ML20196K506
| ML20196K506 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/28/1988 |
| From: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20196K509 | List: |
| References | |
| 4410-88-L-0091, 4410-88-L-91, NUDOCS 8807070008 | |
| Download: ML20196K506 (2) | |
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GPU Nuclear Corporation
,U Nuclear
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Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dlal Number:
(717) 948-8461 June 28, 1988 4410-88-L-0091/0045P US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
Dear Sirs:
Three Mile Island Nuclear Station, Unit 2 (TMI-2)
Operating License No. DPR-73 Docket No. 50-320 Annual Update to the System Description for the Dewatering System for Defueling Canisters Pursuant to NRC letter dated February 4, 1982, the annual update to the System Description for the Dewatering System for Defueling Canisters is forwarded for j
1 your information.
This update, which constitutes Revision 6 to the system description, includes the following changes:
Added t,he ability to utilize either a 0.5 micron or a 16 micron I
o (nominal) filter in the DS-F-1 position, Revised maximum pressure drop across DS-F-1 to 55 psig, o
Added high motor temperature trip to HIS-9A and HI3-98.
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Revised backflush of canistel to reflect ability to backflush knockout and fuel canisters at pressures up to 40 psig.
Indicated ability to obtain local grab samples at V031 A(B).
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Revised rating of jib crane to 500 lbs.
Added ability to use SDS Vacuum Outgassing and Dryirg System for o
final dewatering.
8807070008 88062G DR ADOCK 05000320 PNU GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation
Document Control Desk June 28,1988 4410-88-L-0091 o
Revised dewatered weight of a filter canister to be greater than 199 lbs. to agree with 25% void volume,
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o Added statement of comitment to disinfect filter canisters.
The above changes reflect updates to the system and historical information which continues to evolve as system operations continue.
Sincerely,
. d. Standerfe
' Director, TMI-2 DHW/ emf Attachnent rz cc:- Senior Resident Inspector, TMI - R. J. Conte Regional Administrator, Region 1 - W. T. Russell Director, Plant Directorate IV - J. F. Stolz Systems Engineer, TMI Site - L. H. Thonus t
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