Safety training
Control of Hazardous Energies Standard / V5 10032026
2. TERMS AND DEFINITIONS
Term
Definition
Approach boundaries
As part of the risk assessment process for electrical work, approach boundaries should be determined. There are two shock protection boundaries; the Limited Approach Boundary and the Restricted Approach Boundary, that must be established in order to provide a safe distance for personnel from exposed, energized electrical components. For supporting guidance on good working practices on approach boundaries refer Annex 2 Work instruction approved by the company responsible for the work described, according to its internal processes. Normally done with its corresponding risk assessment that will include the control measures for all risks identified. An explosive electrical discharge that occurs when current flows through the air between conductors, releasing intense heat (up to 19,000 °C), light and blast shock wave. This dangerous event can pose significant risks of burns and blast injuries.
Approved work instruction
Arc Flash
Deranged equipment
Equipment that is suspected to be damaged and must be treated with more caution than equipment in its normal condition.
Electrical work
Any task performed on an electrical installation that requires specific electrical knowledge to be performed safely and correctly. Examples: install components, alter a circuit, take electrical measurements, replace a component, create an electrically safe work condition. Establishing an electrically safe work condition is the mandatory, step-by-step process of de-energizing, locking/tagging out, and verifying the absence of voltage on electrical equipment before work begins to prevent shock and arc flash injuries. It ensures equipment is fully isolated and safe to touch before work starts. For supporting guidance on good working practices on establishing an electrically safe work condition refer Annex 2
Establishing an electrically safe work condition
Exposed electrical parts Electrical components or parts capable of being inadvertently touched or approached nearer than a safe distance by a person, due to not being properly enclosed or insulated (e.g. IP0X, IP1X).
Any energy (electrical, mechanical, hydraulic, pneumatic, chemical, thermal, gravitational force etc.) that could cause injuries to personnel.
Hazardous energy
High Voltage
In this GWO training standard, the term High Voltage is used for voltages normally exceeding low voltage. The exact voltage designation varies globally depending on where you work.
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