IR 05000416/1978007
| ML19249E477 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 04/27/1978 |
| From: | Costello J, Herdt A, Mcfarland C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II), NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| Shared Package | |
| ML19249E476 | List: |
| References | |
| 50-416-78-07, 50-416-78-7, 50-417-78-07, 50-417-78-7, NUDOCS 7910010555 | |
| Download: ML19249E477 (4) | |
Text
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Report Nos.:
50-416/78-7 and 50-417/78-7 Docket Nos..
50-416 and 50-417 License Nos.:
CPPR-118 and CPPR-119 Categories:
A2 and A2 Licensce:
Mississippi Power and Light Company Post Of fice box 1640 Jackson, Mississippi 39205 Facility Name:
Grand Gulf Nuclear Station, Units 1 and 2 i
Inspection at:
Grand Gulf, Mississippi Inspection conducted:
Ap ril 19-20, 1978 (
Inspector:
C. R. McFarland Actoapanying Personnel:
Dr. J. F. Costello, SD:
Engineering Methodology Standards Branch H. M. Fontecilla, NRR:
Environmental Evaluation Branch Dr. T. Fujita, University of Chicago, Department of Geosciences, Aerial Observations only Dr. J. Mcdonald, Texas Technology College, Department of Civil Engineering D. Smith, Texas Technology College, Student
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A R. Herdt, CI(ef Date
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ojects Section Reactor Construction and Engineering fupport Branch Inspection Summary Inspection on April _19-20, 1978 (Report Nos. 50-416/78-7 and 50-4_17/ 78-7),
Areas Inspected:
Announced inspection of wind damage inflicted by April 17, 1978, tornado.
Accompanied NRC:NRR and SD and National (
Disaster Team personnel to site.
This incpection involved 10 inspector-
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hours on site and 5 inspector-hours at other facilitics by one FRC inspector.
Results: No items of noncompliance or deviations were identified.
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RII Rpt. Nos. 50-416/78-7 I-1 and 50-417/78-7
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b O 78 DETAILS I Prepared by:
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C. R. McFarland, Principal Inspector Date Projects Section Reactor Construction and Engineering Support Branch Dates of Inspecti n: April 19-20, 1978
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A R. Herd,, Chief Date rojects Section Reactor Construction and Engineering Support Branch
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1.
Pe_rsons Contacted a.
Mississi_ppi Power and Light Company (MP6L)
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C. K. McCoy, Plant Superintendent T. R. Reaves, Jr., Manager of Quality Assurance (QA)
P. W. Sly, QA Field Supervisor L. F. Dale, Assistant Proj ect Manager H. Carver, Manager of Information and Publication b.
Other Organizations G. Sliter, Project Manager, Electrical Power Research Institute T. L. Lee, Lead Superintendent, Night Shift, Bechtel Power Corporation 2.
Licensee Action on Previous Inspection Findings This ite;r was not within the scope of this inspection.
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3.
Unresolved Items No new unresolved items were identified.
4.
Unusual Occurrence - Inspector Dispatched to Site a.
High Wind Damage (
At about 11:10 p.m. on April 17, 1978, high winds, later classified as a tornado, caused extensive damage to the Unit 1 facility and to a large portion of the Grand Gulf Nuclear site. Unit 1 is 50% complete; Unit 2 is 10% complete.
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RII Rpt. Nos. 50-416/78-7 I-2 and 50-417/78-7 The Unit 1 containment liner was dented severly by a portion of a Manitowoc 4600 crane.
The Unit 1 south tower crane fell and bent around the Auxiliary Building and across the contain-ment liner. The Unit 1 north tower crane was damaged by the south tower crane. The tower crane used to erect the Unit 1 cooling tower all and caused a large hole in the concrete, natural draft, cooling tower.
The tornado winds caused extensive damage to administrative and warehouse buildings, and to temporary construction shacks and storage buildings.
The concrete batch plant sustained severe damage with the computer trailer, the Pittsburg Testing Laboratory trailer, the chiller trailer, and the maintenance shack being destroyed; moreover, the curing room was severely damaged.
The 500 KV
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switchyard and the upper (east) laydown area were severely damaged. Seven workers were injured, none seriously.
No I
deaths occured, b.
Field Observations (
The inspector met with personnel from the Office of Nuclear Reactor Regulation (NRR), Office of Standards Development (SD), and the National Dicaster 'leam for Severe Weather Phenomenon (NDT/SWP), and discussed the incident with National Weather Service personnel in Jackson, Mississippi on April 18 and 19, 1978. The NRC and the NDT/SWP personnel subsequently parLicipated in field observations at and near the Grand Culf site on April 19 and 20,1978, with the cooperation of the MP6L personnel.
Dr. T. Fujita of the University of Chicago, Department of Geoscience, a member of the NDT/SWP, made aerial observations of the site, the wind damaged areas near the site, and darage along the tornado path.
Dr. J. M. Donald and Mr. D. Smith, members of the NDT/SWP team, observed the wind damage on, and near, the site by touring the site with MP6L personnel and the NRC inspector, and by interviewing site personnel.
Dr. Fujita rated the tornado damage to be about two on a scale of zero to five that is used for comparison purposes by the NDT/SWP team.
The NDT/SWP team also made observations of other tornadoes in Mississippi during the same week. The primary interest in the NDT/SWP was to observe damage phenomenon in general and as related to the nuclear station as a group of typical modern structures.
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RIi Rpt. Mos. 50-416/78-7 I-3 i
and 50-417/78-7
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5.
Manatenent Interview A management interview was conducted on April 20, 1978, with Mr. T. R. Reaves, Jr., MP&L Manager of Quality Assurance.
The scope of the inspection and the field observations were reviewed.
No items of noncompliance were identified during this inspection.
In subsequent discussions, the licensee agreed to submit a report of the storm damage together with necessary corrective actions.
This is identified as Item Nos. 416 and 417/78-07-01; Storm Damage, i
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