ECS - Electrotechnical Certification Scheme Health, Hygiene and Environment Questions and Answers — Questions and Answers
Question 1: An electrician is about to use a solvent-based cable cleaner in a poorly ventilated basement. According to the Control of Substances Hazardous to Health (COSHH) Regulations, what is the first and most preferable control measure their employer should have considered?
- Ensuring the electrician wears a suitable respirator.
- Providing portable fans to increase air circulation.
- Issuing barrier cream and gloves to protect the skin.
- Substituting the solvent cleaner with a non-hazardous, water-based alternative. (Correct answer)
Correct answer: Substituting the solvent cleaner with a non-hazardous, water-based alternative.
The COSHH Regulations require employers to follow a hierarchy of control. The highest priority is to eliminate the hazard or, if that's not possible, substitute the hazardous substance with a safer alternative. PPE, such as a respirator, is considered the last line of defence.
Question 2: Under the Control of Asbestos Regulations 2012, what is a primary legal duty for an electrician before starting work in a building constructed before the year 2000?
- To take samples of any suspicious materials for immediate testing.
- To have received appropriate asbestos awareness training. (Correct answer)
- To carry a P3-rated mask at all times in case of accidental exposure.
- To obtain a license from the HSE for any potential contact with asbestos.
Correct answer: To have received appropriate asbestos awareness training.
Regulation 10 of the Control of Asbestos Regulations 2012 mandates that employers must ensure any employee liable to be exposed to asbestos receives adequate information, instruction, and training. This 'awareness' training helps workers identify potential asbestos-containing materials (ACMs) and know what to do if they find them. Taking samples and removal are specialist, often licensed, activities.
Question 3: According to the Control of Noise at Work Regulations 2005, what action is an employer legally required to take when the daily personal noise exposure of an employee reaches the lower exposure action value of 80 dB(A)?
- Make the use of hearing protection mandatory in the area.
- Provide suitable hearing protection and make it available to employees. (Correct answer)
- Arrange for immediate health surveillance for the employee.
- Stop the work until the noise can be engineered to a lower level.
Correct answer: Provide suitable hearing protection and make it available to employees.
The lower exposure action value is 80 dB(A). At this level, employers must assess the risk, provide information and training, and make hearing protection available to employees who ask for it. The use of hearing protection does not become mandatory until the upper exposure action value of 85 dB(A) is reached.
Question 4: An electrician uses a hammer drill for several hours each day. To mitigate the risk of Hand-Arm Vibration Syndrome (HAVS), which of the following is an effective administrative control?
- Ensuring the tool is well-maintained and uses sharp drill bits.
- Providing the latest model of anti-vibration gloves.
- Implementing a work schedule that rotates the user between high-vibration and low-vibration tasks. (Correct answer)
- Encouraging the employee to exercise their fingers during breaks.
Correct answer: Implementing a work schedule that rotates the user between high-vibration and low-vibration tasks.
Administrative controls focus on changing work practices. Implementing a job rotation schedule limits an individual's total exposure time to the vibrating tool, which is a key administrative control for managing HAVS risk. Tool maintenance is an engineering control, gloves are PPE, and finger exercises are a good practice but not a formal control measure.
Question 5: During a commercial lighting upgrade, an electrician removes a large quantity of old fluorescent tubes. According to the Waste Electrical and Electronic Equipment (WEEE) Regulations, how must these tubes be disposed of?
- They can be placed in a general waste skip as long as they are not broken.
- They should be returned to the client to arrange disposal.
- They must be segregated and treated as hazardous waste. (Correct answer)
- They can be disposed of with other scrap metal for recycling.
Correct answer: They must be segregated and treated as hazardous waste.
Fluorescent tubes contain mercury and are classified as hazardous waste under the WEEE Regulations. They must be segregated from general waste and disposed of via a licensed waste carrier to a specialist recycling facility.
Question 6: Which of the following is a mandatory welfare facility that must be provided on a construction site, according to the Construction (Design and Management) Regulations 2015 (CDM)?
- A supply of wholesome drinking water. (Correct answer)
- A designated and equipped smoking shelter.
- A canteen serving hot food.
- Secure lockers for every individual's tools.
Correct answer: A supply of wholesome drinking water.
Schedule 2 of the CDM Regulations 2015 lists the minimum welfare facilities required. An adequate supply of wholesome drinking water is a fundamental requirement. While rest facilities with the ability to prepare food are required, a full canteen is not, and lockers are only required in specific circumstances (e.g., for storing special work clothes).
ECS - Electrotechnical Certification Scheme Health, Hygiene and Environment Questions and Answers
An electrician is about to use a solvent-based cable cleaner in a poorly ventilated basement.
According to the Control of Substances Hazardous to Health (COSHH) Regulations, what is the first and most preferable control measure their employer should have considered?