05000395/LER-1985-010, Forwards LER 85-010-00 in Response to Violations Noted in Insp Rept 50-395/85-15

Forwards LER 85-010-00 in Response to Violations Noted in Insp Rept 50-395/85-15

ML20133G621
Person / Time
Site:	Summer
Issue date:	06/21/1985
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8508090007
Download: ML20133G621 (1)

LER-2085-010, Forwards LER 85-010-00 in Response to Violations Noted in Insp Rept 50-395/85-15

Event date:
Report date:
3952085010R00 - NRC Website

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SOUTH CAROLINA ELECTRIC & GAS COMPANY POST OFFsCE 764 COLUMBIA. south CAROLINA 29218 n

o. w. oi ou. ; . ,- i "e O* QQ" vCr ear $ioeur nJ d y M June 21, 1985 Nuctsan OpenarioNS Dr. J. Ne ls on Grace Regional Administrator U.S. Nuclear Regulatory Commission Region II, Suite 2900 101 Marietta Street, N .'J .

Atlanta, Georgia 30323

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. N P F- 12 Response to Notice of Violation NRC Inspection Report 85-15 4

Dear Dr. Grace:

South Carolina Electric and Gas Company is in agreement with the alleged violations addressed in Enclosure 1 of NRC Inspection Report 50-395/85-15 and provides the attached responses. Please note that the attached copy of LER 85-010, which was previously submitted, is provided in response to Violation 395/85-15-02.

If there are any questions, please call us at your convenience.

V ry t 1(~yours, O. . Dixon, Jr.

CJM:0WD/ led Attachment cc: V. C. Summer C. L. Ligon (NSRC)

T. C. Nichols, Jr./0. W. Dixon, Jr. K. E. Nodland E. H. Crews, Jr. R. A. S t ou gh E. C. R ob e r t s G. Pe rc iva l W. A. Williams, Jr. C.- W. Hehl D. A. Nauman J. B. Knotts, Jr.

Group Managers S. D. Hogge O. S. Bradham I & E (Washington)

C. A. Price NPCF S. R. Hunt File 4

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At 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br /> on April 10, 1985, a failure to meet the requirements of Action Statement 2.c, Table 3.3-1, Technical Specification 3.3.1,

" Reactor Trip System Instrumentation," was id e n t i f ied . One power range excore nuclear instrumentation channel had been removed from service since 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> on April 9, 1985 for surveillance testing.

The Quadrant Power Tilt Ratio (QPTR) surveillance required by the

• Action Statement was not performed. l x

The cause of this event is a t t r ib u t ed to personnel error in that thi l persons r e s p o n s ib le failed to recognize the requirement of the A c t i t* *n l Statement. Immediate c o r r ec t iv e action was taken to obtain a full - ,

core flux map and verify the QPTR to be within specification.

The Licensee has initiated the following corrective action to preven +:

• recurrence. Surveillance Test Procedures which require entry into ,

Action Statement 2 of Table 3.3-1 will be revised to include a precaution to alert Operations of the requirement tomonitorQPTRat{

1 east once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> per Specification 4.2.4.2. The Licensee .

expects this action to be completed by July 31, 1985.  !

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tac Form 3ega "2' 4...cv Es eve so mo_c,3 LICENSEE EVENT REPORT (LER) TEXT CONTINUATION E s.'ets a 3135 DOCKET NUMSEm 121 LER NUMSEm 161 pact i3:

F ACILif f Namet tu "a" " t '.L' ' "'t'J:

Virgil C. Summer Nuclear Station 0 5 l0 l0 l0 l 3 l9l5 8l5 -

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0l 0 0l 2 0F 0l2 vin a . <. ,w wc w asse.nm At 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br /> on April 10, 1985, a failure to meet the requirements of Action Statement 2.c, Table 3.3-1, Technical Specification 3.3.1,

" Reactor Trip System Instrumentation," was id en t i f i ed . One power range excore nuclear instrumentation channel had been removed from service since 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> on April 9, 1985 for surveillance testing . The Action Statement requires either thermal power be restricted to less than or equal to 75% of rated thermal power and the reduction of the power range neutron flux trip setpoint to less.than or equal to 85% of rated thermal power within ( hours; or, the Quadrant Power Tilt Ratio (QPTR) be monitored at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> per Specification 4.2.4.2. This action was not taken by the Licansee until 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> after the excore channel was removed from service.

The cause of this event is at t rib ut ed to personnel error in that the persons responsible failed to recognize the requirement of the Action Statement. Immediate c o r r e c t iv e action was taken to ob tain a full core flux map and verify the QPTR to be within specification.

There were no adverse consequences for this event. The other three power range excore nuclear instrumentation channels were operable at all times during the event. The QPTR was verified to be satisfactory within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the excore channel's removal from service.

The Licensee has initiated the following corrective action to prevent recurrence. Surveillance Test Procedures which require entry into Action Statement 2 of Table 3.3-1 will be revised to include a precaution to alert Operations of the requirement to monitor QPTR at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> per Specification 4.2.4.2. The Licensee expects this action to be completed by July 31, 1985.

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. 'e ENCLOSURE 1 RESPONSE TO ITEM 2 VIOLATION 395/85-15-04 I. ADMISSION OR DENIAL OF THE ALLEGED VIOLATION South Carolina Electric and Gas Company (SCE&G) is in agreement with the alleged violation.

II. REASON FOR THE VIOLATION The violation is a t t r ib u t ed to procedural inadequacy in that Electrical Maintenance Procedure (EMP) 115.004, " In d iv id ua l Ce ll Ch arging Pr ocedure," failed to provide adequate guidance for electrical isolation during the recharge of in d iv id ua l battery cells. Plant personnel, who developed the procedure prior to the issuance of the Virgil C. Summer Nuclear Station operating license in 1982, viewed the single cell charger as test equipment and failed to c ons id e r the impact on Class lE Circuit independence.

III. CORRECTIVE STEPS TAKEN AND RESULTS ACHIEVED A procedure change was mad e to EMP 115.004 on May 1, 1985 which restricts the usage of the single cell charger until an a c c e p t ab l e means of insuring Class IE independence is developed.

IV. CORRECTIVE ACTION TAKEN TO AVOID FURTHER VIOLATION The May 1, 1985. restriction placed on the single cell charger is c on s id e r ed ad equa t e c o r e c t iv e action to av o id fu r th er violation.

V. DATE OF FULL COMPLIANCE SCE&G was in full compliance on May 1, 1985.