API RP 14H-2007 pdf download

API RP 14H-2007 pdf download

API RP 14H-2007 pdf download.Recommended Practice for Installation, Maintenance and Repair of Surface Safety Valves and Underwater Safety Valves Offshore.
2 Definitions The following definitions are related specifically to surface safety valves and underwater safety valves and are presented to define the terminology used in this standard. 2.1 failure: Improper performance of a device or equipment item that prevents completion of its design function. 2.2 heat sensitive lock open device: A device installed on a SSV actuator to maintain the SSV valve in a full open posi- tion until exposed to sufficient heat to cause the device to release and allow the SSV valve to close. 2.3 manufacturer: The principal agent in the design, fabrication, and furnishing of a SSV/USV actuator and/or SSV/USV valve. The SSV/USV valve and SSV/USV actuator define functional entities and do not necessarily represent the units as supplied. 2.4 operating manual: The publication issued by the manufacturer containing detailed data and instructions related to the design, installation, operation, and maintenance of SSV/USV equipment. 2.5 operator: The user of a SSV/USV who chooses to comply with this standard. 2.6 qualified part: A part manufactured under an authorized quality assurance program and, in the case of replacement, pro- duced to meet or exceed the performance of the original part. 2.7 qualified person: An individual with characteristics or abilities gained through training or experience or both as mea- sured against established requirements such as standards or tests that enable the individual to perform a required function. 2.8 remanufacture: Activity involving disassembly, reassembly, and testing of the SSV/USV, with or without the replace- ment of parts, where machining, welding, heat treating or other manufacturing operations are employed. Note: Remanufacture does not include the replacement of bodies. 2.9 repair: Any activity that involves either replacement with qualified parts or disassembly/reassembly of the SSV/USV. Repair may be offsite or onsite as described below. 2.9.1 offsite repair: Activity performed at a location other than the equipment installation
2.13 tree, christmas: An assembly of valves and fittings used for production control that includes, as applicable, the tubing head top flange, the bottom most master valve, the crown valve (swabbing valve), the wellhead choke, and all valves and fittings in between. 2.14 valve, master: A valve located in the vertical run of a christmas tree whose primary purpose is to shut off well flow. 2.15 valve, wing: A valve located on the christmas tree, but not in the vertical run, which can be used to shut off well flow. 2.16 Underwater Safety Valve (USV): An automatic valve assembly (installed at an underwater wellhead location) that will close upon loss of power supply. When used in this standard, it includes the USV valve and USV actuator. 3 Receiving Inspection 3.1 Upon receipt of the SSV/USV at the wellsite, check the SSV/USV documentation to verify the following: a. The serial numbers on the SSV/USV correspond to those recorded on the accompanying receiving report. b. The SSV/USV valve and SSV/USV actuator are the proper size and pressure rating for the service intended. c. The SSV/USV valve is marked for the class of service (14D valves) or material class (6A, 10.20 valves) to which it may be subjected as outlined in API Spec 6A. 3.2 Check the SSV/USV for visible damage that might impair its proper operation. Note: Disassembly of the SSV/USV for inspection must not be attempted by other than qualified personnel and should be in accordance with the manufacturer’s, operating manual. 4 Installation and Maintenance 4.1 The SSV should be the second valve in the wellhead flowstream (e.g., if two master valves are used, the SSV should be the top master valve; if a single master valve is used, the SSV should be the wing valve). The USV should be in a practical location in the wellhead flowstream and within reasonable proximity of the well bore. 4.2 Installation and maintenance of SSVs/USVs should be performed by a qualified person(s).

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