1. SCOPE

This standard deals with seamless steel gas cylinder (single or those from bundles) intended for storage of compressed and liquefiable gases under pressure, of water capacity from 0.5 l up to and including 3 000 l. It also applies, as far as practicable, to cylinders of less than 0.5 l water capacity.

This standard specifies the requirement for periodic inspection and testing to verify the integrity of such gas cylinders to be reintroduced into service for a further period of time. This standard does not apply for periodic inspection and testing of acetylene cylinders and composite cylinders.

NOTES

1 Composite cylinders are excluded because of totally different nature of construction which calls for different techniques during period testing.

2 If required a separate standard may be prepared for composite cylinders periodic inspection and testing. The panel for this work may include the organizations who already have set up such facility.

2. REFERENCES

The standards listed below contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

IS3224 : 2002 Valve fittings for compressed gas cylinders excluding liquefied petroleum gas (LPG) cylinders — Specification (third revision)

IS 3745 : 2006 Yoke type valve connections for small medical gas cylinders — Specification (second revision)

IS 3933 : 1966 Colour identification of gas cylinders and related equipment intended for medical use

IS 4379 : 1981 Identification of contents of industrial gas cylinders (first revision)

IS 5844 : 2014 Recommendations for hydrostatic stretch testing of compressed gas cylinders (first revision)

IS 7285 (Part 1) : 2018 Refillable seamless steel gas cylinders — Specification: Part 1 Normalized steel cylinders (fourth revision)

IS 7285 (Part 2) : 2017 Refillable seamless steel gas cylinders — Specification: Part 2 Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa (112 kgf/mm2) (fourth revision))

IS 8198 : 2004 Steel cylinders for compressed gas (atmospheric gases, hydrogen, high pressure liquefiable gases and dissolved acetylene gases) — Code of practice

IS 9122 : 2008 Inspection gauges for checking type 2 taper threads of gas cylinder valves, taper 3 in 25 — Specification (first revision)

IS 15490 : 2017 Seamless steel cylinders for onboard storage of compressed natural gas as a fuel for automotive vehicles — Specification (first revision)

IS 15975 : 2013 Gas cylinders - Conditions for filling gas cylinders