1、BSI Standards PublicationBS EN 16125:2015LPG Equipment and Accessories Pipework systems andsupports LPG in liquid phaseand vapour pressure phaseBS EN 16125:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16125:2015.The UK participation in its preparation wa
2、s entrusted to TechnicalCommittee PVE/19, LPG containers and their associated fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for it
3、s correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81668 0ICS 23.040.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and St
4、rategy Committee on 31 December 2015.Amendments issued since publicationDate Text affectedBS EN 16125:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16125 December 2015 ICS 23.040.01 English Version LPG Equipment and Accessories - Pipework systems and supports - LPG in liquid phase and vap
5、our pressure phaseEquipements pour GPL et leurs accessoires - Systmes de canalisations et supports - Phase liquide et phase vapeur Flssiggas-Gerte und Ausrstungsteile - Rohrleitungssysteme und -befestigungen - Flssigphase und ungeregelte Gasphase von Flssiggas (LPG) This European Standard was approv
6、ed by CEN on 31 October 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
7、standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language a
8、nd notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hung
9、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENE
10、LEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16125:2015 EBS EN 16125:2015EN 16125:2015 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative
11、references 6 3 Terms and definitions . 9 4 Design safety considerations . 11 4.1 General . 11 4.2 Environmental considerations 11 4.3 Operating conditions 12 4.4 Protection against hazards . 12 4.4.1 Protection against mechanical damage . 12 4.4.2 Resistance to corrosive substances and atmospheres .
12、 12 4.4.3 Protection against condensation 12 5 Materials 14 5.1 Environmental. 14 5.2 General . 14 5.3 Accessories . 14 5.3.1 General . 14 5.3.2 Gaskets and ring joints . 14 5.3.3 Valves and fittings 14 5.4 Lubricants, sealants and adhesives . 15 6 Design . 15 6.1 General . 15 6.2 LPG pipework insta
13、llation technical documentation . 15 6.3 Measuring instruments 15 6.4 Over Pressure protection 15 6.5 Above-ground pipework 16 6.5.1 Clearance above ground 16 6.5.2 Pipework separation distances from above-ground electrical services 16 6.5.3 Ventilation of concealed piping 17 6.5.4 Pipe supports . 1
14、7 6.6 Underground pipes 18 6.6.1 General . 18 6.6.2 Underground pipe separation distances . 19 6.7 Pipework loading . 19 6.8 Equipotential bonding 19 7 Identification and corrosion protection of above-ground pipework 20 7.1 Corrosion protection. 20 7.2 Colour coding . 20 7.3 Reflectivity 20 8 Welded
15、 pipes and fittings 23 8.1 General . 23 8.2 Competency 24 8.3 Inspection of welds 24 8.4 Testing personnel 24 8.5 Acceptance criteria 25 8.6 Repairing welds 25 8.7 Brazed copper joints . 25 BS EN 16125:2015EN 16125:2015 (E) 3 9 Inspection and documentation 25 9.1 General . 25 9.2 Inspection and test
16、ing of corrosion protection . 26 9.2.1 Coatings on underground pipework 26 9.2.2 Above-ground pipework protection 26 9.2.3 Recording of test results 26 10 Testing 26 10.1 General . 26 10.2 Test media . 26 10.3 Strength testing . 27 10.3.1 General . 27 10.3.2 Test Procedure 27 10.3.3 Test pressure an
17、d duration 28 10.3.4 Acceptance criteria 28 10.3.5 Repairs and retest 28 10.4 Leak testing . 28 10.4.1 General . 28 10.4.2 Gauge Selection . 28 10.4.3 Test pressure and duration 28 10.4.4 Test media . 29 10.4.5 Acceptance criteria 29 10.4.6 Repairs and retest 29 11 Commissioning 29 12 Maintenance .
18、29 Annex A (informative) Pipe sizing liquid phase . 30 A.1 General . 30 A.2 Viscosity of LPG . 30 A.3 Calculation of liquid velocity flow in pipework . 30 A.4 Calculation of Reynolds number . 31 A.5 Liquid flow capacity and pressure drop in pipework . 31 A.6 Liquid flow capacity and pressure drop th
19、rough valves and fittings 32 Annex B (informative) Pipe sizing gas phase . 37 B.1 General . 37 B.2 Calculation of full vapour flow and pressure drop in pipes 37 B.3 Vapour flow capacity and pressure drop through valves and fittings 37 B.4 Gas velocity . 37 Annex C (informative) Pipework Integrity Ma
20、nagement Systems (PIMS) 38 C.1 Pipework Integrity Management 38 C.2 Basic PIMS for LPG plants 38 C.3 Assessment of condition 38 C.4 Response (remedial action/ future monitoring or inspection) . 38 C.5 Frequency of inspection and maintenance . 39 Annex D (informative) Environmental checklist 40 Annex
21、 E (informative) Manufacturing and type testing of composite pipes 41 E.1 General . 41 E.2 Materials 41 E.3 Physical properties 42 E.4 Manuals 42 E.5 Records . 43 Bibliography . 44 BS EN 16125:2015EN 16125:2015 (E) 4 European foreword This document (EN 16125:2015) has been prepared by Technical Comm
22、ittee CEN/TC 286 “LPG Equipment and Accessories”, the secretariat of which is held by NSAI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016, and conflicting national standards shall be w
23、ithdrawn at the latest by June 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations
24、, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
25、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16125:2015EN 16125:2015 (E) 5 Introduction This European Standard calls for the use of substances and procedures that may be injur
26、ious to health and/or the environment if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations at any stage. This European Standard is intended for users who take on the responsibility for the assembly of the pipework on site
27、. Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment is taken in a very broad sense, as in the total life cycle aspects of, e.g. a product on the environment, including expenditure of energy and during all phases from mining of raw materials
28、, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. NOTE 1 Annex D indicates which clauses in this standard addresses environmental issues. It is recommended that manufacturers develop an environmental management policy. For guidance see the ISO 14001 9. It has been
29、assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge unless otherwise stated. NOTE 2 This standard requires measurement of material properties, dimensions and pressures. All such
30、 measurements are subject to a degree of uncertainty due to tolerances in measuring equipment etc. It may be beneficial to refer to the leaflet “measurement uncertainty leaflet (SP INFO 2000 27 uncertainty.pdf)”. BS EN 16125:2015EN 16125:2015 (E) 6 1 Scope This European Standard specifies the requir
31、ements for the design, construction, testing, commissioning, operation and maintenance of LPG pipework in both the liquid phase and at full vapour pressure. This European Standard is applicable to LPG pipework having a maximum allowable pressure of less than or equal to 25 bar. This European Standar
32、d is applicable to new LPG pipework as well as to replacements of, or extensions to, existing LPG pipework. This European Standard is not applicable to: pipelines and their accessories; pipework for the propulsion systems of road vehicles or boats; and pipework on ships. 2 Normative references The f
33、ollowing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 549, Rubb
34、er materials for seals and diaphragms for gas appliances and gas equipment EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds EN 751-2, Sealing materials for metallic threaded joints in contact w
35、ith 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes EN 837 (all parts), Pressure gauges EN 1045, Brazing - Fluxe
36、s for brazing - Classification and technical delivery conditions EN 1057, Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated - P
37、art 1: Steel flanges EN 1254-1, Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes EN 1254-2, Copper and copper alloys - Plumbing fittings - Part 2: Fittings with compression ends for use with copper tubes EN 1254-5,
38、 Copper and copper alloys - Plumbing fittings - Part 5: Fittings with short ends for capillary brazing to copper tubes EN 1515-1, Flanges and their joints - Bolting - Part 1: Selection of bolting BS EN 16125:2015EN 16125:2015 (E) 7 EN 10216-1, Seamless steel tubes for pressure purposes - Technical d
39、elivery conditions - Part 1: Non-alloy steel tubes with specified room temperature properties EN 10216-2, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3, Seamless steel tub
40、es for pressure purposes - Technical delivery conditions - Part 3: Alloy fine grain steel tubes EN 10216-4, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10216-5, Seamless steel tubes
41、for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes EN 10217-1, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-2, Welded steel tubes for pressure purposes -
42、 Technical delivery conditions - Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 3: Alloy fine grain steel tubes EN 10217-4, Welded steel tubes for press
43、ure purposes - Technical delivery conditions - Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN 10217-6, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Submerged arc welded non-alloy steel tubes with specified low temperat
44、ure properties EN 10217-7, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes EN 10226-1, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and
45、 designation EN 10226-2, Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation EN 10253-2, Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection
46、 requirements EN 12007-1, Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 1: General functional requirements EN 12007-3, Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 3: Specific functional requirements
47、 for steel EN 12068, Cathodic protection - External organic coatings for the corrosion protection of burried or immersed steel pipelines used in conjunction with cathodic protection - Tapes and shrinkable materials EN 12266-1, Industrial valves - Testing of metallic valves - Part 1: Pressure tests,
48、test procedures and acceptance criteria - Mandatory requirements BS EN 16125:2015EN 16125:2015 (E) 8 EN 12266-2, Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements EN 12542, LPG equipment and accessories - Static welde
49、d steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13 m - Design and manufacture EN 12799, Brazing - Non-destructive examination of brazed joints EN 13175, LPG Equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) pressure vessel valves and fittings EN 14291, Foam producing solutions for leak detection on gas installations EN 14324, Brazing - Guidance on the application of brazed joints EN 15001-1, Gas Infrastructure - Gas installation pipework with
