ML20237K882
| ML20237K882 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 08/18/1987 |
| From: | Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Nauman D SOUTH CAROLINA ELECTRIC & GAS CO. |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8708270331 | |
| Download: ML20237K882 (3) | |
Text
,
AUG l 81987 I
South Carolina Electric and Gas Company ATTN: Mr. D. A. Nauman, Vice President
]
Nuclear Operations j
P. O. Box'764 (167)
Columbia, SC 29218
-Gentlemen:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION CONCERNING SUMMER'S RESPONSES TO IEB 85-03 (DOCKET NO. 50-395) j The Nuclear Regulatory Commission is continuing its review of responses to IEB 85-03, " Motor Operated Valve Conrnon Mode failures During Plant Traraient Due to.-
,3 Improper Switch Settings."
The review indicates the need for additional 1
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l infonnation before the program to assure valve operability can be approved for your facility.
Please provid' e the additional information as stated in the enclosure.
It is requested that you submit the additional information within 30 days of the date of this letter.
Should you have any questions concerning this. letter, please a
l contact us.
Sincerely, i
I f
Alan R. Herdt, Chief Engineering Branch Division of Reactor Safety l
Enclosure:
Request for Additional Information cc w/ encl:
J 0. S. Bradham, Director, Nuclear Plant Operations J. L. Skolds, Deputy Director y
Operations and Maintenance dJ.B.Knotts,Jr.
Debevoise and Liberman d W. A. Williams, Jr., Special Assistant, Nuclear Operations -
t Santee Cooper dA.M.Paglia,Jr., Manager Nuclear Licensing
'bec w/ enc 1:
NRC Resident Inspector v
sJ. Hopkins, Project Manager, NRR A. -Gibson l
A. Herdt -
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J F. Jape 8708270331 s70 sis kR.Kiessel,NRR gDR ADOCK 0 395 Document Control Desk State of South Carolin g
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O ENCLOSURE l
REQUEST FOR ADDIT.IONAL INFORMATION (RAI) RE:
t j
Review of Responses to Action Item e of IE Bulletin 85-03
~
Licensee Unit (s): fummer 1 South Caroline F*uctric & Cas Co.
Date of xesponse: 05-14-86 P. O. Box 764 l
c Columbia, SC 29218 10-03-86 Slespohdent:
D. A. Nauman Vice President Nuclear Operations
-1 The information provided in your response'to Action Ites e of IE l
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. Has water hammer due to valve closure been considered in the
.decernination of pressure differentials?
If not..please 1
explain.
response of 05-14-86 However, similarly located MOVs of at least one other Westinghouse three-loop plant are listed for s
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inspection in accordance with bulletin re Please
}
revisc the listing to include these MOVs,quirements.
or justify their exclusion.
As required by Action Item a of the bulletin, consider the effect of inadvertent equipment Operations.
(a) Unlisted MOVs 8130A,'8130B, 8131A and 8131b'ere shown normally open in series in s crossover lir.e providing suction for the charging puwps, in Zone G-8 of FSAR Figure 9.3-16, Sheet 3 of 5, Amendment 2. August 1986, (GAI Dwg E-302-675).
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(b) Unlisted MOVs 8106, 8109A, 8109B and 8109C are shown s
normally open in miniflow lines of the charging pumps, in TN
. zones E-14 and F-11 of'the FSAR figure identified above.
(c) Unlisted MOVs 8132A, 8132B, 8133A and 8133B ere shown
.normally open in. series in a crossover line on the discharge s
side of the charging pumps, in Zone G-12 of the FSAR figu.e identified above.
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Enclosurc 2
i (d) Unlisted MOV 8885 is shown normally closed in a discharge l
line of the centrifuga-1 chSrsing pumps to the RCS cold legs l
in Zone C-9 of FSAR Figure 6.3-1 Sheet 1 of 3 Amendment 2, August, 1986 (GAI Dvg E-302-691).
(e) Unlisted MOYs 8803A and 8803B are shown normally closed in parallel in charging pump discharga to the BIT, in Zone J-13
. of PSAR Figure 6.3-1, Sheet 1 of 3, Amendment 2, August, 1986 (CAI Dvg E-302-691).
- 3. Plense expand th p oposed program for action items b, e and d of thy bulletin to include the following' details as a minimus:
(a) commitment to a training progras'for setting switches, maintaining valve operators, using signature testing equipment anc interpreting signatures.
(b)' commitment to justify continued operation of a valve determined to be inopwrable, and (c) description of a method possibly needed to extrapolate valve stem thrust measured at less than maximum differential pressure.
- 4. Please schedule the planned dates for completing action items b, c, and d (due November 15,1987) and Action Item f (due January 15, 1988).
- 5. Unlisted MOVs 2802A-MS and 2802B-MS are shown in zones E-9 and G-5 of FSAR Figure 10.3-1 (GAI Dws. No. D-302-011),
in steam supply lines to the turbine-driven AFW pump.
Please revise the listing to include these MOVs, or justify their exclusion.
As required by Action Iten e of the bulletin, consider the effect of inadvertent equipment operatjans.
W 4