Gate valve bonnet failures from thermal expansion of fluids at high temperature - In a steam-assisted gravity drainage application, immediately after start-up, a gate valve bonnet failure caused a release of pressure to atmosphere. In thermal applications throughout the oil and gas industry, there have been incidents of valve failures during start-up. Resulting damage can include stretching studs and loss of pressure integrity between the body and bonnet. The main cause is pressure build-up in the gate valve cavity from thermal expansion of fluids, which was completely full and isolated. Such pressure exceeded the rated working pressure of the valve.
Canadian province eyes better prevention following 2016 Husky oil spill
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Former resistance leaders urge Abuja administration to pay up or face oil industry disruption
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Two Scotland-based bodies put up funding for companies to come up with industry-aiding innovations
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