Safety and health in building and civil engineering
32.7.4. Oil escaping from tanks and drums should not be able to flow to within 30 m (100 ft) of a shaft or tunnel mouth.
32.7.5. As far as practicable, combustible materials should be kept out of tunnels.
32.7.6. No flammable liquids should be stored underground in bulk.
32.7.7. Lubricating oils, grease and rope dressings underground should:
be kept in closed metal containers; and
be stored in a safe place away from shafts, hoists, explosives magazines and timber.
32.7.8. Large supplies of grease or lubricating oil should not be kept underground.
32.7.9. Oily waste and rags used with machinery should:
be kept in closed metal containers; and
be removed to the surface at frequent intervals.
32.7. 10. Waste and decayed timber should be promptly removed from the underground workings.
32.7.11. No combustible rubbish of any kind should be allowed to accumulate underground.
32.7.12. Unless there is complete freedom from fire or explo- sion risk, no naked lights and no smoking should be allowed
underground.
32.7.13. Petrol engines should not be used underground except under conditions approved by the competent authority.
32.7.14. If welding or flame cutting is done underground:
timber supports and other combustible structures or materials
should be protected by a fireproof screen;
suitable fire extinguishers should be kept readily available; and
a constant watch should be kept for outbreaks of fire.
32.7.15. Sufficient fire-fighting equipment of suitable types should be provided in tunnelling operations.
292
Electricity