ETO ETO Exam papers 📅 Jul 2024

Exam Question

State how safety is achieved with regard to gas emission in battery rooms where a large number of lead-acid cells are stored with reference to

(a) Provision of lighting (4)

(b) Ventilation if a fan is fitted (4)

(d) Use of tools and replacement of defective batteries (4)

Reference Answer

Safety in battery rooms housing numerous lead-acid cells is important due to the risk of hydrogen gas emission.
(a) Provision of Lighting:
Safety is ensured through the exclusive use of explosion-proof light fittings, switchgear, and wiring. Fluorescent or spark-generating lights are strictly prohibited. Light fittings must be wall-mounted or suspended at least 50cm from the ceiling, avoiding direct placement above batteries and chargers. Cable entry points must be meticulously sealed, and fittings must be weatherproof to prevent damage and ensure continuous operation. Finally, all lighting that meet the correct specifications to be used.
(b) Ventilation (with a fan):

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