ML20246P801
| ML20246P801 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/12/1989 |
| From: | Roche M GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20246P807 | List: |
| References | |
| 4410-89-L-0040, 4410-89-L-40, NUDOCS 8905220285 | |
| Download: ML20246P801 (3) | |
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GPU Nuclear Corporation
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Route 441 South Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:
(717) 948-8400 May 12,1989 4410-89-L-0040/0136P 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 Defueling Water Cleanup System Technical Evaluation Report, Revision 12 l
Pursuant to NRC letter dated February 4, 1980, attached for your information is the annual update to the Technical Evaluation Report (TER) for the i
Defueling Water Cleanup System (DWCS). This update addresses system modifications effected via approved design modification documents identified in the Summary of Change Section and deletes references to the Submerged Demineralized System which is no longer in operation. The following changed pages are:
o DWCS TER, Pages 1 through 25; o
DWCS TER, Attachment 1, Pages 7 and 10; and o
DWCS TER, Attachment 2, Pages 2, and 6 ttrough 25.
Additionally, this revision includes revised drawings 2-M74-DWCO2 and 2D-3525-ll88 (Attachments 4 and 8, respectively).
Sincerely, 7<6M M. B. Roche Director, TMI-2 RDW/ emf Attachments
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cc:
F. I. Young - Senior Resident Inspector, TMI h
W. T. Russell - Regional Administrator, Region I J. F. Stolz - Director, Plant Directorate I-4 L. H. Thonus - Project Manager, TMI Site GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation 890522O295 890512 PDR ADOCK 05000320 P
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No' I
MNuclear 3525 015 Defueling Water Cleanup System Technical Evalution Report Rev.
SUMMARY
OF CHANGE Approval Date 0
Initial issue.
/M 12/84 1
Revised to incorporate system design changes and comments 1/85 on Revision 0.
M 1/85 2
Revised to incorporate comments on Revision 1.
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3 Revised to incorporate comments on Revision 2.
1/85 4
Revised to reflect addition of relief valves at the outlei s
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4/85 of the defueling filter canisters, deletion of fuel pool cleanup system boronmeter. and correction of minor typo-graphical errors.
5 Revised to correct and clarify description of low level g
5/85 alarm setpoints for fuel transfer canal.
6 Revised to reflect the potential for operation of portions 6/85 of the DWCS prior to system being fully operational and to incorporate minor editorial changes.
7 Revised to incorporate Dewatering System inputs to DWCS gfj&
9/85 and provide a general update of the DWCS TER.
8 Revised to reflect capability to bypass the filter caniste rs. g 12/85 9
Revised to clarify site dose assessment for fuel transfer 1/86 canal / spent fuel pool cleanup system.
10 Revised to incorporate system design changes per ECAs gp 4/87 3525-86-0313, 0328, 0356, 0377, 0388; 3255-86-0393; 3525-86-0395; 3255-86-0406; 3525-86-0416; 3255-86-0422; 3525-86-0429, 0438; 3525-87-0444, 0450, 4051, 0454, and 0455.
In addition, the following modifications were incorporated: 1) " deep suctions," 2) variable post-filer micron ratings, 3) use of organic lorded ion exchanger, and 4) the use of deep bed filters (mcdified knockout canisters).
11 Revised to incorporate system design changes per ECAs
. p 7/88 3525-86-0322; 3525-87-0467, 0476, 0480, 3525-88-0503, 0504,'MMAs 3525-87-0003, 0017, 0018, 0020, 0024, 0037; y
E 3257-87-0046; and 3525-88-0068 and 0074 Revised to si reflect current defueling tools / system which interact 9
with the DWCS.
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3525-015 age 3 of 25 Defueling Water Cleanup System Techncial Evaluation Report Rev.
SUMMARY
OF CHANGE Approval Da te 12 Revised to incorporate system design changes per MMA
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5/89 3525-88-0116; see Section'1.3.1 of Attachment 2.
Added Section 8.0, "DWCS Flow vs. Allowable Pressure," to.
Deleted reference to SDS (system removed from operation). Revised to incorporate MMA 3525-88-0132 (see Attachment 8). Also includes revised drawing 2-M74-DWC02 (see Attachment 4). Revised Section 4.3 for person-rem due to DWCS operation.
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