BS EN 14141:2013
$189.07
Valves for natural gas transportation in pipelines. Performance requirements and tests
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 46 |
This European Standard applies to all valves (plug, ball, gate and check valves) used in onshore transmission pipelines for transport of natural gas in accordance with EN 1594, but with a differing temperature range according to the following three classes in accordance with EN 682:
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– 10 °C to 60 °C;
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– 20 °C to 60 °C;
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the range stated by the purchaser for special design.
This European Standard comprises all valves which are components of the pipeline.
This European Standard specifies valves for pipelines with a maximum operating pressure (MOP) over 16 bar.
Control valves and safety valves are excluded from the scope of this European Standard.
This European Standard specifies requirements and appropriate verification tests carried out during production and for certification purposes to verify that the valves conform to the requirements. A summary of the product and type tests is given in Annex G.
This European Standard makes reference to EN 13942. All the requirements of EN 13942 should be met unless otherwise stated. Paragraphs marked with a dot [•] indicate requirements which are identical to EN 13942.
Additional national requirements and tests in accordance with individual national legal regulations not yet harmonised may be necessary and are to be advised in the purchase order.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | Foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 10 | 4 Functional requirements 4.1 Travel stops 4.2 Position of the obturator 4.3 Protection of exposed stems and shafts 4.4 Piggability 4.5 Lifting lugs |
| 11 | 4.6 Additional requirements 5 Requirements and tests 5.1 Design 5.1.1 Shell 5.1.2 End-to-end dimensions 5.1.3 Butt welding ends |
| 12 | 5.1.4 Anti-blow-out feature 5.1.5 Sealant injection systems 5.1.6 Extended drain, vent and sealant lines |
| 14 | 5.1.7 Vent, drain and sealant valves 5.1.8 Mechanical resistance against excessive actuating forces 5.1.9 Body/bonnet connection 5.1.10 Interface of valves to actuators of gears |
| 15 | 5.1.11 Stem extensions |
| 16 | 5.2 Operation 5.2.1 Handwheels and wrenches – Levers 5.2.2 Protection against rapidly moving external components |
| 17 | 5.2.3 Manual override devices 5.2.4 Torque/thrust testing 5.3 Materials 5.3.1 Material compatibility |
| 18 | 5.3.2 Shell materials 5.3.2.1 General 5.3.2.2 Impact values |
| 19 | 5.3.2.3 Welding ends for on-site welding 5.3.3 Obturator |
| 20 | 5.3.4 Body/bonnet connection, bolting materials 5.3.5 Seals 5.4 Repair |
| 21 | 5.5 Non-destructive testing 5.5.1 Qualification of testing personnel 5.5.2 Welding |
| 22 | 5.5.3 Castings 5.5.4 Forgings 5.5.5 Welding ends for on-site welding |
| 23 | 5.6 Shell test 5.7 External tightness 5.7.1 Stem/shaft sealing 5.7.2 External pressure relief |
| 24 | 5.7.3 Fire test (optional if requested) 5.8 Internal tightness 5.8.1 Seat tightness 5.8.2 Functional test on clean service (mandatory in some countries) |
| 25 | 5.8.3 Abrasion resistance test on dirty service (mandatory in some countries) 6 Inspection 7 Quality 8 Type tests 9 Functional and other qualification tests |
| 26 | Table 1 — Modifications on tested valve range 10 Marking |
| 27 | Annex A (normative) Type test on general design and production of pipeline valves A.1 General A.2 Purpose A.3 Type test qualification limits A.3.1 Size range Table A.1 — Nominal size ranges A.3.2 Design A.3.3 Material |
| 28 | A.3.3.1 Shell (body, bonnet) A.3.3.2 Obturator/stem materials A.3.3.3 Sealing materials A.3.4 Type of manufacture A.4 Type test A.4.1 Prerequisites for manufacturing A.4.2 Stress evaluation and safety design check A.4.3 Test on valves |
| 29 | A.4.4 Documentation A.5 Check of the production and testing by the independent accepted body A.6 Modification of valves with type mark A.6.1 Revisions of this European Standard A.6.2 Notification of modifications A.7 Procedure A.7.1 Application for type test |
| 30 | A.7.2 Test report A.7.3 Type mark A.8 Notification of valves with type mark A.8.1 Approvals A.8.2 Expiry A.8.3 Specimen of declaration of obligation |
| 32 | Annex B (normative) Strength test on torque/thrust B.1 Purpose B.2 Performance of test B.3 Acceptance criteria |
| 33 | Annex C (normative) Functional test on clean gas (on option) C.1 Purpose C.2 Performance of test C.3 Acceptance criteria |
| 34 | Annex D (normative) Functional test for abrasion resistance to dirty service of ball valves (on option) D.1 Purpose D.2 Performance of test D.3 Acceptance criteria |
| 35 | Table D.1 —Composition of the contaminant mixture |
| 36 | Annex E (normative) Wall thickness measurement E.1 Purpose E.2 Description of test E.3 Test method E.4 Acceptance criteria |
| 37 | Annex F (informative) Additional requirements F.1 Bending strength F.2 Protection against excessive torques |
| 38 | Annex G (informative) Summary of tests on product and type tests |
| 39 | Table G.1 — Summary of the mandatory or optional tests to be carried out in accordance with this European Standard |
| 43 | Bibliography |
