ISO 25760-2009 PDF

Full title and description

ISO 25760:2009 — Gas cylinders — Operational procedures for the safe removal of valves from gas cylinders. This International Standard specifies recommended operational procedures, precautions and basic techniques to remove valves from gas cylinders safely, and to identify valves that are inoperable or unsafe to remove.

Abstract

ISO 25760:2009 provides practical, safety-focused guidance for the removal of cylinder valves. It addresses hazards arising from gases and gas mixtures under pressure and describes preparatory checks, isolation and depressurization, personal protective equipment, safe removal steps, identification of inoperable valves, and basic documentation/marking recommendations. The standard explicitly excludes specialized techniques and equipment used to remove valves from low-pressure cylinders while still under pressure (for example some LPG procedures).

General information

• Status: Published (confirmed current following ISO periodic review)
• Publication date: 8 June 2009
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 23.020.35
• Edition / version: Edition 1 (2009)
• Number of pages: 18

Scope

The standard applies to operational activities associated with removal of valves from gas cylinders and is intended for suppliers, testing and maintenance operators, and any person authorised to remove valves. It deals only with hazards related to gases and gas mixtures under pressure; it does not cover other technical aspects of valve removal or specialized in‑service removal techniques used for certain low‑pressure cylinders (for example some LPG operations still under pressure). The emphasis is on worker safety, prevention of uncontrolled release, and procedures for identifying valves that should not be removed until further inspection or special equipment is available.

Key topics and requirements

• Preparatory checks (cylinder identification, contents verification and inspection of valve condition)
• Risk assessment and isolation procedures before any valve work
• Controlled depressurization and venting procedures
• Personal protective equipment (PPE) and safe working distances
• Techniques for physically removing valves and handling seized or inoperable valves
• Identification and marking of cylinders with defects or unsafe valves
• Requirements for documentation, record keeping and transfer of responsibility
• Exclusions and limitations (specialized equipment/procedures for some low‑pressure cylinders are not covered)

Typical use and users

Used by gas suppliers, cylinder filling and testing facilities, maintenance technicians, occupational health and safety professionals, emergency responders, and regulators. It is applied in operational procedures, training materials, workplace safety programmes, and maintenance instructions where safe valve removal from gas cylinders is required.

Related standards

Related documents are other ISO and national standards produced by ISO/TC 58/SC 4 and associated committees covering cylinder design, testing, filling, valve specifications and material compatibility. Users often consult ISO product and safety standards on gas cylinders together with locally mandated regulations and gas‑industry guidance when developing procedures.

Keywords

gas cylinders; cylinder valves; valve removal; depressurization; safety procedures; inoperable valves; cylinder maintenance; ISO 25760

FAQ

Q: What is this standard?

A: ISO 25760:2009 is an International Standard that sets out operational procedures and safety guidance for the removal of valves from gas cylinders.

Q: What does it cover?

A: It covers preparatory checks, isolation and controlled depressurization, safe removal techniques, PPE, identification of inoperable valves, and recommended documentation and marking. It addresses hazards due to gases and gas mixtures under pressure but excludes specialized valve‑removal techniques used for some low‑pressure cylinders (e.g., certain LPG procedures).

Q: Who typically uses it?

A: Cylinder suppliers, testing and maintenance operators, safety officers, technicians authorised to perform valve removal, emergency responders, and regulators use the standard to develop safe working procedures and training.

Q: Is it current or superseded?

A: ISO 25760:2009 was published in June 2009 and has been subject to ISO systematic reviews; the publication was confirmed as current in ISO’s review cycle (latest confirmation recorded in 2024), so this edition remains the active version of the standard.

Q: Is it part of a series?

A: It is not a numerical series in itself but it is related to other ISO standards and technical specifications produced by ISO/TC 58 (Gas cylinders) and its subcommittees that cover cylinder design, testing, valves and compatibility.

Q: What are the key keywords?

A: Key keywords include gas cylinders, valve removal, depressurization, valve safety, inoperable valves, cylinder maintenance, operational procedures, and ISO 25760.