Hierarchy control method

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Considerations regarding how to use the Risk Rating to priorities and implement action plans. Once the level of risk has been determined the following table may be of use in determining when to act to intervene and institute the control measures. RISK LEVEL Very High

High

Medium

Low

Act immediately to mitigate the risk.Either eliminate, substitute or implement engineering control measures.

Remove the hazard at the source. An identified very high risk does not allow scope for the use of administrative controls , even in the short term.

Act immediately to mitigate the risk. Either eliminate, substitute or implement engineering control measures.

An achievable timeframe must be established to ensure that elimination, substitution or engineering controls are implemented.

If these controls are not immediately accessible, set a timeframe for their implementation and establish interim risk reduction strategies for the period of the set timeframe.

NOTE: Risk (and not cost) must be the primary consideration in determining the timeframe.

Take reasonable steps to mitigate the risk. Until elimination, substitution or engineering controls can be implemented, institute administrative or personal protective equipment controls. These “lower level” controls must not be considered permanent solutions. The time for which they are established must be based on risk. At the end of the time, if the risk has not been addressed by elimination, substitution or engineering controls a further risk assessment must be undertaken.

Interim measures until permanent solutions can be implemented: • Develop administrative controls to limit the use or access. • Provide supervision and specific training related to the issue of concern. (See Administrative Controls below)

Take reasonable steps to mitigate and monitor the risk. Institute permanent controls in the long term. Permanent controls may be administrative in nature if the hazard has low frequency, rare likelihood and insignificant consequence.


Hierarchy of Control

Interventions identified may be a mixture of the hierarchy in order to provide as low as reasonably practicable exposure. Elimination

Eliminate the hazard.

Substitution

Provide an alternative that is capable of performing the same task and is safer to use.

Engineering Controls

Provide or construct a physical barrier or guard.

Administrative Controls

Develop policies, procedures practices and guidelines, in consultation with employees, to mitigate the risk. Provide training, instruction and supervision about the hazard.

Personal Protective Equipment

Personal equipment designed to protect the individual from the hazard.

The "Hierarchy of Control" can be useful - as can other heuristic devices such as "Prevention, Preparedness, Response & Recovery" or "Engineering, Education, Encouragement, & Enforcement". As a general approach. A "mix of interventions" usually provides the best result.


关于如何使用优先事项的风险等级和实施行动计划的考虑事项。 一旦确定风险的水平,下表就能用以确定何时采取行动,以干预和采取控制措施。 风险级别 非常高

立即以减轻风险,包括消除风险、 采取替代措施或实施工 程控制措施。

在根源删除危险。 已确定的极高风险不允许等待-甚至在短期内 行政管理的控制。

立即行动以降低风险。 消除、 替代或实施工程控制措施。 必须建立一个可以实现的时间,以确保该消除、 替换或工程控制 的实施。 高

如果这些应急的控制措施不可直接实施,须设置执行的时 间,并为在设定的时间内建立临时风险减缓策略。

注:风险 (而不是成本) 必须是依据确定的时间表要首先考虑 的。

采取合理步骤,降低风险。 直到可以实现风险的消除、 替 换或工程控制。行政复议跟进或个人防护设备的控制。对 于"低级别"风险,不必考虑永久性的控制措施。 在到达时 间节点时,如果所采取的消除、 替换或工程控制不能令风 险得到有效降低,则必须采取进一步的风险评估。

可以实施永久解决方案之前的临时措施: · 制定行政控制措施来限制使用或接近。 · 提供对关注的问题的监督及有关的具体培训。 (请参阅下面的 行政控制)

采取合理步骤,以减轻和监测的风险。 建立长期永久的控 制措施 。永久的控制措施可能属行政性质,须依据危险的 频率、可能性和后果来制定。 层次性的控制

干预措施的确定可能以一种层次性的结构进行控制,以便提供合理地尽可能低的切实可行的消耗和干扰。 消除

消除危害。

替代

提供一种替代的方法,使之能够执行和完成相同的任务,并更加 安全。

工程控制

提供或构建一个物理屏障或控制监视措施。

管理控制

经过与雇员进行磋商,制定出政策、 程序、做法和减少风险的的 准则。 针对有关的危险提供培训、 指导和监督。

个人防护设备

旨在保护个人不受危害的个人设备。

层次性的控制结构可以增加其他启发式的措施如"预防,准备,响应和恢复"或 "工程,教育、 激励,强制执行"。 作为一种通用的方法。 层次性的干预措施通常提供了最佳的结果。


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