ML18153A492

Proposed Tech Specs Re Deletion of Specific ASME Section XI Code Ref

ML18153A492
Person / Time
Site:	Surry
Issue date:	02/03/1997
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18153A491	List: ML18153A490 ML18153A492
References
NUDOCS 9702200244
Download: ML18153A492 (4)

Text

e TS 4.15-3

4. In the event repairs of any welds are required following any examination during successive inspection intervals, the inspection schedule for the repaired welds will revert back to the first 10 year inspection program.

B. For all welds other than those identified in TS Figure 4.15:

1. Welds in the main steam lines including the safety valve headers and in the feedwater lines in the main steam valve house shall be examined in accordance with the requirements of subsection IWC of the ASME Section XI Code.

C. For all welds in the main steam valve house:

1. A visual inspection of the surface of the insulation at all weld locations shall be performed on a weekly basis for detection of leaks. Any detected leaks shall be investigated and evaluated. If the leakage is caused by a through-wall flaw, either the plant shall be shutdown, or the leaking piping isolated. Repairs shall be performed prior to return of this line to service.

2. Repairs, reexamination and piping pressure tests shall be conducted in accordance with the rules of ASME Section XI Code.

Amendment Nos.

9702200244 970203 PDR ADOCK 05000280 P PDR

• ATTACHMENT 3 SIGNIFICANT HAZARDS CONSIDERATION SURRY POWER STATION UNITS 1 AND 2

• NO SIGNIFICANT HAZARDS CONSIDERATION

• Virginia Electric and Power Company has reviewed the requirements of 10 CFR 50.92 as they relate to the proposed Technical Specifications change to Section 4.15.B.1 for the Surry Units 1 and 2. We have determined that a significant hazards consideration is not involved as discussed below:

The proposed change is a purely administrative change. In the Federal Register, Vol.

51, No. 44, dated March 6. 1986, "Rules and Regulations," the NRC provided guidance for the determination of significant hazards considerations. Under item (e) regarding examples of Technical Specifications amendments that are considered not likely to involve significant hazards consideration, the following example was listed:

(i) A purely administrative change to technical specifications: for example, a change to achieve consistency throughout the technical specifications, correction of an error, or a change in nomenclature.

Technical issues concerning the Code were resolved previously through the NRC endorsement process which updates 10 CFR 50.55a(b)(2). 10 CFR 50.55a(g)(5)(ii) states that if a revised inservice inspection program for a facility conflicts with the technical specification for the facility, the licensee shall apply to the Commission for amendment of the technical specifications to conform the technical specification to the revised program. Technical Specification 4.15.B.1 references subsection ISC 100 through 600 of the 1972 Winter Addenda of the ASME Section XI Code for performing weld examinations in our augmented inspection program. This specific Technical Specifications Code reference is inconsistent with the NRG-approved ISi Program Plan for Surry which specifies the 1989 edition as the Code of record, consistent with 10 CFR 50.55a(b)(2). The ISi Program Plan includes our augmented inspection program for Surry Power Station; therefore, the weld examinations performed as part of our augmented inspection program should be to the requirements of the 1989 edition of the Code. Consequently, Technical Specification 4.15.B.1 requires revision to conform to the revised ISi program. The proposed change to Technical Specification 4.15.B.1 provides a general reference to the ASME Section XI Code without specific reference to a Code edition. The use of a general Code reference is consistent with the wording in Technical Specifications 4.15.A and C, and ensures that weld examinations are being consistently performed to the latest approved edition of the ASME Section XI Code.

Criterion 1 - Operation of Surry Units 1 and 2 in accordance with the proposed Technical Specifications change does not involve a significant increase in the probability or consequences of an accident previously evaluated.

The proposed change is administrative in nature, and station operations are not being affected. The ASME Section XI Code requirements are thoroughly established, reviewed and approved by ASME, the industry and ultimately endorsed by the NRC for inclusion into 1O CFR 50.55a. Updates to the Code reflect advances in technology and consider information obtained from plant operating experience to provide enhanced inspection and examination techniques for pipe welds. Therefore, performing weld

• examinations 'tor the pipe in our augmented inspection program to the requirements of the 1989 edition of the ASME Section XI Code provides a regulatory acceptable and adequate level of assurance that the integrity of the pipe will be maintained. By not referencing a specific Code edition in the Technical Specifications, our examinations for pipe in the augmented inspection program will consistently be performed to the Code of record, consistent with the requirements 10 CFR 50.55a. Consequently, the probability or consequences of an accident previously evaluated are not increased.

Criterion 2 - The proposed Technical Specifications change does not create the possibility of a new or different kind of accident from any accident previously evaluated.

As noted above, the proposed change is administrative in nature, and no new accident precursors are being introduced. Since the .. augmented inspection program will continue to be performed to NRC approved ASME Section XI Code requirements, adequate assurance is provided to ensure the integrity of the pipe. Consequently, the proposed change does not create the possibility of a new or different kind of accident from any accident previously evaluated.

Criterion 3 - The proposed Technical Specifications change does not involve a significant reduction in a margin of safety.

Performing weld examinations to the Code of record is prudent, consistent with accepted industry and regulatory requirements, and provides adequate assurance that piping integrity will be maintained. The use of a general ASME Section XI Code reference in Technical Specification 4.15.B.1 is consistent with the existing wording in Technical Specifications 4.15.A and C, and ensures that weld examinations are being consistently performed to the currently approved edition of the ASME Section XI Code.

This is an administrative change and as such does not involve a significant reduction in the margin of safety.