ML20137H422
| ML20137H422 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/25/1985 |
| From: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| To: | Travers W Office of Nuclear Reactor Regulation |
| References | |
| 0363A, 363A, 4410-85-L-0237, 4410-85-L-237, NUDOCS 8512020385 | |
| Download: ML20137H422 (2) | |
Text
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s w
e GPU Nuclear Corporation g
gf Post Office Box 480
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Route 441 South Middletown, Pennsylvania 17057 0191 j
717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:
I (717) 948-8461 f
4410-85-L-0237 Document ID 0363A Novemoer 25, 1985 f
I TM1 Program Office 0
0 l
Attn: Dr. W. D. Travers O
O l
Acting Director 5
df, US Nuclear Regulatory Commission f
c/c Three Mile Irland Nuclear Station Middletown, PA 17057 9%
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~
Dear Dr. Travers:
Tnree Mile Island Nuclear Station, Unit 2 (TMI-2)
Operatin0 License No. OPR-73 l
Docket No. 50-320 Defueling Hydraulic Systen Fluid Testing GPU Nuclear letter 4410-85-L-0215, dated October 29, 1985, provided tne results of testing performed on various fluids being considered for use in the defueling hydraulic system.
In that letter, GPU Nuclear noted that two fluids (Borate tister/UCON WS-34 mixture and UCON WS-34/ doric Acid mixture) were acceptable; however, the UCON WS-34/ Boric Acid mixture would be used based on availability.
Since initiating defueling activities, problems have Deen encountered with the UCON WS-34/80ric Acid mixture. Although Doron concentration remained above the required 4350 ppm, precipitation of boric acid crystals has occurred. To preclude further deterioration of the hydraulic fluid in the system and potential adverse effects on the defueling tooling, GPU Nuclear intends to drain and flesh the hydraulic system and replace the WS-34/ Boric Acid mixture with the UCON WS-34/dorate Ester mixture. The replacement fluid will be a 75/25 UCON WS-34/dorate Ester volumetric ratio as described in the referenced
- letter, b
00h20 8f I
POR I
P GPU Nuclear Corporation is a subsidlary of the General Public Utilities Corporation
's Dr. W. D. Travers Novemoer 25, 1985 4410-85-L-0237 GPU Nuclear will keep you apprised of the status of this activity and of any %
new developments regarding hydraulic fluids and hydraulic system performance.
Sincerely, F. H. Standerfe Vice President /0irector, TMI-2 i
FRS/RBS/eml l
_. _ _ _ _ _ _ _ _. _ _.. _.. _.