ML20203J772
| ML20203J772 | |
| Person / Time | |
|---|---|
| Site: | 07003091 |
| Issue date: | 02/25/1998 |
| From: | Bryce A NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Pierson R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML19317C919 | List: |
| References | |
| NUDOCS 9803040284 | |
| Download: ML20203J772 (2) | |
Text
. .
- 2%
70-369/
UNITED STATES
)M. Ik j j NUCLEAR REGULATORY COMMISSION g 1e WAsHINoToN, o.C. 2065M001
%y ,# February 25, 1998 MEMORANDUM TO: Robert C. Pierson, Chief Special Projects Branch Division of Fuel Cycle Safety and Safeguards NMSS THRU: Michael Tokar, Section Chief TWRS Section Special Projects Branch Division of Fuel Cycle Safety and Safeguar s, NMSS FROM: Amy L. Bryce TWRS Section 7 Special Proje Branch Division of Fuel Cycle Safety and Safeguards, NMSS
SUBJECT:
TRIP REPORT ON THE TWRS STAFF TRIP TO HANFORD FROM FEBRUARY 1, TO FEBRUARY 4,1998 February 2,1998: Tank Waste Remediation System (WIRS) Section members Amy Bryce and Gary Comfort attended a Lockheed Martin Advanced Environmental (LMAES) technical presentation at the Hanford Reservation in Richland, Washington. The presentation was hosted by the Department of Energy's (DOE) Regulatory Unit (RU), and attended by RU staff members and contractors. Other NRC TWRS Staff members were connected to the presentations by video conference. A list of speakers, and brief highlights of their presentations,is attached (Attachment A).
February 3,1998: TWRS Section Site Representative Walter Pasciak and Amy Bryce met with Lori Huffman of DOE-RL Waste Disposal Division (WDD) to discuss the DOE review process for the TWRS Privatization Contractor environmental reports (ERs), and DOE comments on the ER. A brief summary of this meeting is attached (Attachment B).
Amy Bryce toured the Effluent Treatment Facility (ETF) located in the northeastern 200-Arcas of the Hanford Reservation. The ETF, which is a waste water treatment plant, is slated to accept liquid radioactive offluents from the TWRS Privatization Facil&s. Waste water is fed to the plant via the Liquid Effluent jf Treatment Facility (LETF), three,28,350 m2 (7.5 million gallon) covered, lined pon:fs. The plant unit I operations are an initial filtration stage, fol6 owed by UV oxidation in conjunction with 2H 70 degassing, i I
reverse csmosis filtration, and ion exchange for polishing. Process waste is evaporated, and the evaporator bottoms are drum filtered. pH adjustment throughout the process is accomplished by the addition of HNO 3, H2SO., and NaOH.
The highlights of the tour include:
The intermediate feed tank between the LETF and the facility is prone to a substantial amount of biological growth, which leads to filter clogging. The growth is believed to stem from Columbia River Water, which was used to test the linings in the LETF, and cannot be completely emptied from the ponds.
1 5i 7
During the tour, the plant was treating groundwater contaminated with metals and carbon i tetrachloride. The groundwater has a high Ca and Mg content, which are precipitating as sulfates in 9803040284 980225 PDR ADOCK 07003091 '" - % -
C PDR
,11 I,II, t .< t. ,j , ,
- ))f
.Il1.11.1111111 s a s -
a<
.,e 9-2 the feed tank to the evaporator. The plant periodically stopo processing, and manually removes the precipitants. The goalis to add a vortex separator prior to the storage tank to prevent solids accumulation.
The ETF discharges treated water in the northwestern 200-Areas, and is permitted to discharge tritium. The groundwater flow path is through a break in Gable Mountain, and is relatively slow.
Discharged water is expected to reach the Columbia River on the order of 100 years.
Negotiations between the TWRS Privatization Contractors and the ETF are on-going. (There is an existing inte4 ace control document (ICD)). At the time of the tour it had not yet been determined if the ETF would add or change any process units to accommodate the contractors. The facility anticipates that it will be dedicated solely to treating the TWRS Privatization Contractors once they begin operations.
Amy Bryce completed Hanford General Employee Training.
Attachments: As stated (PROPRIETARY INFORMA' LION)
(Business Sensith e)
Docket 70-3091