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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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.
Pressure shall then be applied whilst monitoring leakage through each seat at both ends of the valve.
Sub Sea Valves ABV
Isk Hydrogen embrittlement can occur in pipelines with cathodic protection. I don’t know if an ISO certifcate exists Some valve designs can require the balancing of the upstream and valve cavity pressure during the downstream seat test. It is identical to ISO It is the constant aim of BSI to improve the quality of our products and services.
Revisions British Standards are updated by amendment or revision. The purchaser should as a minimum provide the partial pressure of H2S, percent chlorides, pH and temperature.
The valve shall be operated for each appropriate condition defined in Be the first to review this item Would you like to tell us about a lower price?
Users of British Standards should make sure that they possess the latest amendments or editions. Download Now White Paper: The drive train shall be designed such that the weakest component is outside the pressure boundary. This International Standard is not applicable to valves for pressure ratings exceeding PN Class 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.
Any special requirements for end-to-end or face-to-face dimension?
All austenitic and duplex stainless steels shall be solution-treated and water-quenched. The test duration shall be in accordance with Table The Eng-Tips staff will check this out and take appropriate action. The hardness of ferrous and non-ferrous materials that 147233 subject to cathodic protection shall not exceed 34 HRC HBW.
The test pressure shall be 1,5 or more times the 1423 rating determined in accordance with 7. NOTE ISO specifies construction, functional and accidental loads and provides examples of such loads for consideration by the purchaser. Charpy impact values for other materials shall be by agreement. If provided, all sealant injection ports shall have a double barrier.
Diferences Between API 6D SS and ISO – Marine/Ocean engineering other topics – Eng-Tips
For valves without a body cavity or drain connection, seat leakage shall be monitored from the respective downstream end of the valve. For details of these and other benefits contact Membership Administration. Figure 14 — Bolt hole misalignment www.
Duplex stainless steel used for pressure-containing and pressure-controlling parts shall include a microstructure examination in accordance with the Iwo E point-count method. The specimens shall be oriented with the notch perpendicular to the surface of the material.
A indicates information established by agreement. Care shall be taken to avoid galvanic couples.
A minimum of one impact test, comprised of a set of three specimens, shall be performed on a representative test bar of each heat of the material in the final heat-treated condition. Corrosion tests to demonstrate corrosion resistance of the heat and heat-treatment batch combination of high alloy steels used for the manufacturing of the valve should be specified by the purchaser.
Except for reduced-opening valves, valve sizes shall be specified by the nominal sizes DN or nominal pipe size NPS. International Classification for Standards ICS is an international classification system for technical standards. This publication does not purport to include all the necessary provisions of a contract.
The work of preparing International Standards is normally carried out through ISO technical committees.
It is important to us that you purchase the right document. If intermediate design pressures and temperatures are ios by the purchaser, the pressure-temperature rating shall be determined by linear interpolation. Valves covered by this International Standard shall be furnished in one of the following classes: Reduced-opening valves with a circular opening shall be specified by the nominal size of the end connections and the nominal size of the reduced opening in accordance with 6.
The purchaser shall specify the NDE level at the time of the order placement, considering the following factors: Stems shall also be designed for loads due to internal and external pressures. The use of test fixtures is also allowed, by agreement, when circumstances dictate.
If hyperbaric testing is specified by the purchaser to demonstrate suitability, hyperbaric testing shall be performed in accordance with Clause B. NOTE Loose wrenches are not considered part of the valve isi are not required to meet the maximum length requirements.
The duration shall not be less than that specified in Table 9. The agreed test method should simulate the operational requirements of the valve and should include both static and functional tests as appropriate. For ball and plug valves, the total torsional deflection of the extended drive train when delivering the design torque shall not exceed the overlap contact angle between the seat and obturator.
BS EN ISO 14723:2009
The allowable stress values shall be consistent with the selected design code or standard. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. The notch shall be placed perpendicular to the material surface at a ios resulting in a maximum amount of HAZ material located in the resulting fracture. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
Would you like to tell us about a lower price? Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Figure 4 — Typical top-entry ball valve www.