ML19208D525
| ML19208D525 | |
| Person / Time | |
|---|---|
| Site: | National Bureau of Standards Reactor |
| Issue date: | 09/28/1979 |
| From: | Rozier Carter NATIONAL INSTITUTE OF STANDARDS & TECHNOLOGY (FORMERL |
| To: | |
| Shared Package | |
| ML19208D522 | List: |
| References | |
| TR-5, NUDOCS 7909280546 | |
| Download: ML19208D525 (5) | |
Text
National Bureau of Standards Reactor Docket #50-184 Facility License No. TR-5 OPERATIONS REPORT
- - - #27 - - -
January, 1979 - June, 1979 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, 1979 to June 30. 1979.
Section numbers in this report (such as, 7.8d(l)) correspond to those used in the Technical Specifications.
September 28, 1979 fM/<'t,fy[,
/ "M
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ROBERT S. CARTER Chief, Reactor Radiation Division 1050 292 190928C)6fg
TABLE OF CONTENTS 7.Pd(l)
Summary of Plant Operations 7.8d(2)
Unscheduled Shutdowns
/.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 Pr - r Approval by the U. S. AEC (10CFR 50.59) 7.8d(5)
Summary of Radioactive Material Released and Results of Environ-mental Surveys Performed 7.8d(6)
Summary of Significant Exoosures Received by facility Personnel and Visitors 1050 293 7.8d(1)
Summary of
- Operations During the six month period January 1,1979 through June 30, 1979 the reactor was critical for a total of 3773.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> with an energy or' gut of 37290.4 MUH.
Operations during this period were uneventful.
7.8d(2)
Unscheduled Shutdowns There were no unscheduled shutdowns this period.
7.8d(3)
Tabulation of Major Items of Plant Maintenance 1.
Replaced motor in Boral Curtain hoist.
2.
Installed new shaf t and new flex coupling on #1 Cooling Tower fan drive.
3.
Inspected shell side of HE-1A heat exchanger.
4.
Replaced impeller nut gasket on #2 Thermal Shield pump.
5.
Replaced diaphram on HEV-68 (#2 Helium Blower bypass).
6.
Replaced filter elements in the D 0 Ion Exchanger pre-filters.
2 7.
Replaced motor on #2 main D 0 pump (bearing P.M.).
2 8.
Plugged leaking tubes in the Storage Pool Heat Exchanger.
9.
All scheduled P.M. work for this period was cor7] eted.
10.
Replaced the #2 +48 volt power supply.
11.
Repaired Inverter-Diverter to eliminate a grocnded Liverter statcr.
12.
Corrected grounded condition on the Storage Pool conductivty monitor.
13.
Replaced the sub-tray amplifier assembly in the Reactor Dif f erential Temperature "B" channel temperature transmitter.
1050 294 la.
Replaced the sub-tray amplifier assembly in the Reactor Outlet Temperature transmitter.
15.
Replaced the audible alarm unit in #2 Control Room annunciator.
16.
Repaired the source holder on the first floor east wall Area Monitor.
17.
Verified and adjusted calibration of the Reactor Vessel Level indicator channel.
18.
Instrument Procedures performed:
FIA-8 Cryogenic Cooling Flow indicator.
LIA-3 D 0 Storage Tank Level indicator.
2 B TUR-1 Reactor Thermal Power recorder.
SPS-150 Emergency Standby Fan controller.
RM l-1 Building Area Radiation Monitors.
Thru l-10 RM 3-1 Secondary Coolant Radiation Monitor.
RM 3-4 Irradiated Air Radiation Monitor.
TIA 41B Reactor Differential Temperature "B" indicator.
TlA-40A Reactor Differential Temperature "A" indicator.
NC-4 Intermediate Range nuclear channel.
MC-7 6 8 Power Level nuclear channels.
19.
Engineering Changes to the facility during this period:
ECN-228 Installation of a fusing control switch & indicator to the Boral Curtain electrical circuitry.
7.8d(4)
Tabulation of Major Changes in the Facility and Procedures, and the Test and Experiments, Carried Out Uithout Prior Approval by the U. 5. AEC (10 CFR 50.59) 7.8d(5)
Summary of Radioactive Paterial Released and Results of Environmental Surveys Performed.
Two hundred and twenty-nine (229) curies of tritium and 293 curies of Argon-41 were released as gaseous waste, while 1101 milli-curies of tritium and 82 microcuries of other 6-y enitters were released in to the sanitary sewer.
) h,) ]
.) q 7L 'l
Environmental samples of the streams, wells, vegetation and/or soil, and air showed no significant changes.
7.8d(6)
Summary of Significant Exposures Received by Facility Personnel and Visitors 1.
No signiffcant exposures were received by any visitors.
2.
No one at the facility received a significant exposure for this period.
1050 296 e