IR 05000566/1979012
| ML19250A327 | |
| Person / Time | |
|---|---|
| Site: | Yellow Creek  |
| Issue date: | 09/04/1979 |
| From: | Conlon T, Lenahan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19250A321 | List: |
| References | |
| 50-566-79-12, 50-567-79-12, NUDOCS 7910230056 | |
| Download: ML19250A327 (4) | |
Text
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UNITED STATES
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g NUCLEAR REGULATORY COMMISSION
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FiEGION ll
- y 101 MARIETTA ST., N.W., SUITE 3100
- g+9 * * * * *,&,c ATLANTA, GEORGIA 30303 Report Nos. 50-566/79-12, 50-567/79-12 Licensee: Tennessee Valley Authority 500A Chestnut Street Tower II Chattanooga, Tennessee 37401 Facility Name: Yellow Creek Nuclear Plant, Units 1 and 2 Docket Nos. 50-566, 50-567 License Nos. CPPR-172 and CPPR-173 Inspection at Yellow Creek Site near Iuka, Mississippi Inspector:
E,/ 5 S1 J. J.'Lehahan Date Signed Approved by: M
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9-Y-79 T. E. Conlon, Section Chief, RCES Branch Date Signed Date of Inspection: August 8-10, 1979 Areas Inspected:
This routine, unann.sunced inspection involved 20 inspector-hours onsite in the areas of foundatione and structural concrete work activities, level D storage, concrete and soils laboratory, and construction status.
Results:
Of the areas inspected, no apparent items of noncompliance or deviations were identified.
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DETAILS 1.
Persons Contacted
- C. Wages, Assistant Construction Engineer
- R. G. Delay, Supervisor, Civil QC Unit
- C. A. Burshears, Project Geologist
- J. N. Holladay, Supervisor, Project QA Unit
- S. Watson, Document Control Unit
- S. Carr, Assistant Contruction Engineer
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on August 10, 1979 with those persons indicated in Paragraph I above.
3.
Licensee Action on Previous Inspection Findings Not inspected.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Independent Inspection Effort The inspector examined the following areas:
a.
Construction status b.
Level D storage areas Concrete and soils laboratory and currentness of calibration of c.
laboratory equipment No deviations or items of noncompliance were identified.
6.
Foundations - Observations of Work and Work Activities (Units 1 & 2)
The inspector examined the following:
Partial placement of pour number Cl-B25 F, fill concrete in Unit I a.
control building, and pour number A2-B2-F, fill concrete in Unit 2 emergency sump.
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b.
Geologic mapping of the foundation of a portion of the Unit I control building c.
Construction and testing of granular fill testfill.
Granular fill is to be used as foundation material for emergency diesel generator buildings.
d.
Completed excavation for the Unit 2 powerhouse block.
Acceptance criteria examined by the inspector appear in the Sections 2.5 and 3.8.5 of the PSAR, Paragraph 2.5.3 of the SER, TVA specifications G-2 and N8C-882, and QCI C-110, C-201, C-208 and C-212.
No deviations or items of noncompliance were identified.
7.
Containment (Structural Concrete I) - Observation of Work and Work Activities (Unit I and 2)
The inspector examined the following:
Cadwelding of anchor rods for Unit 2 control building a.
b.
Curing of pour numbers Al-F55 and Al-66. valls in Unit 1 auxiliary building, and pour number Al-F1, the pedestal in Unit I reactor building Partial placement of pour numbers Al-F55 and Al-F47, F41, F50, F39, c.
walls in the Unit 1 auxiliary building.
Acceptance criteria examined by the inspector appear in Section 3.8 of the PSAR, TVA specification G-2 and QCI C-201, C-202, C-208, C-212, C-401 and C-402.
Cadweldii, activities were continuously monitored by certified QC inspectors.
Concrete placement activities were continuously monitored by QC inspectors. Forms were tight and clean. Rebar was properly installed and clean. Placement activites pertaining to delivery time, free fall, flow distance, layer thickness, consolidation,and in process testing of plastic concrete conformed to specification requirements Observation of activities at the batch plant disclosed that the batch 1 plant scales were not zeroing after each batch. Frequent checks by the batch plant operator verified that the scales were empty after each batch.
Discussions wi'h site QC personnel disclosed that failure of the batch plant scales to zero after each batch has been a recurring problem.
The monthly calibration of the scales was completed just prior to batching concrete for pour number Al-F55 and all scales were within the prescribed tolerance. The licensee indicated they will investigate the matter and take any necessary corrective action. The licensee's resolution of the problem will be reviewed by NRC in a subsequent inspection. This was 11"9 288
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identified to the licensee as Inspector - follow-up Item 566/79 8.2-01 and 567/79-12-01, " Batch Plant Scale Zeroing during Concrete Production." All category I concrete placed to date meets specification and design require-ments.
No deviations or items of noncompliance were identified.
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