ML20212F886
| ML20212F886 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 09/23/1999 |
| From: | Dennis Morey SOUTHERN NUCLEAR OPERATING CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NEL-99-0339, NUDOCS 9909280411 | |
| Download: ML20212F886 (8) | |
Text
- - -
f
,-_4 DCve Morey
' Southern Nuclect Vice President Operet:ng Compacy farley!% ject P.O. Box 129; i
Birrningham. Alabama 25201 J
Tel 205.992.5N1
)
k SOUTHERN L COMPANY September 23, 1999 Energy to Serve YourWorld' Docket Nos.:
50-348 NEL-09-0339
)
50-364 U. S. Nuclear Regulatory Commission ATfN: Document Control Desk Washington, DC 20555-0001 Joseph M. Farley Nuclear Plant Inservice Insocetion Relief Reauest Number 32 Ladies and Gentlemen:
Southern Nuclear Operating Company (SNC) submitted on March 3,1999, several relief requests related to the Inservice Inspection Program. Phone conveisations with the NRC regarding Relief Requests RR-32 and RR-35 have led SNC to revise the former and withdraw the latter. The revised RR-32 requests are hereby submitted for approval. Approval is requested by December 31,1999 to suppoit activities to be performed during the Unit I refueling outage scheduled for the spring of 2000.
There are no new c'ommitments contained in this letter. If you have any questions, please advise.
I Respectfully submitted,
)
h N7av Dave Morey CWD/mafrr32. doc Attachments:
1.
Unit 1 IST Program Relief Requect - No. RR-32
{
II.
Unit 2 IST Program Relief Request - No. RR-32 j
i
\\DR1 l
i l
r) job I
990928041i 99ov23 PDR ADOCK O$00o348 G
c.-
t Page 2 U. S. Nuclear Regulatory Commission i
1 L
cc:
Southern Nuclear Operatina Compa_ny n
Mr. L. M. Stinson, General Manager - Farley U. S. Nuclear Reculatory Commissien. Washincton D L Mr. L. M. Padovan, Licensing Project Manager - Faricy U. S. Nuclear Reculatory Commission. RecionJI Mr. L. A. Reyes, Regional Administrator Mr. T. P. Johnson, Senior Resident Inspector - Farley 1
i f-r 1
~
l
4 4
ENCLOSUREI SOUTiiERN NUCLEAR OPERATING COMPANY FARLEY UNIT 1 f
TlilRD 10-YEAR INTERVA1 REQUEST FOR RELIEF NO. RR-32 l
I 3
6 SOUTl1ERN NUCLEAR OPERATING COMPANY FARLEY UNIT 1 HilRD 10-YEAR INTERVAL REQUEST FOR RELIEF NO. RR-32 I. -
System /Comoonent(s) for Which Reliefis Requested: Class MC (Metallic Containment) pressure-retaining bolting, Examination Category E-G, Item E8.20 associated with bolted flanges on two electrical penetrations built by i
Westinghouse. SpeciScally these penetrations are identined as:
j QlT52-B009-A and QlT52-B011-B SNC has determined that these are the only bolted connections which are under tension due to containment pressure and which are not routinely disassembled during refueling outages.
II.
Code Requirement: 10 CFR 50.55a was amended in the Federal Register on August 8,1996 to require the use of ASME Section XI,1992 Edition,1992 Addenda, when performing containment examinations. The 1992 Edition with 1992 Addenda of ASME Section XI, Table IWE 2500-1, Examination Category E-G, item Number E8.20 requires a bolt torque or tension test for bolted connections that have not been disassembled, inspected, and reassembled during the inspection interval.
III.
Code Requirement for Which Reliefis Reauesisd: Reliefis requested from performing the Code-required torque or tension test on the above identined pressure retaining bolting.-
IV.
Basis for Relief: Each of these electrical penetrations receive a periodic 10 CFR 50 Appendix J, Option B test at least once per interval. The performance of the Type B test proves that the bolt torque or tension remains adequate under j
simulated accident pressure conditions to restrict leakage to acceptable limits.
Once a bolt in a containment penetration is torqued or tensioned, it should not be subject to dynamic loading that could cause it to experience signincant change.
)
The Appendix J testing is adequate to demonstrate that the design function is met.
Torque or tension testing is not required for ASME Section XI, Class 1,2, or 3 bolted connections or their supports as part of the inservice inspection program.
The ASME Code Committee recognized that these tests were not warranted, and the 1998 Edition of the ASME Section XI Code has removed the examination requirement.
1of2 i
p I
V; l
The alternate examination will encure the bolt torque or tension remains adequate.
l This will ensure the structural integrity and leak-tightness of this pressure l
retaining boltmg.
i V.
Alternate Examinatina: The electrical penetrations shall receive an Appendix J, i
i test at least once every interval to ensure the bolt torque or tension remains l
adequate. This will ensure the structural integrity and leak-tightness of Class MC (Metallic Containment) pressure retaining bohing.
VI.
Justification for Granting Religf: ' Leak' testing per 10 CFR 50, Appendix J will provide assurance of the integrity of pressure-retaining bolting and is an acceptable alternative to the 1992 Code required bolt torque or tension test. Public health and safety will not be endangered; therefore, this relief request should be granted pursuant to the requirements of 10 CFR 50.55(a)(3)(i).
' VII.
Implementation Schedule: This relief request is applicable to examinations performed using the 1992 Edition,1992 Addenda, of Section XI during the
- current inspection interval.
VIII. Relief Request Status: Awaiting NRC approval.
1 l
2 of 2
ENCLOSUREII SOUTIIERN NUCLEAR OPERATING COMPANY FARLEY UNIT 2 UPDATED PROGRAM REQUEST FOR RELIEF NO. RR-32 l
i i
SOUTHERN NUCLEAR OPERATING COMPANY FARLEY UNIT 2 UPDATED PROGRAM REQUEST FOR RELIEF NO. RR-32 i
III.
System / Component (s) for Which Reliefis Reauested: Class MC (Metallic Containment) pressure-retaining bolting, Examination Category E-G, Item E8.20 associated with bolted flanges on two electrical penetrations built by Westinghouse. Specifically these penetrations are identified as:
Q2T52-B009-A and Q2T52-B011-B SNC has determined that these are the only bolted connections which are under tension due to containment pressure and which are not routinely disassembled during refueling outages.
IV.
Code Requirement: 10 CFR 50.55a was amended in the Federal Register on August 8,1996 to require the use of ASME Section XI,1992 Edition,1992 Addenda, when performing containment examinations. The 1992 Edition with 1992 Addenda of ASME Section XI, Table IWE 2500-1, Examination Category E-G, Item Number E8.20 requires a bolt torque or tension test for bolted connections that have not been disassembled, inspected, and reassembled during the inspection interval.-
III.
Code Requirement for Which Reliefis Reauested: Reliefis requested from performing the Code-required torque or tension test on the above identified pressure retaining bolting.
IV.
Basis for Relief: Each of these electrical penetrations receive a periodic 10 CFR 50 Appendix J, Option B test at least once per interval. The performance of the Type B test proves that the bolt torque or tension remains adequate under simulated accident pressure conditions to restrict leakage to acceptable limits.
Once a bolt in a containment penetration is torqued or tensioned, it should not be 1
subject to dynamic loading that could cause it to experience significant change.
The Appendix J testing is adequate to demonstrate that the design function is met.
Torque or tension testing is not required for ASME Section XI, Class 1,2, or 3 bolted connections or their suppons as pad of the inservice inspection program.
The ASME Code Committee recognized that these tests were not warranted, and the 1998 Edition of the ASME Section XI Code has removed the examination requirement.
Iof2
4 The alternate examination will ensure the bolt torque or tension remains adequate.
This will ensure the structural integrity and leak-tightness of this pressure retaining bolting.
V.
Alternate Examination: The electrical penetrations shall receive an Appendix J, test at least once every interval to ensure the bolt torque or tension remains i
adequate. This will ensure the structural integrity and leak-tightness of Class MC (Metallic Containment) pressure retaining bolting.
VI.
Justification for Granting Relief: Leak testing per 10 CFR 50, Appendix J will provide assurance of the integrity of pressure-retaining bolting and is an acceptable alternative to the 1992 Code required bolt torque or tension test.
Public health and safety will not be endangered; therefore, this relief request a
should be granted pursuant to the requirements of 10 CFR 50.55(a)(3)(i).
VII.
Implementation Schedule: This relief request is applicable to examinations performed using the 1992 Edition,1992 Addenda, of Section XI during the current inspection interval.
VIII. Relief Request Status: Awaiting NRC approval.
2 of 2 j