ML20207Q557

Ro:On 861107,during Fourth Quarterly Insp,Radioactive Water Discovered Collecting in Containment Vessel Sump.Caused by Condensation.Water Will Be Monitored,Removed & Disposed of as Necessary.Results of Analysis Encl

ML20207Q557
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	12/02/1986
From:	Heward R SAXTON NUCLEAR EXPERIMENTAL CORP.
To:	Elsasser T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SNEC-86-0075, SNEC-86-75, NUDOCS 8701270531
Download: ML20207Q557 (4)

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uE SAXTON NUCLEAR EXPERIMENTAL CORPORATION G

GENERAL P U B LIC UTILITIES SYSTEM P SNEC Jersey Central Power & Light Company Pennsylvania Electric Company PE JC Metropolitan Edison Company MAILING ADDRESS: TELEPHONE:

100 INTERPACE PARKWAY 201-263-6500 l PARSIPPANY, NJ. 07054 December 2, 1986 SNEC-86-0075 Mr. Thomas Elsasser Section Chief of Reactor Projects Section 3-C U. S. Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19063 Docket No. 50-146 License No. DPR-4'

SUBJECT:

CONTAMINATED WATER FROM THE CONTAINMENT VESSEL SUMP

Dear Mr. Elsasser:

On November 7, 1986, the fourth quarterly inspection of 1986 was conducted at the Saxton Nuclear Experimental Corporation (SNEC) facility. During this inspection, water was noted to have collected in the containment vessel sump. Radioisotopic analysis of this water revealed it to contain radionuclide concentrations of Cs-134, Cs-137, and Sr-90 in excess of 10 CFR 20 Appendix B, Table II, " Limits for Unrestricted Release" and is reportable under Section 5.a3 of the SNEC Technical Specifications. The analysis results are presented in Exhibit 1, attached. The presence of this water poses no threat to the environment or to the public health and safety, since there are no release paths from the containment vessel sump to the environment. When appropriate, the water will be properly disposed of as it has been in the

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The water originates from condensation on the inside of the CV. The condensation is a consequence of a breather pipe installed during decommissioning, which permits the CV to breathe when changes ~in atmospheric temperature occur.

8701270531 861202 PDR ADOCK 05000146 ,

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Mi. Thomas Elsasser December 2, 1986 It is apparent that the influx of water to the sump cannot be readily terminated without installation of a system to control the internal atmosphere of the CV. This action is not deemed necessary since the water has no pathway to the external environment. We will continue to periodically monitor, remove, and take the appropriate steps to secure and dispose of this water.

If you have any questions concerning this report, please call me at (201) 316-7594.

Sincerely, ,

6~

R. W. Heward, Jr.

President RWH/slw/0224S Enclosure cc: R. E. Carter, NRC T. Weadock, NRC D. Haverkamp, NRC File: 2412.5.2

a EXHIBIT 1 Results of SNEC Water November 7,1986 10 CFR 20 App. B*

CV Water Table II, Col. 2 Limits Isotope Concentration (uCi/ml) (uCi/ml)

H-3 8.7E-4 1 2.3E-5 3.0E-3 Co-60 5.7E-6 1 7.0E-7 3.0E-5 (I)

Cs-134 1.0E-5 1 8.1 E-7 9.0E-6 (S)

Cs-137 2. 3E-3 1 1.1 E-5 2.0E-5 (S)

Sr-90 7.3E-6 1 1.6E-7 3.0E-7 (S)

• Values listed are the more restrictive between soluble (S) and insoluble (I).

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