ML20036C088
| ML20036C088 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 06/08/1993 |
| From: | Schrage J COMMONWEALTH EDISON CO. |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| GL-89-10, NUDOCS 9306140049 | |
| Download: ML20036C088 (2) | |
Text
_ _ - _ _ _ _ _ _
' Commonwealth Edison O -
1400 Opus Place Downers Grove, Illinois 60515 g
iI June 8,1993 Dr. Thomas E. Murley, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission R
Washington, DC 20555 Attn: Document Control Desk 1
Subject:
Quad Cities Nuclear Station Units 1 and 2 i
Supplemental Response to Generic Letter 89-10, Supplement 3:
" Consideration of the Results of NRC-Sponsored Tests of Motor-Operated Valves" NRC Docket Nos. 50-254 and 50-265_
Reference:
(1)
D.R. Chrzanowski to T.E. Murley letter dated September 5,1991.
(2)
R.J. Barrett to T.J. Kovach letter dated April 16,1993.
Dear Dr. Murley:
In Reference (1), CECO provided a response to a request for additional information (RAI) for Generic Letter 89-10, Supplement 3. In that letter, CECO identified: the criteria used to determine the status of Supplement 3 MOVs; identification of any MOVs found to be deficient; and a schedule for all necessary corrective actions. The schedule contained in Reference (1) included proposed modifications for both deficient and non-deficient MOVs.
In Reference (2), the NRC accepted CECO's proposed schedule for MOV modifications at Quad Cities Station. The NRC also indicated that CECO should complete the needed modifications to the RWCU Unit i 12012 and 1201-5; and Unit 21201-2 and 1201-5 MOVs.
The NRC further stated that the other MOVs within the scope of GL 89-10, Supplement 3 l
should be addressed as part of the GL 89-10 program and schedule, unless further information dictated accelerated action. The necessary modifications to the RWCU valves at Quad Cities Station were completed on Unit I during the Q1R12 outage (ending December 1992); the Unit 2 modifications were completed during the recent Q2R12 outage.
r 11001b
'f A
k:0002539:
G 9306140049 930608 E
l PDR ADOCK 05000254 is P
PDR f_________________________________________
f
'Dr. 'M urley June 8,1993 The purpose of this letter is to provide a revised schedule for implementation of the proposed modifications to the HPCI Unit 12301-5 and Unit 2 2301-5 MOVs (described in v
Reference (1)). These valves are currently non-deficient; the proposed modifications will enhance design margin. The scope of the modifications include replacement of the actuator, yoke, and power cable. This scope of work is an increase in the scope described in Reference (1).'
The proposed modifications to the 23015 MOVs were originally scheduled for implementation during the twelfth refuel outage on both units at Quad Cities Station (Q1R12 and Q2R12). Due to procurement difliculties, CECO will implement these proposed modifications during the thirteenth refuel outage on both Quad Cities units (Q1R13 and Q2R13).
These are currently scheduled to begin in March 1994 and September 1994 respectively.
To the best of my knowledge and belief, the statements contained in this document are true and correct. In some respects these statements are not based on my personal knowledge, but on information furnished by other CECO employees. Such information has been i
reviewed in accordance with company practice and I believe it to be reliable.
j If there are any questions or comments, please contact John L. Schrage at 708-663-7283.
1 F
Sincerely, John L. Schrage Nuclear Licensing Administrator cc: J. Mutin - Regional Administrator - Rill C. Patel - Quad Cities Project Manager - NRR T. Taylor - Senior Resident Inspector - Quad Cities Office of Nuclear Facility Safety - IDNS i
l k:0002539.
i m
,, _ _.