Code of practice for storage tank systems containing petroleum and allied products: part 1


Part 1: application and definitions

Section 1.1: application

1.1.1(1) Unless otherwise permitted by the authority having jurisdiction, the owner of a storage tank system shall comply with the provisions of this code.

1.1.1(2) When additional environmental, public health, or safety concerns have been identified, the authority having jurisdiction may require measures above and beyond the provisions of this code.

1.1.2 Except as provided in article 1.1.3(1), this code applies to aboveground and underground storage tank systems used for the storage of petroleum and allied petroleum products.

1.1.3(1) This code does not apply to:

  1. a storage tank system containing raw production petroleum and allied petroleum products;
  2. a storage tank system located within the fence line of a refinery or in an area contiguous with the refinery process units;
  3. an aboveground storage tank system having a capacity of 2 500 L or less that is connected to a heating appliance or emergency generator; or
  4. a mobile tank.

1.1.4 Notwithstanding the requirements of parts 7 and 8, an owner or operator shall not directly or indirectly cause or allow a leak or spill of petroleum or allied petroleum products from a storage tank system or vehicle.

Section 1.2: equivalents

1.2.1 The provisions of this code are not intended to limit the appropriate use of materials, systems, or equipment not specifically described herein.

1.2.2 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 to the authority having jurisdiction that these alternatives are equivalent to those specifically described herein and will perform in an equivalent manner acceptable to the authority having jurisdiction.

Section 1.3: alternatives

1.3.1 Alternatives to the materials, systems, equipment, and procedures or standards specified in this code may be used if the authority having jurisdiction is satisfied that those alternatives provide a level of performance, public health, safety, or environmental protection that is equivalent to or exceeds the levels of performance or protection provided by this code.

Section 1.4: definitions

1.4.1 Words and phrases that are not included in the list of defined terms in this part shall have the meanings that are commonly assigned to them in the context in which they are used in this code, taking into account the specialized use of terms by various trades and professions to which the terminology applies.

1.4.2 The words and terms that are in italics (refer to PDF version) in this code shall have the following meanings unless otherwise indicated by the context:

Abandoned or abandonment

means a storage tank system that has been out-of-service for more than one year.

Aboveground storage tank

means a storage tank with all the storage tank volume above grade.

Aboveground storage tank system

means one or more commonly connected aboveground storage tanks including all connected piping, both aboveground and underground, pumps, dispensing, and product transfer apparatus, dyking, overfill protection devices, and associated spill containment and collection apparatus.

Allied petroleum product

means a mixture of hydrocarbons other than a petroleum product that may be water miscible and may have a density greater than water, and includes the following (See appendix B, note B.1.4.2 Allied Petroleum Product):

  1. Thinners and solvents used by the paint and varnish industry specified under the Canadian General Standards Board (CGSB):

    Canada/Canadian General Standards Board (CAN/CGSB)-1.124-99 Thinner for Vinyl Coatings
    CAN/CGSB-1.136-92 Antiblush Thinner for Cellulose Nitrate Lacquer
    CAN/CGSB-1.2-89 Boiled Linseed Oil
    CAN/CGSB-1.4-2000 Petroleum Spirits Thinner
    CAN/CGSB-1.70-99 High Solvency Thinner
    CAN/CGSB-1.94-M89 Xylene Thinner (Xylol)
    CAN/CGSB-1.110-M91 General Purpose Thinners for Lacquers
    CAN/CGSB-1.164-92 Solvent for Vinyl Pretreatment Coating

  2. Solvents and chemicals used by chemical and manufacturing industry specified under CGSB (15), and benzene and toluene:

    CAN/CGSB-15.50-92 Technical Grade Acetone
    CAN/CGSB-15.52-92 Methyl Ethyl Ketone,Technical Grade

  3. Inks used by printing industry specified under CGSB (21):

    CAN/CGSB-21.1-93 Offset Lithographic Printing Ink

  4. Products specified under CGSB (3):

    3-GP-525Ma Isopropanol
    3-GP-531M Methanol, Technical Grade
    3-GP-855M Ethylene Glycol, Uninhibited

Alter or alteration

means to enlarge, reduce, refurbish, upgrade, or remove a storage tank system.

Approved

means, when used in reference to a storage tank, component, or accessory, that the product has been investigated by a testing agency, accredited by the Standards Council of Canada, or is acceptable to the authority having jurisdiction and has been found to comply with specific requirements and is identified with an authorized marking of the testing agency, as appropriate.

Authority having jurisdiction

means the federal, provincial, or territorial officer(s) with the legal authority to regulate storage tank systems in the area of interest. (See appendix A.)

Cathodic protection or cathodically protected

means a method of reducing or preventing corrosion of a metal surface by making that surface the cathode of an electrochemical cell.

Combustible liquid or product

means any liquid having a closed cup flash point at or above 37.8 °C and below 93.3 °C.

Contingency plan

means planned procedures for reporting, containing, removing, and cleaning up a spill or leak.

Construction

means erection or installation.

Containment sump

means a dispenser, pump, transition, or turbine sump.

Corrosion

means the deterioration of a metal resulting from a reaction with its environment.

Corrosion expert

means a person recognized by NACE International (formerly the National Association of Corrosion Engineers) as a corrosion specialist, cathodic protection specialist, or a registered professional engineer experienced in corrosion protection.

Corrosion protection

means a method of reducing or preventing corrosion of a storage tank system through cathodic protection, the application of protective coatings, or the use of a non-corroding material in its construction.

Day

means any continuous 24 hour period.

Discharge

means releasing, spilling, leaking, pumping, pouring, emitting, emptying, or dumping of petroleum or allied petroleum products into the environment, whether intentional or unintentional.

Dispenser sump

means a container located underneath or near a dispenser or self-contained suction pump that collects or contains leaks.

Effective date

means the date this code is adopted by an authority having jurisdiction or a date specified by an authority having jurisdiction.

Empty

means to remove the contents of a storage tank system as far as is practicable by such means as draining, suction, pouring, or pumping.

Existing

means that which was in place or commenced operation on or before the effective date of this code.

Flammable liquid or product

means any liquid having a closed cup flash point below 37.8 °C and a vapour pressure not exceeding 275.8 kPa (absolute) at 37.8 °C.

Flash point

means the minimum temperature at which a liquid within a container gives off vapour in sufficient concentration to form an ignitable mixture with air near the surface of the liquid.

Free oil

means the non-soluble, non-emulsified petroleum and allied petroleum product layer that accumulates in an oil-water separator.

Fuel oil

means kerosine or any hydrocarbon oil as classified in CAN/CGSB-3.2-99, "Fuel Oil, Heating" and CAN/CGSB-3.3-99, "Kerosine".

Handling

means the storing, transmitting, transporting, or distributing of petroleum or allied petroleum products and includes putting petroleum products into a container or into the fuel tank of a motor vehicle, vessel, or aircraft.

Impermeable barrier

means a secondary storage tank wall, synthetic membrane liner, or other equivalent material in conformance with this code.

Internal coating

means a coating or lining of a noncorrodible material bonded firmly to the interior surface of a storage tank that does not chemically or physically degrade when in contact with the petroleum or allied petroleum products stored therein.

Interstitial space

means the space between the primary storage tank or piping wall and the impermeable barrier within a secondary containment system. (See appendix B, note B.1.4.2 Interstitial space)

Leak

means any loss of liquid petroleum or allied petroleum products because of a defect in a storage tank system.

Leak detection

means a device or method that is capable of detecting leaks in a storage tank system.

Liner

means a material used as the outer barrier of a secondary containment system, but does not include the outer wall of double-wall piping or storage tanks.

Line-leak detector

means a device used in pressure piping systems to detect a leak in the piping.

Mobile tank

means a mobile refueling tank as described by ORD-C142.13-1977, Mobile Refueling Tanks.

Motive fuel

means any fuel used to power a vehicle, aircraft, or vessel.

Oil-water separator

means a device for collecting and separating non-soluble, non-emulsified petroleum and allied petroleum products from water.

Operator

means the person who is responsible for the day-to-day operation of an installation where an aboveground or underground storage tank is located or, when referring to a vehicle, the driver in charge of the vehicle.

Out-of-service

means that a storage tank system or portion thereof is no longer serving its intended use.

Overfill protection device

means a mechanical device, electrical device, or fill procedure system that is intended to prevent a storage tank from being overfilled.

Owner

means the Crown, an institution, corporate entity, Indian band, government department or agency, or a person who has legal owner ship of the storage tank system or who has been assigned custody to control, care for, manage, or dispose of the storage tank system.

Petroleum product

means a single product or mixture of at least 70% hydrocarbons, by volume, refined from crude oil, with or without additives, that is used, or could be used, as a fuel, lubricant, or power transmitter and without restricting the foregoing, such products include gasoline, diesel fuel, aviation fuel, kerosine, naphtha, lubricating oil, fuel oil, engine oil and used oil, and exclude propane, paint, and solvents.

Piping

means fuel conduits, including fittings and valves that are necessary for the safe handling and storage of petroleum products and allied petroleum products and are specified by a nominal inside diameter.

Precision leak detection test

means a test capable of detecting a storage tank leak as small as 0.38 L/h with a probability of detection of 0.95 or greater and a probability of false alarm of 0.05 or less, within a period of 24 hours, accounting for variables such as vapour pockets, thermal expansion of product, temperature stratification, groundwater level, evaporation, pressure and end deflection.

Pressure liquid media leak detection test

means a test utilizing a device to pressurize piping with a suitable test liquid to determine the presence of leaks.

Product transfer area

means the area around the connection point between a delivery truck, railcar, or vessel and a storage tank system with a capacity of 2 500 L or more.

Protected

means having impact, projectile, and fire resistance qualities for an aboveground storage tank system.

Protective coating

means a coating applied to a surface to protect the substrate from corrosion.

Secondary containment

means an impermeable barrier that prevents leaks from the primary storage tank system from reaching outside the containment area.

Separated solid

means the particulate material that settles at the bottom of an oil-water separator.

Site

means a lot or property where there is one or more underground storage tank systems within 100 m of each other, or one or more aboveground storage tank systems within 200 m of each other, and all storage tanks on the property are owned by the same owner(s).

Sludge

means the petroleum or allied petroleum product residue or material that accumulates at the bottom of a storage tank.

Spill

means any loss of liquid petroleum or allied petroleum product from a storage tank system that is not attributable to a leak in the storage tank system.

Spill containment device

means a container fitted to the inlet of a storage tank or to the suction coupling of a used oil storage tank that helps prevent spills from entering the environment.

Static liquid media leak detection test

means a leak detection test in which a suitable test liquid is placed into the containment device and is monitored for a change in the liquid level and the rate of change.

Storage tank

means a closed container for the storage of petroleum or allied petroleum products with a capacity of more than 230 L that is designed to be installed in a fixed location.

Storage tank system

means a system for the storage and dispensing of petroleum or allied petroleum product and is not limited to storage tanks, associated piping, vents, pumps, and dispensing equipment.

Tank bottom water

means water that accumulates at the bottom of a storage tank.

Underground storage tank

means a storage tank with all of the storage tank volume below grade and the primary tank or double-wall completely surrounded by or in intimate contact with backfill.

Underground storage tank system

means one or more commonly connected underground storage tank(s), including all underground and aboveground connections, piping, pumps, and dispensers.

Used oil

means oil from industrial and non-industrial sources that has been acquired for lubricating or other purposes and has become unsuitable for its original purpose due to the presence of impurities or the loss of original properties. Used oil does not include oils derived from animal or vegetable fats, crude oil or recovered fuel oils spilled onto land or water and wastes from petroleum-refining operations. The following categories of used oil are covered by this code (See appendix B, note B.1.4.2 Used oil ):

  1. lubricating oils (engine, turbine, or gear);
  2. hydraulic fluids (including transmission fluids); and
  3. insulating oils.
Vent

means an opening in a storage tank system that is specifically designed to relieve excess internal pressure or vacuum within a storage tank system.

Section 1.5: reference documents

1.5.1 Where there is a conflict between the provisions of this code and those of a reference document, the provisions of this code shall apply.

1.5.2 Unless otherwise specified herein, the documents listed in table 1 shall include the latest editions, amendments, revisions, and supplements effective to December 31, 2002.

Table 1: reference documents

Issuing agency - American Petroleum Institute
Document number Title of document
API Spec 12B-95 Bolted Tanks for Storage of Production Liquids
API Spec 12D-94 Field Welded Tanks for Storage of Production Liquids
API Spec 12F-94 Shop Welded Tanks for Storage of Production Liquids
API 570-98 Piping Inspection Code: Inspection, Repair, Alteration, and Rerating of In-Service Piping Systems
API Std 650-98 Welded Steel Tanks for Oil Storage
API RP 651-97 Cathodic Protection of Aboveground Petroleum Storage Tanks
API RP 652-97 Lining of Aboveground Petroleum Storage Tank Bottoms
API Std 653-01 Tank Inspection, Repair, Alteration, and Reconstruction
API RP 1632-96 Cathodic Protection of Underground Storage Tank and Piping Systems
API RP 2350-96 Overfill Protection for Storage Tanks in Petroleum Facilities
API Std 2610-94 Design, Construction, Operation, Maintenance and Inspection of Terminal and Tank Facilities



Issuing agency - Canadian Council of Ministers of the Environment
Document number Title of document
CCME PN 1057 Environmental Code of Practice for Vapour Recovery in Gasoline Distribution Networks (1991)
CCME PN 1180 Environmental Guideline for Controlling Emissions of Volatile - Organic Compounds from Aboveground Storage Tanks (1995)
CCME PN 1299 Canadian Environmental Quality Guidelines (1999)
CCME CWS for PHC Canada-wide Standards for Petroleum Hydrocarbons in Soil (2001)



Issuing agency - Canadian General Standards Board
Document number Title of document
CAN/CGSB-1.124-99 Thinner for Vinyl Coatings
CAN/CGSB-1.136-92 Antiblush Thinner for Cellulose Nitrate Lacquer
3-GP-525M Isopropanol
3-GP-531M Methanol, Technical
3-GP-855M Ethylene Glycol, Uninhibited
CAN/CGSB-15.50-92 Technical Grade Acetone
CAN/CGSB-15.52-92 Methyl Ethyl Ketone, Technical Grade
CAN/CGSB-21.1-93 Offset Lithographic Printing Ink
CAN/CGSB-1.2-89 Boiled Linseed Oil
CAN/CGSB-1.4-2000 Petroleum Spirits Thinner
CAN/CGSB-1.70-99 High Solvency Thinner
CAN/CGSB-1.94-M89 Xylene Thinner (Xylol)
CAN/CGSB-1.110-M91 General Purpose Thinners for Lacquers
CAN/CGSB-1.164-92 Solvent for Vinyl Pretreatment Coating
CAN/CGSB-3.2-99 Fuel Oil, Heating
CAN/CGSB-3.3-99 Kerosine



Issuing agency - Canadian Petroleum Products Institute
Document number Title of document
CPPI/PACE Report 87-1 Impressed Current Method of Cathodic Protection of Underground Petroleum Storage Tanks
CPPI (1995) Using the CPPI Colour-Symbol System to Mark Equipment and Vehicles January 1990 for Product Identification
CPPI (1992) Professional Driver's Manual
CPPI Code of Practice for Management of Water Effluent Quality at Petroleum Storage and Distribution Facilities
CPPI (2000) Recommended Practices: Operation of Shop-Fabricated Aboveground Petroleum Storage Tank Systems



Issuing agency - Canadian Standards Association
Document number Title of document
CAN/CSA-B139-00 Installation Code for Oil Burning Equipment
CAN/CSA-Z245.1-98 Steel Line Pipe



Issuing agency - Environmental Protection Agency
Document number Title of document
EPA/530/UST-90/007 Standard Test Procedures for Evaluating Leak Detection Methods: Statistical Inventory Reconciliation Methods
EPA 510-B-95-009 Introduction to Statistical Inventory Reconciliation



Issuing agency - NACE International
Document number Title of document
NACE RP0169-2002 Control of External Corrosion on Underground or Submerged Metallic Piping Systems
NACE RP0285-2002 Corrosion Control of Underground Storage Tank Systems by Cathodic Protection.
NACE RP0193-2001 External Cathodic Protection of On-Grade Carbon Steel Storage Tank Bottoms
NACE TM0101-2001 Measurement Techniques Related to Criteria for Cathodic Protection on Underground or Submerged Metallic Tank Systems
NACE No. 10/SSPC-PA6 Fiberglass-Reinforced Plastic (FRP) Linings Applied to Bottoms of Carbon Steel Aboveground Storage Tanks



Issuing agency - National Research Council
Document number Title of document
NRCC 38727 National Fire Code of Canada (NFCC) - 1995



Issuing agency - Steel Tank Institute
Document number Title of document
STI SP001-00 Standard for Inspection of In-service Shop Fabricated Aboveground Tanks for the Storage of Flammable and Combustible Liquids.
STI R831-98 Optional Recommended Practice for Control of Localized Corrosion Within Underground Steel Petroleum Storage Tanks.
STI R893-89 Recommended Practice for External Corrosion Protection of Shop Fabricated Aboveground Tank Floors.
STI RP011-01 Recommended Practice for Anchoring of Steel Underground Storage Tanks.



Issuing agency - Underwriters' Laboratories of Canada
Document number Title of document
ULC-S601-2000 Aboveground Horizontal Shop Fabricated Steel Tanks
ULC-S601(A)-2001 Shop Refurbishing of Aboveground Horizontal Shop Fabricated Steel Tanks
CAN/ULC-S602-1992 Aboveground Steel Tanks for Fuel Oil and Lubricating Oil
CAN/ULC-S603-1992 Underground Steel Tanks
CAN/ULC-S603.1-1992 Galvanic Corrosion Protection Systems for Underground Tanks
ULC-S603(A)-2001 Refurbishing of Underground Steel Tanks
ULC-S615-1998 Underground Reinforced Plastic Tanks
ULC-S615(A)-1987 Refurbishing of Underground Reinforced Plastic Tank
ULC-S618-2000 Magnesium and Zinc Anodes and Zinc and Copper/copper Sulpate Reference Electrodes
ULC-S630-2000 Aboveground Vertical Shop Fabricated Steel Tanks
ULC-S630(A)-2001 Shop refurbishing of Aboveground Vertical Shop Fabricated Steel Tanks
CAN/ULC-S633-1999 Flexible Underground Hose Connectors
CAN/ULC-S643-2000 Aboveground Shop Fabricated Steel Utility Tanks
CAN/ULC-S651-2000 Emergency Valves
ULC-S652-1993 Tank Assemblies for Collection of Used Oil
ULC-S653-1994 Contained Aboveground Steel Tank Assemblies
ULC-S655-1998 Aboveground Protected Tank Assemblies
ULC-S656-2000 Oil-Water Separators
ORD-C58.9-1997 Secondary Containment Liners for Underground and Aboveground Tanks
ORD-C58.10-1992 Underground Jacketed Steel Tanks
ORD-C58.12-1992 Leak Detection Devices (Volumetric Type) for Underground Storage Tanks
ORD-C58.14-1992 Leak Detection Devices (Nonvolumetric Type) for Underground Storage Tanks
ORD-C58.15-1992 Overfill Protection Devices for Flammable Liquid Storage Tanks
ORD-C58.19-1992 Spill Containment Devices for Underground Tanks
ORD-C58.20-1996 Special Corrosion Protection Underground Tanks
ORD-C80.1-2000 Aboveground Non-Metallic Tanks for Fuel Oil
ORD-C107.4-1992 Ducted Flexible Underground Piping Systems
ORD-C107.7-1993 Glass-Fibre Reinforced Plastic Pipe and Fittings
ORD-C107.12-1992 Line Leak Detection Devices for Flammable Liquid Piping
ORD-107.14-1992 Non Metallic Pipe and Fittings
ORD-C107.19-1992 Secondary Containment of Underground Piping
ORD-C107.21-1992 Under-Dispenser Sumps
ORD-C142.5-1992 Aboveground Concrete Encased Steel Tank Assemblies
ORD-C142.6-2000 Storage Vaults
ORD-C142.13-1997 Mobile Refueling Tanks
ORD-C142.15-2000 Precast Concrete Tanks
ORD-C142.17-1998 Aboveground Special Purpose Relocatable Vertical Tanks
ORD-C142.18-1995 Aboveground Rectangular Steel Tanks
ORD-C142.19-1994 Spill Containment Devices for Aboveground Tanks
ORD-C142.20-1995 Aboveground Secondary Containment Tanks
ORD-C142.21-1995 Aboveground Used Oil Systems
ORD-C142.22-1995 Contained Aboveground Vertical Steel Tank Assemblies
ORD-C142.23-1991 Aboveground Waste Oil Tanks
ORD-C536-1998 Flexible Metallic Hose


Section 1.6: abbreviations

1.6.1 The abbreviations used in this code for the names of associations or other codes shall have the meanings assigned to them in this article. The addresses of the associations or code-sponsoring organizations are provided as follows:

API

American Petroleum Institute
1220 L St N W
Washington DC  20005
Phone: 202-682-8375
Fax: 202-962-4776
Email: publications@API.org

CAN

National Standards of Canada
1200-45 O'Connor St
Ottawa ON  K1P 6N7
Phone: 613-238-3222
Fax: 613-995-4564
Email: info@scc.ca

CCME

Canadian Council of Ministers of the Environment
123 Main St
Winnipeg MB  R3C 1A3
Phone: 204-948-2090
Fax: 204-948-2125

CGSB

Canadian General Standards Board
1402-222 Queen St
Ottawa ON  K1A 1G6
Phone: 819-956-0425
Fax: 819-956-5644
Email: ncr.cgsb-ongc@pwgsc.gc.ca

CPCA

Canadian Petroleum Contractors Association
PO Box 415 Markham ON  L3P 3J8
Phone: 705 735-9437
Fax: 705-735-9418

CPPI

Canadian Petroleum Products Institute
1000-275 Slater St
Ottawa ON  K1P 5H9
Phone: 613-232-3709
Fax: 613-236-4280

CSA

Canadian Standards Association
178 Rexdale Blvd
Toronto On  M9W 1R3
Phone: 416-747-4000
Fax: 416-747-4149
Email: sales@csa.ca

EPA

U.S. Environmental Protection Agency,
Office of Underground Storage Tanks
401 M St S W Mail Code 5401G
Washington DC USA  20460
Phone: 703-603-9900
Fax: 703-603-9163

NACE

NACE International (formerly National Association of Corrosion Engineers)
1440 South Creek Dr
Houston TX USA  77084-4906
Phone: 281-228-6200
Fax: 281-228-6329

NFCC

National Fire Code of Canada, published under the auspices of the National Research Council of Canada
Ottawa ON  K1A 0R6
Phone: 613-993-2463
Fax: 613-952-7673
Email: Irc.Client-Services@nrc.ca

STI

Steel Tank Institute
570 Oakwood Rd
Lake Zurich IL  60047
Phone 847-438-8265
Fax 847-438-8766
Email: wgeyer@steeltank.com

ULC

Underwriters' Laboratories of Canada
7 Crouse Rd
Scarborough ON  M1R 3A9
Phone: 416-757-3611
Fax: 416-757-9540
Email: ulcinfo@ulc.ca

1.6.2 Abbreviations of words and phrases in this code shall have the following meanings:

cm

centimetre(s)

°C

degree(s) Celsius

h

hour(s)

kPa

kilopascal(s)

L

litre(s)

m

metre(s)

min

minute(s)

mL

millilitres

mm

millimetre(s)

mV

millivolt(s)

s

second(s)

µm

micrometre(s) or micron(s)

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