National Fire Code of Canada

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1 National Fire Code of Canada Fourth Revisions and Errata ssued by the Canadian Commission on Building and Fire Codes National Research Council of Canada Ottawa January 994 The attached pages identify revisions and errata to the National Fire Code of Canada 990. The revisions have been approved by the Canadian Commission on Building and Fire Codes for immediate release. n accordance with the CCBFC Policies and Procedures, the list of referenced documents in Table..6.A. of the 990 NFC is updated annually. The revisions contained herein include updates to 30 June 993. Where significant changes to the title or the issuing body have been made, the relevant requirements have also been updated. The errata are corrections which have been identified and are included to facilitate the use of the Code. Revisions are identified by an r in the margin nearest the change; r4 designates a revision issued in January 994. Errata are identified by an e.

2 994 fourth revisions and errata Table..6.A.

3 Part Application and Definitions Section. Application General.... Responsibility. Unless otherwise specified, the owner or the owner's authorized agent shall be respoilsible for carrying out the provisions of this Code..2 Equivalents..2.. Materials, Systems and Equipment () The provisions of this Code are not intended to limit the appropriate use of materials, systems and equipment not specifically described herein. (2) Materials, systems, equipment and procedures not specifically described herein or that vary from the specific requirements in this Code or for which no recognized test procedure has been established may be used if it can be shown that they are suitable on the basis of past performance, or on the basis of fl~-c-~'ptfl~7 tests or evaluation. (3) Where no published test method exists, any test submitted to determine equivalency shall be designed to simulate or exceed anticipated service conditions or shall be designed to compare the performance of the materials, systems or ecluipmei~t wit similar materials, systems or equipment that is known to be flcl-c{~ti~tlle 3 Alternate Test Standards Acceptability. The results of tests based on test standards other than as described in this Code may be used provicled such alternate test standards will provide comparable results. 4 Alternatives..4.. Acceptability () Alternatives to requirements in this Code may be permitted provided the it0ritl/ flzliig j~lrisdictio~l satisfied that (a) the existing fire protection measures provide an flcc~pfflb~c' degree of fire safety, or (b) measures are taken to provide an ncc~pf- [77e degree of fire safety. (See Appendix A.) ntervals between nspections and Tests. Longer intervals between the inspectioils and tests specified in this Code may be permitted providecl the fllltjlcv.it!j \z~~ili~zg jll~i~~fictioiz is satisfied that such intervals do not reduce the reliability of the system or equipment requiring inspec tion or testing...5. Records. S.. Retention Period. Where this Code requires that records of inspections, maintenance proced~ires or tests be retained for exa~ninatioil by the i~lltlzorit!/ zflzli\zg j~li'is~ii~tioil, s~icll recorcls shall be retained during the required time interval between the inspections, inaintenance procedures or tests, or for 2 years, wl~ichever is greater. 6 Referenced Documents..6.. Conflicting Requirements. When a conflict exists between the provisions of this Code and those of a referei~ce document, the provisions of this Code sllall goveril.

4 --A Effective Date (2) Where reference is made in this Code to the National Building Code of Canada, such reference is to the 990 edition. ( ) Unless otherwise specified herein, the documents referenced in this Code shall include all amendments, revisions and supplements effective to 4 30 June 993. ssuing Agency (3) Documents referenced in this Code shall be the editions designated in Table..6.A. Table..6.A. Forrrring Part of Article r - pp Documents Referenced in the National Fire Code of Canada i - pp Document Number Title of Document B , Pipe Flanges and Flanged Fittings pp p AP Specification for Line Pipe AP Specification for Bolted Tanks for Storage of Production Liquids AP Specification for Field Welded Tanks for Storage of Production Liquids AP Specification for Shop Welded Tanks for Storage of Production Liquids Design and Construction of Large, Welded, Low-Pressure Storage Tanks Welded Steel Tanks for Oil Storage T Reference AP AP 4 AP AP AP 4 r ASTM Standard for Welding Pipelines and Related Facilities Recommended Pipeline Maintenance Welding Practices Venting Atmospheric and Low-Pressure Storage Tanks Repairs to Crude Oil, Liquefied Petroleunl Gas and Products Pipelines Procedures for Welding or Hot Tapping on Equipment Containing Flammables Boiler and Pressure Vessel Code Chemical Plarit and Petroleum Refinery Piping Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless ASTM Specification for Alloy-Steel and Stainless Steel Bolting ( Materials for High Temperature Service

5 Document ssuing Agency t Number n ASTM r3, ASTM D93-90 r3 r2 ASTM D r ASTM D r4 r3 ASTM D '. r2 CCME, En E (formerly CCREM) 2 CGA CANCGA M9 +-. P - CGSB CANCGSB-, 4.62-M80 r CGSB 20-GP-2Ma- 989 CSA 4 CSA r4 r CSA CSA / 8346-M980 CS A 0376-M980 i CSA B Table..6.A. (Cont'd) Title of Document Flash Point by Tag Closed Tester Flash Poin,t by Pensky-Martens Closed Tester Vapor Pressure of Petroleum Products (Reid Method) Flash Point of Liquids by Setaflash Closed-Cup Apparatus Flash Point by Small Scale Closed Tester Environmental Code of Practice for Underground Storage Tank Systems Containing Petroleum Products Propane nstallation Code Hospital Textiles - Flammability Performance Requirements Braided Water Hose, Knitted or Spiral Wound Reinforcement Boiler, Pressure Vessel, and Pressure Piping Code nstallation Code for Oil Burning Equipment Portable Fuel Tanks for Marine Use Power-Operated Dispensing Devices for Flammable Liquids Portable Containers for Gasoline and Other Petroleum Fuels Highway Tanks and Portable Tanks for the Transportation of Dangerous Goods Canadian Electrical Code, Part 4 Reference -. Code CSA CSA ' CANCSA- C282-M89 CANCSAi W7.2-M87 Emergency Electrical Power Supply for Buildings Safety in Welding, Cutting and Allied Processes Column 2 3 4

6 ' ' ssuing Agency -- - r r4 ~ r3 r r r4 r r 2 r r r r ~ - Jolumn -- L --- Table..6.A. (Cont'd) T- - Document Number Title of Document CANCSA-Z245.- M90 Steel Line Pipe General Order Flammable Liquids Bulk Storage Regulations NO i General Order Ammonium Nitrate Storage Facilities Regulations NO General Order Pipe Crossings under Railways (No. E-0) Regulations No. E RAL Railway Prevention of Electric Sparks Regulations Portable Fire Extinguishers Low Expansion Foam and Combined Agent Systems Medium and High Expansion Foam Systems Carbon Dioxide Extinguishing Systems Halon 30 Fire Extinguishing Systems Halon 2 Fire Extinguishing Systems nstallation of Sprinkler Systenls nstallation of Standpipe and Hose Systems Water Spray Fixed Systems for Fire Protection Deluge Foam-Water Sprinkler Systems and Foam-Water Spray Systems Dry Chemical Extinguishing Systems Wetting Agents Drycleaning Plants Manufacture of Organic Coatings nstallation and Use of Stalionary Combustion Engines and Gas Turbines Storage and Handling of Cellulose Nitrate Motion Picture Film Storage of Pyroxyl~n Plastic Reference Code.(4) () (3) (4) (2) () l Table A ~ () () () () () ~ (2) 6.4..l () ~ () 6

7 i ssuing Agency Document Table..6.A. (Cont'd) Title of Document Design and nstallation of Oxygen-Fuel Gas Systems for Welding, Cutting and Allied Processes Guide for Venting of Deflagrations nstallation, Maintenance and Use of Protective Signalling Systems ncinerators, Waste and Linen Handling Systems and Equipment Ovens and Furnaces Exhaust Systems for Air-Conveying of Materials 4 Code Reference r nstallation of Equipment for the Removal of Smoke and Grease-Laden Vapors from Commercial Cooking Equipment General Storage, CPPl t- i (formerly PACE) ( w--p- - f--- LlLC,--- Rack Storage of Materials! Storage of Rubber Tires Fire Safety Standard for Powered ndustrial Trucks Standard Methods of Fire Tests for Flame-Resistant Textiles and Films Recommended Practice for Product dentification at Service Stations and Distribution Terminals Guide for the lnvestigation of Metal Safety Containers Guide for Glass Fibre Reinforced Plastic Pipe and Fittings for Flam~mable Liquids ~ Steel Tanks Mounted on Service Truck Platforms for Transportation of Flammable and Combustible Liquids i Guide for the nvestigation of nternal Combustion Engine-Powered ndustrial Trucks Guide for the lnvestigation of Electric Battery Powered ndustrial Tr~~cks Guide for the lnvestigation of Valves for Flam~mable and! Combustible Liquids r Standard Methods owire Endl~rance Tests of Building Construction and Materials

8 ssuing, Agency r4 LlLC r i LlLC LlLC ; LlLC LlLC Document Number CAN-S09-M87 CAN4-Slll-M80 ~ CANlllLC-S503-M90 CAN-S504-M86 Table A.6.A. (Cont'd) Title of Document Standard for Flame Tests of Flame-Resistant Fabrics and Films Standard Method of Fire Tests for Air Filter Units Carbon Dioxide Hand and Wheeled Fire Extinguishers Dry Chemical and Dry Powder Hand and Wheeled Fire Extinguishers 9 -itre Stored Pressl- re Water Type Fire Extinguishers Rating and Fire Testing of Fire Extingl-~ishers and Class D Fire Extinguishing Media Halogenated Agent Hand and Wheeled Fire Extinguishers Standard for Smoke Alarms Standard for nspection and Testing of Fire Alarm Systems Standard for Shop Fabricated Steel Aboveground Horizontal Tanks for Flammable and Combustible Liquids Standard for Steel Underground Tanks for Flammable and Combustible Liquids Galvanic Corrosion Protection Systems for Steel Underground Tanks for Flammable and Combustible Liquids [ Code Reference 232..() , Hose for Flammable and Combustible Liquids Reinforced Plastic Underground Tanks for Petroleum Products r2 Standard for Hose Nozzle Valves for Flammable and Combustible Liquids Standard for Shop Fabricated Steel Aboveground Vertical Tar~ks for Flammable and Combustible Liquids r Flexible Undergrou~id Hose Connectors for Flammable and Combustible Liquids Standard for Compounds and Tapes for Threaded Pipe Joints r r2 Standard for Shop Fabricated Steel Above Ground Utility Tanks for Flammable and Combustible Liquids Standard for Emergency Valves for Flarr~niable and i Colurnn Combustible Liquids

9 i i (4) When two or more classes of liquids are width of storage adjacent to the wall is not more than stored in a single storey, the maximum quantity.5 m, such wall clearance is not required. (See permitted for each class of liquid shall be calculated Appendix A.) as follows: Aisles. Except as provided in Article , main aisles, access aisles and aisles defining %+%+k+%+k< individual storage areas, shall be in conformance with QA QB QC Qn QUA Article Separation from Other Dangerous Goods. Flammable liquids and combustible where liquids shall not be stored with other dangerous goods %A, B or C = the actual quantity *, B Or C unless in conformance with Article liquid present, Combustible Materials. Comq,, = the actual quantity of Class liquid bustibles other than those used for the ~ackaeine u u of present, the flammable liquids or cornbtrstible liquiis shall not be q,,,, = the actual quantity of Class A liquid stored in the same individual storage area with such i present, liquids., Q,,,,,, = the maximum quantity of Class A, B Absorbents. Acceptable absorbent or C liquid permitted in Tables A. materials shall be available in the storage area for use or B. for the arrangement, in clean-up of spilled flammable liquids or combustible Q,, = the maximum quantity of Class liquid liquids. permitted in Tables A. or B Ventilation. Storage areas described for the arrangement, in Article shall be ventilated in conformance Q,,,, = the maximum quantity of Class A with the requirements of Subsection liquid permitted in Tables A. or B. for the arrangement ncidental Use Spill Control. Drainage for spilled Application. Except as otherwise noted : flammable liquids and combzrstible liquids, including in this Part, this Subsection applies to industrial water used for fire fighting, shall be provided in occupancies where the use and handling of flammable conformance with Subsection liquids or combzlstible liquids is secondary to the Fire Suppression Systems. Where e protection is required by Article , storage areas for containers of flammable liquids and combustible liquids shall be protected by an acceptable automatic sprinkler system or equivalent fixed fire suppression system. (See Appendix A.) Clearances () The clearance between the top of storage ( and the lowest structural members, sprinkler head deflectors or other overhead fire protection system components shall be not less than 450 mm. (2) A clearance of not less than 400 mm shall be maintained between stored flammable liquids and combustible liquids and walls, except that where the principal activity. (See Appendix A.) Containers () Where flammable liquids and combustible liquids are not kept in appropriate storage rooms or.cabinets, they shall be kept in closed containers or portable tanks conforming to Article , or in storage tanks conforming to Subsection (2) Containers of fla~nrnable liquids or combustible liquids shall be kept closed when not actually in use Maximum Quantities () Except as provided in Sentences (2) and (3), the quantity of flammable liquids and combustible

10 liquids permitted to be located outside of a storage room or storage cabinet, in any one fire co~npart rnent of a building, shall not be more than (a) 600 L of flammable liquids or cornbustihle liquids in closed containers, of which not more than 00 L shall be Class A liquid, and (b) L of Class B, C, or A liquids in storage tarlks or portable tarzks. (2) Where required for normal plant activity, quantities of flammable liquids and combustible liquids may exceed those permitted in Sentence (), but shall not be greater than the supply for one day of normal opera tion. (3) Where larger quantities than are permitted by Sentence () are required, such quantities shall be in storrtge tanks installed in conformance with Sentence (2) Handling () Areas in which flanzmablc liquids or comhllstibl~ liquids are transferred from one storage tank or container to another, or are used in such a way as to release potentially explosive concentrations of flammable vapours, shall be (a) separated from possible sources of ignition by a spatial separation of not less than 6 m, or by a fire seprzratiol~ (see Appendix A), (b) provided with a drainage system to control spills in conformance with Subsection 4..6., (c) provided with acceptable absorbent materials to assist in clean-up of small liquid spills, (dl provided with either natural or mechanical ventilation in conformance with Subsectiol~ 4..7., and (e) separated from other datzgerous goods in conformance with Article Rooms for Container Storage Maximum Quantities ( ) Except as provided in Sentence (2), where flarnrnable liquids and cornbustiblc liquids are stored in rooms required in this Part, the storage densities averaged over the total room areas and the total 60 quantities of such liquids shall conform to Table A. (2) The maximum quantities and densities of flammable liquids and combustible liq uids permitted in Sentence () may be doubled provided the storage room is protected by an acceptable automatic sprinkler system or equivalent fixed extinguishing system. (See A ) Table A. Forming Part of Article Maximum Quantities and Storage Densities for Rooms for Container Storage and Dispensing Maximum Total Quantity of Liquid, L column Spill Control () Storage rooms in Article shall be liquid-tight where the walls join the floor. (2) Storage rooms in Sentence () shall be designed to accommodate possible spills of flam~nable liquids and cornbzastiblc liquids in conformance with Subsection Ventilation Minimum Fire Separation Around Storage Room, h 2 Maximum Density, L/m () Every storage room in Article shall be ventilated in conformance with the requirements in this Subsection and with Subsection (2) Mechanical ventilation shall be used if flanz~nnble liquids are dispensed within the storage room. (3) Mechanical ventilation in storage rooms shall provide at least 8 m3/h of exhaust air per square metre of room area, but not less than 250 m3/ h. (4) Exhaust air from a ventilation system shall be discharged outdoors and shall be taken from

11 system, the vent piping shall be sized to accommodate the maximum vapour flow possible in the system. (3) Vent piping for an underground storage tank containing a flalnmnble liquid shall not be connected to the vent piping for a storage tank containing a cornbzlstible liquid unless an effective method is provided to prevent the vapours from the flamlnahle liquids storage tank from entering the other tank Openings Other than Vents in Underground Storage Tanks 4.3. Connections. Connections for all openings in underground storage tanks shall be liquid and vapour tight Openings for Measuring Liquid Level. Openings for measuring liquid levels in underground storage tal~ks if independent of the fill pipe shall be equipped wit a vapour-tight cap or cover which shall be opened only when measuring the liquid level Fill Piping and Discharge Piping () Fill piping and discharge piping shall enter underground storagp tallks only through the top of the tank and discharge piping used in suction systems shall be sloped toward the stomge tarzks. (2) Remote fill outlets from an underground storag~ tknk shall not be located higher than Gther outlets from the tank. 3 (3) Connections used as part of normal operating conditions for filling or emptying storagt7 tanks for flnn?mable liquids and conrbustiblt7 liqliids shall be located outside bliildillgs at a location free of sources of ignitiofi and not less than.5 m away from building openings. (4) Connections for filling or emptying storage tanks in Sentence (3) shall be kept closed to prevent leakage when not in use. (5) Connections for filling or emptying storage rz tanks in Sentence (3) shall be identified in conformance with CPP "Recommended Practice for Product dentification at Service Stations and Distribution Terminals." nstallation of Storage Tanks inside Buildings Occupancy ( ) Except as provided in Articles and , storage tanks shall not be permitted in other than illdlistrial occliyancies. (2) Rooms and floor areas used for storage of flanrmable liquids or conzbzistible liquids in stomgc. talzks inside bliildings shall be classified as Group F, Division occpancies in conformance with the National Building Code of Canada. (See Appendix A.) Oil Burning Equipment. Storage tanks for combzistible liquids used as a fuel supply for stationary engines shall be installed in conformance with the requirements of CSA B39, "nstallation Code for Oil Burning Equipment" for supply tanks installed inside bziildin,~~ Stationary Combustion Engines () Except as permitted in Sentence (2), installations using flall~mnblc liq~lills as fuel supplies for stationary engines inside bliilliillgs shall conform to 37, "nstallation and Use of Stationary Combustion Engines and Gas Turbines." (2) n bliildilzgs which contain only stationary engines and associated generating or pumping equipment, flan~lnnble liqrrids may be used as fuel supplies provided the installation conforms to this Part Maximum Quantities and Location () Except as provided in Subsection , and in Sentence (2), stomgc tanks for flnrnrlal7le liqliills or colnbl~stiblc liqziills shall be (a) located in dedicated rooms conforming to Subsection , and (b) located in conformance with Table A. (2) When quantities greater than are permitted for incidental use in Subsection are required for special process operations, storagc tanks for flammable liql~ids or con~bristiblc liqliids are permitted to be located outside of a storage room conforming to Subsection , provided that

12 (a) total quantities are not more than one-half the quantities permitted in Table A., (b) they are located on the first storey, and (c) the installation conforms to Articles where to and Article q, = the actual quantity of Class liquid (3) Quantities permitted in Sentence (2) to be present, outside of a storage room shall be included in the total quantity allowed per storey in Table A. q,, = the actual quantity of Class liquid present, Maximum Static Head. The static q,,,, = the actual quantity of Class A liquid head imposed on a storage tank inside a building shall not exceed 70 kpa (gauge) at the bottom of the tank present, when the vent or fill pipe is filled with liquid unless Q, = the maximum quantity of Class liquid the tank is designed for greater pressures. permitted in Table A., Mixed Storage. When two or more Q,, = the maximum quantity of Class liquid classes of liquids are stored in a single storey, the total permitted in Table A., quantity permitted for each class of liquid shall be Q,,,, = the maximum quantity of Class A calculated as follows: liquid permitted in Table A. Class of Liquid Table A. Forniing Part of Article r Tank Storage of Flammable Liquids and Combustible Liquids in Rooms Maximum Quantity per Storey(*), L Location of One or more Tanks Dedicated Room Protected (3) Llnprotected Storage Storage CLASS CLASS and A First storey Storeys above.the first storey Basement First storey Storeys above the first storey Basement Not Permitted Not Permitted Not Permitted Not Permitted Notes to Table A.: (' See Article (2) See Sentence (3) (3) See Article for guidance on acceptable protection.

National Fire Code of Canada I990

National Fire Code of Canada I990 National Fire Code of Canada 990 Second Revisions and Errata ssued by the Canadian Commission on Building and Fire Codes National Research Council of Canada Ottawa January 1992 The attached pages identify