Abstract
This paper describes the new API guidelines being proposed to establish design methodology, material functional specifications, design validation requirements for equipment designed to operating above 15 000 psi (103.5 MPa) rated working pressure and/or 350°F (177°C) operating temperature through API 17 Technical Report TR8: High Pressure - High Temperature (HPHT) Design Guidelines. The proposed design guideline is intended to provide the wording and the reference information which can be incorporated into any of the subsea hardware specifications, standards and recommended practices within the suite of subsea API (SC 17) documents. Its intent is to be a reference cited in part or in total, by the various API subsea hardware documents, allowing them to expand their working pressure and temperature classifications without having to re-write the relevant sections into their governing documents. API 17TR8 contains detailed guidelines on new design methodology, material property requirements, design validation testing, and special requirements for seals and fasteners when considering the effects of HPHT wellbore fluids passing through subsea equipment.
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