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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ISO – Standards Australia
The direction of closing shall be clockwise, unless otherwise specified. These limits shall be justified in design documents. Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
The purchaser shall specify which particular supplementary tests in Annex B shall be performed. Valves requiring input forces exceeding that specified in 7. For metal-seated valves, the leakage rate shall not exceed ISO Graphite should not be used for stem packing, seals or gaskets that can come into contact with sea water.
Explore the Home Gift Guide. The test pressure shall be 1,5 or more times the pressure rating determined in accordance with 7. Evidence of trapped pressurizing medium in the cavity shall be cause for isl. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. Check valves can also be of the wafer, axial-flow and lift type.
BS EN ISO 14723:2009
Bolting shall not be subjected to direct shear. It is incorporated by Royal Charter.
The izo medium shall be air or nitrogen. Each valve shall be provided with an austenitic stainless-steel nameplate securely affixed and so located that it is easily accessible. 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.
To test the bi-directional seat from the cavity, test pressure shall be applied simultaneously to the valve cavity and upstream end. Repair welds on pressure-containing parts shall be examined using the same NDE method that is used to detect the oso with a minimum of MT or PT.
The test pressure shall be applied successively to each valve end to test each seat separately from the upstream side. The minimum test pressure shall be 1,1 times the pressure rating determined in accordance with 7.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
Means shall be provided to prevent over-pressure in the actuator or gearbox from stem or bonnet seal leakage. In the case of external pressure, vacuum condition shall be assumed to apply inside the valve. This International Standard is not applicable to valves for pressure ratings exceeding PN Class Are you an Engineering professional?
Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. The test duration shall be a minimum of 2 h. Figure 5 — Typical three-piece ball valve www. Handwheel diameter s should not exceed the face-to-face or end-to-end length of the 1473 or 1 mm, whichever is smaller, unless otherwise agreed. NOTE Non-metallic parts can limit maximum pressures and minimum and maximum operating temperatures. 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.
The microstructure shall be free from inter-metallic phases and precipitates. We recommend that you check the website of the publishers of the international document before making a purchase.
NOTE Regulatory requirements can specify special design, manufacturing and certification of lifting points. Plug, ball and reverse-acting through-conduit gate valves shall be shipped in the fully open position, unless fitted with a fail-to-close sio. Where an alternative is offered, it is the responsibility of the manufacturer to identify any variations from this International Standard and provide details.
Revisions British Standards are updated by amendment or revision.