ML20086S168
| ML20086S168 | |
| Person / Time | |
|---|---|
| Site: | University of Virginia |
| Issue date: | 02/16/1984 |
| From: | Farrar J VIRGINIA, UNIV. OF, CHARLOTTESVILLE, VA |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8403010397 | |
| Download: ML20086S168 (10) | |
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UNIVERSITY OF VIRGINIA f .Am 1 del'ARTSIENT Or NUCLEAR ENGINEERING AND ENGINEERING PIIYSICS NUCLEAR REACTOR TACIIITY k I ) SCIIGOL OF ENGINEERING AND APPLIED SCIENCE a r CIIARLOTIT.SVILLE, VA 229l Tciephone: 801 924-7 36 February 16, 1984 Division of Reactor Licensing U.S. Nuclear Regulatory Commission Office of Regulation Washington, DC 20545 Re: Docket No. 50-62, License No. R-66 Decket No. 50-396, License No.'R-123 .
Gentlemen:
We hereby submit, as required by Section 6.6.2 of the Technical Specifications, our annual report of the operations of the University of Virginia Reactor (UVAR),
License No R-66, Docket No. 50-62 and the CAVALIER Reactor, License No. R-123, Docket No. 50-396 during the period January 1,1983 through December 31, 1983.
A. UVAR Reactor The UVAR reactor was opercted during the year as follows:
Hours Operated MW Hours First Quarter 1145 9232.44--
Second Quarter 906.5 1610.08 Third Quarter 430 357.95 Fourth Quarter 1074 1878.62 3555.5 6079.09 1.0 Rod Drop Tests and Visual Inspection Rod drop tests were made on the UVAR reactor as follows:
Magnet Rod Magnet Free Total Rod Current (ma) Position (inches) Release (msec) Drop (msec) (msec)
-Date 4 YF83 1 160 26 21 558 573 2 160 26 18 473 491 3 70 26 49 488 537 7-12-83 1 155 26 14 480 494 2 160 26 34 478 512 3 60 26 38 558 596
.8- 30-83 1 160 26 16 479 495 2 160 26 34 478 512 3 60 26 49 603 652 The red drop times continue to be within the limits required by the Technical Speci fications .
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Division of Reactor Licensing Page 2 February 16, 1984 The UVAR control rods were visually inspected during the year. The following is abstracted from the reactor log book.
- 7-11-83 Rod #1 - Inspected under approximately 2 feet of water. 0.95 inch gauge passes easi?y.. Some rub marks noted.
Rod #2 - Inspected under approximately 2 feat of water. 0.95 inch gauge passes easily. Some rub marks noted.
Rod #3 - Inspected under approximately 2 feet of water. 0.95 inch gauge passes easil/. Rub mark noted.
Regulating Rod- Inspected under approximately 2 feet of water. Rub marks noted near top'a;id on one side. 1.00 inch gauge passer easily.
2.0 Maintenance Operations The following maintenance wcs nerformed on the UVAR system during the calendar year 1983.
1-7-83 Added 2 cu. ft, of cation resin and 2 cu. ft. of anion resin to the demineralizer system.
1-20-83 Servo System not functioning properly - replaced tubes in controller -
checks ok.
2-8-83 Power Range Channel #1 erratic, found radiation damaged connectors and cable on VIC. Replaced detector with We.stinghouse CIC and replaced cable and connectors. Checked out ok.
3-2 83 Control rod #3 drops during operation. Replaced magnet, tube nut, and lower bearing on drive system. New magnet much stronger. Replaced potentiometer to limit current to 0-80 mamps.
3-29-83 LPower Range Channel #2 reading low --re'placed detector, cables, and connectors.
Checks out ok.
4-4-83 Constant Air monitor did not respond to background on check source.
Replaced high voltage. oscillator transistor. Checked out ok.
4 8 3 Room. Argon Monitor-reading low, no response to check source. Replaced geiger tube. Checks out ok.
4-29-83 Power Range Channel #1 needs almost constant adjustment. Replaced detector and rebuilt connectors. Checks.ok.
Pc rer Range Channel #2 reading erratic. Replaced detector. Checks ok.
5-3-83 Power Range #1 - noise spikes in system. Replaced detector and installed new connectors. Checks ok.
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' February 16, 1984 5-10-83 Cooling Teider - drained and cleaned entire cooling tower.
6-7-83 Unable to keep pool temperature down - cleaned and flushed secondary side of heat exchanger.
- Alam Panel neset switch wouldn't always reset panel. Replaced switch.
Checks-ok.
7-18-83 Power set potentiometer on servo-system broken - replaced potentiometer cf.ecks out ok.-
7-19-83 Demineralizer Room Monitor - erratic signal caused by high humidity in room. Sent to factory for repair and calibration-switched with Hot
' Cell monitop. Responds to calibrated source.
9-20-83 Intermediate Channel - unable to calibrate - replaced Modulator L.
. Checks out ok.
9-30-83 AT System '- Intennittant jumps while at power. Found twisted off wire on 3 leg RTD. Sleeved wire and installed new amphenol gold pin connectors.
10-31-83 Constant Nir Monitor - Loss of signal. Replaced transistor board with another calibrated board and mpaired bad transformer. Checks out ok.
11-13-83 AT system -' sudden changes in reading of - 1 F. Replaced ele'ctronics with CALEX type 165 bridge ser.uor. Checks out ok.
.12-7-83 .Rcacter face monitor. Noisy signal - switched with demineralizer room monitor and calibrated. Checks out ok.
3.0 Operating ' Procedures The UVAR standard operating procedures were extensively revised and expanded during the year.
Febrcary 1983 --Section 10 on Radiation Control Procedures was completely rewritten and upgraded.
June .1983 (a). Section 5 on operating procedures was completely rewritten and expanded to include start-up and shutdown of the niactor, core configuration changes, determination of shutdown margin and excess reactivity, xenon conditions and control rod calibration requirements.
(b) Section 4 concerning checklists was' upgraded.
(c) Section 6 on expedmental handling and Section 7 on system calibration
.and maintenance was revised.
(d) ~ Section 11 on abnormal condit'ons was revised.
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Divisisn of Reactor Licensing Page 4 February 16, 1984 September 1983 - Section 4 on checklists and Section 6 on Experimental handling were completely rewritten and expanded.
December 1983 - Section 11 an abnormal condition was expanded to include items from Section 9. Sections 12 & 13 were revised.
These changes were reviewed and approved by the Reactor Safety Committee.
4.0 Experiments A broad program of activation analysis work was done during the year for the Departments of Nuclear Engineering and Engineering Physics, Chemistry, Radiology and the Clinical Chemistry Laboratory of the U.Va. Hospital.
A continuing program of tobacco research was performed for the Philip Morris
. Company.
- A series of experiments were performed during the year for the Electric Power Research Institute ir.volving radiation damage studies of pressure vessel samples.
10 different capsules were run during the year.
. A series of neutron- radiography experiments were performed during the year utilizing the. neutron beam ports.
The south tangential beam port facility was used during the year to measure
. photo-fission cross sections utilizing a centrifuge.
< .The following Academic Institutions utilized the facility for activation analysis experiments.
- 2) . Piedmont Comunity College 6) Environment Science Lab, U.Va.
- 3) Lynchburg College
- 7) Mary Washington College
- 4) r.oacoke College 5.0 Surveillance Requirements a) The following tests were performed on a monthly. basis as required by the Technical Specifications.
Operational checks of the ventilation duct, personnel door, truck door and
. emergency exit. cover.
b) The ~following tests were perfonned at intervals not exceeding 6 months.
Visual inspection of gaskets on personnel door, ventilation duct, and truck door.
Calibration of Source Range, Intermediate Range, Power Range, Linear Power, Core Gamma Monitor, Bridge Monitor, Reactor Face Monitor,' Duct Argon Monitor Constant Air Monitor, Pool Level Monitors, Pool Temperature Monitors, Core Differential Pool Temp. and Primary Flcw. '
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- c)/ The~ daily _ checklist, which is completed when the reactor is to be operated,
~ provides for. checks.on all of'the required scram systems associated with the reactor.
1 cd) The emergency cooling system was tested during the month of September,' 1983.
. , _ thz results are as follows:
S.E. Tank S.W. Tank Required Flow, gal / min > 11.0 11.5
.f 9.-26-83 Actual Flow, gal / min > 12.5 13.2
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The flow continues to be greater than that required by the Technical Specifications.-
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Data on all of these tests and calibrations is on file at the facility.
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e) Pool !!ake-up_.
During the. calendar.yearc1983 make-up water to the pool averaged 75 gal / day.
6.0 Unp'anned Shutdowns
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. Following is a list of unplanned shutdowns 'on the-UVAR reactor during the calendar year.1983.
_ l-10 Scram - . Loss;of secondary console power.
2-14-83 Scram - Noise in Reactor Face Radiation monitor.
2-21-83' . Manual scram by operator . Felt sick'at console.
- 3-8-83~.
, -Scram: . Reactor, Bridge Monitor-experiment brought near surface of peol.-
3-10-83' Scram -iLoss of building power._
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- 3-23-83' ' Scram --Loss of building power.
3-25-83. Scram - Loss.of building power.
Scram - Noise in power range channel #2.
. .~ 4-2-83 Scram - Noise in range switch. ,
2 4-7-83 ; Scram -High ~ reading on Power Range #1.
4-20 Scram - Noise '.in Power Range #2.-
23-83 Scram - Noise in Power Range #1.
'4-26-83 Scram --Noise n Power Range #1.
5-2-83 Scram - Noise _in-Power Range #1. ;
5-3-83 Scram ' ' Noise in. Power Range #1.
~, , 5-11-83: ' Scram ~ Noise in Range Switch. -
19 Scram - Loss- of building power.
e 5-25-83' Scram - Noise from rod drive switches. _
29-83 ~ Scram - Loss of Building Power
- 7-6-83L Scram -. Loss of Building Power-
'7-13-83 Scram - High Pnwer in 200 kw range
.7-14 . Scram:- Noise in Console
'7-17-831 Scram - High~ Power _in' 200 kw range-during training session.
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7-19-83 Scram' -High' power in 200 kw range during training session.
7-21 Scram - High power in 200 kw. range during training session.
77-21 Scram - Loss of bullding power.
26-83 -- Scram - Noise in power range #2.
7-27-83 Scram - High Power Scram - range switch in 200 kw position during . training.
~ Scram - Primary Pump ~ tripped.- power at approximately 300 kw.
Scram - Short period while moving neutron source near detector.
. 8-2-83 Scram - Operator error - forgot to move range switch when going past 200 kw.-
Scran - Loss of building power.
4-83 Scram - Intermediate range period - placed in test position for training. "
S-10-83. Scram - Noise when replacing bulb in fire alann control unit.
8-23-83 . Scram - Loss of building power.
.11-29-83 Scram - Noise in Power Range #2 12-05.83 . Scram - Noise in. Power Range #2 42-07-83 - Scram - Noise in Reactor Face Monitor.
I B. CAVALIER Reactor -
During the calendar year 1983 the CAVALIER reactor was' operated as follows:
Hours Operated - Watt-Hours First Quarter 5 13.0 Second Quarter 2.25 ?. 0
- Third Quarter. 7.0 11.7.
Fourth Quarter ..
13.5 31.93 TOTAL-- 27.75- MDIT 1.0 : Rod Drep Tests Rod drop tests performed-on the CAVALIER reactor .during the year are listed-q .below.-
, Position Magnet Free Total-l bate' - 4 Rod :(inches). Volts Release (msec) . Drop (miec) Drop-(msec) 2-16-83; 1 26 35 45 472 517 2< 26' 35 436 483
/3 26 35 94 456 550 4 26' 35 77 .437 - 514-6-30 1. .26 35 90 475 565
-2 l 26 35 -39 - 440- 479
- 3 -
26 35 89 . 457 546
- 4 ~ ;26 .35 86- - 439 '- 525 10-21 1: 26 35' :96 462 558
- ' 2- 26- 35~ 25 454- - 479
- 3. .26: '35 86 466 552
- 4. -26 35- 63 452 515
.The, rod. drop times continue to be within the limits set by the Technical Specifications.
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m Division of Reactor Licensing
~ Page 7 February 16, 1984 2.0: Operating Procedures and Technical Specifications e fio changes were made in the CAVALIER Standard Operating Procedures during the calendar year 1983.
A change to the , Technical Specifications for the CAVALIER reactor was approved by the NRC on October 27, 1983. The requirement of being subcritical with any 3 rods withdrawn was deleted from Section 3.2 and Section 5.1 was amended concerning.the description of the fuel elements used in the reactor.
3.0 Maintenance The following maintenance was performed on the CAVALIER system during the calendar year 1983.
m 8-31-83 Rod position indication' not functioning properly. Found corrosion ahd cold solder joint. Repaired-checked ok.
12-20-83 Log G channel - scrans on period trip at approximately 1 watt of power replaced regulator on power supply - checks ok.
A preventive maintenance program was begun during the year to replace all of the module connectors on the nuclear instrumentation drawers. This work will continue into 1984.
-4.0 Unplanned Shutdowns The following unplanned shutdowns occurred on the CAVALIER reactor during the calendar year 1983.
7-20-83 Scram - electrical noise 15-83 . Scram - electrical noise 12-1-83 -Scram - electrical noise 12-15-83 Scram - electrical noise 5.0 Surveillance Requirements The following tests and calibrations were performed on the CAVALIER system during the calendar year 1983 as required by the Technical Specifications, a) The following tests were conducted at intervals not exceeding six months.
Calibration of source range channels, Log N channel, Log G channel, Linear Power Channel, pool level monitor, radiation monitoring system and boron concentration in ARIS system.
All of these tests and calibrations were within limits required by the Technical Specifications..
b) . The following tests were conducted at intervals not exceeding twelve months.
- 1) The control rod worths were measured on September 1983 with the following results. 1 Rod Worth 1 0.825% ak/k 2- 0.826% ak/k 9
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- Rod ' Worth 3 0.826% ak/k 4' O.75% ak/k Shutdown margin = 1;75% ak/k Excess reactivity = 0.65% ak/k
- 2) A flow test of. the ARIS system was performed on May 9,1983 and it took 32 seconds to drain the tank which is well below the required time of approximately 1 minute.
c) *lhe daily checklist, which is c'ovpleted when- the reactor is to be operated, provides for checks on all of.the required scram syst' ems associated with the reactor.
Data on all of these tests and calibrations is on file at the facility.
C. . Health Physics a) Atmospheric Release
-The following effluent was. released to the atmosphere during the calendar year 1983 as a result of reactor operation.
(AR4I) 8.75' curies ~ based on conservative calculations.
'b) ' Solid Waste -
During the calendar year 1983 approximately 68.5 cubic feet of solid waste was shipped .from the reactor facility by Teledyne Inc. The activity of the waste was as follows:
. Isotope Activity (millicuries) 22 '
-Na 0.001 24 Na 7.1 32 P 0.1 38 C1 0.016 42
.X 0.001 Mr.54 0.510
'Cr51 4.508 ,
S8 Co 0.001 60 Co 1.334 65 Zn 0.201 82
.' B r 0.015
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Isotoper Act'vity (millicuries)
Mo# 0.010 H5 Cd 30.00 I I3I 0.001 TOTAL 43.798. millicuries
.c)- Liquid Waste . .
Liquid waste from the regeneration of the demineralizer system was released during the ' year and diluted with water from the hold-up . pond.
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Activity (microcuries)' Volume (gallons)-
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First Quarter 92.5 1,515,162-Second Quarter 620.4 6,068,866'
, Third Quarter 117.0 869,502
' Fourth Quarter- 542.9 2,283,800
- TOTAL ,,T/2~.Y 10,737,330 The'~ average ,pecific activity released was 3.38 x 10-8 pci/ml-2;0 Enviromental MonitoHng. . .
!During the year a representative of the Environmental Health and Safety Office
- took air and water samples both eat the' facility and outside_the site boundary. The fol!owing' table lists these locations.and the~ specific activitiesJobtained from
.these samples.
, + Location Sample Specific Activity (average of-all semples)
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- Reactor Facility. water ;4.10 x 10 f3uci/ml E -
. air uCi/cc Filter Plant: water 2.86 x 10- uci/ml
~8.82x10$3 ai r - uCi/cc
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- Barracks ~ Road waters ai r.
'7.02x10f3 2.87 x 10-
- uci/ml 9.96 x 10- uCi/cc 3.0 ': Personnel Monitcring .
During the -calendar yearil983 approximately 96 personnel, including faculty, l staff and students were' monitored b.y, film' badges supplied by the R.S.. Landauer Co.
^ The highest exposurts .were by three staff. members. directly involved with the Y t operation of: the facility and the handling of samples used in activation analysis.
- Whole Body Dose Extremity Dose
' ' 3090.
Individual' A ~ 620 mrem
' -- Individual B-- ' 390 mrem 850-Individual 1 C ~ 330 mrem 2490 m[
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- February 16,'1984 I During the year the facility 'had 2291 visitors. . These visitors wem monitored l with direct reading dosimeters und received no significant exposure. .
D. Miscellaneous
-1) Formal meetings of the Reactor Safety Comittee were held on the following dates:
l b January '12,1983 June 22,1983 February 24, 1983. June 27, _1983 March 29, 1983 September 8,1983
-May 9, 1983 September 14, 1983
- June 9, 1983 hovember 17, 1983
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June 16, 1983 December 16, 1983 4 A subcommittee of the Reactor Safety Comittee perfomed audits of the facility operations during the months of June and September,1983.
- 2) a. During.the mcath of May 1983 it was discovered that the facility had
. violated a Technical Specification requirement concerning the _ shutdown
" margin of the UVAR reactor. The NRC Region-II office in Atlanta was . notified. . .NRC inspectors wem at this- facility on June 2nd and 13rd,1983 and again on July 6, 7 and 8, .1983. An enforcement conference was' held at-this facility on -July.14,1983. As a restit of-the incident <
the: facility made_ extensive changes to the operating procedures for the
- UVAR mactor. . On October 6,1983 the-NRC proposed:a $1000 civil penalty for several alleged violations. The University filed a written. response to.the October 6 notice (along with payment for the proposed fine) on November 3, '.1983. An NRC inspector visited the: facility on December- -
- 19, 20 and 21, 1983. At the December 21 exit interview, the NRC
- -inspector ~ indicated no additional problems were identified and that the. .
University. had: succeeded in correcting all ' problems and concerns from !
< earlier: inspections. No formal NRC response has been received on the December inspection or the University's response to the NRC October.6, 1983 notice of violation.- ,
' b.l An NRCf Security Inspector visited the facility on October 31,1983 and ,
t November 1,1983 and found no problems.
- c. An ANIj Insurance Inspector visited our facility on October 7,1983. 3
- 3)L l n upgraded Emergency Plan for the facility was mailed to the NRC on September 13, 1983. As of _ this date we have had no response.
f -'4)D An Evacuation drill of-the ' facility was held.on_ July 20, 1983.
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- 5) ' An. upgraded version of the UVAR Safety Analysis Report was completed during the month of October,1983. This document will be known as the UVAR Design and Analysis Handbook and will be used by the facility as an internal document.
E. Personnel
- 1) No changes were made in the management personnel during 1983.
The full-time Health Physicist assigned to th.e reactor facility resigned
. in September 1983. . Personnel from the-Environmental Health and Safety Office have been providing daily health physics coverage of the facility
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until another full-time llealth Physicist can be hired.
- 2) Reactor Operator Exa$s were given by the NRC during the month of' August
. 1983 and resulted in the licensing of two senior reactor operators and thirteen reactor operators.
This report has been reviewed and approvad by the Reactor Safety Committee.
Since rely, GAAA -
J.P. Farrar, Reactor Supervisor UVA Reactor Facility IL - cc: Office of Inspection and Enforcement Atlanta, Georgia e
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