DIN EN 1919-2000 Transportable gas cylinders - Cylinders for liquefied gases (excluding acetylene and LPG) - Inspection at time of filling German version EN 1919 2000《可移动气瓶 液化气(不包括.pdf

1、DEUTSCHE NORM October 2000 Transportable gas cylinders Inspection at time of filling English version of DIN EN 191 9 : 2000 Cylinders for liquefied gases (excluding acetylene and LPG) DIN EN 1919 - ICs 23.020.30 Ortsbewegliche Gasflaschen - Gasflaschen fr verflssigte Gase (ausgenommen Acetylen und F

2、lssiggas LPG) - Prfung zum Zeitpunkt des Fllens European Standard EN 1919 : 2000 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 23 Transportable gas cylinders. The responsible German body involved in its preparatio

3、n was the Normenausschuss Druckgasanlagen (Pressure Vessels Standards Committee). EN comprises 12 pages. No pari of this standard may be reproduced without the prior permission of hiDeutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale f

4、or German Standards (DIN-Normen). Ref. No. DIN EN 1919 : 2000-1 English price group 08 Sales No. 1108 03.01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1919 July 2000 ICs 23.020.30 English version Transportable gas cylinders Cylinders for liquefied gases (excluding acetylene and LPG) Inspec

5、tion at time of filling Bouteilles gaz transportables - Bouteilles gaz liqufis ( lexception de lactylne et du G.P.L.) - Contrle au moment du remplissage des Fllens Ortsbewegliche Gasflaschen - Gasflaschen fr verflssigte Gase (ausgenommen Acetylen und Flssig- gas LPG) - Prfung zum Zeitpunkt This Euro

6、pean Standard was approved by CEN on 2000-07-02. CEN members are bound to comply with the CENKENELEC 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 concern

7、ing such national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist 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 l

8、anguage and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spai

9、n, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 2000. CEN - All rights of exploitation in any form and by any means reserved worldwide f

10、or CEN national members. Ref. No. EN 1919: 2000 E Page 2 EN 1919 : 2000 Contents Page Foreword . 2 Introduction 3 1 Scope . 4 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Terms and definitions . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Filling inspection . 5 5 Description of inspection items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Annex A (informative) Example of a procedure to establis

12、h a correct tare weight . . . . . 9 Annex B (informative) Procedure to be adopted when a cylinder valve is suspected tobe obstructed . 10 Foreword This European Standard has been prepared by Technical Committee CEN/TC 23 “Transportable gas cylinders“, the secretariat of which is held by BSI. This Eu

13、ropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2001 and conflicting national standards shall be withdrawn at the latest by January 2001. According to the CENKENELEC Internal Regulations, the nat

14、ional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

15、Page 3 EN 1919: 2000 Introduction This Standard covers requirements which reflect current practice and experience. Each transportable gas cylinder is inspected at time of filling in order to establish that: - it has no defects such that the cylinder is unsafe for filling or continued use; - it can b

16、e identified and complies with the relevant requirements with regard to marking, labelling, colour coding and completeness of its accessories; - its valve functions satisfactorily. The cylinder filling inspection shall be carried out only by persons who are trained and competent in the subject, for

17、the purpose of ensuring that a cylinder is safe for continued use. Annexes A and B are for information only and are not a mandatory part of this standard. Page 4 EN 1919 : 2000 1 Scope This standard: - specifies the inspection requirements at the time of filling and applies to seamless or welded tra

18、nsportable gas cylinders made of steel or aluminium alloy for liquefied gases (excluding acetylene and LPG) of water capacity from 0,5 litre up to 150 litres. It also applies, as far as practicable, to cylinders of less than 0,5 litre water capacity; - does not apply to manifolded bundles or manifol

19、ded trailer cylinders. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent

20、amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). prEN 1802: 1998 prEN 1803:1998 prEN 1968:1998 ENISO

21、11114-1 prEN IS0 1 1 1 14-2: 1999 Transportable gas cylinders - Periodic inspection and testing of seamless aluminium alloy gas cylinders Transportable gas cylinders - Periodic inspection and testing of welded carbon steel gas cylinders (excluding LPG) Transportable gas cylinders - Periodic inspecti

22、on and testing of seamless steel gas cylinders Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials (IS0 1 1 114- 1 : 1997) Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 2 : N

23、on-metallic materiais (ISOmIS 11 114-2: 1999) Page 5 EN 191 9 : 2000 3 Terms and definitions For the purpose of this standard the following terms and definitions apply: 3.1 filling ratio ratio of the mass of gas introduced in a cylinder to the mass of water at 15C that would fill the same cylinder f

24、itted ready for use. 3.2 maximum permissible filling weight product of the water capacity of the cylinder and the filling ratio of the gas. 3.3 pressure relief device device which is fitted to the cylinder or its valve and designed to open to prevent a rise of pressure in excess of a specified value

25、 because of excess temperature andor pressure. 3.4 empty weight mass of the cylinder including all integral parts (e.g. neck ring, foot ring) but excluding the mass of valve, valve cap or valve guard and any coating. 3.5 tare weight sum of the empty weight, the mass of the valve including dip tube w

26、here fitted, any fixed valve guard and the mass of all other parts which are permanently attached (e.g. by clamping or bolted fixing) to the cylinder when presented for filling. 3.6 total weight tare weight of the cylinder plus the maximum permissible filling weight. 3.7 filler person or persons res

27、ponsible for inspection prior to, during and immediately after filling and who has received an appropriate level of training for the work involved, and has access to all necessary data for the cylinder, valve and all other fittings used. 4 Filling inspection Each cylinder shall be submitted to an in

28、spection prior to, during and immediately after filling. The following items shall be covered by a filling inspection: - verification of serviceable condition (see 5.1); Page 6 EN 1919 : 2000 - identification of cylinder for suitability for filling (see 5.2); - identification of cylinder owner, if r

29、equired (see 5.3); - verification of tare weight and calculation of weight of gas to be charged (see 5.4); - verification of integrity of neck ringthreaded boss (see 5.5); - verification of valve integrity and suitability (see 5.6); - check for correct filling (see 5.7). 5 Description of inspection

30、items 5.1 Verification of serviceable condition It shall be established that each cylinder is in a serviceable condition. Cylinders which have been found to be non-serviceable shall be clearly identified according to written procedures in the filling company. Before a cylinder is fiiled it shall be

31、established that the cylinder is clean and free of foreign material (i.e. such that the cylinder can be assessed for mechanical damage that would prevent it from being filled safely) and does not exhibit any abnormalities such as arc burns, bulging, severe corrosion, headfire damage or significant m

32、echanical damage. In case of doubt, rejection criteria described in prEN 1968: 1998, prEN 1802: 1998 or prEN 1803: 1998, as appropriate, shall be applied. NOTE: It is particularly important that the base of each welded cylinder is inspected for corrosion or rusting. Cylinders exhibiting such evidenc

33、e should not be filled until properly evacuated, cleaned and painted. 5.2 Identification of cylinder for suitability for filling Before filling a cylinder, it shall be established that: - the cylinder has not passed its due date for retest; - the cylinder is compatible with the intended gas content

34、and filling weight; - the cylinder is permitted for filling in the country of the filling station; - the proposed contents correspond with any identification label and shoulder colour on the cylinder. If there is any disagreement between the proposed content and such Page 7 EN 191 9 : 2000 identific

35、ation, the cylinder shall not be filled. 5.3 Identification of cylinder owner If required, before filling, the identity of the cylinders owner shall be established and his authorization to fill the cylinder obtained. 5.4 Verification of tare weight and calculation of weight of gas to be charged The

36、validity of the tare weight is not required to be checked if special valves are used which prevent ingress of contamination, e.g. non-returdpositive pressure valves, or if it can be guaranteed by appropriate checks at time of filling that no liquid or other detrimental contamination exists in the cy

37、linder. If the above conditions cannot be met, then the validity of the tare weight shall be verified at the start of the filling process when the cylinder is placed on the filling scale. The tare weight stamped on the cylinder shall be verified by the actual scale weight readings within the toleran

38、ces given in table 1. If the tare weight is not stamped on the cylinder, or there are doubts about the validity of the tare weight, it shall not be filled until the correct tare weight is determined and stamped onto the cylinder. Examples of such doubts are illegible stampmarkings, suspected change

39、(or absence) of guard, suspected change of valve. See annex A for an example of a tare weight procedure. However, when a tare weight has to be altered, a diagonal line shall be stamped through the obsolete tare weight, if present, so that it is still legible for future reference. If more than one ob

40、solete tare weight exists only the original tare weight (with diagonal line) shall be retained together with the new tare weight. The other obsolete tare weight(s) shall be removed taking care not to affect the integrity of thc cylinder. Only a clean, empty cylinder with one paint coat and valve sha

41、ll be weighed, with accuracy as shown in table 1. The cylinder shall be empty of all product prior to weighing. The amount of liquefied gas charged into a cylinder shall be determined by weight, or, if charged at a pressure lower than the vapour pressure, by pressure shown on a vapour pressurehemper

42、ature chart for the specific gas. The weight of gas to be charged into a cylinder shall be determined from the water capacity and the filling ratio for the specific gas or by the maximum permissible filling weight, if indicated. Page 8 EN 1919 : 2000 Cylinder water capaciiy (V) litre 0.5 c VI 5-0 Ma

43、ximum allowable deviation in tare weight (grammes) f 50 $0 20 5.5 Verification of integrity of neck rindthreaded boss f 200 f 400 Before filling a cylinder, it shall be established that the neck ringheaded boss and guard (if fitted) are fit for the intended purpose and that the neck ring, if one exi

44、sts, is not loose. If there is a permanent valve guard or a welded-on shroud, it shall be checked to ensure that it is properly attached. 5.6 Verification of valve integrity and suitability 5.6.1 Prior to each fill, it shall be established that the installed valve is suitable for the intended gas (s

45、ee EN IS0 11 114-1 and prEN IS0 11 114-2:1999) and is in a satisfactory condition. As a minimum it shall be established that: - the valve is easy to operate; - the valve is free from contaminants; - the handwheel, or key operated spindle, is operable; - the safety device, if present, is undamaged; -

46、 the outlet threads and body are undamaged; - the valve attaches correctly to the filling connector. 5.6.2 During the filling cycle of a cylinder, the filler shall determine: - that the valve is not blocked (see annex B) and that the operation is progressing satisfactorily (e.g. by checking the weig

47、ht increase); - that the valve does not leak in the open position (e.g. by the use of a gas compatible leak test fluid). If leakage is suspected check for example at the bonnet or at the gland nut. Page 9 EN 191 9 : 2000 5.6.3 After filling a cylinder the filler shall ensure that the valve or pressu

48、re relief device does not leak when the valve is closed and disconnected from the fill connection. If leakage is suspected check for seat leakage at the valve outlet. Also it shall be checked that the interface between the valve and the cylinder is leaktight. For welded cylinders attention shall be

49、paid to the welds to ensure that the cylinder is free from leaks. 5.7 Check for correct filling Immediately after disconnecting from the filling line, the weight shall be checked by use of a scale capable of determining the gas content of that cylinder within the tolerances shown in table 1, according to the cylinder water capacity. The weight of the full cylinder shall not exceed the total weight allowed for that cylinder and gas combination. Finally it shall be checked that the cylinder is correctly identified and labelled. f a valve guard is fitted prior t