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the area. Request fire/police department assistar.c<_ ?n <br />evacuation efforts if needed. <br />• d. I•f gas service to the affected property has not bee-. is- <br />continued, action should be taken to discontinue sEt•';ice. <br />e. Tests should be made by accepted leak detection met~,cds to <br />determine the presence of gas. <br />2. After initial action has been completed to assure the sa`ety <br />of customers and public and to prevent damage to property, <br />there are certain investigative actions that should be con- <br />sidered by the supervisor in charge of the investigation. <br />a. Record all information concerning actions taken, so that <br />necessary reports might be prepared. Refer to checklist <br />for supervisors - major fires and explosions, Exhibit (1). <br />b. Insure that all persons necessary to conduct a completed <br />investigation have been notified. <br />c. See that no•action is taken that might disturb evide^.ce <br />necessary to conduct a complete investigation. Evidence <br />should be recorded with notes and photographs, if possible, <br />and at times certain components should be brought to the <br />Service Center. <br />d. Visually inspect house pipin5, gas equipment, and ~:.=_er and <br />i <br />regulator installations. Should conditions ti•rarrant, con- <br />Sider pressure testing of piping systems. Verify w::h an <br />impartial witness the fact that gas is properly od^rized <br />if this is deemed advisable. <br />e. Review maintenace work and results of previous leaka;e <br />surveys in the area. Review the level of cathodic protection <br />r1 <br />U <br />-15- <br />