Combating corrosion 14 in India
Meet the Waterfront Brigade
19
Cathodic disbondment: 25 the true story
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Quarterly edition Winter 2016
2014 Unbreakable Self-Adhering Coating Solutions
Rockhard Mechanical Protection Shield
DITION
E GO PURE
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GREAT EVENTS Fleming Corrosion Management, November 28, 2016, Al-Khobar, SAUDI ARABIA
Ocean life demands go pure
Hamburg Maritime, January 25, 2017, esse DNV Congress, Tagung, GERMANY NACE Northern Area Western idem Conference February 13-16, 2017,
are convinced by our vision and can see our growth and expansion into other market areas. What’s more, through our global dedicated market management for offshore, we can also take a leading position in the field of pre-insulated pipe plant coating and plant coating in general.
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Edmonton, CANADA
MEOS 2017, together with JV Partner Alsuwaiket Oil&Gas, March 6-9, 2017, Manama, BAHRAIN KCI, Ageing Assets Summit, March 22, 2017, Dusseldorf, GERMANY
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As Seal For Life, we are the ‘lifeguards’ of (often) vulnerable systems, not just on land but also offshore. An increasing number of clients no longer accept short-term solutions, but instead
Changes on our planet also offer new opportunities to put the innovative strength of Seal For Life into practice. For instance, pipeline and ‘bedding solutions’ in unstable infrastuctures, our solutions for applications in polar regions and the solutions that we as a group can offer in relation to the rise in water levels, worldwide.
In short, ‘Dare to Care’ is no longer limited to below-ground pipeline and traditional markets, but means ‘Total Care’ for Seal For Life nowadays. Seal For Life’s playing field has become not only very broad, but also specialised. This demands a lifelong learning process – continuing education – from engineers and application teams, but also from ourselves. Read more on page 4
Blockr Marine: No more leaks! 13
Experience Seal For Life in 3D! 13
Kelvin: Beyond engineering! 30
Frits Doddema, Global General Manager & Executive Vice President
PECOM, March 28-30, 2017, Tabasco, esse MEXICO idem AGEING ASSETS SUMMIT, SPRING 2017(final dates to be announced), MartiniPlaza, Congress Bureau, Groningen, THE NETHERLANDS
This is no longer just something for the future; our Stopaq member is already carrying out applications involved with raising dyke walls in relation to these changing circumstances in the Netherlands. If there were no levees, 45% of this particular country would disappear under water.
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Summer 2016
Total care and our markets and
Seal For Life Industries is a wholly-owned subsidiary of the Berry Plastics Corporation and features a number of industry leading brands in the corrosion protection sector. Headquartered
in
Stadska-
naal, the Netherlands, SFL Industries operates worldwide through a number of manufacturing facilities and sales offices. This enables SFL to be close to its partners and customers offering the highest levels of technical expertise and field support.
Innovation and Cooperation As an owner of industry leading corrosion prevention brands, SFL Industries offers a wealth of expertise and experience to offer clients the best possible solution for their corrosion protection needs. SFL’s technologies and products are approved, specified and deployed by many of the largest players in our markets worldwide. External evaluations and test reports have confirmed that the characteristics of the properties and features of our corrosion prevention technologies conform to Industry standards (ISO 21809-3 and ISO 15590-1). SFL Industries is constantly pushing the
boundaries of its existing technologies to innovate new solutions. We actively seek partnerships to share experiences and develop new products, systems and applications. Never still, always probing, innovation lies at the heart of our business and our values. One World, One Mission Sustainability lies at the center of our world view because long-term viability and success can only be founded on the sustainable production and offering of safe, energy-efficient and environmentally-friendly sealing and anti-corrosion solutions. Among, other things, this means immediate and perma-
FAST marine
splash-zone & underwater installation
Services building & construction
cathodic protection
turn-key applications
home do-it-yourself
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
aerospace
mobile pipeline coating
onshore oil & gas pipelines
offshore
district heating & cooling
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
casing filler
power
flooring
refinery
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
SFL INDUSTRIES
telecom
pulp & paper plants
transportation
infra
subsea
unbreakable selfadhering coating solutions
water pipelines
nent adhesion without costly, polluting, or dangerous surface preparation. Safe and easy-to-apply applications are inherent in our products, reflecting our belief that safety should be intrinsic to all that we do. Markets Seal For Life Industries is a leading market player and partner across numerous market sectors and industries. This reach enables us to tackle an endless variety of fascinating and complex challenges in the field of corrosion prevention and sealing. From oil platforms to domestic bathrooms Our solutions and products matter. We are integral to the oil and gas industry as we help transport the world’s energy commodities safely over land and sea. Our applications minimize risks and thereby improve safety in urban areas and pristine rural areas. We are active of contemporary infrastructural challenges such as dike embankments and new requirements with regard to offshore or sub-sea operations. We are present in the marine industry. We have solutions in the field of traditional anti-fouling. And there are endless opportunities for applications of our products in and around the home. It is this breadth of coverage, the synergies between our products, and the combination of our technologies, that makes us a reliable, inspiring and expert partner with a realistic view of people, planet and profit.
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d the professionals behind it all Dinko Cudic SFL Americas
drs. JF (Frits) Doddema GLOBAL MD & GM SEAL FOR LIFE INDUSTRIES
K.B. Singh Specifications Engineering Head
Leticia Pelayo Customer Service
Jeroen Kuipers Global Proposal Management & Offshore/ Splashzone Business Development
Bob Buchanan SFL North America
Katrien Masschelein Technology HSS
Marcia Navarro R&D Covalence
Sam Thomas Polyken Pro and Engineering SFL Solutions
Inge Robyns Customer Service
Cindy Patton SFL USA
Sander Hofstee Tech Service Managers and Turnkey projects leader
The Seal For Life Performance team worldwide knows despite the distances no barriers or boundaries. All members speak the same ‘language of professionalism’. The Seal For Life team is driven by passion, ideas, suggestions and improvements come from every side of the organization. There are no ‘old school’ hierarchical hindrances; all members preach and practize: Seal For Life is not just a slogan.
Gurinder Sethi SFL India, Bangladesh, Sri Lanka
Stefan Krieken Innovations & manufacturing
Nathan Knight Global Business Director
Emiel Lubbers SFL Middle East/North Africa/Sudan/Iran/ Pakistan Leader
Frank Muffels SFL SEA
Ahmed Moinuddin Market Support Pakistan
Neil Gill SFL Global Director
Kresimir Kekez Cathodic Protection Engineer
Phil Low STOPAQ North Sea, Tank&Terminals Global Support
Chris Banton SEALTAQ Pro
Frederique Bontje Public Relations
Osvaldo D’Albuquerque SFL South Americas
Jack Burns Plant Coating Pro
Venessa Huxtable STOPAQ Southern Africa
Cor Prins Liquid Coatings Systems Pro PIB - Technology Pro
Elmar Chavet Sales Europe
Riyad Alhasan SFL Middle East/ North Africa
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Summer 2016
Polymer Purity ensures no st
Research at STOPAQ’s R&D centre continuously leads to new products and applications.
WATER VAPOR BARRIER
NO SKIN IRRITATION
Properties of polyisobutene BASF Oppanol is made of pure isobutene homopolymer and therefore has a set of unique properties that are seldom found with other types of polymeric substances used in coatings. The molecular chain contains singular bonded carbon and hydrogen only, and therefore it has non-polar characteristics. This leads to chemical inertness, resistance to oxidative attack, and resistance to cross-linkage of the polymer chain that otherwise could cause detrimental effects to the coating. Polyisobutene is a non-crystalline non-crosslinked polyolefin and above its glass transition temperature Polyisobutene is a resinous liquid with high viscosity, cold-flow and tackiness.
FLEXIBILITY AT LOW TEMPERATURES
GOOD ADHESION TO A WIDE VARIETY OF SURFACES
ELECTRICAL INSULATION
Property
Oppanol B10
Oppanol B12
Oppanol B15
Average molecular weight Mn (GPC)
36 000
51 000
75 000
Glass transition temperature
Approx. -65°C
Volume resistivity
1016 Ω.cm
Breakdown voltage
> 30 kV /mm
Water vapour permeability
2.5.10-7 g/m.h.mbar
Viscosity (at same temp.)
Increases with increasing molecular weight
Bond to substrate (at same temp.)
Time increases with increasing molecular weight
Tack (at same temp.)
Reduces with increasing molecular weight
Cold flow (at same temp.)
Reduces with increasing molecular weight
Properties of STOPAQ coating systems All types of STOPAQ Wrappingband are based on a compound that is made of pure isobutene homopolymer (PIB) mixed with mineral fillers and auxiliary chemicals. The choice and mix-ratio ratio of the mineral fillers and auxiliary chemicals result in a compound that has characteristics beneficial for coating applications. For example, Polyisobutene itself is a liquid with high viscosity that has a tend to flow on all types of surfaces. This flow-behaviour however is quite uncontrolled. By adding the mineral fillers and auxiliary chemicals, the flow behaviour gets into control, meaning that it still shows characteristics of a liquid (tack, viscosity, etc.) but it will not run spontaneously from surfaces. Notwithstanding this, some flow-behaviour is still remaining which is proven by the facts that microscopic pores present in steel are completely filled with the compound after application, and that the complete coating constructed of Wrappingband and Outerwrap still show self-healing. STOPAQ Wrappingband is a PIB compound of fixed thickness that is provided with a thin polymeric backing and an reinforcement netting incorporated in the compound. The 3 types of STOPAQ Wrappingband were designed in such a way that most of the properties that depend on the type of PIB used, are similar at different targeted service temperatures.
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Summer 2016
tress, cracks & disbondment Properties of Wrappingband
CZ
CZH
CZHT
Mutual comparison of properties having values with same order of magnitude at different temperatures Bond strength ~ 0.2 N/mm *) Cohesive separation mode and Coverage > 95% *) − Steel St 2, St 3, Sa 2½. All Rz ~ 50 μm − Plant coatings PE, PP, FBE
0°C
+23°C
+50°C
Lap shear strength ~ 0.02 N/mm² *) Cohesive separation mode and Coverage > 95% *) − Steel St 2, St 3, Sa 2½. All Rz ~50 μm
0°C
+23°C
+50°C
Complete adhesion in 10 minutes *) Cohesive separation mode and coverage > 95%
0°C
+23°C
+50°C
+100°C
+130°C
+145°C
Drip resistance No dripping of compound at temperature
Mutual comparison of properties at same temperature Pliability at +23°C
All have good pliability. Slight difference: CZ > CZH > CZHT
Tack at +23°C Time to complete adhesion at +23°C *) Cohesive separation mode and coverage > 95%
High
Medium
Low
Minutes
Hours
Days
Properties independent from type of Wrappingband Occupational Health, Safety and Environmental hazards
None
Coating specific tools and equipment
Scissors, knife, measuring tape
Accumulation of internal stress due to deformation Coating repair
None. All types are liquids which cannot accumulate stress Patch application, amalgamates with adjacent Wrappingband
Dust residues on substrate
All are tolerant to moderate levels of dust residues. Cleanliness check described by STOPAQ
Salt residues on substrate
All are tolerant to high levels of salt residues
Breakdown voltage
≥ 20 kV / mm
Specific electrical insulation resistance Rs100
1012 Ω.m² Pass
Ageing resistance acc. ISO 20340 Annex A including UV, salt spray and humidity **) Ratio of bond strength (S100/S0) at +23°C after thermal ageing for 100 days at Tmax + 20°C *) Cohesive separation mode and Coverage > 95% *)
100d +70°C > 0.8
100d +90°C > 0.8
100d +95°C > 0.8
Ratio of bond strength (S100/S0) at +23°C after hot water immersion for 100 days at Tmax + 20°C *) Cohesive separation mode and Coverage > 95% *)
100d +70°C > 0.8
100d +90°C > 0.8
100d +95°C > 0.8
Resistance to microbiological breakdown
The types of Wrappingband and their targeted service temperature ranges are as follows: − STOPAQ Wrappingband CZ: Maximum continuous service temperature +50°C − STOPAQ Wrappingband CZH: Maximum continuous service temperature +70°C − STOPAQ Wrappingband CZHT: Maximum continuous service temperature +95°C Complete STOPAQ coating system always consist of 2 layers with deliberately separated functions: − 1st layer: corrosion preventative STOPAQ Wrappingband, directly applied to steel and – where applicable - overlapping adjacent existing coatings. − 2nd layer: choice of flexible Outerwrap-types (tapes, heat shrinkable sleeves) providing protection against mechanical damage, supporting full inflow into surface profile, supporting full coverage of steel, and providing self-healing properties. This design philosophy has resulted in the following characteristics of Wrappingband and complete coating systems:
Good, Wrappingband doesn’t contain substances that can serve as nutrients for microbiological organisms
Properties of Complete Coating based on Wrappingband type
CZ
CZH
CZHT
Mutual comparison of properties having values with same order of magnitude at different temperatures Complete coating: Self-healing in ≤ 4 hours
0°C
+23°C
Properties independent from type of Wrappingband Indentation resistance at +23°C and at Tmax *) After removal of load, self-healing completed in ≤ 4 hours Remaining thickness ≥ 0.6 mm No holidays @ 25 kV Impact resistance at +23°C *) Self-healing in ≤ 4 hours No holidays @ 25 kV Coating disbondment resistance at +23°C and at Tmax
10 N/mm
15 J Disbondment 0 mm No holidays Self-healing in ≤ 24 hours
*) According ISO 21809-3 Amendment 1 (2011) | **) Several types of Outerwrap available that have UV-resistance, e.g.
+50°C
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Summer 2016
Doing more with less
This is our contribution to a sustainable world!
Research continues on exactly what happens when two objects stick toge ther. There is no universally accepted theory and given the variety of adhesives that exist it is likely that more than one process may be at work. It is generally agreed that adhesion occurs at a molecular level
with the primary processes involving Van der Waals forces, iconic bonding, covalent bond ing, and/ or metallic bonding. Because the latter three processes result from chemical bonding, we will focus our discussion on Van der Waals forces.
Van der Waals forces come into play when molecules are polarized -- that is, they have a positive end and a negative end. Because the hydrogen atoms are skewed to one side, one end of the molecule has a weakly positive charge and the other has a weakly negative charge. Since opposites attract, the positive side of one water molecule will be attracted to the negative side of a neighboring one. That’s the Van der Waals force.
works. They attribute at least some of the strength of adhesives to the process of me chanical bonding, also known as mechanical locking. The idea here is that all sur faces, even seeming ly smooth ones, are actually rough at the molecular level, and that an adhesive achieves some of its strength by flowing into the hidden valleys and imperfections of the surfaces to be bonded.
For Van der Waals forces to work, there must be close contact between the two surfaces being joined--a separation of only a few angstroms. (An angstrom is one ten-billionth of a meter.) At that range the Van der Waals and other molecular forces interact strongly and the adhesive and the glued surfaces bond together. To ensure close contact, the adhesive must have the ability to wet the surfaces of the parts properly - it must spread and flow such that it maintains the maximum contact area possible, and it should spread thinly to avoid being subject to cohesive failures.
When the adhesive hardens, the two parts are mechanically llocked together.
According to recent research, Van der Waals forces explain how the lizards known as geckos can stick to so many surfaces in a seemingly impossible manner. Specifically, the tiny hairs on the gecko’s feet (called setae) are split at the microscopic level into “as many as 1,000 branches, whose spatula-shaped tips are only 200 nanometers wide.” As a result, even though the Van der Waals forces acting on an individual tip are small, the adhesion of a billion or so tips adds up to enough force to let the gecko stick to anything. Persuasive as all this sounds, other scientists doubt that Van der Waals forces alone fully explain how adhesion
In mechanical bonding, as with Van der Waals forces, an adhesive needs to be able to spread finely into the microscopic roughness of the surfaces, wet the tiny cracks properly, and allow trapped air to escape. The main difference is that mechanical bonding will work at distances that would render Van der Waals forces useless. There are several other theories of adhesion that ought to be mentioned briefly. The electrostatic theory arose in part from the observation that some adhesives generate static sparks when pulled apart, while other items will cling together when placed next to each other, especially in the case of plastics. The theory proposes that as the joint forms, electrostatic charges develop between the two joined surfaces and between the surfaces and the adhesive, and these electrical forces help hold the joint together. But electrostatic forces are believed to be only a supplemental source of joint strength, not the primary one. References: Petrie, E.M., Handbook of Adhesives and Sealants, 2000 Kunzig, Robert, “Why Does It Stick? - the hypothesis that push-on adhesives use bubbles to create vacuum,” Discover, July 1999.
Case: South Africa – Saldanha LNG Tank Farm near Cape Town
Unbreakable Self-Adhering Coating Solutions
Venessa Huxtable
5 LNG bullet tanks of 70 meters in length with a diameter of 7.5 meters www.youtube.com/watch?v=xCWhF4VUxC8
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Summer 2016
Cathodic protection and interaction with coatings The rehabilitation of oil and gas pipelines is in many cases forced upon operators by the detection of coating defects by internal measuring techniques such as intelligent pigs , or by above-ground non-intrusive techniques such as direct current voltage gradient surveys (DCVG), alternating current voltage surveys (ACVG) and close-interval potential surveys. Visual inspections combined with coating evaluation, wall thickness and pit depth measurements at selected bellholes can also be carried out. Analysis of the results from any of these, or a combination of these, surveys can be used to establish suitable remedial measures to extend the pipeline operational lifecycle by coating application and/or cathodic protection system remediation.
PDO Oman, pipeline rehabilitation and inspection
Specialised surveys shall only be conducted by personnel who have received training in the survey techniques and have a certificate of competence. Some above ground surveys are highly dependent on operator performance and data interpretation (e.g. DCVG). To ensure that the bellhole excavations for the visual inspections are carried out at meaningful locations a Priority Matrix should be developed for the entire pipeline section in question to establish high and low risk areas for corrosion. From the Priority Matrix it is possible to select locations for excavations and visual examination. A control location should also be selected. In this context a control location is one where the Priority Matrix indicates a low priority for excavation. The purpose of the control location is to validate the matrix, because if active corrosion is identified at the control location then the matrix needs to be revised. For example, on a pipeline in service, external corrosion over large areas has been detected and the cathodic protection cannot maintain the required potentials along the pipeline due to a combination of coating degradation and current distribution. In this situation, the pipeline operator may consider to refurbish or rehabilitate the pipeline (or the suspect pipeline sections). Even after the rehabilitation project has been completed, it is possible that there will still be significant amounts of pipe in the ground with the original coating. Therefore, there is a need to understand the coating failure mechanisms to work out if these mechanisms can be managed to extend the life of the pipeline. Post rehabilitation Check The electrical characteristics can change after the pipeline has been rehabilitated and due
care shall be taken to ensure that these do not have an adverse effect of the safety of persons and the cathodic protection systems. Personnel safety Acceptable step and touch potential values are not universally agreed. A detailed explanation is not provided in this standard, and the relevant electrical safety standards should be consulted. Step potential is the voltage between the feet of a person (or animal) standing near an energised pipeline. The magnitude of the voltage is directly related to the proximity to power lines (buried or aerial), the soil resistivity, and the pipeline coating conductance. If we assume that only the coating conductance has changed due to the rehabilitation then it is possible that the soil voltage gradients can change and the step potential exceed acceptable limits. Touch potential is the voltage between the energized pipeline and the feet of a person in contact with the object. Typical objects include valve stems and valve fences. If all other factors remain unchanged, the rehabilitated coating can increase the a.c. voltage on the pipeline (since the high quality coating does not permit voltage discharge through the coating to the soil) and hence the touch voltage. Remedial measures are provided in the relevant standards but can include such things as: • Additional pipeline earthing via an a.c. discharge device • Gradient mats in the soil to reduce the gradients • Non-metallic or insulated controls on valves Cathodic protection Limit Once the pipeline coating has been rehabilitated it is possible that the current demand from the cathodic protection system can be significantly reduced. It is necessary, therefore, to adjust the cathodic protection system
to ensure that there are no risks of exceeding the limit potential (i.e. the most negative potential acceptable – typically -1.2 volts (IR free)). The distribution of the current will be significantly better and areas that were previously not cathodically protected could now be protected. A comprehensive cathodic protection survey shall be carried out after the rehabilitation is complete and the cathodic protection adjusted to suit the new coating conditions. The use of coupons to verify the protection levels in the areas of rehabilitated coating should be considered. The Cathodic Protection system shall be checked to fulfill all requirements stated in: - I SO 15589-1:2015 Petroleum, petrochemical and natural gas industries -- Cathodic protection of pipeline systems -- Part 1: Onland pipelines. -E N-ISO 15589-2:2014 Petroleum, petrochemical and natural gas industries. Cathodic protection of pipeline transportation systems. Offshore pipelines.
The use of adequate test methods and correct interpretation of the results from testing is paramount for obtaining an impression about long term performance and failure mechanisms.
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Summer 2016
cases
FAST: Field Applied STOPAQ Technology with PE/PP extrusion for mechanical protection The oil, gas & water industry requires advanced corrosion prevention and insulation systems. Corrosion processes can severe and pipe rupture may occur. Hard and tough coatings may break, and even CP systems can cause uncontrolled situations depending on coating choices of the mainline and joints. The industry is looking for low cost cycle so-called sustainable solutions. Solutions to last whereever the project takes. No looking back after installation, but also no worries during transport and installations. Systems which are applicator and environmentally friendly. A system which overcomes the coating problems of today such as disbondment, stress corrosion cracking, delamination, etc. The market today is asking for safe, easy and
quick solutions from a holistic projectview. Pipeline logistics is main cost driver of every pipeline construction project. The result of combining STOPAQ’s technology with existing solutions such as GRE, Polyester, Extruded PP, PE, or liquid Polyureas, we can offer a longterm cost-effective solution delivering longterm protection against corrosion drivers such as ac/dc current, stray current, MIC, abrasion, movements, disbondment. We see stopping corrosion as our mission. Factory Applied STOPAQ Technology offers you more control in all process steps from design, fabrication, transport, construction and operation beyond the design life.
Full Service Automated Coating Application Equipment. Factory & Field application. SynegyQ is a new single wrap pipeline coating system that exists of a polyethylene backing and an extremely high shear resistant corrosion prevention material. The system does not require any primer and can be
Services
Turn-key Applications & Equipment
Clamp Repair Application 32” Subsea Pipe, Indonesia Location:
Indonesia
Water Depth:
27m
Date:
2015
• Pre-engineering survey • Innovative engineering • Hyperbaric testing facility • Design & fabrication of hyperbaric welding habitat DCN Supply:
• Saturation diving welders
• Saturation diving system • NDT Inspection • Project management Details of Work:
Repair a crack in a 32” live gas pipeline on seabed without
interrupting gas flow. Work was off Normand Baltic
applied with little tension. It will not get brittle, tear or break at low temperatures; it simply seals for life. It is the ultimate non-shielding tape system with an extreme moisture uptake resistance in the market today.
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Summer 2016
ODAY! T E L B A IL AVA
> >
guaranteed
30 yrs.
POL GURU
®
science over convention
WE150169_ADV_POLYGURU_WORLD_PIPELINES_DEF_CONTOUREN.indd 1
15-04-15 10:49
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Summer 2016
High Temperature Anti Coatings and its Life T
ABSTRACT Heat Shrink Sleeve (HSS) coatings technology is based on radiation cross-linking of Polyethylene and Polypropylene sheets in combination with multiple types of adhesive Chemistries. Heat Shrink sleeves have been and continue to be used for the corrosion protection of oil, gas, water and District heating pipelines. Heat Shrink sleeves have proven track record and performance as a corrosion coating for field joint coatings; pipeline specials; and used as sealing systems in district cooling and heating application. This paper addresses the laboratory studies of the long term thermal, oxidative and hydrolytic stability of radiation cross-linked polyolefin as used in Heat Shrink Sleeves. Studies are presented on the results of long term heat aging and predicted life expectancy based upon Arrhenius plots. Analytical such as oxidation induction time, dynamical mechanical analysis, peel adhesion and physical testing are discussed as test methods to validate and predict long term stability and projected life expectancy for in-service on operating pipelines.
Marcia Navarro Professional R&D Covalence Director
High performance pipeline corrosion protection and insulative coatings have been developed to meet the demanding requirements of pipelines operating over a wide range of field conditions. Today there are, a variety of pipe coating technologies commercially available and selection has evolved along geographical lines. Important factors determining the coating selection relies on the pipeline construction, Right-of-Way (ROW) conditions, pipe transportation and handling, and operating conditions. As an example, coating damage is a real concern in regions where limited transportation infrastructure, rough pipe handling, aggressive backfills and high populations are prevalent. This creates the need for robust, multi-layer coating systems. The steel pipeline are generally coated with polymeric materials such a 3-layer PE and, 3-layer PP Line Coating systems (consisting of an epoxy layer as corrosion barrier, tie layer as an adhesive layer and an outer mechanical layer defined as Top Coat), polyurethane, single layer Fusion Bonded Epoxy, dual layer Fusion Bonded Epoxy and multilayer insulated systems etc. All these coatings are plant applied in stationary or portable factories. The coating at the end of each pipe length is cut back over a
length of 150 mm Âą 20 mm1. These pipes are then welded together in the field at the ROW leaving a portion of bare steel exposed. The bare steel needs protection from corrosion. There are several field joint coating solutions for example, injected or sprayed coatings and Polyurethanes, cold applied PE tapes, welded PP or predominantly used HSS. HSS have been commercially available since pipeline coatings applied in manufacturing plants became commonplace in the early 1960s. These HSS coating systems primarily consist of a cross-linked and stretched polyolefin backings. XPE and XPP backing sheets are then coated with different adhesive chemistries, i.e. butyl-based adhesive and hot melts, resulting in the 2-layer system. When a liquid epoxy coating is combined with a 2-layer system, the product is then referred to as a 3-layer HS field joint coating. In the latter case the liquid epoxy acts as a primary anticorrosion layer. In addition, under circumstances of high stress and directional drilling operations (HDD), a typical reinforced heat shrinkable product in a three layer version (configuration) is utilized, to meet the demanding field application conditions. The heat shrinkable sleeves installation
11
Summer 2016
icorrosion Time Predictions NEW
f the Covelence o g n ti a e h g n ri Du uired force, q re s it to g in k shrinkable bac ill disappear! w r to a ic d In t a the More He
starts by treating the welded steel pipe surface with grit blast to a near white metal (Sa2½) with an anchor pattern close to 70 to 80 µ; other surface treatments involves power wire brushing. The next step is to preheat the pipe surface to the indicated temperature according to the selection of heat shrinkable sleeve, but protecting the line coating to avoid its disbondment or mechanical damage; the sleeve is wrapped around the welded pipe joint, secured with a closure patch and shrunk by mean or propane-butane torch or an automatic shrinking machine. An important property of a HSS that are designed for high temperature pipeline application is its ability to retain the properties at the maximum operation temperature preferably for the lifetime of the pipeline coating. One of the most common failures observed with high temperature coatings is cracking and flaking from the pipe as a result of embrittlement of the coating. Mostly, embrittlement is a result of the aging or thermo-oxidative degradation or coating loss of adhesion caused by its degradation in due to moisture exposure. Both the backing and the adhesive of the sleeve are stabilized with proper antioxidants in order to inhibit their thermo-oxida-
tive aging. The stabilization of the backing is more crucial since the backing is exposed to oxygen more so than the adhesive. In order to test the effectiveness of stabilizers, oven aging tests are carried out and the changes in mechanical properties are measured to follow the course of degradation. This type of testing has been found useful for comparing thermal stability of different coatings. Additionally, accelerated tests are carried out at temperatures much higher than the operating temperature, the data is plotted as time to failure versus temperature and extrapolations are made to the operation temperature in order to predict the lifetime of coating. Such a study was previously conducted by Raychem and a lifetime of over 30 years at 120°C was predicted for XPE backing. Indeed, this theory is supported by the fact that no failures to date were reported from the sleeves installed on oil pipelines operating at 110°C over 20 years. Other coating failures involve loss of adhesion over time in presence of wet environments. When designing a heat shrinkable coating a hot water immersion test, in addition to all other coating requirements as stipulated on the field joint coating specifications2, becomes a critical test to assess the life time of coating. The adhesion of the coating
as well as its viscoelastic properties shall not change drastically from the original values. Therefore adhesion testing of the coating after its exposure to water for long term at high temperatures remains of interest. International standards3 applicable to field joint coatings for buried or submerged pipelines have upgrade the requirements for hot water immersion test on the 2 and 3 layer heat shrinkable sleeves, to maintain a retention of the peel adhesion of the coating to both the pipe surface and line coating to be at least 75% of the original values after the exposure period at the maximum operating temperature limited to a 95°C. This of course is a severe test but it is an important way to predict the life time performance for the high temperature anticorrosion coating. This paper reviews HSS requirements as High Temperature Anti Corrosion Coatings, results are presented for two type of HSS, a two layer polyethylene coating rated for 65̊C and a 3 layer polypropylene coating rated for 90°C as maximum continues service temperatures. Several laboratory studies of the long term thermal, oxidative and hydrolytic stability are presented. Tensile and elongation at break testing were carried out for various XPP backing sleeves, in addition a polypropylene line coating (PP top coat) was considered as part of the study. The heat shrinkable backing and polypropylene top coat samples were thermally aged at various temperatures in order to build the Arrhenius plots and therefore to predict the cross-linked backings life time performance. DMA was conducted for all the examples exposed at different time intervals and temperatures; changes in the cross linked density by means of determining the tan delta parameter were recorded. Furthermore OIT was evaluated on several thermally aged samples. The aim of the OIT study was to understand if the samples that showed a lower lifetime at a certain service temperature had a reduced antioxidant concentration, indicated by a shorter time in which a sample has achieved its oxidation. The two layer (PE based HSS) and three layer (PP based HSS) coatings described above, were tested for hot water immersion exposed at various time intervals; 28, 50, 70 and 100 days for the case of the 2 layer (PE based HSS); and, 0, 70 and 100 days for the three layer (PP based HSS) coatings. The testing temperature set at the respective coating maximum design temperatures. Peel adhesion test to pipe surface were determined at end of the exposure period and its adhesion value compared to those of the pipes which were not exposed. The % adhesion retention was calculated for both systems, the results exceeded 75% of the original adhesion values. Dynamical analysis of the exposed samples were conducted; modulus and tan delta values were recorded in order to assess that no significant material changes for the adhesives viscoelastic properties were observed after the exposure. This would in turn confirm the integrity of the heat shrinkable coating for a continuous exposure at maximum design temperature.
CONCLUSIONS The Arrhenius plot is an appropriate test method to define a material lifetime if the activation energy within the testing temperatures remains as constant as possible. In general in thermo oxidative environments the chemical reactions underlying the degradation for the polypropylene-elastomer blends involve oxygen dissolved in the material. Accelerating these reactions by using elevated temperatures (e.g. in air circulating ovens) can bring complications caused by diffusion limited oxidation. Diffusion-limited oxidation occurs when the rate of oxygen consumption within the material is greater than the rate at which it can be resupplied by diffusion from the surrounding air. This could result in heterogeneously oxidized material thus altering the tensile properties. Future work will consider thermally aging the materials under a controlled oxygen environment, in addition to cross-linked polyolefin several sources of 3LPP line coatings will be studied. By designing a heat shrinkable PP backing with higher cross-link density and selecting the appropriate antioxidant package an extended life time can be anticipated. This has been confirmed in XPP composition A vs. XPP composition B. As expected, cross-linking provides a great tool to extend the lifetime of a polymer, of course if the polymer is a good candidate for cross-linking. An appropriate heat shrinkable coating shall not only comply with specific international standards, i.e. ISO 2180932, where specific requirements are set such as lap shear, impact, indentation resistance, cathodic disbondment, peel adhesion, installed sleeve thermal aging etc. Furthermore a high temperature coating shall be tested to retain its adhesion over time in presence of wet environments. Acceptable adhesion levels after water exposure should not change more than 25% from the original values. Future work in planned to conduct Arrhenius studies on the installed HSS coatings and monitor the changes in cathodic disbondment and HWI after accelerated thermal aging conditions. REFERENCES 1.”External polyethylene and polypropylene coating for line pipe”, DEP 31.40.30.31-Gen. December 1994 2. Petroleum and Natural Gas Industries. External coating for buried or submerged pipelines used in pipeline transportation systems Part 3. Field joint coating for ISO 21809-3 Standard: 2008-08-153. Petroleum and Natural Gas Industries. External coating for buried or submerged pipelines used in pipeline transportation systems Part 3. Field joint coating draft for ISO/FDIS 218093 Standard: 2015-07-24
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superior sealing solutions
District Heating & Cooling Seal For Life Industries is a total solution provider for joint and sealing techniques in district heating/cooling. The product range includes: joint casings & sealing heat-shrink sleeves (wrap-around and tubular), foaming hole closures, primary joint foam seal, end caps and sealants. Additional equipment like torches, scrapers, heat shields, etc. are part of the Seal For Life District Heating & Cooling product assortment. In addition, Seal For Life has also designed products based on innovative radiation chemistry and polymer technology for transmission pipelines and gas and water utilities. Millions of pre-insulated pipe joints have been sealed with Seal For Life products.
District Heating from plant to households
Elmar Chavet Sales Europe Dare to care The world is changing and we have to change with it. What does that mean? We have to stop feeling comfortable and search for solutions beyond the comfort zone. In today’s world of durability and a conscious use of fossil resources and future solutions, we at Seal For Life Industries, see many possibilities. District heating/cooling is one of these possiblities. A way of bringing comfort in our homes, but also our offices, in a more sensible and less wasteful manner. By conserving and and re-using energy, which is less incriminating for the environment. With responsible sealing solutions that will last for future generations. Because we care we have put the facts and figures in this booklet. A smart system District heating is a system for distributing heat generated in a centralized location for residential and commercial heating require-
ments, such as space heating and water heating. In many processes, for example when electricity is generated or waste is burned, large parts of the energy are set free in the form of surplus heat. The fundamental idea behind modern district heating is to recycle this surplus heat which otherwise would be wasted – from electricity production, from fuel- and biofuel-refining, and from different industrial processes. The recycled heat is used to heat water which is transported to the customer via a well-insulated network of pipes. Sustainable resource Many different energy sources are used for district heating production, including waste, biofuel, heat pumps, landfill gas, natural gas, propane/butane, electricity and fuel oil. Several different energy sources may be used simultaneously in the district heating plant, which makes for stable and flexible supply of heat to customers.
Reliable installation No matter what level of performance a joint sealing system displays, if it cannot be installed correctly and consistently, it will most certainly fail. Installing Covalence heat shrink sleeve/Dualseal systems. is really very simple but it is still vital to ensure that every part of the sleeve receives a minimum amount of heat. We now incorporate a unique solution to this challenge by supplying our sleeves with dimpled backing. These dimples vanish permanently on receiving the correct amount of heat thus providing a visual guide to the installer, and, most importantly, post installation proof to the coating inspector. The outer backing layer is made from irradiated crosslinked high-density polyethylene (HDPE). It is expanded during the production phase. Heating manually via torch or automatically via SFL patented Kelvin technology causes the sleeve to recover and generate a permanent hoop stress around the pipe.
District heating based on renewable energy sources has a positive environmental effect.
A comprehensive product range answers every application need in a district heating and cooling network.
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Seal For Life joint & technology overview
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Summer 2016
No more leaks! BLOCKR MARINE is the ideal solution for many applications on yachts, sloops and cruisers All of Blockr Marine’s marine products are derived from patents which have been tested for years under the most extreme conditions at sea and in the intensive offshore industry. Based on the proven waterproofing and anti-corrosion properties of these revolutionary patents, we have developed applications for yachts, sloops, cruisers and in fact every kind of floating vessel that needs to keep afloat. Blockr Marine’s products are non-toxic and, due to their anti-ageing properties, are also non-polluting for lakes, seas and oceans. Now available online:
blockrmarine.com
Now available online: the Pro-Patch! The Pro-Patch is a product with a unique and patented composition: it never dries out,
Non-woven side
Adhes
ive sid
e
thereby retaining its absolute waterproofing and anti-corrosion properties. The material from which the patch is made remains flexible, does not age, and is therefore the ideal gasket with which to seal all sorts of drill holes, feedthroughs, deck and hull fixings. Thanks to its optimal malleability, Blockr Marine’s Pro-Patch is also suitable for sealing persistent leaks around windows and hatches. The Pro-Patch is very economical in use; you use only what you need, so tubes with dried-out sealant or other substances are a thing of the past.
Guinness Book Record holder Marco Bonissimo: special guest at Adipec Abu Dhabi During the last Adipec, held in Abu Dhabi, SealforLife presented a new member. It was the official Dutch world Champion and ball-artist Marco Bonissimo. He surprised many Adipec visitors with his amazing performances with many balls at the time. He was the living statement that it is an art to protect piplines for a lifetime in the sutainable way. And last but not least; he made a lot of visitors laugh and provides the necessary relaxation between business meetings
Coming Soon
Blockr
midsun
self fusing
CLEATS
STANCHIONS
FEEDTROUGHS
WINCH
INVITATION 3D ARMCHAIR THEATRE
The Seal For Life Industries Experience Center is located in Stadskanaal, a relatively small community in the north of the Netherlands. The Center welcomes many visitors, including business partners, students, and governmental authorities who are provided with a thorough overview of what happens around pipes above and below ground, as well as above and under water. An interactive history describes obsolete methods, tested methods and innovative solutions to corrosion and sealing issues.
Experience the virtual tour:
sealforlife.com/virtual-tour
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Combating corrosio K.B. Singh Specifications Engineering Head
Seal For Life Industries been present in India for the last 30 years and has built a reputation of reliable partner for sup-plying, upgrading and developing new products / solutions for combating soil side corrosion on critical segments of buried on-shore, offhore pipelines, above ground storage tanks, LPG mounded bullets, buried vessels and plant piping in petroche-mical plant and re ries. Seal For Life Industries products have been used on many projects in India which are unique and one its kind in the world. India Energy Overview: India has a geographical area of 3.29 million square kilometers and has a population of 1200 million. To meet the energy demand of this huge population, a large network of natural gas, crude, product, LPG pipelines have been laid in the last 35 years. The share of natural gas in the country’s primary energy mix is approximately 8 to10%. This share is quite low as compared to the global average of 24%, primarily due to the supply-side constraints. India’s consumption of natural gas was around 50 billion cubic meter in 2013, which accounts for approximately only 2% of the world natural gas market. However to maintain future growth, Government of India has identified - Natural Gas as one the major fuel in the energy basket and hence the natural gas pipeline network is set to expand tremendously in the coming years. Further, Government of India to control pollution level in the country has embarked on an ambitious plan of operating public transport on CNG (compressed natural gas) and bringing to highly populated cities piped natural gas for domestic sector cooking and heating / cooling applications and hence coming years are also going to witness an explosive growth of pipe steel / plastic network in cities.
Covalence Field Joint Coating Systems: The long journey of Seal For Life Industries in India started in 1980’s when India embarked on building a gas pipeline grid for transmission of gas coming from Off-shore Bombay High. Construction of 1750 Km long 18”~36” diameter HBJ pipeline by a Consortium of International and Indian contractors led by Spie-Capag, France, Toyo Engineering and Nippon Kokko Japan commenced in 1986 and was commissioned in 1990. This pipeline starts from Hazira in Gujarat to Bijapur in Madhya Pardesh. and Jagdishpur in Uttar Pardesh. It carries 18 million cubic metres of gas everyday to three power houses at Kawas (Gujarat), Anta (Rajasthan) and Auraiya (Uttar Pardesh.) and to six fertilizer plants at Bijapur, Sawai Madhopur,Jagdishpur, Shahjahanpur, Aonla and Babrala. Each of the fertilizer plants produces 1,350 tonnes of ammonia per day. The construction of this pipeline was a unique engineering feat and was completed at an estimated cost of over 560 million US$. The pipeline passes through 343.7 km long rocky area, 56.3 km long forest area, besides crossing 29 railway crossings and 75 big and small rivers. The HBJ pipeline is three layer polyethylene coated and all the girth field joints are coated
with Covalence WPC80 for normal buried joints and DIRAX for HDD joints. More than 160,000 girth weld joints were coated during the construction period between 1986 and 1989. The pipeline has been operational for about 24 years and various intelligent pigging, cathodic protection, bell hole and stress corrosion cracking surveys have confirmed that pipeline is in good health and is expected to be in service for the next 35 years without any major rehabilitation of the pipeline or the external coating. The excellent on-construction and performance of Covalence heat shrink sleeves and the technical field services provided during
construction for ensuring correct installation laid a strong foundation for Seal For Life Industries- India. After the successful commissioning of the HBJ pipeline, the next big onshore pipeline project was the 22”~16”/10.75” 1443 Kms long Kandla Bhatinda product pipeline of Indian Oil Corporation Ltd. The pipeline was designed by Bechtel, USA and constructed by Consortium of International and Indian Contractors lead by Skodaexport of Czechoslovakia. The pipeline construction started in 1993 and was commissioned in 1996 at a cost of 370 million US$. All the girth weld
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on in India coating by trained applicators of the Pipeline contractors. More than 150,000 liters of Powercrete R-150 was supplied for this prestigious project.
field joints – approximately 130,000 numbers were protected by Covalence three layer heat shrinkable field joint coating system – HTLP60. After HBJ and Kandla Bhatinda, many pipelines projects have been executed in the last twenty years which has increased the transmission pipeline network by more than 20,000 Kms of pipe diameter ranging from 10.75’ to 48” and practically on every pipeline project, Covalance HTLP field joint coating systems have been used. In the last 20 years, more than two million field joint systems have been installed and many pipe verification digs have proven the field performance of the joint coating system in protecting the critical pipeline infrastructure
flexible, cable-like anode, which is placed in continious close proximity to the structure. Key to the anode’s performance is the central, conductive polymer coated copper conductor packed with high perfermonce coke breeze and contained in the acid resistant fabric. Powercrete: Powercrete range of 100% solids high build liquid epoxy coatings are being used on many projects in India for protecting the buried infrastructure at elevated temperatures and complex structures like valves, fittings, etc. Two notable projects where Powercrete R-150 have been used for protecting critical components are Cairn India Ltd – 24” diameter x 670 km skin effect heated insulated
“Powercrete for HDD is often copied, never equalled” of various Oil and Gas Companies of India – Indian Oil Ltd, Gail India Ltd, Reliance Ltd, Hindustan Petroleum Corporation Ltd, Bharat Petroleum Corporation Ltd, Oil India Ltd, ONGC Ltd, Carin India Ltd etc.
Some of the significant projects in India including the longest LPG pipeline in the World – GAIL Jamnagar Loni pipeline – 16”/14”/12.75”1270 kms long where Covalence HTLP joint coating systems have been used are: Anodeflex: Long line polymeric anodes – Anodeflex 1500 were introduced in India in 1994 for protecting tank bottom plates for crude oil storage tanks from soil side corrosion. Prior to introduction of Anodeflex-1500, Indian Oil Corporation Ltd, one of India’s largest refining company and operating large crude oil and product storage tanks of diameters ranging from 30 meters to 80 meters were not cathodically protecting the tank bottoms and during various tank inspections, corrosion under the tank plates were detected. Indian Oil Corporation Ltd, after a rigorous analysis of various configurations of anode systems- deep ground beds, discrete single angle drilled anodes, long line anodes installed under the tank bottoms selected the configuration of long line anodes under the tank bottom to ensure uniform current distribution and polarization of the tank bottom between (-)0.85V t (-)1.2V “OFF” with respect to Cu/CuSo4 reference electrodes. The long line anodes selected was Anodeflex-1500. The Anodeflex 1500 is a long line
pipeline carrying high viscosity crude from Barmer, Rajasthan to Jamnagar, Gujarat. This pipeline is the longest continuous heated pipeline in the world and the first such pipeline in India and the Reliance East West – 48”x1400 Kms natural gas pipeline from Kakinada, Andhra Pradesh to Bharuch, Gujarat. Reliance Industries Ltd started construction of one of India’s largest natural gas pipeline -48”x1375 kms long from east coast – Kakinda, Andhra Pradesh to Baruch, Gujarat in 2006 and completed the pipeline in a record time of three years in 2008 to carry 80MMSCMD. The Consultant for this large project was Gulf Interstate, Houston USA and the pipeline was constructed by team of International and Indian Pipeline Contractors – Stroytransgaz, Russia, CPP, China, Larsen and Toubro India and Punj Lloyd India. Powecrete R-150 liquid epoxy coating was selected as the field / factory applied anti-corrosion coating for all the station piping of the 11 compressor stations installed along the pipeline. The factory coating was applied by PSL Ltd located in Gujarat and the field
Polyken: Polyken range of coatings have extensively been used in the Oil & Gas Segment for rehabilitation of coal tar coated pipelines in India and coating large diameter water pipelines. The on-shore crude / product oil pipelines laid in India prior to 1980’s were field applied coal tar coatings and the total length of this network is more than 3000 kms of pipe diameters ranging from 10.75” to 28”. Over the years, the coating resistivity reduced to a level where it was not economical to protect the pipelines by adding supplementary cathodic protection systems. The Pipeline Owners initially started the rehabilitation with field applied coal tar followed by manually applied coal tar tapes but known of these technologies were successful in reducing the requirement of cathodic protection current to acceptable levels of current density <100µA/m2 nor the quality of application of the coating was upto the requirement to enhance the residual life of the pipelines > 30 years. After evaluation of various rehabilitation coating technologies and ease of application on the operational pipelines, 3ply / 2 ply cold applied coating technology of Polyken was selected. Till date more than 450 kms of operational pipelines have been re-coated using Polyken’s 3ply / 2ply field applied primer activated coating system.
Conclusion: Seal For Life Industries has been a valuable company to the Oil & Gas sector of India by providing technological solutions and products with high level of technical services for training and application of company products for corrosion protection of buried infrastructure across the entire gamut of off-shore / on-shore pipelines, storage tanks, plant piping etc. Over the last three decades, the Company has supplied products to almost every single Oil & Gas Pipeline Project and has a significant presence in the buried infrastructure of the on-shore upstream and down-stream projects. Seal For Life Industries has evolved over the years and has illustrious past of technologies from previous companies – Raychem & Tyco International. Seal For Life Industries part of Berry Plastics Engineered Material Division, USA has re-engineered itself for providing new green technologies for corrosion protection of the buried infrastructure for design life in excess 50 years. The Company under the leadership of Dr. Fritz Doddema Executive Vice President, Global General Manager and Managing Director is committed to bring new technologies to India and work with the Indian community of Oil & Gas professionals to prevent corrosion of the critical infrastructure of India’s growing Oil & Gas assets.
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STOPAQ THE ONE & ONLY ORI MADE FROM PURE PIB
Unit Density at 20 °C 9·m-3 Coefficient of volumetric expansion at 20 °C K-1 Specific heat KJ·kg-1·K-1 Heat conductivity W·K-1·m-1 Refractive index n20D Dielectric constant εr (50 Hz) DIN 53 483 Dissipation factor tan δ (50Hz) Specific resistance Ω·cm Coefficient of permeability to water g·m-1·h-1·mbar-1
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Today, companies are increasingly investing in assets from a perspective of a total cost of ownership. Companies seeking to de-risk their investments need to understand not just the costs of capital, but also of the costs of maintenance and repair over the assets projected life. STOPAQ is a permanent fluid polymer which due to its purity of its polymer never loses its corrosion prevention properties. It is non-aging, and it protects in year 30 as if it was just applied. So apply today and see you in 2070!
S T O P A Q .
T H E
O R I G I N A L :
P U R E
P O L
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IGINAL Value 0.92
6.3·10-4 2·0 0·19 1·51 2.2 ≤ 5·10-4 1016
2.5·10-7
According to STOPAQ engineers:
ocean life demands
PURITY
WATER VAPOR BARRIER
NO SKIN IRRITATION
NSF
NON-NEWTONIAN SUPERIOR BOND TO ANY SUBSTRATE
FLEXIBILITY AT LOW TEMPERATURES
ELECTRICAL INSULATION
®
NSF/ANSI 61 DRINKING WATER APPROVED
Y I S O B U T E N E - B A S E D
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T E C H N O L O G Y
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Hilton Hotel Johannesburg: Example of SEALTAQ Civil Sealing Systems
Richard Brownlow and Tamsin van Heerden Professionals South Africa
The Seal For Life/STOPAQ professionals in South Africa did a very good job at the johannesburg’ hilton. The roof of the hotel was in a very bad condition, climate influences did their work very wel during the time since the hotel was built. The management had an open eye for innavions and sustainable solutions. After the presentations and demo’s, the team of richard brownlow and tamsin van heerden got the job and the roof was completely renovated and covered with sealtaq. the self-healing, ever lasting solution. On this page we will tell you more about the SEALTAQ Civil Sealing Systems. What makes SEALTAQ unique? • SEALTAQ is a permanent solution for sealing against water ingress • SEALTAQ is selfsealing and bonds to any substrate at a molecular level • Operates between -45 and 65˚C • Does not detoriarate • Is non-toxic • SEALTAQ stops leakages instantly • Deal for cable- and wall penetration till 5 meter waterpressure • Available in different formats to meet your application requirements
Passive House Concept Air tight Solutions areas: • Roofing • Façade/outer wall • Floor • Window and Door frames • Connectors and feed-through areas •C onnection between: wall & floor, ceiling & wall, feed-through pipes and electrical solutions, doorframes and wall, window frames and outer wall.
SEALTAQ is the result of 30 years research and 25 years experience in civil construction. Guaranteed Solution Our unique guarantee program provides a sustainable solution to extend the life of the asset, giving the asset owner peace of mind. Contrary to other sealing products, our guarantee programs cover both materials and application/maintenance including regular inspections. We provide such guarantee programs for the life of 10/15 and even 40 years. Our experience has revealed that too many asset owners are disillusioned by guarantees that hold no water. What makes it simple? • Surface tolerant • Immediate bond to glass, pvc, pe, concrete, epdm, neoprene, gypsum, aluminium, stainless steel, stone, brick • No preheating needed • No hot-applied primers needed • Cold-applied • No shelflife problem • Even bonds to wet substrates • Monolithic • Harmless to applicators
Systems for the Control of Interior Air Movement
Cool Roof Systems Renewable Energy Systems
Vegetated Roofing Systems
Deck Coating and Membranes
Air Barrier Systems
Glazing and Transition Systems
Insulated Exterior Cladding Waterproofing and Drainage Systems
Sealant Systems
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Waterfront Brigade Powered by STOPAQ’s SEALTAQ Civil Construction Solutions DTS, Diving Technology Solutions, is part of the international Waterfront Brigade. It is the premier dutch contracting company for any inshore work. DTS is a STOPAQ fan and engineers and designs new solutions to seal and protect any infrastructure in towns, between towns, harbours. The Waterfront Brigade consists of a team of 1,800 international divers to service you, anywhere in the world.
Protecta-Mesh is another new exclusive brand of SFL
Available 24/7 For specific repair jobs below the water, our team of the Waterfront Brigade is available 24/7. The Dutch Waterfront Brigade is internationally on stand-by. Jobs done by the Waterfront Brigade: • Crack repair of a bridge “tzummarum” for Oosterhof Holman. • Sealing seam of the transitions areas between concrete and steelframe of a quai wall in Drachten, for Kijlstra. • Quaiwall of a canal sealed at Mensingeweer by SEALTAQ.
Why SEALTAQ? SEALTAQ is the most reliable solution as it also meets the expectations of the applicators in terms of quality and safety. The quality is consistent as a result of the state-ofthe-art sealing system configurations and it’s basic core technology.
STEEL REPAIR
1. Push bars into soil and weld onto sheetpiling.
2. Weld concrete reinforcement onto the bars on both side of the sheetpile.
3. Fill the space, without water enclosure, between the concrete reinforcement with SEALTAQ Repair Filler.
4. Around seams and into the holes, smear out the SEALTAQ Repair Filler.
5. Fill out seams and holes with the SEALTAQ Repair Filler.
6. A pply a mechanical shield of polyethylene by a tacking gun onto sheetpiling.
WOOD REPAIR
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External coating rehabilitation Dependence on blasting profile, sa 2,5 cleanliness grades, dust or salt/chloride removal is not always necessary
The selection of a suitable pipeline repair/replacement coating is from a technical point of view the major decision to be made for a rehabilitation project. Rehabilitation seeks to re-establish coating efficacy to its original state. This does not mean that the same coating must be used for rehabilitation; often more state-of-the-art coatings are employed. The problem is that there is a wide variety of coating systems that have been used with varying degrees of success as pipeline coatings. A closer examination of many of these systems reveals very few have been subject to exhaustive testing to ensure the coating is fit for purpose. In order to specify the requirements of a protective coating and ensure correct testing it is useful to understand their major failure mechanisms. Current thinking on the mechanism of failure of thin film liquid applied coating (epoxy) requires different coating parameters to those used for example in evaluating tapes. With thin film coatings, the penetration of water and subsequent osmotic pressures developed will result in many small canals creating further water uptake. Eventually the thin film coating becomes transparent to moisture and becomes a semi-permeable membrane which, under the influence of cathodic protection draws water through the coating to collect at the steel coating interface as a blister which eventually bursts and allows further undermining of the coating. Coating failure is accelerated by increasing temperature. This failure mechanism is not applicable to tape coatings.
A coating used for the rehabilitation of a pipeline must fulfill the following requirements: 1. The most important and fundamental requirement of a coating is that it must separate the pipe from the moist soil. To do this the coating must have a high resistance to permeability / water uptake. 2. The coating must have a good bonding to the steel pipe to prevent moisture ingress and to resist soil stresses. This is very dependent upon surface cleanliness and profile prior to coating application. 3. The coating must be capable of being applied in the ditch under the prevailing environmental conditions. 4. The coating must be capable of being repaired and to withstand holidays over time. 5. The coating or supporting techniques must be available to cover the repair of the overlap areas onto the parent coating. 6. T he coating must be tolerant to alkali generated by cathodic protection The following Program of Work should be followed: 1. D efine the size of the coating problem by coating defect surveys, cathodic protection surveys and metal loss surveys. 2. Analyze survey data to decide priorities and what needs repair and what can be left without repair. 3. Select pipeline repair coating(s). This is a critical and important decision making process.
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In order to confirm the scope of work for coating rehabilitation based upon coating and pipe-to-soil potential surveys and to confirm the difficulties specified, it is necessary to carry out limited exploratory excavations. These exploratory excavations will not only confirm the accuracy of the defect locations and the size and importance of the defect, but visual examination will allow the pipe coating to be studied to determine the mode of coating failure and the steel pipe inspected for any corrosion and other damage. Exploratory excavations should be carried out to maximize information about the whole of the pipeline length to be refurbished. Hence, rather than being chosen at random, selection of possible defect locations to be verified should be considered on the basis of the following parameters taken from a detailed analysis of survey data: • Defect location. A defect at a road crossing or near areas frequented by people is of a higher priority than for example a defect in
full distance of the pipeline under repair. •T o examine selected areas for signs of Stress Corrosion Cracking. Exploratory excavations are recommended not only to gather the above information but also to understand and work out methods for different aspects of rehabilitation activities. Record detailing all findings should accompany a pre-planned detailing all findings to a preplanned questionnaire, pipeline excavation report, together with photography of all interesting findings particularly coating damage and steel pipe surface. The type and nature of any films and calcareous deposits on the steel surface are particularly important as they reflect the effectiveness of the cathodic protection at individual defects. From a detailed analysis of survey data, and having identified what needs repair, a full Scope of Work for a complete rehabilitation project should be established. At each defect location the following work
"Exploratory excavations are recommended not only to gather information about the source and type of corrosion but also to understand and work out the methods for different aspects of rehabilitation activities." the middle of a desert. • Proximity of defects to one another. The close proximity of defects could require complete coating replacement on that section of the pipeline, particularly if there is poor adhesion and easy disbondment occurs. • The size and importance of the defect. It is common to find metal loss at larger defects. However, a variety of different sized defects should be excavated to provide information on what must be repaired and what type of defects can be tolerated. It must be appreciated that not every defect will be cost effective to repair. • Defect corrosion behaviour as predicted by: o Pipe to soil potential and regions of generally poor cathodic protection. o Anodic/cathodic behaviour as predicted by DC voltage gradient technology. • Regions of low soil resistivity which are usually regarded as more corrosive • Terrain variations and presence of rocks as rock will affect trenching ability and requirements for imported back-fill. • Need to inspect locations spread over the
needs to be carried out: 1. Site clearing and grading 2. Hand excavation to locate pipeline 3. Mechanical excavation to fully uncover the pipeline 4. Inspection of existing coating 5. Removal of existing coating 6. Visual inspection of the steel surface before surface preparation 7. Surface preparation 8. Any visual corrosion as general corrosion, pitting, MIC, etc. 9. NDT inspection for SCC 10. Surface preparation and profiling 11. Application of repair coating 12. Backfilling and reinstatement 13. Retesting for coating defects Even after the rehabilitation project has been completed, there will still be large amounts of parent coated pipe in the ground. Therefore, there is a need to understand the coating failure mechanisms to work out if these mechanisms can be managed to extend the life of a pipeline.
The power of Easy . Qote used in Kusile Power station, South Africa
Client: Eskom Contractor: STOPAQ Southern Africa Location: Nkangala district of Mpumalanga, South Africa Year of application: 2015 SFL Technology: STOPAQ New coating system: STOPAQ Self cleaning (Corrosion prevention compound in grey colour) Surface preparation: St 3
Unbreakable Self-Adhering Coating Solutions
Surface preparation at great heights
Surface preparation finished and now surface cleaning by means of isopropanol
Finished application of STOPAQ Self cleaning
Full turn-key contracting by STOPAQ Southern Africa
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Summer 2016
What to look for in a PIBIn the world of the big brands, the struggle between innovation and those that would copy goes on. Seldom does a day pass that the press does not report on disputes between innovators and those that allegedly copy to compete. We are all familiar with Apple vs. Samsung, Google vs. Microsoft, or Nokia vs. Research in Motion. A patent represents an exclusive right granted by a State to an inventor. In exchange for making public the invention (and solving a problem or making a contribution to society’s technological progress), the exclusive right allows the patentee, for a limited period, to prevent others from making, using, selling, or distributing the invention without permission. We are proud to manufacture unique and protected anti-corrosion (visco-elastic) solutions. So our motto is: do it right, do it once!
Advantages of BASF’s Oppanol® A unique set of properties in a single product: • High adhesive strength • Adheres to most substrates, e.g., pp, pe, fbe, and gre • Does not cathodically disband • Extremely low permeability • No internal stress • Long-term stability
Do It Right, Do It Once! • Developing and producing non-toxic anti-corrosion and sealing products • Fast and easy to apply systems • Healthy & safe solutions • Non-polluting and no chemical waste • Protecting the environment, both sea and land • Providing a better working environment • Providing logistical advantages • Offering guaranteed solutions • Being the best at what we do • A reliable and trusted source • Continuous improvement of compositions
non-crosslinkable and no minimum design temperatures
No cathodic disbondment
Does not disbond from blasted or re-rusted steel in a few minutes at ambient temperatures
Fluid properties may be sprayed
Highly chemical resistant
Approved by renowned companies
High impermeability to water and oxygen
Maintains flexibility until -70°C
Real self-healing
Fully amorphous material, can be painted
Maintains fluid phase
Dripping point beyond 130°C
Will not spark at 35 kV
Cohesive fracture leaving compound in place on surface by pulling the netting out of the band
Injectable
Can be applied underwater
No discoloration after water soak immersion test
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Summer 2016
based coating system? Let’s get technical: Water vapour barrier
Immediate Cold-Applied Adhesion
Chemical Properties & Appeareance
H20
• n ≈ 18 – 72.000 • Covalent bonds only • No sensitive chemical groups • Just Carbon and Hydrogen • No possibility to crosslink the polymer chain
SEALANT: Oppanol 80g/m2 Speciality paper
Unbeatable
STOPAQ
Testing of Resistance to Cathodic Disbondment - Self-healing
“Conventional” coatings
0 mm (-3 mm)
>20 mm
Test Results Silicon Rubber
20000
PUR 5500 Oppanol B150
520
Oppanol B100 110 Oppanol B80 110 Oppanol B15N 45 Oppanol B10N 1
10
220 100
1000
10000
Permeability [g.1µm/m2/d]
The Fate of Entrapped Air
Surface Preparation A rusted bolt is pushed into the bottom of a container filled with STOPAQ material. Pressure forces STOPAQ to flow underneath the entrapped air and cover the metal surface. Once covered with Stopaq it will not be replaced by air again. Finally the entrapped air will detach from the metal surface and will move into the STOPAQ material. The coverage is accelerated with temperature and the metal surface is fully covered in the course of time.
St 2-3 Manual cleaning Powertool cleaning - Free from loose parts - Free from biological growth - Free from oil & Grease Above water line, degrease with Isopropanol - Free of foreign matter
Immediate adhesion to PP, Neoprene, alu, PE, ST2/3 prepared steel, wood
100000
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Summer 2016
cases Corrosion is the biggest enemy of metals. It occurs when metal reacts with oxygen and moisture under the influence of the temperature. If corrosion occurs under an insulation layer, it is difficult to detect and counteract. This ‘corrosion under insulation’ (CUI) poses a serious threat to the stability of the metal. It becomes visible on the surface only once a critical stage has been reached. The insulation layer is not the cause of the corrosion. At most, it creates a space where oxygen and moisture can accumulate. In some cases the insulation layer intensifies the corrosion, for example when it is made of a material that absorbs a lot of moisture or when chlorides and acids leach out of the insulation layer. That gives rise to the question of how moisture gets under the insulation layer. Two causes can be identified. The first is when moisture seeps through small leakages in the watertight covering of the insulation layer. This gives rain, production water, steam or groundwater the chance to reach the metal surface. These leaks in most cases should have been prevented. They are often the result of poor design, poor fitting of the insulation, poor use of the material or poor maintenance. Moisture under the insulation layer can also be caused by the forming of condensation. If the temperature of the metal surface is lower than the atmospheric dew point, condensation forms on the surface. The possibility of Moisture under the insulation must be taken into account early during the design phase so that the appropriate type of insulation can be chosen. The corrosion process can be intensified by dirt. Here too, cracks in the insulation layer can result in the penetration of moisture. Chloride, acid and salt also pose special threats to the metal.
Fieldjoint Coating of pre-insulated pipeline at subzero temperatures up to -52 °C Moda Pipeline from China to Russia These substances are sometimes even present in the insulation layer itself. If the insulation layer comes into contact with moisture, these subjects can leach out and corrode the underlying metal. The dirt concentration increases sharply if the moisture evaporates when the temperature rises. Temperature is also a factor that contributes to corrosion. Although evaporation reduces the duration of contact between the moisture and the metal, the higher temperature intensifies the corrosion. That in turn reduces the metal’s life span. There is a good chance of corrosion occurring at temperatures between -4°C (25°F) and 175°C (350°F). At a lower temperature the metal is protected against corrosion by the cold, at higher temperatures the heat keeps the metal dry. There are few objects with a temperature that remain constantly below or above the critical point. This is because of variable operation, temperature variations in parts of the object or different temperatures of parts connected to the object.
200 kilometers Anodeflex around Beijing Suburb city, China AnodeFlex™ is a unique and cost effective way to keep the operation of a pipeline in compliance with DOT or other cathodic protection regulations. It provides consistent and uniform current distribution over the entire steel structure and will eliminate many of the installation and current distribution difficulties inherent in conventional remote groundbed anodes. One of the major uses of the AnodeFlex™ system is in rehabilitation of pipelines, where ageing and degrading coatings no longer provide adequate corrosion protection. Re-coating the pipe is a very expensive solution, often requiring to shut down the pipeline over an extended period of time. In addition, the pipeline operator is facing major problems of obtaining environmental permits and disposal of toxic materials. What is the AnodeFlex™ system AnodeFlex™ is an energy efficient, flexible long linear anode providing an impressed current for use in cathodic protection systems for buried pipelines, tanks and other steel structures. Placed alongside a pipe or other buried metal structure, AnodeFlex™ provides uniform cathodic protection over the full length of the protected structure.
The Anodeflex system is comprised of five (5) main elements: - A copper conductor serving as a low resistance busbar to deliver the required current - A special conductive polymer that seals the conductor from chemical attack while allowing current to flow into the soil -A high performance coke breeze that ensures a consistent low resistance to earth -A fabric jacket securing the coke breeze around the anode cable -A polyethylene fiber wound around the fabric jacking providing mechanical strength to the system Why use AnodeFlex™ systems AnodeFlex™ is a unique and cost effective way to keep the operation of a pipeline in compliance with DOT or other cathodic protection regulations. It provides consistent and uniform current distribution over the entire steel structure and will eliminate many of the installation and current distribution difficulties inherent in conventional remote groundbed anodes. Through a lock and seal mechanism, the Anodeflex splice system provides a high integrity reliable long-term anode to cable and anode to anode connections. Anodeflex™ can be installed in hand excavations, standard cable laying equipment or trenchless technologies. Due to its high tensile strength, Anodeflex™ is particulary suitable for the cathodic protection of HDD pipe and casing requirements.
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Summer 2016
Coatings and Cathodic Disbondment
Anti-aging The True Story Erik Broesder, STOPAQ B.V., the Netherlands, provides an evaluation of coating ageing tests in relation to cathodic disbondment results for underground pipelines. Damage to pipe coating is almost unavoidable during transportation and construction and damage or holidays in pipe coatings may expose the pipe to possible corrosion. Cathodic protection systems are installed to act as a back-up for coating imperfections. However, cathodic protection systems interact with the coating by chemical and physical phenomena, which can lead to cathodic disbondment of the coating. Corrosion may occur underneath the disbonded coating, which is a risk for pipeline owners.
tested for a short period of time, e.g. 30 days. Lifetime expectancy of pipelines however are much longer, typically 30 years or more. During its operating lifetime a coating will age and lose essential properties such as adhesive strength. This can be simulated by Hot Water Immersion testing followed by peel-testing. Results obtained with cathodic disbondment testing do not make much sense if over time the coating spontaneously disbonds because of the coating’s ageing processes.
Testing for cathodic disbondment of all types of “conventional coatings” often reveal disbondment to a certain extent. Contrary to this, properly formulated visco-elastic polymer coating systems do not show any disbondment at all, due to the unique self-healing effect of small defects.
A test specimen coated with a Stopaq coating system comprising Wrappingband CZH and Outerwrap PVC was also subjected to Hot Water Immersion testing. It was aged for 100 days @ 90°C (=Tmax + 20°C) and subsequently adhesion / peel force was tested. The obtained value was the same as found with non-aged samples: 100%! Furthermore, occurrence of self-healing was tested also after Hot Water Immersion 100 days @
Testing for cathodic disbondment is always done on newly applied coatings and are only
90°C. This was completed within the expected period of time for this coating system.
Read the whole story online!
Sealforlife.com
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Summer 2016
RE! A C O T E DAR
Liquid Pipeline Coating Technology
WE150024_ADV_IJSBEER_216bx303h_DEF_CONTOUREN.indd 1
15-01-15 10:24
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Facts and figuares about the Liquid pipeline Coating Technology
Versatile and cost effective All Powercrete® formulations are developed to be field friendly and cost effective. The ease of application can be achieved either by hand (roller, brushes or trowels) or with spray equipment which delivers high-build in a single multi-pass layer, thereby reducing application time. This engineered application flexibility allows the contractor to stock and manage a single product for any application requirement. As with all coatings, the performance of Powercrete® is governed by the care and attention to detail that is exhibited by the applicator. In general, all prevailing standards call for a metal surface to be clean, free of grease, salts and other contaminations. Additionally, an angular surface profile has to be achieved to increase adhesion strength to the substrate. The versatility of Powercrete® allows it to be used as an abrasion resistant overlay to FBE and abrasive blasted direct to metal (DTM) coating. The final coating thickness for either use should be specified by the end user. Below ground soil conditions, the wall thickness of the pipe and the application must be considered in determining the final thickness. Why use Powercrete® coatings Powercrete® is a solvent free epoxy coating used for rehabilitation, directional drilling, girth weld protection, bends, fittings and odd shapes, offshore applications, patch and repair and potable water applications. Power-
cases
crete® epoxies are designed to meet the requirements of the most demanding pipeline applications. With 20+ years of experience in the pipeline industry, Powercrete® has been recognized as the category performance leader in industry-sponsored independent testing. Performance Powercrete® epoxies are designed to meet the requirements of the most demanding liquid coating applications. With years of experience in the pipeline industry, Powercrete® has established its reputation based on the following key material and performance characteristics: • 100% solids content with no volatile organic compounds and no isocyanates • Excellent adhesion to bare steel and fusion bonded epoxy mainline coatings • Excellent cathodic disbondment resistance at ambient and maximum operating temperatures • Superior resistance to water immersion including sea water and ground water over a broad pH range • Operating temperatures up to 300°F (150°C) • Industry leading mechanical properties for impact and abrasion resistance • Record setting directional drills on continuous 24” pipe pulls of 7,500’ • Fast cure epoxy for quick backfill • Ease of application for brush, roller, hand, or spray
PC-DD (black) and PC-J (brown) in a Tianjin Gas Net pipeline with 508 mm diameter for HDD, China 2008
Powercrete R-150 Skin-Effect heat traced pipeline solution Powercrete R-150 Skin-Effect heat traced pipeline solution This 80 kilometre Cairn India pipeline was build to transport hydrocarbon material rich and high in wax content. Due to this, the pipeline was welded with a 1inch sect tube on the 24inch dia mainline carrying heat tracing wire to provide the ‘skin effect’ to which afterwards the pipeline was insulated to maintain 100°C to 120°C while in service.
cases
Internal protection plant applied
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Summer 2016
Dredging vessel guarantees Ems passage to Meyer Werft thanks STOPAQ Of course, we exaggerate a little, but the dredging vessel which should keep the depth of the Ems up to date, suffered from leakage. At the Meyer Werft in Emden, Germany are built the biggest cruisships in the world and access should be kept open at all times. Thanks to STOPAQ on board the dredging vessel could be stopped the leak and the vessel continued to do her important work.
Keep your business blooming
Just like pipelines, the boughs of a tree transport vital elements to where they’re needed. So why not protect both in the same way?
Before
After
A test site of fruit trees in Belgium. STOPAQ enabled damaged boughs to heal, leading to healthy growth.
At a fruit orchard in Belgium, Stopaq enabled dying limbs to heal, and life to be restored. Trees depend upon branches, like up- and downstream energy systems depend upon distribution pipelines. Both transport vital elements to where they are most needed. When your business depends on ensuring that vital e lements reach their destinations,
damage prevention and maintenance are critical elements of business. Like the damaged fruit tree, Stopaq will safeguard pipelines and other critical infrastructure against any form of external corrosion that keeps your vital energy flowing. Stopaq enables business to bloom.w
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Summer 2016
VNO / NCW Noord visits STOPAQ Stadskanaal
On Tuesday, October 4th Stopaq opened its doors to more than 90 member of VNO/NCW (An interest group for entrepreneurs.). Frits Doddema, Global General Manager and Executive Vice President of STOPAQ showed the Seal for Life products and possible applications. The Waterfront Brigade showed the application of STOPAQ under water. Two divers from the Waterfront brigade demonstrated it live in a huge water tank.After a tour of the company, there was time for networking while enjoying a snack and drink.
Protecta-Mesh
Seal For Life Protection technology Flexible mesh products are used in major pipeline projects to replace the thick sand collar that would traditionally have been placed to cushion the protective coating around a steel pipe. Sand is a primary resource and is not always available locally to an overland project. Even when it is, its bulk means there is a heavy environmental price to pay for its transportation. Sand requires plant for installation and it is difficult to place consistently around a pipe. A polymeric mesh is more compact to transport and it can be installed relatively quickly and with consistency. As with sand, the mesh prevents stone in the backfill from abrading and puncturing the pipeâ&#x20AC;&#x2122;s coating which would otherwise interrupt the cathodic protection system.
Once the trench has been backfilled Protectamesh HD continues to provide protection against abrasion by sharp stones during geological movements.
STOPAQ number plates in Perth Australia! New office in Perth Australia and on the way in STOPAQ number plates cars! Contact Simon Gobrial and, or Fikry Barouky of ACT for more information. Their website is: www.anticorrosiontechnology.com
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Summer 2016
KELVIN: beyond engineering
KELVIN
®
PATENTED
For the maximum installation comfort & performance SFL Services developed the very first intelligent assistant tool in Heat Shrink Sleeve installation. The intelligent KELVIN offers optimal and guaranteed installation comfort and performance reading the characteristics of the Sleeve materials applied. The KELVIN recognizes the softening point of the Sleeve adhesive layer as well as the duration of the liquid stage the adhesive is kept in, the so called bonding phase.
Advantages KELVIN
• Shortest installation time - Operation by 2 engineers only • Easy operation by fully pre programmed PLC • Available in sizes ranging from 10” up to 52” • Maximum technology to cost ratio • Low weight - no need for cranes • Multiple units operating at same time • Avoiding sleeve damage by overheating • Avoiding installation mistakes • Full mobile units • No HSE issues • Direct contact between sleeve and Kelvin avoiding weather conditions influencing the procces • Weight of 16”unit only 15Kg.
• Pre-programmed cycle - consistency of installation • Allows a variety of shrinkable sleeves to be used, from soft mastic-based shrink sleeves to hard, hot melt shrink sleeves provided with a stiff and hard backing material (e.g. HDPE) without preheating the pipe as sembly • Operational temperatures of the heating blanket are monitored by temperature sensors connected to the control unit. Sleeve shrink temperatures are displayed at the PLC display • Compact size - minimal packaging space requird in confined FJC areas • Power requirement 4Watt/cm2 • Maximum power to weight ratio
KELVIN, another tool in your arsenal to apply uniformly and consistently a heat shrinkable sleeve or tape without a manual gas torch
How KELVIN direct contact works Heatblanket Backing Adhesive Steel
•H eat is transferred directly onto and through the backing. •C reate a Heat Bath of the adhesive •F ull homogenous heating of the complete adhesive •T emperature transition to the steel/primed substrate • “ Soft” heating avoiding “quenching” effect on the cold substrate.
Jeroen Kuipers (Offshore Sales) and Sander Hofstee (AfterSales & Turnkey SFL Services Manager)
Revolutionary!
A true revolution is the retractable Emitter Ring that allows minimum space for the application and therefore even use in the ditch!
This way of opening the Emitter Ring also protects the lamps of the lower part when transported to and from the job site and during on-site transport.
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Summer 2016
cases
Unbreakable Self-Adhering Coating Solutions
Above ground H-beams and other structural beams Client Shell UK Contractor Wood Group, CapeLocation Mossmorran, Scotland, United Kingdom Object Structural Object dimensions Various I-Beam and H-Beams Year of application 2013 Existing coating system 3 layer (zinc phosphate primer, epoxy midcoat, PU topcoat)Reason Severe corrosion due to failure and weathering of existing Applied coating system STOPAQ basecoat, PU topcoat black Surface preparation St 2 / St 3, water jetting / Sa 2 ½ on pitted area Temperatures +5 to +25 ambient, +10 to +25 surface
Powercrete DD 100% Solids Liquid Epoxy Coating Powercrete DD is a 100% solids, solvent-free, high-build, extreme performance liquid epoxy polymer concrete designed for directional drill, thrust bore and pull-through applications. Powercrete DD is applied directly over the mainline coating of a pipeline such as FBE (Fusion Bonded Epoxy) and other coatings. It has been specified and installed successfully for years and has a proven track record as an abrasion resistance overlay (ARO).
Applications: - Directional Drilling - Thrust (slick) Bore - Pull Throughs - ARO Coating - Abrasion Resistant Overlay -P ipeline Protection in Severe Handling Applications - Protection of Mainline Coatings Compatible with FBE - Stand-Alone Coating
Factory applied water pipelines
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Summer 2016
Unbreakable Self-Adhering Coating Solutions
I n d u s t r i
c100 m0 y30 k20