DOUBLE SHELL TANK (DST) EMERGENCY PUMPING GUIDE
The purpose of this plan is to provide as much preplanning as practical for pumping waste out of the annulus or secondary containment of Double-Shell Tanks (DST). If the primary tank leaks, waste would accumulate in the secondary tank. For the purposes of this report, the terms ''secondary tank'' and ''annulus'' are used interchangeably. The preplanning will expedite emergency pumping and provide the basis for demonstrating that the leaked waste will be ''removed from the secondary containment system within 24 hours, or in as timely a manner as is possible'' as required by the Washington Administrative Code (WAC) 173-303-640 (4) (iv) ''Tank Systems''. There are 177 underground waste storage tanks in the Hanford Site 200 East and 200 West Areas. There are 149 single-shell tanks (SSTs), and 28 DSTs. The scope of this plan includes all 28 of the Hanford Site DSTs in AN, AP, AW, AY, AZ and SY Tank Farms. The scope also includes the transfer lines, pump pits, valve pits, jumpers, transfer pumps, sump pumps, and procedures necessary to accomplish the emergency pumping. Revision 5 of the Emergency Pumping Guide updates transfer routes and equipment in the Double Shell Tank Farm to be consistent with the transition to a RCRA compliant operating system as of July 1, 2005.
- Research Organization:
- CH2M
- Sponsoring Organization:
- EM
- DOE Contract Number:
- AC06-96RL13200
- OSTI ID:
- 842634
- Report Number(s):
- HNF-3484, Rev.5; DE-AC06-96RL13200; TRN: US0503609
- Country of Publication:
- United States
- Language:
- ENGLISH
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Double shell tanks emergency pumping plan