Pigging Pipeline Procedures: Understanding the Process. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 11 months ago
This is the eighth NEB reported pipeline pigging related injury incident since 1990. Comment goes here. Since company policies vary regarding whether the pig receiver is left on stream or isolated from the pipeline, the operator should verify whether there is any internal pressure in the receiving trap before starting any part of the receiving procedures. For the most effective results, it is essential to select the appropriate pipeline pig for the job. How can I improve my memory before an exam? Presentation • Incidents = Natural Gas Pipelines • Accidents = Petroleum Pipelines • Follow your procedure when gathering information. developing operating procedures only in conjunction with company specified safety protocols. 4. Pigging a pipeline usually means inspection and cleaning of the pipeline.Pig launchers and receivers are also essential for pigging operations. • NRC will assign an incident report number • Update the initial report if needed. 3 Monitor the air for benzene and H 2 S after venting. Control procedures 3 Fully depressurise and vent the receiver before opening the door. Clipping is a handy way to collect important slides you want to go back to later. Physical exertion required to operate manual process valves or handling pig. Complete the following to prepare for receiving a pig:Check that the electro-magnetic pig signals ZI1 and ZI2 are installed and working correctly with serviceable batteries.Prior to launching a pig from launcher, complete the following valve line-up procedures at pig receiving end of the pipeline to divert the production through pig receiver barrel via its “kicker line”:Complete the following steps to load and launch a pig from pig launcher. PART 1 BASIC SAFETY GUIDELINES 7 .
• Isolate the vessel from the process pipeline. Pipeline Pigging Launcher and Receiver Station Operation Safe operation of the pipeline pigging closure door requires that the operator follows certain safety procedures before opening the closure: • Drain and depressurize the vessel.
3 Allow five minutes for gases and mists to clear after opening: keep clear. It can be easily vented to atmosphere.Liquids are also commonly used where the main product is viscous.
Risk of igniting released hydrocarbon gas or condensate All safety-related incidents and near misses are learning opportunities and must be reported. of wax material from the wall of the pipeline.
For example, assume a pig is run in a 24 in.
If you continue browsing the site, you agree to the use of cookies on this website. pipeline valves were in the proper position and began pumping from the nitrogen truck to purge the line. Your message goes here Pipeline Pig Types .
Prevention, awareness, personnel training and appropriate pig trap design are key. The presence of vaporized water within the lumen of pipelines constitutes a potential impurity for fluids that are transported through them.A vital aspect of natural gas pipeline commissioning procedures is the purging of flow lines. The pig may be used to scrape off deposits (wax, parafins) from the inside of the pipeline, or to push liquids through a multi-phase pipeline. 1. A pigging vessel is not an isolated system but is directly linked to the line which is to be pigged.
pipeline, 100 miles long, and removes 0.016 in.