IR 05000413/1990022

Insp Repts 50-413/90-22 & 50-414/90-22 on 900709-13.No Violations or Deviations Noted.Major Areas Inspected:Records Review of Maint Activities Following 5-yr Insp of Emergency Diesel Generator 2A & Review of Test Procedures

ML20058P879
Person / Time
Site:	Catawba
Issue date:	07/30/1990
From:	Belisle G, Taylor P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML20058P877	List: IR 05000413/1990022 ML20058P876
References
50-413-90-22, 50-414-90-22, NUDOCS 9008210005
Download: ML20058P879 (4)

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C Miu UNITED STATES a"o

, , NUCLEAR REGULATORY COMMISslON

[ REGION 11 ,

y a 101 MARIETTA STREET. j

• f TLANTA, GEORGI A 30323 g

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Report Nos.: 50-413/90-22 and 50-414/90-22

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Licensee: Duke Power Company 422 South Church Stree Charlotte, NC 28242 Docket Nos.: 50-413 and 50-414 License Nos.: NPF-35 and NPF-52 Facility Name: Catawba 1 and 2  ;

Inspection Conducted: July 9-13, 1990  ;

Inspector: N 4 k be- 7/$0/70 P. A. Tayldr , Date Signed Approved by: d'I ~7 < - r ~//.?t //d C A. Belisle, Chief 7a'te' 51gned '

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Test Programs Section l Engineering Franch I Division of 'eactor. Safety

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SUMMARY

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Scope: ,

l This routine, unannounced inspection was conducted in the areas of records

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review of maintenance activities following the five year inspection of emergency diesel generator (EDG) 2A; and a review of test procedures arJ the witnessing of tests performed on EDG 2A following the maintenanc "

Results:

In the areas inspected, violations or deviations were not identifie ?

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9008210005 900731 PDR Q ADOCK 05000413 PDC

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REPORT DETAILS t a

!  ! Persons Contacted Licensee Employees i

• J. Ferguson, Shift Operation Menager  !

• C. Hartzell, Compliance Manager

• R. Herring, Test Engineer Performance Group- .

• V. King, Compl' ace Engineer D. Lipe, Mechanical Maintenance Supervisor i R. McElavee, Production Specialist Maintenance Engineering Services ,

• Z. Taylor Test Supervisor Performance Group Other licensee employees contacted during this inspection included craftsmen, engineers, operators, mechanics, and technician NRC Resident Inspectors _

N. Orders, Senior Resident Inspector J. Zeiler, Resident Inspector

• Attended exit interview EDG-2A Maintenence ud Testing Activities (61701)- Maintenance Review

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During the current refuelin'g outage, the licensee completed the five year inspection of Unit 2, EDG-2 This inspection of diesel '

generator components after five. years of ooeration was developed by -

the Transamerica Delaval (TDI) Owners Group. This inspection is identified as major maintenance and included a detailed examination ,

of such components as the bngine turbocharger, bed plate, main '

bearings, and a disassembly of.four engine cylinders for detailed inspection of the piston, piston rings, cylinder liners, and other i connecting components. The inspector compared the licensee's work i schedule, work requests issued to conduct EDG-2A component inspection with the TDI Owners Group maintenance and surveillance program and

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noted-that components selected were in agreement with the TDI Owners

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o Group program.

! The inspector held discussions with maintenance personnel con 08. ting :

I the maintenance on EDG-2A and reviewed the- following records to -

assess the inspection findings, verify that appropriate retests had v l been assigned and the completeness of these records:

WR-001674, UT connecting rod bolts,. babbit flake inspection an .'

cylinder inspection l

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WR-001676, inspection of turbocharger intercoolers f WR-00167S, Disassemble, inspect air start block valves WR-001682, Disassemble, reassemble diesel engine piston,  !

cylinder liner and connecting rod for cylinders 2L, SL, 2R and ,

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WR-006668 Inspect exhaust manifold to cylinder head flange ;

i WR-001672 Disassemble, clean and reassemble jacket water and l lube oil heat exchangers ,

The above review. indicated that no significant deteriorating of ,

components has taken place and the wear on engine parts is normal for the number of operating hours on the engine (703).

b. Procedure Review and Test Witnessing The licensee planned tests to restore EDG-2A to operability status is ,

addressed in the following plant procedures:

MP/0/A/7400/13, dated June 7, 1990 Diesel Engine Break-in After Major Maintenance -

The purpose of this test is to conduct slow starts of the EDG and run unloaded for shcrt periods of time (i.e., 5 minutes, 15 minutes, and I hour) to inspect the bearings for excessive ,

heating. The engine is then loa'ded incrementally at hourly

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intervals starting at 1100-1200KW through 4200KW, A three-hour run is also performed at the continuous rating (5600KW). During EDO operation, all operating-parameters art recorded and the diesel is visually inspected for oil leak Additionally, cylinder firing pressures and temperatures are measured and fuel rack position is recorded. Following these break-in runs, detailed. inspections, measurements and torque checks of bolted

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corpponents are conducte PT/2/A/4350/15A, dated May 3,1989 Diesel Generator 2A Periodic

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Tes This test procedure performs several of the 18 month Technical Specification surveillances which include; single load rejection, full load reject at continuous rating, 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> endurance run at the continuous rating, test of maintenance mode lockout ,

features, test of automatic diesel generator trips and a start *

of the EDG using an auto-start signa PT/2/A/4350/02A, dated- December 15, 1988, Diesel General 2A Operability Tes :

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This test procedure contains the 31 day Technical Specification surveillance requirements for ensuring that the diesel generator is operable. The tests performed include starting and loading the EDG to its continuous rating for one hour and verification that the fuel oil tanks are at their required level The review of the above maintenance and periodic tests procedures indicated that: aapropriate levels'of management review and approval had been conductec t the procedures contained prerequisites, initial system conditions and precautions to be established prior to and Technical Specificatiori requirements conducting) the test; (4.8.1.1.2 were incorporated into the periodic tes ]I The inspector witnessed the following MP/0/A/7400/13 Diesel Engine Break-in Tests; slow start the diesel engine unloaded to its rated speed for 5 minutes, 30 minutes, and I hour. Following these tests, j load the diesel engine to 1110-1E00KW for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. During these tests, diesel engine parameters we;*e monitored and data recorded. An inspection was conducted between each of the break-in runs on the main bearings and connecting components for excessive heating. Data on diesel engine parameters and reported inspection results indicated normal operation condition for EDG-2 Within the areas inspected, violations or deviations were not identifie !

3. Exit Interview

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The in'spection scope and results were summarized on July 12, 1990, with L those persons indicated in paragraph 1. The inspector described th'e areas ,

inspected and discussed in detail the inspection results. Proprietary !

infonnativn is not contained in this repor Dissenting comments were not '

received from the license '

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