RBG-26366, Suppl 4 to Gulf States Utils Co River Bend Station Unit 1 Startup Test Rept

Suppl 4 to Gulf States Utils Co River Bend Station Unit 1 Startup Test Rept

ML20236K580
Person / Time
Site:	River Bend
Issue date:	07/28/1987
From:	Booker J GULF STATES UTILITIES CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
RBG-26366, NUDOCS 8708070172
Download: ML20236K580 (6)

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GULF STATES UTILITIES COMPANY RIVER BEND STATION-UNIT 1 i START 1IP TEST REPORT (SUPPLEMENT 4) !

28 JULY 1987 i

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8708070172 870728 l PDR ADOCK 05000458  !

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• 'STARTUP TEST REPORT (SUPPLEMENT.4)

1. The River Bend Unit 1 Startup Test Program was officially concluded on June 16, 1986. This report contains an update on the status of test exceptions which were open as of the April 23, 1987 supplement to- the Gulf States Utilities Company, River Bend Unit 1, Startup Test Report. Since the April 23rd report, no test. exceptions have been closed. A total of thirteen (13) open test exceptions remain.

Due to continued full power operations of River Bend Unit 1, many of the test exception cannot be addressed. It is . anticipated that several test. exceptions will be closed out following River Bend's first refueling outage and subsequent power ascension.-

2.1 All open test- exceptions are ' categorized as~ affecting level 2 criteria or lower. Any level I criteria failures referenced in previous. reports were downgraded to level 2 criteria as a result of appropriate engineering analysis and are considered level 2 criteria in this report. This is consistent with the treatment of all test a criteria referenced in the initial Startup Test Report. All open test exceptions were evaluated and cleared for continued full power operation.

3. Currently, .the software database necessary for completion of the remaining' test exceptions is being maintained on all ERIS computer points. As test exceptions are closed, then pertinent database-computer' points will be cleared.

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f-1- ST-1 Chemistry and Radiochemistry-TE 13:. HEPA pre-filter efficiency did not meet level 2 l acceptance criteria. Existing radionuclides levels I continue.to be insufficient to adequately measure filter efficiency. Data will be' submitted to GE for evaluation and disposition.

STATUS: Open ITE 16: Insufficient radionuclides levels to 'dete rmine off-gas pre and post treatment monitor response versus release rate. This exception is.co be resubmitted to. the FRC for review and possible acceptance.

STATUS: Open Note: This level 2 test exceptions have been evaluated as.not impacting safe, full power operation.

ST-13 Process Computer TE 12: Temperature calibration problems were discovered as a result of BOP testing. These problems are still in the process of being corrected. Testing will be completed

.upon corrective maintenance on RTD calibration problem.

Instrumentation and Controls calibration work is approximately 25% complete. This level 2 exception was evaluated as not impacting safe, full power operation.

STATUS: Open ST-22 Pressure-Regulator TE 22: Pressure regulator failed level 2 criteria for

' incremental regulation. GE has evaluated and determined insufficient data was collected to determine acceptability. This exception will require retest.

This level 2 exception has been determined not to impact safe, full power operation.

STATUS: Open Page 3 of 5

n I ST-23A Water Level Setpoint, Manual Feedwater Flow Changes TE 19: Awaiting results of feedwater study by CE to determine required modifications (if any) to conduct retest.

Retest- is required due to flow transmitters being recalibrates. This level 2 exception was evaluated as not impacting safe, full power operation.

STATUS: Open ST-25C/D Main Steam Line Flow Instrumentation-TE 3: The elbow tap flow versus delta P curves are not within

+5% of the design curves. The largest deviation is 32%.

Work is currently identified on the preventative maintenance schedule. General Electric has evaluated this data and agreed that this level 2 test exception does not impact safe, full power operation.

STATUS: Open ST-30C Recirculation System Performance TE 3: The Flow Control Valve mismatch that existed was reduced from 14% to 7% and the core and drive flow shortfalls have been resolved. GE and GSU evaluation is continuing on resolving the M ratio below design acceptance for Loop B problem. Retest will be necessary to satisfy the disposition of the M ratio problem due to the reduced Flow Control Valve mismatch. This level 2 test exception does not impact safe, full power operation.

STATUS: Open ST-74 Offgas System TE 14: This TE was created as a result of the level 2 failures resulting from the retest of TE 12. The data from this retest has been submitted to GE for evaluation and disposition. This level 2 test exception does not impact safe, full power operation.

STATUS: Open Page 4 of 5

. 1 I ST-95 Emergency Response Information System i TE 3: Module .SD-10 for performing scram timing failed. Work requests for correcting the problem have been generated.

This level 2 exception does not impact safe, full power operation.

STATUS: Open ST-100 Piping Vibration TE 16: Vibration data for MSS Points. T42 and T220 was not available due to failure of ERIS data collection panel 113. Panel 113 has been repaired. Currently verifying .

satisfactory computer point status. This level 2 test I exception does not impact safe, full power operation, f STATUS: Open TE 20' During generator load rejection (ST-27) points MSS T-42Z, T-235X, Y, & Z, & FWS T-144X failed Icvel I criteria. MSS T-42X and FWS T-144Y and Z failed level 2 criteria. No data was available for condensate test point T/S-525 since CNN-A0V 119 failed to open. This test exception is open pending retest. Computer points are available. Currently verifying satisfactory computer point status. The test data was reviewed and found acceptable for continued safe, full power operation (downgraded to level 2) by S&W/NuPE. .

STATUS: Open TE 21: Test points MSS T-200, FWS T-39, SVV T-39, and T-85 were not operable during generator load rejection. Requires repair to ERIS data collection panel 107. This work is awaiting a major outage. This level 2 test exception remains open for retest and does not impact safe, full power operation.

STATUS: Open ST-104 ESF Area Cooling 1 .\

TE 2: Measured ESF room temperature in the HPCS, RCIC, RHR A, RHR B, RHR C, exceed level 3 criteria of 90 F.

Evaluation still being performed by General Electric Engineering. This level 3 test exception does not impact safe, full power operation.

STATUS: Open Page 5 of 5

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GULF STATES : UTILITIES COMPAN1" RNER SEND STATION ' POST OFFICE BOX 220 ST. FRANCISVILLE. LOUISIANA 70775 ARE A CODE 604 635 6094 346 8651 s j i

l July 31, 1987 RBG - 26366 File Nos. G9.5, C9.25.1.5 t.

U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555_

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Gentlemen:

River Bend Station - Unit 1 Docket-No. 50-458 Enclos'ed is ' Supplement 4 to the Startup Report for River Bend Station -; Unit'1. .This report covers the period through July 28, 1987. This information is provide pursuant to Technical Specifications 6.9.1.2 and 6.9.1.3 and Regulatory Guides 1.16 and 1.68. An additional supplemental report will follow within 3 months pursuant to Technical Specification 6.9.1.3.

Sincerely,

. . W4 g J. E. Booker Manager-River Bend Oversight River Bend Nuclear Group JEB/ER / h cc: U.S. Nuclear Regulatory. Commission 611.Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 NRC Resident Inspector P.O. Box 1051 St, Francisv111e, LA 70775

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