SK3 Pigging Operation

What is the purpose of pipeline pigging operation?

• To increase the risk of corrosion induced by debris

• To protect downstream plant facilities from fouling

• To reduce the transport efficiency of the product

• To maintain the quality of the product

What is the primary purpose of a pig launcher and receiver?

• To create an explosive mixture inside the launcher/receiver

• To increase the risk of oil spills

• To launch and receive pigs into/from a pipeline system without interrupting the flow

• To retrieve pigs manually

What are the types of pigs used in pipeline pigging operation?

• Foam Pigs, Scrapper Pigs, and Plugs

• Utility Pigs, Intelligent Pigs, and Gel Pigs

• Utility Pigs, In Line Inspection Tools, and De-Scaler Pigs

• Foam Pigs, Scrapper Pigs, and Bi-directional Pigs

What is the purpose of using a Foam Pig?

• To gather information on the condition of the line

• To isolate a section of the pipeline

• To remove rust from the inner surface of the pipe wall

• To optimize pipeline dewatering, cleaning, and drying tasks

What are the precautions to be taken when handling a pig receiver/launcher?

• Never stand in front of a launcher or receiver door unless it is for the purpose of putting a pig into the launcher or retrieving a pig from the receiver

• Always enter a launcher or receiver in an attempt to retrieve pig

• Open the launcher door without checking the pressure inside

• Avoid wearing standard personal protection equipment (PPE)

What are the risks associated with pigging operation?

• Physical exertion required to operate manual process valves

• Exposure to low pressure of hydrocarbon gas, oil or condensate

• Risk of creating an explosive mixture inside the launcher/receiver

• Risk of igniting released hydrocarbon gas, oil or condensate

What is the purpose of interpreting pigging data?

• To protect downstream plant facilities from fouling

• To launch and receive pigs into/from a pipeline system without interrupting the flow

• To determine wear and/or other required information from the received pig

• To increase the risk of corrosion induced by debris

What are the types of Cleaning Pigs?

• Utility Pig, Intelligent Pig, Gel Pig, and Plug

• Foam Pig, Scrapper Pig, Bi-directional Pig, and De-scaler Pig

• Foam Pig, Scrapper Pig, Bi-directional Pig, and Plug

• Utility Pig, In Line Inspection Tool, Gel Pig, and Plug

What is the purpose of Pig Selection?

• To randomly choose a pig for the operation

• To select the type of pig based on several criteria like purpose, line contents, and pipeline characteristics

• To decide the type of pig based on the weather conditions

• To determine the color of the pig to be used

What is the process of launching a pig into the pipeline system?

• Inform the receiving platform to line up the receiver, check the condition of the scraper pig, and replace the cups if required

• Check that valves B, C, D, E are closed, check that the pressure in the launcher is zero, open the local vent valve

• Load the pig into the scraper barrel and launch, calculate pig travel speed during the pig's progress

• Open valve A, close valve C and valve B respectively, depressurize the launcher by opening the vent valve E