B-1.1, r. 2 - Construction Code

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8.84. Underground piping must, before being connected to a tank, be subjected to a leak test conducted in compliance with the following requirements:
(1)  for the inner wall,
(a)  the ends of the pipes must be hermetically plugged;
(b)  the pressure created inside the piping must be measured using a pressure gauge calibrated in units of not more than 10 kPa;
(c)  air or nitrogen hydrostatic pressure of not less than 350 kPa and not more than 700 kPa must be applied;
(d)  each connection or accessible part of the piping must be tested before being backfilled, using leak detection fluid;
(e)  once the temperature has been stabilized and the pressure source removed, the pressure created must be maintained for at least one hour; and
(f)  if the piping is designed to be exclusively used as suction piping, it must be leak tested according to the manufacturer’s instructions; and
(2)  for the outer wall of double-walled piping, the leak test must be conducted according to the manufacturer’s instructions.
O.C. 220-2007, s. 1; 87-2018O.C. 87-2018, s. 36.
8.84. Underground piping must, before being connected to a tank, be subjected to a leak test conducted in compliance with the following requirements:
(1)  for the inner wall,
(a)  the ends of the pipes must be hermetically plugged;
(b)  the pressure created inside the piping must be measured using a pressure gauge calibrated in units of not more than 10 kPa;
(c)  air or nitrogen hydrostatic pressure of not less than 350 kPa and not more than 700 kPa must be applied; despite the foregoing, the suction piping that is to contain fuel oil or motor fuel to supply a generator engine and that is referred to in CSA Standard B139 Installation Code for Oil Burning Equipment, published by the Canadian Standards Association, may be vacuum tested under at least 68 kPa;
(d)  each connection or accessible part of the piping must be tested before being backfilled, using leak detection fluid;
(e)  once the temperature has been stabilized and the pressure source removed, the pressure created must be maintained for at least one hour; and
(f)  if the piping is designed to be exclusively used as suction piping, it must be leak tested according to the manufacturer’s instructions; and
(2)  for the outer wall of double-walled piping, the leak test must be conducted according to the manufacturer’s instructions.
O.C. 220-2007, s. 1.