25 Pa. Code § 285.122 - Storage tanks
(a) Municipal
waste storage tanks shall have sufficient shell strength to ensure that they do
not collapse or rupture. Municipal waste may not be placed in a tank if the
waste could cause the tank or its inner liner to rupture, leak, corrode or
otherwise fail.
(b) A person or
municipality that stores municipal waste in a tank shall inspect the tank
during construction or installation for uniformity, damage and
imperfections.
(c) If there is
evidence of failure of a municipal waste storage tank, the tank shall be
immediately removed from service. A tank may not be restored to service unless
it has been repaired. The repairs shall be supervised by a registered
professional engineer and certified, in writing, to the Department, unless
otherwise approved by the Department.
(d) A person or municipality that maintains
an uncovered municipal waste storage tank shall provide at least 2 feet of
freeboard unless the tank is equipped with one of the following:
(1) A secondary containment system.
(2) An automatic feed cutoff system or an
overflow warning system and an overflow device to a standby tank with a
capacity equal to or exceeding the volume of the top 2 feet of the uncovered
tank.
(e) Subsurface
tanks used for liquid waste storage shall be hydrostatically tested annually
and when there is evidence of a leak. Other methods of tank testing may be
approved by the Department, in writing.
(f) A person or municipality that stores
liquid municipal waste in aboveground tanks or partially aboveground tanks
shall build and maintain a containment structure which is designed and located
so that it is capable of holding a volume that does the following:
(1) Equals or exceeds the largest aboveground
tank volume.
(2) Has reasonable
allowance for precipitation based on local weather conditions.
(g) A person or municipality
storing municipal waste in an enclosed tank utilizing a continuous or
direct-feed mechanism shall maintain an automatic feed cutoff system or an
overflow warning system.
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