ML030640016
| ML030640016 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 03/05/2003 |
| From: | Donohew J NRC/NRR/DLPM/LPD4 |
| To: | Office of Nuclear Reactor Regulation |
| Donohew J N, NRR/DLPM,415-1307 | |
| References | |
| TAC MB4077 | |
| Download: ML030640016 (2) | |
Text
March 5, 2003 MEMORANDUM TO: File FROM:
Jack N. Donohew, Senior Project Manager, Section 2
/RA/
Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation
SUBJECT:
TELECONFERENCE ON RELIEF REQUEST NO. I2R-23 FOR WOLF CREEK GENERATING STATION (TAC NO. MB4077)
In its "ET 02-0001, Inservice Inspection Program Alternative for Limited Examination on Feedwater Nozzle to Steam Generator Shell Weld, Relief Request [[SSC" contains a listed "[" character as part of the property label and has therefore been classified as invalid.|letter dated February 12, 2002]] (ET 02-0001), Wolf Creek Nuclear Operating Corporation (the licensee) submitted Relief Request (RR) I2R-23, which requested approval for the use of an alternative to the requirements of Section XI, inservice inspection program, of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (i.e, the Code).
On February 11, 2003, a teleconference with the licensee was held to clarify staff questions regarding the ultrasonic volumetric coverage obtained by the licensee, as noted in RR I2R-23, for the Steam Generator A Nozzle-to-Shell Weld EBB01 A-11-W.
In the teleconference, the staff inquired if the licensee obtained 100% examination volume from one side with its 60 degree perpendicular scan, but only took credit for 50% of the exam. The licensee informed the staff that it only credited 50% of the examination because the examination was performed from one side of the weld only and that the configuration of the subject nozzle-to-shell component prevented the examiner from performing the examination from both sides of the weld.
The staff also requested the licensee to clarify the reasons for the 0% volumetric examination coverage for the 45 and 60 degree parallel scans and the 0 degree scan. The licensee informed the staff that due to the configuration of the subject nozzle-to-shell component, they experienced lift off of the transducer and could not obtain the required Code coverage.
Docket No. 50-482
ML030640016 NRR-106 OFFICE PDIV-2/PM PDIV-2/LA EMCB PDIV-2/SC NAME JDonohew EPeyton TMcLellan RGramm for SDembek DATE 2/28/03 2/28/03 3/03/03 3/4/03 DOCUMENT NAME: C:\\ORPCheckout\\FileNET\\ML030640016.wpd