![]() The intent is that the pipe ID be as close as practical to the ID of the valves.īackground: When a piece of equipment is built to an API equipment specification it complies with the specification at the time it was built. Referring to Section 6.2.3.2.2, can you please clarify further the meaning of the size range shown and your interpretation of nominal diameter? For the specific well mentioned in this question, the equipment can only be tested to 5000 psi (see 6.5.3.2.6). Reply 1: API 53 does not address de-rating. Question 2: Is only one remote operated choke is required? Question 1: Referencing 6.2.2.8 and 6.2.2.9, is it correct that the equipment is technically de rated to 5000 psi for the wellhead? The choke manifold has one remote operated drilling choke. ![]() The equipment is being used on a 5000 psi well head. ![]() Referring to Section 6.1.2.12, can a surface BOP stack arrangement with one annular, one blind shear ram, and two pipe rams, with the fifth device being optional, be considered a Class 5 stack arrangement?īackground: A drilling contractor has a well control system with BOPs, choke and kill manifolds rated at 10,000 psi. The stack must contain one annular, one blind shear ram, two pipe rams, and the fifth device can be an annular or pipe ram. Reply No a Class 5 surface BOP stack arrangement must contain five devices at a minimum. ![]() API Std 53 - Blowout Prevention Equipment Systems for Drilling Wells Last update: August 12, 2015 ![]()
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