Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 374

10. Electrical wiring and equipment that is located in the process area
and is subject to deposits of combustible residues shall be of
explosion-proof type approved for use in such hazardous locations in
accordance with the Philippine Electrical Code.
11. Unless specifically approved for locations containing both deposits of
readily ignitable residue and explosive vapors, there shall be no
electrical equipment in the vicinity of dip tanks or associated drain
boards or drying operations which are subject to splashing or dripping
or dip tank liquids, except wiring in rigid conduits or in threaded boxes
or fittings containing no taps, splices or terminal connections and
except as hereinafter specifically permitted relating to electrostatic
apparatus.
12. Open flames or spark producing equipment, which is not separated
by tight partitions, shall not be located within six meters (6 m) in any
floor space outside the process area. Drying and fusion apparatus
may be installed adjacent to process areas subject to applicable
provision of this rule.
13. In order to prevent sparks from the accumulation of static electricity,
all persons and all electrically conductive objects, including any
metal parts of the process equipment or apparatus, containers of
material, exhaust ducts, and piping systems that convey flammable
or combustible liquids, shall be electrically grounded.
14. Hardening and tempering tanks shall conform to all applicable
provisions of this Section and the following:
a. Tanks shall be located as far as practicable from furnaces and
shall not be located on or near combustible floors.
b. Tanks shall be provided with a non-combustible hood and vent
or other equally effective means, venting to the outside of the
building to serve as a vent in case of fire. All such vent ducts shall
be treated as flues and be kept away from combustible roots or
materials.
c. Tanks shall be equipped with a mechanical high temperature
limit switch arranged to sound the alarm when the temperature
of the quenching medium reaches ten degrees (10°C) Celsius
below flash point.
d. Hardening and tempering tanks of over one thousand eight
hundred ninety five liters (1,895 ℓ) capacity or two and
thirty-two hundredths square meters (2.32 m 2 ) surface area shall
be protected as specified in section.
e. Air under pressure shall not be used to fill or to agitate oil in tanks,
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