ML20207N199
| ML20207N199 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/08/1987 |
| From: | Olshan L Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| TASK-2.F.1, TASK-TM NUDOCS 8701140048 | |
| Download: ML20207N199 (2) | |
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January 8, 1987 S
Docket Nos. STN 50-454 DISTRIBUTION STN 50-455
B. Grimes Director of Nuclear Licensing L. Olshan J. Partlow Commonwealth Edison Company C. Vogan N. Thompson P.O. Box 767 ACRS (10)
Chicago, Illinois 60690
Dear Mr. Farrar:
SUBJECT:
TMI ITEM II.F.1, IODINE / PARTICULATE SAMPLING - BYRON STATION, UNITS 1 AND 2 In a letter dated November 5,1986 you submitted a description of the modifications that will be made at Byron to demonstrate the capability to sample for gaseous radiciodine in conformance with TMI Action Plan Item II.F.1.
This information was submitted to provide us with sufficient detail to evaluate whether the concerns identified in Section 11.5 of SER Supplement No. 5 have been satisfied.
You have proposed to replaced the 1/4" diameter high range sample line with 3/4" diameter heat-traced line which will sample under both low and mid/high range operating conditions. An auxiliary pump skid has been added with automatic isokinetic flow control through the use of a flow splitter manifold. This auxiliary pump will be automatically started by the radiation monitor's coprocessor and stopped by the high flow sample pump. The flow splitter manifold will direct the entire sample to the high flow path during low range radioactivity operation when the high flow sample is operating and to the low flow sample path during mid/high range operation when the low flow path sample pump and the auxiliary pump are running.
We believe that the utilization of this high flow sample line (3/4") eliminates the concern expressed in SER Supplement No. 5.
However, the NRC has contracted Pacific Northwest Laboratories (PNL) to study the problems associated with obtaining representative samples from these sampling lines. While we find the present modifications to the Byron facility acceptable, additional modifications may be required based upon the recommendations of the PNL study. For the present, the your modifications are deemed acceptable.
Your November 5,1986 letter committed to install these modifications prior to startup following the first refueling outage of Unit 1.
When the modifications are completed, we comider that the Condition 2.C(8) in the Unit I license, dated February 14, 1985, will have been satisfied.,
Lecnard N. Olshan, Project Manager Project Directorate #3 Division of PWR Licensing-A cc: Seq next page PD#3 7'
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r Mr. Dennis L. Farrar Byron Station Comonwealth Edison Company Units I and 2 cc:
Ms. Diane Chavez Mr. William Vortier Atomic Power Distribution 528 Gregory Street" Westinghouse Electric Corporation Rockford, Illinois 61108 Post Office Box 355 Pittsburgh, Pennsylvania 15230 Regional Administrator, Pegion III U. S. Nuclear Regulatory Comission 799 Roosevelt Road Michael Miller Isham, Lincoln & Beale Glen Ellyn, Illinois 60137 One First National Plaza 42nd Floor Joseph Gallo, Esq.
Chicago, Illinois 60603 Isham, Lincoln & Beale Suite 1100 Prs. Phillip B. Johnson 1150 Connecticut Avenue, N.W.
1907 Stratford Lane Washington, D. C.
20036
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Rockford, Illinois 61107 Douglass Cassel, Esq.
Dr. Bruce von Zellen 109 N. Dearborn Street Department of Biological Sciencas Suite 1300 Northern Illinois University Chicago, Illinois 60602 DeKalb, Illinois 61107 Ms. Pat Morrison Mr. Edward R. Crass 5568 Thunderidge Drive Nuclear Safeguards & Licensing Rockford, Illinois 61107 Sargent & Lundy Engineers 55 East Monroe Street Ms. Lorraine Creek Chicago, Illinois 60603 Rt. 1, Box 182 Manteno, Illinois 60950 Mr. Julian Hinds U. S. Nuclear Regulatory Comission Byron / Resident Inspectors Offices 4448 Geman Church Road Byron, Illinois 61010 Mr. Michael C. Parker, Chief Division of Engineering Illinois Department of Nuclear Safety 1035 Outer Park Drive Springfield, Illinois 62704 i
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