ML20134D961

Monthly Operating Rept for Jul 1985

ML20134D961
Person / Time
Site:	Robinson
Issue date:	07/31/1985
From:	Morgan R, Scott A CAROLINA POWER & LIGHT CO.
To:	Taylor J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
RNPD-85-2118, NUDOCS 8508190487
Download: ML20134D961 (4)

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Pue 3 of 3 UNITSHUTDOWNS AND POWER REDUCTIONS DOCKET NO.

050-0261 UNIT NAME H. B. Robinson d

DATE OR-02-R5 COMPLETED RY AM e, F <:< nee REPORT MONTil Julv TELEPHONE tann ant _ AOA

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Cause & Corrective

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jg5 Event EI a

Action to cs E 5

j;gg Report 't

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26.4 B

1 ZZ ZZZZZ Ramping down to 10% power to repack feedwater regulating valves.

0702 850705 F

16.23 3

LER 85-15 1A INSTRU While ramping down for :naintenance on the feedwater regulating valves, the reactor tripped on "C" steam genera-tor low-level coincident with a steam flow / feed flow (SF/FF) mismatch. The low-1cvel was due to a blockage in a

. level transmitter. The SF/FF mis-match was due to a problem with the operation of a steam valve to the moisture separator reheater causing a steam spike. The level transmitter sensing line was flushed to remove

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the blockage, and a transformer was replaced in the valve control circuit I

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4 F: Forced Reason:

Method:

Exhibit G. Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance of Test 2-Manual Scrarn.

Entry Sheets for licensee C-Refueling 3-Automatic Scram.

Event Report (LI:R) Fde (NUREG-D Regulatory Restriction 4-Other (Explain) 0161) ^

E4perator Training a license Exanunation e

F-Adnunistrative 5

G-Operational Ewer (Explain)

Exhibit I - Same Source 19/77) llother (Esplain),

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Cp&L Carolma Power & Light Company

- amenneren ROBINSON NUCLEAR PROJECT DEPARTMENT POST OFFICE BOX 790 j

HARTSVILLE, SOUTH CAROLINA 29550 AUG 101985 Robinson File No:

15505 berial:

RNPD/85-2118 Mr. James M. Taylor, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET No. 50-261 LICENSE NO. DPR-23 l

MONTHLY OPERATIONS REPORT

Dear Mr. Taylor:

l In accordance with Technical Specification 6.9.1.c for the H. B. Robinson Steam Electric Plant, Unit No. 2, Carolina Power & Light Company herewith submits the report of operation statistics and shutdown experience for the month of July, 1985.

Very truly yours, bh4 /

i R. E. M an General Manager j

H. B. Robinson S. E. Plant DCS/sdm 1

Enclosure cc:

R. A. Hartfield (2)

J. N. Grace (1) l l

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