ISO 19078-2013 PDF

Full title and description

St ISO 19078-2013 — Gas cylinders — Inspection of the cylinder installation, and requalification of high-pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles. This standard specifies inspection, installation and requalification requirements and acceptance/rejection criteria for high-pressure CNG cylinders and their installations when designed and manufactured in accordance with ISO 11439.

Abstract

ISO 19078:2013 provides requirements and guidance for inspecting cylinder installations and for requalifying high-pressure cylinders used for on-board storage of compressed natural gas (CNG) in automotive vehicles. It gives criteria for acceptance, allowed rework or rejection (including destruction) of cylinders and their mounting/installation where manufacturer guidance is not available. The standard is intended to support safe in-service inspection, periodic requalification and disposition decisions for CNG vehicle cylinders.

General information

• Status: Published (Edition 2, confirmed at review).
• Publication date: January 2013 (ISO 19078:2013, Edition 2).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.020.35 (Gas cylinders) / 43.060.40 (Fuel systems).
• Edition / version: Edition 2 (2013).
• Number of pages: 31 pages.

Scope

This standard applies to the inspection, installation and requalification of high-pressure cylinders designed and manufactured in accordance with ISO 11439 for the on-board storage of natural gas as a fuel for automotive vehicles. It covers visual, functional and pressure-related inspection criteria, provides acceptance and rejection criteria (and permitted rework where applicable), and addresses documentation, marking and safety considerations for cylinder mounting and associated fittings. It does not replace manufacturer-specific instructions where these exist and does not cover external loadings arising from collisions beyond the intended service conditions.

Key topics and requirements

• Inspection procedures for cylinder installations on vehicles (visual, dimensional and functional checks).
• Requalification methods and intervals for in-service high-pressure CNG cylinders.
• Acceptance, rework and rejection criteria for cylinders and installations when manufacturer guidance is absent.
• Requirements for marking, documentation and traceability of cylinders and requalification records.
• Non‑destructive examination and pressure testing guidance where applicable.
• Mounting, restraint and compatibility checks for cylinder fittings, valves and associated hardware.
• Safety precautions and disposition procedures for damaged or out-of-tolerance cylinders.

Typical use and users

ISO 19078:2013 is used by vehicle manufacturers, CNG conversion and retrofit shops, inspection and testing laboratories, maintenance and fleet operators, regulatory authorities, type-approval bodies and third‑party inspectors. It is referenced by organizations responsible for periodic safety inspections, requalification and disposition decisions for on-board CNG cylinders and their installations.

Related standards

Standards commonly used alongside ISO 19078:2013 include ISO 11439 (high-pressure cylinders for on‑board CNG storage), the ISO 15500 series and ISO 15501/ISO 14469 family (CNG fuel system and refuelling connector requirements), and regional vehicle/component regulations such as UNECE Regulation No. 110 (ECE R110) for CNG vehicle component approval. Other related documents cover CNG fuelling stations and component test methods.

Keywords

CNG, compressed natural gas, gas cylinders, requalification, inspection, cylinder installation, ISO 19078, ISO 11439, vehicle fuel systems, cylinder acceptance criteria, periodic inspection, pressure testing, marking, traceability.

FAQ

Q: What is this standard?

A: ISO 19078:2013 is an international standard that specifies inspection, installation and requalification requirements for high-pressure cylinders used for on-board storage of compressed natural gas in vehicles.

Q: What does it cover?

A: It covers inspection procedures, acceptance/rejection criteria, permitted rework, documentation and marking, requalification methods and safety considerations for cylinders designed to ISO 11439 and installed on vehicles. It offers guidance where manufacturer instructions are not available.

Q: Who typically uses it?

A: Vehicle manufacturers, CNG conversion and maintenance workshops, inspection bodies, regulators, fleet operators and testing laboratories use this standard to ensure safe installation, inspection and requalification of on-board CNG cylinders.

Q: Is it current or superseded?

A: ISO 19078:2013 (Edition 2) is the published edition from January 2013 and has been subject to periodic review. It remains the published standard; however, revisions or replacement documents (committee drafts or DIS projects) may be under development — users should check with their national standards body or the publisher for the most recent status before relying on it for formal compliance decisions.

Q: Is it part of a series?

A: Yes. ISO 19078 is part of the broader suite of standards addressing CNG vehicle safety and components and is closely linked with ISO 11439 (cylinder design). It is used together with standards for fuel system components (ISO 15500 series), refuelling connectors (ISO 14469), CNG system safety (ISO 15501) and regional vehicle component regulations such as UNECE R110.

Q: What are the key keywords?

A: CNG, gas cylinder inspection, requalification, on‑board storage, ISO 11439, cylinder acceptance criteria, vehicle fuel systems, pressure test, non‑destructive examination.