Single-shell tank exhausters

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

The U.S. Department of Energy has proposed construction of three new portable exhausters for use during retrieval of waste and other tank management activities in the 241-S Single Shell Tank (SST) Farm. Currently, an existing set of portable exhausters is authorized for use in many of the SST farms, including 241-S, under Approval Order DE05NWP-002, Revision 3.

Ecology is proposing to rescind the authorization to use the existing exhausters in 241-S through a simple revision and issuance of DE05NWP-002, Revision 4, which will continue to cover the other tank farms. A separate comment period has been opened the new draft Approval Order DE26NWP-001, which will only authorize use of the new exhausters in 241-S.

For more information, visit our Hanford public involvement page.