ML20217E930
| ML20217E930 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/25/1998 |
| From: | Saunders R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 98-176, NUDOCS 9803310215 | |
| Download: ML20217E930 (3) | |
Text
.-
a.
WGINIA ELECTRIC ann PowEn CmiPANY RICIINIOND, VIRGINI A 232fst March 25, 1998 United States Nuclear Regulatory Commission Serial No.98-176 Attention: Document Control Desk NL&OS/ETS R0 Washington, D.C. 20555 Docket No.
50-338 50-339 License No.
NPF-4 NPF-7 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY MORIHANtMLEQWEILSTAT10fLUNITs 1 & 2 REQUEST FOR USE OF ASME SECTION XI CODE CASE SECOND INTERVAL INSERVICE INSPECTION PROGRAMS Code Case N-535, " Alternative Requirements for Inservice inspection Intervals" is not currently approved for use by Regulatory Guide 1.147, inservice Inspection Code Case Acceptability ASME Section XI Division 1. Footnote 6 of 10 CFR 50.55a states that other Code Cases may be authorized upon request pursuant to 10 CFR 50.55a (a)(3).
In accordance with these provisions, permission is requested to utilize Code Case N-535 in North Anna's ASME Section XI inservice Inspection Program.
Code Case N-535 interprets interval inspection scheduling requirements and allows both interval and period extensions of up to one year to enable an inspection to coincide with a plant outage. Application of this Code Case would provide additional inspection scheduling flexibility in completing interval inspections. The Code Case allows examinations to be performed to satisfy the requirements of the extended interval in conjunction with examinations performed to satisfy requirements of the successive interval. However, an examination performed to satisfy requirements of either the extended interval or the successive interval shall not be credited to both intervals.
Currently, the North Anna Unit 1 interval will end on April 30,1999, and the North Anna Unit 2 interval will end on December 14,2000.
The use of this Code Case has been previously approved for use at Surry Power Station Units 1 and 2 by the NRC in a letter, dated April 16,1996.
\\b 9003310215 9003'2$
PDR-ADOCK 05000338 G
r
.o.
The use of this Code Case has been reviewed and approved by the Station Nuclear Safety and Operating Committee.
If you have any additional questions concerning this request, please contact us.
Very truly yours, R. F. Saunders Vice President - Nuclear Engineering and Services Attachment Commitments made in this letter:
None cc:
U. S. Nuclear Regulatory Commission Region II Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 Mr. M. J. Morgan NRC Senior Resident inspector North Anna Power Station
CASE N-535 CASES OF ASME BOILER AND PRESSURE VESSEL CODE Approval Dete: Deeember 12,1994 See Numeric Index for expiration and any resMrmation dates.
If an inspection interval is extended, neither the start Case N 535 Alternative Requirmnents for laservice Inspection and end dates nor the inservice inspection program for the successive interval need be revised.
IntervalsSection XI, Division 1 (b) Examinations may be performed to satisfy the requirements of the extended intervalin conjunction Inquiry: What alternative to the requirements of with examinations performed to satisfy the requir-IWA 2430(d) may be used for scheduling inservice ments of the successive interval. However, an ex-inspections for components inspected under Program amination performed to satisfy requirements of either the extended interval or the successive interval B7 shall not be credited to both intervals.
(c) That portion of an inspection interval de-Reply: It is the opinion of the Committee that the scribed as an inspection period may be reduced or following requirements may be used in lieu of IWA-extended by as much as one year to enable an in.
2430(d) for scheduling inservice inspections for com-spection to coincide with a plant outage. This ad-ponents inspected under Inspection Program B:
justment shall not alter the requirements for sched-(a) Each inspection interval may be reduced or ex.
pling inspection intervals.
tendeJ by as much as one year. Adjustments shall ol. Tne inspection interval for which an examina-not cause successive intervals to be altered by more rion vas performed shall be indentified on exami-than one year from the original pattern of intervals.
r.atios. records.
I 1069 l