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Touch voltage is not enough - meeting our duty of care

机译:触摸电压不够 - 与我们的护理履行职责

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The vast majority of engineering design decisions are multivariate, and earthing system design is no exception to the rule. Safety targets are but one dimension, supported beneath by layers of decisions. Additionally many other critical decisions are to be made before an installation may be signed off as being `fit for purpose'. Designers, constructors and asset owners or principles (utilities, plant/mine owners) all share a duty of care that is not met by simply stating that `all precautions should be taken'. This paper examines the various decisions and the implications on the ability to maintain an effective safety critical system. A so-called deterministic design is always a probabilistic design simply by virtue of the inherent nature of the system and process. Significant decisions are made both consciously or unconsciously in any earthing system implementation. Even if not consciously evaluating the probability functions they exist nonetheless and each decision made (or assumed or ignored) will incorporate a probabilistic element. What level of understanding of the values and interdependencies between the various parameters and functions does a designer need to ensure the final result meets and continues to meet their duty of care?
机译:绝大多数工程设计决策是多变量的,并且接地系统设计并不例外规则。安全目标只是一个维度,由决定层下面支持。另外,在安装之前要进行许多其他关键决定,则可以签名为“适合目的”。设计师,建设师和资产所有者或原则(公用事业,工厂/矿主)所有这些都分享了不通过简单地说不到的“应该采取所有预防措施”的责任。本文介绍了各种决策和对维护有效安全关键系统的能力的影响。所谓的确定性设计始终是概率设计,仅仅是通过系统和过程的固有性质。在任何接地系统实施中有意识或无意识地制定了重大决定。即使没有意识地评估概率函数,它们仍然存在,并且所做的每种决定(或假设或忽略)都将包含概率元素。在各种参数和功能之间的价值观和相互依赖程度和各种参数和功能之间的理解程度是设计者需要确保最终结果满足并继续满足他们的护理职责?

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