ML20214L489
| ML20214L489 | |
| Person / Time | |
|---|---|
| Site: | North Carolina State University |
| Issue date: | 06/30/1986 |
| From: | Bray T North Carolina State University, RALEIGH, NC |
| To: | |
| Shared Package | |
| ML20214L484 | List: |
| References | |
| NUDOCS 8609100192 | |
| Download: ML20214L489 (9) | |
Text
PLLSTAR ANNUAL REPORT TO LNITED STATES NUCLEAR REGlLATORY COMISSION for the Period of 1 July 1985 - 30 June 1986 Submitted by G. D. Miller, Associate Director NCSU NUCLEAR REACTOR PROGRAM Prepared by Thomas C. Bray PULSTAR Reactor Operations Manager
Reference:
PULSTAR Technical Specifications Section 6.7.5 Docket No. 50-297 Department of Nuclear Engineering North Carolina State thiversity Raleigh, North Carolina 27650 August 29, 1986 8609100192 860829 PDR ADOCK 05000297 R
o DEPARTMENT OF NUCLEAR ENGINEERING PLA. STAR REACTOR ANNUAL REPORT For the Period:
1 July 1985 - 30 June 1986 The following report is submitted in accordance with Section 6.7.5 of the PULSTAR Technical Specifications:
6.7.5.as Reactor Operating Experiences (1) The NCSU PULSTAR reactor has been utilized for the followings a.
Teaching and Short Courses 101.80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br /> b.
Graduate Research 955.26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br /> c.
Isotope Production 0.12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> d.
Neutron Activation Analysis 1,973.36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> e.
PPP Reactor Operator Training 1,023.49 hours5.671296e-4 days <br />0.0136 hours <br />8.101852e-5 weeks <br />1.86445e-5 months <br /> f.
PULSTAR Reactor Operator Training 56.47 hours5.439815e-4 days <br />0.0131 hours <br />7.771164e-5 weeks <br />1.78835e-5 months <br /> g.
Reactor Calibrations and Measurements 13.17 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br /> h.
Reactor Health Physics Surveillance 1.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> TOTAL 4,125.42 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br /> Same reporting period 1984-85 3,080.93 hours0.00108 days <br />0.0258 hours <br />1.537698e-4 weeks <br />3.53865e-5 months <br /> Reactor Facility Tours 41.00 A cross section of experiments performed in the reactor relate to these areas:
a.
Neutron Activation Analysis of animal tissue, fly ash, sediments, rain / river water, filters, resins, coal, n, ilk, graphite, textile fiber, etc.
b.
Reactor thermal power measurements for teaching laboratories.
c.
Fast neutron flux-induced synergistic erosion effects on graphite first-wall plasma coating in fusion reactors.
d.
Thermal neutron depth profiling of Boron-implanted silicon.
e.
Neutron diffusion length measurements in graphite.
f.
Target / detector distance and co111mation optimization in the Prompt Gamma facility utilizing Baron, Cadmium, Molybdenum, Sulfur and Titanium.
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(2) Changes in Performance Characteristics and Operator Procedures Related to Reactor Safety:
None (3) Results of Surveillance Tests and Inspections:
The reactor surveillance program has revealed no significant nor unexpected trends in reactor systems performance during this report period.
6.7.5.be Total Energy Output:
1241.759 Megawatt-hours 51.740 Megawatt-days Pulse Operations:
0 Reactor was critical 1687.089 hours0.00103 days <br />0.0247 hours <br />1.471561e-4 weeks <br />3.38645e-5 months <br /> Cumulative Total Energy Output since Initial Criticality:
11,227.291 Megawatt-hours 467.804 Megawatt-days 6.7.5.c Number of Emergency and Unscheduled Shutdowns:
0 Number of Inadvertent Scrams:
22 Reasons:
(1) Operator Error 15 (2) Low Flow Setpoint Drift 1
(3) Safety Flapper Position Switch 3
(4) Loss of Commercial Electrical Power 3
Explanation of (1) above:
Nuclear Power Plant Reactor Operator Training (10), NRP staff Operations and Training (5).
Explanation of (2) above:
Primary coolant flow rate trip switch activated at a conservative 490 gpm rather than the 475 gpm designated setpoint. Small indicated fluctuations of brief tire duration are normal in the primary cooling system.
l. - _ _.
Explanation of (3) above:
Flapper closure handle operates a flapper position signal switch in addition to physically closing the flapper valve.
The flapper closing sequence is ' flapper closure, then switch actuation'.
Because this operating sequence requires a rather forceful pull on the flapper handle to operate the switch properly, occasionally an operator will not exert sufficient force to close both flapper and switch. The flapper valve has not been observed open when the position switch was indicating closed.
Explanation of (4) above:
Interruption of campus electrical power will result in an automatic reactor scram by virtue of RSS design.
6.7.5.d:
Major Maintenance Operations:
None during this reporting period.
6.7.5.e:
Changes in Facility, Procedures, Tests a'nd Experiments:
None during this reporting period.
Procedures: Revision No. I to Special Procedure 2.1, Reviewing Proposed Changes to Components, Systems, Structures and Procedures.
6.7.5.f:
Radioactive Effluents Liquid Wastes _ (summarized by quarters).
1.
Radioactivity Released During the Reporting Period.
(a)
(b)
(c)
(d)
(e)
Period No. of Total Total Vol. Diluent Tritium Quarter 1985 Batches pCi Liters Liters pCi 1st 1 July-30 Sept.
6 12.14 1.97 E4 1.07 E4 37.4 l
l 2nd 1 Oct.-31 Dec.
8 32.67 2.69 E4 5.48 E4 61.8 1986 3rd 1 Jan.-31 Mar.
6 23.28 2.03 E4 3.79 E4 34.5 I
4th 1 Apr.-30 June 8
21.98 2.70 E4 2.80 E4 12.3 (f) 90.07 pCi were released during this reporting period.
l (g) 146 pCi were released during this reporting period.
2.
Identification of Fission and Activation Products.
The gross alpha-beta-gamma activity of the batches in 1(a) above were less than 4 E-5 pCi/ml.
An isotopic analysis of these batches indicated only background activity.
3.
Disposition of Liquid Effluents Not Releasable to Sanitary Sewer System.
All batches of 1(a) above when diluted by campus water released to the sewer resulted in activity considerably less than 4 E-7 pC1/bl.
Therefore, all batches were released to the sanitary sewer system.
r Gaseous Waste (summarized on a monthly basis) 1.
Radioactivity Discharged During the Reporting Period (in curies) fors (a) Gases Total Time Period Hours C1, 1985 26 June-25 July 703.00
.26 26 July-22 Aug.
696.00
.55 23 Aug.-22 Sept.
735.50
.76 23 Sept.-21 Oct.
705.00 1.05 22 Oct.-19 Nov.
696.00
.78 20 Nov.-31 Dec.
1026.50 1.10 1986 1 Jan.-2 Feb.
744.00
.35 3 Feb.-2 Mar.
672.00
.87 3 Mar.-6 Apr.
838.00
.40 7 Apr.-1 May 574.00
.50 2 May-30 May 723.00
.27 31 May-26 June 647.00
.48 Totals 8760.00 7.37 (b) Particulates whose half-life is greater than eight (8) days.
Filters from the particulate monitoring channel were analyzed upon removal each week.
There was no particulate activity ((b) above) indicated on any filter during this reporting period.
2.
Gases and Particulates Discharged During This Reporting Period.
Gases:
The yearly averaged concentration of Argon-41 released from the PULSTAR Reactor facility exhaust stack during this period was 2.40 E-8 pCi/ml.
The NPC in an unrestricted area for Argon-41 is 4 E-8 pCi/ml.
Particulates:
See Gaseous Waste 1(b) above.
Solid Waste from Reactor 1.
Total volume of solid waste -
- 60 ft3 2.
Total activity of solid waste - 0.44 mci 3.
Dates of shipments and disposal:
12 August 1985 Disposal by U. S. Ecology 20 August 1985 Disposal by U. S. Ecology 23 September 1985 Disposal by U. S. Ecology 11 October 1985 Disposal by U. S. Ecology 8 January 1986 Disposal by U. S. Ecology 18 March 1986 Disposal by U. S. Ecology 16 June 1986 Disposal by U. S. Ecology l
l
m
~6.7.5.g Parc nn21 Radicticn Exps:urs Rep:rt (Rep:rting Teried 07/01/85-06/30/86)
E culty rnd St"ff Total Expotura (rem)
Auciello, Orlando E.
0.010 Biddy, Oscar D.
0.020 Bilyj, Stephen J.
0.100 Brackin, Thomas L.
0.0 Bray, Thomas C.
0.0 Caves, John R.
0.030 Cornetti, Richard 0.0 Davis, Glenda 0.0 Doster, J. Michael 0.0 Gardner, Robin P.
0.0 Gilligan, John 0.0 Grady, Stanley M.
0.050 Hankins, Orlando H.
0.010 Kimberley, Michael M.
0.020 Kohl, Jerome 0.0 Lambert, Joseph P.
0.0 Mani, Kolam V.
0.0 Miller, Garry D.
0.020 Munn, R. Hugh 0.0 Murty, K. Linga 0.390 Rayno, Donald R.
0.040 Saxe, Raymond F.
0.100 Stam, Ephraim 0.0 Strickland, David D.
0.010 Turinsky, Paul J.
0.0 Verghese, Kuruvilla 0.010 Weaver, Jack N.
0.0 Wehring, Bernard 0.0 Wilshire, Frank W.
0.0 Custodians Dunn, Johnnie (Discontinue 01/31/86) 0.0 Lucas, Calvin C.
0.0 Saunders, Dorothy L.
0.0 Walker, Elizah 0.0 Young, Charles 0.0 Other - 32 film badges were issued to graduate students and temporary staff, 62 badges were issued for student laboratories, 143 film badges were issued to participants in short courses, and 345 badges were issued to visitors.
No significant radiation exposures were reported; the majority of the radiation exposures were in the "no measurable exposure" range. -
6.7.5.h Summary of Radiation and Contamination Surveys Within the Facility Neither the radiation nor the contamination surveys indicated any trend or shift of data from past experience / surveys.
6.7.5.1:
Description of Environmental Surveys Outside of the Facility.
(See Attachment A)
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