COSHH Flashcards
6 cards from real CSCS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 COSHH flashcards as text
What are the employer's duties regarding COSHH training for construction workers?
Answer: Provide information, instruction, and training to all employees who may be exposed to hazardous substances, and repeat training when circumstances change
Under COSHH Regulation 12, employers must provide suitable and sufficient information, instruction, and training to all employees who may be exposed to hazardous substances. Training must cover the hazards, control measures, use of PPE, and emergency procedures. It must be updated when work practices or substances change.
Which of the following activities on a construction site would typically require a COSHH assessment?
Answer: Mixing cement or cutting concrete blocks
Mixing cement exposes workers to cement dust (containing hexavalent chromium, a skin sensitiser) and wet cement (alkaline, causes burns). Cutting concrete generates respirable crystalline silica dust. Both activities require a COSHH assessment to identify hazards and implement controls such as LEV, water suppression, and appropriate PPE.
Under COSHH, what is the meaning of 'adequate control' of exposure?
Answer: Reducing exposure to as low as is reasonably practicable and, for substances with a WEL, ensuring that limit is not exceeded
Under COSHH, adequate control means reducing exposure to as low as is reasonably practicable. For substances with a WEL, exposure must not exceed that limit. For carcinogens, mutagens, and substances with no WEL, the duty is to reduce exposure as far as is reasonably practicable, applying the hierarchy of control.
What does the GHS exploding bomb symbol indicate?
Answer: Unstable explosive or substance with mass explosion hazard
The GHS exploding bomb symbol (GHS01) indicates explosive substances, self-reactive substances, and organic peroxides that may explode under certain conditions. On construction sites, this may apply to certain cartridge-operated tools and specialist demolition materials.
How should hazardous substances be stored on a construction site according to COSHH and CLP requirements?
Answer: In properly labelled, sealed containers in a secure, ventilated area with appropriate bunding and segregation of incompatible substances
Hazardous substances must be stored in clearly labelled, sealed containers in secure, ventilated storage areas. Incompatible substances (e.g., oxidisers and flammables) must be segregated. Bunding must be provided for liquids to contain spills (typically 110% of the largest container). Access should be restricted to authorised persons.
Under COSHH Regulation 8, what must employers do regarding control measures?
Answer: Ensure that control measures are maintained in an efficient state, in efficient working order, in good repair, and in a clean condition
COSHH Regulation 8 requires employers to ensure that all control measures (including LEV, enclosures, and PPE) are maintained in an efficient state, in efficient working order, in good repair, and in a clean condition. Regular inspection, testing, and maintenance records must be kept.