ML20072L867
| ML20072L867 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 07/08/1983 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SBN-531, NUDOCS 8307140222 | |
| Download: ML20072L867 (3) | |
Text
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SEABROOK STATION
% ONies:
1671 Worcamw Rood hominoham. hoochwe"s 01701 Pub 5c Service of New Hampshire 1
(617) - 872 - 8100 l
I July 8, 1983 SBN-531 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention:
Mr. Richard W. Starostecki, Director Division of Project and Resident Progr. ns Re fere nces :
(a) Construction Permit CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of June 8,1983, D. A. Maidrand (YAEC) to H. Kister (NRC Region I)
Subject:
Interim 10CFR50.55(e) Report; Class lE Hydrogen Analyzer
Dear Sir:
On June 8,1983, we reported a potential 10CFR50.55(e) deficiency
[ Reference (b)] regarding Class lE hydrogen analyzer catalyst contamination by fission-fragment iodine.
It *.as been determined that this item is reportable under 10CFR50.55(e).
The following information is being filed pursuant to the interim reporting provision of 10CFR50.55(e)(3).
A.
Description of Deficiency Comsip Incorporated has indicated that the potential exists for Class 1E hydrogen analyzer catalyst contamination by fission-fragment iodine which may be present in the containment atmosphere after LOCA.
B.
Analysis of Safety Implication The Class 1E hydrogen analyzers are components of the Combustible Gas Control (CCC) System and are used to monitor hydrogen concentration in the containment. The activation of the CCC System hydrogen recombiners and/or purge systems, etc., is based on the information obtained by the analyzers.
@307140222 830708 PDR ADOCK 05000443 S
PDR 1000 Elm St.. P.O. Box 330. Monchester. NH O3105 Telephone (603) 669-4000. TWX 7102207595 Ill
F United States Nuclear Regulatory Commission July 8, 1983 Attention:
Mr. Richard W. Starostecki Page 2 C.
Corrective Action Taken In order to determine the exact nature cf contamination, several calculations were made. The results of these calculations were inconclusive.
Comsip therefore initiated several tests to gather empirical data. Based on iodine partial pressure of 0.02 mm of Hg, Comsip tested two (2) catalyst bed configurations, the standard configuration which is in all systems shipped prior to April 1983 (Seabrook analyzer was shipped in 11/82) and a new configuration which significantly increases the path length and catalyst volume with the same overall dimensions.
The new configuration showed no signs of catalyst degradation af ter five (5) months of continuous testing.
Comsip recommended that the standard configuration catalyst bed be upgraded to the new configuration by a modification kit. We are initiating a Change Order to procure these kits for the hydrogen analyzers.
We will submit a final report to Region I upon verification that the installation of the modification kits has been completed.
Since the modification kits are currently being procured, no schedule for corrective action is available at this time. We will provide a status report by January 20, 1984 if a final report has not been filed by that time.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY J. DeVincentis Project Manager cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, D.C. 20555
1 s.
William S. Jordan, III, Esquire Ms. Olive L. Tash s
Harmon & Weiss Designated Representative of 1725 I Street, N.W. Suite 506 the Town of Brentwood Washington, DC 20006 R.F.D. 1, Dalton Road Brentwood, NH 03833 Roy P. Lessy, Jr., Esquire Office of the Executive Legal Director Edward F. Meany U.S. Nuclear Regulatory Commission Designated Representative of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus, Esquire Rye, NH 03870 116 Lowell Street P.O. Box 516 Calvin A. Canney Mancehster, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta, ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 208 State House Annex the Town of Hampton Concord, NH 03842 5 Morningside Drive Hamptcu, NH 03842 Anne Verge, Chairperson Board of Selectmen Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03842 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03870 Designated Representative of the Town of Kensington David R. Lewis, Esquire RFD 1 Atomic Safety and Licensing Board East Kingston, NH 03827 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Jo Ann Shotwell, Esquire Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Board of Selectmen j
Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 01950 Boston, MA 02108 Maynard B. Pearson Senator Gordon J. Humphrey 40 Monroe Street l
U.S. Senate Amesbury, MA 01913 Washington, DC 20510
. (Attn: Tom Burack)
Senator Gordon J. Humphrey 1 Pillsbury Street l
Diana P. Randall Concord, NH 03301 70 Collins Street (Attn: Herb Boynton)
SEabrook, NH 03874 Richard E. Sullivan, Mayor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 Town of Exeter 10 Front Street Exeter, NH 03833
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