Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 108

e. Control valves shall be readily accessible to minimize water dam-
age.
f.
A noncombustible draft curtain shall be provided extending at
least fifty one (51) centimeters below and around the opening
and a solid non-combustible wellway housing at least one and a
half (1.5) meter long measured parallel to the handrail, and
extending from the top of the handrail enclosure to the soffit of the
stairway or ceiling above, at each escalator floor opening. When
necessary, spray nozzles shall be protected against mechanical
injury or tampering that might interfere with proper discharge.
g. The spray nozzle system shall operate automatically from thermal
response elements of the fixed temperature type, so placed with
respect to the ceiling (floor) opening that the spray nozzle system
comes into action upon the advance of heat towards the
escalator opening. Supervised smoke detector located in or near
the escalator opening may be used to sound an alarm. The spray
nozzle systems shall also be provided with manual means of
operation.
h. Control valves for the spray nozzle system and approved smoke
detection or thermostatic devices shall be supervised in
accordance with applicable provisions of Section 10.2.6.4 of this
IRR.
E. Partial Enclosure Method
1. Under the conditions specified in paragraph B of Section 10.2.6.2 of this
IRR, escalator opening may be protected by a partial enclosure, so
designed as to provide an effective barrier to the spread of smoke
from floor to floor.
2. Partial enclosure shall be of construction providing fire resistance
equivalent to that specified for stairway enclosures in the same
building, with openings therein protected by approved self-closing fire
doors or may be of approved wired glass and metal frame
construction with wired-glass panel doors. Such doors may be
equipped with electric opening mechanism to open the door
automatically upon the approach of a person. However, the
mechanism shall be such as to return the door to its closed position
upon any interruption of electric current supply, and the adjustment
shall be such that the pressure of smoke will not cause opening of the
door.
F. Firestopping Concealed Spaces
1. In new construction, any concealed space, in which materials having
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