Standards & specifications
The standards our gas and plant are made to
Which Indian Standard applies to your gas, your cylinder, its valve, its colour, its filling and its next hydrostatic test — and, for each one, how KIGL conforms to it. Written by a manufacturer that has made gas since 1947 and sat on the BIS committees behind these standards.
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- Standards explained
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- We manufacture and test to
- BIS
- Committee members
| Standard | Subject | What it governs | Read |
|---|---|---|---|
| IS 308 · IS 7312:2018 | The standards for dissolved acetylene | IS 308, IS 7312, IS 8433, IS 16271 and IS 11006 explained — the specification, cylinder, testing and filling standa… | Read |
| IS 309 · IS 7285 (Part 1):2018 | The standards for industrial oxygen | IS 309, IS 7285, IS 3224, IS 15975 and IS 8451 explained — the gas, cylinder, valve, filling and retest standards t… | Read |
| IS 4379:1981 · IS 3933 | IS 4379 gas cylinder colour codes in India, gas by gas | The IS 4379 ground colours and neck bands for every industrial gas cylinder in India, why oxygen and carbon dioxide… | Read |
| IS 8451:2018 · IS 8433:2017 | Gas cylinder retest intervals | How often a gas cylinder must be retested in India, which standard applies to which gas, what requalification invol… | Read |
| IS 8471:2003 · IS 14814:2023 | The Indian Standard for acetylene generators | What IS 8471:2003 covers, why acetylene generators need a standard of their own, and how it works with the IS 14814… | Read |
| Indian Pharmacopoeia · IS 3745:2024 | Medical gas standards in India: IP, IS 3745 pin-index and IS 3933 | Why medical oxygen is a drug and not an industrial gas — the Indian Pharmacopoeia monograph, the IS 3745 pin-index… | Read |
| IS 11006:2011 · IS 16485:2020 | Flashback arrestor standards | IS 11006, IS 16485 and EN ISO 5175-1 explained — what a flashback arrestor must do, where it must be fitted, and wh… | Read |
The standards KIGL works to
Every gas we fill, every cylinder it goes into and every piece of equipment we build is made to a named Indian Standard. These are ours, with the edition, so they can be checked rather than taken on trust.
| What we do | Standard | How we conform |
|---|---|---|
| The gas we fill Each gas is filled to its own Indian Standard specification, not to a general one. | ||
| Dissolved acetylene Guwahati works | IS 308:1988 Dissolved Acetylene (Gas) | Filled to the IS 308 specification in cylinders to IS 7312. |
| Industrial oxygen Guwahati works | IS 309:2023 Oxygen, Compressed Gas and Liquid — Specification | Filled to the IS 309 specification. |
| Nitrogen Guwahati works | IS 1747:2023 Nitrogen, Compressed Gas and Liquid — Specification (Second Revision) | Filled to the IS 1747 specification. |
| Carbon dioxide Guwahati works | IS 307:1966 Carbon Dioxide | Filled to the IS 307 specification. |
| Argon Guwahati works | IS 5760 Argon, Compressed and Liquid | Filled to the IS 5760 specification. |
| Hydrogen | IS 1090:2002 Compressed Hydrogen | Supplied to the IS 1090 specification. |
| The cylinders it goes into Construction, identification and the periodic test that keeps a cylinder in service. | ||
| Cylinder periodic testing Guwahati works | IS 8451:2018IS 8433:2017 Periodic Inspection and Testing of Seamless Steel Gas Cylinders; Periodic Inspection and Maintenance of Dissolved Acetylene Gas Cylinders | Cylinders are hydrostatically retested and requalified on the statutory cycle — IS 8451 for seamless steel, IS 8433 for dissolved acetylene. |
| Cylinder identification and colour Guwahati works | IS 4379:1981IS 3933 Identification of the Contents of Industrial Gas Cylinders; Medical gas cylinder colours | Cylinders are painted, banded and marked to IS 4379; medical cylinders follow IS 3933. |
| The equipment we build Plant and safety equipment manufactured at the Kolkata works. | ||
| Acetylene generating plant Kolkata works | IS 8471:2003IS 14814:2023 Acetylene Generators — Requirements; Acetylene — Code of Safety | Plants are designed and manufactured to IS 8471 and laid out to the IS 14814 code of safety. |
| Flashback and flame arrestors Kolkata works | IS 11006:2011 Flame Arrestor for Use with Fuel Gases | Manufactured to the IS 11006 requirements. No third-party type-test certification is claimed. |