Personal Protective Equipment (PPE) Flashcards

An electrician is required to work on a low voltage distribution board where there is a significant risk of an arc flash. According to UK guidance, what is the most critical factor in selecting the appropriate arc flash protective clothing?

Answer: The incident energy level (cal/cm²) calculated for that specific point.

While system voltage and prospective short circuit current are factors in calculating it, the definitive value for selecting arc flash PPE is the calculated incident energy, measured in calories per square centimetre (cal/cm²). The PPE's Arc Thermal Performance Value (ATPV) must exceed the calculated incident energy level to provide adequate protection.

Which British Standard specifically covers the requirements for electrically insulating helmets for use on low voltage installations?

Answer: BS EN 50365

BS EN 50365 is the specific European standard for electrically insulating helmets designed for working live or near live parts on low voltage installations (up to 1000V AC or 1500V DC). BS EN 397 covers general industrial safety helmets, BS EN 166 relates to eye protection, and BS EN 60903 is for insulating gloves.

When using standard electrically insulating gloves conforming to BS EN 60903, what additional PPE is strongly recommended to be worn over them to protect against mechanical hazards like punctures or cuts?

Answer: Leather protector over-gloves.

BS EN 60903 specifies that standard insulating gloves provide electrical protection but may be susceptible to mechanical damage. To protect their integrity, it is standard practice and highly recommended to wear suitable leather protector gloves over the insulating gloves.

An electrician is carrying out a pre-use check on their Class 1 insulating gloves. According to best practice, what is the most effective method for identifying small punctures or air leaks?

Answer: Performing an air inflation test by rolling the cuff to trap air.

The recommended pre-use check for insulating gloves involves trapping air inside by rolling the cuff tightly towards the fingers and then squeezing the glove to inflate it. This makes small holes or punctures, which would compromise safety, much easier to detect by listening for escaping air or feeling the pressure loss.

Under the Personal Protective Equipment at Work Regulations 2022, what is the primary responsibility of an employer regarding PPE?

Answer: To provide suitable PPE free of charge to all employees and 'limb (b) workers', and ensure it is properly maintained and its use is understood.

The Personal Protective Equipment at Work Regulations 2022 extended the employer's duty to provide suitable PPE free of charge beyond just employees to include 'limb (b) workers' (those with a more casual employment relationship). The duty includes assessing suitability, maintenance, and providing training on its correct use.

Which of the following is NOT considered a primary function of standard safety footwear for an electrician working on a typical construction site?

Answer: Providing the main source of electrical insulation when working live.

While some safety footwear has electrical insulating properties (EH rating), it should not be relied upon as the primary source of protection when working live. The primary protection comes from insulated tools, insulated gloves, and safe isolation procedures. The main functions of standard site safety boots are to protect against impact, puncture, and slipping.