ISO 14723 PDF


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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The hardness of ferrous and non-ferrous materials that are subject to cathodic protection shall not exceed 34 HRC HBW.

Figure 10 — Typical dual-plate wafer-type check valve, long pattern www. It has been developed to address special requirements specific to subsea pipeline valves.

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The is method shall ensure flange alignment in accordance with 41723. NOTE Hydrogen embrittlement can occur in pipelines with cathodic protection. The duration shall not be less than that specified in Table 9. Figure 11 — Typical single-plate wafer-type check valve, short pattern 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 Tests specified with the valve half-open may also be performed with the valve fully open, provided the body cavity is simultaneously filled and pressurized through a cavity connection.

Diferences Between API 6D SS and ISO – Marine/Ocean engineering other topics – Eng-Tips

The maximum operating pressure at the minimum and maximum operating temperatures shall be marked on the nameplate. Cavity-relief testing is not required if protection of the cavity against over-pressure is ensured, for both the open and the closed position, by a hole in the obturator or around the seat seal.


There is no restriction on the upper limit of valve bore sizes. Endorsement notice The text of ISO The interface between actuators or gearboxes and valve bonnet or stem extension assemblies shall be sealed, for example with gaskets or O-rings, to prevent external contaminants from entering the assembly. For undated references, the latest edition of the referenced document including any amendments applies.

Design and calculations for pressure-containing elements shall be in accordance with an internationally recognized design code or standard with consideration for pipe loads, operating forces, etc.

If specified by the purchaser, valves shall be provided with a pressure cap.

Sub Sea Valves – ABV

Figure 7 — Typical reduced-opening swing check valve www. The manufacturer shall identify which of the following operating modes requires the greatest thrust or torque: The minimum design thrust or torque shall be based on the operating mode that requires the greatest value of the thrust or torque.

Pressure shall then be applied whilst monitoring leakage through each seat at both ends of the valve. Handwheel diameter s should not exceed the face-to-face or end-to-end length of the valve or 1 mm, whichever is smaller, unless otherwise agreed. It presents the UK view on standards in Europe and at the international level.

If hyperbaric testing is specified by the purchaser to demonstrate suitability, hyperbaric testing shall be performed in accordance with Clause B. Withoutabox Submit to Film Festivals. Red Flag This Post Please let us know here why this post is inappropriate.

Annex A of this International Standard provides guidelines to assist the purchaser with valve type selection and specification of requirements when ordering valves.


NOTE Non-metallic parts can limit maximum pressures and minimum and maximum operating temperatures. The protector or cap shall have provisions for venting prior to removal and during fitting.

The design of the covers shall prevent the valves from being installed unless the covers have been removed. The chemical composition of other carbon steel parts shall be in accordance with the applicable material standards. All NDE of fabrication welds shall be carried out in the final heat-treated condition and shall be performed in accordance with written procedures.

ISO – Standards Australia

A set of three weld-metal impact specimens shall be taken from the WM at the location shown in Figure If specified, pipe-pup and transition-piece welds shall meet the requirements of the applicable pipeline design code.

The test pressure and duration shall be as specified in The purchaser shall specify which particular supplementary tests in Annex B shall be performed. NOTE Purchaser or regulatory requirements can specify a longer record retention period.

Get to Know Us. Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. The output of the actuator shall not exceed the stress limits of the valve drive train permitted by 7. See and discover other items: International organizations, governmental and non-governmental, oso liaison with ISO, also take part in the work. The chemical composition of other materials shall be established by agreement.

The choice of standard shall be by agreement.