ML20112J729
| ML20112J729 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 04/02/1985 |
| From: | Jens W DETROIT EDISON CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20112J734 | List: |
| References | |
| RTR-NUREG-0798, RTR-NUREG-798 NUDOCS 8504050290 | |
| Download: ML20112J729 (2) | |
Text
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4 cO'Eddi8' Nuclear Operatons Fermi-2 lhh April 2, 1985 gg
$u*$ ions 4
p ra NE-85-9466 i
i Director of Nuclear Reactor Regulation Attention:
Mr. B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing i
U. S. Nuclear Regulatory Commission j
Washington, D.C.
20555 l
i l
Dear Mr. Youngblood:
Reference:
-(l)
Fermi 2 i
NRC Docket No.58-341 I
(2)
Detroit Edison to NRC letter, " Inservice I
Testing of Pumps and Valves", EF2-72769, dated September 5, 1984 (3)
Detroit Edison to NRC letter, " Inservice Testing Program Clarification", EF2-72004, dated November 21, 1984
Subject:
Additional Information Relative to Inservice Testing Program l
NUREG-9798, Supplement No.4 (Fermi 2 SER) denied relief from the exercising requirements of Subsection IWV of Section XI l
of the ASME Code for control rod drive charging water header and cooling water header check valves C11-115 and C11-138.
[
Additional relief requests and clarifying information on the i
subject valves were provided in References (2) and (3).
Sub-sequent to the submittal of the references, a telecon between 3
the NRC (Mr. R. Kirkwood) and Detroit' Edison concluded Relief Request VR-43 was acceptable and identified the need for further investigation and information relative to VR-44 j.
(C11-138).
1 The purpose of this letter is to document the results of a special test performed to substantiate the alternative testing approach proposed in VR-44.
The test, performed per procedure 49.196.81, simulated the partia1' failure of. check valve Cll-138.
The successful test results were recently discussed with the NRC (Mr. J. Page), and it is our understanding that the issue is resolved with this submittal.
Specifically, partial opening (1 1/2 turns or
-j approximately 29% open) of valve Cll-104 was determined to adequately simulate the partial failure of C11-138, and thereby provide indication of related control rod movement for future comparison.
The procedure, with test results, is attached.
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F Mr. B. J. Youngblood April 2, 1985 NE-85-0466 Page 2 Please direct any questions to Mr. O. K. Earle at (313) 586-4211.
Sincerely, Iw Attachment 0
cc:
Mr. P. M. Byron Mr. R. Kirkwood Mr. M. D. Lynch Mr. J. D. Page USNRC Document Control Desk Washington, D.C. 20555
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