.

2. REGULATORY
REQUIREMENTS
Companies and persons working with propane are regulated to
ensure the safe handling, transferring, and use of propane .
Regulatory requirements for training, certification, sale,
installation and use of propane may appear in Ontario Technical
Standards and Safety Authority Regulation.
Contravention of the Regulations may result in tickets, penalties,
or litigation by the authority having jurisdiction.
Regulations developed by Industry and Government reflect the
proper and safe method of completing tasks
To properly handle transfer propane you need to know the
hazards of the product, the equipment used to store and transfer
propane and proper procedures to follow.

3. CHECKING ANG TESTING
Testing Requirements for Tanks.
 Initial Testing. All tanks, whether shop built or field erected, shall be tested before they
are placed in service in accordance with the applicable requirements of the code under which
they were built.
An approved listing mark on a tank shall be considered to be evidence of compliance
with this requirement. Tanks not marked in accordance with this subsection shall be tested before
they are placed in service in accordance with good engineering principles.
 Tightness Testing. In addition to the tests called for in 4.4.1, all tanks and connections
shall be tested for tightness after installation and before being placed in service accordance
with 2.4.2.2 and 2.4.2.3, as applicable. Except for underground tanks, this test shall be made at
operating pressure with air, inert gas, or water. Air pressure shall not be used to test tanks that
contain flammable or combustible liquids or vapors.
Single wall underground tanks and piping, before being covered, enclosed, or placed in
use, shall be tested for tightness either hydrostatically or with air pressure at not less than 3 psig
and not more than 5 psig.
Underground secondary containment tanks and horizontal aboveground secondary
containment tanks shall have the primary (inner) tank tested for tightness either hydrostatically
or with air pressure at not less than 3 psig and not more than 5 psig.
 Additional Testing. Tanks that have been relocated, structurally damaged, repaired, or
are suspected of leaking shall be tested in a manner acceptable to the authority having the
jurisdiction.

4. DURING PERFORMING THE TASK
 Major Modification Activities :
• Repairing, removing or replacing any part of the tank.
• Replacing or repairing equipment when excavation is required.
• Adding ancillary equipment.
• Installation, repair or replacement of interior (internal) tank lining or coating.
• Installation of corrosion protection systems or anodes on cathodic sacrificial and
impressed current systems.

5.  Minor Modification Activities :
• Staking and placing of concrete forms over the tank field.
• Replacement, repair or removal of aboveground piping associated with the system (excluding
dispenser components).
• Replacement, repair or removal of the check valve in a suction system.
• Replacement or removal of leak detector/pump-manifold (packer) assembly.
• Replacement, removal or disconnection of flexible piping connectors.
• Replacement, removal or disconnection of break-away (shear) valves.
• Replacement or removal of primary piping through extraction from the secondary piping or
double walled piping systems or double wall piping from a tertiary conduit when accessible
from aboveground or through man ways (not involving an excavation).
• Installation or replacement of anode bags or spike anodes to flexible piping connectors.
• Installation or replacement of isolation boots.
• Installation of a line leak detector.
• Changing the type of line leak detector, such as, mechanical to electronic.
• Installation, repair or replacement of overfill prevention devices.
• Installation, repair or replacement of spill containment devices.
• Initial installation or complete replacement of an automatic tank gauging system.
• Replacement of a complete dispensing unit.

6. Maintenance
 Each tank shall be inspected and maintained to ensure compliance with the
requirements of this code. Testing requirements for tanks shall be in accordance
with Section 4.4
 Each tank shall be maintained liquid tight. Each tank that is leaking shall be
emptied of liquid or repaired in a manner acceptable to the authority having
jurisdiction.
 Tanks that have been structurally damaged, have been repaired or
reconstructed, or are suspected of leaking shall be tested in accordance with 4.4.1
or in a manner acceptable to the authority having jurisdiction.
 Tanks and all tank appurtenances, including normal vents and emergency
vents and related devices, shall be properly maintained to ensure that they function
as intended.
 Openings for gauging on tanks storing Class I liquids shall be provided with a
vapor tight cap or cover. Such covers shall be closed when not gauging.

7. CONCLUSION
Underground tank present unique
challenges not experienced with those
installed aboveground. It is important to
make sure this is given careful
consideration in the installation and
inspection of underground systems to
minimize problems and provide
satisfactory service.