Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 380

6. All electrically conductive objects within the charging influence of the
electrodes shall be adequately grounded. The powder coating
equipment shall carry a prominent, permanently installed warning sign
regarding the necessity for grounding these objects.
7. Objects being coated shall be maintained in contact with the
conveyor or other support in order to insure proper grounding.
Hangers shall be regularly cleaned to ensure effective contact, and
areas of contact shall be sharp point or knife's edges where possible.
8. Electrical equipment shall be so interlocked with the ventilation system,
such that the equipment cannot be operated unless the ventilation
fans are in operation.
B. Operation
1. Powder coating operations shall be conducted in:
a. Completely
enclosed
rooms
made
of
non-combustible
materials/construction with smooth surfaces designed to prevent
accumulation of powder and to facilitate cleaning; or
b. Enclosed powder
ventilated, or
coating
facilities
which
are
adequately
c. Adequately ventilated spray booths meeting the requirements of
this IRR.
2. The application of powders by means of non-electrostatic fluidized
bed or powder spray gun normally requires the part to be preheated.
Preheating is also sometimes used with electrostatic equipment. Care
must be taken to insure that the temperature of the part to be coated
does not exceed the ignition temperature of the powder being used.
3. Precaution shall be taken to minimize the possibility of ignition by static
electrical sparks through static grounding, where possible, of powder
transport, application and recovery equipment.
4. All areas shall be free from accumulation of powder coating dusts,
particularly such horizontal surfaces as ledges, beams, pipes, hoods,
booths and floors.
5. Surfaces shall be cleaned in such manner as to avoid scattering dust
to other places or creating dust clouds. Vacuum sweeping equipment,
when used, shall be of approved type for use in hazardous locations.
6. Care shall be exercised to prevent iron or spark-producing metals from
being introduced into the powder being applied. Magnetic and filter
type separators are recommended.
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