Standard for Internal Retrofit Systems for Underground Tanks for Flammable and Combustible Liquids

1 SCOPE

1.1 This Standard provides minimum requirements for nonmetallic internal retrofit systems intended for

field installation in underground tanks for the storage of flammable and combustible liquids, such as:

A Petroleum products, including petroleum hydrocarbon fuels with low bio-blends per

specifications and similar flammable or combustible liquid petroleum derivatives, such as fuel

components (cetane, hexane, heptane), and oils (lubricating, hydraulic, machine);

B Oxygenated fuel blends, including all ″petroleum products″ liquids; plus petroleum hydrocarbon

fuels with low-biofuels blends;

C Oxygenates, including all “petroleum product” and ″oxygenated fuel blends″ liquids; plus pure/

denatured or highest oxygenated blend stocks for use in mixing of dispensed lower fuel-blends

and components, such as biodiesel and ethanol; and

D Other flammable and combustible liquids that can be demonstrated to be compatible with the

internal retrofit system materials.

Refer to Appendix A (Informative) for a list of Standards on fuels and other flammable and combustible

liquids.

1.2 These retrofit systems are nonmetallic thermoset (such as fibre reinforced plastic [FRP], epoxy,

polyurethane [PUR] or polyesters) or thermoplastic (such as polyethylene [PE]) materials that may or may

not be bonded to the interior tank wall of the host tank, depending upon the system type. These products

typically use pre-fabricated sections with coatings applied on site, or homogeneous or layered

spray-on/roll-on materials applied on site, and may optionally cover minor repair prior to the installation of

a retrofit system, and the installation of bulkheads to the host tank.

A Lining systems provide only primary containment of stored fuels, and do not add significant

structural strength to the host tank;

B Upgrade systems provide both primary containment and secondary containment of stored fuels

with interstitial monitoring, and are co-structural with the host tank; and

C Structural systems provide both primary containment and secondary containment of stored fuels

with interstitial monitoring. This system may provide a primary containment of stored fuels and

utilizes the host tank as secondary containment of stored fuels with interstitial monitoring, or the

system may provide both primary containment and secondary containment of stored fuels with

interstitial monitoring independent of the host tank.

1.3 Products covered by this Standard are intended to be installed and used in accordance with, but not

limited to, one or more of the following:

A National Fire Code of Canada, Part 4;

B CSA B139, Installation Code for Oil Burning Equipment;

C CCME Environmental Code of Practice for Aboveground and Underground Storage Tank

Systems Containing Petroleum and Allied Petroleum Products; and

D Regulations of the appropriate authority having jurisdiction.

1.4 These retrofit systems are intended for field installation, only by qualified persons, inside the host tank

without a need for excessive excavation, in accordance with the manufacturer’s instructions and the local

requirements. Prior to installation, cleaning, inspecting, repairing and preparing the host tank interior

surface is also conducted by qualified persons in accordance with the manufacturer’s instructions.

1.5 These retrofit systems are intended to be periodically inspected and maintained for continued service,

or taken out of service if deemed necessary by qualified persons in accordance with industry

recommended practices, the manufacturer’s instructions or applicable regulations.

1.6 These retrofit systems and the manufacturer’s installation instructions have not been investigated for

their physiological effect, if any, for safety of any persons during the installation process, and the potential

risk associated with the opening, entering, purging, cleaning, inspecting, surface preparation, system

installation, and testing of a tank that has been used to store flammable or combustible liquids.

1.7 These retrofit systems and requirements are not intended to cover or evaluate the installation

equipment, safety of the installer, compliance with worker safety regulations (such as confined spaces or

hazardous locations), or any environmental emissions or disposal regulations.

1.8 These retrofit systems have not been evaluated for use after natural disasters, or exposures to

chemicals not representative of the test liquids or excessive physical damage beyond the expected

installation and uses as identified in these requirements.

1.9 This Standard does not cover additional claims, if any, related to the effect, if any, of the product’s

materials on fuel quality or properties.