ISO 10691-2004 PDF

Full title and description

ISO 10691:2004 — Gas cylinders — Refillable welded steel cylinders for liquified petroleum gas (LPG) — Procedures for checking before, during and after filling. This International Standard defines the inspection and operational checks to be carried out on transportable refillable welded steel LPG cylinders at the filling point to ensure safe filling, handling and immediate post-fill condition.

Abstract

ISO 10691:2004 specifies the procedures to be adopted when checking transportable refillable welded steel LPG cylinders before, during and after filling. It covers visual and functional checks appropriate to cylinders of water capacity from 0.5 L up to and including 150 L and excludes permanently vehicle-installed cylinders and filling plant/equipment. The standard is intended to reduce hazards associated with incorrect filling, leakage and unserviceable cylinders being returned to service.

General information

• Status: Published — International Standard (confirmed).
• Publication date: 24 August 2004 (Edition 1 — 2004); last reviewed and confirmed 4 November 2024.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.020.35 (Gas cylinders).
• Edition / version: Edition 1 (2004) — ISO 10691:2004.
• Number of pages: 7.

Scope

Applies to transportable refillable welded steel LPG cylinders of water capacity from 0.5 L up to and including 150 L. Specifies inspection and checking procedures to be carried out before filling (pre-fill checks), during filling (operational monitoring) and after filling (post-fill checks). Does not apply to cylinders permanently installed in vehicles, nor to the design of filling plant or bulk filling equipment.

Key topics and requirements

• Pre-fill checks: verify cylinder identity and markings, check for visible defects (dents, corrosion, excessive wear), check expiry/inspection/periodic-test markings, ensure valve and protective devices are correct and functional.
• Valve and connection checks: confirm correct valve type and handwheel/closure operation; ensure fitting cleanliness and compatibility before connection to filling equipment.
• During-filling monitoring: control filling rate and method, monitor for abnormal pressures, observe for leaks or liquid/vapour escape, ensure filling limits (mass/volume) are not exceeded.
• Post-fill actions: close and secure valves, check for leaks after filling, verify filled mass/weight or indicated fill level, replace protective caps/guards, apply or check required labelling/marking and documentation of fill.
• Exclusion criteria and rejection: criteria for rejecting cylinders from filling (severe corrosion, defective valves, failed periodic inspection, missing identification) and procedures for safe segregation and return for repair or scrapping.
• Records and traceability: maintain basic filling and inspection records to support traceability and safety oversight.

Typical use and users

Used by cylinder filling stations, LPG distributors, cylinder handling and logistics personnel, plant safety managers, quality and compliance inspectors, and regulatory authorities. Also referenced by manufacturers, maintenance workshops and training organizations to establish safe, repeatable filling procedures at point-of-fill.

Related standards

Standards commonly referenced alongside ISO 10691 include ISO 22991 (design and construction of transportable refillable welded steel LPG cylinders), ISO 10464 (periodic inspection and testing for LPG cylinders), ISO 4706 (test pressure requirements for refillable welded steel cylinders), ISO 24431 (inspection at time of filling for various cylinder types) and valve specifications such as ISO 14245 and ISO 15995 (LPG cylinder valve requirements and testing). National and regional equivalents (EN/BS/AS/NZ adoptions) may also apply in specific jurisdictions.

Keywords

LPG, gas cylinders, refillable, welded steel, filling procedures, inspection, pre-fill check, post-fill check, cylinder safety, valve check, leak test, traceability.

FAQ

Q: What is this standard?

A: ISO 10691:2004 is an International Standard from ISO that specifies procedures for checking refillable welded steel LPG cylinders before, during and after filling at the point of fill.

Q: What does it cover?

A: It covers inspection and operational checks for transportable refillable welded steel LPG cylinders with a water capacity of 0.5 L up to and including 150 L, including pre-fill visual checks, valve/connection verification, monitoring during filling, and post-fill checks and leak testing. It excludes permanently vehicle-installed cylinders and filling plant design.

Q: Who typically uses it?

A: LPG filling station operators, cylinder distributors, plant safety and quality personnel, compliance inspectors, and organizations that handle, refill or maintain LPG cylinders use this standard to define safe filling practices.

Q: Is it current or superseded?

A: The published edition is ISO 10691:2004 (Edition 1). The standard was last reviewed and confirmed by ISO on 4 November 2024 and therefore remains current in that confirmed form.

Q: Is it part of a series?

A: Yes. ISO 10691 is part of a family of ISO standards addressing refillable LPG cylinders and related equipment and activities (design and construction, periodic inspection and testing, valve specifications, test pressures, and inspection-at-fill standards). Examples include ISO 22991, ISO 10464, ISO 4706, ISO 14245 and ISO 15995.

Q: What are the key keywords?

A: LPG, gas cylinder, refillable cylinder, welded steel, filling procedures, inspection, valve, leak test, safety, point-of-fill.