Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 429

SECTION 10.5.1.6
MATERIALS OF CONSTRUCTION
A. For the purpose of this IRR, the selection and/or usage of materials for the
construction of treatment plants shall require the understanding of its
classification and suitability of its application as divided in three basic
categories, such as: (1) combustible, (2) non-combustible, and (3) limited
combustibility, and shall comply with NFPA 220, Standards Types of
Building Construction, or applicable internationally accepted standards
for treatment plants.
B. Construction materials being considered for treatment plants shall be
selected based on the fire hazard and fire risk evaluation. The application
of these materials shall be based on the reduction or elimination of the
effects of fire or explosion by maintaining structural integrity, controlling
fire spread and smoke generation, preventing the release of toxic
products of combustion, and maintaining serviceability and operation of
the facility.
C. All buildings or unit processes that are considered critical to the integrity of
treatment plants shall be of non-combustible type and shall be
constructed in accordance with the National Building Code of the
Philippines. Fire safety measures in buildings as prescribed in this IRR and
other internationally accepted standards shall also be observed.
D. In specific cases for waste water treatment plants, notwithstanding the
applicability of some provisions to water treatment plants for similar
applications, the following prescriptions shall strictly be observed:
1. Sewers that handle or may handle flammable or hazardous materials
shall be of non-combustible materials.
2. Manholes, factory-built pumping stations, and other structures entered
by personnel that handle raw or partially treated waste water shall be
constructed only of non-combustible materials.
3. Non-combustible materials shall be used for air supply and exhaust
systems. Provided, in cases when combustible or limited combustible
materials are used to control corrosion, approved smoke and fire
dampers shall be installed. A separate smoke ventilation system shall
be preferred; however, smoke venting shall be allowed as integrated
into normal ventilation system using automatic or manually positioned
dampers and motor speed control.
4. No cellular or foamed plastic materials shall be used as interior finish.
Interior finishes shall provide a maximum degree of fire resistance, with
minimum flame spread rate and smoke generation for particular
application. This information shall be secured from material
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