SPRAY FINISHING USING FLAMMABLE AND COMBUSTIBLE MATERIALS 29 CFR 1910.107, Subpart H Samuel D. Yates, Corporate Safety and...
<ul><li>Spray application of flammable and combustible liquids presents a fire and explosion hazard that requires specific...
APPLICABLE DEFINITIONS <ul><li>(1)  Aerated solid powders. Aerated powders are any powdered material that is used as a coa...
<ul><li>(2)  Spraying area. Any area in which dangerous quantities of flammable vapors or mists, or combustible residues, ...
<ul><li>(5)  Dry spray booth. A spray booth not equipped with a water washing system as described above. A dry spray both ...
<ul><li>(6) Fluidized bed. A container holding powder coating material which is aerated from below so as to form an air-su...
<ul><li>(8) Approved. Shall mean approve and listed by a nationally recognized testing laboratory. </li></ul><ul><li>(9) L...
POWDER PAINT SYSTEM
SPRAY BOOTHS <ul><li>LOCATION </li></ul><ul><li>Spray booths and all associated operations  </li></ul><ul><li>such as pain...
SPRAY BOOTHS <ul><ul><li>CONSTRUCTION </li></ul></ul><ul><ul><li>Spray booths should be constructed of 18 </li></ul></ul><...
<ul><li>SPRAY EQUIPMENT </li></ul><ul><li>All spray equipment, mixers, pumps, etc. </li></ul><ul><li>should be specificall...
<ul><li>VENTILATION  </li></ul><ul><li>The exhaust ventilation system must pro- </li></ul><ul><li>vide a minimum airflow o...
<ul><li>VENTILATION </li></ul><ul><li>Visible gauges or audible alarm or pressure </li></ul><ul><li>activated devices shal...
<ul><li>VENTILATION </li></ul><ul><li>The exhaust fan shall be solidly mounted  </li></ul><ul><li>and secured, with non-sp...
<ul><li>VENTILATION </li></ul><ul><li>The ventilation system must be equipped </li></ul><ul><li>with some type of noncombu...
<ul><li>VENTILATION </li></ul><ul><li>Metal baffle type filters may also be used. </li></ul><ul><li>However, one of the sa...
<ul><li>ELECTRICAL </li></ul><ul><li>In general, there should be no electrical </li></ul><ul><li>equipment, switches, ligh...
<ul><li>Example of a light fixture mounted outside of the spray area and serviced from outside the spray area. From NFPA 3...
<ul><li>A second method of mounting light fixtures is acceptable. </li></ul>Examples of light fixtures that are an integra...
<ul><li>ELECTRICAL </li></ul><ul><li>All metal parts of the spray booth, duct, </li></ul><ul><li>etc., must be properly el...
<ul><li>FIRE PROTECTION </li></ul><ul><li>All spraying operations utilizing flammable </li></ul><ul><li>or combustible mat...
Typical Sprinkler Arrangement From “ TECH Bulletin: Spray Booths”,  Frankenmuth Insurance
<ul><li>FIRE PROTECTION </li></ul><ul><li>Sprinkler head coverage should not exceed </li></ul><ul><li>90 square feet per h...
<ul><li>FIRE PROTECTION </li></ul><ul><li>Where there is no water available, dry </li></ul><ul><li>chemical, CO 2 , and ot...
<ul><li>CONVEYORS </li></ul><ul><li>Where conveyors are arranged to carry work into or out of spray booths, the openings  ...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>CONFORMNCE </li></ul><ul><li>The stora...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>QUANTITY STORED </li></ul><ul><li>The ...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>Bulk storage of portable containers of...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>CONTAINERS </li></ul><ul><li>Original ...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>TRANSFERRING LIQUIDS </li></ul><ul><li...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS   </li></ul><ul><li>Adequate precautions shall be taken ...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING  </li></...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING  </li></...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING  </li></...
<ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING  </li></...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Spraying – Spraying shall not be conducted </li></ul><ul><li>outside ...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Residue Disposal – Residue scrapings and </li></ul><ul><li>other debr...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Clothing Storage – Spray finishing em- </li></ul><ul><li>ployees’ clo...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Cleaning Solvents – Use of solvents for </li></ul><ul><li>cleaning op...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Hazardous Materials Combinations –  </li></ul><ul><li>Spray booths sh...
<ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>“ No Smoking” signs in large letters on  </li></ul><ul><li>contrastin...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>CONFORMANCE </li></ul><ul><li>Installation and use shall conform t...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrostatic apparatus and devices must </li></ul><ul><li>be of a...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrodes and electrostatic atomizing </li></ul><ul><li>heads mus...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>A safe distance must be maintained be- </li></ul><ul><li>tween goo...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Goods being painted using this process </li></ul><ul><li>must be t...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>PROHIBITED : This process is not accep- </li></ul><ul><li>table wh...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrostatic apparatus shall be equipped </li></ul><ul><li>with a...
<ul><li>Failure of ventilating equipment for any </li></ul><ul><li>cause. </li></ul><ul><li>Stoppage of the conveyor carry...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>GUARDING </li></ul><ul><li>Equipment must be guarded by adequately...
<ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Ventilation. The ventilation system must </li></ul><ul><li>insure ...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>This includes any equipment using electr...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>CONFORMANCE </li></ul><ul><li>Electrosta...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Equipment Approval And Specifications: <...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Equipment Approval And Specifications: <...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Electrical Support Equipment: </li></ul>...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Grounding </li></ul><ul><li>All electric...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Maintenance of Grounds </li></ul><ul><li...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Interlocks </li></ul><ul><li>The electri...
<ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Ventilation </li></ul><ul><li>The sprayi...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Conformance: </li></ul><ul><li>Drying, curing, or fusion app...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Prohibition of Alternate Use </li></ul><ul><li>Spray booths,...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Adjacent Systems Interlocked </li></ul><ul><li>Drying, curin...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Thoroughly ventilate the drying space  </li></ul><ul><li>bef...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Permitted Alternate Use </li></ul><ul><li>Automobile refinis...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Interiors of spray areas must be kept free </li></ul><ul><li...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>The spraying and drying apparatus and the </li></ul><ul><li>...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>2.  The spray enclosure will be purged of </li></ul><ul><li>...
<ul><li>during the drying process and the  </li></ul><ul><li>drying apparatus will automatically </li></ul><ul><li>shut of...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>All electrical wiring and equipment must con- </li></ul><ul>...
<ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>The drying apparatus shall contain a prom- </li></ul><ul><li...
<ul><li>Automobile Undercoating in Garages </li></ul><ul><li>Automobile undercoating spray operations in </li></ul><ul><li...
<ul><li>POWDER COATING </li></ul><ul><li>Electrical and other sources of ignition. </li></ul><ul><li>Electrical equipment ...
<ul><li>POWDER COATING </li></ul><ul><li>All nondeposited air-suspended powders </li></ul><ul><li>must be safely removed b...
<ul><li>POWDER COATING </li></ul><ul><li>The provisions of the Standard for ovens </li></ul><ul><li>and furnaces, NFPA No....
<ul><li>POWDER COATING </li></ul><ul><li>“ No Smoking” signs in large areas on con- </li></ul><ul><li>trasting color backg...
<ul><li>POWDER COATING </li></ul><ul><li>Fixed Electrostatic Spraying Equipment </li></ul><ul><li>Shall conform to require...
<ul><li>POWDER COATING </li></ul><ul><li>Electrostatic Hand Spraying Equipment </li></ul><ul><li>Shall conform to the requ...
<ul><li>POWDER COATING </li></ul><ul><li>Electrostatic Fluidized Beds </li></ul><ul><li>Shall be of approved typs. </li></...
<ul><li>POWDER COATING </li></ul><ul><li>All electrical portions of the equipment </li></ul><ul><li>with the exception of ...
<ul><li>POWDER COATING </li></ul><ul><li>Objects being coated must be in contact </li></ul><ul><li>with the conveyor or ot...
<ul><li>POWDER COATING </li></ul><ul><li>The electrical system shall be interlocked </li></ul><ul><li>with the ventilation...
<ul><li>ORGANIC PEROXIDES AND DUAL </li></ul><ul><li>COMPONENT COATING </li></ul><ul><li>All spraying operations involving...
<ul><li>ORGANIC PEROXIDES AND DUAL </li></ul><ul><li>COMPONENT COATING </li></ul><ul><li>Smoking shall be prohibited and “...
<ul><li>RFERENCES </li></ul><ul><li>(1) NFPA 33, Standard for Spray Application  </li></ul><ul><li>Using Flammable or Comb...
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Spray Finishing Materials

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  • Spray Finishing Materials

    1. 1. SPRAY FINISHING USING FLAMMABLE AND COMBUSTIBLE MATERIALS 29 CFR 1910.107, Subpart H Samuel D. Yates, Corporate Safety and Environmental Meadowcraft, Inc . [email_address]
    2. 2. <ul><li>Spray application of flammable and combustible liquids presents a fire and explosion hazard that requires specific controls. Flammable and even combustible liquids are readily ignited when suspended in the air as a fine mist and suspended powder particles and dust can be explosive. Overspray residue is often combustible, thus presenting a fire hazard both during the spray application and also after the spray application is complete. </li></ul><ul><li>The National Fire Protection Association (NFPA) Code #33, “ Spray Application Using Flammable and Combustible Materials” is the nationwide governing code in this process. </li></ul>
    3. 3. APPLICABLE DEFINITIONS <ul><li>(1) Aerated solid powders. Aerated powders are any powdered material that is used as a coating material and shall be fluidized within a container by passing air uniformly from below (Similar to the operation of quicksand). It is common practice to fluidize such materials to form a fluidized powder bed and then dip the part to be coated into the bed in a manner similar to liquid dipping. Such beds are also used as sources for powder spray operations. </li></ul>
    4. 4. <ul><li>(2) Spraying area. Any area in which dangerous quantities of flammable vapors or mists, or combustible residues, dusts, or deposits are present due to the operation of spraying processes. </li></ul><ul><li>(3) Spray booth. A power-ventilated structure provided to enclose or accommodate a spraying operation to confine and limit the escape of spray, vapor, and residue, and to safely conduct or direct them to an exhaust system. </li></ul><ul><li>(4) Waterwash spray booth. A spray booth equipped with a water washing system designed to minimize dusts or residues entering exhaust ducts and to permit the recovery of overspray finishing material. </li></ul>
    5. 5. <ul><li>(5) Dry spray booth. A spray booth not equipped with a water washing system as described above. A dry spray both may be equipped with: (i) distri- </li></ul><ul><li>bution or baffle plates to promote an even flow of air through the booth or cause the deposit of overspray before it enters the exhaust duct; or (ii) overspray dry filters to minimize dusts; or (iii) overspray dry filter rolls designed to minimize dusts or residues entering exhaust ducts; or (iv) overspray dry filter rolls designed to minimize dusts or residues entering exhaust ducts; or (v) where dry powders are being sprayed with powder collection systems so arranged in the exhaust to capture oversprayed material. </li></ul>
    6. 6. <ul><li>(6) Fluidized bed. A container holding powder coating material which is aerated from below so as to form an air-supported expanded cloud of such material through which the preheated object to be coated is immersed and transported. </li></ul><ul><li>(7) Electrostatic fluidized bed. A container holding powder coating material which is aerated from below so as to form an air-supported expanded cloud of such material which is electrically charged with a charge opposite to the charge of the object to be coated; such object is transported through the container immediately above the charged and aerated materials in order to be coated. </li></ul>
    7. 7. <ul><li>(8) Approved. Shall mean approve and listed by a nationally recognized testing laboratory. </li></ul><ul><li>(9) Listed. See “approved” in 1910.107(a)(8). </li></ul>
    8. 8. POWDER PAINT SYSTEM
    9. 9. SPRAY BOOTHS <ul><li>LOCATION </li></ul><ul><li>Spray booths and all associated operations </li></ul><ul><li>such as paint mixing and setup areas </li></ul><ul><li>should be in a designated location away </li></ul><ul><li>from spark producing or open flame equip- </li></ul><ul><li>ment such as welding, cutting, heat </li></ul><ul><li>treating or heaters. </li></ul><ul><li>Smoking should be strictly prohibited and </li></ul><ul><li>signs prohibiting smoking should be prominently </li></ul><ul><li>posted. </li></ul><ul><li>Flooring must be non-combustible and easy to </li></ul><ul><li>clean. </li></ul>
    10. 10. SPRAY BOOTHS <ul><ul><li>CONSTRUCTION </li></ul></ul><ul><ul><li>Spray booths should be constructed of 18 </li></ul></ul><ul><ul><li>gauge steel. </li></ul></ul><ul><ul><li>All areas of the booth must be accessible for </li></ul></ul><ul><ul><li>maintenance and cleaning. When necessary to </li></ul></ul><ul><ul><li>facilitate cleaning, exhaust ducts shall be pro- </li></ul></ul><ul><ul><li>vided with an ample number of access doors. </li></ul></ul><ul><ul><li>Exhaust ducts should be run as direct as </li></ul></ul><ul><ul><li>possible and should be well supported. A min- </li></ul></ul><ul><ul><li>imum clearance of 18” is needed from the duct to any </li></ul></ul><ul><ul><li>combustible roof or other construction. This distance may be reduced to as little as three inches if protected in </li></ul></ul><ul><ul><li>accordance with NFPA #33. </li></ul></ul>
    11. 11. <ul><li>SPRAY EQUIPMENT </li></ul><ul><li>All spray equipment, mixers, pumps, etc. </li></ul><ul><li>should be specifically designed and manu- </li></ul><ul><li>factured for flammable spray applications. </li></ul><ul><li>All spray equipment should be interlocked </li></ul><ul><li>with the booth system so that the equip- </li></ul><ul><li>ment will not operate unless the ventilation </li></ul><ul><li>system is working. </li></ul>
    12. 12. <ul><li>VENTILATION </li></ul><ul><li>The exhaust ventilation system must pro- </li></ul><ul><li>vide a minimum airflow of 100 linear feet </li></ul><ul><li>per minute across all both openings except </li></ul><ul><li>for electrostatic spraying operations where </li></ul><ul><li>the minimum air flow may be 60 linear </li></ul><ul><li>feet per minute or more, depending on the </li></ul><ul><li>volume of the finishing material being </li></ul><ul><li>applied and its flammability and explosion </li></ul><ul><li>characteristics. </li></ul>
    13. 13. <ul><li>VENTILATION </li></ul><ul><li>Visible gauges or audible alarm or pressure </li></ul><ul><li>activated devices shall be installed to </li></ul><ul><li>indicate or insure that the required air </li></ul><ul><li>velocity is maintained. Filter rolls shall be </li></ul><ul><li>inspected to insure proper replacement of </li></ul><ul><li>filter media. </li></ul>
    14. 14. <ul><li>VENTILATION </li></ul><ul><li>The exhaust fan shall be solidly mounted </li></ul><ul><li>and secured, with non-sparking, non- </li></ul><ul><li>ferrous blades. The fan electric motor must </li></ul><ul><li>be located outside the duct and suitable for </li></ul><ul><li>hazardous locations and fan belts may not </li></ul><ul><li>enter the duct unless the belt and pulley </li></ul><ul><li>within the duct are completely enclosed. </li></ul>
    15. 15. <ul><li>VENTILATION </li></ul><ul><li>The ventilation system must be equipped </li></ul><ul><li>with some type of noncombustible filter </li></ul><ul><li>system. Mesh filters are preferred over the </li></ul><ul><li>baffle type, but must be periodically </li></ul><ul><li>replaced. Mesh filters cannot be used when </li></ul><ul><li>applying a spray material that is highly </li></ul><ul><li>susceptible to spontaneous heating and </li></ul><ul><li>ignition. </li></ul>
    16. 16. <ul><li>VENTILATION </li></ul><ul><li>Metal baffle type filters may also be used. </li></ul><ul><li>However, one of the safest and most effic- </li></ul><ul><li>ient filter systems is the water wash system, </li></ul><ul><li>where the vapor laden air is drawn through </li></ul><ul><li>a recirculating water curtain which traps </li></ul><ul><li>the overspray particles. The water must be </li></ul><ul><li>changed on a schedule established by the </li></ul><ul><li>manufacturer. </li></ul>
    17. 17. <ul><li>ELECTRICAL </li></ul><ul><li>In general, there should be no electrical </li></ul><ul><li>equipment, switches, lights, etc. located </li></ul><ul><li>inside a spray booth. </li></ul><ul><li>Electrical wiring, lighting fixtures and </li></ul><ul><li>equipment located in the spray booth must </li></ul><ul><li>meet Class I, Division I specifications of </li></ul><ul><li>the National Electrical Code (NEC). </li></ul><ul><li>Lights may be located above the spray booth, </li></ul><ul><li>behind a substantial glass panel, which is sealed </li></ul><ul><li>to prevent leakage of vapors or mists at the edge. </li></ul>
    18. 18. <ul><li>Example of a light fixture mounted outside of the spray area and serviced from outside the spray area. From NFPA 33. </li></ul>
    19. 19. <ul><li>A second method of mounting light fixtures is acceptable. </li></ul>Examples of light fixtures that are an integral part of the spray area and are serviced from inside the spray area. NFPA 33
    20. 20. <ul><li>ELECTRICAL </li></ul><ul><li>All metal parts of the spray booth, duct, </li></ul><ul><li>etc., must be properly electrically </li></ul><ul><li>grounded in an effective and permanent </li></ul><ul><li>manner. </li></ul><ul><li>Electrical features located outside, but </li></ul><ul><li>immediately adjacent to the spray booth </li></ul><ul><li>must meet the following provision: </li></ul><ul><li>(1) If the ventilation system is interlocked with </li></ul><ul><li>the spray equipment, areas 5 feet horizontally </li></ul><ul><li>and 3 feet vertically from all openings shall </li></ul><ul><li>meet Class I, Division 2 specifications of the NEC. </li></ul><ul><li>(2) If the ventilation system is not interlocked with spray </li></ul><ul><li>equipment , areas 10 feet horizontally and 3 feet vertically from </li></ul><ul><li>all openings shall meet Class I, Division 2 NEC specifications. </li></ul>
    21. 21. <ul><li>FIRE PROTECTION </li></ul><ul><li>All spraying operations utilizing flammable </li></ul><ul><li>or combustible materials must be pro- </li></ul><ul><li>tected by an automatic sprinkler system </li></ul><ul><li>installed in the booth, behind the filters, </li></ul><ul><li>and in the exhaust duct. Installation </li></ul><ul><li>should conform to NFPA Code #13. </li></ul>
    22. 22. Typical Sprinkler Arrangement From “ TECH Bulletin: Spray Booths”, Frankenmuth Insurance
    23. 23. <ul><li>FIRE PROTECTION </li></ul><ul><li>Sprinkler head coverage should not exceed </li></ul><ul><li>90 square feet per head, with a water supply </li></ul><ul><li>delivered at a pressure of 25 psi. The </li></ul><ul><li>water supply to the sprinkler heads should </li></ul><ul><li>have a separate control valve. </li></ul><ul><li>Sprinkler heads should be covered with a </li></ul><ul><li>protective covering of lightweight cellophane, </li></ul><ul><li>polyethylene or paper bags to prevent the accum- </li></ul><ul><li>ulation of overspray which would affect the </li></ul><ul><li>operation of the sprinkler head. </li></ul>
    24. 24. <ul><li>FIRE PROTECTION </li></ul><ul><li>Where there is no water available, dry </li></ul><ul><li>chemical, CO 2 , and other extinguishing </li></ul><ul><li>systems are acceptable if installed to code. </li></ul>
    25. 25. <ul><li>CONVEYORS </li></ul><ul><li>Where conveyors are arranged to carry work into or out of spray booths, the openings </li></ul><ul><li>shall be as small as practical. </li></ul>
    26. 26. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>CONFORMNCE </li></ul><ul><li>The storage of flammable or combustible </li></ul><ul><li>liquids in connection with spraying opera- </li></ul><ul><li>tions shall conform to the requirements of </li></ul><ul><li>1910.106 where practical. </li></ul>
    27. 27. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>QUANTITY STORED </li></ul><ul><li>The quantity of flammable or combustible </li></ul><ul><li>liquids allowed to be stored in the vicinity </li></ul><ul><li>of a spraying operation shall be the min- </li></ul><ul><li>imum required for operations and should </li></ul><ul><li>not exceed a supply for 1 day or one shift. </li></ul>
    28. 28. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>Bulk storage of portable containers of </li></ul><ul><li>flammable or combustible liquids shall be </li></ul><ul><li>in a separate, constructed building de- </li></ul><ul><li>tached from other important buildings or </li></ul><ul><li>cut off in a standard manner. </li></ul>
    29. 29. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>CONTAINERS </li></ul><ul><li>Original closed containers, approved port- </li></ul><ul><li>able tanks, approved safety cans or a </li></ul><ul><li>properly arranged system of piping shall be </li></ul><ul><li>used for bringing flammable or combus- </li></ul><ul><li>tible liquids into a spray finishing room. No </li></ul><ul><li>open or glass containers shall be used. </li></ul>
    30. 30. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>TRANSFERRING LIQUIDS </li></ul><ul><li>Withdrawal of liquids from containers of </li></ul><ul><li>greater than 60 gallons must be by </li></ul><ul><li>approved pump. </li></ul><ul><li>Withdrawal or transfer of flammable liquids </li></ul><ul><li>from containers and the filling of con- </li></ul><ul><li>tainers shall be done only in a suitable </li></ul><ul><li>mixing room or in a spraying area when the ven- </li></ul><ul><li>tilation system is in operation. </li></ul>
    31. 31. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>Adequate precautions shall be taken to </li></ul><ul><li>protect against liquid spillage and sources </li></ul><ul><li>of ignition. </li></ul>
    32. 32. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING </li></ul><ul><li>SPRAY NOZZLES: </li></ul><ul><li>Shall be of closed type or provided with metal covers kept closed. </li></ul><ul><li>Shall either rest on floor, be on metal </li></ul><ul><li>supports or suspended by wire cables. </li></ul>
    33. 33. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING </li></ul><ul><li>SPRAY NOZZLES: </li></ul><ul><li>Shall not exceed 10 gallons capacity if </li></ul><ul><li>feeding nozzles by gravity flow. </li></ul><ul><li>Original shipping containers shall not be </li></ul><ul><li>subject to air pressure for supplying spray </li></ul><ul><li>nozzles. (DON’T PRESSURIZE SHIPPING </li></ul><ul><li>CONTAINER). </li></ul>
    34. 34. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING </li></ul><ul><li>SPRAY NOZZLES: </li></ul><ul><li>Containers under air pressure shall be of </li></ul><ul><li>limited capacity and shall not exceed that </li></ul><ul><li>necessary for 1 day’s operation, shall be </li></ul><ul><li>designed and approved for such use, shall </li></ul><ul><li>be provided with a visible pressure gage and </li></ul><ul><li>shall be provided with a relief valve. </li></ul>
    35. 35. <ul><li>STORAGE AND HANDLING OF FLAMMABLE AND COMBUSTIBLE LIQUIDS </li></ul><ul><li>SPRAYING CONTAINERS SUPPLYING </li></ul><ul><li>SPRAY NOZZLES: </li></ul><ul><li>Containers under air pressure supplying </li></ul><ul><li>spray nozzles, air-storage tanks and </li></ul><ul><li>coolers must conform to the standards of </li></ul><ul><li>The Code for Unfired Pressure Vessels, </li></ul><ul><li>Section VIII of the ASME Boiler and Pressure </li></ul><ul><li>Vessel Code – 1968 for construction, tests and </li></ul><ul><li>maintenance. </li></ul>
    36. 36. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Spraying – Spraying shall not be conducted </li></ul><ul><li>outside of predetermined spraying areas. </li></ul><ul><li>Cleaning – All spraying areas shall be kept </li></ul><ul><li>as free from the accumulation of deposits </li></ul><ul><li>of combustible residues as practical, with </li></ul><ul><li>cleaning conducted daily if necessary. </li></ul><ul><li>Scrapers, spuds, or other such tools used </li></ul><ul><li>for cleaning must be made of nonsparking </li></ul><ul><li>material. </li></ul>
    37. 37. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Residue Disposal – Residue scrapings and </li></ul><ul><li>other debris contaminated with residue </li></ul><ul><li>shall be immediately removed from the </li></ul><ul><li>premises and properly disposed of. </li></ul><ul><li>Approved metal waste cans shall be pro- </li></ul><ul><li>vided wherever rags or waste are impreg- </li></ul><ul><li>nated with finishing material and all rags </li></ul><ul><li>or wastes deposited in the cans after use. </li></ul><ul><li>The contents of the waste cans shall be properly </li></ul><ul><li>disposed of at least once daily or at the end of </li></ul><ul><li>each shift. </li></ul>
    38. 38. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Clothing Storage – Spray finishing em- </li></ul><ul><li>ployees’ clothing shall not be left on the </li></ul><ul><li>premises overnight unless kept in metal </li></ul><ul><li>lockers. </li></ul>
    39. 39. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Cleaning Solvents – Use of solvents for </li></ul><ul><li>cleaning operations is restricted to those </li></ul><ul><li>having flashpoints of not less than 100 o F. </li></ul><ul><li>For cleaning spray nozzles and auxiliary </li></ul><ul><li>equipment, solvents having flashpoints </li></ul><ul><li>not less than those normally used in spray </li></ul><ul><li>operations may be used. Cleaning shall </li></ul><ul><li>be done in spray booths with the venti- </li></ul><ul><li>lation equipment running during cleaning. </li></ul>
    40. 40. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>Hazardous Materials Combinations – </li></ul><ul><li>Spray booths shall not be alternately used </li></ul><ul><li>for different types of coating materials </li></ul><ul><li>where the combination of materials may be </li></ul><ul><li>conducive to spontaneous ignition, unless </li></ul><ul><li>all deposits of the first material used are </li></ul><ul><li>removed from the booth and exhaust ducts </li></ul><ul><li>prior to spraying with the second material. </li></ul>
    41. 41. <ul><li>OPERATIONS AND MAINTENANCE </li></ul><ul><li>“ No Smoking” signs in large letters on </li></ul><ul><li>contrasting color background shall be </li></ul><ul><li>conspicuously posted at all spraying </li></ul><ul><li>areas and paint storage rooms. </li></ul>
    42. 42. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>CONFORMANCE </li></ul><ul><li>Installation and use shall conform to all </li></ul><ul><li>requirements of 1910.107 and to the special </li></ul><ul><li>requirements for fixed electrostatic </li></ul><ul><li>apparatus. </li></ul>
    43. 43. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrostatic apparatus and devices must </li></ul><ul><li>be of approved types. </li></ul><ul><li>Transformers, power packs, control </li></ul><ul><li>apparatus, and all other electrical portions </li></ul><ul><li>of the equipment, with the exception of </li></ul><ul><li>high-voltage grids, electrodes, and electro- </li></ul><ul><li>static atomizing heads and their connec- </li></ul><ul><li>tions shall either be located outside the spraying </li></ul><ul><li>area or conform to the electrical requirements of </li></ul><ul><li>paragraph (c). </li></ul>
    44. 44. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrodes and electrostatic atomizing </li></ul><ul><li>heads must be adequately supported in </li></ul><ul><li>permanent locations and effectively in- </li></ul><ul><li>sulated from the ground. Insulators must </li></ul><ul><li>nonporous and noncombustible. </li></ul><ul><li>High-voltage leads to electrodes must be </li></ul><ul><li>properly insulated and protected from </li></ul><ul><li>mechanical injury or exposure to destructive </li></ul><ul><li>chemicals. </li></ul>
    45. 45. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>A safe distance must be maintained be- </li></ul><ul><li>tween goods being painted and electrodes </li></ul><ul><li>or electrostatic atomizing heads or con- </li></ul><ul><li>ductors of at east twice the sparking dis- </li></ul><ul><li>tance. A sign shall be posted indicating </li></ul><ul><li>safe distnce. </li></ul>
    46. 46. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Goods being painted using this process </li></ul><ul><li>must be transported by conveyor and a </li></ul><ul><li>safe distance must be maintained be- </li></ul><ul><li>the goods and the electrodes or atomizing </li></ul><ul><li>heads. </li></ul>
    47. 47. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>PROHIBITED : This process is not accep- </li></ul><ul><li>table where goods being coated are manip- </li></ul><ul><li>ulated by hand. </li></ul>
    48. 48. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Electrostatic apparatus shall be equipped </li></ul><ul><li>with automatic controls that will operate </li></ul><ul><li>without time delay to disconnect the power </li></ul><ul><li>supply to the high voltage transformer and </li></ul><ul><li>to signal the operator for any of the </li></ul><ul><li>following conditions: </li></ul>
    49. 49. <ul><li>Failure of ventilating equipment for any </li></ul><ul><li>cause. </li></ul><ul><li>Stoppage of the conveyor carrying goods </li></ul><ul><li>through the high voltage field. </li></ul><ul><li>Occurrence of a ground or of an imminent </li></ul><ul><li>ground at any point on the high voltage </li></ul><ul><li>system. </li></ul><ul><li>Reduction of the safe distance to below that </li></ul><ul><li>specified. </li></ul>
    50. 50. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>GUARDING </li></ul><ul><li>Equipment must be guarded by adequately </li></ul><ul><li>grounded conductive material. Guarding must </li></ul><ul><li>effectively isolate the process from plant </li></ul><ul><li>storage or personnel. </li></ul>
    51. 51. <ul><li>FIXED ELECTROSTATIC APPARATUS </li></ul><ul><li>Ventilation. The ventilation system must </li></ul><ul><li>insure safe conditions from a fire and </li></ul><ul><li>health standpoint. </li></ul><ul><li>Fire Protection. All areas used for spraying, </li></ul><ul><li>including the interior of the booth must be </li></ul><ul><li>protected by automatic sprinklers or other </li></ul><ul><li>approved automatic extinguishing equipment. </li></ul>
    52. 52. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>This includes any equipment using electro- </li></ul><ul><li>statically charged elements for the atomization </li></ul><ul><li>and/or precipitation of materials for coatings </li></ul><ul><li>on articles or for other similar purposes in </li></ul><ul><li>which the atomizing device is hand held and </li></ul><ul><li>manipulated during the spraying operation. </li></ul>
    53. 53. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>CONFORMANCE </li></ul><ul><li>Electrostatic hand spraying equipment must </li></ul><ul><li>conform to all provisions of the standard. </li></ul>
    54. 54. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Equipment Approval And Specifications: </li></ul><ul><li>Equipment must b of approved types. </li></ul><ul><li>High voltage circuits must not produce a </li></ul><ul><li>spark of sufficient intensity to ignite any </li></ul><ul><li>vapor-air mixtures or result in an </li></ul><ul><li>appreciable shock if coming in ground con- </li></ul><ul><li>tact. </li></ul>
    55. 55. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Equipment Approval And Specifications: </li></ul><ul><li>The electrostatically charged exposed ele- </li></ul><ul><li>ments of the handgun shall be capable of </li></ul><ul><li>being energized only by a switch that also </li></ul><ul><li>controls the coating material supply. </li></ul>
    56. 56. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Electrical Support Equipment: </li></ul><ul><li>All electrical equipment with the exception </li></ul><ul><li>of the handgun and its connections to the </li></ul><ul><li>power supply shall be located outside the </li></ul><ul><li>spraying area or be in compliance with </li></ul><ul><li>paragraph (c) of this standard. </li></ul>
    57. 57. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Grounding </li></ul><ul><li>All electrically conductive objects in the </li></ul><ul><li>spraying area must be grounded. </li></ul><ul><li>Warnings regarding the necessity of </li></ul><ul><li>grounding must be permanently affixed to </li></ul><ul><li>the equipment. </li></ul>
    58. 58. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Maintenance of Grounds </li></ul><ul><li>Objects being painted or coated must be </li></ul><ul><li>maintained in metallic contact with the </li></ul><ul><li>conveyor or other grounded support. </li></ul><ul><li>Hooks shall have knife edges where </li></ul><ul><li>possible. </li></ul>
    59. 59. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Interlocks </li></ul><ul><li>The electrical equipment is to be inter- </li></ul><ul><li>locked with the ventilation of the spraying </li></ul><ul><li>area so that the equipment cannot be </li></ul><ul><li>operated unless the ventilation fans are in </li></ul><ul><li>operation. </li></ul>
    60. 60. <ul><li>ELECTROSTATIC HAND SPRAYING </li></ul><ul><li>EQUIPMENT </li></ul><ul><li>Ventilation </li></ul><ul><li>The spraying operation shall take place </li></ul><ul><li>within an adequately ventilated spraying </li></ul><ul><li>area. </li></ul>
    61. 61. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Conformance: </li></ul><ul><li>Drying, curing, or fusion apparatus used in </li></ul><ul><li>conjunction with the spray application of </li></ul><ul><li>flammable or combustible finishes must con- </li></ul><ul><li>form to the Standard for Ovens and Furnaces, </li></ul><ul><li>NFPA 86A-1969, which is incorporated by </li></ul><ul><li>reference into OSHA standards. </li></ul>
    62. 62. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Prohibition of Alternate Use </li></ul><ul><li>Spray booths, rooms, or other enclosures used </li></ul><ul><li>for spraying shall not be alternately used for </li></ul><ul><li>the purpose of drying by any arrangement that </li></ul><ul><li>will cause a material increase in the surface </li></ul><ul><li>temperature of the spray booth, room or en- </li></ul><ul><li>closure. </li></ul>
    63. 63. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Adjacent Systems Interlocked </li></ul><ul><li>Drying, curing, or fusion systems utilizing an </li></ul><ul><li>open flame heating system or one that may </li></ul><ul><li>produce sparks may be installed adjacent to a </li></ul><ul><li>spraying area when equipped with an inter- </li></ul><ul><li>locked ventilation system that can: </li></ul>
    64. 64. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Thoroughly ventilate the drying space </li></ul><ul><li>before the heating system can be started. </li></ul><ul><li>Maintain a safe atmosphere at any source </li></ul><ul><li>of ignition. </li></ul><ul><li>Automatically shut down the heating </li></ul><ul><li>system in the event of failure of the venti- </li></ul><ul><li>ating system. </li></ul>
    65. 65. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Permitted Alternate Use </li></ul><ul><li>Automobile refinishing spray booths that are </li></ul><ul><li>otherwise in full conformity with this standard </li></ul><ul><li>may be alternately used for drying with port- </li></ul><ul><li>able infrared drying apparatus under the </li></ul><ul><li>following conditions: </li></ul>
    66. 66. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>Interiors of spray areas must be kept free </li></ul><ul><li>of overspray deposits. </li></ul><ul><li>During spraying operations, the drying </li></ul><ul><li>apparatus and electrical connections for </li></ul><ul><li>wiring cannot be located in the spray en- </li></ul><ul><li>closure or in any other location where spray </li></ul><ul><li>residues may be deposited on the drying </li></ul><ul><li>apparatus or electrical connections. </li></ul>
    67. 67. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>The spraying and drying apparatus and the </li></ul><ul><li>ventilation system of the spray enclosure </li></ul><ul><li>must be equipped with suitable interlocks </li></ul><ul><li>so that: </li></ul><ul><ul><ul><li>1. The spraying apparatus can’t be operated while the drying apparatus is in the spray enclosure. </li></ul></ul></ul>
    68. 68. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>2. The spray enclosure will be purged of </li></ul><ul><li>spray vapors for a period of not less </li></ul><ul><li>than 3 minutes before the drying </li></ul><ul><li>apparatus can be energized. </li></ul><ul><li>3. The ventilating system will maintain a </li></ul><ul><li>safe atmosphere within the enclosure </li></ul>
    69. 69. <ul><li>during the drying process and the </li></ul><ul><li>drying apparatus will automatically </li></ul><ul><li>shut off in the event of the failure of </li></ul><ul><li>the ventilating system. </li></ul>
    70. 70. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>All electrical wiring and equipment must con- </li></ul><ul><li>form to the requirements of Subpart S (Elec- </li></ul><ul><li>trical). Only equipment approved for Class I, </li></ul><ul><li>Division 2 hazardous locations can be located </li></ul><ul><li>within 18 inches of the floor level. All metallic </li></ul><ul><li>parts shall be properly electrically bonded and </li></ul><ul><li>grounded. </li></ul>
    71. 71. <ul><li>DRYING, CURING, OR FUSION APPARATUS </li></ul><ul><li>The drying apparatus shall contain a prom- </li></ul><ul><li>inently located, permanently attached warning </li></ul><ul><li>sign stating that ventilation should be main- </li></ul><ul><li>tained during the drying period and that </li></ul><ul><li>spraying should not be conducted so that </li></ul><ul><li>spray will deposit on apparatus. </li></ul>
    72. 72. <ul><li>Automobile Undercoating in Garages </li></ul><ul><li>Automobile undercoating spray operations in </li></ul><ul><li>garages that have adequate ventilation are </li></ul><ul><li>exempt from the requirements pertaining to </li></ul><ul><li>spray finishing operations when using under- </li></ul><ul><li>coating materials not any more hazardous </li></ul><ul><li>than kerosene or using only solvents having a </li></ul><ul><li>flash point of greater than 100 o . </li></ul>
    73. 73. <ul><li>POWDER COATING </li></ul><ul><li>Electrical and other sources of ignition. </li></ul><ul><li>Electrical equipment and other sources of </li></ul><ul><li>ignition must conform to both this section </li></ul><ul><li>and to Subpart S. </li></ul><ul><li>Exhaust ventilation must be sufficient to </li></ul><ul><li>maintain the atmosphere below the lowest </li></ul><ul><li>explosive limits for the materials being </li></ul><ul><li>applied. </li></ul>
    74. 74. <ul><li>POWDER COATING </li></ul><ul><li>All nondeposited air-suspended powders </li></ul><ul><li>must be safely removed by exhaust ducts </li></ul><ul><li>to the powder recovery cyclone or re- </li></ul><ul><li>ceptacle. </li></ul><ul><li>Powders shall not b released to the out- </li></ul><ul><li>side atmosphere. </li></ul>
    75. 75. <ul><li>POWDER COATING </li></ul><ul><li>The provisions of the Standard for ovens </li></ul><ul><li>and furnaces, NFPA No. 86A-1969 shall </li></ul><ul><li>apply to drying, curing, or fusion quipmnt. </li></ul><ul><li>All areas shall be kept free of accumu- </li></ul><ul><li>lations of powder coating dusts. </li></ul><ul><li>Surfaces shall be cleaned in a manner to avoid </li></ul><ul><li>scattering dusts or creating dust clouds. </li></ul>
    76. 76. <ul><li>POWDER COATING </li></ul><ul><li>“ No Smoking” signs in large areas on con- </li></ul><ul><li>trasting color backgrounds shall be </li></ul><ul><li>conspicuously posted at all powder coating </li></ul><ul><li>areas and powder storage rooms. </li></ul>
    77. 77. <ul><li>POWDER COATING </li></ul><ul><li>Fixed Electrostatic Spraying Equipment </li></ul><ul><li>Shall conform to requirements of paragraph </li></ul><ul><li>(h) and Subpart S. </li></ul>
    78. 78. <ul><li>POWDER COATING </li></ul><ul><li>Electrostatic Hand Spraying Equipment </li></ul><ul><li>Shall conform to the requirements of </li></ul><ul><li>paragraph (i) and Subpart S. </li></ul>
    79. 79. <ul><li>POWDER COATING </li></ul><ul><li>Electrostatic Fluidized Beds </li></ul><ul><li>Shall be of approved typs. </li></ul><ul><li>Maximum surface temperature of this eq- </li></ul><ul><li>ment in the coating area must not exceed </li></ul><ul><li>150 o F. </li></ul><ul><li>High voltage circuits may not produce a </li></ul><ul><li>spark of sufficient intensity to ignite any </li></ul><ul><li>powder-air mixtures. </li></ul>
    80. 80. <ul><li>POWDER COATING </li></ul><ul><li>All electrical portions of the equipment </li></ul><ul><li>with the exception of the charging elec- </li></ul><ul><li>trodes and their power supply connections </li></ul><ul><li>shall be located outside of the powder </li></ul><ul><li>coating area. </li></ul><ul><li>All electrically conductive objects within </li></ul><ul><li>the charging influence of the electrodes </li></ul><ul><li>shall be adequately grounded. Warning signs </li></ul><ul><li>shall be displayed. </li></ul>
    81. 81. <ul><li>POWDER COATING </li></ul><ul><li>Objects being coated must be in contact </li></ul><ul><li>with the conveyor or other support to in- </li></ul><ul><li>sure proper grounding. Hangers shall be </li></ul><ul><li>regularly cleaned to insure effective con- </li></ul><ul><li>tact and areas of contact shall be sharp </li></ul><ul><li>points or knife edges where possible. </li></ul>
    82. 82. <ul><li>POWDER COATING </li></ul><ul><li>The electrical system shall be interlocked </li></ul><ul><li>with the ventilation system so that the </li></ul><ul><li>equipment cannot be operated unless the </li></ul><ul><li>ventilation fans are in operation. </li></ul>
    83. 83. <ul><li>ORGANIC PEROXIDES AND DUAL </li></ul><ul><li>COMPONENT COATING </li></ul><ul><li>All spraying operations involving the use of </li></ul><ul><li>organic peroxides and other dual com- </li></ul><ul><li>ponent coatings shall be conducted in </li></ul><ul><li>approved sprinklered spray booths that </li></ul><ul><li>meet the requirements of this section. </li></ul>
    84. 84. <ul><li>ORGANIC PEROXIDES AND DUAL </li></ul><ul><li>COMPONENT COATING </li></ul><ul><li>Smoking shall be prohibited and “No </li></ul><ul><li>Smoking” signs shall be prominently dis- </li></ul><ul><li>played. </li></ul><ul><li>Only nonsparking tools shall be used in </li></ul><ul><li>any area where orgaic peroxides are stored, </li></ul><ul><li>mixed, or applied. </li></ul>
    85. 85. <ul><li>RFERENCES </li></ul><ul><li>(1) NFPA 33, Standard for Spray Application </li></ul><ul><li>Using Flammable or Combustible Materials, 2000 Edition </li></ul><ul><li>(2) TECH Bulletin: Spray Booths, </li></ul><ul><li>Frankenmuth Insurance </li></ul><ul><li>(3) NFPA 86, Standard for Ovens and </li></ul><ul><li>Furnaces, 2000 Edition (Update of 86A-1969) </li></ul>

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