GUIDANCE NOTE 7 THE SAFE USE OF INDIVIDUAL PORTABLE OR ... · THE SAFE USE OF INDIVIDUAL PORTABLE...

GUIDANCE NOTE 7

THE SAFE USE OF INDIVIDUAL

PORTABLE OR MOBILE CYLINDER

GAS SUPPLY EQUIPMENT

REVISION 3: 2013

Incorporating Corrigendum 1 – January 2014

BCGA GN 7 – Revision 3

GUIDANCE NOTE 7

THE SAFE USE OF INDIVIDUAL PORTABLE OR MOBILE

CYLINDER GAS SUPPLY EQUIPMENT

REVISION 3: 2013

Incorporating Corrigendum 1 – January 2014

Copyright © 2013 by British Compressed Gases

Association. First printed 2000. All rights reserved. No

part of this publication may be reproduced or transmitted in

any form or by any means, electronic or mechanical,

including photocopy, without permission from the

publisher:

BRITISH COMPRESSED GASES ASSOCIATION Registered office: 4a Mallard Way, Pride Park, Derby, UK. DE24 8GX

Company Number: 71798, England

Website: www.bcga.co.uk

ISSN 0260-4809


PREFACE

The British Compressed Gases Association (BCGA) was established

in l971, formed out of the British Acetylene Association, which

existed since l901. BCGA members include gas producers, suppliers

of gas handling equipment and users operating in the compressed gas

field.

The main objectives of the Association are to further technology, to

enhance safe practice, and to prioritise environmental protection in

the supply and use of industrial gases, and we produce a host of

publications to this end. BCGA also provides advice and makes

representations on behalf of its Members to regulatory bodies,

including the UK Government.

Policy is determined by a Council elected from Member Companies,

with detailed technical studies being undertaken by a Technical

Committee and its specialist Sub-Committees appointed for this

purpose.

BCGA makes strenuous efforts to ensure the accuracy and current

relevance of its publications, which are intended for use by

technically competent persons. However this does not remove the

need for technical and managerial judgement in practical situations.

Nor do they confer any immunity or exemption from relevant legal

requirements, including by-laws.

For the assistance of users, references are given, either in the text or

Appendices, to publications such as British, European and

International Standards and Codes of Practice, and current legislation

that may be applicable but no representation or warranty can be

given that these references are complete or current.

BCGA publications are reviewed, and revised if necessary, at five-

yearly intervals, or sooner where the need is recognised. Readers are

advised to check the Association’s website to ensure that the copy in

their possession is the current version.

This document has been prepared by BCGA Technical Sub-

Committee 3. This document replaces BCGA GN 7, Revision 2:

2008. It was approved for publication at BCGA Technical

Committee 147. This document was first published on 07/11/2013.

For comments on this document contact the Association via the

website www.bcga.co.uk.

Corrigendum 1 – January 2014 – incorporates a correction to the text

in Section 4.4. and Table 1.


CONTENTS

Section Page TERMINOLOGY AND DEFINITIONS

1

1. INTRODUCTION

3

2. SCOPE

3

3. SOME PROPERTIES OF THE GASES USED 4

3.1 Oxygen 4

3.2 Liquefied Petroleum Gases (LPG), propane, butane, etc. 4

3.3 Acetylene 5

3.4 Hydrogen 5

3.5 Methane 6

3.6 Carbon Dioxide 6

3.7 Nitrous Oxide 6

3.8 Inert gases, argon, nitrogen, helium etc. 6

3.9 Gas mixtures

7

4. PRESSURE SYSTEMS REGULATIONS 7

4.1 Introduction 7

4.2 Provision of information and marking 8

4.3 Written Scheme of Examination 8

4.4 Maintenance

8

5. SAFETY PRECAUTIONS: EQUIPMENT 11

5.1 Pressure regulators 11

5.2 Hose assemblies 12

5.3 Non-return valves 14

5.4 Flashback arrestors 14

5.5 Personal Protective Equipment

14

6. PROVISION OF SAFETY DEVICES 14

6.1 Inert gases 14

6.2 Oxygen and flammable gases excluding acetylene 14

6.3 Acetylene systems

15

7. SAFETY PRECAUTIONS: WORKING AREA 15

7.1 General 15

7.2 Confined spaces 15

7.3 Oxygen enrichment

16

8. CYLINDER HANDLING AND STORAGE 16

8.1 Cylinder handling 16

8.2 Cylinder storage

17

9. PREPARATION FOR USE 17

9.1 Location of cylinders 17

9.2 Cylinders 17

9.3 Regulators 18

9.4 Safety devices 19


9.5 Hoses 19

9.6 Pressurising the system

19

10. CLOSING DOWN PROCEDURE

19

11. EMERGENCY PROCEDURE: CYLINDERS 20

11.1 Key actions for dealing with gas cylinders in the event of fire 20

11.2 Fire damaged gas cylinders

21

12. REFERENCES * 22

* Throughout this publication the numbers in brackets refer to references in Section 12.

Documents referenced are the edition current at the time of publication, unless otherwise

stated.

1


TERMINOLOGY AND DEFINITIONS

The following describes the functions of the main items of equipment and explains the

meaning of the significant items in this Guidance Note. The references quoted in Section 12

should be consulted for more detailed and precise information.

Excess flow

cut-off valve

A device which closes in the event of flow exceeding a predetermined value.

Flow meter A device for measuring gas flow by volume or mass per unit time.

Flashback

arrestor

A device which arrests a flame front (caused by flashback or decomposition)

and which is suitable for the most severe type of flame, which may occur,

i.e. detonation. It shall be effective in stopping a flame coming from either

one or both directions depending upon the application and design. They

shall conform to BS EN 730 (20) or ISO 5175 (25).

Hose

assemblies

The means by which the gases are conveyed from the pressure regulator to

the process equipment. Hose assemblies can be used to convey the gas from

the cylinder to the process equipment at pressures up to the maximum

regulator outlet pressure.

May Indicates an option available to the user of this Code of Practice.

Multi-

functional

safety device

A unit, which embodies two or more of the safety devices as defined in these

items.

1. Flashback arrestor

2. Non-return valve

3. Pressure relief valve

4. Pressure sensitive cut-off valve

5. Temperature sensitive cut-off valve

6. Excess flow cut-off valve

Non-return

valve

A self-actuating valve which prevents the passage of gas in the opposite

direction to the normal gas flow.

Pressure Pressures referred to in this document are gauge pressures except where

otherwise stated.

Pressure

gauge

An instrument for indicating, by pointer and scale, the amount by which the

pressure applied to it differs from that of the surrounding atmosphere.

Pressure

regulator

Fitted to the outlet of the gas cylinder valve, the pressure regulator reduces

the pressure of the gas from the cylinder pressure to the lower pressure

required for the operation of the process equipment.

Regulators may be designed to be adjustable in respect of outlet pressure or

may be pre-set. For working pressures up to 20 bar they shall conform to BS

2


EN ISO 2503 (23) or BS EN ISO 7291 (26). Regulators outside the scope of

these standards shall conform to the essential safety requirements of these

standards.

Pressure reduction within the regulator may be in 1 or 2 stages (single or two

stage regulators).

Pressure regulators may be supplied with a pressure gauge or indicator to

show the cylinder contents and a pressure gauge or flowmeter to indicate the

outlet pressure or flow.

Pressure

relief valve

A valve, which automatically vents gas to the atmosphere in order to prevent

a build-up of pressure in a system when the pressure exceeds a

predetermined value. The pressure-relief valve automatically re-seats when

the conditions causing the over-pressure are corrected.

Pressure

sensitive cut-

off valve

A valve which automatically stops the gas flow in the event of a slow or

sudden back-pressure from the downstream side of the cut-off valve. The

valve remains closed until manually reset.

Safety device A device which, when correctly used and placed, prevents any damage or

injury from misuse or malfunction of the process equipment. The various

devices shall conform to BS EN 730 (20) or ISO 5175 (25) as appropriate.

Shall Indicates a mandatory requirement for compliance with this Code of

Practice.

Should Indicates a preferred requirement but is not mandatory for compliance with

this Code of Practice.

Temperature

sensitive cut-

off valve

A valve which automatically stops the gas supply when a predetermined

temperature is reached.

VIPR

(Valve with

integrated

pressure

regulator)

Special cylinder valves known as VIPR’s which incorporate a pressure

regulator. Manufactured in accordance with BS EN ISO 22435 (29).

3


GUIDANCE NOTE 7

THE SAFE USE OF INDIVIDUAL PORTABLE OR

MOBILE CYLINDER GAS SUPPLY EQUIPMENT

1. INTRODUCTION

This Guidance Note has been prepared by the British Compressed Gases Association (BCGA)

to provide guidance on the safe use of individual cylinder gas supplies, the gas being controlled

by a single cylinder mounted regulator.

The Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) (9) put

obligations on site operators where oxidising or flammable gases are used or stored. This

document explains these obligations in detail and presents model risk assessments, such as

BCGA Guidance Note (GN) 13 (37), DSEAR Risk Assessment, for typical installations within

the scope of DSEAR (9). It should therefore be of direct interest to any organisation that

manufactures, uses, stores or distributes flammable or oxidant gases.

BCGA gratefully acknowledges the comments and assistance provided by the Health and

Safety Executive (HSE) in the preparation of this Guidance Note.

2. SCOPE

This Guidance Note gives a guide to minimum safety standards required for the use, inspection

and maintenance of individual portable or mobile cylinder gas supply equipment, the gas being

controlled by a single cylinder mounted regulator, which is used to deliver industrial, fuel and

air gases to downstream equipment.

This guide covers any industry or process where single cylinders or bundles are in use, such as

industry, laboratories, schools, universities and colleges, etc.

The gases covered include argon, nitrogen, helium, oxygen, hydrogen, nitrous oxide, acetylene,

Liquefied Petroleum Gas (LPG), methane, carbon dioxide and mixtures of these gases. Toxic,

corrosive and medical gases are not included.

The Guidance Note only covers the gas delivery equipment and reference should be made to

the literature from the suppliers of the process equipment. It does not apply to permanently

piped gas distribution systems, which are covered in BCGA Code of Practice (CP) 4 (30),

Industrial gas cylinder manifolds and distribution pipework (excluding acetylene), BCGA CP 6

(31), The safe distribution of acetylene in the pressure range 0 - 1.5 bar (0 – 22 lbf/in2), and

BCGA CP 18 (33), The safe storage, handling and use of special gases in the micro-

electronics and other industries, for special gases. Oxy-fuel gas systems are covered in BCGA

CP 7 (32), The safe use of oxy-fuel gas equipment (individual portable or mobile cylinder

supply).

The safety standards laid down are the minimum for safe working practice and the importance

of the skill and competence of operators, supervisors and managerial staff is stressed.

Operators using equipment covered by this Guidance Note shall be trained in the correct

4


procedures for the safe use of the equipment and the emergency procedures to be carried out in

the event of an incident. Such training should be both practical and theoretical. It should

incorporate competency assessment and be formally recorded. Periodic retraining is

recommended.

3. SOME PROPERTIES OF THE GASES USED

It is a legal requirement that the gas supplier provides a Safety Data Sheet to the customer

whenever a product is supplied for the first time, in accordance with the Chemicals (Hazard

Information and Packaging for Supply) Regulations (CHIP) (11). The exact requirements for

Safety Data Sheets are now included in the Registration, Evaluation, Authorisation and

restriction of CHemicals (REACH) Regulations (14), Article 31, Requirements for Safety Data

Sheets. Safety Data Sheets can be obtained for all gases and are to be available for the user of

the gas.

NOTE: The CHIP (11) Regulations brings national legislation into line with the transitional

arrangements set out in European Regulation (EC) No 1272/2008 (13) on the Classification,

Labelling and Packaging of Substances and Mixtures (CLP). The CLP (13) Regulation entered

into force across all EU member states, including the UK, on 20 January 2009. The CLP (13)

Regulation has applied to substances that are placed on the market since 1 December 2010. It

is not mandatory to use the CLP (13) classification system to classify chemical mixtures

(preparations) until 1 June 2015. The CHIP (11) Regulations will be repealed from 1 June

2015, from when suppliers must comply with the CLP (13) Regulation.

Refer to BCGA Technical Information Sheet 22 (42), BCGA policy on connecting gas

cylinders, when connecting gas cylinders.

NOTE: All gases, except oxygen and air, are potentially asphyxiating, i.e. can suffocate. Use

in confined spaces is potentially hazardous. See Section 7.2.

WARNING: It is never safe to search for gas leaks with a naked flame.

3.1 Oxygen

(i) Vigorously supports combustion. Many materials which will not normally

burn in air will readily burn in an oxygen-rich atmosphere.

(ii) May react violently as an oxidant e.g. with oils, greases, some solvents and

some metals.

(iii) Colourless.

(iv) Odourless.

(v) Non-toxic, non-flammable.

3.2 Liquefied Petroleum Gas (LPG), propane, butane, etc

(i) Usually odorised to give characteristic smell.

(ii) Colourless

(iii) Flammable and will ignite from a spark or by contact with hot metal.

5


(iv) A concentration of as little as 2 % of commercial LPG in air will burn.

(v) Non-toxic, but asphyxiating by depletion of oxygen.

(vi) Is a fire and explosion hazard.

(vii) Heavier than air and will collect in pits, drains or trenches.

3.3 Acetylene

(i) Naturally colourless.

(ii) Non-toxic, but asphyxiating by depletion of oxygen.


(iv) Concentrations from 2.5 % to 81 % in air will burn.

(v) Is a fire and explosion hazard.

(vi) Garlic like odour.

(vii) Has a distinct fire property which requires special precaution. The heat of a

fire may initiate decomposition. This is an exothermic (heat creating

reaction) and the risk is that, if not properly dealt with, acetylene cylinders

can reheat and even explode some hours after the fire is extinguished.

(viii) Lighter than air (will collect in roof spaces, etc).

3.4 Hydrogen

(i) Naturally colourless.

(ii) Non-toxic.

(iii) Much lighter than air. May concentrate in roof spaces.

(iv) Burns with a very pale blue flame, often difficult to see.

(v) Do not carry out any valve clearance procedure by releasing gas. Refer to

BCGA Technical Information Sheet 22 (42), BCGA policy on connecting gas

cylinders.

(vi) Naturally odourless.

(vii) Asphyxiating by depletion of oxygen.

(viii) Concentration from 4 % to 75 % of hydrogen in air will burn.

(ix) Extremely flammable and easily ignited. It will ignite from a spark or by

contact with hot metal.

(x) Is a fire and explosion hazard.

6


3.5 Methane

(i) Colourless

(ii) Lighter than air - May concentrate in roof spaces.


(iv) A small concentration in air can burn.

(v) Naturally odourless.

(vi) Non-toxic, but asphyxiating by depletion of oxygen.

(vii) Is a fire and explosion hazard.

3.6 Carbon dioxide

(i) Colourless.

(ii) Heavier than air, so can collect in pits, drains or trenches.

(iii) Toxic, with a Workplace Exposure Limit of 5000 ppm (8 hour time weighted

average). Refer to HSE EH 40 (17), Workplace Exposure Limits.

NOTE: Effects of exposure to substances hazardous to health vary considerably

depending on the nature of the substance and the pattern of exposure. Some effects

require prolonged or accumulated exposure. The long-term (8-hour time weighted

average) exposure limit is intended to control such effects by restricting the total

intake by inhalation over one or more work-shifts, depending on the length of the

shift. Any exposure to substances hazardous to health should be calculated

according to the approved method in HSE EH 40 (17).

(iv) Slightly pungent odour at high concentrations.

3.7 Nitrous oxide

(i) Colourless.

(ii) Heavier than air, so can collect in pits, drains or trenches.

(iii) Non-toxic, but has a narcotic effect when breathed in high concentrations. It

therefore has been allocated a Workplace Exposure Limit of 100 ppm (8 hour

time weighted average). Refer to HSE EH 40 (17).

(iv) Odourless.

(v) Vigorously supports combustion.

(vi) May react as an oxidant e.g. with oils, greases and some solvents.

3.8 Inert gases, argon, nitrogen, helium, etc.

(i) Chemically non-reactive in most situations.

(ii) Non-toxic, but asphyxiating by depletion of oxygen.

7


(iii) Colourless.

(iv) Can be either lighter (e.g. helium) or heavier (e.g. argon) than air, so can

collect in pits, drains, trenches or roof spaces.

(v) Odourless.

3.9 Gas mixtures

These must be treated as if they exhibit the properties of all the component gases, unless

their hazard classification demonstrates otherwise.

4. PRESSURE SYSTEMS REGULATIONS

4.1 Introduction

It should be noted that the overall intention of the Pressure Systems Safety Regulations

(PSSR) (6) is to prevent the risk of injury from the uncontrolled release of stored energy

as a result of the failure of a pressure system, or part of a pressure system. Compliance

requires that equipment covered by this Guidance Note be properly maintained (see

Section 4.4).

The HSE has advised owners and users of portable gas (oxy-acetylene or oxy-propane)

welding and cutting sets that a Written Schemes of Examination, as described in the

PSSR (6) Regulation 8, is not required. However, it is emphasised that such equipment

can present a risk of fire or explosion if not assembled, operated and maintained

correctly.

In the case of other equipment covered by this Guidance Note, the need for a Written

Scheme of Examination must be formally assessed in accordance with the PSSR (6)

Regulation 8. Many systems will consist only of a cylinder regulator, with a flexible

hose feeding the output of the regulator to the process equipment. In such cases, where

assessment of the potential risk results in a recognition that injury could result from a

failure of the system, then a Written Scheme of Examination is required to be drawn up.

Such a Scheme could be based, for example, on Table 1, provided it included

information about the nature and frequency of the required examination of all protective

devices and parts of the system where a defect would give rise to danger (less the checks

listed as “Each time the equipment is used”, which are part of routine maintenance.)

Once a suitable Scheme has been drawn up, it must be formally approved by the

Competent Person. The Competent Person, as defined in the PSSR (6), may be, for

example, an inspection body appointed by the user’s insurers, or any other suitably

qualified person.

When a Written Scheme of Examination is implemented for the equipment, written

records must be maintained by the User covering the Scheme itself and the records of

examinations carried out by the Competent Person under the Scheme.

NOTE: The equipment within the scope of this Guidance Note is covered by the

PSSR (6). However, cylinders are within the scope of the Carriage of Dangerous Goods

and Use of Transportable Pressure Equipment Regulations (12). These refer to the

controls on cylinders (or Transportable Pressure Receptacles) – they are the

responsibility of the supplier and filler of the cylinders and, as such, are not addressed in

8


this Guidance Note. If the user has any question over the application of the Regulations

to any cylinder, it should be referred to the owner of that cylinder.

4.2 Provision of information and marking

The supplier or employer of a person who puts into service, modifies or repairs a mobile

system, or components of it, shall provide sufficient information to enable the user of a

pressure system to determine how to operate and maintain it safely.

Such information for equipment for use with individual portable or mobile cylinder

supply may include the following:

(i) Safe operating limits for pressure and temperature.

(ii) Operating and maintenance instructions.

The above information may be included in the operating instructions supplied to the user,

or marked on the equipment.

4.3 Written Scheme of Examination

Written Schemes of Examination may be required for equipment covered by the scope of

this Guidance Note in certain circumstances, see Section 4.1.

4.4 Maintenance

Maintenance of equipment is a requirement of the PSSR (6) where failure to maintain

could give rise to danger. It is the responsibility of the user to ensure that this is carried

out (Regulation 12). Under the Health and Safety at Work etc. Act (1), as well as the

Provision and Use of Work Equipment Regulations (4) there are requirements for the

maintenance of equipment to ensure safety. In the case of cylinders fitted with a VIPR

(valve with integral pressure regulator) the responsibility for the routine replacement lies

with the owner, typically the gas supplier.

It is essential that routine maintenance, as detailed in Table 1, taking into account

manufacturers’ / suppliers’ recommendations, is carried out before use by the operator

and at least annually.

Annual maintenance shall be carried out by a person who has been formally trained to

demonstrate that he has:

(i) sufficient practical experience of related gas equipment,

and

(ii) theoretical knowledge of the functioning of the equipment, the properties of

gases used, the potential defects and hazards which may occur and their

importance to the integrity and safety of the equipment.

It is the duty of the employer to ensure persons undertaking maintenance activities are

adequately trained and to establish competency. All training should be formally

recorded. Periodic retraining is strongly recommended.

9


TABLE 1: GUIDANCE ON MAINTENANCE

EQUIPMENT MAINTENANCE

EACH TIME THE EQUIPMENT IS

CONNECTED TOGETHER

As per the manufacturer’s instructions,

and to include

EACH TIME THE

EQUIPMENT IS USED

(by the operator).

Carry out a visual examination

to determine suitability for

service (e.g. gas, pressure

rating, damage), oil or grease

contamination.

ANNUAL **

(This inspection may be

more frequent dependant

on conditions of use)

REPLACEMENT /

REFURBISHMENT

INTERVALS

(May be more

frequent dependant

on conditions of use)

REPLACEMENT /

REFURBISHMENT

GUIDELINE

Carry out a visual examination to

determine suitability for service (e.g.

gas, pressure rating, damage), oil or

grease contamination.

To include, as per

instructions for Each Time

the Equipment is

Connected Together, plus:

1. REGULATORS

and their integral

protective devices

Check condition of threads and sealing

surfaces, oil or grease contamination.

Leak test all joints at working pressure.

Check that gauges on regulator zeroes

correctly and rises smoothly when gas

is turned on.

Leak test all joints at working

pressure.

Check that gauges on regulator

zeroes correctly and rises

smoothly when gas is turned on.

Functional tests to ensure

correct operation.

Typically this will include

a creep test to ensure

regulator integrity.

5 years from date of

manufacture or

manufacturer’s

recommendations. *

NOTE: If regulators

are refurbished this

shall be in

accordance with

BCGA TIS 19 (41)

Replace with a new, or

service exchange unit.

2. FLASHBACK

ARRESTORS

and their integral

cut off valves.





pressure.

Check unit for flow

restriction. Reverse flow

to ensure correct operation

of non-return valves.

Where pressure sensitive

cut off valves are fitted,

they must operate at a

pressure of no greater than

1.2 bar. If of a pressure

sensitive type, check shut

off in the tripped condition

in the direction of flow.

5 years from date of

manufacture or

manufacturer’s

recommendations. *



10


3. HOSE

ASSEMBLIES

(including NON-

RETURN

VALVES)

Check threads and sealing surfaces.

Check hoses for condition of cover

(e.g. kinking twisting or cracking).

Leak test of all joints at working

pressure.

Check hoses for condition of

cover (e.g. kinking twisting or

cracking). Leak test of all joints

at working pressure.

Reverse hose to ensure the

correct operation of non-

return valve where fitted.

Bend hose in a tight radius

to ensure reinforcement is

not visible and there is no

sign of collapse or

distortion.

Determined by local

operating conditions.

Replace as required.

4. BLOWPIPES Check condition of the nozzle and inlet

seatings for damage. Leak test all

joints at working pressure.

Check condition of the nozzle

and inlet seatings for damage.


pressure.

Test valve functions.

Blank exits and leak test

for internal malfunction.

Determined by local

operating conditions.



5. VIPR

(Valve with

Integrated

Pressure

Regulator)




Check that pressure gauge on regulator

zeroes correctly and rises smoothly

when gas is turned on.


pressure.

Check that pressure gauge on

regulator zeroes correctly and

rises smoothly when gas is

turned on.

Functional tests to ensure

correct operation.

Typically this will include

a creep test to ensure

regulator integrity.

This is the

responsibility of the

owner, typically the

gas supplier.

This is the

responsibility of the

owner, typically the

gas supplier.

* Regulator and flashback arrestor elastomers and seals will wear and deteriorate from their date of manufacture whether in gas service or not. Items stored out of gas service

for 1 year or over should receive inspection as per the annual maintenance inspection. The owner / user is required to identify the date when equipment is due for inspection /

maintenance. Refer to BCGA TIS 18 (40), Gas equipment inspection / replacement date marking.

** This should be carried out by a suitably trained person.

Such training will include the following topics:

Sufficient practical experience of oxy-fuel gas equipment, and

theoretical knowledge of the functioning of the equipment, the properties of gases used, the potential defects and hazards which may occur and their importance to the

integrity and safety of the equipment.

It is the duty of the employer to ensure persons undertaking maintenance activities are adequately trained and to establish competency. All training should be formally recorded. Periodic retraining is strongly recommended.

11


5. SAFETY PRECAUTIONS: EQUIPMENT

Managers, supervisors and operators should note suppliers’ instructions for the correct and safe

use of all equipment and materials used in the processes.

They should give consideration to the hazards which may be associated with the place of work,

in accordance with the Management of Health and Safety at Work Regulations (5). They

should make use of the additional references given in Section 12, in accordance with the nature

of the work and responsibility.

Equipment should conform to appropriate Standards, including those listed in Section 12. An

essential requirement of the material from which such equipment is manufactured is

compatibility with the gas content. Reference should be made to appropriate standards, for

example:

• BS EN ISO 11114 (27). Transportable gas cylinders. Compatibility of cylinder &

valve materials with gas contents. Part 1, Metallic materials. Part 2, Non-metallic

materials.

5.1 Pressure regulators

Pressure regulators should be treated as precision instruments and should not be jarred or

knocked. They should not be stressed by rapid opening of the cylinder valve (this is also

important to prevent ignition in oxygen systems from adiabatic compression of the gas).

Whether they are in store or in use, inlet and outlet connections must be kept free of dust

or other debris, any form of oil, grease or solvents. Contaminated units shall not be used

and shall be removed from service.

A regulator shall not be used with any gas other than that for which it is designed and

labelled. It shall be suitable for the maximum cylinder pressure being used and shall be

marked with the maximum inlet pressure and delivery pressure.

All regulators up to 20 bar working pressure shall conform to:

• BS EN ISO 2503 (23), Gas welding equipment. Pressure regulators and

pressure regulators with flow-metering devices for gas cylinders used in welding,

cutting and allied processes up to 300 bar (30 MPa); or

• BS EN ISO 7291 (26), Gas welding equipment. Pressure regulators for

manifold systems used in welding, cutting and allied processes up to 30 MPa (300

bar).

These standards state that pressure-adjusting screws shall be captive to prevent inter-

changeability between regulators.

In the case of VIPR’s they should conform to

• BS EN ISO 22435 (29), Gas cylinders. Cylinder valves with integrated

pressure regulators. Specification and type testing.

For regulators with greater than 20 bar working pressure it is recommended that the

following is clearly and permanently marked on the pressure-regulator body or cover:

12


(i) Gas service.

(ii) Maximum inlet pressure.

(iii) Maximum outlet pressure.

(iv) The name or trademark of the manufacturer and / or distributor.

Regulators for industrial use shall not be CE marked in accordance with the European

Directives.

The regulator pressure adjusting screw shall be set to the zero pressure position when the

regulator is not in use by turning the control knob fully anti-clockwise.

Damaged regulator pressure gauges, inlet or outlet connections, or threads, shall not be

used.

5.2 Hose assemblies

Hoses shall be compatible with the gas and pressure to be used. Hoses are colour coded

or marked with the gas name to prevent inadvertent use of the wrong hose. Hose

assemblies are fitted with left-hand threads for fuel gases and right-hand threads for

oxygen and inert gases. Refer to Table 2.

Hoses and hose assemblies shall conform to the following standards:

(i) BS EN 1327 (22), Gas welding equipment. Thermoplastic hoses for welding

and allied processes.

(ii) BS EN ISO 3821 (24), Gas welding equipment. Rubber hoses for welding,

cutting and allied processes.

(iii) BS EN ISO 14113 (28), Gas welding equipment. Rubber and plastics hose

and hose assemblies for use with industrial gases up to 450 bar (45 MPa).

(iv) Hoses to BS EN ISO 3821 (24) shall be assembled and tested in accordance

with BS EN 1256 (21), Gas welding equipment. Specification for hose

assemblies for equipment for welding, cutting and allied processes.

(v) Hose connections shall conform to BS EN 560 (18), Gas welding equipment.

Hose connections for equipment for welding, cutting and allied processes.

(vi) Quick action couplings shall conform to BS EN 561 (19), Gas welding

equipment. Quick-action coupling with shut-off valves for welding, cutting


The condition of the hose is of vital importance to safety. Correct hose connections,

properly fitted and tested and retained by suitable clips or ferrules, are also essential. Re-

usable worm-drive clamps shall not be used. Hoses shall be protected from heat,

mechanical damage, sparks, oil or grease. They should not be longer than is necessary.

It is recommended that where long lengths of hose are used, a permanent, piped system,

in accordance with BCGA CP 4 (30) or BCGA CP 6 (31), should be considered. Since a

13


fire in a coiled hose is difficult to extinguish, oxygen or fuel gas hoses should not be

coiled around the cylinders, regulators or cylinder trolley during operation.

Gas Hose colour Thread

Oxygen Blue Right hand

Mixed gas (Oxygen and inert) Blue Right hand

Inert gases (Compressed air,

nitrogen, argon and carbon

dioxide)

Black Right hand

Inert gas mixtures Black Right hand

LPG, methane, natural gas and

MPS

Orange Left hand

Acetylene, hydrogen2 and other

fuel gases (excludes LPG,

methane, natural gas & MPS)

Red Left hand

Mixed gas (flammable and inert) Red Left hand

Universal fuel gases (included in

this table) except fluxed fuel gases1

Red / orange Left hand

Fluxed fuel gases1

Red - Flux Left hand

NOTES:

1. Universal fuel gas hoses (colour coded red /orange) are not to

be used for fluxed fuel gas hoses.

2. The manufacturer shall be consulted on the suitability of the

hose for use with hydrogen.

Table 2: Hose assemblies – colours and threads.

If using more than one gas for your application and especially if one is a fuel gas, do not

tape hoses together. Tape can cover damage to the hose outer layer. To reduce trip

hazards hoses can be joined together by hose clips (plastic or metal) specifically designed

for that purpose. Siamese hose can be used provided that the hose and the assembly

conform to the required ISO standards. It is important to remember that failure in one

hose can lead to failure in the other and lead to a potentially more dangerous situation.

Always discard hoses when worn.

Hose connections with non-standard threads shall be tested in accordance with BS EN

1256 (21) or BS EN ISO 14113 (28).

As an alternative to hoses, small bore metallic tubing may be used for the same purpose.

14


5.3 Non-return valve

These shall conform to BS EN 730 (20), Gas Welding Equipment. Safety devices, or ISO

5175 (25), Equipment used in gas welding, cutting & allied processes. Safety devices for

fuel gases and oxygen or compressed air. General specifications, requirements and

tests, and be capable of preventing back-flow of gases at low and high pressures. Non-

return valves may be damaged by flashbacks and require periodic testing to ensure that

they will not allow reverse flow.

5.4 Flashback arrestors

Flash back arrestors shall be used in conjunction with acetylene and are advisable with

other fuel gases.

5.5 Personal Protective Equipment

Personal Protective Equipment (PPE) is to be provided as required by the Personal

Protective Equipment at Work Regulations (7). PPE may only be considered as a control

to achieve an acceptable level of residual risk after other levels of control have been

addressed. The risk assessment will determine the requirement for the use of PPE.

Where PPE is required a PPE Assessment is to be carried out. Due regard is to be given

to the requirements of the Control of Substances Hazardous to Health (COSHH)

Regulations (8), any relevant equipment publications, manufacturers information and the

product Safety Data Sheet. The PPE selected is for a particular task and location and

must be appropriate and chosen to reduce the overall risk effectively. Thus there are

different PPE requirements for differing products and different tasks.

Eye protection is essential at all times and is a legal requirement in factory premises to

provide safeguard against heat, glare and flying sparks. Safety glasses should be used

when connecting or disconnecting gas cylinders.

In certain locations, or site conditions, other additional protective clothing may be

obligatory, e.g. hard hats or ear defenders, plus breathing apparatus.

For cylinder handling the use of protective gloves is essential. Safety shoes or boots with

metatarsal protection are strongly recommended.

6. PROVISION OF SAFETY DEVICES

The following safety provisions shall be followed:

6.1 Inert gases

Inert gases, or mixtures of inert gases, do not require non-return valves or flashback

arrestors fitted in the system.

Where more than one gas is used simultaneously the use of non-return valves should be

considered.

6.2 Oxygen and flammable gases excluding acetylene

Where oxygen or flammable gases are used in a process as individual gases, the use of

non-return valves or flashback arrestors is optional.

Where oxygen is used in conjunction with a flammable gas refer to BCGA CP 7 (32).

15


6.3 Acetylene systems

Flash back arrestors shall be used in conjunction with acetylene and are advisable with

other fuel gases.

BCGA CP 6 (31) and / or BCGA CP 7 (32) should be consulted.

7. SAFETY PRECAUTIONS: WORKING AREA

7.1 General

Risk assessments should be carried out in accordance with the Management of Health

and Safety at Work Regulations (5). Some specific guidance is however given as

follows.

Where fuel gases are used the areas should be kept free of flammable and combustible

materials. Fire extinguishing equipment should be provided and made readily available

as per the fire risk assessment carried out in compliance with The Regulatory Reform

(Fire Safety) Order (10).

There are hazards from fumes in some applications, e.g. silver brazing, work on painted

or galvanised metals, etc. Staff at all levels need to be aware of the potential hazards. It

will be necessary to assess the actual risk in order to comply with the COSHH

Regulations (8). Additional advice is detailed in BCGA TIS 24 (43), Welding fumes.

Safety alert.

Where noise is excessive ear protectors may be required.

7.2 Confined spaces

Working in confined spaces is subject to the Confined Spaces Regulations (3). HSE

Leaflet 101 (15) ACOP Safe work in confined spaces, provides detailed

recommendations which should be followed whenever applicable. Refer also to HSE

INDG 258 (16), Confined spaces. A brief guide to working safely. In particular the use

of a Permit to Work, which may require a test of the atmosphere for safety and / or

continuous monitoring, is strongly recommended.

Oxygen shall not be used to freshen the air in a confined space as this will result in

enrichment of the atmosphere, presenting increased fire hazard.

Gas cylinders should not be taken into a confined space. Equipment shall not be left in a

confined space after the actual work has been completed, or at times when work has

ceased for more than a few minutes, to prevent the build up of gases from leaks.

Oxygen-deficient atmospheres are very difficult to identify. Danger areas may be highly

localised as, for instance, the bottom of a tank where heavier gases, such as process

combustion products, have collected. The operator, not aware of the hazard, may

become asphyxiated. When carrying out work in a confined space, it is essential to have

an assistant stationed outside who understands the equipment and can monitor the safe

progress of the work. The assistant must comprehend the possible hazards associated

with working in confined spaces and know the correct emergency actions required.

This subject is covered in greater depth in BCGA Guidance Note 11 (36), Reduced

oxygen atmospheres. The management of risk associated with reduced oxygen

16


atmospheres resulting from the use of gases in the workplace, which includes methods of

calculating the level of hazard.

7.3 Oxygen enrichment

The normal oxygen content of the air is 21 %. If this becomes enriched to 23.5 % there

is an increase in the speed with which materials will burn. At 30 % enrichment, the

typical characteristics of an oxygen-fed fire become apparent. Fire will spread rapidly

across combustible materials such as clothing and body hair and is extremely difficult to

extinguish. Such fires could result in death or serious injury. A spark or lit cigarette is

sufficient as a source of ignition.

Oils, greases and some solvents may react violently in oxygen enriched atmospheres and

some metals may also burn. Equipment cleanliness is essential and, to avoid possible

contamination, clothing, tools and the working area should be kept clean.

Oxygen levels greater than 23.5 % are deemed unsafe in which to work.

8. CYLINDER HANDLING AND STORAGE

It is essential that proper training and instruction is given to all staff who are involved in

cylinder handling and storage.

Many accidents are caused by cylinder mishandling and unsafe storage. The destructive

potential arising from the uncontrolled release of gas from a high pressure cylinder can be

considerable. BCGA TIS 15 (38), Model risk assessment for the storage and use of oxy-

acetylene cylinders, can be used to assist in developing a site risk assessment.

8.1 Cylinder handling

The Manual Handling Operations Regulations (2) require first that an assessment of

manual handling operations is conducted. Following the assessments, training should take

place. Where the assessment indicates that the work exceeds guideline limits, wherever

practicable the operation should be mechanised or handling aids provided. BCGA

Guidance Note 3 (35) Safe cylinder handling and the application of the manual handling

operations regulations to gas cylinders, defines the principles of safe practice for

handling and moving cylinders and provides a basic understanding of the Manual

Handling Operations Regulations (2) relating to gas cylinders. BCGA TIS 17 (39),

Model risk assessment for manual handling activities in the industrial gas industry, can

be used to assist in developing a site risk assessment.

The following points are of note:

(i) Purpose designed trolleys should be used for moving cylinders wherever

practicable.

(ii) Do not lift cylinders by using the valve protection device unless they have

been designed for that purpose. Do not use ropes, chains or slings to suspend

cylinders unless the supplier has installed appropriate lifting attachments

such as lugs. Suitable cradles, platforms or pallets to hold the cylinders may

be used for lifting. Refer to EIGA SI 25 (46), Crane transport of cylinder

packages.

17


(iii) For moving over even floors and only for short distances the familiar

‘churning’ method may be used. Gloves and foot protection shall be used.

(iv) Cylinders shall not be rolled along the ground since this may damage or even

open the valve and will also damage identifying marks and symbols.

(v) Cylinders shall not be moved with the valve open.

(vi) Cylinders shall not be transported with the regulators and hoses attached,

unless on a purpose designed trolley or carrier.

(vii) Cylinders shall not be used as work-supports or rollers.

8.2 Cylinder storage

BCGA Guidance Note 2 (34), Guidance for the storage of gas cylinders in the

workplace, defines the principles of safe practice for the storage of gases in cylinders and

cylinder bundles. UKLPG provide additional information on the storage of LPG

cylinders, refer to UKLPG CP 7 (45), Storage of full and empty LPG cylinders and

cartridges.

The following points are of note:

(i) Always store cylinders in a secure location, in a vertical position, properly

restrained to avoid them falling over.

(ii) Always store cylinders in an area with good ventilation.

(i) Always store cylinders away from sources of ignition or combustible

material.

(ii) Cylinders shall not be exposed to heat. Take care to prevent the heating of

cylinders from the process or any other external heat source.

(iii) Cylinder valves on empty cylinders shall be closed to prevent the ingress of

moisture or other contaminants.

9. PREPARATION FOR USE

9.1 Location of cylinders

It is essential to locate the cylinders in a safe place relative to the work about to be

carried out. Cylinders shall be restrained to avoid toppling and be protected from

mechanical damage.

The number of cylinders in a workroom should be kept to a minimum.

9.2 Cylinders

The primary method for identifying the gas contents of a cylinder is the label. If the label

is defaced or missing the cylinder is not to be used and is to be returned to the gas

supplier. Prior to use check the cylinder label and confirm that it is the gas you require.

If you are unfamiliar with the hazards and properties of the gas read and follow the

guidance on the safety data sheet. If required, seek further advice from your gas supplier.

18


Should there be any visible trace of oil or grease on an oxygen cylinder valve, the

cylinder shall be put aside for return to the supplier. Contaminated cylinders shall be

suitably marked to prevent accidental re-issue.

Before assembling regulators and fittings ensure that the cylinder valve outlet is clean,

dry, and free from damage and dirt. For further guidance contact your gas supplier and

refer to BCGA TIS 22 (42).

9.3 Regulators

Before attaching a regulator to a cylinder, check:

(i) The regulator is within its expiry date. All regulators have a life, on expiry of

which they require either replacement or refurbishment. See Table 1.

(ii) That the gas inside the cylinder is correctly identified and that the regulator is

suitable for that specific gas;

(iii) The maximum cylinder pressure;

(iv) That the regulator is suitable for the maximum cylinder pressure (regulator

inlet pressure);

(v) The regulator has a suitable outlet pressure for the application;

(vi) That the regulator is in a serviceable condition;

(vii) The gauges are not damaged nor show signs of over pressurisation;

(viii) That the cylinder valve outlet thread is mechanically compatible with the

regulator inlet connection and is clean and free of dirt (use a lint free cloth to

clean the outlet). Refer to BCGA TIS 22 (42);

(ix) That the regulator outlet thread is in good condition;

(x) That the regulator has the manufacturers/suppliers name clearly visible;

(xi) The regulator can be fitted at a suitable orientation;

(xii) The regulator pressure – adjusting screw is set to zero pressure position by

turning the control knob fully anti-clockwise;

(xiii) Use the correct sized spanner only.

BCGA TIS 18 (40), Gas equipment inspection / replacement date marking, provides

information on some of the equipment marking schemes used by manufacturers.

To prevent ignition of components, oxygen regulators shall be kept free from oil or

grease and be suitable for the maximum cylinder pressure being used. The oxygen

cylinder valve shall be opened slowly.

19


Inspect the inlet connection for damage. If an ‘O’ ring is fitted to the inlet, check for

damage and replace, if necessary, with an ‘O’ ring recommended by the regulator

manufacturer.

NOTE: Do not use any form of jointing paste or tape between the regulator and cylinder

valve.

9.4 Safety devices

When fitting safety devices to hose assemblies, ensure that all threads and seats are in

good condition. Fit the device in accordance with supplier’s instructions, taking

particular care of the correct direction of flow.

9.5 Hoses

Before fitting a hose to the safety device or regulator, examine all fittings, threads,

connection seatings and clips. Also, check for signs of damage. Reject any hose/ hose

assemblies that show signs of any damage or whose condition is in any way

unsatisfactory.

9.6 Pressurising the system

(i) Ensure that all regulators and downstream valves are closed.

(ii) Slowly open the cylinder valve fully and then close a quarter of a turn to

enable others to distinguish readily between an open and a closed valve.

(iii) Where the valve is not fitted with a hand-wheel, use only the gas supplier’s

recommended cylinder key and ensure that once the valve is open, the

cylinder key is left fitted to the valve.

(iv) Adjust the regulator to give the required gas pressure and check the

equipment for leaks using a suitable leak detection fluid. Adjust flowing gas

pressure to the required level.

NOTE: Only use leak detection fluids that are free of ammonia.

(v) The system should be purged to establish that the correct gas is present in the

system. Care should be taken when purging flammable gases to prevent the

possible creation of a flammable atmosphere.

10. CLOSING-DOWN PROCEDURE

(i) Close down the process equipment according to the manufacturer’s instructions.

(ii) Close the cylinder valve.

(iii) Vent away the small amount of residual gas via the process equipment.

(iv) Turn the regulator pressure adjusting screw to the zero delivery position (by

turning anti-clockwise).

(v) Close the flow-meter valve if fitted.

20


After use, the following additional operations should be carried out:

(vi) Remove the regulators from the cylinder.

(vii) Visually inspect the equipment for damage.

(viii) Return equipment and cylinders to a safe place of storage, reporting any damage at

the same time.

(ix) Make a final check to ensure that the cylinder valves are closed and that there is no

leakage of gas.

(x) Equipment should be removed from confined spaces, whenever it is left

unattended, to prevent the build-up of gas.

11. EMERGENCY PROCEDURE: CYLINDERS

The user should have a site-specific emergency procedure in place for fire situations in

compliance with The Regulatory Reform (Fire Safety) Order (10).

BCGA Leaflet 6 (44), Cylinders in fires, provides further guidance on dealing with gas

cylinders involved in a fire.

Correct location of cylinders, correct assembly of equipment and correct operation will all

contribute to minimising the risk of an incident involving gas cylinders.

The operator should ensure that fire extinguishers are readily available at all times when

oxygen or flammable gas is in use.

The most common incidents to occur are ignition of leakages of fuel gas from hose connections

or defective hoses. If this occurs:

(i) The cylinder valve should be closed and the fire extinguished as quickly as

possible, if safe to do so.

(ii) If this action is not possible, the fire may be first extinguished by prompt use of a

dry powder or CO2 fire extinguisher, followed by the closing of the cylinder valve

to avoid re-ignition.

If it is not possible to extinguish the fire with the use of an extinguisher, further attempts

should not be made. Evacuate the area, if this has not already been done, because of the danger

of explosion.

As soon as a fire occurs either the works’ fire brigade or the Fire and Rescue Service should be

alerted, even if attempts are being made to handle the situation and it has been dealt with by the

time the emergency service arrives.

11.1 Key actions for dealing with gas cylinders in the event of fire:

• KEEP AWAY, do NOT approach or attempt to move the cylinder or open the

valve.

21


• Sound the alarm.

• Evacuate the area.

• Contact the Fire and Rescue Service.

If gas cylinders are directly involved in a fire, keep well clear until the Fire and Rescue

Service arrive and then follow their instructions.

Inform the Fire and Rescue Service immediately of the location and type of any gas

cylinders involved in the fire. Also tell them the location and type of other gas cylinders

on the premises.

Cylinders which are not directly involved in the fire and which have not become heated,

should be moved as quickly as possible to a safe place, provided that this can be done

without undue risk. Make sure that cylinder valves are closed.

11.2 Fire damaged gas cylinders

Do not use any fire-damaged cylinders. Quarantine any fire-damaged cylinders in a safe

place. Mark or label fire-damaged cylinders to clearly show that they have been in a fire.

Inform your gas supplier whenever a cylinder is involved in a fire. After the fire is out

and the area has been declared safe by the Fire and Rescue Service, the gas supplier will

arrange collection of fire damaged cylinders at a convenient date.

Contact numbers for the gas supplier are available on the product Safety Data Sheet.

Refer also to BCGA Leaflet 6 (44).

22


12. REFERENCES *

Document Number Title

1. The Health and Safety at Work etc. Act 1974.

2. SI 1992: No. 2793 Manual Handling Operations Regulations 1992.

3. SI 1997: No. 1713 The Confined Spaces Regulations 1997.

4. SI 1998: No. 2306 The Provision and Use of Work Equipment Regulations 1998

(PUWER).

5. SI 1999: No. 3242 The Management of Health and Safety at Work Regulations

1999.

6. SI 2000: No. 128 The Pressure Systems Safety Regulations 2000 (PSSR).

7. SI 2002: No. 1144 Personal Protective Equipment at Work Regulations 2002.

8. SI 2002: No. 2677 The Control of Substances Hazardous to Health Regulations

2002 (COSHH).

9. SI 2002: No. 2776 The Dangerous Substances and Explosive Atmospheres

Regulations 2002 (DSEAR)

10. SI 2005: No. 1541 The Regulatory Reform (Fire Safety) Order 2005.

11. SI 2009: No. 716 The Chemicals (Hazard Information and Packaging for

Supply) Regulations 2009. (CHIP 4) (as amended).

12. SI 2009: No. 1348 The Carriage of Dangerous Goods and the Use of

Transportable Pressure Equipment Regulations 2009 (as

amended).

13 EC Regulation

No 1272/2008

Classification, Labelling and Packaging of Substances and

Mixtures (CLP).

14. EC Regulation

No 1907/2006

Registration, Evaluation, Authorisation and restriction of

CHemicals (REACH).

15. HSE Leaflet 101 Safe work in confined spaces. Confined Space Regulations

1997. Approved Code of Practice, regulations and guidance.

16. HSE INDG 258 Confined spaces. A brief guide to working safely.

17. HSE EH 40 Workplace Exposure Limits.

18. BS EN 560 Gas welding equipment. Hose connections for equipment for

welding, cutting and allied processes.

19. BS EN 561 Gas welding equipment. Quick-action coupling with shut-off

valves for welding, cutting and allied processes.

23



20. BS EN 730 Gas Welding Equipment: Safety devices:

Part 1 - Incorporating a flame (flashback) arrestor.

Part 2 - Not incorporating a flame (flashback) arrestor.

21. BS EN 1256 Gas welding equipment: Specification for hose assemblies

for equipment for welding, cutting and allied processes.

22. BS EN 1327 Gas welding equipment. Thermoplastic hoses for welding


23. BS EN ISO 2503 Gas welding equipment. Pressure regulators and pressure

regulators with flow-metering devices for gas cylinders used

in welding, cutting and allied processes up to 300 bar (30

MPa).

24. BS EN ISO 3821 Gas welding equipment. Rubber hoses for welding, cutting


25. ISO 5175 Equipment used in gas welding, cutting & allied processes.

Safety devices for fuel gases and oxygen or compressed air.

General specifications, requirements and tests.

26. BS EN ISO 7291 Gas welding equipment. Pressure regulators for manifold

systems used in welding, cutting and allied processes up to

30 MPa (300 bar).

27. BS EN ISO 11114

Part 1.

Part 2.

Transportable gas cylinders. Compatibility of cylinder &

valve materials with gas contents:

Part 1, Metallic materials.

Part 2, Non-metallic materials.

28. BS EN ISO 14113 Gas welding equipment. Rubber and plastics hose and hose

assemblies for use with industrial gases up to 450 bar (45

MPa).

29. BS EN ISO 22435 Gas Cylinders. Cylinder valves with integrated pressure

regulators. Specification and type testing.

30. BCGA Code of

Practice 4

Industrial gas cylinder manifolds and distribution pipework

(excluding acetylene).

31. BCGA Code of

Practice 6

The safe distribution of acetylene in the pressure range 0 -

1.5 bar (0 – 22 lbf/in2).

32. BCGA Code of

Practice 7

The safe use of oxy-fuel gas equipment (individual portable

or mobile cylinder supply).

33. BCGA Code of

Practice 18

The safe storage, handling and use of special gases in the

micro-electronics and other industries.

34. BCGA Guidance

Note 2

Guidance for the storage of gas cylinders in the workplace.

24



35. BCGA Guidance

Note 3

Safe cylinder handling and the application of the manual

handling operations regulations to gas cylinders.

36. BCGA Guidance

Note 11

Reduced oxygen atmospheres. The management of risk

associated with reduced oxygen atmospheres resulting from

the use of gases in the workplace.

37. BCGA Guidance

Note 13

DSEAR Risk Assessment.

38. BCGA Technical

Information Sheet 15

Model risk assessment for the storage and use of oxy-

acetylene cylinders.

39. BCGA Technical


Model risk assessment for manual handling activities in the

industrial gas industry.

40. BCGA Technical


Gas equipment inspection / replacement date marking.

41. BCGA Technical


Refurbishment of handheld blowpipes and regulators used

with compressed gases for welding, cutting and related

processes.

42. BCGA Technical


BCGA policy on connecting gas cylinders.

43. BCGA Technical


Welding fumes. Safety alert.

44. BCGA Leaflet 6 Cylinders in fires.

45. UKLPG Code of

Practice 7

Storage of full and empty LPG cylinders and cartridges.

46. EIGA Safety

Information 25

Crane transport of cylinder packages.

Further information can be obtained from:

Health and Safety Executive

www.hse.gov.uk

UK Legislation

www.legislation.gov.uk

British Standards Institute (BSI)

www.bsigroup.co.uk

International Organization for Standardization (ISO)

www.iso.org

European Industrial Gases Association (EIGA)

www.eiga.eu

British Compressed Gases Association (BCGA)

www.bcga.co.uk

The UK LPG trade association (UKLPG) www.uklpg.org

British Compressed Gases Association

www.bcga.co.uk

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