IR 05000424/1988045
| ML20196C422 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 11/15/1988 |
| From: | Blake J, Newsome R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20196C412 | List: |
| References | |
| 50-424-88-45, NUDOCS 8812080012 | |
| Download: ML20196C422 (16) | |
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IJNITED STATES
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E NUC aAH REGULATORY COMMISSION NE REGION 11
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101 MARIETTA ST., N.W.
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ATLANTA. GEORGIA 30323 Report No.:
50-424/88-45 Licensee:
Georgia Power Company P. O. Box 4545 Atla:ita, GA 30302 Docket No.:
50-424 License No.:
NPF-68 Facility Name:
Vogtle 1 Inspection d.
October 17-21, 1988 Inspector:
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// [ 6 pH.
ome Date Signed
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///dd Approved by -
v J.
leKe, Chiet 9 ate Signed
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M er'als and Processes Section
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gi eering Branch iv'sion of Reactor Safety S(MiARY Scope:
This routine, unannounced inspection was conducted in the areas of inservice inspection (151) including review of the ISI program, review of the ISI plan for this outage, review of NDE 3rocedures including procedures for eddy current examination anc visual examination of component supports and hangers, review of aersonnel qualificaticas, review of NDE equipment and material certification records, observation of in process examinations, and review of completed examination records.
Results:
In the areas inspected, violations or deviations were not identified.
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The licensee's ISI program appears to be adequate in all areas reviewed.
Management a) pears to be very involved in the administra-tion of the program anc staffing needs appear tn be fully adequate.
The licensee s control of examination data, records of personnel qualifications, and material certification records made these records easily accessible and well managed.
The examination personnel appeared to be well qualified av cognizant of examination require-ments.
In general, the examination procedures were adequate, however weaknesses were found in the visual examination procedures relative to the examination of component supports and hangers and the engineering evaluation of these items to determine acceptability.
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One unresolved item was identified involving unrecorded support springcansettings, paragraph 2.d.(1)(a).
One inspector followup item was identified involving visual exaniination procedures relative to information recording and engineering evaluation criteria for hangers and supports, paragraphc.b.(5).
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REPF DETAI
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Persons Contacted Licensee Employees
"A. Caudill IS1 Senior Plant Engineer
- G. Freder ic,k, QA Site Manager, Operations
- T. Creen Plant Support Manager S. Lee flant Eri incer
- W. Nicklin, Regu$atory Corapliance Supervisor, NSAC L
- K. Pointer,lder, NSAC ManagerSenior Plant Engineer, NSAC
- J.
Swartzwe
"J. Williams, Plant Engineering Supervisor Other licensee employees contacted during this inspection included engineers, security force members, technicians, and craftsmen, ive personnel.
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Other Organizations Southern Company Services,CompanISI Senior Inspector
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R. May J. Liou,i,ANII, Coordinator, Westinghouse flectric Corp Hartford Insurance A. Imme ISI
- D. Smith, Manager Joint Generation, Oglethorpe Power Corp.
NRC Resident Inspector
- J. Rogge, Senior Resident Inspector, Operations
- Attended exit interview Acronyms and initialisms used throughout this report a listed in the last paragraph.
2.
InserviceInspection(ISI) Unit 1
The inspector examined documents, activities, and records as indicated
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below to determine whether ISI was being conducted in accordance with l
Tpplicable )rocedut is, regulatory requirements and licensee cemitments.
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.e applica)le code for ISI is American Society of Mechanical Engineers i
Section XI, 1983 edition with doiler and Pressure Vessel (ASME B&PV) Code,(W) has the responsibility for addenda through Summer 1983.
Westinghouse the eddy current examination of steam generator tubing and is utilizing automated evaluation equipment in addition to W, Zetec, and Echoram Southern Company Services p(ersonnel for examination data evaluations.SCS) has the responsibility for th activities and is utilizing SCS and Ebasco personnel to conduct the examination.
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InserviceInspection,ProgrammaticReview(73051)
The insp'ector reviewed the below listed documents relating to the licensee s Inservice Inspection (ISI) program'(Plan) in the areas of:
program approval; QA program requirements including org(anizational structure; audit requirements general QA requirements examination reports, control of deviation;s from established program; quality documentation and identification of components); work and quality inspection procedures; control of processes; corrective action document control; control of examinations and examination equipme;nt; quality records; inspection scope; inspection intervals; personnel qualifications; and, NDE records including provisions for storage.
ISI Outage Plan First Refueling Outage (Period 1/ Outage 1)
VEGP/00411-C (R4) Preservice and Inservice Inspection Program SCS/ Inspection, Testing, and Engineering Policy and Procedures Manual Procedure Title 09.5-0(RO)
Documents and Records 09.5-51(R1)
Final Reports - Preparation, Approval and and fubmittal 09.5-100(R2)
Quality Assurance Record Control 09.6-50(R1)
Procurement of Nondestructive Examination Materials and Equipment 09.7-50 Nonconformance Item 09.50-0 On-Site Activities Conducted By ITE 09.50-1 On-Site Data Review 09.50-2 On-Site Data Control 09.50-3 On-Site Control and Issuance of Non-destructive Examination (NDE) Documents and Equipment
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09.50.4(R2)
Indication Notifications l
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ReviewofProcedures(73052)
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The inspector reviewed the procedures indicated below to determine
whether the procedures were consistent with regulatory requirements
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and licensee commitments.
The procedures were also reviewed in the areas of procedure approval, requirements for qualification of NDE I
personnel, and compilation of required records; and if applicable, I
division of responsibility between the licensee and contractor
personnel if contractor personnel are involved in the ISI effort.
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i Procedure Title AUX-H/F/V-300(R4)
Procedure (Written Practice) for Qualifica-tion and Certification of Nondestructive Examination Personnel
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Procedure Title (cont'd)
AUX-H/F/V-303(RO)
Control of Measuring ciid Test Equipment AUX-V-306(R1)
Measuring and Recording Search Unit Location During Manual Ultrasonic Examinations AUX-V-307(R2)
Preservice and Inservice Inspection Documentation UT-V-404(R2)
Manual Ultrasonic Examination of Full-Penetration Welds i
UT-V-406(R2)
Manual Ultrasonic Examination of /,ast Stainless Full-Penetration Welds
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UT-V-411(R2)
Manual Ultrasonic Examination of Pressure Vessel Welds (2 Inches to 12 Inches in Thickness)
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UT-V-455(R1)
Qualification of Manual Ultrasonic Instruments UT-V-465(R2)
Ultrasonic Thickness Examination Procedure MT-V-505(R1)
Dry Powder Magnetic Particle Examination:
Yoke Method MT-V-506(RI)
Wet Fluorescent Magnetic Particle Examina-tion:
Yoko Method i
PT-V-605(R1)
Color Contrast Solvent-Removable Liquid i
i PenetrantExamInationProcedure
VT-V-715(RI)
Visual Examination (VT-1)
VT-V-725(R1)
Visual Examination (VT-2)
VT-V-735(R1)
VisualExamination(VT-3)
i MRS2.4.2 Gen-28(R3)
Digital Multi-Frequency Eddy Current Ins)ection of Preservice and Inservice Heat Exc1 anger Tubing
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DAT-GYD-001(R2)
Data Analysis Guidelines with Addendum #1 85052-C(RO)
Visual Examination of Component Supports and Hangers i
54171-C(RS)
Inspection of Component Supports and Engineering Evaluation
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All procedures listad above, except 85052-C and 54171-C, had been reviewed during pravious NRC insaections.
Only current revisions were reviewed durhg this inspection.
(1) The inspecter reviewed the Ultrasonic procedures to ascertain whether the" had been reviewed and approved in accordance with the licensta's established QA procedures.
The above procedures were revie'ied for technical adequacy and conformance with the ASME Code,Section V, Article 5, and other license commitments /
requircaents in the following areas:
type of aaparatus used; exter', of coverage of weldment; calibration requirements search uni',4 ; beam angles; DAC curves; reference level for monitoring discontinuities; method for demonstrating penetration; limits for evaluating and recording indications; recording significant indications; and, acceptance limits.
(2) The inspector reviewed the Eddy Current procedure for technical content relative to:
multichannel examination unit-multichannel examination indication equipment is specif'ied; examination sensitivity; material examination; method of calibration; permeability; method ofcalibration s acceptance criteria.
(3) The inspector reviewed Procedure PT-V-605 to ascertain whether it had been reviewed and approved in accordance with the licensee'sestablishedQAprocedures.
The procedure was reviewed for technical adequac Section V, Article 6, y and conformance with the ASME Code,and oth in the following areas:
specified method; penetrant material identification; penetrant materials analyzed for sulfur; 3ene-trant materials analyzed for total halogens; acceptab'e pre-examination surface; drying time * method of penetrant application surface temperature; solvent removal surface drying prio;r to developing; type of developer; ex; amination technique; evaluation technique; and, procedure requalification.
(4) The inspector reviewed the Magnetic Particle procedures to ascertain whether they had been reviewed and approved in accordance with the licensee's established QA procedures.
The procedures were reviewed for technical adequacy and for conformance with the ASME Code,Section V, Article 7, and other licensee commitments / requirements in the following areas:
examination method; contrast of dry powder particle color with background; surface temperature; suspension medium for wet particles; viewing conditions; examination overlap and directions; pole or prod spacing; current or lifting power (yoke); and, acceptance criteri.
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(5) The inspector reviewed the visual examination procedures to determine whether they contained sufficient instructions to asse that the following parameters were specified and controlled within the limits permitted by the applicable code, standard or any additional specification requirement:
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directv}sual,remotevisualortranslucentvisual; application-hydrostatic testing,, fabrication procedure, visual examination of welds, leak testing, etc. ; how visual examination is to be performed; type of surface condition available; method or tool for surface preparation, if any; whether direct or renote viewing is used; special illumination, instruments, or equi? ment to be used, if any; sequence of performing examination, w1en applicable; data to be tabulated if any acceptance criteria is specified and consistent with the appli; cable code section or controlling specification; and, report form completion.
During the review of Procedure 85052-C, Revision 0, Visual Examination of Component Supports and Hangers, the NRC inspector noted that one of the unacceptable criteria for spring type supports and hangers is improper hot or cold positions.
The procedure gave no specific information relative to what constituted an acceptable spring position and does not require that the spring position indicator dimension be recorded during the course of the examination.
Discussions with licensee personnel revealed that a parallel Procedure 54171-C Revision 6, Inspection of Component Supports and Enginee, ring Evaluation, was intended to be used for the evaluation of spring type hangers and supports.
The NRC inspector reviewed this procedure and cnneluded that the procedure dealt primarily with snubbers and did not contain sufficient engineering evaluation criteria to determine the acceptability of spring type hangers and supports especially in those cases when the spring position i dicator dimension is unknown.
Further discussions with n
licensee personnel resulted in a commitment by the licensee to revise these two procedures such that the spring Josition dimension of spring type supports and hangers would ae recorded at the time of item examination and that specific criteria relative to determining the acceptability of this type hanger or support, based on the spring indicator position and the temperature and system load at the time of examination, would be included as part of the procedures revisions, By the conclusion of this NRC ins)ection,ified as Inspector Followup Item (IFI)
the revisions had not been completed.
This item will ae ident 50-424/88-45-02, Revisions Te Procedures 85052-0 and 54171-C.
c.
Observation of Work and Work Activities (73753)
The inspector observed work activities and reviewed certification records of equipment, materials, and NDE personnel which had been ed will be utilized during the required ISI examinations during this
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outage.
The observations and reviews conducted by the inspector are documented below.
(1) The inspector observed calibration activities and the in process ultrasonic examinations being conducted on Weld 11201-V6-001-W02 RV Flance to Head Weld.
The observations were compared with the applicable procedures and the Code in the following areas:
availability (NDE) procedure;i d t of and compliance with approved Nondestructive Examination use of knowledgeable NDE personnel; use of NDE personnel qualif e o the proper level; type of apparatus used; extent of coverage of weldment; calibration requirements; search units; beam angles; DAC curves; reference level for monitoring discontinuities; method of demonstrating penetration * limits of evaluating and recording indications; recordingsIgnificantindications;andacceptancelimits.
The following listed ultrasonic e and materials certification records were reviewed: quipment Ultrasonic Instruments Manufacturer /Model Serial No.
Sonic /MK1 14494E Sonic /MK1 06216E KK/USK-7 27276-1122 KK/USK-7 27276-4317-2 KK/USK-7 27276-4951-2 The inspector reviewed spectrum analysis data for ultrasonic transducers with serial numbers 031326, L30469, L24611 and K06626.
Ultrasonic Couplant Batches 8767 and 8871, Sonotrace 40.
Ultrasonic Calibration Blocks ISI-D-342A SS 12" Sch. 40 ISI-D-335A SS 4" Sch. 40 ISI-D-413A SS
- " Sch, 120 ISI-D-344A SS 14" Sch. 40 ISI-D-303A SS 4" Sch, 160 ISI-D-410A CS 5" Flat Block ISI-D-409A CS 3-3/4" Flat Block ISI-D-400A CS 7" RV Head Block Ultrasonic Rompas Blocks 86-4329 and 793391 (
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(2) The inspector reviewed the below listed liquid penetrant materials certification records to ascertain 'if the sulfur and halogen content of the material was within acceptable content limits.
Materials Batch Number Liquid Penetrant 870037 Cleaner / Remover 87E001 Developer 87E055, 86LO45 (3) The inspector observed the magnetic particle examinations indicated below.
The observations were compared with the applicable procedures and the code in the following areas:
examination methods; contrast of dry powder particle color with surface temperature-suspension medium for wet background; if applicable; particles, viewing conditions; examination overlap (yoke); and acceptance criteria. pacing; current or lifting and directions; pole or prod s power Weld ID Dwg. No.
Description 11201-V6-001-W02 11201-V6-001 Flange to Head 240* - 360'
11201-V6-001-W206 11201-V6-001 RV Head Lug @ 240 The inspector reviewed documentation indicating that a 10 pound lift test had been performed on magnetic particle AC yokes 43530 and 6661.
A review of magnetic aarticle material certification records for batch number 86M058 indicated the sulfu, aad halogen content of the material was within acceptable content limits.
(4) The inspector observed the Eddy Current activities indicated below.
The observations were compared with the applicable procedures and the Code in the following areas:
method for maximum sensitivity is applied method for determining material permeability; method of examination has been recorded; examination equipment has been calibrated in accordance with the applicable performance reference; amplitude and phase has been calibrated with the proper applicable calibration reference and is recalibrated at predetermined frequency; required coverage of steam generator tubes occurs during the examination; acceptance criteria is specified or referenced and is consistent with the procedure or the ASME Code; and, results are consistent with acceptance criteria.
(a) In process tube data acquisition, including calibration confirmation and tube location verifications was observed for the following steam generator tubes:
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SG-1 SG-4
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Tube 10 Tube ID Row Column Row Column
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67
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69
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70
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67
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69
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69
10
67
15
68
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119
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110
76
100
74
90
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(b) In process Eddy Current inspection data evaluation, including calibration confirmation, was observed for the below listed Steam Generator tubes.
Data analysis is accomplished by first having the data evaluated by the W
Intelligent Eddy Current Data Analysis (IEDA) automated'
analysis system.
The IEDA evaluation is designated as the
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Primary analysis.
Following the evaluation by the i
automated IEDA system, the data is evaluated by conventional manual qualified evaluators.
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evaluation of the data is Jesignated as the Secondary
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Any differences between the Primary and Secondary evaluations is resolved by an independent manual
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examination of the conflicting evaluations.
A qualified analyst is assigned the task of resolving the differences between the Primary and Secondary evaluations and is i
designated e the Resolution analyst.
PRIMARY ANALYSIS i
SG-1 SG-4 Row Column Row Column
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57
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58
64
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56
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SG-1 SG-4 Row Column Row Column (cont'd)
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64 SECONDARY ANALYSIS SG-1 SG-4 Row Column R_ow Column o
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71
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57
69
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71
25
69
35
71
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76
55
74
115
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79
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74 RESOLUTIONS SG-1 SG-4 Row Column Row Column
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34
19
36
22
36
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96 (c) During the observations of the analysis activities for the above listed tubes, the inspector jointly evaluated a J
sample of the data with the secondary and resolution analysts.
No significant discrepancies were note,
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(2)
Certification records for Eddy Current calibration standards with serial numbers ISI-D-806A and ISI-D-806D were reviewed for material-type, correct fabrication, and artificial flaw location / size.
(5) The insaector reviewed the qualification documentation for the below listed examiners in the following areas:
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period of certification; y qualified to perform;p oyer s n person certified; activit effective signature of emplo representative; basis used for certification;yer's designated and annual visual acuity, color vision examination, and periodic recertification.
Method tevel Company Examiner UT PT MT EC VT SCS BLD II II II
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SCS RRS II II II
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EBASCO GN II II II II
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SCS MSC II II II
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SCS CFS II II II
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SCS JCB II II II
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EBASCO MH II II I
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SCS RLK III III II
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SCS NLH II II
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SCS GB0 II II II
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EBASCO JTL II II II II
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EBASCO MNV II II II
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W WDG II
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W FDG III
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W KAI IIA
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ECHURAM SFR IIA -
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ECH0 RAM WJP IIA
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ZETEC RAN III
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ZETEC CMM IIA
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d.
Inservice Inspection, Data Review and Evaluation (73755)
(1) Records of completed nondestructive examinations were selected and reviewed to ascertain whether:
themethod(s) technique and extLit of the examination complied with the ISI plan and applicable NDE procedures; findings were properly recorded and evaluated by qualified personnel; programmatic deviations were recorded as recuired; personnel, instruments calibration blocks and NDE materials (penetrants, couplants),were designated.
Records selected for this review are listed belo.
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Drawing No.
Weld No.
NDE Method ISI-11208-V4-001 11208-V4-001-W01 UT ISI-11208-P6-002 11208-P6-002-WO3 PT ISI-11208-P6-002 11208-P6-002-WO4 PT ISI-11205-E6-001 11205-E6-001-WO4 PT ISI-11205-P6-001 11205-P6-001-W01 PT ISI-11204-V6-001 11204-V6-001-WO3 UT 151-11202-001 11202-001-1 UT ISI-11202-001 11202-001-4 UT 151-11202-001 11202-001-17 UT 151-11202-231 11202-231-38 UT 151-11202-231 11202-231-39 UT 151-11202-231 11202-231-46 UT ISI-11202-001 11202-001-1 PT 15I-11202-001 11202-001-4 PT
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ISI-11202-001 11202-001-17 PT
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ISI-11202-001 11202-001-24 PT 151-11202-231 11202-231-38 PT 151-11202-231 11202-231-39 PT ISI-11202-231 11202-231-46 PT 151-11205-009 11205-009-18 PT 151-11205-009 11205-009-22 PT ISI-11206-004 11206-004-4 PT ISI 11206-004 112C5-004-17 PT ISI-11208-123 11208-123-7 UT 151-11208-123 11208-123-21 UT 151-11208-123 11208-123-12 UT 15I-11208-123 11208-123-55 UT 15I-11208-123 11208-123-5 UT 151-11208-137 11208-137-1 UT 151-11208-123 11208-123-5 PT 151-11208-123 11208-123-7 PT 151-11208-123 11208-123-12 PT ISI-11208-123 11208-123-21 PT 151-11208-411 11208-411-45 PT 151-11204-199 11204-199-1 UT 151-11205-004 11205-004-2 UT 151-11205-004 11205-004-2LD UT 151-11206-004 11206-004-4 UT 151-11206-004 11206-004-17 UT 151-11208-123 11208-123-33 UT 151-11204-039 11204-039-1 UT 151-11205-008 11205-008-80 PT 151-11205-008 11205-008-82 PT 151-11208-123 11208-123-33 PT 151-11205-005 11205-005-27 PT V1-1202-001-H003 11202-01-H003 VT V1-1202-009-H008 11202-009-H008 VT V1-1202-011-H008 11202-011-H008 VT V1-1202-013-H008 11202-013-H008 VT V1-1202-181-H020 11202-181-H020 VT V1-1205-003-H019 11205-003-H019 VT
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Drawinc No.
Weld No.
NDE Method (cont' c )
ISI-11205-005 11205-005-H004 VT 151-11205-005 11205-005-H013 VT 151-11205-005 11205-005-H016 VT 151-11205-007 11205-007-H012 VT 151-11208-123 11208-123-H028 VT ISI-11204-V6-001 11204-V6-001-502 VT ISI-11204-V6-001 11204-V6-001-503 VT 151-11205-008 11205-008-79 PT 151-11205-010 11205-010-6A PT 15I-11205-010 11205-010-7 PT ISI-11208-137 11208-137-1 PT 151-11301-104 11301-104-H007 VT 151-11301-001 11301-001-1 MT 151-11301-001 11301 001-2 MT 151-11301-001 11301-001-3 MT 151-11301-001 11301-001-4 MT 151-11301-001 11301-001-5 MT 151-11301-001 11301-001-6 MT 151-11301-001 11301-001-7 MT 151-11301-001 11301-001-8 MT ISI-11301-001 11301-001-9 MT 151-11301-001 11301-001-10 MT ISI-11301-001 11301-001-13 MT 151-11301-104 11301-104-13 MT 151-11301-107 11301-107-1 MT 151-11301-107 11301-107-2 MT 151-11301-107 11301-107-6 MT 151-11301-107 11301-107-13 MT (a) During the review of the visual examination data sheets for supports and hangers that have spring cans, the NRC inspector noted that these items were marked satisfactory on the data sheets even though there was no spring can dimension setting recorded and there was no indication as to system status, i.e., hot or cold.
The inspector discussed these omissions with cognizant licensee personnel in an attempt to determine how these items were evaluated and specifically to determine if an adequate evaluation of these items could be made if the spring can dimension and system status were not known.
During these discussions, it was determined that if the system status was unknown and the spring can setting dimension were not known that it would not be possible to determine whether the support or hanger is in an acceptable configuration.
Following the above discussions the NRC inspector requestea the licensee to determi,ne how many supports and hangers of this type had been examined.
The licensee
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determined that a total of 31 suaports and hangers of this type had been examined without tie spring can dimension or the system status being recorded.
Of the 31 items, 9 of the items were ASME Code required and the remaining 22 were
examined due to other licensee commitments.
The NRC inspector requested that the supports and hangers f
be re-examined for spring can dimension position and that
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the system status be determined for each item.
The
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licensee agreed to re-examine these items, however, at the
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termination of this NRC inspection all items had not been
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re-examined.
The ASME Code required sup) orts and hangers (9 total) had been re-examined with eig1t of the items apparently falling into an acceptable category and one item l
requiring further engineering evaluation.
r The NRC iaspector informed the licensee that pending final determination of the questionable items and subsequent review of the corrective actions taken by the licensee, that this matter would be identified as Unresolved Item 50-424/88-45-01, Unrecorded Support Spring Can Readings.
(b) The inspector compared a randomly selected sample of current NDE examination results with historical examination results.
No significant discrepancies were noted.
(2) Eddy Current Examination of Steam Generator Tubing (a) The inspector reviewed a sample of tha records of the steam generator tubiag eddy current, oninations.
The reviews were compared with the a the Code in the following areas:pplicable procedures and the multichannel eddy current examination equipment has been identified; materlal
)ermeability has been recorded; method of examination has
)een recorded; and, results are consistent with acceptance criteria.
(b) A sample of the current examination results were compared with preservice examination results.
No major i
discrepancies were noted.
(c) At the conclusion of the NRC inspection all examinations had not been completed.
The inspector discussed the f
program and status with the licensee and the preliminary r
examination status for the steam generators is listed
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below.
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SG-1 SG-4 Tubes examined 754 821 Tubes with >20% indications
4 Tubes previously plugged
4 No violations or deviations were identified in this area of inspection.
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3. Exit Interview The inspection scope and results were summarized on October 21, 1988, with those persons indicated in paragraph 1.
The inspector described the areas inspected ar.d discussed in detail the inspection results listed below.
Proprietary information is not contained in this report.
Dissenting comments were not received from the licensee.
Unresolved Item 50-424/88-45-01, Unrecordea Support Spring Can Readings, paragraph 2.d.(1)(a).
Inspector Followup Item 50-424/88-45-02, Revisions to Procedures 85052-0 and 54171C, paragraph 2.b.(5).
4.
Acronyms and Initialisms ASME American Society of Mechanical Engineers
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B&PV Boiler and Pressure Vessel
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DAC Distance Amplitude Curve
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DWG Drawing
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EC Eddy Current
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Identification
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I.D.
Inside diameter
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IFI Inspector Followup Item
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ISI Inservice inspection
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ITE Inspection Krautkramer, Testing and Engineering
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KK
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MT Magnetic particle
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NDE Nondestructive Examination
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No.
Number
-
NPF Nuclear Power Facility
-
NRC Nuclear Regulatory Commission
-
-
QA Quality Assurance
-
Revision R
-
RV Reactor Vessel
-
SCS Southern Company Services
-
-
SS Stainless Steel
-
UT Ultrasonic
-
VEGP Vogtle Electric Generating Plant
-
VT Visual
-
W Westinghouse Electric Corporation
-