ML20236H275
| ML20236H275 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/29/1987 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Randazza J Maine Yankee |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8708050123 | |
| Download: ML20236H275 (4) | |
Text
_, _
N.
JUL 291987 Docket No. 50-309 Maine Yankee Atomic Power Company ATTN: Mr. J. B. Randazza Vice President-l-
. Nuclear Operations l
83 Edison Drive Augusta, Maine 04336 Gentlemen:
Subject:
Request for Additional Information In order to complete their review of your response to IE Bulletin 85-03, the NRC Office of Nuclear Reactor Regulation (NRR) requires additional information.
The additional information requirements are described in the enclosure.
A reply within 30 days of receipt of this letter is requested.
Please send a copy of your reply to Mr. R. J. Kiessel of.RR.
Your cooperation is appreciated.
Sincerely, i
NE'"?! Etseeg #
l Edward C. Wenzirfcler, Chief I
Projects Branch No. 3 j
Division of Reactor Projects 1
Enclosure:
As Stated I
cc w/ enc 1:
I C. E. Monty, President C. D. Frizzle, Assistant Vice President / Manager of Operations J. H. Garrity, Plant Manager P. L. Anderson, Project Manager G. D. Whittier, Licensing Section Head J. A. Ritsher, Attorney (Ropes and Gray)
Phillip Ahrens, Esquire Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety'Information Center (NSIC)
NRC Resident Inspector State of Maine 870B050123 870729 ADOCM 05000309 l
gDR PDR
JUL 2 91987 Maine Yankee Atomic Power Company 2
bec w/ encl:
Region I Docket Room (with concurrences)
Management Assistant, DRMA (w/o encl)
DRP Section Chief M. McBride, RI, Pilgrim H. Eichenholz, SRI, Yankee P. Sears, LPM, NRR R. J. Keissel, NRR (w/o encl)
Robert J. Bores, DRSS I
I:DRP R :DRP R
R Limroth/meo
.jpp
.e zi ger 7/21/87
\\Y qk$$
OF ICIAL RECORD COPY 4
Page 1 of 2 REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Unit (s): Maine Yankee Maine Yankee Atomic Power Company Date of Response: 05-21-86 Edison Drive 06-04-86 Augusta, Maine 04336 10-16-86 j
12-22-86 l
Respondent:
I G.
D. Whittier, Manager Nuclear Engineering and Licensing The information provided in your response to Action Item e of IE Bulletin 85-03 was found to be deficient in some areas.
Please provide the additional information necessary to resolve the following comments and questions:
- 1. Unlisted MOVs SIA-M-11,
-21, and -31 in discharge lines of the safety injection tank system are shown normally open on Drawing 11550-FM-91B, Revision 17 The possible problem that the system would be inoperable if the POVs were left closed inadvertently should be addressed.
Based on the assumption of inadvertent equipment operations as required by Action Item a of the bulletin, revise Table 1 of the response cf 06-04-86 to include these valves.
- 2. Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, riesse explain.
- 3. Unlisted MOV CH-M-86 is shown locked open in a miniflow line leading from the charging pumps to the seal water heat exchanger, in Zone I-1 of Drawing 11550-FM-91B, Revision 17.
If power is removed from the motor in addition to the locked-open position of this MOV, please state this in your response.
Otherwise, address the effect of assuming inadvertent equipment operations as requested by Action Item a of the bulletin, and revise Table 1 of the response of 06-04-86 to include this valve.
We note that similarly located MOVs in some other C-E plants are listed for inspection per bulletin requirements.
4 Unlisted MOVs HSI-M-40 and -43 are shown normally closed (fail as is) in crossover lines in discharge of the charging pumps, in zones H-7 and H-8 of Drawing 11550-FM-91B, Revision 17 Address the effect of assuming inadvertent equipment operations
Page 2 of 2 RAI for Maine Yankee as requested by Action Item a of the bulletin, and revise Table 1 of the response of 06-04-86 to include these valves.
We note that MOVs in similarly located crossover lines of other C-E plants are listed for inspection per bulletin requirements
- 5. Listed MOVs HSI-M-11, -12,
-21, -22, -31 and -32 of the HPSI System are three-inch globe valves.
Listed HOVs HSI-M-41 and
)
-42 of this system are four-inch globe valves.
We were advised recently that the MOVATS data base does not include globe valves with orifice sizes less than 1.75 or greater than 2.0 inct;es.
Will representative samples of these three-inch and four-inch globe valves be tested at full differential ~ pressure?
- 6. Please expand the proposed program for action items b, e and d I
of the bulletin to include the following details as a minimum:
1 (a) commitment to a training program for setting switches, I
maintaining valve operators, using signature testing equipment and interpreting signatures, (b) commitment to justify continued operation of a valve determined to be inoperable, and (c) description of a method possibly needed to extrapolate valve stem thrust measured at less than maximum. differential pressure.
7 Please explain why no differer_tial pressure for closing MOVs HSI-M-11, -12, -21, -22, -31. -32, -41 and -42 is given in Table 1 of the response of 06-04-86. These valves are in discharge lines of the charging pumps.
We note that maximum differential pressure for opening and closing are equal for the typical C-E plant.
- 8. Please submit a date for planned completion of Action Item f of the bulletin.
The specified due date is January 15,1988.
l l
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