Ariz. Admin. Code § R18-12-244 - Methods of Release Detection for Piping
A. An automatic line leak detection method
for piping used to meet the requirements of
R18-12-241 which alerts the
operator to the presence of a leak by restricting or shutting off the flow of
regulated substances through piping or triggering an audible or visual alarm
may be used only if it detects leaks of three gallons per hour, at 10 pounds
per square inch line pressure within one hour. An annual test of the operation
of the leak detector shall be conducted in accordance with
R18-12-240(A)(3);
B. A periodic line tightness test of piping
may be used as a method of release detection for piping for the purpose of
meeting the requirements of
R18-12-241 only if it can detect a
0.1 gallon per hour leak rate, at one and one-half times the operating
pressure.
C. Except as described in
R18-12-241(A),
any of the applicable tank methods described in
R18-12-243(E) through
(I) may be used as a method of release
detection for piping for the purpose of meeting the requirements of
R18-12-241 if they are designed to
detect a release from any portion of the underground piping that routinely
contains regulated substances.
Notes
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