ML20237G214
| ML20237G214 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/17/1987 |
| From: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20237G217 | List: |
| References | |
| 0045P, 4410-87-L-0120, 4410-87-L-120, 45P, NUDOCS 8708240007 | |
| Download: ML20237G214 (2) | |
Text
_ _ _ _ _ _ _ _ _
e GPU Nuclear Corporation g
gf Post Office Box 480 Route 441 South Middletown, Pennsylvania 17057-0191 717 944 7621 TELEX 84 2386 Writer's Direct olal Number:
(717) 948-8461 4410-87-L-0120 Document ID 0045P August 17, 1987 US Nuclear Regulatory' Commission Attn: Document Control Desk Washington, DC 20555 Oear Sirs:
Three Mile Island Nuclear Station, Unit 2 (TMI-2)
Operating License Nu. DPR-73 Docket No. 50-320 Annual Update of the System Description for the TMI-2 Defueling Canister Dewatering System Pursuant to NRC letter dated February 4, 1982, the annual update to the System Description for the TMI-2 Defueling Canister Dewatering System is forwardeo for your information. This update, which constitutes Revision 5, includes the following changes:
o The Miscellaneous Waste Holdup Tank has been added as a transfer path for dewatering system effluent.
o The ability to use water and/or argon to backflush has been added, o
The cover gas pressure has been increased to 13-15 psig and the dewatering gas pressure has been increased to 40 psig.
o The canister pressure check has been revised to indicate that the canister is monitored for ten (10) minutes after removal of the relief valves, o
The flexibility to rewet the filter media using a backfill from DS-T-1 has been added, o
Installation of check valves V063A and V0638 to prevent the backflow of contaminated liquid into the argon manifold.
\\
8708240007 e70a17 0
PDR ADOCK 05000320 h0 P
PDR U
I\\
GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation
l Document Control Desk August 17, 1987
.i 4410-87-L-0120 i
)
o The Canister Handling and Preparation for Shipment Safety Evaluation Report'has been added as a reference.
The above changes reflect operational changes to the system that are designed to increase the operational efficiency of the system.
i l
i Sincerely, F. R. Stander er Director, TMI-2 FRS/RDW/eml l
Attachment l
cc: Regional Administrator, Region 1 - W. T. Russell f
Director, TMI-2 Cleanup Project Directorate - Dr. W. D. Travers i
l l