ML19275A486

From kanterella
Jump to navigation Jump to search
Responds to NRC Re Violations Noted in IE Insp Repts 50-491/79-12,50-492/79-12 & 50-493/79-12.Corrective Actions:New Welding Specs Added to Procedures
ML19275A486
Person / Time
Site: Cherokee  Duke Energy icon.png
Issue date: 08/17/1979
From: Dail L
DUKE POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19275A482 List:
References
NUDOCS 7910040524
Download: ML19275A486 (1)


Text

s, Q //ql 4

U::Nr,c riDUKE POWER COMPANY:

~ ?i:T!

EttcTHic CENTER, BOX 33180, CllAHLOTTE, N. C.

28242 o E,

"/. " Y,..

bI N

August 17, 1979 Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: Cherokee Nuclear Station RII: WPK a

Inspection Reports: 50-491, 49% & 493/79-12 Duke File: CK-1412.11-1

Dear Mr. O'Reilly:

In the referenced inspection reports, certain items of non-compliance were identified. Duke Power's response to these items is enclosed.

Duke Power does not consider any of the information contained in these reports to be proprietary.

Very truly yours, L. C. Dail Vice-Prasident Design Engineering EKM/ cam Enclosure "N=^m 1b98245 7 910 040 52 y WNh

()F1'2CIAL COPY

DUKE'S RESPONSE TO DEFICIENCY 491, 492 & 493/79-12-01 To comply with Paragraph QW-201.1 of ASME Section IX, Duke is adding to Procedure L-200, " Gas Tungsten Arc Welding Process Specification", the following:

1.

To cover peening in paragraph 11.15:

"Peeaing is prohibited unless otherwise allowed by the Field Weld Data Sheet or other controlling document.

Peening may be used to correct distortion or to relieve weld stresses, except that peening shall not be used on the first or last layers of a deposited weld.

Peening is prohibited in the temperature range 5000 to 8000 on carbon steels.

Peening shall be done with a rounded nose, smooth-faced tool driven by a power hamer."

2.

To cover width, frequency and dwell in paragraph 14:

" Width, frequency and dwell time apply only to automatic Field Weld Data Sheets."

These changes, will be implemented, the welders instructed, and full conpliance achieved by August 24, 1979.

l(r98 246