ML20215D786
| ML20215D786 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/12/1986 |
| From: | Farrar D COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8610140296 | |
| Download: ML20215D786 (2) | |
Text
..
p A (3 Commonwealth Edison Z
72 West Adamt Street. ChicrQo, filinois.
' Address Reply to: Post Offica Box 767 s' V Chicago, tilinois 60690-0767 June 12, 1986 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Cotunission 799 Roosevelt Road Glen Ellyn, IL 60137
SUBJECT:
Braidwood Station Units 1 and 2 Update Status to Inspection Report Nos. 50-456/84-05 and 50-457/84-05 NRC Docket Nos. 50-456/50-457
REFERENCE:
(a) R.F. Warnik letter to Cordell Reed dated July 2, 1985 (b) D.H. Smith letter to J.G. Keppler dated April 18, 1985
Dear Mr. Keppler:
This letter provides an updated status of action taken in response to the NRC violation 456/84-05-08, 457/84-05-08, Reference (a).
During a telecon with Region III (Messe. K. Ward) on October 25, 1985, changes to the corrective actions proposed in the Supplemental Response, Reference (b), 'fere presented. It was also agreed to by the Licensee to provide the NRC with an update, detailing these changes and the final results obtained.
After a thorough review and discussions with EPRI and Kodak consultants, Conunonwealth Edison has concluded that the corrective actions relative to this issue are to be handled in the following manner:
Inventory Southwest Fab supplied radiographic film stored in the Conunonwealth Edison Quality Assurance vault and separate the yellowed i
radiographic film from the non-yellowed radiographic film.
Non-Yellowed Radioaraphic Film 1.
Reinterleave film using new interleaving paper and new storage envelopes.
2.
Test a sample of the non-yellowed radiographic film for archival quality.
l Yellowed Radiographic Film 1.
Reinterleave film using new interleaving paper and new storage envelopes.
Because the washing or rewashing of the yellowed radiographic film did not reduce the amount of yellowing found on the radiographs, it was concluded that the washing be discontinued.
8610140296 860612 PDR ADOCK 05000456 gh O
PDR Pt
_ p a;.
James G. Keppler June 12, 1986 Page - 2 Consequently, it is suggested that the yellowed radiographic film be accepted as is, based on the following:
1.
The original radiographs were reviewed by qualified personnel from Southwest Fab, Southwest Fab's Authorized Nuclear Inspection Agency, and Sargent & Lundy and found to be acceptable to the ASME Section III Code. Acceptable radiographic reader sheets and technique sketches-for each radiographic location are included with each (double film) weld package.
2.
Radiographs at Braidwood were not used to establish an In-Service Inspection (ISI) baseline program.
3.
The amount of yellowed radiographic film, based on initial sampling, is less than (1%) one percent. If the subject yellowed radiographic film needs to be viewed in the future, EPRI personnel have developed a computerized technique which has been used to adequately enhance the image, allowing interpretation.
Following completion of the 100% review of Southwest Fab supplied radiographs for film yellowing, the results are consistent with those obtained during the initial sample. Of the approximately 9500 weld packages reviewed, 64 were found to contain various degrees of film yellowing. These numbers equate to a percentage of less than 1%, and indicate that the concern is isolated.
All other actions committed to above have been completed and are detailed in CECO NCR #606 Revision 1.
Should you or your staff have any questions concerning these items, please contact this office.
Very truly yours, he u
D.L. Farrar Director Nuclear Licensing ADM/ pay cc: NRC Resident Inspector - Braidwood 1779K