ML20238A874
| ML20238A874 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 08/21/1987 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Sieber J DUQUESNE LIGHT CO. |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8708310251 | |
| Download: ML20238A874 (6) | |
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.X AUG 211987 Docket Nos. 50-334 50-412 Duquesne Light Company ATTN:
Mr. J. D. Sieber Vice President Nuclear Post Office Box 4 i
Shippingport, Pennsylvania 15077 Gentlemen:
Subject:
Request for Additional Information In order to complete their review of your response to IE B.illetin 85-03, the NRC l
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 NRR.
l Your cooperation is appreciated.
Sincerely, j
Original S16uod Ng b
Edward C.
nzinger, Chief l
Projects Branch No. 3 i
Division of Reactor Projects 1
Enclosures:
As Stated 1
cc w/encis:
J. J. Carey, Senior Vice President, Nuclear Group H. M. Siegel, Manager, Nuclear Engineering Department C. E. Ewing, QA Manager W. S. Lacey, Plant Manager R. Druga, Manager, Technical Services i
R. Martin, Manager, Regulatory Affairs J. Crockett, Senior Manager of Nuclear Operations N. R. Tonet, Manager, Nuclear Engineering & Construction Unit R. J. Swiderski, Manager, Startup Group J. P. Thomas, Manager, Engineering C. O. Richardson, Stone and Webster Engineering Corporation Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector, Beaver Valley Unit 1 NRC Resident Inspector, Beaver Valley Unit 2 Commonwealth of Pennsylvania i
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Duquesne Light Company 2
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Management Assistant, DRMA (w/o enc 1)
DRP Section Chief R. J. Kiessler, NRR P. Tam, LPM, NRR T. Martin, DRSS S. Ebneter, DRS Robert J, Bores, DRSS F. Young, SRI, BV-2 D. Limroth, DRP DRP RI:
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0FFICIAL RECORD COPY
Page 1 of 2 REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
j Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Unit (s): Beaver Valley 1 Duquesne Light Date of Response: 05-16-86 Nuclear Group P. O. Box 4 Shippingport, PA 15077-0004 Respondent:
J. J. Carey Vice President, Nuclear 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 HOVs FW-158A, -158B and -158C are shown normally open on UFSAR Figure 10.3-5, Rev 4 (1-86), in discharge lines from the AFW pumps to the steam generators.
They are downstream l
from listed and normally open MOVs FW-151A through FW-151F.
Please explain this apparent omission, or revise Table 1 of the response of 05-16-86 to include valves FW-158A, -158B and
-158C.
- 2. Unlisted MOV MS-105 is shown normally open on UFSAR Figure 10.3-1, Rev 4 (1-86), in the steam line from the steam generators to the auxiliary feedwater pump turbine, FW-T-2.
Please explain this apparent omission, or revise Table 1 of the l
response of 05-16-86 to include MOV MS-105.
- 3. HOV CH-115B is shown normally open to take charging pump suction from the RWST on UFSAR Figure 9.1-1A, Rev 4, (1-86).
Parallel MOV CH-1150 is shown normally closed.
According to Ta ble 1 of the response of 05-16-86, both of these valves are closed for normal system operation.
Please resolve this apparent discrepancy.
A further consideration is that similarly located MOVs in other Westinghouse three-loop plants are shown normally closed.
- 4. Although the following MOVs are called normally closed in Table 1 of the response of 05-16-86, they are shown normally open on UFSAR Figure 6.3-1, Rev 3 (1-85).
We note that these HOVs are
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Page 2 of 2 RAI for Beaver Valley I shown normally closed on S&W Drawing 12241-RM-87A-19 for Beaver Valley Unit 2 and on P& ids for other Westinghouse three-loop plants.
Please resolve this apparent discrepancy, and check j
other MOVs as well.
(a) MOVs SI-867A and SI-867B are in parallel at the BIT inlet.
(b) MOVs SI-867C and SI-867D are in parallel at the BIT outlet.
- 5. Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, please explain.
- 6. Listed MOVs FW-151A through FW-151F of the AFW System are three-inch globe valves.
We have been advised recently that
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the MOVATS data base does not include globe valves with orifice sizes less than 1.75 or greater than 2.0 inches.
Will representative samples of these valves be tested at full i
differential pressure?
- 7. Please expand the proposed program for action items b, e and d of the bulletin to include the following details as a minimum:
(a) commitment to a training program for setting switches, maintaining valve operators, using signature testing equipment and interpreting signatures, (b) commitment to justify continued operation of a valve
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determined to be inoperable, and (c) description of a method possibly needed to extrapolate valve stem thrust measured at less than maximum differential pressure.
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Page 1 of 2
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I REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Unit (s): Beaver Valley 2 Duquesne Light Date of Response: 05-13-86 i
Beaver Valley No. 2 Unit Project 08-15-86 Organization, S.E.G. Building P. O. Box 328 Shippingport, PA 15077 Respondent:
J. J. Carey Vice President, Nuclear j
The information provided in your response.to Action Item e of IE j
Bulletin 85-03 was found to be deficient in some'ereas.' Please provide the additional information necessary to resolve the following comments and questions:
- 1. MOVs LCV-115B and LCV-115D are shown normally open to take charging pump suction from the RWST, in Zone E-8 of S&W Drawing 12241-RM-79D-16.
According to Table 1 of the, response of 08-15-86, both of these valves are to open on safety signal.
Please resolve this apparent discrepancy.
A further consideration is that similarly located MOVs in other Westinghouse three-loop plants are shown normally closed.
- 2. Unlisted MOVs 840, 836, 869A and 869B are shown normally closed in discharge lines of the HPSI (charging) pumps to cold and hot legs, in the upper left quarter of S&W Drawing 12241-RM-87A-19.
Similar MOVs 836, 869A and 869B of the HPSI System for Beaver Valley 1 are included in Table 1 of the Duquesne Light response of 05-16-86 for that unit.
Please revise Table 1 of the response of 08-15-86 for Unit 2 to include these valves, or justify their exclusion.
However, similarly located MOVs of another Westinghouse three-loop plant are listed for inspection in accordance with bulletin requirements.
Please revise Table 1 to include these MOVs, or justify their exclusion.
As required by Action Item a of the bulletin, consider the effect of inadvertent equipment operations.
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1 Page 2 of 2 S
RAI for Beaver Valley 2 (a) Unlisted MOVs 8130A, 8130B, 8131A and 8131B are shown normally open in series in a crossover line providing suction for the charging pumps, in Zone G-6 of S&W Drawing 12241-RM-79D-16.
(b) Unlisted MOVs 8132A, 8132B, 8133A and 8133B are shown normally open in series in a crossover line on the discharge side of the charging pumps, in Zone F-3 of the drawing identified above.
4 Unlisted MOV 841 is shown normally open, in series with listed MOV 867A (normally closed) and in parallel with listed MOV 867B (normally closed).
Refer to Zone I-3 of S8W Drawing 12241-RM-87A-19 Listed MOVs 867A and 867B are in parallel to ensure discharge of the HPSI pumps to the RCS cold legs.
It appears that added protection caused by the parallel arrangement would be nullified if unlisted MOV 841 were to be left closed inadvertently.
Please revise Table 1 of the response of 08-15-86 to include this valve, or justify its exclusion.
- 5. Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, please
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explain.
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- 6. Please expand the proposed program for action items b, c and d i
of the bulletin to include the following details as a minimum:
1 (a) commitment to a training program for setting switches, maintaining valve operators, using signature testing j
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.
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