1. 1. General. Any notice to the gas system of a leak or odor or notification of damage to gas facilities reported by any source shall constitute the need for immediate action by the gas system. In the event that the response time exceeded one (1) hour, the reason should be included in the report to the ORS as well as the grade level of the leak and other pertinent information.

2. 2. Classification. Each gas system shall establish procedures for classifying and repairing leaks meeting the requirements of this section:

   Grade 1—Grade 1 means a leak that represents an existing or probable hazard to persons or property and requires immediate repair or continuous action until the conditions are no longer hazardous.

   Grade 2—Grade 2 means a leak that is recognized as being nonhazardous at the time of detection but requires scheduled repair based on probable future hazard.

   Grade 3—Grade 3 means a leak that is nonhazardous at the time of detection and can be reasonably expected to remain nonhazardous.

3. 3. Leakage Surveys.

   All buried piping not protected against corrosion in accordance with 49 C.F.R. Section 192, Subpart I, must be subjected to instrument leakage surveys as frequently as necessary, but at intervals not exceeding twelve months.

4. 4. Vegetation Leakage Surveys.

   Vegetation type leak surveys are prohibited.

HISTORY: Amended by State Register Volume 18, Issue No. 3, eff March 25, 1994; State Register Volume 32, Issue No. 5, eff May 23, 2008.