05000416/LER-1983-179, Updated LER 83-179/03X-1:on 831105,Div II Diesel Generator Shut Down Upon Discovery of Fuel Oil Return Line Leak.After Repair During Restart,Generator Tripped Due to Isolation of Fuel Supply Valve F016B.W/840308 Ltr

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Updated LER 83-179/03X-1:on 831105,Div II Diesel Generator Shut Down Upon Discovery of Fuel Oil Return Line Leak.After Repair During Restart,Generator Tripped Due to Isolation of Fuel Supply Valve F016B.W/840308 Ltr
ML20087G578
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 03/08/1984
From: Byrd R, Dale L
MISSISSIPPI POWER & LIGHT CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-840138, LER-83-179-03X, LER-83-179-3X, NUDOCS 8403200064
Download: ML20087G578 (4)


LER-2083-179, Updated LER 83-179/03X-1:on 831105,Div II Diesel Generator Shut Down Upon Discovery of Fuel Oil Return Line Leak.After Repair During Restart,Generator Tripped Due to Isolation of Fuel Supply Valve F016B.W/840308 Ltr
Event date:
Report date:
4162083179R00 - NRC Website

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.Q lOn 11/4/83 during a 7 day maintenance run, the Div. II Diesel Generator l o lwas shutdown upon discovery of a fuel oil return line leak. Upon j o go l l restart, after repair of the fuel leak, the D/G tripped due to isolation l

t i s ; lof fuel supply valve FOl68. Per R.G.1.108, theser were not valid f ailures) o s Ibecause the diesel ran for longer than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> at greater than 50% load l

[T[i] land due to operator error. The requirements of T.S.3.8.1.1 were met.  !

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CAUSE DESCR.* TION AND CORRECTIVE AC760fe5 h g ] (The fuel line leak was a result of accidental damage to the tubing by l g ggpersonnel. The fuel line was replaced. The cause of the failure to re- l

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Page 2 of 2 Supplementary Information to LER 83-179/03 X-1 Mississippi Power & Light Company Grand Gulf Nuclear Station - Unit i Docket No. 50-416 Technical Specification Involved: 3.8.1.1 Reported Under Technical Specification: 6.9.1.13.b Event Narrative On November 4, 1983, at approximately 2345 hours0.0271 days <br />0.651 hours <br />0.00388 weeks <br />8.922725e-4 months <br />, while operating the Division 2 Diesel Generator for a seven day test run, the engine was shutdown upon discovery of a fuel leak on the fuel oil return line. The fuel line was replaced and the diesel generator was restored to service at approximately 0220 hours0.00255 days <br />0.0611 hours <br />3.637566e-4 weeks <br />8.371e-5 months <br /> on November 5, 1983.

At 0245 hours0.00284 days <br />0.0681 hours <br />4.050926e-4 weeks <br />9.32225e-5 months <br />, the diesel generator failed while. attempting to restart the engine following the above repair work. A Limiting Condition for Operation (LCO) was entered ogsin under Technical Specification 3.8.1.1. The immediate investigation found that the fuel oil supply valve from the -fuel tank which was isolated upon Jiacovery of the leak had not been realigned properly. The immediate actions taken were to perform the proper system lineup per the System Operating lustructions and to counsel operators involved.

The cause of the fuel line leak is attributed to damage to the tubing by personnel working in the area.

An Operations section directive is being revised to ensure that deviations in valve positions due to emergency situations are documented and controlled.

The directive will require affected .alves to be logged by both number and description and clearance tags placed on the valves as soon as possible. The revised directive is expected to be implemented by March 20, 1984.

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.. . _ _ _ _ _______________-______-_-_____-____x___------_--__:--_-_a

E MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B O X 16 4 0. J A C K S O N, MIS SIS SIP PI 3 9 2 0 5 34 MAR 16 j@c:3Q1984 NUCLE AR PRODUCfrON deb ARTMENT U.S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

Dear Mr. O'Reilly:

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-13 File: 0260/L-835.0 Update Report - Division II Diesel Generator Shutdown Due to Fuel Line Leak LER 83-179/03 X-1 AECM-84/0138 This letter submits an update to a previous .eport subnitted on December 6, 1983. The event for which the report was submitted occurred on November 4, 1983, during a seven day maintenance run, when the Division II Diesel Generator was shutdown upon discovery of a fuel oil return line leak.

Upon restart, after repair of the fuel leak, the diesel generator tripped due to isolation of fuel supply valve F016B. The requirements of Technical Specification 3.8.1.1 were met. This was reported pursuant to Technical Specification 4.8.1.1.3. Per Regulatory Position C.2.e(2) and (3) of Regulatory Guide 1.108 these were not valid failures.

Corrective action associated with the failure to restore the fuel supply valve (F016B) after repair of the damaged fuel oil return line is expected to be complete by March 20, 1984 This is a final report. Attached is LER 83-179/03 X-1 with Supplementary Information.

[ Yours truly, l -

b A J. n, L. F. Dale Manager of Nuclear Services l EBS/SHH
rg Attachment cc: See next page OFFICI AL COPY' Member Middle South Utilities System

AECM-84/0138 Page 2 MISSICOIPPI POWER O LICHT CGidPANY cc: Mr. J. B. Richard (w/a)

Mr. R. B. McGehee (w/o)

Mr. T. B. Conner (w/o)

Mr. G. B. Taylor (w/o)

Mr. Richard C. DeYoung, Director (.r/a)

- Office of Inspection & Enforcement i U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Document Control Desk (w/a) l U. S._ Nuclear Regulatory Commission Washington, D. C. 20555

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