HomeMy WebLinkAboutFIRE REVIEW - C&L Body Shop - Paint BoothMEMO:
TO: REXBURG CITY COUNCIL
FROM: CHRIS HUSKINSON, FIRE MARSHAL
DATE: June 11, 2002
RE: AUTOMATIC SPRINKLER REQUIREMENTS IN SPRAY
BOOTHS AND SPRAY ROOMS
Dear Rexburg City Council,
This memo is in regard to the requirements for spray booths and spray rooms
within the city limits to be equipped with some type of automatic fire extinguishing
system as stated in the 1997 Uniform Fire Code. Section 4502.8.1 of that code says
".....Spray booths and spraying rooms shall be protected by approved automatic fire
extinguishing system."
This subject was brought forth to city council on October 18, 1995 where it was
voted by the majority of the members "that all paint booth will be required to put in an
approved automatic fire extinguishing system within 6 months." (See attached letter)
Upon review of this subject four shops in the city have failed to meet these requirements.
They are C & L Body Shop, Ray's Auto Body, Christensen Body Shop, and Taylor
Chevrolet Body Shop.
I sent a letter to these shops dated March 15, 2002 bringing the matter to their
attention and asking for compliance. (Copy attached) I also visited these shops on April
1, 2002 and again on April 30, 26&2. I have made follow-up visits on May 30, 2002 and
finally on Tune 11, 2002 for a total of five requests for compliance. To my knowledge
only one shop has gotten a bid for a system. Currently there are three shops in town
equipped with automatic fire extinguishing systems. (Interwest Cabinet, Erickson's (Pro
Collision), and BYU-I Paint Shop). At this time the county is not actively enforcing this
section of the code.
This requirement has been overlooked for many years and needs to be addressed.
Across the country there are numerous fires resulting in loss of life and propert each
year according to spokesman for Factory Mutual Insurance. The City of Rexburg should
be proactive and actively enforce t e ire code it has adopted.
Attached please find a copy of the applicable fire code section, City of Rexburg
letter dated October 19, 1995, and a fire department letter dated March 15, 2402. This
subject is scheduled to be on the June 19, 2002 agenda. If you have any questions please
feel free to contact me as soon as possible.
Sincerely,
Chris Huskinson, Fire Marshal
/fo
STATE OF IDAHO
NILE M YBOYLE
P.O.OR BOX 280
ROSEILERI BAGLEY
12 NORTH CENTER STREET
REXBURG, IDAH# 83440
RICHARD HORNER
PHONE (208) 359-3020
TREASURER B FINANCIAL OFFICER
. FAX (208) 3559-3022
October 19, 1995
TO: Body Shop Paint Booths
At the regular City Council meeting held on October 18, 1995,
the City Council voted that all paint booths will be required
to put in an approved automatic fire extinguishing system
within 6 months. If you have any extenuating circumstances -
which might keep you from getting this installed in that
length of time, please contact Mayor Boyle at 359-3028 or
stop at City Hall and talk to him.
Sincerely,
Rose Bagle Cit Clerk
City of Rexburg
RB /jw
cc: tC & L Body Shop ®Christensen Body Shop
Pro Collision Repair Car Shop - Tri State
tR.ayts Auto Body Always Auto
Taylor Chevrolet Body Shop
REX6URG/AL1DIS'ON COUNTY
EMERGENCYS'E.R VICES'
C & L Body Shop
265 West Main Street
Rexburg, Idaho 83440
Dear C & L Body Shop,
REXBURG, IDAHO 83440
359-3010 -
March 15, 2002
Upon review of our files it has been noted that your facility was to have an
approved automatic sprinkler system installed in your paint booth and mixing rooms.
This action was voted upon by the Rexburg City Council on October 18, 1995 in an effort
to solve the problem of noncompliance With the Uniform Fire Code.
This requirement has been overlooked in Rexburg, even though it has been in the
Uniform Fire Code since 1982. When passed by the City Council a six-month time frame
was allowed for businesses to comply.
As that deadline has expired the city would like to schedule an inspection at your
facility to insure compliance. Please contact myself at the fire department for an
appointment.
I look forward to working with you in the near future.
Sincerely,
Chris Huskinson
Fire Marshal
1997 UNIFORM FIRE CODE
PAIN V
SPECIAL PROCESSES
ARTICLE 45 - APPLICATION OF FLAMMABLE FINISHES
SECTION 4501 — GENERAL
4501.1 Scope. Locations and areas where the following activi-
ties are conducted shall be in accordance with Article 45:
1. The application of flammable or combustible paint, varnish,
lacquer, stain or other flammable or combustible liquid applied as
spray by compressed air, airless or hydraulic atomization, steam,
electrostatic or other methods or means in continuous or intermit-
tent process,
2. Dip tank operations in which articles or materials are passed
through contents of tanks, vats or containers of flammable or com-
bustible liquids, including coating, finishing, treatment and simi-
lar processes, and
3. The application of combustible powders by powder spray
guns, electrostatic powder spray guns, fluidized beds or electro-
static fluidized beds.
4501.2 Definitions. For definitions of SPRAY BOOTH,
SPRAYING AREA and SPRAYING ROOM, see Article 2.
4501.3 Permits. For permits for spraying or dipping operations
utilizing flammable or combustible liquids, or the application of
combustible powders regulated by Article 45, see Section 105,
Permit s.1.
4501.4 Smoldng. Smoking shall be prohibited in spray -finish-
ing areas and in the vicinity of dip tanks. NO SMOKING signs
with lettering of approved size shall be conspicuously posted in
such areas.
4501.5 Welding Warning Signs. Conspicuous signs with the
following warning shall be posted in the vicinity of spraying areas,
dipping operations and paint storage rooms:
NO WELDING
The use of welding or cutting equipment in or near
this area is dangerous because of fire and explosion
hazards. Welding and cutting shall be done only un-
der the supervision of the person in charge.
4501.6 Electrical Wiring and Equipment. Electrical wiring
and equipment shall be in accordance with Article 45 and the Elec-
trical Code.
4501.7 Storage, Use and Handling of Flammable and Com-
bustible Liquids. The storage, use and handling of flammable
and combustible liquids shall be in accordance with Article 79.
SECTION 4502 — SPRAY FINISHING
4502.1 Location of Spray -finishing Operations. When con-
ducted in buildings used for assembly, educational, institutional or
residential occupancies, spray -finishing operations shall- be lo-
cated in a spraying room protected with an approved automatic
sprinkler system and separated vertically and horizontally from
other areas in accordance with the Building Code.
4501
4502.2.9
In other occupancies, spray -finishing operations shall be con-
ducted in a spray booth, spraying area or spraying room approved
for such use. Limited spraying areas for touch-up or spot painting
may be approved, provided they meet the requirements of Article
45. See Section 4502.6.
4502.2 Spray Booths.
4502.2.1 Materials. Spray booths shall be substantially con-
structed of steel not less than 0.044 inch (1.118 mm) (18 gage) in
thickness or other approved noncombustible materials.
4502.2.2 Size. The aggregate area of spray booths in a building
shall not exceed the lesser of 10 percent of the area of any floor of a
building or the basic area allowed for a Group H, Division 2 Occu-
pancy without area increases, as set forth in the Building Code (see
UBC Table 5-B).
The area of any individual spray booth in a building 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
(45 m2).
4502.2.3 Surfaces. Interior surfaces of spray booths shall be
smooth and continuous without edges and otherwise designed to
prevent pocketing of residue, to allow free passage of exhaust air
from all parts of the interior and to facilitate washing and cleaning
without injury.
4502.2.4 Floors. Floors of spray booths shall be of noncombus-
tible material or shall be covered with a noncombustible, non -
sparking material of such character to facilitate safe cleaning and
removal of residue.
4502.2.5 Baffles. If installed, baffle plates shall be of a noncom-
bustible material readily removable or accessible to facilitate
cleaning and designed to provide an even flow of air through the
booth and to prevent the deposit of overspray before it enters the
exhaust duct. Baffle plates shall not be installed in the exhaust
ducts.
4502.2.6 Deflectors. Spray booths having a frontal area of more
than 9 square feet (0.84 m) and not equipped with doors shall
have a metal deflector or fire curtain not less than 41/2 inches
(114.3 mm) deep installed at the upper outer edge of the booth over
the booth opening.
4502.2.7 Separation. Spray booths shall be separated from oth-
er operations by not less than 3 feet (914 mm), by a wall or parti-
tion, or by a greater distance as required by the chief.
4502.2.8 Clear space. All portions of spray booths shall be
readily available for cleaning, and a clear space of not less than
3 feet (914 mm) shall be kept free of storage or combustible mate-
rials.
4502.2.9 Light fixtures. When spray booths are illuminated,
fixed lighting units which transmit light into the spray booth
through heat-treated
_ or hammered wire glass shall be used. Glass
panels shall be arranged to mmmuze re age and so that normal
accumulation of residue on the exposed surface of a panel will not
be raised to a dangerous temperature by heat from the source of
illumination.
1-89
1997 UNIFORM FIRE CODE
TABLE 4502.5-A—MINIMUM THICKNESS OF EXHAUST DUCTS
DIAMETER OF DUCT (inches) I MINIMUM SHEET THICKNESS (inches)
x 25.4 for mm
8 or less
0.021 (24 gage
Over 8 to 18
0.027 (22 gage)
Over 18 to 30
0.033 (20 gage
Over 30
0.044 (18 gage)
4502.5.6 Clearance between ducts and combustible construc-
tion.
4502.5.6.1 General. Exhaust ducts shall have a clearance from
combustible construction or material of not less than 18 inches
(457 mm) unless protection of exposed surfaces is provided in ac-
cordance with Section 4502.5.6.2.
4502.5.6.2 Protected combustible construction. When com-
bustible construction is provided with the following protection
applied to all surfaces within 18 inches (457 mm) of the exhaust
duct, clearances shall not be less than those indicated -
1. 0.013 -inch (0.33 mm) (28 gage) sheet metal on 1/4 -inch (6.4
mm) insulating millboard ........ 12 inches (305 mm)
2. 0.013 -inch (0.33 mm) (28 gage) sheet metal on 1/8 -inch (3.2
mm) insulating millboard spaced out 1 inch (25.4 mm) on
noncombustible spacers .......... 9 inches (229 mm)
3. 0.027 -inch (0.67 mm) (22 gage) sheet metal on 1 -inch (25.4
mm) rockwool batts reinforced with wire mesh or the equiva-
lent ........................... 3 inches (76 mm)
4502.5.7 Product -conveying system intake. The mechanical
ventilation system shall have air intake ducts extended to pick up
flammable vapor within 6 inches (153 mm) of the floor.
4502.5.8 Duct bends. Exhaust ducts shall not include individual
bends exceeding 45 degrees measured from the center line of the
duct. Bends, turns and elbows in ducts and pipes shall be con-
structed in a manner which does not reduce the cross-sectional
area of the duct or pipe.
4502.5.9 Cleanouts. Cleanout openings shall be provided at in-
tervals which allow thorough cleaning of ducts. Cleanout open-
ings in ducts and pipes shall be equipped with. tightfitting sliding
or hinged doors constructed of metal which is equal to or greater
than the thickness of the duct or pipe. Such doors shall be equipped
with a substantial latch to hold the door tightly closed.
4502.6 Limited Spraying Areas.
4502.6.1 General. When approved, limited spraying areas are
allowed in accordance with Section 4502.6.
4502.6.2 Occupancy. Limited spraying areas shall only be lo-
cated in Group H, Division 4 Occupancies.
4502.6.3 Job size. The- aggregate surface area to be sprayed
shall not exceed 9 square feet (0.84 m2).
4502.6.4 Frequency. Spraying operations shall not be of a con-
tinuous nature.
4502.6.5 Ventilation. Positive mechanical ventilation shall be
installed -which provides a minimum of six complete air changes
per hour. Such system shall meet the requirements of this code for
handling flammable vapors.
4502.6.6 Electrical wiring. Electrical wiring within 10 feet
(3048 mm) of the floor shall be designed for Class I, Division 2
locations in accordance with the Electrical Code.
TABLE 4502.5-A
4502.5.6 -4502.9.3
4502.7 Storage, Use and Handling of Flammable and Com-
bustible Liquids.
4502.7.1 General. The storage and handling of flammable and
combustible liquids shall be in accordance with Article 79 and
Section .4502.7.
4502.7.2 Storage. Where the quantity of liquid in 5 -gallon (18.9
=L)--and-smailErconfaiiieis;-b-ther-than dffg- iargeaibd corfr—ZE rs;—
exceeds a total of 10 gallons (37.9 L), such liquids shall be stored
in a storage cabinet, liquid storage room or a room or building for
using, dispensing and mixing liquids in quantities exceeding ex-
empt amounts. See Sections 7902.5.9, 7902.5.11 and 7903.2.3.
Open containers and glass containers shall not be used.
4502.7.3 Handling. Original closed containers, approved porta-
ble tanks, approved safety cans or a properly arranged system of
piping shall be used for bringing flammable or combustible liq-
uids into spray -finishing areas.
4502.7.4 Use. Containers supplying spray nozzles shall be of a
closed type or provided with metal covers which are kept closed.
Containers not resting on floors shall be on noncombustible sup-
ports or suspended by wire cables. Containers supplying spray
nozzles by gravity flow shall not exceed 10 gallons (37.9 L) capac-
ity.
4502.7.5 Valves. Containers and piping to which a hose or flex-
ible 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.
4502.7.6 Ignition sources. Heaters shall not be located in spray
booths or other locations subject to accumulation of deposits or
combustible residue.
4502.7.7 Pumped liquid supplies. If flammable or combustible
liquids are supplied to spray nozzles by positive displacement
pumps, pump discharge lines shall be provided with an approved
relief valve discharging to pump suction or a safe detached loca-
tion.
4502.7.8 Liquid transfer. When a flammable mixture is trans-
ferred from one portable container to another, a bond shall be pro-
vided between the two containers. At least one container shall be
grounded. Piping systems for Class I and Class II liquids shall be
permanently grounded.
4502.8 Fire -protection Equipment.
4502.8.1 General. Spray booths and spraying rooms shall be
protected by approved automatic fire -extinguishing systems.
Such systems shall be extended to protect exhaust plenums, ex-
haust ducts and both sides of dry filters when such filters are used.
For installation of automatic sprinklers in ducts, see the Mechani-
cal Code. (See UMC Chapter 5.)
4502,8.2 Fire extinguishers. Portable fire extinguishers shall
be provided for spraying areas in accordance with the require-
ments for an extra (high) hazard occupancy as set forth in UFC
Standard 10-1.
4502.9 -Operations and Maintenance.
4502.9.1 General. Spraying areas shall be kept free from the
accumulation of deposits of combustible residues, as practical,
with cleaning conducted daily if necessary.
4502.9.2 Tools. Scrapers, spuds or other tools used for cleaning
purposes shall be constructed of nonsparking materials.
4502.9.3 Residue. Residues removed during cleaning and de-
bris contaminated with residue shall be immediately removed
from premises and properly disposed of.
1-91
APPENDIX A
Appendix A
This Appendix is not part of the requirements of this NFPA document, but is
included for information purposes only.
The following Appendix material is provided to explain
basic principles and give loss experience.
A-1 Scope and Definitions — General.
The safety of life and property from fire or explosion as
a result of spray applications of flammable and combusti-
ble paints and finishes varies depending upon the arrange-
ment and operation of a particular installation.
The principal hazards of spray application operations
originate from flammable or combustible liquids or
powders and their vapors or mists and from highly com-
bustible residues or powders.
Properly constructed spray booths, with adequate me-
chanical ventilation, may be used to discharge vapors or
powder to a safe location and reduce the possibility of an
explosion. In a like manner, the accumulation of overspray
residues, many of which are not only highly combustible
but subject to spontaneous ignition, can be controlled.
The elimination of all sources of ignition in areas where
flammable or combustible liquids, vapors, mists, or com-
bustible residues are present, together with constant super-
vision and maintenance, are essential to the safe operations
of spraying.
The human element necessitates careful consideration
of the location of the operations and the installation of extin-
guishing equipment so that, if a fire does occur, the possi-
bility of its spread to other property will be reduced and
the probability of damage to other property by extinguish-
ing agents will be minimized.
A-1-1 Scope.
A -1-1.3(a) Outdoor Application. This standard does
not cover the outdoor spray application to buildings,
bridges, tanks, or similar structures. With such occasional
applications, overspray deposits are not likely to create a
hazardous condition and the space in which flammable
vapor -air mixtures may be present is limited because of
atmospheric dilution.
A -1-1.3(b) Indoor Application. The occasional opera-
tion of small portable spraying apparatus for spraying
building interiors and similar uses is such that hazardous
accumulations of overspray deposits are not likely to occur.
Such operations are not within the scope of this standard.
When building or maintenance spraying is considered
outside the scope of this standard by the authority having
jurisdiction because of the infrequency of application, the
following safeguards should be observed:
(a) Adequate ventilation should be provided at all times
when conducting indoor spraying operations, particularly
in small enclosures.
(b) Spray should not be conducted in the vicinity of open
flames or other sources of ignition.
(c) Cans or other containers of paints, thinners, or other
protective coatings should be kept tightly closed at all times
when they are not required to be open to replenish the
supply of such material at the place of application.
33-17
(d) Oily or paint -laden rags or waste should be promptly
disposed of at the end of each day's operations because of
the danger of spontaneous ignition. The same fundamen-
tal requirements of cleanliness should be observed as are
required in the spray application of coating materials in
industrial processes.
A-1-1.4 Waterborne Coatings. Flammable and com-
bustible application of finishing materials contemplated by
this standard do not ordinarily include water solutions nor
water -emulsion liquids. Certain water -emulsion liquids,
however, although involving little or no hazard in the liquid
state, may leav6 highly combustible residues upon evapora-
tion of the liquid carrier. The provisions of this standard
for minimizing the hazards of combustible residues should
be followed irrespective of the characteristics of the liquid
carrier.
A-2 Location of Spray Application Operations
General. Fires in spray areas develop rapidly with
large quantities of heat and smoke generated. Therefore,
facilities should be located so that there is adequate egress
for operating and maintenance personnel and access for
fire fighting operations.
Factories. In factories conducting extensive spray ap-
plication operations, it is desirable that the process be con-
fined to a building detached or separated by fire walls from
storage or other processing buildings wherever practical.
The adaptation of assembly lines or conveyor systems
to spray processes may present some additional problems
of fire hazard segregation. If conveyor systems extend to
or from a detached building, a sprinklered noncombusti-
ble connecting passageway may be advisable. If conveyor
systems go through floors, the floor openings should be sur-
rounded by deep draft curtains on the ceiling beneath and
may be provided with automatically controlled high veloc-
ity spray nozzles arranged to set up a counter draft. If con-
veyor systems pierce fire walls, it is difficult to arrange
automatic fire doors to protect the openii1gs in a practical
and reliable manner. In some instances, such openings
have been provided with noncombustible tunnels extend-
ing on each side of fire wall with tunnels protected by
specially designed automatic spray or sprinkler systems.
Rooms containing spray application operations should
preferably be separated from other occupancies by tight-
fitting partitions. In sprinklered buildings, rooms of ex-
tensive area having spray finishing operations should be
provided with noncombustible draft curtains, extending
downward from ceilings as far as practical but not less than
18 in. (46 cm). Such curtains aid in preventing the open-
ing of sprinklers outside the area enclosed by curtains and
tend to confine the discharge of water to the immediate
area of the fire.
Where spray application operations are located on upper
floors of buildings, they should not be located immediately
over high concentrations of damageable goods and positive
provisions should be made for the waterproofing and drain-
age of the floor of the spray area.
Waterproof floors shall be arranged to drain to the out-
side of building, internal drains or other suitable place.
Properly designed and guarded drains or scuppers of suf-
ficient number and size to dispose of all surplus water likely
1989 Edition