jswizzle3737/ontario_laws_and_regs huggingface dataset:
5.10.1.2. (1) Building and machinery surfaces shall be kept clean of accumulations of combustible dusts using cleaning equipment that  (a)  is made of materials that will not create electrostatic charges or sparks, (b)  is electrically conductive and bonded to ground, and (c)  except as permitted in Sentence (3), removes the dust to a safe location by vacuum. (2) When used in atmospheres containing combustible dusts, the cleaning equipment required in Sentence (1) shall be listed
and labelled for use in atmospheres containing combustible dusts. (3) Where it is not possible to effectively remove dust by vacuum, it is permitted to use compressed air or other means which cause dust to be suspended in air during removal if, in the dust removal area, (a)  all sources of ignition are eliminated, and (b)  all machinery and equipment is de-energized, unless such equipment is listed and labelled for use in atmospheres containing combustible dusts. Dust containment
5.10.1.3. (1) Machinery that produces, agitates or conveys combustible dusts
shall (a)  have dust-tight casings or enclosures, and (b)  be connected to a dust-collecting system that exhausts to the outside, subject to Sentence 5.10.1.5.(3). Construction of dust-collecting equipment
5.10.1.4. (1) Dust-collecting systems shall be made of noncombustible material. (2) Dust-collecting systems shall be of a design which will prevent sparks due to physical contact in the fan assembly. Location
5.10.1.5. (1) Except as provided in Sentences (2) and (5), a dust collector shall be located outside of a building. (2) A dust collector is permitted to be located inside a building if it is (a)  provided with explosion venting to the outdoors in conformance with NFPA 68, “Standard on Explosion Protection by Deflagration Venting”, (b)  equipped with an automatic explosion prevention system, or (c)  located in a room (i)  with fire separations having a fire-resistance rating not less than 1 h, (ii)  provided with explosion venting to the outdoors, and (iii)  used solely for the housing of dust-collecting equipment. (3) Except for dust collectors described in Sentence (5), when air exhausted by a dust collector is returned to a building, the dust-collecting system shall be designed so that (a)  returned air will not create an explosion hazard inside the building, and (b)  the exhaust fan and ancillary equipment are automatically shut down in the event of a fire or an explosion inside the dust collector. (4) Explosion venting to the outdoors is deemed to comply with Clause (2)(a) if the venting (a)  was installed on or before November 21, 2007, and (b)  provides not less than 0.1 m2
of vent area for each cubic metre of dust collector enclosure volume. (5) Sentences (1) and (2) do not apply to dust collectors having a capacity of less than 0.47 m3/s and used on wood working operations, except for wood flour manufacturing. Grounding
5.10.1.6. Electrically-conducting parts of duct systems, dust collectors and the machines they serve shall be grounded. Explosion venting
5.10.1.7. (1) Except as provided in Article 5.10.1.8., an activity that creates an explosive atmosphere of combustible dusts shall be located only in a building provided with explosion venting to the outdoors. (2) When explosion venting is required in this Section, it shall be designed to prevent critical structural and mechanical damage to the building in conformance with NFPA 68, “Standard on Explosion Protection by Deflagration Venting”. Explosion prevention system
5.10.1.8. (1) In processes where an explosion hazard is present and conditions exist that prevent adequate explosion venting as required in this Section, an explosion prevention system shall be provided. (2) When an explosion prevention system is required in this Section, it shall be designed in conformance with NFPA 69, “Standard on Explosion Prevention Systems”. Interlocks
5.10.1.9. Equipment required to have a dust-collecting system shall be interlocked to prevent it from operating if the dust-collecting system is not in operation. Air velocity
5.10.1.10. Dust-collecting systems shall be designed for an air velocity in the ducts of at least 1068 m/min. Vent stacks
5.10.1.11. (1) Permanently open vent stacks may be used to ventilate storage containers where mechanical dust-collecting systems are not practical, provided that the vent stacks (a)  have a cross-sectional area not less than twice that of spouts discharging into the container, (b)  are installed not more than 30 degrees from the vertical, (c)  extend from the top of the container to a point not less than 1.2 m above the roof, and (d)  are designed to prevent the entry of snow and rain. Separators
5.10.1.12. Magnetic or pneumatic separators shall be installed to prevent the entrance of foreign materials that may cause sparks in equipment such as shellers, crackers, crushers, grinding machines, pulverizers or similar machines that produce combustible dusts. Grounding
5.10.1.13. Machinery and metal parts of the equipment in Article 5.10.1.12. and related conveying systems shall be electrically grounded. Ignition sources prohibited
5.10.1.14. Smoking shall not take place and open flame and spark-producing equipment shall not be used in areas containing combustible dust producing operations. Subsection 5.10.2. Woodworking Operations Exhaust systems
5.10.2.1. Every machine that produces sawdust, particles or shavings shall be provided with a blower and exhaust system installed in accordance with NFPA 91, “Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible Particulate Solids”. Operations that produce sparks or combustible vapours
5.10.2.2. (1) A machine that produces sawdust, particles or shavings shall not be used in an operation that generates sparks or combustible vapours. (2) An exhaust system shall not serve an operation that generates sparks or combustible vapours. Disposal
5.10.2.3. Loose sawdust, particles or shavings shall be swept up at frequent intervals and deposited in receptacles described in Sentence 2.4.1.3.(3). Portable extinguishers
5.10.2.4. A portable extinguisher that complies with Subsection 6.2.6. or a garden-type hose shall be provided within 7.5 m of any machine that produces sawdust, particles or shavings. SECTION 5.11 HOT SURFACE APPLICATIONS Subsection 5.11.1. Application Application
5.11.1.1. This Section applies to hot surface applications, in or on buildings, that use open flame torches, bitumen kettles or other heat-producing devices. Subsection 5.11.2. General Exposed combustible materials
5.11.2.1. (1) If there is a possibility of sparks, flames or heat igniting combustible materials as a result of hot surface applications (a)  combustibles within 5 m of the hot surface application shall be protected against ignition, and (b)  openings in roofs, parapets or other building structures within 5 m of hot surface applications shall be covered or closed to prevent the passage of sparks or flames to adjacent areas. (2) If it is not possible to cover or close openings described in Clause (1)(b), combustibles in the area exposed by the opening shall be protected against ignition. Open flame torches
5.11.2.2. (1) An open flame torch shall only be applied to materials intended for hot surface applications and shall not directly expose (a)  combustible materials, such as wood roof decks, cant strips, insulation and flashing, (b)  voids, holes and skylights in the roof or roof deck, or (c)  gas lines and electrical cables. Bitumen kettles
5.11.2.3. (1) Bitumen kettles shall (a)  not be located in a building or on a roof of a building, (b)  not be located in a fire access route, (c)  not be located within 3 m of a building exit or means of egress, (d)  be provided with metal lids that are close-fitting and constructed of steel having a thickness of not less than No. 14 sheet metal gauge (2 mm), (e)  be maintained free of excessive residue, and (f)  when in operation (i)  be level, with most of the weight off the tires and legs, (ii)  not be heated above 260ºC, (iii)  be kept clear of combustible debris or materials, and (iv)  be under constant supervision by a person who is knowledgeable of operations and hazards and trained in the use of portable extinguishers. (2) Despite Sentence (1), bitumen kettles may be located on concrete roofs if roof openings within 15 m are diked to prevent spilled asphalt run-off.
5.11.2.4. (1) After each daily use, mops that have been used for spreading bitumen shall be kept in a safe location (a)  at least 3 m away from buildings, and (b)  isolated from other combustibles. Firewatch
5.11.2.5. (1) A firewatch shall be provided whenever an open flame torch or other ignition source is used for hot surface applications in or on a building
and shall include (a)  any area where combustible materials used in building construction or contents are located within 5 m of persons using an open flame torch or other ignition source, (b)  any area of the building
exposed as a result of unprotected roof or wall openings located within 5 m of persons using an open flame torch or other ignition source, and (c)  any area where combustibles on the underside of roofs or the opposite side of walls might be ignited as a result of persons using an open flame torch or other ignition source. (2) If a firewatch is required, the areas shall be toured by firewatch personnel at least once each hour. (3) Facilities shall be provided to enable the firewatch personnel to (a)  ensure that a fire warning is sounded to notify occupants, and (b)  communicate with the fire department. (4) The firewatch personnel shall be equipped with portable illumination and protective equipment. (5) A firewatch shall be conducted from the beginning of a hot surface application until (a)  at least 3 hours after the application ceases, or (b)  at least 2 hours after the application ceases if a hand-held thermal scanner is used to assist in detecting hidden hot spots. Portable extinguishers
5.11.2.6. (1) Portable extinguishers with a minimum rating of 4A:40B:C shall be (a)  located within 6 m of persons using an open flame torch or other ignition source, and (b)  readily available to all other persons in the area of hot surface applications and firewatch personnel. (2) Portable extinguishers with a minimum rating of 4A:40B:C shall be located no further than 7.6 m and no closer than 1.5 m from a bitumen kettle. SECTION 5.12 SPRAY APPLICATIONS USING FLAMMABLE AND COMBUSTIBLE MATERIALS Subsection 5.12.1.  Application and Separation Application
5.12.1.1. (1) This Section applies to spray operations involving the use of flammable liquids, combustible liquids or combustible dry powders. (2) Despite Sentence (1), this Section does not apply to spray operations that comply with Articles 5.1.3.1. and 5.12.1.2. and the design, operation and maintenance requirements in NFPA 33, “Standard for Spray Application Using Flammable or Combustible Materials”. Separation for spray operations
5.12.1.2. If a spray operation is a major occupancy in a building, the spray operation shall be separated from the remainder of the building in accordance with Article 3.1.3.1. of Division B of the Building Code. Subsection 5.12.2. Construction General
5.12.2.1. (1) Spray booths and spray rooms shall have walls and ceilings that consist of steel frames covered with sheet steel having a minimum thickness of 1.14 mm or be of equivalent noncombustible construction. (2) Walls and ceilings of
spray rooms that are susceptible to paint residue accumulations and interior surfaces of spray booths shall be smooth and continuous. (3) Floors of spray booths and spray rooms and the operator’s working area shall be of noncombustible materials. Baffle plates
5.12.2.2. (1) Spray booth baffle plates shall be of noncombustible material and be removable or arranged to facilitate cleaning. (2) Spray booth baffle plates shall not be located in exhaust ducts. Overspray collection
5.12.2.3. (1) Spray booths and spray rooms
shall be provided with overspray collection, such as filters or water wash, to prevent the build-up of combustible deposits on the exhaust fan and ductwork. (2) Where filters are used as for overspray collection, supports and holders for the filters shall be constructed of noncombustible materials. (3) Overspray collection filters shall be readily removable or accessible for cleaning or replacement. (4) Filters shall not be alternately used for different types of coating materials if the combination of materials might result in spontaneous heating or ignition. (5) Maintenance procedures shall be established to ensure that overspray collection filters are replaced before excessive restriction to airflow occurs. (6) Overspray collectors shall be inspected after each period of use and clogged filters shall be discarded and replaced. (7) A water-wash filtration system shall be used when applying materials known to be highly susceptible to spontaneous heating or spontaneous ignition. Fan blades and casings
5.12.2.4. Fan blades and casings in exhaust blowers for spray booths and spray rooms shall be non‑ferrous, or the fan shall be constructed so that a movement of the wheel or shaft will not cause two ferrous parts of the fan to rub or strike together. Subsection 5.12.3. Ventilation Ventilation
5.12.3.1. (1) Ventilation shall be provided in all spraying areas to maintain (a)  the concentration of flammable vapours at or below 25% of their lower explosive limit, and (b)  the concentration of combustible dusts at or below 50% of their minimum explosible concentration or 15g/m3 when the minimum explosible concentration cannot be established. Exhaust for spray booths
5.12.3.2. Subject to Article 5.12.3.3., the exhaust air velocity at any opening in a spray booth shall be at least 30 m/min. Exhaust for electrostatic spraying
5.12.3.3. Electrostatic spraying shall have an exhaust air velocity of at least 18 m/min at any opening in a spray booth. Combined ducting
5.12.3.4. A separate exhaust duct shall be provided for each spray booth, except that a common duct may be used if it serves spray booths
having a combined open frontal area of not more than 1.8 m2. Exhaust air
5.12.3.5. Air exhausted from spray operations shall not be recirculated, except where recirculation is acceptable, as described in NFPA 33, “Standard for Spray Application Using Flammable or Combustible Materials”. Monitoring air velocity
5.12.3.6. (1) Gauges or alarms that indicate when the air velocity is less than the air velocity required by Article 5.12.3.2. or 5.12.3.3. shall be installed for spray booths. (2) When the gauge or alarm indicates that the air velocity is less than that required by Article 5.12.3.2. or 5.12.3.3., immediate corrective action shall be taken to remedy the condition that has resulted in the reduction of the ventilation. Subsection 5.12.4. Exhaust Ducts Duct support and construction
5.12.4.1. Exhaust ducts for spray booths and spray rooms shall be securely supported and constructed of sheet steel in accordance with Table 5.12.4.A. TABLE 5.12.4.A. Forming Part of Article 5.12.4.1. Maximum Dimension of Duct   Minimum Thickness of Sheet Steel, mm 

  Up to 200 mm incl.   0.56 

  Over 200 mm to 450 mm incl.   0.69 

  Over 450 mm to 750 mm incl.   0.86 

  Over 750 mm   1.14  Clearances
5.12.4.2. Subject to Article 5.12.4.3., a clearance of 457 mm shall be maintained between unprotected combustible materials and ducts venting spray booths
and spray rooms. Collars
5.12.4.3. (1) Where exhaust ducts pass through combustible roofs or partitions, metal collars shall provide not less than a 100 mm clearance between the duct and combustible material. (2) The space between the duct and combustible material shall be sealed with noncombustible insulating material. Access doors
5.12.4.4. Exhaust ducts for spray booths and spray rooms shall be provided with access doors for cleaning purposes. Exhaust outlet locations
5.12.4.5. (1) Except for water-wash filtration systems, the exhaust outlet to atmosphere from spray booths and spray rooms shall (a)  be 1.8 m from any combustible exterior wall or roof, and (b)  be located so that the air does not discharge toward any combustible surface or unprotected opening within 7.5 m. Subsection 5.12.5. Electrical Equipment Electrical equipment
5.12.5.1. Electrical equipment within the spraying area, including lighting fixtures, shall conform to Part 1, Sections 18 and 20 of the Electrical Safety Code made under the Electricity Act, 1998. Motors for exhaust fans
5.12.5.2. Electric motors for exhaust fans shall not be placed inside spray booths,
spray rooms or ducts. Grounding
5.12.5.3. Metal parts of spray booths, exhaust ducts and piping systems conveying flammable liquids or combustible liquids
shall be electrically grounded. Subsection 5.12.6. Flammable Liquids and Combustible Liquids Storage and handling
5.12.6.1. Flammable liquids and combustible liquids for use in spraying areas shall be stored and handled in conformance with Part 4, and at no time shall the amount of flammable liquids and combustible liquids in the spraying areas exceed one day’s supply. Paint storage
5.12.6.2. Flammable liquids and combustible liquids shall be kept in closed containers
when not in use. Thinners and solvents
5.12.6.3. Thinners and solvents shall be dispensed only from listed and labelled safety cans. Pump discharge relief valves
5.12.6.4. Where flammable liquids are supplied to spray nozzles by positive displacement pumps, the pump discharge line shall be provided with a suitable relief valve discharging to the pump suction or to a safe remote location. Subsection 5.12.7. Control of Fire Hazards Interlocks
5.12.7.1. (1) The spraying equipment for spray booths and spray rooms shall be interlocked to shut down in the event of (a)  a failure of the ventilation system, (b)  a failure of the circulating water pump of a water-wash filtration system, or (c)  a failure of the filter roll-down mechanism of an overspray collection system. Cleaning and residue disposal
5.12.7.2. (1) The inner surfaces of spray booths and spray rooms shall be cleaned of combustible residue as often as necessary to prevent a fire hazard. (2) Combustible residue from cleaning operations shall, on the same day as the cleaning operations, be removed from the premises or placed in receptacles conforming to Sentence 2.4.1.3.(3). (3) Strippable coatings or removable combustible coverings, such as thin paper and static dissipative plastic sheets, may be used on walls and floors in spray booths and spray rooms to facilitate cleaning operations. Filter pads and rolls
5.12.7.3. Discarded filter pads and filter rolls shall be removed to a safe location or placed in a water-filled metal container and disposed of after each day’s operation. 5.12.7.4. RESERVED Heating equipment
5.12.7.5. Space-heating appliances, steam pipes and other hot surfaces shall not be located in an area subject to accumulation of deposits of combustible residue from spray operations. Ignition sources
5.12.7.6. Open flame or spark producing devices shall not be used within a spraying area, unless separated from the area by a vapour-tight fire separation having a fire-resistance rating not less than 1 h. Subsection 5.12.8. Fire Protection Equipment Portable extinguishers
5.12.8.1. Portable extinguishers shall be installed near spraying areas
in conformance with Section 6.2. Sprinkler installations
5.12.8.2. (1) Except as permitted in Sentences (2) and (3), automatic sprinkler protection shall be provided in each spraying area,
spray booth and spray room in conformance with NFPA 13, “Standard for the Installation of Sprinkler Systems”. (2) Where spraying operations are confined within a spray booth, fire protection may be provided for the spray booth only, in conformance with NFPA 33, “Standard for Spray Application Using Flammable or Combustible Materials”. (3) This Article does not apply where the existing situation is approved and does not endanger life safety, or approved alternative measures to the requirements set out in this Article are taken to provide life safety. Sprinkler head protection
5.12.8.3. (1) Sprinkler heads in spray booths and spray rooms shall be protected with lightweight paper bags or cellophane bags having a thickness of not more than 0.08 mm. (2) Bags protecting sprinkler heads shall be replaced before they have accumulated deposits that impair the timely operation of the sprinkler head. Subsection 5.12.9. Drying Operations Spray booths used for drying
5.12.9.1. Except as permitted in Article 5.12.9.4., spray booths, spray rooms or other enclosures used for spraying operations shall not be used for drying by any arrangement that could cause an increase in the surface temperatures of the spray booths, spray rooms or other enclosures. Location of equipment
5.12.9.2. Except as provided in Articles 5.12.9.3. and 5.12.9.4., drying or curing equipment that utilizes components capable of producing ignition, such as an open flame, a spark, or a hot surface, shall not be installed in or near a spraying area. Location near spraying area
5.12.9.3. (1) Equipment described in Article 5.12.9.2. may be installed in an area adjacent to the spraying area provided the adjacent area is equipped with a ventilating system arranged to (a)  purge the drying space before the heating system can be started, (b)  maintain the atmosphere at any source of ignition at or below 25% of the lower explosive limit of any combustible or flammable materials in use, and (c)  automatically shut down the heating system in the event of failure of the ventilating system. Spray booths used for drying
5.12.9.4. (1) Spray booths may be used for drying operations where  (a)  the spray booth
conforms to the appropriate requirements for drying ovens in Section 5.18, (b)  the interior of the enclosure is kept reasonably free of overspray deposits, (c)  portable drying apparatus, if used, is of the infrared type, and such apparatus, wiring and connections are removed from the enclosure during spraying operations, and (d)  interlocks are installed to (i)  prevent the use of spraying apparatus while the drying operation is taking place, (ii)  provide for the purging of the enclosure of spray vapours for a minimum of 3 min before the drying apparatus can be energized, (iii)  ensure that the ventilating system maintains the concentration of flammable vapours at or below 25% of the lower explosive limit within the enclosure during the drying process, and (iv)  ensure that the drying apparatus will automatically shut off in the event of failure of the ventilating system. Subsection 5.12.10.  Electrostatic Spraying Application
5.12.10.1. This Subsection applies to electrostatic spray-coating processes involving the use of flammable liquids or combustible liquids. Equipment location
5.12.10.2. (1) Electrical components, including transformers, power packs and control equipment for electrostatic spray applications, shall be located in an area where the vapour concentration of flammable liquids or combustible liquids cannot exceed 25% of the lower explosive limit. (2) Sentence (1) does not apply to high voltage grids and their connections. Interlocks
5.12.10.3 (1) Electrostatic spraying equipment shall be provided with automatic controls that will operate without a time delay to disconnect power to high voltage transformers and to signal the operator of the equipment if (a)  the air supply system, the ventilating fan or the conveyor system stops, (b)  a ground occurs at any point on the high voltage system, or (c)  any clearances are reduced below those required by Article 5.12.10.5. Insulators
5.12.10.4. Insulators shall be kept clean and dry. Clearances
5.12.10.5. A clearance space that is equivalent to twice the sparking distance shall be maintained between the articles being painted and any electrodes or conductors. Drip plates and screens
5.12.10.6. Drip plates and screens subject to paint deposits shall be removable for cleaning. Insulating and grounding
5.12.10.7. High voltage components, including atomizing heads, shall be insulated and protected against mechanical damage and accidental contact or grounding. Automatic grounding
5.12.10.8. An automatic means shall be provided for grounding the electrode system when it is de-energized. Operating distances
5.12.10.9. Items being electrostatically sprayed shall be neither held by hand nor suspended in such a manner as to reduce the proper operating distance from the atomizing heads. Distance to processing areas
5.12.10.10. Electrostatic spraying equipment shall be located 1.5 m from processing equipment and isolated from other areas by grounded guards and fences of conducting material. Surface temperatures
5.12.10.11. The surface temperature of equipment in a spraying area shall not exceed 66°C. Precautions against shock
5.12.10.12. High voltage circuits shall be designed so that any discharge will not ignite vapour-air mixtures or create a shock hazard. Spray gun energy supply
5.12.10.13. The energy supply to hand-held spray guns shall be controlled by a switch that also controls the coating material supply. Spray gun operation
5.12.10.14. Spray gun handles shall be grounded and have a metallic connection that is in direct contact with the operator’s hand during spraying. Grounding
5.12.10.15. All electrically conductive objects in a spraying area shall be grounded. Paint accumulations
5.12.10.16. Hooks and other supports for sprayed items shall be kept clean and free of paint. Warning signs
5.12.10.17. (1) Signs shall be conspicuously posted near a spraying area
that (a)  indicate the minimum clearance space required by Article 5.12.10.5., (b)  indicate the need for grounding of all electrically conductive objects in the spraying area, and (c)  contain the phrase “DANGER - Electrostatic Spray Coating Area”, or otherwise identify the spraying area
as dangerous. Fixed extinguishing equipment
5.12.10.18. Spraying areas shall be located in rooms protected by listed and labelled automatic fixed extinguishing equipment. Subsection 5.12.11. Dry Powder-Coating Using Spray Guns Application and location
5.12.11.1. (1) This Subsection applies to coating operations involving the use of combustible dry powders applied by powder spray guns or electrostatic powder spray guns. (2) Coating operations referred to in Sentence (1) shall be performed in (a)  ventilated and enclosed powder-coating rooms of noncombustible construction, or (b)  spray booths. Location of electrical equipment
5.12.11.2. With the exception of charging electrodes and their connections, transformers, power packs, control apparatus and all other electrical components shall be located outside the powder-coating area. Working temperatures
5.12.11.3. If a part to be coated is preheated prior to the application of the powder, the temperature of the part shall not exceed the ignition temperature of the powder being used. Grounding
5.12.11.4. (1) Powder transport, application and recovery equipment shall be grounded. (2) A sign shall be conspicuously posted indicating the necessity of grounding the equipment and objects identified in Sentence (1). Separators
5.12.11.5. Separators shall be used to prevent tramp iron or other spark-producing materials from being introduced into the powders being applied. Recovery systems
5.12.11.6. Waste air-suspended powders shall be removed by exhaust ducts to a powder recovery system and shall not be released to the outside atmosphere. Vacuum cleaning
5.12.11.7. Accumulations of waste dust from dry powder finishes shall be removed by vacuum cleaning equipment. Contact points
5.12.11.8. Objects being coated shall be maintained in contact with the conveyor or other support. Hangers
5.12.11.9. Hangers for objects being coated shall be kept clean and have sharp points or edges at areas of contact. Smoking prohibited
5.12.11.10. (1) Smoking shall not take place in powder-coating areas and in powder storage rooms. (2) Signs prohibiting smoking that meet the requirements of Article 2.4.3.2. shall be conspicuously posted in all powder-coating areas and powder storage rooms. SECTION 5.13 DIP TANKS Subsection 5.13.1. Location Room design
5.13.1.1. (1) If a dip tank operation involves flammable liquids or combustible liquids and the quantity of liquids exceeds 45 L or the liquid surface area exceeds 0.42 m2, the operation shall be (a)  conducted in a room designed for that purpose, and (b)  separated from the remainder of the
building by a fire separation
having a fire-resistance rating not less than 2 h. Prohibition for basements
5.13.1.2. Dip tanks shall not be located in basements. Subsection 5.13.2. Construction Floors
5.13.2.1. The floor of any room where dip tanks are located shall be made liquid-tight with material that is impervious to the liquid in the tank, have permanent curbs and be drained to a place of safe discharge. Materials
5.13.2.2. (1) Dip tanks and drain boards shall be constructed of noncombustible material with steel, reinforced concrete or masonry supports. (2) Drain boards shall be arranged to drain back to the dip tank. Height above floor
5.13.2.3. The top of a dip tank shall not be less than 150 mm above the floor of the room in which it is located. Cover construction
5.13.2.4. Dip tank covers as required in Articles 5.13.6.2. and 5.13.6.3. shall be of noncombustible materials. Cover design
5.13.2.5. Dip tank covers shall overlap the sides of the tank by 25 mm and shall have a recess or flange extending down around the tank. Cover maintenance
5.13.2.6. Dip tank covers shall be maintained in good operating condition. Subsection 5.13.3. Overflow and Drain Pipes Liquid levels
5.13.3.1. The liquid level in a dip tank shall be kept not less than 150 mm below the top of the tank. Overflow pipes
5.13.3.2. Dip tanks having a capacity in excess of 550 L or having a liquid surface area in excess of 1 m2
shall be equipped with a properly trapped overflow pipe that leads to a safe location outside the building or to a closed, vented salvage tank conforming to Subsection 5.13.4. Location of overflow
5.13.3.3. The centre line of the overflow connection to a dip tank shall be 150 mm below the top of the tank. Overflow size
5.13.3.4. Overflow pipe sizes for dip tanks shall conform to Table 5.13.3.A. TABLE 5.13.3.A. Forming Part of Article 5.13.3.4.  Size of Tank, L   Overflow Pipe Size Required, mm 

  0 - 46   50 

  47 - 160   65 

  161 - 350   75 

  351 - 700   100 

  701 - 1025   125 

  1026 - 1500   150 

  1501 and over   200 Overflow connection
5.13.3.5. Overflow pipes shall be connected to dip tanks by a flared outlet. Piping connections
5.13.3.6. Piping connections for drains and overflow lines shall be designed so as to allow for easy access to their interiors for cleaning purposes. Bottom drains
5.13.3.7. Dip tanks of over 2300 L liquid capacity shall be equipped with bottom drains capable of being operated both automatically and manually to drain the tank quickly in the event of fire. Salvage tank
5.13.3.8. Bottom drains from dip tanks shall be trapped and shall discharge to a closed, vented salvage tank. Drain size
5.13.3.9. Bottom drain sizes for dip tanks shall conform to Table 5.13.3.B. TABLE 5.13.3.B. Forming Part of Article 5.13.3.9.  Capacity of Dip Tank, L   Diameter of Bottom Drain Pipe, mm 

  2300 - 3425   75 

  3426 - 4550   100 

  4551 - 11500   125 

  11501 - 18250   150 

  18251 and over   200 Manual operation of bottom drains
5.13.3.10. Manual operation of bottom drains shall be from an accessible location not affected by a fire in or around the dip tank. Automatic pumps
5.13.3.11. Where gravity flow is not practical, automatic pumps shall be installed on drain lines from dip tanks. Pump for salvage tank
5.13.3.12. Where salvage tanks are used, pumping arrangements shall be provided for the transfer of their contents for disposal. Subsection 5.13.4. Salvage Tanks Use
5.13.4.1. Salvage tanks shall be used only for temporary storage purposes. Capacity
5.13.4.2. The capacity of a salvage tank shall be 20% greater than the capacity of the dip tank or tanks to which it is connected. Location
5.13.4.3. Salvage tanks shall be located underground outside the building, or inside a building in an enclosure separated from the remainder of the building by a fire separation having a fire-resistance rating of not less than 2 h. Vent pipes
5.13.4.4. Salvage tanks shall be provided with vent pipes that meet the requirements of Subsection 4.3.5. for aboveground storage tanks or Subsection 4.3.10. for underground storage tanks. Subsection 5.13.5. Control of Fire Hazards Ventilation
5.13.5.1. Ventilation shall be provided to confine all flammable vapour concentrations exceeding 25% of the
lower explosive limit to within 600 mm of the dip tank, drain board and freshly coated work. Interlock for dipping conveyor
5.13.5.2. Ventilating systems shall be arranged so that the failure of any ventilation fan as sensed by air flow will automatically stop the dipping conveyor systems and sound an alarm. Interlock for heating
5.13.5.3. The heating system used in drying operations shall be interlocked so that it cannot be started until the associated ventilation system is in operation. Conveyor systems
5.13.5.4. Conveyor systems utilized in conjunction with dip tanks shall be designed to stop automatically with the actuation of an automatic fixed extinguishing system or a manual fire alarm. Purging interlocks
5.13.5.5. Where there is a possible source of ignition in a drying operation, interlocks shall be installed to provide for purging before the heating system can be started and for automatic shutdown if the ventilation system should fail. Electrical installations
5.13.5.6. Where flammable liquids and combustible liquids contained in dip tanks are heated or have a flash point below 43°C, the electrical installation shall conform to the Electrical Safety Code made under the Electricity Act, 1998. Flammable and combustible liquids
5.13.5.7. (1) The storage and handling of flammable liquids and combustible liquids shall be in conformance with Part 4. (2) The total number of containers for flammable liquids and combustible liquids in a dip tank area shall not exceed that required for one day’s operations. Smoking and ignition sources prohibited
5.13.5.8. Smoking shall not take place and open flames, spark-producing devices and heated surfaces having a temperature sufficient to ignite vapours shall not be used in the vapour area of a dip tank. Signs prohibiting smoking
5.13.5.9. Signs that prohibit smoking and that conform to Article 2.4.3.2. shall be posted conspicuously in the vicinity of dip tanks. Subsection 5.13.6. Fire Protection Automatic sprinklers
5.13.6.1. Dip tanks shall be located only in rooms protected by an automatic sprinkler system installed in conformance with NFPA 13, “Standard for the Installation of Sprinkler Systems”. Tank covers and extinguishing systems
5.13.6.2. (1) Dip tanks with over 550 L capacity or with over 1 m2 liquid surface area shall be protected by (a)  a cover actuated by a device that (i)  automatically closes the cover in the event of a fire, and (ii)  permits manual operation of the cover, or (b)  an approved
automatic extinguishing system of a water spray, foam, carbon dioxide or dry chemical type. Flammable liquids or combustible liquids
5.13.6.3. Dip tanks containing either a flammable liquid or combustible liquid with a flash point less than 43°C or a heated combustible liquid giving off flammable vapours shall conform to Article 5.13.6.2. when the capacity exceeds 45 L or when the liquid surface area exceeds 0.4 m2. Portable extinguishers
5.13.6.4. Areas in the vicinity of dip tanks shall be provided with portable extinguishers in conformance with Section 6.2. SECTION 5.14 SPECIAL PROCESSES INVOLVING FLAMMABLE AND COMBUSTIBLE materials Subsection 5.14.1. Quench Tanks Location
5.14.1.1. (1) Quench tanks shall be located as far as practical from annealing, hardening and tempering furnaces. (2) Quench tanks shall not be located on or near combustible floors. Hoods and vents
5.14.1.2. Quench tanks shall be provided with a noncombustible hood and vent exhausting to the outside to prevent the accumulation and condensation of vapours from the process. Vent design
5.14.1.3. Vents for quench tanks shall conform to the requirements for flue pipes
in Section 2.6. High temperature limit switches
5.14.1.4. (1) A high temperature limit switch shall be provided to sound an alarm, shut off heat and stop conveyors when a flammable liquid or combustible liquid
reaches 28°C below its flash point in a quench tank. (2) The temperature-sensing element for the high temperature limit switch in Sentence (1) shall be located close to the surface of the liquid and be protected from damage. Electrical installations
5.14.1.5. Electrical installations conforming to the requirements for dip tanks in Article 5.13.5.6. shall be provided for quench tanks of over 1900 L capacity whose liquid surface area exceeds 2.5 m2. Air pressure
5.14.1.6. Air under pressure shall not be used to fill or agitate oil in quench tanks. Working temperatures
5.14.1.7. A quench tank shall be designed so that the maximum workload is incapable of raising the working temperature of the cooling medium to within 28°C of its flash point. Subsection 5.14.2. Flow-Coating Operations Application
5.14.2.1. (1) This Subsection applies to flow-coating operations using flammable
liquids or combustible liquids. (2) The requirements in Section 5.13 for dip tanks shall also apply to flow-coating operations described in Sentence (1). (3) The sump area and any area on which coating liquid flows shall be considered as the dip tank area. Supply
5.14.2.2. (1) Flammable liquids and combustible liquids shall be supplied by (a)  direct low pressure pumping arranged to shut down automatically by means of listed
and labelled devices in the event of fire, or (b)  a gravity tank not exceeding 45 L in capacity. Subsection 5.14.3. Roll Coating Processes Application
5.14.3.1. (1) This Subsection applies to roll-coating processes in which flammable liquids or combustible liquids are applied to products or materials by bringing them into contact with a roller that is coated with the coating liquid. (2) The requirements in Section 5.13 for dip tanks shall also apply to roll-coating processes described in Sentence (1). Grounding
5.14.3.2. (1) Rotating parts shall be grounded. (2) Static collectors shall be installed where the material being coated leaves each rotating part. Location
5.14.3.3. Operations involving materials that have been freshly coated with a liquid containing solvents having a flash point of less than 43°C shall be located in sprinklered rooms that are separated from other occupancies by fire separations having a fire-resistance rating
not less than 2 h. Subsection 5.14.4. Electrostatic Detearing Processes Application
5.14.4.1. (1) This Subsection applies to electrostatic detearing processes involving the use of flammable liquids or combustible liquids. (2) Protective finishing systems are deemed to satisfy the requirements of this Subsection if they comply with Article 5.1.3.1. and the design, operation and maintenance requirements in NFPA 33, “Standard for Spray Application Using Flammable or Combustible Materials”. Equipment location
5.14.4.2. (1) Electrical components, including transformers, power packs and control equipment for the electrostatic removal of excess coating material (detearing), shall be located in an area where the vapour concentration of flammable
liquids or combustible liquids
cannot exceed 25% of the lower explosive limit. (2) Sentence (1) does not apply to high voltage grids and their connections. Interlocks
5.14.4.3. (1) Electrostatic detearing equipment shall be provided with automatic controls that will operate without a time delay to disconnect power to high voltage transformers and to signal the operator of the equipment if (a)  the air supply system, the ventilating fan or the conveyor system stops, (b)  a ground occurs at any point on the high voltage system, or (c)  any clearances are reduced below those required by Article 5.14.4.5. Insulators
5.14.4.4. Insulators shall be kept clean and dry. Clearances
5.14.4.5. (1) A clearance space that is equivalent to twice the sparking distance shall be maintained between articles being deteared and electrodes or conductors. (2) A sign shall be conspicuously posted near the detearing area indicating the minimum clearance space required. Drip plates and screens
5.14.4.6. Drip plates and screens subject to paint deposits shall be removable for cleaning. Insulating and grounding
5.14.4.7. High voltage components shall be insulated and protected against mechanical damage and accidental contact or grounding. Automatic grounding
5.14.4.8. An automatic means shall be provided for grounding the electrode system when it is de-energized. Precautions against shock
5.14.4.9. High voltage circuits shall be designed so that any discharge will not ignite vapour-air mixtures or create a shock hazard. Subsection 5.14.5. Automobile Undercoating Spray operations
5.14.5.1. Automobile undercoating spray operations shall conform to the requirements of Section 5.12 or to the requirements in this Subsection. Undercoating materials
5.14.5.2. (1) Automobile undercoating materials shall have a flash point of not less than 37.8°C. (2) Where the flash point of an automobile undercoating is less than 60°C, it shall be applied in a work area where (a)  there are no work pits, (b)  there is a fan, that provides mechanical ventilation during the application, cleaning and drying cycles, (i)  with nonferrous blades, or so constructed that a movement of the wheel or shaft will not permit two ferrous parts of the fan to rub or strike, and (ii)  that ensures that the concentration of vapour does not exceed 25% of the lower explosive limit, (c)  air movement from the air intake and exhaust system is along the length of the vehicle being undercoated, and (d)  air is exhausted at a level approximately 1 m above the floor. Ignition sources
5.14.5.3. (1) Work stations in Article 5.14.5.2. shall have no source of ignition located within 6 m horizontally of the work area or in the area above it. (2) Signs prohibiting smoking that conform to Article 2.4.3.2. shall be posted at the outer limits of the work area. Electrical installations
5.14.5.4. Except for overhead lighting that is totally enclosed and sealed with gaskets, electrical wiring and equipment within the area of hazard described in Article 5.14.5.3. shall conform to Article 5.1.3.1. Storage and handling
5.14.5.5. The storage and handling of flammable liquids
and combustible liquids shall be in conformance with Part 4. Portable extinguishers
5.14.5.6. Portable extinguishers shall be located so that there is one portable extinguisher having a 20B:C rating immediately accessible to each work station described in Article 5.14.5.2. Refuse disposal
5.14.5.7. All areas where automobile undercoating is used shall be kept clean of undercoating deposits and refuse, which shall be placed in covered metal receptacles. Subsection 5.14.6. Dry Powder-Coating Using Fluidized Beds Application and location
5.14.6.1. (1) This Subsection applies to coating operations involving the use of combustible dry powders applied by fluidized beds or electrostatic fluidized beds. (2) Coating operations referred to in Sentence (1) shall be performed in (a)  ventilated and enclosed powder-coating rooms of noncombustible construction, or (b)  ventilated and enclosed powder-coating enclosures of noncombustible construction. (3) Protective finishing systems are deemed to satisfy the requirements of this Subsection if they comply with Article 5.1.3.1. and the design, operation and maintenance requirements in NFPA 33, “Standard for Spray Application Using Flammable or Combustible Materials”. Location of electrical equipment
5.14.6.2. With the exception of charging electrodes and their connections, transformers, power packs, control apparatus and all other electrical components shall be located outside the powder-coating area. Working temperatures
5.14.6.3. (1) Where a part to be coated is preheated prior to the application of the powder, the temperature of the part shall not exceed the ignition temperature of the powder being used. (2) The surface temperature of electrostatic fluidized bed coating areas shall not exceed 66°C. Grounding
5.14.6.4. (1) Powder transport, application and recovery equipment shall be grounded. (2) Electrically conductive objects within the charging influence of the electrodes of electrostatic fluidized beds shall be grounded. (3) A sign shall be posted indicating the necessity of grounding equipment and objects identified in Sentences (1) and (2). Electrical discharges
5.14.6.5. High voltage circuits in electrostatic fluidized beds shall be designed so that any discharge produced when the charging electrodes of the bed are approached or contacted by a grounded object will not be of sufficient intensity to ignite any powder-air mixture likely to be encountered or result in any appreciable shock hazard. Handling of spark-producing materials
5.14.6.6. Means shall be provided to prevent tramp iron or other spark-producing materials from being introduced into the powders being applied. Recovery systems
5.14.6.7. All waste air-suspended powders shall be removed by exhaust ducts to a powder recovery system and shall not be released to the outside atmosphere. Waste dust removal
5.14.6.8. Accumulations of waste dust from dry powder finishes shall be removed using the methods set out in Article 5.10.1.2. Contact points
5.14.6.9. Objects being coated shall be maintained in contact with the conveyor or other support. Hangers
5.14.6.10. Hangers for objects being coated shall be kept clean and have sharp points or edges at areas of contact. Smoking prohibited
5.14.6.11. (1) Smoking shall not take place in powder-coating areas and in powder storage rooms. (2) Signs prohibiting smoking that conform to Article 2.4.3.2. shall be conspicuously posted at all powder-coating areas and powder storage rooms. Subsection 5.14.7. Organic Peroxides and Dual Component Coatings Location of spraying operations
5.14.7.1. Spraying operations involving the use of organic peroxides and other dual component coatings shall be conducted in sprinklered spray booths
as described in Sentence 5.12.8.2.(1). Initiator storage
5.14.7.2. Organic peroxide initiators shall be stored so that they will be kept away from contact with other stored materials. Handling equipment
5.14.7.3. Handling equipment, including spray guns, which is specifically designed for use with organic peroxides shall be used to apply such coatings. Containers
5.14.7.4. Separate containers shall be used exclusively for the storage of resin and organic peroxide. Pressure tank inserts
5.14.7.5. Organic peroxide pressure tank inserts shall be constructed of stainless steel, polyethylene or a material that is equally inert to organic peroxide. Elimination of foreign materials
5.14.7.6. Precautions shall be taken to prevent any mixing of foreign materials with dusts or overspray residues resulting from the sanding or spraying of finishing materials containing organic peroxides. Subsection 5.14.8. Floor Finishing Application
5.14.8.1. Floor finishing operations involving the use of flammable liquids or combustible liquids shall conform to Part 4 and this Subsection. Operations below grade
5.14.8.2. Floor finishing operations involving the use of flammable liquids
shall not be performed below grade. Public access
5.14.8.3. Any part of a building where floor finishing operations are done shall not be open to the public. Ventilation
5.14.8.4. (1) Ventilation shall be provided in areas where floor finishing operations are done to prevent the accumulation of flammable vapours. (2) Ventilation required in Sentence (1) is permitted to be provided by mechanical systems if their use does not constitute a source of ignition. Prohibited activities during flammable liquid application
5.14.8.5. (1) During the application of flammable liquids and for at least 1 h after such application (a)  all mechanical systems, electric motors, and other equipment that might be a source of ignition shall be shut down, (b)  smoking shall not take place, and (c)  open flames shall not be used. Waste receptacles
5.14.8.6. A receptacle conforming to Sentence 2.4.1.3.(3) shall be provided for all waste rags and materials used in operations involving flammable liquids or combustible liquids, and the contents shall be removed daily and disposed of in a manner that will not create a fire hazard. Subsection 5.14.9. Bowling Alleys Application