| S.No. | IS Number | IS Title | Reaffirmation Year | Category | Document | Comment |
|---|---|---|---|---|---|---|
| 1 | IS 15678 : 2006 | Intelligent pigging of pressurized natural gas pipelines - Code of practice | 2021 | Code of Practice | Download | |
| 2 | IS 15679 : 2006 | Hot tapping , stopple plugging/line plugging of pressurized natural gas pipelines - Code of practice | 2021 | Code of Practice | Download |