![]() ![]() Closed preventer tests shall be performed at low and high pressure with the low pressure tests always preceding the high pressure test A pressure of 200 to 300 psi shall be applied and held below the closed ram or annular packing unit for a time period of not less than 10 minutes after stabilization A pressure at least equal to the rated working pressure of the preventer shall be applied and held below the closed ram or annular packing unit for a time period of not less than 10 minutes after stabilization. The timing of all closed preventer tests shall not start until the test pressure has stabilised. The hydraulic operating system pressure used shall be equal to or less than the manufacturer's specified operating pressure. The hydraulic operating chamber shall be tested at a minimum test pressure equal to 1.5 times the operating chambers rated working pressure.Ĭlosed Preventer Test © ModuSpec Engineering (INT) BVĮach ram and annular blow out preventer shall be subjected to a closed preventer test after the hydraulic proof test. b) the reduction of the pressure to zero c) The second pressure-holding period of not less than 15 minutes The timing of the test shall not start until the test pressure has been stabilized within the manufacturer's specified range and the external surfaces have been thoroughly dried. The hydrostatic proof test shall consist of three steps:Ī) the initial pressure-holding period of not less than 3 minutes. Table 18 - Hydrostatic Test Pressure (psi)ĪPI Spec 16A chapter 7.5.8.6.2.2. Hydrostatic proof testing shall be as shown in Table 18 of API Spec 16A ![]() ![]() Type RX and BX gaskets are not interchangeable. Only type BX gaskets are to be used with 6BX grooves. Only type RX gaskets are to be used with SR ring grooves. ![]() Type R and RX gaskets are interchangeable in type R ring grooves. Type R, RX and BX ring-joint gaskets are used in flanged, studded and hub connections. Prior to overlay the ring grooves shall conform to API Specification 6AĪPI Spec 16A chapter 4.3.4.2.3.2.1 API Spec 16A chapter 4.3.4.2.3.2.1 API Spec 16A chapter 4.3.4.2.3.2.1 API Spec 16A chapter 4.3.4.2.3.4Īll clamps shall have grooves in their bores with 25 (+/-0.25) degree angles to fit API 16B and 16BX hubs All 25 degree surfaces in clamp grooves shall have a surface finish of 32 RMS or less The clamp bore shall provide a minimum of 0.125 inch radial clearance around the hub neck in the made up condition on all hubs it is designed to fit Spherical face heavy nuts or spherical washers shall be used to minimize potential bending in bolts.ĪPI Spec 16A chapter 4.3.5.2.3.3 API Spec 16A chapter 4.3.5.2.3.4 API Spec 16A chapter 4.3.5.2.3.6 The temperature class of the welfare non metallic components shall be as follows:ĭimensions for the type 16B integral hubs shall be conform to table 5 of page 10 API Spec 16A Dimensions for the type 16B hubs blind hubs shall be conform Figure 3 page 9 API Spec 16AĪPI Spec 16A chapter 4.3.4.2.2.2.1 API Spec 16A chapter 4.3.4.2.2.2.1ĭimensions for the type 16BX integral hubs shall be conform to table 6.7 or 8 of API Spec 16A Dimensions for the type 16BX blind l hubs shall be conform to fig 3 of API Spec 16A Dimensions for all ring groves shall conform to Tables 6,7, or 8 of API Spec 16A Type BX hubs may be manufactured with corrosion resistant overlays in the ring grooves. The maximum temperature is the highest temperature of the fluid which may flow through the equipment Equipment shall be designed for metallic parts to operate with the temperature shown in Table 2ĪPI Spec 16A chapter 4.2.2 API Spec 16A chapter 4.2.2 API Spec 16A chapter 4.2.2.1 The minimum temperature is the lowest ambient temperature the equipment may be subjected. The drift mandrel gauge length shall be at least 2 inches longer than any cavity that intersects the bore, but no less than 12 inches. #Api 16a 4th edition pdf plus#Pass a drift mandrel through the bore of the assembly after all pressure testing The drift mandrel diameter shall be in accordance with the drift diameter in Table 1 with a tolerance of plus 0.010 inch and minus 0.000 inch The equipment size and rated working pressure: TABLE 1-API 16AĪPI Spec 16A chapter 7.5.8.4 API Spec 16A chapter 4.2.2 Ram Preventers Drift tests The drift test is required on Ram BOP, Annular BOP, Hydraulic connectors, drilling spools and adapters. Contents of substraction from API Specification 16A Specification for Drill Through Equipment 7.1 GENERAL No. ![]()
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