b'IAntprpoednudcitxio Dn Stop or control the gas release at the appliance, or service meter valve. If possible to do safely, ventilate the area. If the flammable atmosphere is above the upper explo-sive limit (UEL), keep in mind that during ventilation the atmosphere will pass back through the flammable range of 4 percent to 16 percent gas to air. Also remember that fans are a potential ignition source. mNatural gas, depending on the makeup, requires a minimum mixture of 4 percent to 16 per- cent in air to ignite (40,000 ppm. to 160,000 ppm).mNOTE: Odor can be detected as low as 1 ppm. However, if underground migration occurs,odorant may be stripped from the gas. NORMALLY, DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED. Extinguish surrounding fires, but not gas fed fire. Use protective hose streams to approach if necessary. DO NOT CLOSE main valves or any other large transmission or distribution vales. This can lead to serious problems elsewhere in the system. Closed valves should remain closed until opened by gas utility personnel. Do not squeeze off gas pipingstatic electricity may cause ignition.FIRST AID Move victim to fresh air. Call 911 or emergency medical service Assess the victim to determine if he/she is breathing normally. The level of treatment provided should be based on your level of individual training. Professional Rescuers provide artificial respirations if the victim is in respiratory distress. Non-Professional Rescuers begin CPR if the victim is not breathing normally. Administer oxygen if breathing is difficult Remove and isolate contaminated clothing and shoes. In case of burns, immediately cool affected skin for as long as possible with cold water.Do not remove clothing if adhering to skin. Keep victim warm and quiet. Ensure that medical personnel are aware of the material(s) involved and take precautions toprotect themselves.OTHER CONSIDERATIONS Decontaminate if necessary to remove the odorant. Debrief all responders and schedule a critique with all involved.37 2023 by Pipeline Association for Public Awareness'