BRITISH STANDARD

BS EN 1800:2006

Transportable gas cylinders — Acetylene cylinders — Basic requirements, definitions and type testing

The European Standard EN 1800:2006 has the status of a British Standard

ICS 23.020.30

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BS EN 1800:2006

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2007

© BSI 2007

ISBN 978 0 580 50521 8

National foreword

This British Standard was published by BSI. It is the UK implementation of EN 1800:2006. It supersedes BS EN 1800:1999 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/7, Gas cylinder (receptacle) operations.A list of organizations represented on PVE/3/7 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.

Amendments issued since publication

Amd. No. Date Comments

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 1800

November 2006

ICS 23.020.30 Supersedes EN 1800:1998

English Version

Transportable gas cylinders - Acetylene cylinders - Basicrequirements, definitions and type testing

Bouteilles à gaz transportables - Bouteilles d'acétylène -Exigences fondamentales, définitions et essais de type

Ortsbewegliche Gasflaschen - Acetylenflaschen -Grundanforderungen, Definitionen und Typprüfung

This European Standard was approved by CEN on 29 September 2006.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech 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 STANDARDIZATIONC OM ITÉ EUR OP ÉEN DE NOR M ALIS AT IONEUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 1800:2006: E

EN 1800:2006 (E)

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Contents Page

Foreword..............................................................................................................................................................3 1 Scope ......................................................................................................................................................4 2 Normative references ............................................................................................................................4 3 Terms and definitions ...........................................................................................................................4 4 Basic requirements................................................................................................................................6 5 Approval procedures.............................................................................................................................7 6 Solvent free acetylene cylinders ........................................................................................................10 7 Acetylene cylinders used in bundles and battery-vehicles ............................................................10 Annex A (normative) Procedure for type testing of dissolved acetylene cylinders ..................................11 Annex B (normative) Determination of porosity of the porous material .....................................................15 Annex C (normative) Working pressure .........................................................................................................16 Annex D (normative) Production/batch test procedures for the preparation of porous material of

acetylene cylinders..............................................................................................................................17 Bibliography ......................................................................................................................................................18

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EN 1800:2006 (E)

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Foreword

This document (EN 1800:2006) has been prepared by Technical Committee CEN/TC 23 “Transportable gas cylinders”, the secretariat of which is held by BSI.

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 May 2007, and conflicting national standards shall be withdrawn at the latest by May 2007.

This European Standard has been submitted for reference into the RID and/or in the technical annexes of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or in the technical annexes of the ADR.

This document supersedes EN 1800:1998.

This revision has been prepared to:

a) introduce a new subclause 4.2.4 to cover requirements for joggle welds in welded cylinders;

b) bring the normative references up to date;

c) bring the editorial style up to date including the correction of a hanging clause under Clause 5 with consequent renumbering of subsequent sub-clauses;

d) add a reference to welded steel cylinders, EN 13322-1;

e) make the figures language independent.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech 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.

EN 1800:2006 (E)

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1 Scope

This European Standard specifies the basic requirements for acetylene cylinders with a maximum nominal water capacity of 150 l, including:

a) the procedure for type testing;

b) the procedure for production/batch testing;

c) the methods for determining the maximum permissible settled pressure;

d) the method for determining the porosity of the porous material;

It does not include details of designs for the cylinder shell.

2 Normative references

The following 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 1964-1, Transportable gas cylinders — Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres — Part 1: Cylinders made from seamless steel with an Rm value of less than 1 100 MPa

EN 1975, Transportable gas cylinders — Specification for the design and construction of refillable transportable seamless aluminium and aluminium alloy gas cylinders of capacity from 0,5 litre up to 150 litres

EN 13322-1, Transportable gas cylinders — Refillable welded steel gas cylinders — Design and construction — Part 1: Carbon steel

EN ISO 10297, Transportable gas cylinders — Cylinder valves — Specification and type testing (ISO 10297:2006)

prEN ISO 11117, Gas cylinders — Valve protection caps and valve guards — Design, construction and tests (ISO/DIS 11117:2006)

EN ISO 13769, Gas cylinders — Stamp marking (ISO 13769:2002)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1 acetylene cylinder cylinder containing a porous material with or without solvent for the storage of acetylene

NOTE For solvent free acetylene cylinders see Clause 6.

3.2 tare weight see EN ISO 13769 and 4.5

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EN 1800:2006 (E)

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3.2.1 for acetylene cylinders with solvent the tare weight is expressed by indicating two weights (in kilograms) TARE A and TARE S.

TARE A is the sum of the empty weight of the cylinder shell, the weight of the porous material, the specified weight of solvent content, the weight of the valve and the weight of all other parts which are permanently attached (e.g. by clamping or nut bolt fixing) to the cylinder when it is going to be filled,

TARE S is TARE A plus the weight of acetylene required to saturate the solvent at atmospheric pressure at 15 °C

3.2.2 for solvent free acetylene cylinders the tare weight is expressed by indicating TARE F, where TARE F is TARE A minus the weight of solvent

3.3 total weight for cylinders with solvent, total weight is TARE A plus the weight of the maximum acetylene content,

for solvent free cylinders, total weight is TARE F plus the weight of maximum acetylene content

3.4 water capacity capacity of the empty shell (excluding porous material) when filled with water

3.5 maximum acetylene content specified maximum weight of acetylene in the cylinder (in kilograms).

When a solvent is used it includes the weight of saturation gas

3.6 porous material single or multi-component material introduced or formed in the cylinder in order to fill it and which due to its porosity allows the absorption of the solvent/acetylene gas solution

NOTE The porous material may be either;

a) monolithic, consisting of a solid product obtained by reacting materials or by materials connected together with a binder,

or

b) non-monolithic, consisting of granular, fibrous or similar materials without addition of a binder.

3.7 porosity ratio, expressed as a percentage, of the volume of solvent which can be filled into the cylinder, complete with porous material, to the water capacity of the cylinder shell without porous material (see Annex B)

3.8 solvent liquid which is absorbed by the porous material and is capable of dissolving and releasing the acetylene

3.9 acetylene solvent ratio ratio of the maximum acetylene content to the specified weight of solvent content

EN 1800:2006 (E)

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3.10 working pressure maximum settled pressure in bar (gauge) at a uniform temperature of 15 °C in a cylinder containing the maximum acetylene content and the specified weight of solvent content

3.11 manufacturer company which fills the cylinder shell with porous material and which generally prepares it for charging with acetylene

4 Basic requirements

4.1 Cylinder shell

4.1.1 The acetylene cylinder shell shall conform to the requirements of the appropriate European Standard for design and construction of the cylinders, e.g.:

a) for seamless steel, EN 1964-1;

b) for seamless aluminium alloy, EN 1975;

c) for welded steel, EN 13322-1.

NOTE 1 Other standards for the design and construction of cylinders are in preparation and appropriate standards should be conformed to when published.

NOTE 2 This requirement does not exclude continued use and replacing of porous materials of cylinder shells conforming to national requirements.

4.1.2 The minimum test pressure for the cylinder shell shall be 60 bar (gauge).

4.2 Porous material

4.2.1 The porous material in the cylinder shall be of such quality that it enables the completed cylinder to pass the safety tests included in Annex A. For safety reasons the porous material shall be able to prevent or inhibit a dangerous decomposition of the acetylene.

4.2.2 There shall be no hazardous reaction between the shell, the porous material, the acetylene, the solvent and any parts in contact with them, at any time.

4.2.3 To ensure the quality of the porous material and the solvent, production/batch test procedures for the preparation of the porous material shall be established by the manufacturer in accordance with Annex D.

4.2.4 Where joggle welds are used for the cylinder shell it shall be verified that no voids are left in the joggle region and that there is no movement between the porous material and the cylinder wall in the region of the joggle, which could lead to damage of the porous material (for joggle welds, see EN 13322-1).

4.3 Solvent

The specified weight of solvent content shall be such that the cylinder can meet the requirements of the tests included in Annex A.

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EN 1800:2006 (E)

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4.4 Settled pressure

When the cylinder has been charged to the maximum acetylene content and the pressure has reached equilibrium at a uniform temperature of 15 °C, the pressure in the cylinder shall not exceed the working pressure for the type of cylinder (calculated in accordance with Annex C).

4.5 Cylinder identification

The identification shall conform to the requirements of EN ISO 13769.

NOTE EN 1089-1:1996, has been revised as EN ISO 13769, is in conflict with the actual transport regulations. For safety reasons it is recommended to calculate the tare weight under consideration of the following points:

a) rounding down to three significant figures but at least one digit after the decimal point;

b) including any kind of coating (e.g. painting).

4.6 Accessories

Valves for use with acetylene cylinders shall conform to the requirements of EN ISO 10297. Valve guards and caps for use with acetylene cylinders shall conform to the requirements of prEN ISO 11117.

NOTE Other accessories should conform to the requirements of appropriate European Standards, when available.

5 Approval procedures

5.1 General

Representative cylinders, selected according to 5.3 by or on behalf of the approving organisation shall withstand successfully the type tests as required in 5.4 prior to type approval being granted to the request made by the manufacturer of the porous material (see 5.2).

5.2 Requests for approval

5.2.1 A request for the approval of acetylene cylinders may cover a range of different volumes provided that:

a) the construction is similar (either seamless cylinders or cylinders with circumferential joggle welds or cylinders with butt welds only);

b) the nominal outside diameter of the cylinder falls within the range of either:

1) up to and inclusive of 270 mm or

2) greater than 270 mm;

c) the acetylene solvent ratios are the same;

d) the maximum acetylene content per litre water capacity is the same;

e) the cylinders contain the same porous material from the same factory and, the same solvent;

f) the cylinder shells are made from the same type of material (steel or aluminium etc.).

EN 1800:2006 (E)

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5.2.2 Each request for approval shall include the following information:

a) a schedule of the different types of acetylene cylinder (as defined in 5.3.2) which form the subject of the request for approval and which includes, for each size of cylinder, the following information:

1) nominal water capacity in litres;

2)solvent to be used;

3) specified weight of solvent content in kg;

4) maximum weight of acetylene content in kg;

5) test pressure of the cylinder in bar (gauge);

6) the working pressure at 15 °C;

7) name of manufacturer or place of production of porous material;

8) identification of porous material (trade name) to be stamped;

9) rejection criteria (e.g. maximum top clearance between porous material and shell);

b) a description of the porous material as it exists in the cylinder, which gives sufficient information concerning production process and quality control procedure to verify conformance to Annex D;

c) a report on the porosity determinations carried out by or on behalf of the manufacturer on the test cylinders provided, according to the method given in Annex B, and a statement of the maximum and minimum limits of porosity within which the porous material will be manufactured.

5.2.3 The request for approval shall be accompanied by a declaration from the manufacturer stating that in the event of approval, the production of the porous material will be in accordance with the information given in the request for approval in 5.2.2.

5.3 Submission of cylinders for type tests

5.3.1 The manufacturer shall submit the required number of representative cylinders including spares for type test. These cylinders shall be complete with all fittings and porous material, but without solvent or acetylene unless otherwise specified by the approving organisation.

The process of filling of the porous material shall be audited by or on behalf of the approving organisation.

5.3.2 Cylinders to be tested shall be selected so that:

a) for cylinders with a nominal water capacity greater than 60 l and up to 150 l, tests shall be on a cylinder of capacity considered to be representative of the size under consideration;

b) for cylinders with a nominal water capacity up to and including 60 l, tests shall be on the smallest and the largest cylinders of every range proposed by the manufacturer;

c) for cylinders with a nominal water capacity below 20 l, no test is required on cylinders having an acetylene content of not more than 90 % of the equivalent proportional content used in approved cylinders of 20 l or greater water capacity. However in such a case the maximum acetylene content shall not exceed 0,180 kg/l. For cylinders having a higher acetylene content, tests shall be carried out on cylinders of a nominal water capacity representative of the size under consideration.

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EN 1800:2006 (E)

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5.4 Cylinder type tests

5.4.1 General

Cylinders with porous material shall successfully withstand the type test specified in Annex A.

5.4.2 Prototype approval tests

For a single size of cylinder as defined in 5.3.2:

a) three cylinders shall be subjected to the elevated temperature test (see A.1);

b) three cylinders shall be subjected to the backfire test (see A.2). In case of test failures, as defined in A.2.2.5 and A.2.2.6, the test(s) shall be repeated.

For a range of cylinder sizes as defined in 5.3.2:

c) three cylinders of the largest size shall be subjected to the elevated temperature test (see A.1);

d) three cylinders of the smallest and largest size shall be subjected to the backfire test (see A.2). In case of test failures, as defined in A.2.2.5 and A.2.2.6, the test(s) shall be repeated.

5.4.3 Extended approval tests

For cylinders containing the same porous material and solvent for which prototype approval (see 5.4.2) has been given, a reduced test program may be performed.

a) For cylinders of the same size or range of sizes but of different construction and/or made from different type of material, but otherwise conforming to 5.2.1:

The elevated temperature test (see A.1) need not be carried out.

Three cylinders of the smallest and the largest size shall be subjected to the drop treatment as specified in A.2.1. They shall then be sectioned longitudinally and inspected for damage to the porous material (e.g. excessive clearance, cracks, disintegration). If the porous material is undamaged no further tests according to A.1 and A.2 are required. If the porous material is damaged a complete backfire test (see A.2) on a further three cylinders shall be carried out.

NOTE Welded cylinders previously approved with joggle welds need no extended approval test for other type of welds.

b) For cylinders outside the approved sizes (or ranges of sizes):

Three cylinders shall be subjected to the elevated temperature test (see A.1) in case the new size (or range of sizes) is larger than previously approved, otherwise the elevated temperature test need not be carried out.

Three cylinders of each size shall be subjected to the backfire test (see A.2). In case of test failures, as defined in A.2.2.5 and A.2.2.6, the test(s) shall be repeated.

EN 1800:2006 (E)

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6 Solvent free acetylene cylinders

Acetylene cylinder types tested with solvent intended for use as solvent free acetylene cylinders shall:

a) have passed the type test procedure with solvent as described in Annex A;

b) not have been previously filled with solvent;

c) conform to 4.4 for the acetylene pressure, using the constants given in Table C.1 for acetone and ms equal to the specified acetone content for the type test;

d) be stamped with the value of TARE F in kg and the letters "FS" instead of the specified weight of solvent;

e) bear the words "solvent free" painted in a clear and visible manner.

The maximum acetylene content shall be calculated from the working pressure in the cylinder at 15 °C, the density of acetylene and the free volume (the water capacity of the cylinder shell multiplied by the porosity).

7 Acetylene cylinders used in bundles and battery-vehicles

Acetylene cylinders in accordance with this European Standard may be used without further approval in cylinder bundles and battery-vehicles manifolded together and filled simultaneously under the conditions specified in EN 12755 and EN 13720.

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EN 1800:2006 (E)

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Annex A (normative)

Procedure for type testing of dissolved acetylene cylinders

A.1 Elevated temperature test

This test shall be carried out on cylinders which have been filled with the specified weight of solvent content and charged with acetylene to the maximum content as prescribed by the manufacturer, plus an overcharge of 5 % acetylene.

Each cylinder shall be placed in a water bath, the mean temperature of which is maintained at (65 ± 2) °C, until the pressure in the cylinder becomes constant or the pressure curve shows that hydraulic pressure has developed. If hydraulic pressure development is evident the test shall be stopped.

If during this test the pressure curve indicates that hydraulic pressure has developed in the cylinder, or if the maximum pressure in the cylinder exceeds the cylinder test pressure, the cylinder shall be considered to have failed the test.

For the acetylene cylinder to be accepted, all three cylinders shall pass the elevated temperature test.

A.2 Backfire test

A.2.1 Drop procedure

Each cylinder, shall be filled with the weight of solvent specified by the manufacturer and shall be fitted with a device that will prevent loss of cylinder contents during the drop procedure.

Each cylinder shall be dropped ten times without friction between the cylinder and the guides from a height of 0,70 m on to a concrete block covered with a protective plate similar to that in the apparatus shown in Figure A.1.

The clearance between the top of the cylinder and the porous material shall be measured both before and after the drop procedure and prior to the backfire procedure and recorded in the test report.

Any subsidence or other defect of the porous material which has taken place during the drop procedure shall not be corrected before submitting the cylinders to the backfire procedure.

A.2.2 Backfire procedure

A.2.2.1 After having undergone the drop procedure (see A.2.1), the cylinder shall be provided with an explosion tube directly connected to the cylinder. The capacity of the explosion tube shall be 75 ml with an internal diameter of 30 mm terminating in a passage 4 mm in diameter with a length of 70 mm, connecting directly into the cylinder. The explosion tube shall be provided with the means of ignition consisting of a suitable wire, such as tungsten, 0,2 mm in diameter and 15 mm in length (see Figure A.2).

There shall be a means of ensuring that the required energy has been provided to initiate the acetylene decomposition in the explosion tube (e.g. by inspection of the wire after firing to ensure it has fused).

A.2.2.2 The cylinders fitted with the appropriate equipment shall be charged with acetylene to the maximum acetylene content proposed by the manufacturer plus an overcharge of 5 % taking all necessary steps to purge the cylinder of non-soluble gases as far as practicable.

EN 1800:2006 (E)

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A.2.2.3 After filling each cylinder shall then be:

a) stored horizontally for at least 3 days at a minimum temperature of 15 °C;

b) placed vertically in a water bath, maintained at a temperature of 35 °C, for 3 h except for cylinders below 10 l water capacity in which case the heating time shall be at least 1,5 h;

c) placed vertically in the firing test location. Before the pressure inside the cylinder has fallen to a value not more than 4 % below the maximum pressure attained in the cylinder during its heating as described in A.2.2.3 b) it is fired by the igniting device.

A.2.2.4 The cylinder shall fail the test if:

d) it bursts;

e) there is significant deformation of the cylinder shell;

f) there is any release of gas within 24 h of the backfire.

For the acetylene cylinder to be accepted all tested cylinders shall pass the backfire test, except as provided for in A.2.2.5 and A.2.2.6.

A.2.2.5 If there is evidence of a fault in the test equipment or in the procedure it is necessary to repeat the failed test.

A.2.2.6 If the pressure after 24 h in one of the tested cylinders is higher than 30 bar (gauge) related to the temperature of 15 °C another 3 cylinders shall be subjected to the complete backfire test which all have to pass.

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EN 1800:2006 (E)

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Dimensions in millimetres

Key

1 ground level

2 height of travel

3 concrete

4 sand

5 instantaneous release system

6 the guides should be suitable for all diameters of cylinder

7 protective plate (see note)

8 soundproof packing

NOTE 1 Foundation: recommended composition for concrete: liquid cement 50,8 kg, sand 71 l, gravel (5 mm to 19 mm) 142 l. The concrete should be cast in one piece. It is important that the surface on which the protective plate is placed be smooth and horizontal.

NOTE 2 The protective plate consists of a 25 mm thick sheet of phenolic resin impregnated cotton fabric (16 to 18 thread/cm). The Brinell hardness of this plate is 48 HB (10 mm ball, load of 300 kg).

Figure A.1 — Typical apparatus for drop test

EN 1800:2006 (E)

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Key

1 firing device

2 valve enabling the test cylinder to be filled with acetylene

3 ignition source

4 explosion tube

5 taper part to be designed to suit neck of cylinder

Figure A.2 — Typical arrangement of an explosion tube for backfire procedure

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EN 1800:2006 (E)

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Annex B (normative)

Determination of porosity of the porous material

B.1 A cylinder filled with the porous material is fitted with a valve and weighed. It is subjected to a vacuum so that after standing for 12 h, with the valve closed, the pressure does not exceed 27 mbar (absolute). It is then filled with acetone under a pressure not exceeding 18 bar (gauge). When the acetone no longer penetrates, the valve is closed and the cylinder is weighed.

B.2 The cylinder is again subjected to a vacuum for at least 15 min and further acetone is admitted. This cycle of operations is repeated until all air is expelled from the cylinder and constant weight obtained.

B.3 The cylinder is then placed in a room where the temperature is constant, the valve being left open and connected to a vessel to ensure a vertical column of acetone, for at least 24 h.

B.4 The valve is then closed, the acetone container disconnected and the cylinder weighed.

B.5 The difference between the final weight in accordance with B.4 and that of the cylinder before the introduction of the acetone represents the weight of acetone introduced.

B.6 The porosity P, as a percentage, is given by Equation B.1:

P = mV

×

×ρ

100 (B.1)

where

m is the weight of acetone in kilograms;

V is the water capacity, in litres, of the cylinder shell without porous material;

ρ is the density of acetone, in kilograms per litre, at the room temperature in accordance with B.3.

EN 1800:2006 (E)

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Annex C (normative)

Working pressure

The pressure settled at a uniform temperature of 15 °C in a cylinder containing the maximum acetylene content and the corresponding weight of solvent shall be calculated by using Equation C.1 (rounded up to the next full bar):

p = a m / m + am / m + a

+ wA S

A S1

2

3

× 1,7 (C.1)

where

mA is the maximum acetylene content in kilograms;

mS is the specified weight of solvent content in kilograms;

pw is the working pressure in bar (gauge);

3

2

1

aaa

are given constants with values in Table C.1.

Table C.1 — Constants

Acetone DMF a

a1 59,853 - 50,671

a2 - 0,020 2 0,095 8

a3 1,524 7 - 2,525 3

a DMF: Dimethylformamide

For other solvents it is the responsibility of the manufacturer to have determined experimentally the working pressure.

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EN 1800:2006 (E)

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Annex D (normative)

Production/batch test procedures for the preparation of porous material

of acetylene cylinders

The manufacturer shall establish quality control procedures including test frequencies for the manufacture of the porous material which shall include at least:

a) specifications for the raw material used;

b) procedures for the goods inwards inspection of raw materials;

c) procedures for testing every batch of porous material in the condition it will be filled into the cylinders;

d) means for recording temperature/time curves for any heat treatment performed on every batch;

e) procedures for measuring and recording the gap between the porous material and cylinder wall including gap tolerances;

f) means for checking and/or recording all necessary weights and volumes stamp-marked onto the cylinders;

g) any additional quality relevant requirements necessary for the type of porous material manufactured;

h) means for determination of the porosity of the porous material by checking it either by a test described in Annex B or by calculation such as using Equation D.1:

P = - ′′

×ρ ρρ

100 (D.1)

where

P is the porosity of the porous material in %;

ρ' is the true density (material density) determined by taking dry porous material samples from the cylinder after final preparation and measured with a porosimeter;

ρ is the apparent density determined by weighing a cylinder before and after preparation, taking into account the actual water capacity;

i) for non monolithic porous materials - means for checking excessive settlement of the porous material (e.g. by the drop treatment according to A.2.1).

EN 1800:2006 (E)

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Bibliography

[1] Miller, B.Sc., M. A., Ph.D., F.R.I.C. Acetylene - Its properties, manufacture and use; Volume 1; S.A., Ernest Benn Ltd., London, 1965.

[2] EN 1089-1, Transportable gas cylinders — Gas cylinder identification (excluding LPG) — Part 1: Stampmarking (has been withdrawn and superseded by EN ISO 13769)

[3] EN 1089-2, Transportable gas cylinders — Gas cylinder identification (excluding LPG) — Part 2: Precautionary labels (will be superseded by prEN ISO 7225)

[4] EN 962, Transportable gas cylinders — Valve protection caps and valve guards for industrial and medical gas cylinders — Design, construction and tests (will be superseded by prEN ISO 11117)

[5] EN 1089-3, Transportable gas cylinders — Gas cylinder identification (excluding LPG) — Part 3: Colour coding

[6] ADR, European agreement on the International Carriage of Dangerous Goods by Road

[7] RID, Regulations concerning the International Carriage of Dangerous Goods by Rail

[8] EN 12755, Transportable gas cylinders — Filling conditions for acetylene bundles

[9] EN 13720, Transportable gas cylinders — Filling conditions for acetylene battery vehicles

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BS EN 1800:2006

BSI389 Chiswick High RoadLondonW4 4AL

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Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI.

This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.

Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyright@bsi-global.com.

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