ICS 23.020.30                          MED 16

Reaffirmed 2022

1. Scope

This standard specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes and tests at manufacture ofrefillable quenched and tempered seamless steel gas cylinders of water capacities from 0.5 litre up to and including 400 litres for compressed, liquefied and dissolved gases exposed to extreme ambient temperatures (normally between -20 and +65°C). This part is applicable to cylinders with a maximum tensile strength (R_m) less than 1 100 MPa (112 kgf/mm²).

NOTES

1 If so desired, cylinders of water capacity less than 0.5 litre may be manufactured and certified to this standard.

2 If so desired, cylinders ofwater capacity exceeding 400 litres may be manufactured and certified to this standard. The number of cylinders to be subjected to pressure cycling test, and sampling method for mechanical tests shall be decided in consultation with the statutory authority.

2. REFERENCES

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

1500 : 2005 Method for Brinell hardness test for metallic materials (third revision)

1586 : 2000 Method for rockwell hardness test for metallic materials (Scales A -B-C-D-E-F-G-H-K 15N, 30N, 45N; 15T, 30T and 45T) (third revision)

1608 : 2005 Mechanical testing of metals tensile testing (second revision)

1757 : 1988 Method for steel - Charpy impact test (V-notch) for metallic materials (second revision)

2878 : 2004 Fire extinguisher carbon dioxide type (portable and trolley mounted) - Specification (third revision)

3224 : 2016 Valve fittings for compressed gas cylinders excluding liquefied petroleum gas LPG) cylinders Specification (fourth revision)

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

3933 : 1966 Colour identification ofgas cylinders and related equipment intended for medical use

4258 : 2011 Metallic materials - Conversion of hardness values (second revision)

4379 :1981 Identification of the contents of industrial gas cylinder (first revision)

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

7241:1981 Glossary ofterms used in gas cylinder technology (first revision)

7312 : 1993 Welded and seamless steel dissolved acetylene gas cylinder - Specification (second revision)

15683 : 2006 Portable fire extinguishers - Performance and construction - Specification

15958 : 2012 Compressed natural gas (CNG) for automotive purposes - Specification

IS/ISO 11114-1 : 2012 Gas cylinders - Compatibility ofcylinder and valve materials with gascontents - Part 1 Metallic material