ND-18-0842, ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.xiv (Index Number 199)
| ML18173A030 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 06/21/2018 |
| From: | Yox M Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of New Reactors |
| References | |
| ITAAC 2.2.03.08c.xiv, ND-18-0842 | |
| Download: ML18173A030 (6) | |
Text
Southern Nuclear JUN 2 } 2Q>8 Docket No.:
52-026 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Michael J. Yox Regulatory Affairs Director Vogtie 3 & 4 7825 River Road Waynesboro, GA 30830 706-848-6459 tei 410-474-8587 ceii myox@southernco.com ND-18-0842 10CFR 52.99(c)(1)
Southern Nuclear Operating Company Vogtie Electric Generating Plant Unit 4 ITAAC Closure Notification on Completion of ITAAC 2.2.03.08c.xiv flndex Number 1991 Ladies and Gentlemen:
In accordance with 10 CFR 52.99(c)(1), the purpose of this letter is to notify the Nuclear Regulatory Commission (NRC) of the completion of Vogtie Electric Generating Plant (VEGP)
Unit 4 Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) Item 2.2.03.08c.xiv [Index Number 199] for verifying thatthe aluminum surfaces of the Nuclear Instrumentation System excore detectors are encased in a watertight stainless steel or titanium housing. The closure process for this ITAAC isbased on theguidance described in Nuclear Energy Institute (NEI) 08-01, "Industry Guideline for the ITAAC Closure Process under 10 CFR Part 52," which was endorsed by the NRC in Regulatory Guide 1.215.
This letter contains no new NRC regulatory commitments. Southern Nuclear Operating Company (SNC) requests NRC staff confirmation of this determination and publication of the required notice in the Federal Registerper 10 CFR52.99.
If there are any questions, please contact Tom Petrak at 706-848-1575.
Respectfully submitted.
Michael J. Yox RegulatoryAffairs Director Vogtie 3 &4
Enclosure:
Vogtie Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.2.03.08c.xiv [Index Number 199]
MJY/RAS/amw
U.S. Nuclear Regulatory Commission ND-18-0842 Page 2 of 3 To:
Southern Nuclear Operating Company/ Georgia Power Company Mr. D. A. Bost (w/o enclosures)
Mr. M. D. Meier Mr. D. H. Jones (w/o enclosures)
Mr. D. L. McKinney Mr. M. J. Yox Mr. D. L. Fulton Mr. J. B. Klecha Mr. G. Chick Mr. F. H. Willis Ms. A. L. Pugh Mr. A. 8. Parton Mr. W. A. Sparkman Mr. C. E. Morrow Ms. K. M. Stacy Mr. M. K. Washington Mr. J. P. Redd Ms. A. C. Chamberlain Mr. D. R. Culver Mr. T. G. Petrak Document Services RTYPE: VND.LI.L06 File AR.01.02.06 cc:
Nuclear Reoulatorv Commission Mr. W. Jones (w/o enclosures)
Ms. J. M. Heisserer Mr. C. P. Patel Mr. M. E. Ernstes Mr. G. J. Khouri Mr. T. E. Chandler Ms. S. E. Temple Ms. P. Braxton Mr. N. D. Karlovich Mr. A. J. Lerch Mr. C. J. Even Mr. F. D. Brown Mr. B. J. Kemker Ms. A. E. Rivera-Varona Ms. L. A. Kent Mr. P. B. Donnelly Ms. N. C. Coovert Ooiethorpe Power Corporation Mr. R. B. Brinkman
U.S. Nuclear Regulatory Commission ND-18-0842 Page 3 of 3 Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. 8. M. Jackson Dalton Utilities Mr. T. Bundros Westinqhouse Electric Company. LLC Dr. L. Orlani (w/o enclosures)
Mr. D. C. Durham (w/o enclosures)
Mr. M. M. CorlettI Ms. L. G. Iller Mr. D. Hawkins Ms. J. Monahan Mr. J. L. Coward Ms. N. E. Deangells Other Mr. J. E. Hesler, Bechtel Power Corporation Ms. L. Matis, Tetra Tech NUS, Inc.
Dr. W. R. Jacobs, Jr., Ph.D., GDS Associates, inc.
Mr. 8. Roetger, Georgia Public Service Commission Ms. 8. W. Kernlzan, Georgia Pubiic Service Commission Mr. K. C. Greene, Troutman Sanders Mr. 8. Blanton, Baich Bingham
U.S. Nuclear Regulatory Commission ND-18-0842 Enclosure Page 1 of 3 Southern Nuclear Operating Company ND-18-0842 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.2.03.08c.xiv [Index Number 199]
U.S. Nuclear Regulatory Commission ND-18-0842 Enclosure Page 2 of 3 ITAAC Statement Design Commitment:
8.C) The PXS provides RCS makeup, boration, and safety injection during design basisevents.
Insoections. Tests. Analvses:
xiv) Inspection will be conducted ofthe excore (source range, intermediate range, and power range) detectors.
Acceptance Criteria:
xiv) Areport exists andconcludes thatthe aluminum surfaces of the excore detectors are encased ina watertight stainless steel or titaniumhousing.
ITAAC Determination Basis Multiple Inspections, Tests, Analyses, andAcceptance Criteria (ITAAC) are performed to demonstrate that the Passive Core Cooling System (PXS) provides Reactor CoolantSystem (RCS) makeup, boration, and safety injection during design basis events. The subject ITAAC requires inspections of the excore (source range, intermediate range, and power range) detectors to verify aluminum surfaces of theexcore detectors areencased in a watertight stainless steel or titanium housing.
The Nuclear Instrumentation System (NIS) excore source range, intermediate range, and power range detectors' technical manual material specifications were visually inspected to verify that the aluminum surfaces of the excore detectors are encased ina stainless steel or titanium housing. The inspection concluded that all the NIS excore detectors' aluminum surfaces are encased in titanium housing.
Additionally, helium leak rate testing was performed by thevendor oneach of theexcore source range, intermediate range, and power range detectors to demonstrate that the excore detectors are encased in a watertight housing. Correlations were then made between gaseoushelium leakage and equivalent liquid water leakage based on the viscosity and surface tension differences between the twofluids. The correlationsaccounted for design basis accident pressure and temperature and considered the makeup of reactor coolant fluid compared to liquid water. The correlations showed that a helium leak rate of ^ 1xlO standard cubic centimeters persecond (std cc/sec), thevendor testacceptance criteria, would result in no liquid water leakage into the housing. Inspection of thevendor helium leak rate testresults showed that all excore detectorleakage rates weres 7.1 xlO std cc/sec, concluding thatthe excore detectors are encased in watertight housing.
Theresults of the inspections are documented in the NIS Excore Detector Inspection Report, (Reference 1). The results of the inspections conclude that the aluminum surfaces of the excore detectors are encased ina watertight stainless steel or titanium housing.
U.S. Nuclear Regulatory Commission ND-18-0842 Enclosure Page 3 of 3 ITAAC Finding Review In accordance with plant procedures for ITAAC completion, Southern Nuclear Operating Company (SNC) performed a review of all ITAAC findings pertaining to the subject ITAAC and associated corrective actions. This review found that there are no relevant ITAAC findings associated withthis ITAAC. The ITAAC finding review is included in the Vogtle Unit4 ITAAC Completion Package for ITAAC 2.2.03.08c.xiv (Reference 2) and available for NRC inspection.
ITAAC Completion Statement Based on the above information, SNC hereby notifies the NRC that ITAAC 2.2.03.08c.xiv was performed for Vogtle Unit 4 and that the prescribed acceptance criteria are met. Systems, structures, and components verified as part of this ITAAC are being maintained in their as-designed, ITAAC compliantcondition in accordance with approved plant programs and procedures.
References (available for NRC inspection)
- 1. 2.2.03.08c.xiv-U4-SumRep-Rev 0, "NIS Excore Detector Unit4 ITAAC 2.2.03.08c.xiv Inspection Report" 2.
2.2.03.08c.xiv-U4-CP-Rev0, ITAAC Completion Package