Job Safety Analysis Sheet ,Job Description: Cold cutting , Sequence Of Basic Job Steps: Pre - work, work, wind up Work & Housekeeping, Precautions: Plan the work involving personnel responsible for preparation (isolation, depressurization, draining, flushing, purging etc.) of the pipeline from which pig is to retrieved. Review Scope of Work & step by step procedure. Obtain the required work permit Conduct Tool Box Talk. Identify the valve to be closed referring P & ID. Ensure the valves are closed fully. Use Lock & Tag Depressurize the pig barrel to safe location. Drain the liquid content to trap / sump / safe location. Confirm the absence of pressure by opening a vent to safe location as well as observe pressure gauges reading. Flush the pig barrel with water for possible presence of Phosphoric deposit. Asses the risk & Override gas detectors in case required. Carry out gas test for safe working area. Confirm isolation valve integrity by slight opening the nearest vent / drain point. Confirm the absence of pressure at least from 2 independent sources (e.g. pressure gauges fixed at different location of pig barrel). Use non sparking tools in hazardous location. Keep Fire Extinguishers & fire hose in ready condition. Purge with nitrogen (if required) to remove toxic content. Use air line unit if required. Use safety goggles & Face Shield. Loosen the bolts / studs slowly. Do not stand in front of pig barrel door while opening it.Ensure the closure of pig barrel door after retrieving the pig. Ensure the closure of all vents & drain valves after closing the pig barrel door.Ensure the normalization of all valves including vent, drain, pressure gauges, gas detectors, liquid trap etc. Ensure proper housekeeping of the area.
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