NL-19-0343, Relief Request FNP-ISI-RR-03: SNC Response to NRC Request for Additional Information

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Relief Request FNP-ISI-RR-03: SNC Response to NRC Request for Additional Information
ML19113A143
Person / Time
Site: Farley  Southern Nuclear icon.png
Issue date: 04/23/2019
From: Gayheart C
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-19-0343
Download: ML19113A143 (9)
v • d • e


Text

3535 Colonnade Parkway

~ Southern Nuclear Cheryl A. Gayheart Birmingham. AL 35243 Regulatory Affairs Director 205 992 5316 tel 205 992 7601 fax cagayhea@southemco com APR 2 3 2019 Docket Nos. : 50-348 NL-19-0343 50-364 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Joseph M. Farley Nuclear Plant- Unit 1 and 2 Relief Request FNP-ISI-RR-03 SNC Response to NRC Request for Additional Information Ladies and Gentlemen:

By letter dated November 30, 2018 (Agency wide Documents Access and Management System Accession Number ML18334A032), Southern Nuclear Operating Company (SNC) requested relief from certain requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI. This relief request, FNP-ISI-RR-03, proposed an alternate examination coverage of certain welds during the fourth 10-year inservice inspection program interval for Farley Nuclear Plant Units 1 and 2.

By email dated March 7, 2019, the U.S. Nuclear Regulatory Commission (NRC) staff notified SNC that additional information is needed for the staff to complete their review.

Enclosure 1 to this letter provides the SNC response to the NRC request for additional information (RAI).

This letter contains no NRC commitments. If you have any questions, please contact Jamie Coleman at 205.992.6611.

Respectfully submitted, Clieryl . yheart Regulatory Affairs Director Southern Nuclear Operating Company CAG/ndj/sm

Enclosure:

SNC Response to NRC Request for Additional Information (RAI) - Relief Request FNP-ISI-RR-03

U.S. Nuclear Regulatory Commission NL-19-0343 Page 2 cc: Regional Administrator, Region II NRR Project Manager- Farley Nuclear Plant Senior Resident Inspector- Farley Nuclear Plant RTYPE: CFA04.054

Joseph M. Farley Nuclear Plant - Unit 1 and 2 Relief Request FNP-ISI-RR-03 SNC Response to NRC Request for Additional Information Enclosure SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-181-RR-03 NRC RAI1 Only the materials of construction for Category 8-F Item 85.70 welds were listed in the submittal.

(a) Please discuss the materials of construction (e.g., ASME material specifications) of the other subject welds and adjacent components (nozzles and pipes) in Tables RR-03.1 and RR-03.2 of the relief request.

(b) If Alloy 82/182 filler metal was used, discuss whether the subject welds have been mitigated to minimize the potential for primary water stress corrosion cracking.

SNC Response to RAJ 1 (a)

Table RR-03.1 Component ID Component Material Reference ALA 1-41 03-4 Valve SA-182 F316 U166878 Weld ER 308L or E308L Grinnell Spool Traveler 01B13CCA27 Pipe SA-376, TP304 or 316 Grinnell Spool Traveler 01B13CCA27 ALA 1-41 04-4 Valve SA-182 F316 U166878 Weld ER308L Grinnell Spool Traveler 01B13CCA22 Pipe SA-376 TP304 Grinnell Spool Traveler 01B13CCA22 ALA 1-41 04-5 Valve SA-182 F316 U166878 Weld ER308L Grinnell Spool Traveler 01B13CCA22 Pipe SA-376 TP304 Grinnell Spool Traveler 01B13CCA22 ALA 1-41 08-8-RB Valve SA-182 F316 U166880 Weld ER 308L Grinnell spool Traveler 01E21CCA5 Pipe SA-376, TP304 or 316 Grinnell spool Traveler 01E21CCA5 ALA 1-41 08-14BW -RB Tee SA-403 WP304 or 316 U259976 Weld ER 308L Daniels spool traveler 01 B13CCA 17E1523 Pipe SA-376 TP316 Daniels spool traveler 01 B13CCA 17E1523 ALA 1-4202-3-RB Elbow SA-403 WP304 or 316 U259449 Weld ER 308L or ER 316L FS-350N Pipe SA-376 TP304 Grinnell spool traveler 01B13CCA22 E-1

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03 (a) Continued Table RR-03.1 Continued Component 10 Component Material Reference ALA 1-4202-4-RB Valve SA-182 F316 U166878 Weld E 308L I ER 308L Grinnell spool traveler Q1813CCA22 Pipe SA-376, TP304 Grinnell spool traveler Q1813CCA22 ALA 1-4204-4 Valve SA-182 F316 U166878 Weld E 308L I ER 308L Grinnell Spool Traveler Q1E21CCA27 Pipe SA-376 TP304 or 316 Grinnell Spool Traveler Q1E21CCA27 ALA 1-4204-5-RB Valve SA-182 F316 U166878 Weld E 308L I ER 308L Grinnell Spool Traveler Q1E21CCA27 Pipe SA-376 TP304 or 316 Grinnell Spool Traveler Q1E21CCA27 ALA 1-4209-11 BW -RB Flange SA-182 Gr. F316 (1)

Weld ER308 (1)

Pipe (1)

SA-376 TP304 Note (1 )- Per Westinghouse ema1l, the p1pe and flange were fabncated at the pump manufacturer.

Table RR-03.2 Component 10 Component Material Reference APR1-4101-8 Valve SA-182 Gr F316 U214167 Weld E 308L I ER 308L Grinnell spool traveler Q2813CCA16 Pipe SA-376 TP304 or 316 Grinnell spool traveler Q2813CCA16 APR1-4102-2-RB Pipe SA-376 TP304 or 316 U214253 WO# M5750 Weld E308L I ER308L WO# M5750 Pipe SA-376 TP304 or 316 U214253 WO# M5750 APR1-4104-30 Valve SA-182 Gr F316 U206344 Weld E 308L I ER 308L Grinnell spool traveler Q2E21CCA27 Pipe SA-376 TP316 U213288 Grinnell spool traveler Q2E21CCA27 E-2

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03 (a) Continued Table RR-03.2 Continued Component ID Component Material Reference APR1-4106-8-RB Valve SA-182 Gr F316 U206343 Weld E 308L I ER 308L Grinnell spool traveler Q2813CCA6 Pipe SA-376 TP316 U213289 Grinnell spool traveler Q2813CCA6 APR1-4106-11-RB Branch Connection SA-403 WP304 or 316 Pipe Specification SS-1109-02 Weld E 308L I ER 308L Grinnell spool traveler Q2813CCA6 Pipe SA-376 TP304 or 316 U213289 Grinnell spool traveler Q2813CCA6 APR1-4108-11-RB Valve SA-182 Gr. F316 U206348 Weld 31 ER 308L Grinnell spool Traveler Q2813CCA5 Pipe SA376 TP304 Grinnell spool Traveler Q2813CCA5 APR1-4108-12-RB Valve A182 Gr. F316 U206348 Weld ER 308L Grinnell Spool Traveler E21CCA5-2-6748 Pipe SA-376 TP304 Grinnell Spool Traveler E21 CCA5-2-6748 U214156 APR1-41 08-13-RB Valve SA-182 Gr. F316 U205173 Weld ER 308L or ER 316L Grinnell Spool Traveler E21 CCA5-2-6748 Pipe SA-376 TP304 or 316 Grinnell Spool Traveler E21CCA5-2-6748 U214156 APR 1-4301-8 Valve SA-182 Gr. F316 U214167 Weld E 308L I ER 308L Grinnell Spool Traveler Q2813CCA16 Pipe SA-376 TP304 Grinnell Spool Traveler Q2813CCA16 APR1-4302-11-RB Elbow SA-403, WP304 or 316 U214050 Weld ER 308L or ER 316L FS-350N Pipe SA-376 TP304 OR TP316 U214050 E-3

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03 (a) Continued Table RR-03.2 Continued Component ID Component Material Reference APR 1-4302-12-RB Elbow SA-403, WP304 or 316 U214050 Weld ER 308L or ER 316L FS-350N Pipe SA-376 TP304 or TP316 U214050 APR1-4304-18 Valve SA-182 Gr. F316 U206344 Weld E 308LI ER 316L Grinnell Spool Traveler Q2E11CCA22 Pipe SA-376 TP316 Grinnell Spool Traveler Q2E11CCA22 APR1-4304-19-RB Valve SA-182 Gr. F316 U206344 Weld E 308L I ER 308L Grinnell Spool Traveler Q2E11CCA22 Pipe SA-376 TP316 Grinnell Spool Traveler Q2E11CCA22 APR1-4307-21 BC-RB Branch connection SA-182 F304 or 316 U214253 Weld ER 308L Grinnell Spool Traveler Q2E21 CCA21-E7808 Pipe SA-376 TP 304 OR 316 Grinnell Spool Traveler Q2E21 CCA21-E7808 APR1-4500-1 Branch connection SA-182 F316 Grinnell spool Traveler 2B13CCAE5365E Weld ER 308L or ER 316L Grinnell spool Traveler 2B13CCAE5365E Pipe SA-376 TP304 Grinnell spool Traveler 2B 13CCAE5365E APR2-4511-10 Flange SA-182 F316 Grinnell spool traveler Q2E11 CCB32-6 Weld ER308L Grinnell spool traveler Q2E11 CCB32-6 Pipe SA-376 TP304 Grinnell spool traveler Q2E11 CCB32-6 APR2-4511-11 Valve SA-182 F316 U206344 Weld ER308L Grinnell spool traveler Q2E11CCB32 Pipe SA-376 TP316 Grinnell spool traveler Q2E11CCB32 U214081 E-4

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03 Table RR-03.2 Continued Component ID Component Material Reference APR2-4511-12 Tee SA-403 WP 304 or 316 Grinnell spool Traveler 02E11 CCB32-6 Weld ER-308L Grinnell spool Traveler Q2E11 CCB32-6 Elbow SA-403 WP 304 or 316 Grinnell spool Traveler Q2E11 CCB32-6 (b) Filler metal Alloy 82/182 was not used as indicated in the above table.

RAI No.2 Discuss any factors or other measures that could ensure or monitor the structural integrity of the subject welds, given that certain volume of the subject welds could not be examined. The other measures may include the reactor coolant system leakage detection systems, routine system leakage tests in accordance with IWA/B-5000 of the ASME Code, Section XI, boric acid monitoring programs, operator walkdowns, and any augmented examinations.

SNC Response to RAI 2 The Class 1 pressure testing is performed per IWB-5000 during startup from refueling outages. In accordance with the Boric Acid Corrosion Control Program, Operations and Engineering personnel perform boric acid walkdowns inside containment early in the outage to identify potential leakage areas. Online monitoring and trending is performed on the identified and unidentified leakage in the RCS system per Technical Specification Surveillance Requirement 3.4.13.1.

The Class 2 pressure testing is performed per IWC-5000 once per period. In accordance with the Boric Acid Corrosion Control Program, Operations and Engineering personnel perform boric acid walkdowns inside containment early in the outage to identify potential leakage areas. Additionally, the MRP-192 programs inspects additional locations on Class 2 E11 system.

RAI No.3 The submittal states that no recordable indications were identified during examination of the Category R-A and Category B-F components. Please confirm whether recordable indications were identified in any of the other subject welds.

SNC Response to RAI 3 All of the datasheets were reviewed for the 4'h interval examinations listed in tables RR-03.1 and RR-03.2. No recordable indications were identified on the subject welds.

RAI No.4 The second paragraph of Applicable Code Requirements states The extent of examination requirement for Examination Category B-J, Item Numbers B9.11 and B9.21, E-5

Enclosure to NL-19-0343 SNC Response to NRC Request for Additional Information (RAI)

Relief Request FNP-ISI-RR-03 per Table IW8-2500-1, requires a surface and volumetric examination of essentially 100% of the weld length." However, 89.21 only requires a surface examination method.

Additionally, there does not seem to be any welds identified as 89.21 in the submittal.

Please confirm whether any 89.21 welds were supposed to be included in the submittal.

SNC Response to RAI 4 There were no limited exams in the Category 8-J, Item Number 89.21.

E-6

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