History: Below is a listing of the Revisions and Changes made to this UFGS.
| KEY | PREPARING ACTIVITY (PA) | A Army | N Navy | F Air Force | S NASA [ARCHIVED] |
|---|---|---|---|---|---|
| ACTION | N New | R Revision | C Change | D Deletion |
| Release | PA | Date | Action | Change # | Nature of Change or Revision |
|---|---|---|---|---|---|
| Feb-2021 | A | Feb-2021 | R | Superseding UFGS 31 21 00 PIPING; OFF-GAS without revision to comply with MF 2011 in response to CCR 2086. Nontechnical title change. | |
| Aug-2017 | A | Aug-2008 | C | 1 | Changed Material Safety Data Sheets (MSDS) to Safety Data Sheets (SDS). |
| Aug-2008 | A | Aug-2008 | R | Compliance with CSI SectionFormat | |
| Oct-2007 | A | Oct-2007 | R | Updated seismic criteria |
