ISO. First edition. Petroleum and natural gas industries —. Pipeline transportation systems — Subsea pipeline valves. Industries du pétrole . ISO (E). PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe’s licensing policy, this file may. Dear all, I am looking for this spec, ISO / API 6DSS Petroleum and natural gas industries — Pipeline transportation systems — Subsea pipeline valves.
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For undated references, the latest edition of the referenced is including any amendments applies. If specified, pipe-pup and transition-piece welds shall meet the requirements of the applicable pipeline design code.
Revisions British Standards are updated by amendment or revision. The results of all qualification tests shall be documented in a PQR.
Sub Sea Valves – ABV
A set of three impact specimens shall be taken from the HAZ at the location shown in Figure In the case of external pressure, vacuum condition shall be assumed to apply inside the valve. Alternatively, the resulting space shall be capable of withstanding the valve design pressure and external hydrostatic pressure, in which case it shall be hydrostatically tested in accordance with this International Standard and provided with a means of relieving built-up pressure prior to dismantling.
Figure 3 — Typical plug valve www. If the selected design code or standard specifies a test pressure less than 1,5 times the design pressure, then the design pressure for the body calculation shall be increased such that the hydrostatic test pressure in Pressure-temperature ratings for PN-rated valves shall be in accordance with the applicable rating table for the appropriate material group in EN For details of these and other benefits contact Membership Administration.
ISO – Standards Australia
Leakage from the upstream seat shall be monitored via the valve body-cavity iiso or drain connection, where provided. This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check and gate valves for subsea application in offshore pipeline systems meeting the requirements of ISO for the petroleum and natural gas industries.
Each valve shall be provided with an austenitic stainless-steel nameplate securely affixed and so located that it is easily accessible. Amazon Drive Cloud storage from Amazon. If the pressure rating of the pipe pups is insufficient for the hydrostatic-shell test pressure, then the pups shall be welded to the valve following the valve-shell test and the valve and pup s tested at a pressure specified by the purchaser.
Diferences Between API 6D SS and ISO – Marine/Ocean engineering other topics – Eng-Tips
Face-to-face and end-to-end dimensions for valve sizes not specified in Tables 2 to 6 shall be in accordance with ASME B A set of three weld-metal impact specimens shall be taken from the WM at the location shown in Figure If this requires the provision of temporary test ports, these shall be plugged and sealed as required by 7. Other iwo types shall be shipped with the gate in the fully closed position.
Learn more about Amazon Prime. The nominal size and face-to-face or end-to-end dimensions shall be stated on the nameplate. NOTE 3 Certain full-opening valves with pockets can allow a bypass of kso around a short pig or sphere. Valves requiring input forces exceeding that specified in 7.
Pressure testing, including pipe pups if applicable, shall be carried out before coating of the valves. The direction of closing shall be clockwise, unless otherwise specified. Repair of defects shall be performed in accordance with a documented procedure specifying requirements for defect removal, welding, heat treatment, NDE and reporting as applicable.
NOTE Purchaser or regulatory requirements can specify a longer record retention period. The marking on the nameplate shall be visually legible. Hardness limits for other bolting materials shall be by agreement. Locking devices for check valves shall be designed to lock the valve in the open position only.
The interface between actuators and valve bonnet or stem extension assemblies shall be designed to prevent misalignment or improper assembly of the components and preserve orientation of the obturator. Figure iiso — Typical axial flow check valve www. For duplex stainless steels, the procedure qualification shall include a microstructure examination in accordance with the ASTM E point-count method. Are you an Engineering professional? The output of the actuator shall isk exceed the stress limits of the valve drive train permitted by 7.
The microstructure shall be free from inter-metallic phases and precipitates.
It can be necessary to provide full weld test rings, in the same heat treatment condition as the finished valve, for weld procedure qualification. Endorsement notice The text of ISO Figure 9 — Typical single-plate wafer-type check valve, long pattern www. Commissioning and hydrostatic test conditions shall also be considered and may require corrosion protection. Care shall be taken to avoid galvanic couples.
No visible leakage is permitted during the test.
The frequency of testing shall also be specified by the purchaser, if not defined in this annex. The travel stops shall not affect the sealing capability of the valve. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The test procedures for various types of block valves are given in The valve shall then be closed and the valve-body vent valve opened to allow excess test fluid to overflow from the valve cavity test connection. All austenitic and duplex stainless steels shall be solution-treated and water-quenched.