HomeMy WebLinkAboutConditions of PermitcoN DITIONS OF PERMIT
BLCO-03 -25-9141
WESTERN SLOPE CUSTOM PAINTING
ADDITION OF A PAINTBOOTH IN AN EXISTING BUILDING
28485 HIGHWAY 6&24 RIFLE, CO
BIG R COMMERIAL PARK
1) THE APPROVED PLANS ARE TO BE ON-SlrE FOR INSPECTIONS.
2) SANTTARY FACILITIES ARE REOUIRED TO BE PROVIDED FOR WORKERS.
3) A LIST OF REOUIRED INSPECTIONS WILL BE ATTACHED TO THE PLANS. THE STATE
IS TO PERMIT AND APPROVE THE ELECTRICAL WORK.
RMITS
4) ELECTRICAL CODE COMPLIANCE WILL BE DETERMINED BASED ON FIELD
INSPECTIONS PERFORMED BY THE STATE ELECTRICAL INSPECTOR, (303) 869-3458
PLEASE HAVE THE INSPECTOR SIGN THE BUILDING CARD OR PROVIDE WRITTEN
DOCUMENTATION OF THE INSPECTIONS. A LICENSED ELECTRICIAN
5) TNSTALLATTON tS TO COMply W|TH THE MANUFACTURER',S INSTALLATION
INSTRUCTIONS AND ENGINEERED STAMPED DRAWINGS.
6) FIRE SUPPRESSION WITHIN THE PAINT BOOTH lS TO BE REVIEWED AND
INSPECTED BY THE LOCAL FIRE DISTRICT. COIOTAdO RiVCr FiTE RESCUE
970-625-1243
sEcTloN 2401
GENERAL
2401.t Scope. This chapter shall apply to locations or areas
where any of the following activities are conducted:
1. The application of flammable finishes to articles or
materials by means of spray apparatus.
2. The application of flammable finishes by dipping or
imrnersing articles or materials into the contents of
tanks, vats or containers of flammable or combustible
liquids for coating, finishing, treatment or similar pro-
cesses,
3. The application of flammable finishes by applying
combustible powders to articles or materials utilizing
powder spray guns, electrostatic powder spray guns,
fluidized beds or electrostatic fluidized beds.
4, Floor surfacing or finishing operations using Class I or
II liquids in areas exceeding 350 square feet (32.5 m2).
5, The application of flammable finishes consisting of
dual-component coatings or Class I or II liquids when
applied by brush or roller in quantities exceeding 1 gal-
lon (4 L).
2401,2 Nonapplicability. This chapter shall not apply to
spray finishing utilizing flammable or combustible liquids
that do not sustain combustion, including:
1. Liquids that have no fire point when tested in accor-
dance with ASTM D 92,
GHAPTER 24
FLAMMABLE FINISHES
$;,
SPRAY BOOTH.
SPRAY ROOM.
SPRAYING SPACE.
sEcTtoN 2403
PROTECTION OF OPERATIONS
2403.t General. Operations covered by this chapter shall be
protected as required by Sections 2403.2 through 2483.4.4,
24A3.2 Sources of ignition. Protection against sources of
ignition shall be provided in accordance with Sections
2443.2.1 through 2403.2.8.
2403.2,1 Electrical wiring and equipment, Electrical
wiring and equipment shall comply rvith this chapter and
NFPA 70.
2403,2.1.1 Flammable yapor areas. Electrical wiring
and equipment in flammable vapor areas shall be of an
explosionproof type approved for use in such hazard-
ous locations. Such areas shall be considered to be
Class I, Division I or Class II, Division I hazardous
locations in accordance with NFPA 70.
2403,2,1,2 Areas subject to deposits of residues.
Electrical equipment, flammable vapor areas or drying
operations that are subject to splashing or dripping of
liquids shall be specifically approved for locations con-
taining deposits of readily ignitable residue and explo-
sive vapors.
Exceptions:
1. This provision shall not apply to wiring in
rigid conduit, threaded boxes or fittings not
containing taps, splices or terminal connec-
tions.
2. This provision shail not apply to electrostatic
equipment allowed by Section 2407.
In resin application areas, electrical wiring and
equipment that is subject to deposits of combustible
rssidues shall be listed for such exposure and shall be
installed as required for hazardous (classified) loca-
tions. Electrical wiring and equipment not subject to
deposits of combustible residues shall be installed as
required for ordinary hazard locations.
2403.2,1.3 Areas adjacent to spray booths. Electrical
wiring and equipment located outside of, but within 5
feet (1524 mm) horizontally and 3 feet (914 mm) verti-
cally of openings in a spray booth or a spray room,
shall be approved for Class I, Division 2 or Class II,
Division 2 hazardous locations, whichever is applica-
ble.
2403.2,1.4 Areas subject to overspray deposits. Elec-
trical equipment in flammable vapor areas located such
2. Liquids with a flashpoint greater than 95"F (35"C) in a
water-miscible solution or dispersion with a water and
inert {noncombustible) solids content of more than 80
percenl by weight.
i,Hll.sPennlts. Permits shalt be reguired as set furth in Sec-. Ulh
tions 105.6 and 105.7. , rt. Ol \h't ,tr.pf
V/lU'n'" 11v11-
SECTION 2402 a).!-l -'
DEFINITIONS T
U02.1Definitions. The following tern$ are defined in Chap-
ter 2:
DETEARING.
DIP TANK.
ELECTROSTATIC FLUIDIZED BED.
FLAMMABLE FINISHES.
FLAMMABLE VAPOR AREA.
FLUIDIZED BED.
LIMITED SPRAYING SPACE.
RESIN APPLICATION AREA.
ROLL COATING,
2015 INTERNATIONAL FIRE CODE@ 245
FLAMMABTE FINISHES
that deposits of combustible residues could readily
accumulate thereon shall be specifically approved f.or
locations containing deposits of readily ignitable resi-
due and explosive vapors in accordance with NFPA 70.
f,xceptions:
1. Wiriug in rigitl uuuduit.
2. Boxes or fittings not containing taps, splices
or terminal connections.
3. Equipment allowed by Sections 2404 and
24A7 and Chapter 30,
2403.2.2 Open flames and sparks. Open flames and
spark-producing devices shall not be located in flammable
vapor sreas and shall not be located within 20 feet (6096
nm) of such areas unless separated by a permanent parti-
tion.
Exception: Drying and baking apparatus complying
with Section 24A4.6.L2,
2403.2.3 Hot surfaces. Heated surfaces having a tempera-
turc sufficicnt to ignite vapors shall not be located in flam-
mable vapor areas. Space-heating appliances, steam pipes
or hot surfaces in a flammable vapor area shall be located
such that they are not subject to accumulation of deposits
of combustible residues.
Exception: Drying apparatus complying with Section
2404.6.1.2.
2403.2,4 Equipment enclosures. Equipment or apparatus
that is capable of producing sparks or particles of hot
metal that would fall into a flammable vapor area shall be
totally enclosed.
2403,2,5 Grounding. Metal parts of spray booths, exhaust
ducts and piping systems conveying Class I or II liquids
shall be electrically grounded in accordance with NFPA
70. Metallic parts located in resin application areas,
including but not limited to exhaust ducts, ventilation fans,
spray application equipment, workpieces and piping, shall
be electrically grounded.
2403.2,6 Smoking prohibited. Smoking shall be prohib-
ited in flammable vapor areas and hazardous materials
storage rooms associated with flammable finish processes,
"No Smoking" signs complyiug with Section 310 shall be
conspicuously posted in such areas.
U03.2.7 Welding warning signs. Welding, cutting and
similar spark-producing opcrations shall not be conducted
in or adjacent to flammable vapor areas or dipping or coat-
ing operntions unleus precautionn have been taken to pro-
vidc safety. Conspicuous signs with the following waming
shall be posted in the vicinity of flammable vapor areas,
dipping operations and paint storage rooms:
NO WELDING
.I'HT, USE UT. WFLDING C)R (]I]TTING
EQUIPMENT IN OR NEAR THIS AREA
IS DANGEROUS BECAUSE OF FIRE
AND EXPLOSTON HAZ,ARDS. WELDING
AND CUTTING SHALL BE DONE ONLY
UNDER THE SUPERVISION OF TTIE
PERSONINCHARGE.
2403.2.8 Powered industrial trucks. Powered industrial
trucks used in electrically classified areas shall be listed
for such use.
2403.3 Storage, use and handling of flammable and com-
bustibte liquids. The storage, use and handling of ilammable
and combustible liEricls shall be in accordance with this se*-
tion and Chapter 57.
2403.3.1 Use. Contairters supplying spray nozzles shall be
of a closed type or provided with metal covers that are
kept closed. Containers not resting on floors shall be on
noncombustible supports or suspended by wire cables.
Containers supplying spray nozzles by gravity flow shall
not exceed 10 gallons (37 .9 L) in capacity.
2403.3.2 Valves. Containers and piping to which a hose or
flexible connection is attached shall be provided with a
shutoff valve at the connection. Such valves shall be kept
shut when hoses are not in use.
2403.3.3 Pumped liquid supplies. Where flammable or
combustible liquids are supplied to spray nozzles by posi-
tive displacement pumps, pump discharge lines shall be
provided with an approved relief valve riischarging to
pump suction or a safe detached location.
2403,3.4 Liquid transfer. Where a flammable mixture is
transferred from one portable container to another, a bond
shall be provided between the two containers. Not less
than one container shall be grounded. Piping systems for
Class I and II tiquids shall be permanently grounded.
2403,3.5 Class I tiquids as solvents. Class I liquids used
as solvents shall be used in spray gun and equipment
cleaning machines that have been listed and approved for
such purpose or shall be used in spray booths or spray
rooms in accordance with Sections 2403.3.5,1 and
2443s.s.2.
2403.3.5.1 Listed devices. Cleaning machines for
spray guns and equipment shall not be located in areas
open to the public and shall he separated from ignition
sources in accordance with their listings or by a dis-
tance of 3 feet (914 mm), whichever is greater. The
quantity of solvent used in a machine shall not exceed
ihe dcsign capacity of the machine.
2403,3,5,2 Within spray booths and spray rooms.
When solvents are used for cleaning spray nozzles and
auxiliary equipment within spray booths and spray
rnnmc flra rranfiletinc pnrrinmenf chell he nnerlfcd rllrr-rvvrrrur "r-.---- *"-
iug ulcalilg.
2403.3.6 Class II and III liquids. Solvents used outside
of spray booths, spray rooms or listed and approved spray
gun and equipment cleaning machines shall be restricted
to Class II and III liquids.
2403,4 Operations and maintenance. Flammable vapor
areas, exhaust fan blades and exhaust ducts shall be kept free
from the accumulation of deposits of combustible residues'
Where excessive residue accumulates in such areas, spraying
operations shall be discontinued until conditions are cor-
rected.
248 2015 INTERNATIONAL FIRE CODEO
2403.4,1 Tools. Scrapers, spuds and other tools used for
cleaning purposes shall be constructed of nonsparking
materials.
2403.4,2 Residue. Residues removed during cleaning and
debris contaminated with residue shall be immediately
removed from the premises and properly disposed.
2403.4.3 Waste cans. Approved metal waste cans
equipped with self-closing lids shall be provided wherever
rags or waste are impregnated with finishing material.
Such rags and waste shall be deposited therein immedi
ately after being utilized. The contents of waste cans shall
be properly disposed of not less than once daily and at the
end of each shift.
A03,4.4 Solvent recycling. Solvent distillation equip-
ment used to recycle and clean dirty solvents shall comply
with Section 5105.4.
sEcToN 2404
SPBAY FINISHING
UOA.I General. The application of flammable or combusti-
ble liquids by means of spray apparatus in continuous or
intermittent processes shall be in accordance with the require-
ments of Sections 2403 and2404.2 through 2404.9.4.
2444.2 Location of spray-finishing operations. Spray-fin-
ishing operations conducted in buildings used for Group A,
E, I or R occupancies shall be located in a spray room pro-
tected with an approved automatic sprinkler system installed
in accordance with Section 903.3.1.1 and separated vertically
and horizontally from other areas in accordance with the
International B uildin g C ode. ln other occupancies, spray-fin-
ishing operations shall be conducted in a spray room, spray
booth or spraying space approved for such use.
Exceptions:
1. Automobile undercoating spray operations and
spray-on automotive lining operations conducted in
areas with approved natural or mechanical ventila-
tion shall be exempt from the provisions of Section
2404 when approved and where utilizing Class IIIA
or IIIB combustible liquids.
2. In buildings other than Group A, E, I or R occupan-
cies, approved limited spraying space in accordance
with Section 2404.9.
3. Resin application areas used for manufacturing of
reinforced plastics complying with Section 2409
shall not be required to be located in a spray room,
spray booth or spraying space.
2404.3 Design and construction. Design and construction of
spray rooms, spray booths and spray spaces shall be in accor-
dance with Sections 2404.3.1 through 2404.3.3.I.
2404.3.1Spray rooms. Spray rooms shall be constructed
and designed in accordance with Section 2404.3.L1 and
the International Building Code, and shall comply with
Sections 2404.4 through 2404.8.
2404.3.1,1 Floor. Combustible floor construction in
spray rooms shall be covered by approved, noncombus-
FLAMMABLE FINISHES
tible, nonsparking material, except where combustible
coverings, including but not limited to thin paper or
plastic and strippable coatings, are utilized over non-
combustible materials to facilitate cleaning operations
in spray rooms.
2404,3.2 Spray booths. The design and construction of
spray booths shall be in accordance with Sections
2404.3.2.1 through 24A43.2.6, Sections 2404.4 through
2404.8 and NFPA 33.
2404.3,2.1 Construction. Spray booths shall be con-
structed of approved noncombustible materials. Alumi-
num shall not be used. Where walls or ceiling
assemblies are constructed of sheet metal, single-skin
assemblies shall be no thinner than 0.0478 inch (18
gage) (1.2 mm) and each sheet of double-skin assem-
blies shall be no thinner than 0.0359 inch (20 gage) (0.9
mm). Structural sections of spray booths are allowed to
be sealed with latex-based or similar caulks and seal-
ants.
2404.3,2.2 Surfaces. The interior surfaces of spray
booths shall be smooth; shall be constructed so as to
permit the free passage of exhaust air from all parts of
the interior, and to facilitate washing and cleaning; and
shall be designed to confine residues within the booth,
Aluminum shall not be used.
2404.3,2.3 Floor. Combustible floor construction in
spray booths shall be covered by approved, noncom-
bustible, nonsparking material, except where combusti-
ble coverings, including but not limited to thin paper or
plastic and strippable coatings, are utilized over non-
combustible materials to facilitate cleaning operations
in spray booths.
2404.3.2.4 Means of egress. Means of egress shall be
provided in accordance with Chapter 10.
Exception: Mesns of egress doors from premanu-
factured spray booths shall be not less than 30
inches (762 mm) in width by 80 inches (2032 mm)
in height,
2404.3,2.5 Clear space. Spray booths shall be installed
so that all parts of the booth are readily accessible for
cleaning. A clear space of not less than 3 feet (914 mm)
shall be maintained on all sides of the spray booth. This
clear space shall be kept free of any storage or combus-
tible construction.
Exceptions:
L This requirement shall not prohibit locating a
spray booth closer than 3 feet (9L4 mm) to or
directly against an interior parlition, wall or
floor/ceiling assembly that has a fire-resis-
tance rating of not less than t hour, provided
the spray booth can be adequately maintained
and cleaned.
2, This requirement shall not prohibit locating a
spray booth closer than 3 feet (914 mm) to an
exterior wall or a roof assembly, provided the
wall or roof is constructed of noncombustible
201 5 INTERNATIONAL FIRE CODE@ 247
FLAMMABLE FINISHES
material and the spray booth can be ade-
quately maintained and cleaned.
2404.3.2.6 Size. Thc aggrcgatc arca of spray booths in
a huilding shall not exceed fhe le.sser of l0 percent of
the area of any tloor of a building or the basic area
allowed for a Group H-2 occupancy without area
increases, as set forth in the Intemational Building
Code. The area of an individual spray booth in a build-
ing shall not exceed the lesser of the aggregate size
limit or 1,500 square feet (139 m2).
Exception: One individual booth not exceeding 500
square feet (46 mz).
U04.3.3 Spraying spaces. Spraying spaces shall be
designed and constructed in accordance with the Interna-
tional Building Code, and Section 244433.1and Sections
2404.4 through 2404.8 of this code.
2404.3.3,1 Floor. Combustible floor construction in
spraylng spaces shall be covered by approved, iloncom-
bustible, nonsparking material, except where combusti-
ble coverings, such as thin paper or plastic and
strippable coatings, are utilized over noncombustible
materials to facilitate cleaning operations in spraying
spaces.
2404.4 Fire protection. Spray booths and spray rooms shall
be protected by an approved automatic fire-extinguishing
system complying with Chapter 9. Protection shall also
extend to exhaust plenums, exhaust ducts and both sides of
dry filters when such filters are used.
?/i04.4,1 Fire extinguishers. Portable fire extinguishers
complying with Sectlon 906 shall be provlded for spraying
areas in accordance with the requirements for an extra
(high) hazard occupancy.
24A4.5 Housekeeping, maintenance and storage of haz-
ardous materials. Housekeeping, maintenance, storage and
use of hazardous materials shall be in accordance with Sec-
tions 2403.3, 24A3.4, 2404.5,1 and 2404.5.2.
2404.5.1 Different coatings. Spray booths, spray rooms
and spraying spaces shall not be altemately utilized for
different types of coating materials where the cornbination
of materials is conducive to spontaneous ignition, unless
all deposits uf one rnatetial are retuoved from the booth,
room or space and exhaust ducts prior to spraying with a
different material,
2404.5.2 Protection of sprinklers. Automatic sprinklers
installed in flammable vapor areas shall be protected from
the accumulation of residue from spraying operations in an
approvedmanner. Bags used as a protective covering shall
be 0.003-inch{hick (0.076 mm) polyethylene or cello-
phane or shall be thin paper. Automatic sprinklers contam-
inated by overspray particlcs shall be replaced with new
automatic sprinklers.
2404.6 Sources of ignition. Control of sources of ignition
shall be in accordance with Section 2403.2 and Sections
2404.6.1 through 2404.6.2.4.
2404.6.L Drying operations. Spray booths and spray
rooms shall not be alternately used for the purpose of dry-
ing by arrangements or methods that could cause an
increase in the surface temperature of the spray booth or
spray room except in accordance with Sections 2444.6.1.1
and2404.6.1.2. Except as specifically provided in this sec-
tion, drying or baking units utilizing a heating system hav-
ing open flames or that are capable of producing sparks
shall not be installed in a flammable vapor areas.
2404.6,1,1 Spraying procedure. The spraying proce-
dure shall use low-volume spray application.
24A4.6.1.2 Drying apparatus. Fixed drying apparatus
shall comply with this chapter and the applicable provi-
sions of Chapter 30. When recirculation ventilation is
provided in accordance with Section 2404.7.2, the heat-
ing system shall not be within the recirculation air path.
2404.6.1.2.1 Interlocks. The spraying apparatus,
drying apparatus and ventilating system for the
spray booth or spray room shall be equipped with
intodocke arranged to accomplish all of the follorv-
ing:
1. Prevent operation of the spraying apparatus
while drying operations are in progress.
2. Where the drying apparatus is located in the
spray booth or spray room, prevent operation
of the drying apparatus until a timed purge of
spray vapors frorn the spray booth or spray
room is complete. This purge time shall be
based upon completing at least four air
changes of spray booth or spray room volume
or for a period of not less than 3 minutes,
whir:hever is greatcr.
3. Have the ventilating system maintain a safe
atmosphere within the spray booth or spray
room during the drying process and automati-
cally shut off drying apparatus in the event of
a failure of the ventilating system.
4. Shut off the drying apparatus automatically if
the air temperature within the booth exceeds
200"F (93'C),
2404.6.1.2.2 Portable infrared apparatus. Where
a portable infrared drying apparatus is used, electri-
cal wiring and portable infrared drying equipment
shall comply with NFPA 70. Electrical equipment
located within 18 inches (457 mm) of floor level
shall be approved for Class I, Division 2 hazardous
locations. Metallic parts of drying apparatus shall be
electrically bonded and grounded. During spraying
operations, portable drying apparatus and electrical
connections and wiring thereto shall not be located
within spray booths, spray rooms or other areas
where spray residue would be deposited thereon.
2404.6.2 lllumination. Where spraying spaces, spray
rooms or spray booths are illuminated through glass panels
or other transparent materials, only fixed luminaires shall
be utilized as a source of illumination.
2404.6.2.1 Glass panels. Panels for luminaires or for
observation shall be of heat-treated glass, wired glass or
248 2015 INTERNATIONAL FIRE CODEO
hammered wire glass and shall be sealed to confine
vapors, mists, residues, dusts and deposits to the flam-
mable vapor area. Panels for luminaires shall be sepa-
rated from the luminaire to prevent the surface
temperature of the panel from exceeding 200'F (93"C).
AA4.6.2.2 Exterior luminaires. Luminaires attached
to the walls or ceilings of a flammable vapor area, but
outside of any classified area and separated from the
flammable vapor areas by vapor-tight glass panels,
shall be suitable for use in ordinary hazatd locations.
Such luminaires shall be serviced from outside the
flammable vapor areas.
2404.6.2.3Integral luminaires. Luminaires that are an
integral part of the walls or ceiling of a flammable
vapor area are allowed to be separated from the flam-
mable vapor area by glass panels that are an integral
part of the luminaire. Such luminaires shall be listedfor
use in Class I, Division 2 or Class II, Division 2laca-
tions, whichever is applicable, and also shall be suitable
for accumulations of deposits of combustible residues.
Such luminaires are allowed to be serviced from inside
the flammable vapor area.
2404.6,2.4 Portable electric lamps. Portable electric
lamps shall not be used in flammable vapor areas dur-
ing spraying operations. Portable electric lamps used
during cleaning or repairing operations shall be of a
type approved for hazardaus locations.
2404.7 Ventilation. Mechanical ventilation of flammable
vapor areas shall be provided in accordance with Section
502.7 of the International Mechanical Code.
2404.7,1Operation. Mechanical ventilation shall be kept
in operation at all times while spraying operations are
being conducted and for a sufficient time thereafter to
allow vapors frorn drying coated articles and finishing
material residue to be exhausted. Spraying equipment
shall be interlocked with the ventilation of the flammable
vapor areas such that spraying operations cannot be con-
ducted unless the ventilation system is in operation.
2404.7,2 Recirculation. Air exhausted from spraying
operations shall not be recirculated.
Exceptions:
1. Air exhausted from spraying operations is
allowed to be recirculated as makeup air for
unmanned spray operations, provided that all of
the following conditions exist:
L l. The solid particulate has been removed.
l.Z.The vapor concentration is less lhan 25
percent of the LFL.
1,3. Approved equipment is used to monitor
the vapor concentration.
1.4. When the vapor concentration exceeds 25
percent of the LFL, both of the following
shall occur:
a. An alarm shall sound.
FLAMMABLE FINISHES
b. Spray operations shall automatically
shut down.
1.5. In the event of shutdown of the vapor
concentration monitor, 100 percent of the
air volume specified in Section 510 of the
International Mechanical Code is afio-
matically exhausted.
2. Air exhausted from spraying operations is
allowed to be recirculated as makeup air to
manned spraying operations where all of the con-
ditions provided in Exception 1 are included in
the installation and documents have been pre-
pared to show that the installation does not pose a
life safety hazard to personnel inside the spray
. booth, spraying space or spmy roon.
,$qlaol,l,l Air velocity. Tho venrilation systenr shall bc
.\Y'+ designed, instolled ancl maintained so that the llamnrablelV' contaminants are diluted in noncontaminated air to main-
tain concentrations in the exhaust airflow below 25 ger'
cent of the contaminant's lower flammable limit (LFL), In
addition, the spray booth shall be provided with mechani-
cal ventilation so that the average air velocity through
openings is in accordance with Sections 2404.7.3.1 and
'24A4.1.3.2.
2404.7.3,L Open-face or open-front spray booth. For
spray application operations conducted in an open-face
or open-front spray booth, the ventilation system shall
be designed, installed and maintained so that the aver-
age air velocity into the spray booth through all open-
ings is not less than 100 feet per minute (0.51 m/s).
Exception: For fixed or automated electrostatic
spray application equipment, the average air veloc-
ity into the spray booth through all openings shall be
not less than 50 feet per minute (0.25 m/s).
24A4,7,3.2 Enclosed spray booth or spray room with
openings for product conveyance. For spray applica-
tion operations conducted in an enclosed spray booth or
spray room with openings for product conveyance, the
ventilation system shall be designed, installed and
maintained so that the average air velocity into the
spray booth through openings is not less than 100 feet
per minute (0,51 m/s).
Exceptions:
1. For fixed or automated electrostatic spray
application equipment, the average air veloc-
ity into the spray booth through all openings
shall be not less than 50 feet per minute (0.25
m/s).
2. Where methods are used to reduce cross drafts
that can draw vapors and overspray through
openings from the spray booth or spray room,
the average air velocity into the spray booth or
spray room shall be that necessary to capture
and confine vapors and overspray to the spray
booth or spray room.
201 5 INTERNATIONAL FIRE CODE@ 249
FLAMMABLE FINISHES
24M.7.4 Ventilation obstruction. Articles being sprayed
shall be positioned in a manner that does not obstruct col-
lection of overspray.
24A4,1.E.1Supports. Supports and holders for filters
shall be constructed of noncombustible materials.
2404.7.8,2 Attachment. Overspray collection filters
room shall have an independent exhaust duct system dis-
charging to the oufside..
Exceptions:
1 Multiple spray booths having a combined frontal
area of 18 square feet {1.67 m') or less are
allowed to have a coillmon exhaust when identi-
cal spray finishing material is used in each booth.
If more than one fan serves one booth, fans shall
be interconnected such that all fans will operate
simultaneously.
2. Where treatment of exhaust is necessary for air
pollution control or for energy conservation,
ducts shall be allowed to be manifolded if all of
the frrllowing conditions are mer:
2.1. The sprayed materials used are compati
ble and will not react or cause ignition of
the residue in the <iucts.
2.2. Nitrocellulose-based finishing material
shall not be used.
2.3. A filtering system shall be provided to
reduce the amount of overspray carried
into the duct manifold.
2.4. Automatic sprinkler protection shall be
provided at the junction of each booth
exhaust with the manifold, in addition to
the protection required by this chapter.
2404.7.6 Termination point. The termination point for
exhaust ducts discharging to the atmosphere shall be not
less than the following distances:
1. Ducts conveying explosive or flammable vapors,
fumes or dusts: 30 feet (9L44 mm) from the lot line;
10 feet (3048 rrun) frun openings into tlte building;
6 feet (1829 rnm) from exterior walls and roofs; 30
feet (9144 mm) from combustible walls or openings
into the building that are in the direction of the
exhaust discharge; 10 feet (3048 mm) above adjoin-
ing grade.
2. Other product-conveying outlets: 10 feet (3048 mm)
from the lot line; 3 feet (914 mm) from exterior
--. It- -,--l --!-- ln E--L la^lo ---\ f-^- ^-^-:--^waillti anu ruurli; ru rc€r \Ju+o uulr., rruill (,Pt'ruilgs
rnto the buildrng; l0 feet (3048 mm) above adjoin-
ing grade.
2404.1.7 Fan motors and belts, Electric motors driving
exhaust fans shall not be placed inside booths or ducts.
Fan rotating elements shall he. nonfe,rrons or nonsparking
or the casing shall consist of, or be lined with, such mate-
rial. Belts shall not enter the duct or booth unless the belt
and pulley within the duct are tightly enclosed.
24t4.7.8 Filters. Air intake filters that are part of a wall or
ceiling asserubly shall be listed as Class I or II iu accor-
darce with UL 900. Exhaust filters shall be required.
or replacemefit.
2404.7,8.3 Maintaining air vclocity. Visiblc gaugcs,
audible alarms or pressure-activated devices shall be
installed to indicate or enslrre that the required air
velocity is maintained.
2404.7.8.4 Filter rolls. Spray booths equipped with a
filter roll that is automatically advanced when the air
velocity is reduced to less than 100 feet per minute
(0.51 mls) shall be arranged to shut down the spraying
operation if the filter roll fails to advance automatically.
2404.7.8.5 Filter disposal. Discarded filter pads shall
be immediately removed to a safe, detached location or
placed in a noncombustible container with a tight-fit-
ting litl antl dispusurl uI pruperly.
2404.7.8.6 Spontaneous ignition. Spray booths using
dry filters shall not be used for spraying materials that
..^ Li-hI" o"cnan+ihla t^ c^^nfqna^rrc haafinc qnrl icni-4rv ru6r.rJ rsdvvyllvrv
tion. Filters shall be changed prior to spraying materials
that could react with other materials previously col-
lected. An example of a potentially reactive combina-
tion includes lacquer when combined with varnishes,
stains or primers.
2404,7.E,1 Waterwash spray booths. Waterwash
spray booths shall be of an approved design so as to
prevent excessive accumulation of deposits in ducts
and resldue at duct outlets. Such booths shall be
ananged so that air and overspray are drawn through a
continuously flowing water curtain before entering an
exhaust duct to the building exterior.
2404.8 Interlocks. Interlocks for spray application finishes
shall be in accordance with Sections 2404.8.1 through
2404.8.2.
24Q4,8,1 Automated spray application operations.
Where protecting automated spray application operations,
autouratic fire-extinguishing systems shall be equipped
with an approved interlock feature that will, upon dis-
chargc of thc system, automntically stop the spraying
operations and workpiece conveyors into and out of the
flammable yapor areas. Where the building is equipped
with a fire alarm system, discharge of the automatic fire-
extinguishing system shall also activate the building alarm
noiificaiion appiiances.
2404.8.1.L Alarm station. A manual fire alarm and
emergency system shutdown station shall be installed
to serve each flammable vapor area. When activated,
the station shall accomplish the functions indicated in
Section 2404.8.1.
2404,E,1.2 Alarm station location. Not less than one
manual fire alarm and emergency system shutdown sta-
tion shall be readily accessible to operating personnel.
Where access to this station is likely to involve expo-
sure to danger, an additional station shall be located
adjacent to an exit from the area.
250 2015 INTERNATIONAL FIRE CODE@
24A4.8.2 Ventilation interlock prohibited. Air makeup
and flammable vapor area exhaust systems shall not be
interlocked with the fire alarm system and shall remain in
operation during a fire alarm condition.
Exception: Where the type of fire-extinguishing sys-
tem used requires such ventilation to be discontinued,
air makeup and exhaust systems shall shut down and
dampers shall close.
2404.9 Limited spraying spaces. Limited spraying spaces
shall comply with Sections 2404.9.1through 24049.4.
2444.9.L Job size. The aggregate surface area to be
sprayed shall not exceed 9 square feet (0.84 m'z).
2404J2 Frequency, Spraying operations shall not be of a
continuous nature.
2404.9.3 Ventilation. Positive mechanical ventilation pro-
viding a minimum of six complete air changes per hour
shall be installed. Such system shall meet the requirements
of this code for handling flammable vapor areas. Explo-
sion venting is not required.
2404.9.4 Electrical wiring. Eiectrical wiring within 10
feet (3048 mm) of the floor and 20 feet (6096 mm) hori
zontally ofthe limited spraying space shall be designed for
Class I, Division 2locations in accordance withNFPA 70.
sEcTloN 240s
DIPPING OPERATIONS
2405.1General. Dip-tank operations shail comply with the
requirements of Section 2403 and Sections 2445.2 though
2405.1r.
2405.2 Location of dip-tank operations. Dip-tank opera-
tions conducted in buildings used for Group A, I or R occu-
pancies shall be located in a room designed for that purpose,
equipped with an approved automatic sprinkler system and
separated vertically and horizontally from other areas in
accordance with the International Building Code.
2405,3 Construction of dip tanks. Dip tanks shall be con-
structed in accordance with Sections 24453.I through
2405,3.4.3 and NFPA 34, Dip tanks, including drain boards,
shall be constructed of noncombustible material and their
supports shall be of heavy metal, reinforced concrete or
masonry.
2405.3,1. Overflow. Dip tanks greater than 150 gallons
(568 L) in capacity or 10 square feet (0.93 m'z) in liquid
surface area shall be equipped with a trapped overflow
pipe leading to an approvedlocation outside the building.
The bottom of the overflow connection shall be not less
than 6 inches (152 mm) below the top of the tank.
24A53.2 Bottom drains. Dip tanks greater than 500 gal-
lons (1893 L) in liquid capacity shall be equipped with
bottom drains that are arranged to automatically and man-
ually drain the tank quickly in the event of a fire unless the
viscosity of the liquid at normal atmospheric temperature
makes this impractical. Manual operation shall be from a
safe, accessible location. Where gravity flow is not practi-
FLAMMABLE FINISHES
cable, automatic pumps shall be provided. Such drains
shall be trapped and discharged to a closed, vented salvage
tank or to an approved outside location.
Exception: Dip tanks containing Class IIIB combusti-
ble liquids where the liquids are not heated above room
temperature and the process area is protected by auto-
matic sprinklers.
2405,3,3 Dipping liquid temperature control. Protection
against the accumulation of vapors, self-ignition and
excessively high temperatures shall be provided for dip-
ping liquids that are heated directly or heated by the sur-
faces of the object being dipped,
2405.3.4 Dip-tank covers. Dip-tank covers allowed by
Section 2405.4.1 shall be capable of manual operation and
shall be automatic closing by approved automatic-closing
devices designed to operate in the event of a fire.
2405.3,4.1 Construction. Covers shall be constructed
of noncombustible material or be of a tin-clad type with
enclosing metal applied with locked joints.
2405.3.4.2 Supports. Chain or wire rope shall be uti-
lized for cover supports or operating mechanisms.
2405.3.4.3 Closed covers. Covers shall be kept closed
when tanks are not in use.
2405.4 Fire protection. Dip-tank operations shall be pro-
tected in accordance with Sections 2405.4.1 through
2405.4.2.
2405.4.1 Fixed fire-extinguishing equipment. An
approved automatic fire-extinguishing system or dip-tank
cover in accordance with Section 2405.3.4 shall be pro-
vided for the following dip tanks:
1. Dip tanks less than 150 gallons (568 L) in capacity
or 10 square feet (0.93 m2) in liquid surface area.
2. Dip tanks containing a liquid with a flash point
below 110'F (43"C) used in such manner that the
liquid temperature could equal or be greater than its
flash pointfrom artificial or natural causes, and hav-
ing both a capacity of more than l0 gallons (37.9 L)
and a liquid surface area of more than 4 square feet
(0.37 m'z).
2405.4,1.1 Fire-extinguishing system. An approved
automatic fire-extinguishing system shall be provided
for dip tanks with a l5O-gallon (568 L) or more capac-
ity or t0 square feet (0.93 m') or larger in a liquid sur-
face area, Fire-extinguishing system design shall be in
accordance with NFPA 34.
2405.4,2 Portable fire extinguishers. Areas in the vicin-
ity of dip tanks shall be provided with portable fire extin-
guishers complying with Section 906 and suitable for
flammable and combustible liquid fires as specified for
extra (high) hazard occupancies.
2405.5 Housekeeping, maintenance and storage of haz.
ardous materials. Housekeeping, maintenance, storage and
use of hazardous materials shall be in accordance with Sec-
tions 2403.3 and 2403.4.
201 5 INTERNATIONAL FIRE CODE@ 251
FLAMMABLE FINISHES
2405.6 Sources of ignition. Control of sources of ignition
shall be in accordance with Section 2403.2.
2405,7 Ventilation of flammable vapor areas. Flammable
sEcTloN 2406
POWDER COATING
2/106.1General. Operations using finely ground particles of
with mechanical ventilation
adequate to prevent the datrgeruus acuuluulatiurt uf vapors.
Required ventilation systems shall be ananged such that the
failure of any ventilating fan shall automatically stop the dip-
ping conveyor system.
2405.8 Conveyor interlock. Dip tanks utilizing a conveyor
system shall be arranged such that in the event of a fire, the
conveyor system shall automatically cease motion and the
required tank bottom drains shall open.
2405.9 Hardening and tempering tanks. Hardening and
tempering tanks shall comply with Sections 2405.3 through
24A53.3, 24A5.4.2 and 2405.8, but shall be exempt from
other provisions of Section 2405.
2405,9,1l,ocation. Tanks shall be located as far as practi-
cal from fumaces and shall not be located on or near com-
bustible floors.
2405J2 Hoods. Tanks shall be provided with a noncom-
bustible hood and vent or other approvedventing means?
terminating outside of the structure to serve as a vent in
case of a fire. Such vent ducts shall be treated as flues and
prupcl L:lcarau!:es shall be nraintaincd frrrm combustiblc
materials.
2405,9.3 Alarms. Tanks shall be equipped with a high-
temperature limit switch arranged to sound an alarm when
the temperature of the quenching medium reaches 50oF
(10"C) below the/a sh point,
2405,9.4 f ire protection. Hardening and tempering tanks
greater than 500 gallons (1893 L) in capacity or 25 square
feet (2.3 m) in liquid surface area shall be protected by an
approved automatic fi re-extinguishing system complying
with Chapter 9.
2405.9.5 Use of air pressure. Air under pressure shall not
be used to fill or agitate oil in tanks.
2405.10 Flow-coating operations. Flow-coating operations
shall comply with the requirements for dip tanks. The area of
the sump and any areas on which paint tlows shall be consid-
ered to be the area of a dip tank.
2405.10.1 Paint supply. Paint shall be supplied by a grav-
ity tank not exceeding 10 gallons (38 L) in capacity or by
diroct low-proosure pumps arranged to shut dorvn aulomat-
ically irr uasc uf a fire by ntcaus of upproved hcat-actuatcd
devices.
2405.11 Roll-coating operations. Roll-coating operations
shall comply with Section 2405.10. In roll-coating operations
utilizing flammable or combustible liquids, sparks from static
electricity shall be prevented by electrically bonding and
grounding all metallic rotating and other parts of machinery
and equipment and by the installation of static collectors, or
by maintaining a conductive atmosphere such as a high rela-
tive humidity.
material 1n form by a
on Epray
guns or electrostatic powder spray guns shall comply with
Sections 2406,2 through 2406.7. In addition, Section 2407
shall apply to fixed electrostatic equipment used in powder
coating operations.
2406,2 Location. Powder coating operations shall be con-
ducted in enclosed powder coating rooms, enclosed powder
coating facilities that are ventilated or ventilated spray
booths.
2406,3 Construction of powder coating rooms and booths.
Powder coating rooms shall be constructed of noncombusti-
ble materials. Spray booths shall be constructed in accor-
dance with Section 2404.3.2.
Exception: Listed spray-booth assemblies that are con-
structed of other materials shall be allowed.
2406.4 Firc protection. Areas used for powder coating shall
be protected by an approved automatic fire-extinguishing
system complying with Chapter 9.
2406.4.1Additional protection for fixed systems. Auto-
mated powder application equipment shall be protected by
the installation of an approved, supervised flame detection
apparatus that shall react to the presence of flame within
0.5 second and shall accomplish all of the following:
1. Shutting down of energy supplies (electrical and
compressed air) to conveyor, ventilation, applica-
tion, transfer and powder collecdon equlpment.
2. Closing of segregation dampers in associated duct-
work to intemrpt airflow from application equip-
ment to powder collectors.
3. Activation of an alarm that is audible throughout the
powder coating room or booth.
2406.4.2 Fire extinguishers. Portable fire extinguishers
complying wil.h Sectiotr 906 shall be provided for areas
used for powder coating in accordance with the require-
ments for an extra-hazard occupancy.
2406.5 Operation and maintenance. Powder coating areas
shall be kept free from the accumulation of powder coating
dusts, including horizontal surfaces such as ledges, beams,
pipes, ltoods, booths and floors.
?.406.5.1Cleaning. Sutfaces shall be cleaned in such a
manner so as [u avoid scattering dusts to other places or
creating dust clouds. Vacuum sweeping equipment shall
be of a type approved for use in hazardous locations.
2406.6 Sources of ignition. Control of sources of ignition
shall be in accordancc with Section 2403.2 and Sections
2406.6.1 through 2406.6.4.
2406.6.1Drying, curing and fusion equipment. Drying,
curing and fusion equipment shall comply with Chapter
30.
252 2015 INTERNATIONAL FIBE CODEO