ML20024E157

From kanterella
Jump to navigation Jump to search
Forwards Rev 1 to Structural Evaluation of Pilgrim Station Core Spray Sparger Based Upon Results from Oct 1981 Remote Visual Insp & Fracture Mechanics Evaluation of Core Spray Sparger Indications.
ML20024E157
Person / Time
Site: Pilgrim
Issue date: 08/04/1983
From: Harrington W
BOSTON EDISON CO.
To: Vassallo D
Office of Nuclear Reactor Regulation
Shared Package
ML20024E158 List:
References
83-209, NUDOCS 8308090317
Download: ML20024E157 (1)


Text

--

. . . . _ . . . _ . . .m t.

l EOSTON EDISON COMPANY

+-

500 EDYLSTON STREET ScSTON. MASSACHUSETTS O2199 '

4 L

August 4, 1983

[ BECo Letter No. 83- 209 Mr. Domenic B. Vassallo, Chief Operating Reactors Branch #2

. Division of Licensing Office of Nuclear Reactor Regulation i U.S.' Nuclear Regulatory Commission Washington, D.C. 20555 License No.-DPR-35 Docket No. 50-293

Subject:

Final Report of Pilgrim Core Spray Sparger Inspection of October 1981

Dear Sir:

I By letter dated November 17, 1981, we submitted Aptech Engineering Services (AES) i Preliminary- Report 81-10-83, Structural Evaluation ' of the Pilgrim Station Core Spray Sparger Based upon .Results from the October 1981 Remote Visual Inspection.

l This i.ndependent assessment of the significance of surface' indications located in the core spray sparger of the Pilgrim Station concluded that the surface indica-tions are within our established structural integrity criteria and that clamping I of the sparger is not required for the next 18-month fuel cycle.

~

! The preliminary report has -since been revised to incorporate . review comments.

The conclusions of the independent assessment have not changed. This Final Report.

81-10-83, Revision 1, is provided for your information in Attachment A. Reference 9 in Final Report 81-10-83, Revision 1, is also provided for 'your information in Attachment B.

During the next refueling outage, a similar in'spection of the core spray spargers will be performed and the results will be compared with the results in Final 4

Report 81-10-83, Revision 1.

Ver y yours, N ]h W"A DMV/ mat Attachments: A) AES Final Report 81-10-83, Revision 1, Structural Evaluation of the Pilgrim Station Core ' Spray Sparger Based upon Results from the October 1981 Remote Visual Inspection.

B) AES Final Report 8102243, A Fracture Mechanics Evaluation of Core Spray Sparger Indications. ,

ADOhko!oo$hj3 e __