API RP 14H-2007 pdf free download

API RP 14H-2007 pdf free download.Recommended Practice for Installation, Maintenance and Repair of Surface Safety Valves and Underwater Safety Valves Offshore.
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). 4.3 Installation procedures outlined in the operating manual should be followed. 4.4 All supply lines should be cleared of foreign matter prior to hookup. 4.5 The SSV actuator supply medium (gas or liquid) should be clean and noncorrosive. If pneumatic, it should be free from sol- ids, liquid hydrocarbons, and water or vapor. Hydraulic fluid should be free from gases and solids. Hydraulic fluid is normally used as the USV actuator supply medium. 4.6 End connection bolting and ring gaskets for SSVs should meet the requirements of API Spec 6A. Installation of bolting should be done in accordance with API Spec 6A. Where applicable, installation of USV bolting and ring gaskets should be in accordance with API Spec 6A. 4.8 After installation on the well, the SSV should be tested in accordance with 6.1. The USV should be tested in accordance with 6.2. 4.9 Periodic inspection and maintenance of SSVs/USVs are necessary. Each SSV/USV should be tested at specified regular intervals as dictated by field experience, operator’s policy and governmental regulations. The test should consist of an operating and pressure holding test as referenced in 6.1. For USVs, the test is described in 6.2. 4.10 Maintenance should be performed in accordance with the manufacturer’s operating manual. The SSV should be properly lubricated as recommended in the manufacturer’s operating manual, or more often if dictated by field experience. Lubricants and sealants used should be as prescribed in the manufacturer’s operating manual or an acceptable alternate. The interior of an uncoated or unprotected actuator should be greased as often as necessary to prevent rusting.
4.11 The following should be considered when determining the USV installation depth: a. Installation depth should be determined according to the manufacturer’s instructions. b. Pressure gradient of seawater/control line fluid. c. Calculated tubing pressure at USV during the open flow conditions. d. Operating friction as related to type of USV and sealing elements. e. Safety factor. 5 Repair 5.1 ONSITE REPAIR OF SSVS/USVS 5.1.1 Onsite repair should be accomplished by a qualified person(s). 5.1.2 Onsite repair does not include the replacement of the SSV/USV valve body. 5.1.3 Replacement parts should be qualified parts and should be documented on the SSV/USV Repair Record Sheet (Exhibit 2). Qualified parts shall meet or exceed design requirements for the original parts. 5.1.4 Testing should be performed in accordance with 6.3. 5.1.5 Documentation: completed copies of the SSV/USV Repair Record Sheet (Exhibit 2) and the SSV/USV Functional Test Data Sheet for Onsite Repairs (Exhibit 3). 5.2 OFFSITE REPAIR/REMANUFACTURE OF SSVS/USVS 5.2.1 Offsite repair/remanufacture is not addressed in this RP. These operations should be performed at a facility where the pro- cedures, specifications and quality control allow restoration of the equipment to its original performance meeting the require- ments of the edition of API Specs 6A or 14D in effect at the time of original manufacture, as a minimum. Exhibit 2 and Exhibit 4 may be used for documentation.