Code of practice for storage tank systems containing petroleum and allied products: part 5
Part 5: design and installation of new piping systems
Section 5.1 : scope
5.1.1 This part applies to the design and installation of piping associated with a storage tank system.
Section 5.2 : general requirements
5.2.1(1) Piping materials shall, as applicable, be designed, built, and approved in conformance with the following:
- ASTM A 53, "Pipe, Steel, Black and Hot-Dipped, Zinc-Coated,Welded and Seamless";
- Canada/Canadian Standards Association (CAN/CSA) Z245.1-98, "Steel Line Pipe";
- a.Canada/Underwriters' Laboratories of Canada (CAN/ULC)-S633-1999, "Flexible Underground Hose Connectors";
- ORD-C107.7-1993, "Glass-Fibre Reinforced Plastic Pipe and Fittings";
- ORD-C107.4-1992, "Ducted Flexible Underground Piping Systems";
- ORD-C107.14-1992, "Non-Metallic Pipe and Fittings"; or
- ORD-C536-1998, "Flexible Metallic Hose".
5.2.2 Except as provided in this part, the design and installation of piping shall be in conformance with the National Fire Code of Canada (NFCC).
5.2.3 Except as provided in this part, the design and installation of piping connected to an oil-burning appliance and equipment that comes within the scope of the Canadian Standards Association (CSA) Standard B139, "Installation Code for Oil Burning Equipment" shall be in conformance with that Code.
5.2.4 Piping material shall be installed and maintained in accordance with an approved standard, code, or in a manner acceptable to the authority having jurisdiction.
5.2.5 Single-wall piping shall not have buried or concealed mechanical joints. (See appendix B, note B.5.2.5)
5.2.6 Leak detection testing and monitoring of piping shall be in conformance with part 6.
5.2.7 A thermal relief valve shall discharge into the low pressure side of the piping.
5.2.8(1) Piping located below the maximum product level in a tank shall be provided with a means to prevent the release of liquid from the tank by syphon flow.
5.2.8(2) Except as provided in sentence 5.2.8(3), a manual shut-off valve shall be lockable or have a method of locking.
5.2.8(3) A manual shut-off valve on the piping connecting a storage tank and a heating appliance or a stationary combustion engine does not need to be lockable or have a method of locking.
Section 5.3: product transfer
5.3.1 The fill pipe on a storage tank with a capacity of 5 000 L or more shall be equipped for the attachment of a liquid and vapour-tight connection at the time of filling and shall be sealed with a liquid- and vapour-tight cap when not in use.
5.3.2 The suction tube of a used oil tank shall be equipped for the attachment of a liquid-tight fitting and shall be sealed with a liquid-tight cap when not in use.
Section 5.4: design standard for underground piping systems
5.4.1 Underground piping up to and including 75 mm in diameter shall have se condary containment in accordance with sentence 5.4.4(1).
5.4.2(1) Underground piping larger than 75 mm in diameter shall be designed, installed and maintained to meet the requirements of:
- secondary containment in conformance with sentence 5.4.4(1);
- leak detection in conformance with part 6; or
- American Petroleum Institute (API) RP 1632-96, "Cathodic Protection of Underground Storage Tank and Piping Systems" and API Std 2610-94, "Design, Construction, Operation, Maintenance and Inspection of Terminal and Tank Facilities".
5.4.3(1) Non-metallic piping may be used for underground installations provided the piping and fittings are designed, built, and approved in conformance with the requirements of:
- ORD-C107.7-1993, "Glass Fibre Reinforced Plastic Pipe and Fittings," or
- ORD-C107.4-1992, "Ducted Flexible Underground Piping Systems."
5.4.4(1) Secondary containment for underground piping shall:
- be designed, built, and approved in conformance with ORD-C107.7-1993, "Glass-Fibre Reinforced Plastic Pipe and Fittings";
- be designed, built, and approved in conformance with ORD-C107.4-1992, "Ducted Flexible Underground Piping Systems";
- consist of a single-wall fibreglassreinforced plastic, or single-wall steel piping, contained within a duct designed, built, and approved in conformance with ORD-C107.19-1992, "Secondary Containment of Underground Piping"; or
- be double-wall steel piping provided with a cathodic protection system designed by a corrosion expert.
5.4.5(1) Secondary containment systems for piping shall be designed and installed such that leaks:
- accumulate in a containment sump that is readily available for visual inspection; or
- are detected by a monitoring system.
Section 5.5: installation
5.5.1 Piping shall be installed by a company or individual that is authorized by the authority having jurisdiction.
5.5.2 Piping shall be located and maintained to permit the eventual removal of the piping when the storage tank system is permanently withdrawn from service.
5.5.3 Piping shall be located in a manner that will prevent allowable design stress from being exceeded.
5.5.4 Piping located aboveground shall be protected from physical damage due to impact.
Report a problem or mistake on this page
- Date modified: