Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 403

5. Stairway enclosures and structures housing elevators shall be enclosed
by non-combustible walls having a fire-resistance rating of at least two
(2) hours, and equipped with fire doors at least one and a half (1.5)-
hours fire resistance rating.
6. Each manufacturing room shall have at least two (2) exits, well sepa-
rated or remote from each other, one of which shall be directly to the
outside. Access to all exits shall be kept clear and doors shall open in
the direction of travel. Door fastenings shall be of the safety release
type. Supervisory management offices, change and locker rooms
located in manufacturing buildings shall be provided with exits
adequate to accommodate the number of occupants. The means of
egress shall not be exposed by drainage facilities.
7. Structures in which Class I liquids or finely divided flammable solids are
processed shall be provided with explosion or deflagration venting.
8. Enclosed buildings in which Class I liquids are processed or handled in
open containers and equipment shall be adequately or continuously
ventilated at a rate of not less than one cubic meters per minute (1
m 3 /min) for every six and a half square meters (6.50 m 2 ) of solid floor
area. This shall be accomplished by exhaust fans taking suction at
floor levels and discharging to a safe location outside the building.
Provisions shall be made for introduction of non-contaminated intake
air in such a manner that all portions of solid floor areas will be subject
to continuous distributed movement of air.
9. Enclosed buildings in which Class I liquids are processed or handled in
closed containers and equipment shall be equipped with a point-of-
use and point-of-emission local exhaust ventilation system designed to
prevent accumulation of flammable vapors during the operation of
the equipment. This shall be accomplished by exhaust fans taking
suction at all potential points of flammable vapor release from the
equipment. During a shutdown period, when equipment is open and
there is a potential for vapor emission, sufficient ventilation shall be
provided to maintain a safe atmosphere.
10. Heating in hazardous areas, if required, shall be provided by indirect
means. Ignition sources such as open flames or electrical heating
elements except as provided in this IRR shall not be used within the
building.
11. An organic coating manufacturing operation shall be accessible from
at least one side for the purpose fire control. Approved aisles shall be
maintained for the unobstructed movement of personnel and fire
suppression equipment.
12. Where topographical conditions are such that flammable and com-
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