ML20080K478

Operations Rept,Jan-June 1983

ML20080K478
Person / Time
Site:	National Bureau of Standards Reactor
Issue date:	09/08/1983
From:	Rozier Carter NATIONAL INSTITUTE OF STANDARDS & TECHNOLOGY (FORMERL
To:	Thomas C Office of Nuclear Reactor Regulation
References
NUDOCS 8309290170
Download: ML20080K478 (6)

Text

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i NATIONAL BUREAU OF STANDARDS REACTOR Docket # 50-184 Facility License No. TR-5 OPERATIONS REPORT I - - - #35 - - -

January, 1983 - June, 1983 This report contains a summary of activities connected with the operations of the NBSR. It is submitted in fulfillment of section 7.8d of the NBSR Technical Specifications and covers the period from January 1, I 1983 to June 30, 1983.

Section numbers in this report (such as, 7.8d(l)) correspond to those used in the Technical Specifications, i

September *. 1983

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ROBERT S. CARTER Chief, Reactor Radiation Division t

I 8309290170 830908 l PDR ADOCK 05000184 R PDR

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TABLE OF CONTENTS 1

7. 8d (1) Summary of Plant Operations 7.8d(2) Unscheduled Shutdowns

7. 8d (3) Tabulation of Major Items of Plant Maintenance 7.8d(4) Tabulation of Major Changes in the Facility and Procedures, and the Test and Experiments, Carried Out Without Prior Approval i

l by the U. S. AEC (10 CFR 50.59) 7.8d(5) Summary of Radioactive Material Released and Results of Environ-mental Surveys Performed

7.8d(6) Summary of Significant Exposures Received by Facility Personnel 2

and Visitors I

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7. 8d (1) Summary of Plant Operations During the period January 1, 1983 through June 30, 1983 the reactor was critical for 3695 hours0.0428 days <br />1.026 hours <br />0.00611 weeks <br />0.00141 months <br /> and the energy generated was 36305 MWH. All reactor operations were routine and uneventful.

A program for modernization of the Reactor Console is continuing.

7. 8d (2) Unscheduled Shutdowns There were two unscheduled shutdowns during this reporting period.

1-13-83 Manual scram when operator struck the Scram button while opening a recorder door to mark chart. Returned to power immediately.

3-23-83 Low flow Scram during commercial power interruption.

Returned to power immediately.

7.8d(3) Tabulation of Major Items of Plant Maintenance

1. Replaced Reg Rod with spare unit.

2. Reset #1 Shim Arm clutch gap.

3. Replaced drive gear in #3 Shim Arm Indication Unit.

4. Installed new bearings in #1 primary pump motor.

5. Replaced MCP Motor #4 with MCP Motor #1.

6. Changed diaphragm (twice) on DWV-184.

7. Replaced orfice plate low predsure sensing line of FIA-5 (purification flow instrument).

I 8. Installed vacuum system and filter on fuel cutting saw.

9. Repalced piping between COV-1 and COV-2.

10. Removed KWV-13 Air Operator Valve (replaced in July 83) .

11. Changed resin in Thermal Shield #1 I.X. and #2 I.X.

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12. Changed Storage Pool I.X. resin, prefilters (twice) and after filters.

13. Adjusted #2 Cooling Tower fan motor vibration switch.

14. Replaced bearings in EF-3.

15. Replaced batteries on Diesel Generator "A".

16. Replaced time delay relay on #4 Secondary Pump.

17. Replaced Amplifier & recalib. TIA-40A.

18. Replaced Amplifier in Ph recorder

19. Reseated shunt pin connection on NC-3 and 4 to correct remote console indication.

20. Replaced Square Root extractor on BTUR system.

21. Repaired Amplifier on Ucrmal Air Monitor Channel.

22. Re'=librated Heat Exchanger outlet temperature channel (TIA-4) .

23. Repaired Storage Pool Cooling Water Flow Transmitter (FIA-13) &

Calibrated Channel.

24. Calibrated Storage Pool Ion Exchanger Flow Channel (FIA-14) .

25. Replaced Amplifier to Console Readout (RM3-5).

26. Replaced Chart Drive Motor on AT recorder (TR-1).

27. Replaced wire nut connection with soldered connections on Cooling Tower controls (LIC-9).

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28. Engineering Changes during this period:

ECN 268 Install Transpac Pwr. Sup. to NC-2 ECN 277 Replaced the BTUR and Outlet flow recorders (2 of the 3 recorders on ECN) i

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29. Instrument Procedures performed:

l Secondary Coolant Radiation Monitor RM3-1 NC-7 Nuclear Power Range Channel NC-8 Nuclear Power Range Channel RM1-1 thru 10 Area Monitors RM3-4 Irradiated Air Radiation Monitor NC-4 Nuclear Intermediate Range Channel RM4-1 Stack Air Radiation Monitor

' FRC-3 Rx Outer Plenum Flow FRC-4 Rx Inner Plenum Flow TIA-40A Rx Delta Temperature SPS-150 Emergency Standby Fan Controller 7.8d(4) Tabulation of Major Changes in the Facility and Procedures, I and the Test and Experiments, Carried Out Without Prior Approval by the U. S. AEC (lb ZFR 50.59) .

None this reporting period.

7. 8d (5) Summary of Radioactive Material Released and Results of i Environmental Surveys Performed.

Two hundred and ninety-five (295) curies of tritium and 267 curies of Argon-41 were released as gaseous waste, while 1.4 curies of tritium and 25 millicuries of other B-y emitters were released into the sanitary sewer.

Environmental samples of the streams, wells, vegetation and/or

! soil, and air showed no significant cha'nges.

! 7.8d(6) Summary of Significant Exposures received by Facility Personnel i

and Visitors.

1. No significant exposures were received by any visitor.

2. One facility (non-operations) personnel received a significant exposure during this period of 1.70 rem.

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