Abrasive Wheels Training Certificate PPE and Risk Assessment 2

Question 1

What type of hearing protection may be required during prolonged abrasive wheel operations?

Accepted Answer

Ear defenders or ear plugs conforming to BS EN 352 when noise exceeds 80 dB(A)

Answer

Under the Control of Noise at Work Regulations 2005, hearing protection must be made available at 80 dB(A) (lower exposure action value) and must be worn at 85 dB(A) (upper exposure action value). Abrasive wheel operations commonly exceed these levels. Protection must conform to BS EN 352.

Question 2

Which of the following is a key control measure to reduce dust exposure during dry grinding operations?

Accepted Answer

Local exhaust ventilation (LEV) fitted at the point of dust generation

Answer

Local exhaust ventilation (LEV) is the primary engineering control for reducing dust exposure during dry grinding. LEV captures dust at the point of generation before it can enter the operator's breathing zone. Under COSHH, LEV systems must be examined and tested at least every 14 months.

Question 3

What must a suitable and sufficient risk assessment for abrasive wheel use include?

Accepted Answer

Identification of hazards, who might be harmed, evaluation of risks, control measures, and review date

Answer

Under the Management of Health and Safety at Work Regulations 1999, Regulation 3, a suitable and sufficient risk assessment must identify hazards, identify who might be harmed and how, evaluate the risks and decide on control measures, record significant findings, and set a review date.

Question 4

When is respiratory protective equipment (RPE) required during abrasive wheel operations?

Accepted Answer

When engineering controls such as LEV cannot adequately control dust exposure below workplace exposure limits

Answer

RPE is required under COSHH when exposure to hazardous dust cannot be adequately controlled below workplace exposure limits (WELs) by other means such as LEV. RPE must be suitable for the hazard, properly fitted (face-fit tested for tight-fitting masks), and maintained.

Question 5

Under the Hand Arm Vibration Regulations 2005, what is the daily exposure action value for hand-arm vibration?

Accepted Answer

2.5 m/s²

Answer

The daily exposure action value (EAV) for hand-arm vibration is 2.5 m/s² A(8). Above this level, employers must introduce a programme of controls. The exposure limit value (ELV) is 5.0 m/s² A(8), which must not be exceeded. Angle grinder use is a common source of HAV exposure.

Abrasive Wheels Practice Test

Abrasive Wheels Practice Test

Abrasive Wheels Training Certificate PPE and Risk Assessment 2