Learn the fire protection requirements for spray booths as stated in NFPA 1, Fire Code, Chapter 43. Understand the operations, functions, and hazards of spray booths. Learn the fire protection system requirements and understand how to properly apply the fire code.

1. NFPA 1:43, Spraying, Dipping, andCoatingUsing Flammable or Combustible Materials

2. • Introduction
• NFPA 1:43
– Scope and Key Terms
– Location, Design, and Construction
– Ventilation
– Storage and Handling
– Fire Protection
– Operations, Maintenance, and Training
• Hands-On
– Spray Booth/System Walkthrough

3. ▪ FFPC/NFPA 1, Fire Code
▪ NFPA 1:43, Spraying, Dipping , and Coating Using
Flammable and Combustible Materials
▪ NFPA 33, Standard for Spray Application Using
Flammable or Combustible Materials

4. ✓ Compressed air atomization
✓ Airless or hydraulic atomization
✓ Electrostatic application methods
✓ Fluidized bed application methods
✓ Electrostatic fluidized bed application methods
✓ “Other” acceptable application means
Spray application of flammable liquids, combustible liquids, or combustible powders
by any of the following methods…

5. ✓ Water-borne
✓ Water-based
✓ Water-reducible
…materials that contain flammable or combustible liquids or that
produce combustible deposits or residues.
Spray application of flammable liquids, combustible liquids, or combustible powders
by any of the following methods…

6. Ø Spray operations using less than 1 L in any 8-hour period
Ø Spray applications performed outdoors
Ø Portable spraying equipment
Ø Aerosol products up to 1 L not used repeatedly in same location
Ø Spray application of noncombustible materials
Ø The hazards of toxicity or industrial health and hygiene

7. Combustible Liquid
Flash point at or above 100˚F
Flammable Liquid
Flash point below 100˚F

8. Combustible Dust
A finely divided combustible particulate solid that presents a flash
fire hazard or explosion hazard when suspended in air or the
process-specific oxidizing medium over a range of concentrations

9. Spray Area
Any area in which dangerous quantities of flammable or
combustible vapors, mists, residues, dusts or deposits are present
due to the operation of spray processes
Spray Booth
Power-ventilated enclosure for spray application operation or
process that confines and limits escape of material being sprayed
Spray Room
A power ventilated full enclosed room used exclusively for open
spraying of flammable or combustible materials

11. Fluidized Bed
A chamber holding powder coating
material that is aerated from below to
form an air-supported, expanded cloud
of the powder
Electrostatic Fluidized Bed
Powder is electrically charged with a
charge opposite to that of the object
being coated

12. Not permitted in...
• Assembly, educational, institutional, residential
Exception…
• Separated by 2-hour rated construction and protected
by fire sprinkler system

13. Construction
Non-combustible, limited combustible materials
Smooth interior surface

14. Spray Rooms
Separated by 1-hour fire rated construction
Means of egress per NFPA 101
Conveyor openings as small as practical

15. Spray Booths
Separated from other operations by 3’, or 1-hour fire
rated construction
All parts readily accessible for cleaning
Maintain clear space of 3’ on all sides and above
Vehicles movement prohibited until spray ops cease and
room is properly ventilated

16. ▪ Light Fixtures and
Panels
▪ Heat treated, laminated, wired,
hammered wired
▪ Sealed to confine vapors
▪ Separated from fixture (temps
NTE 200˚F)

17. ▪ NFPA 70, NEC
▪ Class, Division, Zone
▪ Flammability/combustibility of
atmosphere
▪ Identifies location, proximity, isolation
from electrical hazards
▪ Protective measures vary based on
hazard class

18. • Classes
▪ Class I – flammable gas or vapors are or may be present
▪ Class II – presence of combustibledust
▪ Divisions
▪ Division 1 – vapors are always present or likely to be
▪ Division 2 – vapors are not normally present
▪ Zones
▪ Zone 0 – ignitable atmosphere is alwayspresent
▪ Zone 1 – ignitable atmosphere is likely to be present
▪ Zone 2 – ignitable atmosphere is not normally present
▪ Zone 20 – ignitable concentration of combustible dust is always present
▪ Zone 21 – ignitable concentration of combustible dust is likelypresent
▪ Zone 22 – ignitable concentration of combustible dust is not normally present

19. • Classes
▪ Class I – flammable gas or vapors are or may be present
▪ Class II – presence of combustibledust
▪ Divisions
▪ Division 1 – vapors are always present or likely to be
▪ Division 2 – vapors are not normally present
▪ Zones
▪ Zone 0 – ignitable atmosphere is alwayspresent
▪ Zone 1 – ignitable atmosphere is likely to be present
▪ Zone 2 – ignitable atmosphere is not normally present
▪ Zone 20 – ignitable concentration of combustible dust is always present
▪ Zone 21 – ignitable concentration of combustible dust is likelypresent
▪ Zone 22 – ignitable concentration of combustible dust is not normally present

20. hazard classification for
unenclosed spray areas

21. hazard classification for areas adjacent
to an open-face or open-front spray
booth/room

22. hazard classification areas
adjacent to an enclosed
spray booth/room

24. Portable Light Fixtures
Not permitted unless….
“Electrical wiring and utilization equipment that is located in the
spray are and is not subject to deposits of combustible residues shall
be listed for such exposure and shall be suitable for Class I, Division 1;
Class I, Zone 1; Class II, Division 1; or Zone 21 locations.”

25. Flexible Power Cords:
▪ Approved for extra-hard usage
▪ Equipped with grounding conductor
▪ Properly connected to terminals or conductors
▪ Supported by mechanical clamp, prevents strain and
easy replacement
▪ Explosion-proof or dust-tight seals provided at junction
boxes, fittings, enclosures
▪ Listed for composites of combustible residue

26. NFPA 91
Standard for Exhaust Systems for Air Conveying of
Vapors, Gases, Mists, and Noncombustible Particulate
Solids

28. Ventilation to be operational during spray operations
Make-up air adequate to compensate for exhaust air
Duct to outside of building
Follow most direct route to discharge
Not to penetrate fire walls
Directed away from fresh air intakes
Minimum 6’ from exterior wall or roof
Discharge away from combustible construction
Doors or panels available for inspection and maintenance

29. NFPA 30
Flammable and Combustible Liquids Code
For storage, handling, mixing of flammable and combustible
liquids

30. MAQ
Maximum Allowable Quantity
Control Area
An area in which hazardous materials are allowed to be stored,
used, dispensed, or handled in quantities not exceeding the
MAQ

32. Mixing Rooms
▪ Shall not exceed 150 sq.ft.
▪ Contain spill of rooms contents
▪ Continuously operating mechanical ventilation system
▪ Electrical area classification same as enclosed spray booth
▪ Automatic fire protection system
▪ Portable fire extinguishers

33. Shall be protected with an approved
automatic fire protection system.

34. ▪ Automatic water sprinkler system (NFPA 13)
▪ Automatic foam water sprinkler system (NFPA 16)
▪ Carbon dioxide extinguishing system (NFPA 12)
▪ Dry chemical extinguishing system (NFPA 17)
▪ Gaseous agent extinguishing system (NFPA 2001)

35. Automatic water sprinkler system design considerations…
▪ Wet, dry, pre-action, deluge
▪ Extra Hazard Group II (NFPA 13:5.4.2)
▪ Sufficient to supply all heads likely to open without
depleting supply for firefighting operations

36. Extra Hazard Grp. II -
“…moderate to substantial amounts of
flammable or combustible liquids or
occupancies where shielding of
combustibles is extensive.”

37. Extra Hazard Grp. II -
“…moderate to substantial amounts of
flammable or combustible liquids or
occupancies where shielding of
combustibles is extensive.”

38. System activation sequence –
Activatelocalalarm
Transmit alarm signal
Shut down materialdelivery system
Shut down spray applicationoperations
Stop all conveyors

39. ▪ Controlled by separate
valve
▪ Heads protected from
overspray residue
▪ Covered by cellophane or
thin paper bags
▪ Coated heads to be
replaced

40. NFPA 10
Standard for Portable Fire Extinguishers

41. Other requirements:
For automated powder application and liquid electrostatic
spray application, flame detection required.

42. Responsibility of the users
General housekeeping practices
Free of excess residue
Replacement of filters
Daily debris clean-up
Contaminated clothing in metal locker

43. Training of Operators:
Safety and health hazards
Operational, maintenance, emergency procedures
Constant awareness
Safe handling, storage, use of materials
Use, maintenance, storage of PPE and equipment

44. NFPA 1:43, Spraying, Dipping, andCoatingUsing Flammable or Combustible Materials