IR 05000566/1980011
| ML19338E208 | |
| Person / Time | |
|---|---|
| Site: | Yellow Creek  |
| Issue date: | 08/04/1980 |
| From: | Cantrell F, Matt Thomas NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19338E206 | List: |
| References | |
| 50-566-80-11, 50-567-80-11, NUDOCS 8009250114 | |
| Download: ML19338E208 (4) | |
Text
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o UNITED STATES
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",'n NUCLEAR REGULATORY COMMISSION
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aI REGION 11
' 8 101 MARIETTA ST., N.W.. sulTE 3100
g ATLANTA. GEORGI A 30303 s
AUG - 41980 r
Report Nos. 50-566/80-11 and 50-567/80-11
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Licensee: Tennessee Valley Authority 500A Chestnut Street Chattanooga, TN 37401 Facility Name: Yellow Creek Nuclear Plant Docket Nos. 50-566 and 50-567
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License Nos CPPR-172 and CPPR-173 Inspection at Yellow Creek site near luka, Mississippi 4997 M-k- / ^ b O Inspector:
M. Thomas Date Signed
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Approved by:
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F.' $. Cantrell, S'ec"ti nfliief, RCES Branch
' Dat'e Signed SUMMARY Inspection on July 15-17, 1980
Areas Inspected i
This routine unannounced inspection involved 25 inspector-hours onsite in the of 10 CFR 50-55(e) items, construction status, storage of safety-related areas
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piping, and safety-related concrete activites.
Results
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Of the 4 areas inspected, no items of noncompliance or deviation were identified in 3 areas; 1 item of noncompliance was found in 1 area (Failure to Follow Procedure for Coring of Concrete Test Cylinders paragraph 5).
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DETAILS 1.
Persons Contacted Licensee Employees
- M. M. Price, Project Manager
^L. S. Cox, Construction Engineer
- C G. Wages, Assistant Construction Engineer (QC)
- C. E. Hale, Assistant Construction Engineer, Engineering Services
- R.
G. Delay, Supervisor, QC Materials & Civil Unit
- J. D. Shanlever, Material Services Unit
- S. Blount, Supervisor, Technical Services
- S. E. Alge, Supervisor, Document Control Unit (DCU)
S. P. Watson, DCU M. Harris, Civil QC Unit
- J. N. Holladay, Supervisor, Project QA Unit Other licensee employees contacted included construction craftsmen, techni-clans, operators, and office personnel.
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on July 17, 1980 with those persons indicated in Paragraph 1 above. Infraction 566/80-11-03 and 567/80-11-02, Failure to follow procedure for curing of concrete test cylinders; and unresolved item 566/80-11-04 and 567/80-11-03, Evaluation of concrete test cylinders that break below design strength requirements, were discussed.
3.
Licensee Action on Previous Inspection Findings Not inspected.
4.
Unresolved items are matters about which more information is required to determine whether they are acceptable or may in:rolve noncompliance or deviations.
New unresolved items identified during this inspection are discussed in paragraph 5.
5.
Independent Inspection Effort The inspector conducted an inspection of Unit I reactor building, waste I
management building, fuel handling building, control building, Unit i ERCW spray pond, warehouse and storage yard areas, and the concrete lab. Areas inspected included:
(a) Construction activities and status (b) Calibration of laboratory and test equipment i
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(c) Concrete lab curing room and test cylinder records (d) Soil samples and tests for Unit 1 ERCW spray pond (e) Level B warehouse storage and safety-related stainless steel pipe storage The inspector conducted an inspection of the concrete lab. The inspector reviewed the calibration records for laboratory and test equipment. Cali-bration of all equipment being used is current. Equipment for which the re-calibration due date had passed was clearly identified and segregated for nonuse.
WLile inspecting the moist curing room, the inspector observed a number of ci linders which were partially dry.
Included were the following test c3 linders for safety-related concrete placements:
Cylinder No.
Concrete Pour No.
2021, 23, 24 F1-E5 2022 Al-T1, T6, S1 2157 Al-522 2158 W-E3, E4, E9, E10 2173 A2-E65, F43 ASTM C31 as implemented by Yellow Creek quality control instruction (QCI)
C-208 requires that the test cylinders have moisture on the entire surface area at all times. This item of noncompliance will be identified as infrac-tion 566/80-11-03 and 567/80-11-02, Failure to Follow Procedure for Curing of Concrete Test Cylinders. This noncompliance was discussed with respon-sible site personnel and immediate actions were taken to correct the problem.
The cylinders were watered down in order to cover the dry areas. In addition to maintaining the relative humidity in the curing room within specifications, wet burlap was placed over the cylinders in order to help retain moisture on the cylinders. Civil QC personnel were instructed to inspect the curing room more frequently and check the cylinders for dryness. With corrective actions having been taken prior to the inspector leaving the site, no i
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written response is required. This item will be opened and closed in this j
inspection report.
The inspector reviewed the records for concrete test cylinder breaks.
While reviewing the records, the inspector found that cylinders 2217A & B,
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2219B, and 2223B for concrete pour W-D2 & D3, plus several other cylinders for various pours, broke lower than the design strength requirements for that class of concrete on the 28-day breaks. After further review the i
inspector found that no type of nonconformance (QCIR or NCR) was written or j
any evaluation made for pour W-D2 & D3, nor is there a requirement in the Yellow Creek procedures to do so. Following discussions with site personnel, the inspector found that the acceptance criteria and guidance currently'
followed by the site is given in G-2, General Construction Specification for Plain and Reinforced Concrete.
Interpretation and application of G-2 by site personnel does not require evaluation of specific pours, regardless of the number of cylinders which break below strength requirements for that (
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pour.
This will be identified as unresolved item 566/80-11-04 and 567/80-11-03, Evaluation of Concrete Test Cylinders that Break Below Design Strength Requirements.
The inspector conducted an inspection of Level B warehouse storage ande level D storage yard for safety-related stainless steel pipe.
Areas in-
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spected included proper assignment of storage levels and identification of stored material.
Safety-related pumps and motors stored in the warehouse were on cribbing, with protective coverings to keep out dirt and debris.
All the motors had heat sources applied. Stainless steel pipe was stored cribbing off the ground and had proper identification.
The inspector on
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observed several end caps which had popped off due to the heat. This was brought to the licensee's attention and was corrected immediately.
6.
Containment (Structural Concrete II) - Observation of Work and Work Act ivities, Unit 1 The inspector observed partial placement of concrete pours numNrs F1-D3, I
C6 and W-Flo, F12. Acceptance criteria examined by the insperior appeared in the following documents:
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Section 3.8 of the PSAR 2)
TVA Specification G-2, " Plain and Reinforced Concrete" 3)
Quality Control Instructions (QCI) C-201, C-202, C-204, C-20E, and C-209 4)
Specification N8C - 887 5)
Construction Engineering Procedure (CEP) 15.01 Forms were tight and clean and rebar was properly cleaned.
Preplacement inspections were indicated by the signed pour cards. Placement activities pertaining to free fall, flow distance, delivery time, and consclidation conformed to specifications.
Activities were continuously monitored by civil QC personnel. Test for slump, air content, temperature, unit weight, and samples for concrete cylinders met frequency and acceptance criteria.
The inspector observed batch plant activities and verified that measures taken for concrete temperature control due to hot weather conditions were acceptable, and proper mixes specified were being delivered to the location designated.
No items of noncompliance or deviations were identified.
7.
Licensee Identified Items (50.55(e))
(0 pen) Item 566 and 567/80-11-01, Structural Steel Framing for Control a.
Building Fillet Welds (NCR YC-069).
The subject structural steel framing welds failed to meet AWS fillet weld requirements per contract specification. The vendor is Bristol Steel (Mississippi Valley Steel).
Licensee stated that 10 CFR Part 21 is applicable to this deficiency.
b.
(Open) Item 566/80-11-02, Earthfill Placement and Inspection for Unit 1 ERCW Spray Pond (NCR YC-077) during a site QA audit (YC-C-80-07)
several activities related to earthfill placement for Unit 1 ERCW spray pond were not done in accordance with procedures.
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