Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 418

4. Cylinders stored inside of buildings shall be away from highly
combustible materials and in locations where they are not subject to
excessive rise in temperature, mechanical injury or tampering. All
cylinders including empty ones shall have their caps in place and all
valves tightly closed.
5. Acetylene and liquefied fuel-gas cylinders connected to a portable
manifold inside a building shall be manifolded in a vertical position.
SECTION 10.4.17.4
PROTECTION AND MAINTENANCE
A. Hotworks equipment to be used shall be in satisfactory operating
condition.
B. Where combustible materials, such as paper clippings, wood shavings, or
textile fibers are on the floor, the floor shall be swept clean for a radius of
eleven meters (11 m). Combustible floors (except wood on concrete)
shall be kept wet, be covered with damp sand, or be protected by
noncombustible or fire retardant shields. Where floors have been wet
down, personnel operating arc welding or cutting equipment shall be
protected from possible shock.
C. Opening or cracks in walls, floors, or ducts within eleven meters (11 m) of
the site shall be tightly covered with fire-retardant or noncombustible
material to prevent the passage of sparks to adjacent areas.
D. Conveyor systems that might carry sparks to distant combustibles shall be
shielded.
E. Fully charged hose line and at least one (1) fire extinguisher that are
appropriate for the type of possible fire shall be available immediately at
the work area.
F. If hotworks is done in close proximity to a sprinkler head, a wet rag shall be
laid over the head and then removed at the conclusion of the welding or
cutting operation.
G. In hotworks done inside ships docked/anchored on shore or in shipyards,
and in tanks and confined spaces where a concentration of combustible
fumes/gases and liquids are reasonably suspected, an explosimeter shall
be employed to determine the level of combustible fumes/gases present.
Hotworks shall not be permitted if the concentration of the fumes/gases
falls between the lower explosive/flammability limit (LE/FL) and upper
explosive/flammability limit (UE/FL). Standard range for LE/FL and UE/FL
shall be based with internationally accepted standards.
H. Under no conditions shall acetylene gas be generated, piped (except in
approved cylinder manifold), or utilized at a pressure in excess of one and
five-hundredths kilograms (1.05 kg) per square centimeters gauge
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