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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 165. Corporation Commission |
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Chapter 26. Aboveground Storage Tanks |
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Subchapter 2. General Requirements for Aboveground Storage Tank Systems |
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Part 1. DESIGN AND INSTALLATION |
SECTION 165:26-2-8. Installation testing
Latest version.
- (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 manufacturers instructions. Single-wall tanks shall be air tested, soaped, and inspected for bubbling prior to installation.(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.