1、BS EN 12817:2010ICS 23.020.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDLPG Equipmentand accessories Inspection andrequalification ofLPG tanks up to andincluding 13 mThis British Standard was published under the authority of the Standards Policy and Strateg
2、y Committee on 31 January 2010 BSI 2010ISBN 978 0 580 60685 4Amendments/corrigenda issued since publicationDate CommentsBS EN 12817:2010National forewordThis British Standard is the UK implementation of EN 12817:2010. It supersedes BS EN 12817:2002 and BS EN 12818:2002 which arewithdrawn.The UK part
3、icipation in its preparation was entrusted to Technical Committee PVE/19, LPG containers and their associated fittings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a cont
4、ract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 12817:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12817 January 2010 ICS 23.020.30 Supersedes EN 12817:2002, EN 12818:2002English Version LPG Eq
5、uipment and accessories - Inspection and requalification of LPG tanks up to and including 13 m quipements et accessoires GPL - Inspection et requalification des rservoirs de capacit infrieure ou gale 13 m pour gaz de ptrole liqufis (GPL) Flssiggas-Gerte und -Ausrstungsteile - berprfung und erneute Q
6、ualifizierung von Behltern fr Flssiggas (LPG) mit einem Fassungsraum bis einschlielich 13 m This European Standard was approved by CEN on 4 December 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st
7、atus of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German).
8、 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. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Cz
9、ech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EU
10、ROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12817:2010: EBS EN 12817:2010EN 12817:2010 (E) 2 Contents Page Foreword
11、 5Introduction .61 Scope 72 Normative references 73 Terms and definitions .74 Safety 84.1 Safety precautions .84.2 Unsafe conditions 84.3 Leaks .85 Written scheme 96 Tank inspection and requalification 96.1 Routine inspection.96.2 Periodic inspection . 106.3 Requalification 106.3.1 Requalification f
12、or overground LPG tanks 106.3.2 Requalification for underground LPG tanks 106.3.3 Commissioning . 117 Inspection of tank and tank fittings 117.1 Tank 117.2 Tank fittings and immediate pipework . 117.3 Valve cover 127.4 Bonding . 127.5 Pressure relief valve . 127.6 Pressure gauge . 127.7 Contents gau
13、ges . 127.8 Shut-off valves 127.9 Studs, bolts, nuts, and washers 137.10 Corrosion protection system . 137.11 Piers and foundations for overground tanks . 138 Competence 138.1 Routine inspection 138.2 Periodic inspection . 138.3 Requalification 139 Records 139.1 Tank data . 139.2 Reports 14Annex A (
14、informative) Visual inspection 15A.1 Internal and external visual inspections 15A.2 Inspection techniques 15A.2.1 External visual inspection . 15A.2.2 Internal visual inspection . 15A.3 Records 15A.4 Additional inspection . 16Annex B (informative) Hydraulic pressure test . 17Annex C (normative) Acou
15、stic emission testing 18BS EN 12817:2010EN 12817:2010 (E) 3 C.1 Scope 18C.2 Testing procedure . 18C.3 Instrumentation . 18C.3.1 Sensors. 18C.3.2 Acquisition and evaluation system . 18C.4 Testing 18C.4.1 Test instruction 18C.4.2 Safety precautions 19C.4.3 Sensor location 19C.4.4 Pressurisation 20C.5
16、Data evaluation and analysis . 21C.5.1 Evaluation criteria . 21C.5.2 Real time control and stop criteria 21C.5.3 Post analysis 21C.5.4 Vessel grading . 22C.6 Data storage and reporting. 22Annex D (informative) Ultrasonic thickness test . 23D.1 General . 23D.2 Apparatus setting 23D.3 Control measurem
17、ent . 23D.4 Shell thickness measurements 23D.5 End thickness measurements 23D.6 Interpretation . 23D.7 Rejection criteria . 24Annex E (informative) Assessment of tanks by sampling 25E.1 General . 25E.2 Homogeneous batch . 25E.3 Selection of samples . 25E.4 Sample selection . 26E.5 Inspection period
18、. 26E.6 Presentation of results and decisions 26E.7 Pass criteria . 26E.8 Example calculation of a sample . 26Annex F (informative) External monitoring by camera for underground tanks . 28F.1 General . 28F.2 Inspection procedure 28F.3 Interpretation of results 28F.4 Records 28Annex G (informative) M
19、onitoring cathodic protection with sacrificial anodes for underground tanks . 29G.1 General . 29G.2 Records 29G.3 Procedure . 29G.4 Measurement of the galvanic current 29G.5 Measurement of the potential difference of the tank to the reference electrode 29G.6 Results 30Annex H (informative) Monitorin
20、g cathodic protection by impressed current for underground tanks . 31H.1 General . 31H.2 Apparatus . 31H.3 Conditions 31H.4 Isolation resistance of the coating 31H.4.1 Procedure . 31H.4.2 Calculation . 32H.5 Results 32H.6 Checking intervals . 32BS EN 12817:2010EN 12817:2010 (E) 4 Annex I (informativ
21、e) Corrosion monitoring by moisture and condensation detection for underground tanks . 33I.1 General . 33I.2 Equipment characteristics . 33I.3 Monitoring . 33I.4 Interpretation . 33Annex J (informative) Example of an inspection and requalification report 34Annex K (informative) A-deviations 35Biblio
22、graphy . 36BS EN 12817:2010EN 12817:2010 (E) 5 Foreword This document (EN 12817:2010) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. This European Standard shall be given the status of a national stan
23、dard, either by publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN
24、and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Users of this standard, prepared in the field of application of Article 118A of the EC Treaty, should be aware that standards have no formal legal relationship with Directives that may have been made under Ar
25、ticle 118A of the Treaty. In addition, national legislation in the Member states may contain more stringent requirements than the minimum requirements of a Directive based on Article 118A. Information on the relationship between the national legislation implementing Directives based on Article 118A
26、and this EN may be given in a national foreword of the national standard implementing this EN. This document supersedes EN 12817:2002 and EN 12818:2002. The main modifications concern the following: merging of two European Standards: EN 12817:2002 and EN 12818:2002; improvement of Annex C which beco
27、mes normative; a new clause: Clause 2, Normative references. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia
28、, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12817:2010EN 12817:2010 (E) 6 Introduction Periodic inspection and
29、requalification regimes for LPG tanks up to and including 13 m3have developed in various countries in different ways that range from defined to variable inspection periods with requalification regimes achieved by various methods. This European Standard for periodic inspection and requalification is
30、based on European countries legislation and codes of practice and industry codes of practice. In addition, use of LPG in different applications has encouraged the industry to approach the requirements for routine periodic inspection and requalification in different ways for each application. This Eu
31、ropean Standard calls for the use of substances and procedures that can be injurious to health if adequate precautions are not taken. It refers to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. It has been assumed in the draftin
32、g of this European Standard that execution of its provisions is entrusted to appropriately qualified and experienced people. BS EN 12817:2010EN 12817:2010 (E) 7 1 Scope This European Standard specifies requirements for: a) routine inspection, periodic inspection and requalification of fixed LPG stor
33、age tanks of sizes from 150 l up to and including 13 m3, and associated fittings; b) marking tanks and/or keeping records, as appropriate, as a result of routine inspection, periodic inspection and requalification. This European Standard excludes refrigerated storage. 2 Normative references The foll
34、owing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1330-9, Non-destructive testing Terminology Part 9: Te
35、rms used in acoustic emission testing EN 13477-1, Non-destructive testing Acoustic emission Equipment characterisation Part 1: Equipment description EN 13477-2, Non-destructive testing Acoustic emission Equipment characterisation Part 2: Verification of operating characteristic EN 13554, Non-destruc
36、tive testing Acoustic emission General principles EN 14584, Non-destructive testing Acoustic emission Examination of metallic pressure equipment during proof testing Planar location of AE sources 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.
37、1 periodic inspection external inspection of the visible parts of a tank and its fittings 3.2 routine inspection external inspection of the visible parts of a tank and its fittings, carried out more frequently than periodic inspections 3.3 requalification inspection/test carried out at intervals, ty
38、pically at the time of a periodic inspection, in order to confirm that a tank is fit for a further period of service 3.4 competent body person or corporate body, defined by a national competent authority, that, by appropriate qualification, training, experience, and resources, is able to make object
39、ive judgements related to inspection and testing of pressure equipment in LPG service BS EN 12817:2010EN 12817:2010 (E) 8 3.5 competent person person who, by qualification, training, experience, and resources, is able to make objective judgements related to inspection and testing of pressure equipme
40、nt in LPG service 3.6 national competent authority organization, recognized or appointed by a member state, that oversees safe operation of LPG pressure equipment 3.7 written scheme document, prepared by a competent body, containing inspection information 3.8 commissioning preparation for safe servi
41、ce 3.9 decommissioning removing from service and safe preparation for inspection/test 3.10 Liquefied Petroleum Gas LPG mixture of predominantly butane or propane with traces of other hydrocarbon gases classified in accordance with UN number 1965, hydrocarbon gases mixture, liquefied, NOS or UN numbe
42、r 1075, petroleum gases, Liquefied NOTE In some countries, UN numbers 1011 and 1978 may also be designated LPG. 4 Safety 4.1 Safety precautions Appropriate safety precautions shall be taken during decommissioning, commissioning and inspection/requalification of a tank and its fittings. 4.2 Unsafe co
43、nditions Any unsafe condition observed by a competent person on the site of an LPG storage tank shall be reported to the person responsible for safe operation of the tank/site, as appropriate, and action taken. 4.3 Leaks Any leak discovered from the tank or its fittings shall be reported immediately
44、 to the person responsible for safe operation of the tank. Action to make a tank or its fittings safe shall be taken by a competent person. NOTE Methods for detecting leaks include: visual inspection; smell; BS EN 12817:2010EN 12817:2010 (E) 9 listening; use of gas detectors. 5 Written scheme 5.1 Ea
45、ch tank and its fittings shall be included in a written scheme taking into account the requirements of Clauses 6 to 8. 5.2 If duties are shared between different parties, the written scheme shall clearly identify the respective areas of responsibility. 5.3 Intervals between inspections shall be dete
46、rmined by consideration of the following: the design specification of the tank and its equipment; the corrosion protection system on the tank; the system used to ensure that the LPG quality conforms to its specifications/standards, and that it does not contain components damaging to the material of
47、the tank or its fittings; the level of control over the filling and maintenance of the tank. NOTE The maximum period between requalifications should not normally be greater than 20 years, and if conditions are not satisfactory the period should be reduced. 5.4 The written scheme shall contain the fo
48、llowing information: the maximum interval between inspections; the parts to be inspected; the nature of the inspection; the critical parts that, if modified or repaired, shall be inspected by a competent person/body before they can be put back into service; the requirements for pressure relief valves (see 7.5.1); the name of the competent body preparing the written scheme; the date of the preparation of the written scheme. 6 Tank inspection and requalification 6.1 Routine inspection 6.1.1 Each tank and its fittings shall be routinely inspected at intervals defined in the written sc
