Environmental Code of Practice for Aboveground and ... - CCME
Environmental Code of Practice for Aboveground and ... - CCME
Environmental Code of Practice for Aboveground and ... - CCME
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withdrawn from the storage tank is also an<br />
integral part <strong>of</strong> the inventory control system.<br />
Finally, it is necessary to reconcile the<br />
product in storage with the amount recorded<br />
(daily/weekly) as having been withdrawn.<br />
Any continuous discrepancy (shortage) must<br />
be investigated as a possible leak from the<br />
underground storage tank system.<br />
B.8.4.1<br />
(2)(b) Frequent visual inspections <strong>of</strong> an<br />
aboveground storage tank system is required<br />
to provide early detection <strong>of</strong> equipment<br />
failures <strong>and</strong> product spills. The authority<br />
having jurisdiction may decide that<br />
operators <strong>of</strong> tanks <strong>of</strong> 5000 L <strong>and</strong> less<br />
capacity do not have to do daily checks. In<br />
addition, it may not be possible or practical<br />
to inspect a storage tank at unattended<br />
remote sites.<br />
B.8.5.2<br />
(1)(b) The NFCC requires that a vehicle operator<br />
remain in close proximity to the discharge<br />
control valve. There is concern that a vehicle<br />
operator may interpret ‘close proximity’ to<br />
include sitting in the cab <strong>of</strong> the tank vehicle,<br />
out <strong>of</strong> sight <strong>of</strong> the delivery point. Many<br />
overfills occur because the tank vehicle<br />
operator is not observing the filling<br />
operation <strong>and</strong> is unaware that the storage<br />
tank is overfilling. There<strong>for</strong>e Sentence<br />
8.5.2(1)(b) is more specific <strong>and</strong> requires a<br />
vehicle operator to be more attentive.<br />
B.8.5.3<br />
(2) A significant number <strong>of</strong> the spills that occur<br />
at aboveground storage tank facilities result<br />
from improper procedures during routine<br />
activities. These accidents can be reduced or<br />
eliminated if operating personnel are<br />
properly trained about correct safety<br />
procedures <strong>and</strong> the importance <strong>of</strong> following<br />
them to prevent injury <strong>and</strong> environmental<br />
incidents. Training must be periodically<br />
followed up to ensure that proper procedures<br />
are being followed.<br />
B.8.6.1<br />
(1) Cathodically protected potentials are<br />
required on all parts <strong>of</strong> the tank bottom<br />
in order <strong>for</strong> it to be considered to be<br />
cathodically protected. When a perimeter<br />
anode type cathodic protection system is<br />
used, the potential at the tank centre can<br />
be much different than that measured at the<br />
tank perimeter <strong>and</strong> a corrosion expert should<br />
be consulted<br />
B.8.7 The CPPI “<strong>Code</strong> <strong>of</strong> <strong>Practice</strong> <strong>for</strong><br />
Management <strong>of</strong> Water Effluent Quality<br />
at Petroleum Storage <strong>and</strong> Distribution<br />
Facilities” may be useful <strong>for</strong> anyone who<br />
owns or operates an oil-water separator.<br />
An oil-water separator does not remove the<br />
soluble fraction <strong>of</strong> oil that is in the water or<br />
storm run<strong>of</strong>f. There<strong>for</strong>e, it shall be noted<br />
that even if an oil-water separator produces<br />
an effluent that has an oil <strong>and</strong> grease or<br />
hydrocarbon content that is below provincial<br />
or territorial discharge limits, the effluent<br />
may still be acutely toxic to fish.<br />
It is recommended that the designer shall<br />
ensure that when an oil-water separator is to<br />
be installed that a proper design basis is<br />
used. The owner shall control sources to the<br />
separator <strong>and</strong> remove the free oil layer <strong>and</strong><br />
accumulated separated solids as required by<br />
the manufacturer’s operating instructions.<br />
B.8.7.5 Detergents <strong>and</strong> cleaning solutions cause oil<br />
to emulsify in water <strong>and</strong> prevent effective<br />
separation. Never wash trucks with such<br />
products in areas that drain to an oil-water<br />
separator.<br />
B.8.8.3 At the time <strong>of</strong> a change <strong>of</strong> ownership, an<br />
environmental assessment or investigation<br />
<strong>of</strong> site contamination shall be conducted<br />
on real property on which storage tanks<br />
are located.<br />
47 <strong>Environmental</strong> <strong>Code</strong> <strong>of</strong> <strong>Practice</strong> <strong>for</strong> <strong>Aboveground</strong> <strong>and</strong> Underground Storage Tank Systems Containing Petroleum <strong>and</strong> Allied Petroleum Products
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