ML17325B340
| ML17325B340 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 11/21/1989 |
| From: | Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AEP:NRC:1039A, NUDOCS 8911280223 | |
| Download: ML17325B340 (7) | |
Text
ACCELERATED DI UTION DEMONS TION SYSTEM fo REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
DOCKET 05000315 05000316
SUBJECT:
Responds to 891023 request for addi info re 890314 application for amend to Tech Spec.
DISTRIBUTION CODE:
A001D COPIES RECEIVED:LTR J ENCL i SIZE:
TITLE: OR Submittal:
General Distribution NOTES:
ACCESSION NBR:8911280223 DOC.DATE: 89/11/21 NOTARIZED: NO FACIL:50-315 Donald C.
Cook Nuclear Power Plant,, Unit 1, Indiana 6
50-316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana AUTH.NAME AUTHOR AFFILIATION ALEXICH,M.P.
(formerly Indiana 6 Michigan Ele RECIP.NAME RECIPIENT AFFILIATION MURLEY,T.E.
Document Control Branch (Document Control Desk)
RECIPIENT ID CODE/NAME PD3-1 LA GIITTER,J.
INTERNAL: NRR/DET 7E NRR/DOEA/OTSB11 NRR/DST/SELB 8D NRR/DST/SRXB 8E 0
EG F 01 EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1
1 5
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1 RECIPIENT ID CODE/NAME PD3-1 PD NRR/DET/ECMB 9H NRR/DST 7E NRR/DST/S ICB NUDOCS-ABSTRACT OGC/HDS 1 RES/DSIR/EIB NRC PDR COPIES LTTR ENCL 1
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1 Wc RP8 NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED:
LTTR 22 ENCL 20
Indiana Michigan Power Company P.O. Box 16631 Columbus, OH 43216 8
AEP:NRC:1039A Donald C.
Cook Nuclear Plant Unit Nos.
1 and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 T/S CHANGE REQUEST ON LOCKING OF HIGH RADIATION AREAS:
REQUEST FOR ADDITIONALINFORMATION U.
S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.
C.
20555 ATTN:
T.
E. Murley November 21, 1989
Dear Dr. Murley:
This letter provides the response to your October 23, 1989 request for additional information regarding our application for Technical Specification amendment (AEP:NRC:1039, March 14, 1989).
The additional information concerns the qualification, training, and authority of access control personnel and their potential annual dose rate.
The questions and our responses are provided in the attachment.
This document has been prepared following Corporate procedures that incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.
Sincerely, M.
. Al ich Vice President eh Attachment cc:
D. H. Williams, Jr.
A. A. Blind - Bridgman R.
C. Callen G. Charnoff NFEM Section Chief NRC Resident Inspector
- Bridgman A. B. Davis -'egion III 85'11230223 85'112i PDR ADOCK 05000315 I'DC
yt p
~r Attachment to AEP:NRC:1039A Question 1:
Please provide a description of the qualifications, training, and authority of the "designated individuals" with respect to their assignments to provide positive access controls tet prevent unauthorized entries into high radiation areas.
Response
1:
The "designated individuals" shall be Junior Radiation Protection Technicians.
Their training includes the Nuclear General Employee
- Training, and the Basic Orientation Module and Technician Basic courses of the Radiation Protection Lesson Plan.
These courses include information on such topics as radioactive material control, external exposure controls, and doserate meter operation.
The fundamentals of radiation are also covered in the initial training sequence.
Their authority will include the ability to allow access, deny access, and eject personnel from the area.
Question 2:
Please provide a list of areas for which posting of "designated individuals" will be substituted for locked doors.
Also, please provide typical dose rates within these areas and at points of access to these areas.
Response
2:
N At present, the Steam Generator working platforms are the main focus of attention for implementing this change.
This area typically has dose rates from 30 mR to 1.2R/hr.
The dose rate at the access point is typically less than,20mR/hr.
This change is also being requested for situations where the transport of highly radioactive waste creates a general area radiation field of greater than 1000 mR/hr or in the event of a defective locked door.
Question 3:
Please discuss current access controls at D.
C.
Cook for high radiation areas within containment and what, if any, changes will be made in these controls if the requested amendment is approved.
~
~
Attachment to AEP:NRC:1039A
Response
3:
Currently, access to areas which exceed 1000mR/hr is controlled by a lock-and-key system.
The key accountability is maintained by the use of a key locker and log system in accordance with approved security procedures.
A Radiation Work Permit (RWP) which allows entry into the specific area of consideration is also required.
The proposed change would allow access to the area to be controlled by a designated individual (see Question 1 response for access responsibilities) instead of the lock-and-key system in the event that it is not possible or practicable to provide locked doors.
An RWP, which specifically allowed access to the area would still be required.
Question 4:
Please provide a discussion of the means by which occupational radiation doses to "designated individuals" will be maintained as low as is reasonably achievable (ALARA) during assignments of these individuals to provide access control.
Response
4:
To provide the means to limit exposures ALARA, the access control point where the designated individual will be stationed shall be limited to less than 90 mR/hr.
Special structures (i.e. lead "cages")
may be temporarily constructed to limi.t exposure if the dose rate approaches or exceeds this level.
Xn addition, any personnel entering these high radiation areas will have their activities monitored by a Senior Radiation Protection technician.
Question 5:
Please provide an estimate, including the basis for the estimate, of the typical and maximum annual occupational dose that will be incurred by a "designated individual" as a result of that individual's assignment to provide access control.
Response
5:
The Donald C.
Cook Nuclear Plant is committed to keeping exposures below the limits contained in 10CFR20.
The exposure estimates described below are based on the regulatory limits in the proposed
Attachment to AEP:NRC:l039A revision to 10CFR20.,
No individual will receive exposure in excess of the revision of 10CFR20 in effect at the time of the exposure.
The anticipated annual exposure of the typical designated individual is.9 ManRem.
This estimate is based on an individual remaining in a 5 mR/hr field for 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> per week for 4 weeks.
The estimated maximum annual exposure for a designated individual is 4.0 ManRem.
This is based on an individual stationed in a 20 mR/hr field for 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br /> per week for 4 weeks.
Question 6:
Please provide an estimate, including the basis for the estimate, of the annual collective dose (person-rem) to "designated individuals" that will be attributable to the assignments of these individuals to provide access control.
Response
6:
The estimated number of these designated individuals assi.gned to access control for areas greater than 1000 mR/hr is four.
Conservatively estimating that one of these individuals will incur the maximum dose and three will incur the typical dose given in the response to Question 5., the estimate for the annual collective dose is 6.7 ManRem.
i