[Code of Federal Regulations]
[Title 40, Volume 24]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR280.44]

[Page 467]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
                           AGENCY (CONTINUED)
 
PART 280--TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS FOR OWNERS AND OPERATORS OF UNDERGROUND STORAGE TANKS (UST)--Table of Contents
 
                      Subpart D--Release Detection
 
Sec. 280.44  Methods of release detection for piping.

    Each method of release detection for piping used to meet the 
requirements of Sec. 280.41 must be conducted in accordance with the 
following:
    (a) Automatic line leak detectors. Methods which alert 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 they detect leaks of 3 gallons per hour at 10 
pounds per square inch line pressure within 1 hour. An annual test of 
the operation of the leak detector must be conducted in accordance with 
the manufacturer's requirements.
    (b) Line tightness testing. A periodic test of piping may be 
conducted only if it can detect a 0.1 gallon per hour leak rate at one 
and one-half times the operating pressure.
    (c) Applicable tank methods. Any of the methods in Sec. 280.43 (e) 
through (h) may be used if they are designed to detect a release from 
any portion of the underground piping that routinely contains regulated 
substances.