Oklahoma Administrative Code › Title 165 - Corporation Commission › Chapter 26 - Aboveground Storage Tanks › Subchapter 2 - General Requirements for Aboveground Storage Tank Systems › Part 1 - DESIGN AND INSTALLATION › Section 165:26-2-8 - Installation testing

Current through Vol. 41, No. 20, July 1, 2024
(a) A tightness
				  test must be completed on tank and lines during construction and before being
				  put into service after the lines have been covered.
(1) All aboveground storage tanks must be
				  tested to manufacturer's instructions. Single-wall tanks shall be air tested,
				  soaped, and inspected for bubbling prior to installation. Double-wall tanks
				  with a vacuum on the interstice: Check vacuum gauge to determine if the vacuum
				  meets all minimum requirements set by the tank manufacturer. An air soap test
				  is not required if the interstice vacuum meets tank manufacturer requirements.
(2) Aboveground product piping
				  shall be subjected to an air test of at least 50 psi. The test must have a
				  duration of not less than 60 minutes. All piping joints must be soaped while
				  the system is under pressure, in order to detect any possible leaks. The
				  interstice area of double-wall piping must be tested according to the
				  manufacturer's instructions.
(3)
				  All suction product piping must be tested while disconnected from the pumps,
				  and dispensing units. The piping must be subjected to an air test of at least
				  50 psi. The test must have a duration of not less than 60 minutes. All piping
				  joints must be soaped while the system is under pressure, in order to detect
				  any possible leaks. The interstice area of double-wall piping must be tested
				  according to the manufacturer's instructions
(4) All pressurized piping must be tested
				  while connected to tanks, pumps and dispensing units if installed at the time
				  of installation. The piping must be subjected to an air test of at least 50
				  psi. The test must have a duration of not less than 60 minutes. All piping
				  joints must be soaped while the system is under pressure, in order to detect
				  any possible leaks. The interstice area of double-wall piping must be tested
				  according to the manufacturer's instructions.
(5) All piping should be air tested and
				  monitored continuously during the installation.
(6) All underground pressurized and suction
				  piping must have a precision tightness test performed after all paving over the
				  piping has been completed and before the system is placed in operation. The
				  precision tightness test must be performed by a certified tester, and in
				  accordance with manufacturer's instructions. The product line(s) must be
				  hydrostatic tested by a NWGLDE approved testing device capable of detecting a
				  leak of 0.10 gallons per hour with a test pressure of 50 psi or 1½ times
				  the operating pressure, whichever is greater. The lines must be tested for a
				  minimum of one hour.
(7) Mechanical
				  and electronic leak detector(s) must be tested for function by simulating a
				  leak and operate in accordance with manufacturer's instructions.
(8) If an ATG system with electronic line
				  leak detector(s) is installed it must complete a leak detector test in each of
				  the modes in which it is certified as capable of detecting a leak (e.g. 3gph,
				  0.2gph, and 0.1gph).
(9)
				  Containment sumps must be tested after all piping and conduit has been
				  installed by using vacuum, pressure, or liquid testing in accordance with one
				  of the following criteria:
(A) Requirements
				  developed by the manufacturer (owners and operators may use this option only if
				  the manufacturer has developed requirements);
(B) Code of practice developed by a
				  nationally recognized association or independent testing laboratory, e.g., PEI
				  RP 1200.