ML20090B393

1991 Personnel Whole Body Exposure,Occupational Exposure & Safety/Relief Valve Failures & Challenges Rept

ML20090B393
Person / Time
Site:	Monticello
Issue date:	12/31/1991
From:	NORTHERN STATES POWER CO.
To:
Shared Package
ML20090B385	List: ML20090B384 ML20090B393
References
NUDOCS 9203030362
Download: ML20090B393 (5)

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ATTACHMENT 1 License: DPR-22 PERSONNEL WHOLE BODY EXPOSURE REPORT FOR CALENDAR YEAR 1991 ANNUAL DOSE RANGES REM NUMBER OF INDIVIDUALS IN EACH RANGE No measurable exposure 277

<0.100 299 0.100 - 0.249 137 0.250 - 0.499 165 0.500 - 0.749 124 0,750 0.999 97 1.000 - 1.999 127 2.000 - 3.000 15

>3.000 0

TOTAL NUMBER OF INDIVIDUALS REPORTED 1241 TOTAL PERSON-REM 465.461 The information submitted is for the total number of individuals for whom personnel monitoring was required during the calendar year.

9203030362 920226 PDR ADOCK 05000263 R PDR

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P ATTACHMENT 2 MONTICELLO NUCLEAR GENERATING PLANT ANNUAL REPORT OF OCCUPATIONAL EXPOSURE 1991

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,, Numbar of Personnol and Man-Rem by Work and Job runction (1991)

Number of Persons > .100 Total Man-Rem Work &' Job Function. Station Utility Contract Station Utility Contract Rx Ops & Sury Operations 44 0 0 22.120 0.0 0.0 Maintenance 44 98 9 11.544 27.933 4.559 Supy & Engr 27 2 12 8.090 1.078 4.968 Health Physics 23 0 26 9.526 0.0 7.436 Instr & Control 9 1 0 3.433 0.155 0.0 Security 0 0 2 0.0 0.0 1.405 Routine Maintenance operators 3 0 0 1.986 0.0 0.0 Maintenence 42 232 46 24.340 77.176 13.977 Supv & Engr 4 3 25 1.812 0.855 12.372 Health Physics 10 0 15 3.108 0.0 7.476 Instr & Control 0 0 0 0.191 -0.0 0.0

• Security 0 0 0 0.0 0.0 0.0

• Special Maintenance operators 39 0 0 14.225 0.0 0.0 Maintenance 34 191 32 17.415 85.428 10.493 Supv & Engr 30 5 27 13.199 1.173 9.427 Health Physics 10 0 17 5.216 0.0 11.338 Instr & Control 9 1 0 3.303 0.319 0.0 Security 0 0 0 0.0 0.0 0.0 Waste Processing Operators 1 0 0 0.431 0.0 0.0 Maintenance 1 0 0 0.566 0.405 0.0 Supy & Engr 1 0 1 0.241 0.004 1.510 Health Physics 1 0 1 0.396 0.0 0.211 Instr & Control 0 0 0 0.004 0.0 0.0 Security 0 0 0 0.0 0.0 0.0 Refueling operators. 32 0 0 7.733 0.0 0.0 Maintenance 14 34 0 4.348 11.158 0.144 Supv & Engr 2 0 1 0.609 0.115 0.129 Health Physics 2 0 4 0.776 0.0- 1.933 Instr & Control 0 0 0 0.048 0.001 0.0 Security 0 0 0 0.0 0.0 0.010 Inservice Inspection Operators 0 0 0 0.237 0.0 0.0 Maintenance 0 15 12 0.078 4.538 5.273 Supv & Engr 0 0 24 0.054 0.237 7.861 Health Physics 0 0 2 0.072 0.0 0.864

.nstr & Control 0 0 0 0.0 0.0 0.0 Security 0 0 0- 0.0 0.0 0.0 Unassigned Exposure -1.601 0.0 0.0 page 1

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• • Sub Totals Operators 119 0 0 46.732 0.0 0.0 Maintenance 135 570 99 58.291 206.638 34.446 Supv & Engr 64 10 90 24.005 3.462 36.267 Health Physics 46 0 65 19.094 0.0 29.258 Instr & Control 18 2 0 6.979 0.475 0.0 Security. 0 0 2 0.0 0.0 1.415 Unassigned -1.601 0.0 0.0 Grand Totals 382 582 256 153.500 210.575 101.386

• Special Maintenance Items: 1) Plant Painting

2) Three Mini-Outages

3) Refueling Outage

• • INDIVIDUALS MAY BE LISTED UNDER MORE THAN ONE WORK AND JOB FUNCTION l

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AT1ACHMENT 3 MONTICELLO NUCLEAR GENERATING PLANT SAFETY / RELIEF VALVE FAILURES AND CHALLENCES 1991 This report is made in accordance with NUREG 0737, Item II.K.3.3 and Monticello Technical Specification 6.7. A.6 and covers the period of January 1, 1991 through December 31, 1991.

Failures 2/14/91 The topworks associated with safety / relief valves'RV-2-71B and RV 2-71G were changed out due to excessive pilot /second stage leakage.

6/8/91 The topworks associated with safety / relief valve RV 71H was changed out due to excessive pilot /second stage leakage.

Ghallences Self- Low-Low Set Low-Low Set Low-Low Set Actuation Setpoint Acuations on Actuations on Setpoint 6/5/91 8/25/91 PSIG PSIG Due to Scrain Due to Scram RV-2-71A 1109 1-manual.

RV 2-71B 1109 1-manual RV-2-71C 1109 1 manual RV-2+71D 1109 1-manual RV-2-71E 1109 1072 1-manual RV-2-71F 1109 1-manual 2 manual RV-2-71G 1109 1062 2-auto l RV-2-71H 1109 1052 1-auto 10-auto l 1-manual 1-manual l

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