Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 366

10. Automobile refinishing spray booths or enclosures, otherwise installed
and maintained in conformity with this Division, may alternately be
used for drying with portable electrically infrared drying apparatus
when conforming with the following:
a. The procedures shall be restricted to low-volume, occasional spray
application;
b. The interior (especially floors) of spray enclosures shall be kept free
of overspray deposits;
c. During spray operations, the drying apparatus and electrical
connections and wiring thereto shall not be located within the
spray enclosure nor in any other location where spray residue may
be deposited;
d. Spraying apparatus, drying apparatus and ventilating systems of
the spray enclosure shall be equipped with suitable interlocks so
arranged that:
i. The spraying apparatus cannot be operated while the drying
apparatus is inside the spray enclosure.
ii. The spray enclosure will be purged of spray vapors for a period
of not less than three minutes (3 min) before drying apparatus
can be energized.
iii. The ventilating system will maintain a safe atmosphere within
the enclosure during the drying process and the drying
apparatus will automatically shut off in the event of failure of
the ventilating system.
C. Protection and Maintenance
1. The filters in a spray booth shall be located in such a manner as not to
reduce the effective booth enclosure of the articles being sprayed.
2. Space within spray booths on the downstream and upstream sides of
filters shall be protected with approved automatic sprinklers and/or fire
control and extinguishing systems.
3. Filters or filter rolls shall not be used when applying a spray material
known to be highly susceptible to spontaneous heating and ignition.
4. Clean filters or filter rolls shall be non-combustible or of approved type
having combustibility not in excess of Class 2 filters as listed by
Underwriters Laboratories, Inc. Filters. Filter rolls shall not be alternately
used for different types of coating materials, where the combination of
materials may be susceptible to spontaneous ignition.
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