ML17320A541
| ML17320A541 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 05/27/1983 |
| From: | Hunter R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.1, TASK-TM HEP:NRC:0678F, HEP:NRC:678F, NUDOCS 8306020281 | |
| Download: ML17320A541 (8) | |
Text
REGUL RY INFORMATION DISTRIBUTI SYSTEM (RIDS)
ACCESSION NBR;8306020281 DOC ~ DATE; 83/05/27 NOTARIZED:
NO DOCKET FACIL:50"315 Donald C ~
Cook Nuclear Power Plantg Unf t ii Indiana 8
0500031'5.
50-316 Donald C ~
Cook Nuclear Power Plant~
Unit 2~ Indiana 8
05000316 AUTH ~ NAME AUTHOR AFFILIATION HUNTER~R,S.
Indiana 8 Michigan Electric Co.
RECIP ~ NAME RECIPIENT AFFILIATION DENTONgH,RE Office of Nuclear Reactor Regulationi Director<<
SUBJECT:
Responds to 830510 ltr requesting addi info <<re status of NUREG"0737iItem II~ F ~ 1 ~ Installation of Uni<<t 2 high range containment monitor trending 5 recording function completed, Moni,tor operational'I'STRIBUTION
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TMI Action Plan Rgmt NUREG 0737 L'NUREG 0660 NOTES:
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INDIANA L MICHIGAN ELECTRIC COMPANY P. 0.
BOX 18 BOWI ING GREEN STATION NEW YORK, N. Y. 10004 May 27, 1983 AEP:NRC:0678F Donald C.
Cook Nuclear Plant Unit Nos.
1 and 2
Docket Nos. 50-315 and 50-316 License Nos.
DPR-58 and DPR-74 S. A. VARGA'S LETTER ON POST-TMI RELATED ISSUES, DATED May 10, 1983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.
C.
20555
Dear Mr. Denton:
Our letter No. AEP:NRC:0678E dated April 29, 1983, reported the then current status regarding NUREG-0737, Items II.F.l, Attachments 2
and 3. That letter was acknowledged by Mr, S. A. Varga's letter of May 10, 1983 which requested some additional information.
This letter responds to Mr. Varga's letter.
The installation of the Unit 2 high range containment monitor trending and recording function has been completed and is operational.
This installation completes the requirements outlined in our previous correspondence addressing Item II.F.1, Attachment 3, of NUREG 0737 for both Units.
During the period when the Unit 2 trending and recording was not functional, the high-range containment area monit:or and its indication were operational, so that the status of the in-containment radiation levels could have been followed during the course of an accident.
With regard to item II.F.1, Attachment 2, we concur with Mr.
Varga's comments as to the necessity of correcting the sample moisture problem in order to obviat:e the use of a "separate" sampling system.
As previously discussed the excessive moisture situation applies to both the Main Condenser Steam Jet Air Ejector (SJAE) and Gland Steam Seal Leak Off (GSLO) monit:ors in bot:h Units.
We have completed a
series of testing configurations to resolve the moisture problem.
Among the configuratio'ns tested were heat-traced inlet sample lines, uninsulated vertical piping and tubing loops, both with and without drains located above and below the monitor elevation, and air-cooled finned sample inlet and water-cooled sample line with various draining configurations.
It appears that the original sample line piping 83phppppsg 8~p>>7 PDR ADQCK 05000315 PDR
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AE C:0678F configuration with the addition of a water-)acket cooling coil, coil outlet drain and moisture separator provides a solution for the moisture condensation problem seen in the SJAE and GSLO radiation monitors.
We are proceeding with the installation of the above described final configuration.
The necessary equipment is either at the Plant or being fabricated there.
The required engineering, design and safety review documentation have been prepared and are under review.
We are proceeding on a expeditious basis with the installation of these modifications, and expect the physical installation to be complete by the May 31, 1983, date required for Item II.F.1, Attachment 1, in the Order Confirming Licensee Commitments on Post-TMI Related Issues, dated March 14, 1983.
However, completion of these modifications include physical installation, pre-operational testing, monitor calibration and, alignment.
We anticipate that the SJAE and GSLO monitors will be fully operational by June 30, 1983.
Until such time as the SJAE and GSLO monitors are available to fulfillthe requirements of Items II.F.l, Attachments 1 and 2, of NUREG
- 0737, we will maintain the "separate" sampling system described in our letter No. AEP:NRC:00678E dated April 29, 1983, for Item II.F.1,, and the existing Plant monitors for the SJAE 6
GSLO noble gas requirements of Item II.F.l, Attachment 1, fully operational.
In addition to the above situation involving the SJAE and GSLO
- monitors, we are in the process of final installation, calibration and alignment of the Unit Vent Monitor which is necessary to comply with the requirements of NUREG-0737, Item II.F.1, Attachment 1.
The Unit Vent Monitor will be operational by May 31, 1983.
However, the system will not totally reflect the final configuration in that a few non-critical items will be completed after May 31, 1983.
These items are freeze protection, heat-tracing of the sample and return lines, final shielding for ALARA concerns and relocation of the present Technical Specification required tritium sampler.
It is expected that these items will be completed on Unit 1 during the upcoming refueling outage scheduled to begin on July 8 and on Unit 2 during the upcoming Technical Specification Surveillance outage, approximately scheduled for after the Unit 1 refueling outage.
It should be noted that heat-tracing is not required to be operational during the summer and early fall months.
The present arrangement of postulated high exposure equipment on the post-accident portion of the Unit Vent Monitor is either located behind existing walls or part of the monitor block shielding.
Only a portion of the sample and return lines requires further shielding. In addition, the present tritium sampling system will remain in service until such time as operational conditions permit its transfer to the new Unit Vent Monitor. It is believed that the above described program and actions comprise a method which meets the intent of both Item II.F.1, Attachments 1 and 2 of NUREG-0737 until such time as the final configuration of the Unit Vent, SJAE and GSLO monitors is achieved.
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Mr. Harold R.
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<C:0678F This letter has been prepared following Corporate Procedures which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.
Very truly yours,
/md R.
S. Hunter Vice President cc:
John E. Dolan M. P. Alexich R.
W. Jurgensen W. G. Smith, Jr.
Bridgman R.
C. Callen F. Charnoff NRC Resident Inspector at Cook Plant - Bridgman
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