IR 05000320/1975006
| ML19220B147 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/28/1975 |
| From: | Folsom S, Heishman R, Narrow L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML19220B142 | List: |
| References | |
| 50-320-75-06, 50-320-75-6, NUDOCS 7904250480 | |
| Download: ML19220B147 (6) | |
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IE:I For= 12 (Jan 75) (Rev)
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U.S.11UCLEAR RECULATORY CC".MISSIC:s OFFICE OF I!;SPECTICN N;D C; FORCE"E';T
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. REGION I 50-320/75-06 Docket ;;o:
50-320 IE Inspection Frport !;o:
Metropolitan Edison Cc=pany License 1;o: CPPR-66 Licensee:
?i/A Eox 542 Priorio..
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A Reading, Pennsylvania 19603 Category:
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Middictown, Dauphin County, Pa. (Three Mile Island Saf eguards Location:
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Type of Licensee:
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Routine - Announced Type of Inspection:
P~ 7 12-13' 1975 Dates of Inspection:
April 17, 18, 23, 1975
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Dates of Previous Inspection:
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ddITU S.T I[Ab/7.F Reporting Inspector:
- e Seth.A. Folsom, Reactor Inspecter Date (E/[W f[ab/7F o
Acco=panying Inspectors:
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L. Narrow, Reactor Inspector Date
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Other Accc=panying Personnel:
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M Reviewed By:
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a R. F. Heish=an, Senior Reactor Inspector (
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SUM".ARY OF FINDISCS Enforcement Action A.
Iters of Sonceroliance None E.
Deviations None
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Licensee Action on Previousiv Identified Enforcecent "atters A.
The following previously identified (IE Inspection Report No. 50-320/74-07)
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item of noncompliance was resolved during the inspection.
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1.
Battery cells in contact with uninsulated battery racks.
Design Changes None identified Unusual Occurrences None identified Other Sienificant Findings A.
Current Findings
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1.
Unresolved Items a.
A total of eight vertical containeent tendons had been installed, tensioned and grouted.
Some separation of water from the grout mixture had caused incomplete grouting of the tops of the stres-sed tendons.
This item is unresolved.
(Details, Paragraph 3)
b.
The condition of the dike section between the. river water intake structures indicated that the ripap and the underlying filter layer may not conform to the design.
This item is unresolved.
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(Details, Paragraph 4)
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-2-Status of Previous Unresolved Ite=
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The following ite=, reported as unresolved in IE Inspection Report No. 50-320/74-09, was resolved during the inspection.
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Switchgear storage protection.
(Details, Paragraph 5)
Manacenent Interview A nanagenent interview was held at the site on May 13, 1975.
Persens Present General Public Utilities Service Corcoration R. F. Fenti. QA Auditor W. T.Cunn, Site Manager S. Levin, Site Project Engineer M. J. Stromberg, Site QA Auditor J. H. Wright, Resident Civil Engineer United Encineers and Constructors V. E. Cichocki, Coordinating Superintendent, QtjQC Burns & Roe G. T. Harper, Jr., Site Project Engineer Ite=s Discussed In each of the items discussed below, the licensee acknowledged the in-for=ation presented by the inspector.
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A.
Purpose of the insoection The inspector stated that the purpose of the inspection was to review previous unresolved iter.s, previous identified items of nonce =pliance, and to observe progress on the stressing and grouting of containment tendons.
B.
Review of Previous Unresolved Items
(Details, Paragraph 5)
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Review of Previous Itens of foncernliance (Details, Paragraph 2)
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Containnent Tendon Grouting The inspector stated that in his review of contain=ent tendon stres-sing and grouting, he had fcund that in sene instances water was sepa::ating frc: the grout at the top of the tendons, resulting in inco plete g:cuting of the tops cf the stressed tendons.
This condition was under investigation during this inspection.
This ite is unresolved.
(Details, Paragraph 3)
E.
Condition of the Dike Riprao and Filter Layer The inspector stated that during the inspection he had participated in a review of the condition of the dike, riprap and underlying filter layer, conducted by the follewing NRC, Division of Reactor Licensing (DRL) personnel:
T. L. Johnson H. Silver B. Washburn As a result of this DRL review, the licensee has been requested to provide evidence that the dike had been Lui] c and caintained in accordance with the drawings.
This item is unresolved.
(Detrils, Paragraph 4)
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Primary Systems Valve Dimensional Data The licensee agreed to notify the inspector upon completion of the documentation of the pri=ary syste=s valve dimensional data.
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I DETAILS 1.
Persons Contacted General Public Utilities Service Coraoration R. F. Fenti, QA Auditor L. Caribian, Structural Engineer (Parsippany)
W. T. Gunn, Site Manager C. L. Kopp, QA Auditor S. Levin, Site Project Engineer P. A. Levine, QA Auditor M. J. Stronberg, Site QA Auditor
R. J. Toole, Test Superintendent J. M. Vann, Safety & Licensing Engineer (Parsippany)
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J. H. Wright, Resident Civil Engineer I.. M. Zubey, Mechanical Engineer Metropolitan Edison Co=cany R. S. Brown, Safety & Licensing Engineer (Reading office)
United Engineers and Constructors V. E. Cichocki, Coordinating Superintendent, QA/QC F. F. Long, Assistant Field Supervisor, QC Burns & Roe C. T. Harper, Jr., Site Project Engineer
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Gilbert Associates J. Caves, Structural Engineer J. Chen, Structural Engineer Stressteel Cornany R. Bonono, Manager Field Operations H. Popworth, QA Engineer
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Schunack Associates
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M. Schupack, President (
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Batterv Cells in Contact with Uninsulated Battery Racks In a previous inspection it was f ound that station battery cells were in direct contact with uninsulated battery racks.
The licensee nas corrected this condition, per Deviation Report No. 0385, by providing plastic insulating strips in accordance with the insta.'.lation drawings.
The inspector exa=ined the battery racks and found that each glass battery case was electrically insulated frcm the battery racks.
This resolves the ite: identified in IE inspection Report No. 50-320/74-09, Details, Paragraph 2.
3.
Containment Tenden Grouting The inspector exacinad the progress cade in the six weeks since the start of the contain=ent stressing program.
A total of eight vertical tendons had been stressed and grooted.
Examination of the grouted tendons revealed that a void had developed at the top of each vertical tendon.
The voids are several inches in diaceter and approximately 12 inches deep. They are located at the centers of the tendons and apparently result from bleeding of water which then rises to the top of tendon.
The prestressing vendor, Stressteel Company, together with its consultants, were investigating the grouting operation during the inspection. This item is unresolved.
4.
Condition of the Dike Riprap and Filter Layer The inspector participated in a review of the condition of the dike riprap and filter layer by NRC Division of Reactor Licensing personnel. The DRL hydrologists had observed apparent erosion of the dike adjacent to the river water intake structures, and has requested the licensee to provide verification that the riprap and filter layer dimensions and materials conform to the design.
This item is unresolved.
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5.
Switcheear Storage Protection In a previous inspection it was found that installed switchgear was not being protected from cement dust, and environ = ental conditions were nec defined.
The licensee has revised the Electrical Control Procedure for Handling and Installing 4 KV and 480 V Switchgear, Motor Control Centers, DC Distribution Pancis and Bus Duet Procedure ECP 5-2 to specify environ-mantal storage require =ents.
The inspectoe examined selected switchgear
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cabinets and found that the equipment had been cleaned, provided with plastic coverings, and heaters were activated.
This resolves the item identified in IE Inspection Report No. 50-370/74-09, Details, Paragraph 13.
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