UN/CETDG/20/INF.18

COMMITTEE OF EXPERTS ON THE

TRANSPORT OF DANGEROUS GOODS

(Twentieth session,

Geneva, 7-16 December l998,

agenda item 5(b))

PROGRAMME OF WORK

Programme of work for the 1999/2000 biennium and related proposals

Provisions for Gas Cylinders

Transmitted by the Expert from Canada

Proposal

It is the opinion of the expert from Canada that the development of the provisions for gas cylinders, for which paragraph 6.2.1 of Chapter 6.2 "Requirements for the Construction and Testing of Receptacles for Gases" is currently reserved, be included in the programme of work for the 1999/2000 biennium.

Background

1.	As noted in ST/SG/AC.10/C.3/30, paragraph 15, the expert from the United States of America has proposed that the Committee's programme of work for the 1999/2000 biennium should include provisions for gas cylinders, in light of ISO's work on standardisation.

2.	Under ISO Technical Committee 58, Gas Cylinders, (ISO/TC58), numerous International Standards have been published with respect to technical requirements for gas cylinders. These standards include requirements for the design, construction, testing, operation, and fittings of gas cylinders. (See Attachment A.)

3.	Under ISO/TC58, numerous draft documents pertaining to technical requirements for gas cylinders are near publication as International Standards. These documents address requirements for the design, construction, testing, operation, and fittings of gas cylinders. (See Attachment B.) Three notable draft standards, 9809-1 and 9809-2 pertaining to the construction of seamless steel cylinders and 7866 pertaining to the construction of seamless aluminum cylinders, are approaching the final stages.

4.	These technical International Standards should be considered for reference by the Recommendations on the Transport of Dangerous Goods Model Regulations.

5.	Under ISO/TC58, a document entitled ISO/CD 14600, "Basic Rules for an International Quality Acceptance System for ISO Gas Cylinders", is being developed to accompany the technical construction standards. This document addresses the inspection, quality assurance, and certification requirements for the manufacture of gas cylinders.

Once published, this standard will provide a framework for the harmonisation of inspection and quality assurance requirements and a basis for the worldwide recognition of cylinders manufactured in accordance with these ISO Standards.

It is anticipated that this document will be published as an International Standard towards the end of the next biennium. At that time, it should also be considered for reference by the Recommendations on the Transport of Dangerous Goods Model Regulations.

ATTACHMENT A

STANDARDS AND TECHNICAL REPORTS PUBLISHED

ISO/TC58 Gas cylinders

ISO 32:1977	Gas cylinders for medical use – Marking for identification

ISO 3500:1990	Seamless steel CO2 cylinders for fixed fire-fighting installations on ships

ISO 3807:1977	Dissolved acetylene cylinders – Basic requirements

ISO 7225:1994	Precautionary labels for gas cylinders (corrected and reprinted 1995)

ISO 10286:1996	Gas cylinders – Terminology

ISO 11114-1:1997	Transportable gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 1: Metallic materials

ISO 11114-3:1997	Transportable gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 3: Autogenous ignition test in oxygen atmosphere

ISO/TC58/SC2 Gas cylinders – Cylinder fittings

ISO 407:1991	Small medical gas cylinders – Pin-index yoke-type valve connections

ISO 5145:1990	Cylinder valve outlets for gases and gas mixtures – Selection and dimensioning

ISO/TR 7470:1988	Valve outlets for gas cylinders – List of provisions which are either standardized or in use

ISO 10156:1996	Gases and gas mixtures – Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets

ISO 10298:1995	Determination of toxicity of a gas or gas mixture

ISO 10920:1997	Transportable gas cylinders – 25E taper thread for connection of valves – Specification

ISO 11117:1998	Gas cylinders – Valve protection caps and valve guards for industrial and medical gas cylinders – Design, construction, and tests

ISO 11191:1997	Gas cylinders – 25E taper thread for connection of valves to gas cylinders – Inspection gauges

ISO 13338:1995	Determination of tissue corrosiveness of a gas or gas mixture

ISO 13341:1997	Transportable gas cylinders – Fitting of valves to gas cylinders

ISO/TC58/SC3 Gas cylinders – Cylinder design

ISO 4705:1983	Refillable seamless steel gas cylinders

ISO 4706:1989	Refillable welded steel gas cylinders

ISO/TR 13763:1994	Safety and performance criteria for seamless gas cylinders

ISO/TC58/SC4 Gas cylinders – Operational requirements for gas cylinders

ISO 6406:1992	Periodic inspection and testing of seamless steel gas cylinders

ISO 10460:1993	Welded carbon steel gas cylinders – Periodic inspection and testing

ISO 10461:1993	Seamless aluminum-alloy gas cylinders – Periodic inspection and testing

ISO 10462:1994	Cylinders for dissolved acetylene – Periodic inspection and maintenance (corrected and reprinted 1995)

ISO 10463:1993	Cylinders for permanent gases – Inspection at time of filling

ISO 11113:1995	Cylinders for liquefied gases (excluding acetylene and LPG) – Inspection at time of filling

ISO 11372:1995	Cylinders for dissolved acetylene – Inspection at time of filling

ISO 11621:1997	Gas cylinders – Procedures for change of gas service

ISO 11625:1998	Gas cylinders – Safe handling

ISO 11755:1996	Cylinders in bundles for permanent and liquefiable gases (excluding acetylene) – Inspection at time of filling

ISO 13770:1997	Aluminum alloy gas cylinders – Operational requirements for avoidance of neck and shoulder cracks

ATTACHMENT B

DRAFT DOCUMENTS

ISO/TC58 Gas cylinders

ISO/DIS 3807-1	Dissolved acetylene cylinders – Basic requirements – Part 1: Cylinders without fusible plugs

ISO/DIS 3807-2	Dissolved acetylene cylinders – Basic requirements – Part 2: Cylinders with fusible plugs

ISO/DIS 11114-2	Transportable gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 2: Non-metallic materials

ISO/NP 11114-4	Transportable gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement

ISO/CD 14600	Transportable gas cylinders – International quality assurance system

ISO/TC58/SC2 Gas cylinders – Cylinder fittings

ISO/FDIS 10297	Gas cylinder valves – Specifications and type testing (all gases except LPG)

ISO/CD 10692-1	Connections for gas cylinder valves for ultra-high integrity service – Part 1: Outlet connections

ISO/WD 10692-2	Connections for gas cylinder valves for ultra-high integrity service – Part 2: Inlet connections

ISO/DIS 11116-1	Gas cylinders – 17E taper thread for connection of valves to gas cylinders – Part 1: Specifications

ISO/DIS 11116-2	Gas cylinders – 17E taper thread for connection of valves to gas cylinders – Part 2: Inspection gauges

ISO/DIS 12209-1	Outlet connections for gas cylinder valves for compressed breathable air – Part 1: Yoke type connections

ISO/DIS 12209-2	Outlet connections for gas cylinder valves for compressed breathable air – Part 2: Threaded connections

ISO/DIS 12209-3	Outlet connections for gas cylinder valves for compressed breathable air – Part 3: Adaptor for 232 bar valves

ISO/WD 13339	Procedure for the determination of the oxipotential of oxidizing gases and gas mixtures including toxic and corrosive gases

ISO/DIS 13340	Valves for non-refillable gas cylinders

ISO/NP 14245	Specification and testing for liquefied petroleum as (LPG) valves

ISO/DIS 14246	Transportable gas cylinders – Gas cylinder valves – Manufacturing tests and inspections

ISO/NP 15245	Gas cylinders – Parallel threads – Specifications

ISO/NP 15246	Gas cylinders – Parallel threads – Gauging

ISO/NP XXXXX	Specifications and testing for manually operated liquefied petroleum gas valves

ISO/NP YYYYY	Performance and type testing of residual pressure valves and their filling adaptors

ISO/TC58/SC3 Gas cylinders – Cylinder design

ISO/DIS 7866	Refillable transportable seamless aluminum alloy gas cylinders for world-wide usage – Design, manufacture, and acceptance

ISO/DIS 9809-1	Transportable seamless steel gas cylinders – Design, construction, and testing – Part 1: Quenched and tempered steel cylinders with tensile strength less than 1100 MPa

ISO/DIS 9809-2	Transportable seamless steel gas cylinders – Design, construction, and testing – Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1100 MPa

ISO/NP 9809-3	Transportable seamless steel gas cylinders – Design, construction, and testing – Part 3: Normalized steel cylinders

ISO/DIS 11118	Non-refillable gas cylinders – Specifications and test methods

ISO/CD 11119-1	Gas cylinders of composite material – Specifications and test methods – Part 1: Hoop wrapped, metallic liner

ISO/CD 11119-2	Gas cylinders of composite material – Specifications and test methods – Part 2: Fully wrapped, metallic liner

ISO/CD 11119-3	Gas cylinders of composite material – Specifications and test methods – Part 3: Fully wrapped, nonmetallic liner

ISO/DIS 11120	Gas cylinders- Refillable seamless steel gas cylinders, capacity between 150 L and 3000 L – Design and testing

ISO/DIS 11439	High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles

ISO/WD 12391	Seamless steel gas cylinders – Toughness and acceptance levels of steels of strength levels above 1100 N/mm2

ISO/TC58/SC4 Gas cylinders – Operational requirements for gas cylinders

ISO/DIS 10464	Liquefied petroleum gas cylinders – Periodic inspection and testing

ISO/DIS 10691	Cylinders for liquefied petroleum gas – Inspection at the time of filling

ISO/CD 11622	Filling ratios, filling pressures, and provisions for safety devices for gas cylinders

ISO/DIS 11623	Composite gas cylinders – Periodic inspection and testing

ISO/CD 13769	Gas cylinders – Stamp marking