ML020640459

2001 Annual Reports for Occupational Exposure Data and the Reactor Coolant System Specific Activity Analysis

ML020640459
Person / Time
Site:	Sequoyah
Issue date:	02/14/2002
From:	Salas P Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RIS-01-005
Download: ML020640459 (7)

Text

Tennessee Valley Authority, Post Office Box 2000, Soddy-Daisy, Tennessee 37384-2000 February 14, 2002 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of Tennessee Valley Authority Docket Nos.

50-327 50-328 SEQUOYAH NUCLEAR PLANT -

2001 ANNUAL REPORTS Enclosed are the 2001 Annual Reports for Sequoyah.

These reports contain a summary of the following items:

occupational exposure data and the reactor coolant system specific activity analysis.

These reports are being submitted to satisfy the requirements of Technical Specifications 6.9.1.4 and 6.9.1.5.

This letter is being sent in accordance with NRC RIS 2001-05.

Please direct questions concerning this submittal to me at (423) 843-7170 or J.

D. Smith at (423) 843-6672.

ing and Industry Affairs Manager Enclosure cc:

See page 2 Ioo Pmnled on rec-yced paper

) )

U.S. Nuclear Regulatory Commission Page 2 February 14, 2002 Enclosure cc (Enclosure):

U.S. Nuclear Regulatory Commission ATTN:

REIRS Project Manager Mail Stop T-9 C24 Washington, D.C. 20555

TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 ANNUAL REPORTS TO THE NUCLEAR REGULATORY COMMISSION JANUARY 1 -

DECEMBER 31, 2001 DOCKET NUMBERS 50-327 AND 50-328 LICENSE NUMBERS DPR-77 AND DPR-79

SEQUOYAH NUCLEAR PLANT 2001 ANNUAL REPORTS TABLE OF CONTENTS Page Overview......................................

1 Occupational Exposure Data......................

3

SEQUOYAH NUCLEAR PLANT (SQN)

UNITS 1 AND 2 2001 ANNUAL REPORTS OVERVIEW Occupational Exposure Data Attached is the exposure data for personnel at SQN that received greater than 100 millirem between January 1 and December 31, 2001.

The numbers of personnel listed in the attached report are calculated fractions based on personnel and Radiation Work Permits code classifications.

Exposure data for special maintenance is based on the following activities:

"* Mechanical and Electrical Valve Modifications

"* Walkdowns for Unit 1 Steam Generator Replacement

"* Change Out Unit 2 Containment Air Radiation Monitors

"* Reactor Coolant Pump 2 Platform Modifications

"* Install Component Cooling System Relief Valves on the Spent Fuel Pit Heat Exchangers Replace GEMAC Component cooling System Level Transmitters wit~aosemount Instruments

"* Clean, Inspect, and Paint Interior of Unit 1 Primary Water Storage Tank

"* Modify and remove Remote Valve Operators (Reach Rods) on Various Systems

"* Replace Unit 1 Upper Internals Guide Tube Support Pins (Split Pins)

"* Modify Upper Internals Lift Rig Personnel Platforms for Units 1 and 2

"* Replace Unit 1 Cold Leg Accumulator Level Transmitters

"* Remove Unit 1 Positive Displacement Charging Pump and Room Cooler

"* Install Permanent Connections forMansel Level Indication System

"* Elevation 706" Railroad Bay Access Floor for Dry Cask Storage Loading

• Replace Residual Heat Removal Heat Exchanger Drain Valves

"* Replace NAMCO Conduit Seals with CONAX

"* Add Piping for remote Reactor Coolant Pump Oil Fill The cumulative radiation exposure for calendar year 2001 for persons receiving more than 100mrem/year is ll8.110rem. The total whole body exposure received from external sources for calendar year 2001, as measured by TLD, is 143.289rem.

As required by the respective units' Technical Specifications, at least 80% of the total site exposure has been assigned to specific major work activities.

1 -

Reactor Coolant System (RCS)

Specific Activity Analysi4Specific Iodine Isotopic Activity Concentration and/or DE-n31 Determination)

During 2001, there were no specific iodine activity results of Unilt or Unit 2 RCSs exceeding the limits of Technical Specification (TSý.4.8.a (0.35 mCi/gm) during either power operation or reactor shutdown and/or start-up.

2 -

Date: 29-JAN-2002 13:52 Sequoyah Nuclear Plant P.O. Box 2000 Soddy Daisy, TN 37384-2000 LICENSE:

DPR-77 AND DPR-79 Regulatory Guide 1.16 Information End of Year Report 2001 Number of Personnel

> 100 mrem Total man-rem

• Work and Job Function Station Utility Contractor Station Utility Contractor ROUTINE OPERATIONS AND SURVEILLANCE N.INTENANCE PERSONNEL 0.102 0.015 0.281 0.015 0.003 0.052 OPERATIONS PERSONNEL 12.116 0.565 0.000 1.762 0.078 0.000 HEALTH PHYSICS PERSONNEL 4.525 0.000 1.416 0.819 0.000 0.237 SUPERVISORY PERSONNEL 0.022 0.007 0.000 0.005 0.001 0.000 ENGINEERING PERSONNEL 0.180 0.000 0.000 0.027 0.000 0.000 ROUTINE PLANT MATENANCE MAINTENANCE PERSONNEL 45.572 20.685 108.475 8.880 3.733 28.175 OPERATIONS PERSONNEL 4.021 0.420 0.000 0.534 0.058 0.000 HEALTH PHYSICS PERSONNEL 15.902 1.673 16.505 4.613 0.395 3.354 SUPERVISORY PERSONNEL 4.358 1.200 0.000 1.188 0.139 0.000 ENGINEERING PERSONNEL 3.877 2.023 1.533 0.823 0.240 0.241 INSERVICE INSPECTION MAINTENANCE PERSONNEL 1.930 3.976 61.334 0.425 1.350 18.237 OPERATIONS PERSONNEL 1.629 0.000 0.000 0.229 0.000 0.000 HEALTH PHYSICS PERSONNEL 2.677 0.327 10.770 1.321 0.092 2.042 SUPERVISORY PERSONNEL 6.563 0.902 0.000 2.732 0.156 0.000 ENGINEERING PERSONNEL 2.196 2.985 8.823 0.760 0.564 2.110 SPECIAL PLANT MAINTENACE MAMNANCE PERSONNEL 0.128 0.027 69.024 0.030 0.004 19.407 OPERATIONS PERSONNEL 0.017 0.000 0.000 0.006 0.000 0.000 HEALTH PHYSICS PERSONNEL 0.772 0.000 0.209 0.147 0.000 0.030 SUPERVISORY PERSONNEL 0.200 0.204 0.000 0.030 0.030 0.000 ENGINEERING PERSONNEL 0.019 0.218 1.514 0.006 0.057 0.333 WASTE PROCESSING MMITENANCE PERSONNEL 0.138 0.000 0.725 0.027 0.000 0.106 OPERATIONS PERSONNEL 0.000 0.014 0.000 0.000 0.002 0.000 HEALTH PHYSICS PERSONNEL 2.012 0.000 0.940 0.328 0.000 0.454 SUPERVISORY PERSONNEL 0.000 0.000 0.000 0.000 0.000 0.000 ENGINEERING PERSONNEL 0.000 0.000 0.000 0.000 0.000 0.000 REFUELING MAINTENANCE PERSONNEL 1.857 0.297 34.162 0.295 0.046 9.841 OPERATIONS PERSONNEL 1.216 0.000 0.000 0.332 0.000 0.000 HEALTH PHYSICS PERSONNEL 1.113 0.000 0.161 0.308 0.000 0.034 SUPERVISORY PERSONNEL 1.857 0.687 0.000 0.276 0.101 0.000 ENGINEERING PERSONNEL 0.000 0.775 1.130 0.000 0.203 0.287 Totals zoNANC PERSONNEL 49.728 25.000 274.000 9.672 5.136 75.818 OPERATIONS PERSONNEL 19.000 1.000 0.000 2.863 0.138 0.000 HEALTH PHYSICS PERSONNEL 27.000 2.000 30.000 7.536 0.487 6.151 SUPERVISORY PERSONNEL 13.000 3.000 0.000 4.231 0.427 0.000 ENGINEERING PERSONNEL 6.272 6.000 13.000 1.616 1.064 2.971 Grand Totals 115.000 37.000 317.000 25.918 7.252 84.940

• The man-rem totals include dose only fron individuals receiving more than 100 mrem throughout the year at the site.