jswizzle3737/ontario_laws_and_regs huggingface dataset:
4.3.13.5. (1) Placards conforming to the Transportation of Dangerous Goods Regulations made under the Transportation of Dangerous Goods Act, 1992 (Canada) shall be posted in a conspicuous location outside the room containing storage tanks. (2) Placards required in Sentence (1) shall identify the (a)  liquids stored as flammable liquids or combustible liquids, and (b)  capacities of the storage tanks. (3) Despite Clause (2)(a), where storage consists of a single product, placards that identify the liquid using the UN Product Identification Number (PIN) shall be acceptable. (4) Despite Clause (2)(a), where storage consists of multiple products within the same class, placards that identify the class of liquids shall be acceptable. (5) Despite Clause 2(a), where storage consists of more than one class of liquid, placards that indicate the danger symbol or individual placards for each class of liquid shall be acceptable. (6) Rooms for storage tanks and the information described in Sentence (2) shall be identified in the fire safety plan required in Article 4.1.5.6. Subsection 4.3.14. Openings Other than Vents in Storage Tanks in Buildings Connections
4.3.14.1. (1) Connections for all openings in storage tanks in buildings shall be liquid and vapour tight. (2) Connections to storage tanks through which liquid can flow shall be provided with valves located as close as practical to the tank. Openings for liquid level measurement
4.3.14.2. (1) Openings that are independent of the fill pipe and are used for measuring the liquid level in storage tanks containing Class I or II liquids shall be equipped with a vapour-tight cap which shall be opened only when measuring the liquid level. (2) Openings referred to in Sentence (1) shall be protected against overflow and vapour pressure by means of a spring-loaded check valve. Subsection 4.3.15. Leakage Testing of Storage Tanks Leakage testing
4.3.15.1. (1) Every
storage tank shall be tested for leakage in conformance with Sentences (2) to (4) (a)  whenever a leak is suspected, and (b)  at the time of installation (i)  before backfilling in the case of an underground tank, or (ii)  before filling or putting into service in the case of an aboveground tank. (2) When a leakage test is required by Sentence (1) on an aboveground storage tank, it is permitted to determine the source of leakage (a)  by a visual examination of the tank shell, and (b)  where the bottom is not amenable to such examination, by testing the bottom of the tank in conformance with Sentence (3). (3) Except as provided in Articles 4.3.15.4. and 4.3.15.5., when a leakage test is required by Sentence (1) on an underground storage tank, it shall be done by qualified personnel using equipment conforming to (a)  ULC/ORD-C58.12, “Leak Detection Devices or (Volumetric Type) for Underground Flammable Liquid Storage Tanks”, or (b)  ULC/ORD-C58.14, “Nonvolumetric Leak Detection Devices for Underground Flammable Liquid Storage Tanks”. (4) Where field test methods are included in the tank construction standards referred to in Articles 4.3.1.2. and 4.3.1.3., such tests shall be permitted for storage tanks
conforming to those standards.
4.3.15.2. RESERVED Remedial action
4.3.15.3. (1) When a leak is detected in a storage tank by a leakage test required in this Subsection or by a leakage detection measure required in Subsection 4.3.16., (a)  the storage tank
shall (i)  be replaced, in the case of an underground tank, or (ii)  be repaired or replaced in the case of an aboveground tank, and (b)  the escaped liquid shall be removed in conformance with Article 4.1.6.3. (2) The Chief Fire Official shall be notified within 24 h of detection of a leak referred to in Sentence (1). Pneumatic leakage tests
4.3.15.4. (1) Pneumatic leakage tests shall not be performed on field-erected aboveground storage tanks. (2) Pneumatic leakage tests shall not be performed on storage tanks with flammable liquids
or combustible liquids in the tanks. (3) Where a pneumatic leakage test is performed on an underground storage tank, the tank shall be considered to be leaking when the test indicates a pressure drop within a 2 h period after steady temperature conditions have been established and the source of pressure has been removed. (4) Pneumatic test pressures applied to underground storage tanks shall be measured by an instrument calibrated in increments of not more than 1 kPa. (5) If a pneumatic leakage test is conducted before an underground tank is backfilled in the case of a new tank, or after the tank is uncovered in the case of a previously installed tank, the test pressure shall comply with the production testing requirements of (a)  ULC-S603, “Standard for Steel Underground Tanks for Flammable and Combustible Liquids”, or (b)  ULC-S615, “Standard for Reinforced Plastic Underground Tanks for Flammable and Combustible Liquids”. (6) Where a pneumatic leakage test is performed on a completely buried storage tank, the test pressure shall be not less than 35 and not more than 70 kPa (gauge). (7) Measures shall be taken to guard against the hazards associated with pneumatic leakage testing where explosive mixtures of vapours from flammable liquids or combustible liquids and air may be present in the area of a tank that has been in use. Liquid media leakage tests
4.3.15.5. (1) Where a leakage test incorporating a liquid test medium, including a flammable
liquid or combustible liquid, is performed on an underground storage tank, the tank shall be considered to be leaking when, with compensation for volume differentials caused by effects of temperature and tank shell distortion, the test indicates a liquid loss. (2) The pressure at the bottom of a storage tank shall not exceed 70 kPa (gauge) during the leakage test referred to in Sentence (1). Subsection 4.3.16. Leakage Detection of Storage Tanks Liquid level measurements
4.3.16.1. (1) Except as provided in Article 4.3.16.2., the liquid level in any storage tank shall be measured at intervals not greater than seven days in conformance with Sentences (2) to (4), except that at fuel dispensing stations, the measurements shall be taken each day the station is in operation. (2) The level of water at the bottom of an underground storage tank shall be measured at intervals not greater than seven days, except that at fuel dispensing stations, the measurement shall be taken each day the station is in operation. (3) A comparison of the measurements described in Sentences (1) and (2) with meter readings and a computation of any gain or loss of liquid shall be done each time a required measurement is taken. (4) A record for each storage tank showing the measurements and computations described in Sentence (3) shall be retained for examination by the Chief Fire Official, in conformance with Subsection 1.1.2. Continuous leakage detection
4.3.16.2. (1) The measurements described in Article 4.3.16.1. are not required for an underground
storage tank when (a)  it is provided with a continuous leakage detection device conforming to (i)  ULC/ORD-C58.12, “Leak Detection Devices (Volumetric Type) for Underground Flammable Liquid Storage Tanks”, or (ii)  ULC/ORD-C58.14, “Nonvolumetric Leak Detection Devices for Underground Flammable Liquid Storage Tanks”, and (b)  its associated underground piping is provided with continuous leakage detection conforming to Article 4.4.6.7. Corrective action
4.3.16.3. (1) Immediate corrective action shall be taken in conformance with Subsection 4.3.15. when (a)  a loss of liquid or a gain of water is indicated by any of the leakage detection measures described in Articles 4.3.16.1. and 4.3.16.2., or (b)  the level of water at the bottom of an underground storage tank exceeds 50 mm. Subsection 4.3.17. Out of Service Underground storage tanks
4.3.17.1. (1) When underground storage tanks will be out of service for a period not exceeding 180 days, (a)  the liquid level in the storage tank shall be measured at intervals not greater than one month and a record of such measurements shall be retained for inspection, (b)  fill pipe covers and covers over openings to measure liquid levels, dispensers and power controls shall be kept locked when not in use, and (c)  vent piping shall be kept open. (2) Except as provided in Sentence (3), when underground storage tanks will be out of service for a period exceeding 180 days, (a)  the storage tanks, connected piping and dispensers shall be emptied of Class I liquid, (b)  the storage tanks, piping and dispensers shall be refilled with a Class II or IIIA liquid, or not less than 1 kg of dry ice for each 500 L of tank capacity shall be added to the storage tank, (c)  measurements of the liquid level of each storage tank containing a Class II or IIIA liquid shall be made at intervals not greater than one month, and a record of such measurements shall be retained for inspection, and (d)  fill pipe covers and covers over openings to measure liquid levels, dispensers and power controls shall be locked. (3) Where underground storage tank facilities are operated on a seasonal basis, (a)  at the close of each season of operation, (i)  the liquid level of each storage tank shall be measured, (ii)  a record of such measurements shall be retained for inspection, and (iii)  all fill pipe covers and covers over openings for measuring liquid levels, dispensers and power controls shall be locked, and (b)  prior to the start of an operating season, (i)  the liquid level in each storage tank shall be measured, (ii)  the measurements shall be compared with those recorded at the close of the previous season, and (iii)  when a loss of liquid or water intrusion is apparent, immediate action shall be taken to determine and correct the condition. (4) Where a storage tank has been out of service for more than 12 months, the tank and piping shall be tested for leakage in conformance with Subsections 4.3.15. and 4.4.6. Aboveground storage tanks
4.3.17.2. (1) When an aboveground storage tank will be out of service or unsupervised for a period not exceeding 180 days, the piping from the tank shall be capped or the valves necessary to achieve similar isolation of the tank shall be closed and securely locked. (2) When a storage tank referred to in Sentence (1) contains flammable liquids or combustible liquids, the liquid level in the tank shall be measured and the readings compared at intervals not greater than one month. (3) Where an aboveground storage tank will be out of service or unsupervised for a period exceeding 180 days, (a)  all liquid and vapours shall be removed from the storage tank and its connected piping, and (b)  the storage tank
markings shall clearly indicate that the tank is empty. Disposal
4.3.17.3. Where a storage tank is to be permanently disposed of, sufficient openings shall be cut in the tank to render it unfit for further use. Removal
4.3.17.4. (1) When underground storage tanks have no further use or have been out of service for two years or longer, such tanks, together with connected piping and dispensers, shall (a)  have all flammable
liquids and combustible liquids
removed from them, (b)  be purged of vapours, and (c)  except as permitted in Article 4.3.17.5., be removed from the ground. (2) If contaminated, soil surrounding the storage tanks described in Sentence (1) shall be replaced with clean fill. Abandonment in place
4.3.17.5. (1) Where the Chief Fire Official determines that it is impractical to remove an underground storage tank
described in Sentence 4.3.17.4.(1), such tank shall be filled with an inert material. (2) Where the Chief Fire Official determines that it is impractical to remove underground piping described in Sentence 4.3.17.4.(1), such piping shall have the ends permanently sealed by capping or plugging. Corrosion protection
4.3.17.6. Corrosion protection systems shall be maintained in operating condition when a storage tank is temporarily out of service and during seasonal shutdowns. SECTION 4.4 PIPING AND TRANSFER SYSTEMS Subsection 4.4.1. Application Application
4.4.1.1. (1) This Section applies to piping and transfer systems for flammable
liquids and combustible liquids. (2) Except where otherwise stated in this Part, this Section shall not apply to the following: (a)  tubing or casings and piping for oil or gas wells, (b)  transmission pipelines, (c)  piping for vehicles, aircraft, watercraft and portable or stationary engines, (d)  piping systems in fuel dispensing stations and distilleries, and (e)  piping within the scope of the applicable provincial boiler and pressure vessel codes. Subsection 4.4.2. Materials for Piping, Valves and Fittings Materials
4.4.2.1. (1) Piping systems that contain flammable liquids
or combustible liquids shall be made of materials that are suitable for the maximum anticipated working pressures and operating temperatures and for the chemical properties of the contained liquid. (2) Subject to Sentence (3), piping systems shall not be made of materials that (a)  are subject to failure from internal stress or rupture by mechanical damage, or (b)  are subject to failure in fires because they are combustible or have a low melting point. (3) Non-metallic piping systems may be used for underground installations if they comply with CAN/ULC-S660, “Standard for Nonmetallic Underground Piping for Flammable and Combustible Liquids”. (4) If steel piping is used, it shall comply with (a)  API 5L, “Line Pipe”, (b)  ASTM A53/A53M, “Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless”, or (c)  CSA Z245.1, “Steel Pipe”. (5) If service pressures exceeding 875 kPa (gauge) may occur, piping and fittings shall be designed in accordance with ASME B31.3, “Process Piping”. (6) Underground piping systems shall include piping in tank sumps, transition sumps and dispenser sumps. Special materials
4.4.2.2. Where problems of corrosion, contamination or sanitation or standards of purity require special materials, it is permitted to use non-metallic materials for piping, valves and fittings in conformance with Article 4.1.1.4. Underground piping system construction
4.4.2.3. (1) Underground piping systems shall be of double-walled construction. (2) Sentence (1) does not apply to vent risers and vertical fill piping systems.
(3) In-service underground piping systems that do not comply with Sentence (1) may remain in-service if the piping does not leak and if the piping system met the requirements of this Code on December 31, 2014, as it read on that day. Subsection 4.4.3. Corrosion Protection of Piping Systems Corrosion protection
4.4.3.1. (1) Except as provided in Sentence (2), all exposed or underground piping, valves, couplings, flanges and bolts that are fabricated of any ferrous substance shall be thoroughly coated with a rust-resistant compatible material. (2) Underground metallic piping systems in contact with the soil or groundwater shall be protected against corrosion in accordance with (a)  CAN/ULC-S603.1, “External Corrosion Protection Systems for Steel Underground Tanks for Flammable and Combustible Liquids”, or (b)  NACE SP0169, “Control of External Corrosion on Underground or Submerged Metallic Piping Systems”. Subsection 4.4.4. Identification of Piping Systems Identification
4.4.4.1. (1) Pipelines for flammable liquids or combustible liquids shall be marked with the contents of the line, and these markings shall be maintained in a clearly legible form. (2) Piping for flammable liquids or combustible liquids shall not be painted red. (3) Transfer points in piping systems for flammable liquids and combustible liquids shall be identified in conformance with CPPI, “Using the CPPI Colour-Symbol System to Mark Equipment and Vehicles for Product Identification”, or to CAN/CGSB-24.3, “Identification of Piping Systems”. Documentation
4.4.4.2. (1) Documentation on piping systems for flammable liquids or combustible liquids, including tank and pumping arrangements, shall be made available to the fire department
upon request. (2) Documents referred to in Sentence (1) shall be kept at two separate locations so that one copy remains readily available in the event the other is inaccessible due to fire. Subsection 4.4.5. Joints in Piping Systems Threaded joints
4.4.5.1. Threaded joints in piping systems for flammable liquids
or combustible liquids shall be made using joint compound or polytetrafluoroethylene tape conforming to CAN/ULC-S642, “Standard for Compounds and Tapes for Threaded Pipe Joints”. Welded piping
4.4.5.2. (1) Welding of piping for flammable liquids
or combustible liquids shall comply with Section 5.17 and (a)  API 1104, “Welding of Pipelines and Related Facilities”, or (b)  API RP 1107, “Recommended Pipeline Maintenance Welding Practices”. (2) Flanged joints for piping shall be provided in welded systems at intervals that will facilitate dismantling and avoid subsequent in place hot work operations. Flanged joints 4.4.5.3. (1) Subject to Sentence (2), flanged joints for piping shall be made with forged or cast steel flanges designed, constructed and installed in accordance with ASME B16.5, “Pipe Flanges and Flanged Fittings NPS ½ Through NPS 24 Metric/Inch Standard”. (2) Bronze flanges for 50 mm diameter or smaller size piping referred to in Article 4.4.5.2. are permitted to be used where copper and brass piping is permitted. Bolting materials
4.4.5.4. Bolting materials for flanged connections in steel piping systems for flammable
liquids or combustible liquids
shall be of alloy steel equivalent to “ASTM A193/A193M, “Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications”, Grade B-7. Gaskets
4.4.5.5. Gaskets in flanged connections shall be of a material resistant to the liquid being carried and capable of withstanding temperatures of at least 650°C without damage that would impair its function. Mechanical connections
4.4.5.6. (1) Where underground piping systems have no secondary containment, mechanical connections shall (a)  be readily accessible for inspection and maintenance, and (b)  not be in direct contact with the soil. Subsection 4.4.6. Leakage Testing of Piping Systems Leakage testing
4.4.6.1. (1) Piping systems including those at fuel dispensing stations
shall be tested for leakage in conformance with Sentences (2) and (3) (a)  whenever a leak is suspected, and (b)  at the time of installation (i)  before backfilling in the case of underground piping, or (ii)  before putting into service in the case of exposed piping. (2) In-service exposed piping systems may be visually inspected for leakage in accordance with Article 4.4.11.5. (3) When exposed piping systems are subjected to a pneumatic leakage test, (a)  it shall be in conformance with Article 4.4.6.4., and (b)  the piping, including the joints, shall be soaped to assist in the detection of leaks.
4.4.6.2. RESERVED Remedial action
4.4.6.3. If a leak is detected in a piping system during the leakage test, the piping system shall be repaired or replaced and the escaped liquid shall be removed in conformance with Subsection 4.1.6. Pneumatic leakage tests
4.4.6.4. (1) Piping systems referred to in Sentence 4.4.6.1.(3) shall be considered to be leaking when the test indicates a pressure drop or a volume loss within a 2 h period after steady temperature conditions have been established and the source of pressure had been removed. (2) Pressure measurements referred to in Sentence (1) shall be obtained by using instruments calibrated in increments of not more than (a)  4 kPa for test
pressures up to 700 kPa (gauge), and (b)  1% of the test pressure where it exceeds 700 kPa (gauge). Test pressures
4.4.6.5. (1) Except as provided in Sentences (2) and (3) and Article 4.4.6.6., piping systems shall be pressure tested at pressures of not less than 350 kPa (gauge) or 1.5 times the maximum operating pressure, whichever is greater. (2) Test
pressures exceeding 700 kPa (gauge) shall not be used except when the piping system is designed for such pressures. (3) Where test pressures exceed the design pressures for pumps or similar components included in the piping system being tested, such pumps or components shall be isolated from the remainder of the system. Class I liquids as a test medium
4.4.6.6. Class I liquids shall not be used for pressure testing of piping systems, except that piping normally containing Class I liquids under pressure is permitted to be tested with such liquids at pressures not exceeding their maximum operating pressures. Leakage detection
4.4.6.7. When an underground piping system is provided with continuous leakage detection, it shall be in conformance with ULC/ORD-C107.12, “Line Leak Detection Devices for Flammable Liquid Piping”. Subsection 4.4.7. Location and Arrangement of Piping Location
4.4.7.1. (1) Piping shall be installed outdoors whenever possible and located so it will not create a hazard to buildings or equipment. (2) Where piping for flammable liquids or combustible liquids is installed within a building, the length of piping shall be as direct and as short as practicable. (3) No portion of a piping system shall be used in a manner that could cause damage to the piping system. (4) Piping systems shall be used only for the transfer of products. Supports for aboveground outdoor piping
4.4.7.2. (1) Aboveground outdoor piping shall be supported and arranged to prevent excessive vibration and stress on equipment connected to it. (2) When vehicular impact or physical damage is possible, protective guarding devices shall be provided for piping referred to in Sentence (1) and for fill pipes for storage tanks. (3) Aboveground piping systems shall be supported such that they are not in direct contact with the surface of the ground. Arrangement of aboveground outdoor piping
4.4.7.3. (1) Aboveground outdoor piping shall not be located (a)  on the exterior of walls except on those of noncombustible construction, or (b)  above windows and doors. (2) Aboveground outdoor piping shall not be located above roofs except above roofs of impermeable and noncombustible construction, with provision for accidental spillage provided in conformance with Subsection 4.1.6. (3) Where aboveground piping crosses roadways or railway sidings, ample overhead clearance and warning signs indicating the clearance height shall be provided. (4) Piping passing through secondary containment walls shall be designed to prevent excessive stress resulting from settlement or fire exposure. Underground piping
4.4.7.4. (1) Underground piping shall be located so it will not be damaged as a result of vibrations or settling of an adjacent building or structure. (2) Underground piping shall be located not less than 300 mm away from the foundations of any building or structure, except where such piping enters the building as permitted in Article 4.4.7.7. (3) Piping passing under railway tracks shall be installed in conformance with TC, “Standards Respecting Pipeline Crossings Under Railways”. (4) Piping adjacent to railway tracks shall be installed in conformance with Flammable Liquids Bulk Storage Regulations made under the Canada Transportation Act. Installation of underground piping
4.4.7.5. (1) Underground piping shall be (a)  supported on undisturbed or compacted soil, and (b)  backfilled on the top and sides with not less than (i)  300 mm of pea gravel or clean crushed stone, or (ii)  300 mm of clean sand, free of cinders and stones and compacted in layers not more than 300 mm thick. (2) Where it is not practicable to support piping as required in Sentence (1) on undisturbed soil, it shall be supported on not less than 150 mm of clean sand, pea gravel or washed, crushed stone. Piping in service tunnels
4.4.7.6. Piping for flammable liquids or combustible liquids
shall not be located in service tunnels that are used for pedestrian traffic other than for maintenance purposes. Piping at entrances to buildings
4.4.7.7. (1) Piping for flammable liquids or combustible liquids shall be located aboveground where the piping enters a building. (2) Piping referred to in Sentence (1) shall be provided with inside and outside shut-off valves. (3) Where piping referred to in Sentence (1) passes through a wall which would restrict the expansion or contraction of the piping, pipe sleeves shall be provided at the wall penetration to facilitate such movement. Indoor piping
4.4.7.8. (1) Indoor piping for flammable liquids
or combustible liquids shall either be supported overhead or be located in trenches conforming to Article 4.4.7.9. (2) Piping referred to in Sentence (1) shall not be installed under combustible flooring. Piping in trenches
4.4.7.9. (1) Where indoor piping for flammable liquids
or combustible liquids is installed in trenches, a trapped drainage system conforming to Subsection 4.1.6. shall be provided. (2) When piping referred to in Sentence (1) contains Class I liquids, the trench shall be (a)  provided with positive ventilation to the outdoors, or (b)  designed to prevent the accumulation of flammable vapours. (3) Noncombustible material shall be used to cover piping referred to in Sentence (1). Overhead piping
4.4.7.10. (1) Overhead piping for flammable liquids
or combustible liquids shall be installed close to the ceiling or beams or along walls not less than 1.8 m above the floor to protect it against mechanical damage. (2) Where practical, overhead piping referred to in Sentence (1) shall be supported from building framing members. (3) In buildings of steel frame construction, piping referred to in Sentence (1) shall be fastened to steel beams or columns by pipe hangers attached to the flanges. (4) Piping under concrete ceilings shall be suspended with the use of through bolts or expansion shields. Supports for overhead piping
4.4.7.11. (1) Piping shall be supported on pipe hangers or other supports so that allowable stresses in the pipe are not exceeded.  (2) Anchors of the expansion shield type used to suspend piping shall not be used to suspend piping from unsound or lightweight concrete or from gypsum assemblies. Protection of pipe risers
4.4.7.12. (1) Exposed pipe risers shall be protected against mechanical damage by (a)  installing such risers (i)  adjacent to walls or pilasters, (ii)  between flanges of steel columns, or (iii)  within securely anchored larger perforated pipe, and (b)  providing mechanical guards where the risers are exposed to mobile equipment. Provision for expansion and contraction
4.4.7.13. (1) In the design of piping systems for flammable liquids or
combustible liquids, provision shall be made for the expansion and contraction of the piping system and of the product it conveys. (2) To prevent excessive stresses resulting from vibration, settling or temperature changes (a)  flexible non-metallic hose connectors conforming to CAN/ULC-S633, “Standard for Flexible Underground Hose Connectors for Flammable and Combustible Liquids” are permitted to be used where necessary in underground piping systems carrying flammable liquids or combustible liquids, (b)  flexible non-metallic pipe and fittings conforming to CAN/ULC-S660, “Standard for Nonmetallic Underground Piping for Flammable and Combustible Liquids”, are permitted to be used where necessary in underground piping systems carrying flammable liquids or combustible liquids, or (c)  flexible metallic hose connectors conforming to ULC/ORD-C536, “Flexible Metallic Hose”, are permitted to be used where necessary in aboveground and underground piping systems carrying flammable liquids or combustible liquids. Subsection 4.4.8. Valves in Piping Systems Design
4.4.8.1. (1) Except as provided in Sentences (2), (3) and (4), valves in piping systems for flammable liquids or combustible liquids shall be designed to accommodate the temperatures and pressures of those systems and shall conform to ULC-C842, “Valves for Flammable and Combustible Liquids”. (2) Every hose nozzle valve shall conform to CAN/ULC-S620, “Standard for Hose Nozzle Valves for Flammable and Combustible Liquids”. (3) Every emergency valve shall conform to CAN/ULC-S651, “Standard for Emergency Valves for Flammable and Combustible Liquids”. (4) Existing valves are deemed to comply with Sentences (1), (2) and (3), provided they are (a)  not leaking, and (b)  constructed of material that is in conformance with Article 4.4.2.1. Shut-off valves
4.4.8.2. (1) Shut-off valves shall be provided in all flammable liquid or combustible liquid
piping and pumping systems. (2) Where practical, valves referred to in Sentence (1) shall be located outdoors or be immediately accessible from outdoors. (3) Except as permitted in Sentence (4), steel shut-off valves shall be provided (a)  at connections to all aboveground storage tanks, (b)  on supply piping where it enters buildings or structures, (c)  on branch lines from the main supply line, (d)  on supply lines at dispensing locations, (e)  to isolate one part of a piping system from another, and (f)  to isolate meters and air eliminators. (4) Stainless steel, monel metal or lined steel bodied valves are permitted to be used when special conditions warrant their use. Diaphragm valves
4.4.8.3. Diaphragm valves shall have no direct connections between the liquid and air sections that might permit leakage of the liquid past the packing into the air lines. Globe valves
4.4.8.4. Globe valves shall be arranged so that the packing is on the low pressure side. Indicating valves
4.4.8.5. Rising stem or other indicating valves shall be used where necessary to determine whether the valves are open or shut. Identification
4.4.8.6. (1) All valves shall be identified in conformance with CPPI, “Using the CPPI Colour-Symbol System to Mark Equipment and Vehicles for Product Identification”, or to CAN/CGSB-24.3-92, “Identification of Piping Systems”. (2) Every identification tag shall be kept clean so that its colour and inscription are easily recognizable. Subsection 4.4.9. Heating of Piping Systems Design
4.4.9.1. Heating equipment for piping systems containing flammable liquids or combustible liquids
shall be designed not to overheat or create an ignition source for the liquids being heated. Steam heating
4.4.9.2. (1) Flammable liquids and combustible liquid piping is permitted to be heated by steam lines provided the minimum steam temperature and pressure to make the liquid fluid are used and Sentences (2) and (3) are complied with. (2) A pressure regulator shall be provided in the steam line with a relief valve on the downstream side of the regulator. (3) Piping and steam lines shall be enclosed in insulation conforming to the Building Code. Electrical heating cables
4.4.9.3. Electrical heating cables including electrical induction heating, shall conform to Subsection 4.1.4. Thermal electrical conduction heating
4.4.9.4. (1) Thermal electrical conduction heating conforming to Sentence (2) is permitted to be used by passing a low-voltage alternating current through the pipe. (2) Systems permitted in Sentence (1) shall be installed and tested as complete units and (a)  unheated sections of piping shall be isolated from heated sections by means of nonconductive fittings, (b)  thermostatic controls, high temperature limit controls and fuses shall have the lowest practical rating to ensure satisfactory operation, (c)  all parts of the piping and fittings shall be enclosed by insulated coverings of a type which will prevent accidental grounding of the systems, and (d)  switches, transformers, contactors and other spark-producing equipment shall be located in an area not subject to flammable vapours. (3) Upon completion of the installation, systems permitted in Sentence (1) shall be tested to ensure that all components are functioning as intended. Open flames
4.4.9.5. (1) Subject to Sentence (2), open flames shall not be used as a heat source to heat piping for flammable liquids or combustible liquids. (2) Open flames may be used to heat piping for flammable liquids
or combustible liquids if the heating is carried out in furnaces or ovens that comply with NFPA 86, “Standard for Ovens and Furnaces”. Subsection 4.4.10. Methods of Transfer in Piping Systems Location of outdoor pumps
4.4.10.1. (1) Pumps for flammable liquid or combustible liquid piping systems installed aboveground and outside of buildings shall be located not less than (a)  3 m from the property line, and (b)  1.5 m from building
openings. Pump houses and pump rooms
4.4.10.2. (1) Pumps located indoors shall be in rooms built in conformance with Subsection 4.2.9. (2) Pump houses and pump rooms shall not be used for any purpose other than to serve the pumping equipment. Pits
4.4.10.3. (1) Pits for subsurface pumps for piping systems or for piping connected to submersible pumps shall be designed to withstand the forces to which they may be subjected without causing damage to the system. (2) Pits provided in conformance with Sentence (1) shall not be larger than necessary for inspection and maintenance and shall be provided with a cover. Control switches
4.4.10.4. Pumps for piping systems shall be provided with duplicate control switches to shut down the pumps in case of emergency, with one located in the operating area and the other at a remote location. Hydraulic transfer systems
4.4.10.5. (1) Where
flammable liquids or combustible liquids are transferred by water pressure as a result of displacement, such system shall not be used for liquids that are miscible in water. (2) All pressure vessels for hydraulic transfer systems referred to in Sentence (1) shall be constructed, installed and tested
in conformance with ASME BPVC, “Boiler and Pressure Vessel Code”. (3) Hydraulic transfer systems referred to in Sentence (1) shall be designed to prevent water pressure in excess of the design pressure of the tank or piping. (4) Operating pressures shall be controlled by a constant-level float valve or a pressure-regulating valve on the water supply side of the hydraulic transfer system referred to in Sentence (1). (5) Hydraulic transfer systems referred to in Sentence (1) shall be arranged so that there is no water pressure on the system except when liquid is being discharged. (6) Check valves shall be provided for both water and flammable liquid or combustible liquid
piping to prevent back-flow in hydraulic transfer systems referred to in Sentence (1). Inert gas transfer systems
4.4.10.6. (1) Where
flammable liquids or combustible liquids are transferred as a result of displacement by the expansion of nitrogen, carbon dioxide or other inert gases, all pressure vessels involved shall be constructed, installed and tested in conformance with ASME BPVC, “Boiler and Pressure Vessel Code”. (2) Pressure regulators for inert gas transfer systems referred to in Sentence (1) shall be provided in the gas line to control the pressure of the gas at the minimum pressure required to force the liquid through the piping system at the required rate. (3) A relief valve with a slightly higher setting than the pressure required in Sentence (2) shall be provided on the downstream side of the regulator or on the tank. (4) Means of automatically shutting off the gas supply and bleeding the gas pressure in the event of fire shall be provided on all inert gas transfer systems referred to in Sentence (1). Non-inert gas transfer 4.4.10.7. (1) Subject to Sentence (2), compressed air or other non-inert gas pressure shall not be used in the transfer of flammable liquids
or combustible liquids in a closed piping system.
(2) A non-inert gas pressure is permitted to be used in a closed piping system referred to in Sentence (1) provided (a)  it is the vapour or gas of the flammable liquid or combustible liquid being transferred, or (b)  it is a vapour or gas that will not support combustion reaction and is non-reactive with the flammable
liquid or combustible liquid
being transferred. Subsection 4.4.11. Operating Procedures for Piping Systems Procedures
4.4.11.1. Standard procedures for normal operations and for emergencies shall be given in printed form to all employees engaged in the operation of equipment for the transfer of
flammable liquids and combustible liquids and shall be posted or readily available for convenient reference. Training
4.4.11.2. (1) All employees participating in transfer operations involving flammable liquids or combustible liquids shall be trained in (a)  the procedures referred to in Article 4.4.11.1., (b)  the importance of constant attendance during all loading or unloading operations, (c)  extinguishing procedures for fires involving flammable liquids
and combustible liquids, and (d)  the flammable
liquids and combustible liquid
colour-coding and identification system required in Article 4.4.8.6. (2) Employees engaged in the operation of equipment for the transfer of flammable
liquids or combustible liquids
shall be trained in the location, function and operation of valves used for the operation of fire protection equipment and manual emergency shut-off valves. Emergency valves
4.4.11.3. Signs indicating the location of valves used for the operation of fire protection equipment and manual emergency shut-off valves shall be posted in conspicuous locations. Portable extinguishers
4.4.11.4. At least one portable extinguisher having a rating of 80B:C shall be provided in the vicinity of pumps and ancillary equipment used for the transfer of flammable liquids or combustible liquids. Visual inspections
4.4.11.5. (1) A visual inspection routine for the prompt detection of obviously abnormal conditions shall be established and shall be performed at least once each shift. (2) A visual inspection shall be made at least once during each day of operation of all aboveground piping systems, pumps and other ancillary equipment, to detect leakage, and any such leakage shall be repaired as quickly as practical. (3) Where necessary, flammable vapour indicators shall be used to detect leakage. (4) Open flames and spark-producing devices shall not be used for leakage detection referred to in Sentence (2). Operational tests
4.4.11.6. To ensure proper operation, frequent inspections and tests shall be made of all safety shut-off valves and other fire safety devices, with particular attention directed to normally open, fusible-link operated valves, float valves and automatic controls. Maintenance
4.4.11.7. (1) Except as provided in Sentence (6), maintenance shall not be carried out on piping systems while they are under pressure. (2) If connections or piping are to be opened, the system shall be drained of flammable liquids and combustible liquids. (3) Where equipment for handling flammable liquids or combustible liquids has to be repaired, it shall be removed and taken to maintenance areas when possible. (4) Tags shall be attached to all valves on piping systems that are shut off for maintenance purposes to indicate that such valves are not to be opened. (5) Piping that has been used for the transfer of flammable liquids or combustible liquids shall be removed or capped when it is no longer intended to be used. (6) Connections to pressurized piping systems shall be made in accordance with good engineering practice such as described in (a)  API RP 1107, “Recommended Pipeline Maintenance Welding Practices”, (b)  API 2200, “Repairing Crude Oil, Liquefied Petroleum Gas and Product Pipelines”, or (c)  API RP 2201, “Safe Hot Tapping Practices in the Petroleum and Petrochemical Industries”. Removal of piping
4.4.11.8. The removal, abandonment in place, disposal or temporary taking out of service of an underground piping system shall be performed in accordance with good engineering practice. SECTION 4.5 Fuel dispensing stations Subsection 4.5.1. Storage, handling and use of flammable liquids and combustible liquids Storage, handling and use
4.5.1.1. The storage, handling and use of flammable liquids
and combustible liquids at fuel dispensing stations shall comply with Section 4.6 of Division B of NRC, “National Fire Code of Canada”. SECTION 4.6 BULK PLANTS Subsection 4.6.1. Application Application
4.6.1.1. This Section applies to that portion of a property where flammable
liquids or combustible liquids
are received in bulk quantities and are stored or handled for the purpose of being distributed. Subsection 4.6.2. Storage Storage
4.6.2.1. (1) Flammable liquids and combustible liquids shall be stored in (a)  closed containers in conformance with Article 4.6.2.4., or (b)  storage tanks
in conformance with Section 4.3. Storage tanks
4.6.2.2. At bulk plant rail loading and unloading facilities, the minimum distance from a storage tank to a railway line shall be in conformance with
Flammable Liquids Bulk Storage Regulations made under the Canada Transportation Act. Hydraulic pressure shock
4.6.2.3. Bulk storage tanks, piping, pumps, valves and associated components shall be designed, installed and maintained to accommodate hydraulic pressure shock on the system. Container storage
4.6.2.4. (1) Containers for flammable liquids or combustible liquids stored indoors shall be stored in conformance with Subsection 4.2.7. (2) Containers for flammable liquids or combustible liquids stored outdoors shall be stored in conformance with Subsection 4.2.11., except that the distance between the piles and property lines and the distance between piles need not apply when the containers are stored in an area that does not present a hazard to neighbouring property. Spill control
4.6.2.5. An outdoor storage area shall be designed to accommodate accidental spillage in conformance with Subsection 4.1.6. Fencing
4.6.2.6. (1) An outdoor area used for aboveground storage tanks, container storage, ancillary equipment and unloading facilities for flammable liquids or combustible liquids
shall be surrounded by a firmly anchored fence that is (a)  substantially constructed to discourage climbing and unauthorized entry, (b)  not less than 1.8 m high, and (c)  provided with gates that shall be locked when the storage area is not staffed. Subsection 4.6.3. Dispensing Interconnection
4.6.3.1. Dispensing systems for Class I liquids shall not be interconnected with dispensing systems for Class II and IIIA liquids. Dispensing into vehicles
4.6.3.2. (1) Dispensers serving the general public for dispensing flammable liquids or combustible liquids into fuel tanks of vehicles shall not be located at a bulk plant unless separated by a fence or equivalent barrier from the area in which the bulk storage operations are conducted. (2) Where a dispenser referred to in Sentence (1) is supplied from an aboveground storage tank, (a)  an automatically operated valve, that is designed to open only when the dispenser is being operated, shall be provided at the tank outlet, and (b)  an emergency valve that complies with CAN/ULC-S651, “Standard for Emergency Valves for Flammable and Combustible Liquids” shall be installed in the supply line so that the shear point of the valve is not higher than the base of the dispenser and not lower than 25 mm below the base of the dispenser. Dispensing and transfer inside buildings
4.6.3.3. Class I liquids shall be dispensed or transferred inside buildings
only in conformance with Subsections 4.1.7. and 4.1.8. Dispensing into metal containers or tanks
4.6.3.4. Class I liquids shall not be dispensed into a metal container or storage tank unless it is electrically connected in conformance with Article 4.1.8.2. Subsection 4.6.4. Loading and Unloading Facilities Clearances
4.6.4.1. (1) At a loading or unloading facility for tank vehicles or tank cars, the horizontal distance from the fill stem to an aboveground storage tank, a building or a property line shall be not less than (a)  7.5 m for Class I liquids, and (b)  4.5 m for Class II and IIIA liquids. (2) At bulk plant rail loading and unloading facilities, the minimum distance from a loading structure to a railway line shall be in conformance with Flammable Liquids Bulk Storage Regulations made under the Canada Transportation Act. (3) Buildings
for the shelter of personnel or pumps shall be considered a part of the loading or unloading facility. Multi-purpose facilities
4.6.4.2. When piping and pumping systems have been used for the transfer of either flammable
liquids or combustible liquids
at loading or unloading facilities, the system shall be cleaned of vapours before the other class of liquid is introduced. Backflow preventers
4.6.4.3. (1) Systems through which tank cars or tank vehicles discharge into storage tanks by means of a pump shall be provided with backflow preventers located to prevent spills and inadvertent mixing of liquids. (2) Systems referred to in Sentence (1) shall be designed, installed and maintained to prevent leakage or spillage. Control valves
4.6.4.4. (1) Valves installed to control the filling of tank vehicles or tank cars shall be of the self-closing type. (2) Control valves referred to in Sentence (1) shall be held open manually, except where automatic devices are provided for shutting off the flow in order to prevent the overfilling of tank vehicle or tank car compartments. Bonding and grounding
4.6.4.5. (1) Bonding, grounding and isolation components for protection against static charges during the loading of tank vehicles or tank cars shall be provided when transferring flammable liquids or combustible liquids. (2) Where flammable liquids or combustible liquids are transferred into railway tank cars, railway tracks shall be bonded throughout their length and permanently grounded in conformance with Railway Prevention of Electric Sparks Regulations made under the Canada Transportation Act. (3) Bonding required in Sentence (1) shall consist of a metallic bond wire connected to the fill stem or to some part of the loading structure in electrical contact with the fill stem in conformance with Subsection 4.1.4. (4) Bonding wires for tank vehicles shall be provided with a pull-off connector attached so as to be in electrical contact with the cargo tank of the tank vehicle. (5) The bonding connection required in Sentence (1) shall be fixed to the tank vehicle or storage tank before dome covers are raised and shall remain in place until filling is completed and all dome covers have been closed and secured. Downspouts
4.6.4.6. Except as provided in Sentence 4.1.8.2.(2), when tank vehicles or tank cars are filled with Class I or II liquids through the top of the tank, the fill pipe shall terminate within 150 mm of the bottom of the tank. Subsection 4.6.5. Fire Protection Portable extinguishers
4.6.5.1. At least two portable extinguishers, each having a rating of not less than 80B:C, shall be provided at hazardous locations in bulk storage plants for flammable
liquids and combustible liquids. Subsection 4.6.6. Spill Control Spill control
4.6.6.1. Facilities to control possible spills of flammable liquids or combustible liquids
shall be provided at loading and unloading points in conformance with Subsection 4.1.6. SECTION 4.7 PIERS AND WHARVES Subsection 4.7.1. Application Application
4.7.1.1. This Section applies to flammable liquid
and combustible liquid installations on piers and wharves, but does not include marine fuel dispensing stations. Subsection 4.7.2. General Clearances
4.7.2.1. (1) Piers and wharves where cargos of flammable liquids or combustible liquids are transferred in bulk quantities to or from tanks of marine vessels shall be not less than 30 m from (a)  any bridge over a navigable waterway, and (b)  an entrance to a superstructure of any vehicular or railroad tunnel under a waterway. (2) The termination of fixed piping for loading and unloading flammable liquids or combustible liquids
shall be not less than 60 m from a bridge or from an entrance to a tunnel. Construction
4.7.2.2. The substructure and deck of a pier or wharf shall be designed for its intended use and shall be of heavy timber construction or other material that will provide adequate flexibility, resistance to shock, durability, strength and fire resistance. Subsection 4.7.3. Storage Tanks Installation
4.7.3.1. (1) Except as permitted in Sentences (2) and (3), storage tanks
shall be installed on shore in conformance with Subsections 4.3.2. to 4.3.7. (2) Storage tanks are permitted to be located in buildings
on piers and wharves of solid-fill or noncombustible construction provided they conform to Subsections 4.3.12. to 4.3.14. (3) Storage tanks are permitted to be buried in piers and wharves of the solid-fill type provided they conform to Subsections 4.3.8. to 4.3.11. Subsection 4.7.4. Piping, Valves and Fittings Installation and materials
4.7.4.1. The method of installation and materials used for piping, valves and fittings shall conform to Section 4.4. Pipe supports