IR 05000389/1979008

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IE Insp Rept 50-389/79-08 on 790530-0601.Noncompliance Noted:Failure to Properly Cure Concrete Test Cylinders
ML17207A338
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 06/19/1979
From: Conlon T, Harris J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML17207A334 List:
References
50-389-79-08, 50-389-79-8, NUDOCS 7909040066
Download: ML17207A338 (4)


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UNITED STATES NUCLEAR REGULATORY COMMISSION

REGION II

101 MARIETTAST., N.W., SUITE 3100 ATLANTA,GEORGIA 30303 Report No. 50-389/79-08 Licensee:

Florida Power and Light Company 9250 West Flagler Street Miami, Florida 33101 Facility Name: St. Lucie, Unit 2 Docket No. 50-389 Iicense No.

CPPR-144 h

Inspector:

J

. Har is, RC&ES Branch Approved by~

T. E. Conlon, Section Chief, RC&ES Branch Da Sig ed ate igned SUMMARY Inspection on May 30 - June 1,

1979 Areas Inspected This routine unannounced inspection involved 18 inspector-hours onsite in the areas of foundations; structural concrete and construction status.

Results Of the three areas inspected, no apparent items of noncompliance or deviations were identified in two areas; one apparent item of noncompliance was found in one area (Infraction - Failure to Properly Cure Concrete Test Cylinders - Details paragraph 5).

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DETAILS 1.

Persons Contacted Licensee Employees

  • B. J. Escue, Site Manager N. T. Weems, Assistant QA Manager
  • W. M. Hayward, QA Construction Supervisor L. T. Page, QA Engineer, Civil 0. J. Karch, QA Engineer, Civil
  • K. V. Overen, QA Record Custodian
  • E. V. Sherman, QA Engineer
  • C. Carlos, Civil QC Supervisor

+A. J. Walcott, Staff Area QC Supervisor

"Attended exit interview 2.

Exit Interview The inspection scope and findings were summarized on June 1,

1979 with those persons indicated in Paragraph 1 above.

3.

Licensee Action on Previous Inspection Findings C

Not inspected.

4.

Unresolved Items Unresolved items were not identifed during this inspection.

5.

Independent Inspection The inspector examined the following areas:

a.

Form preparation and reinforcing steel installation in the Reactor Control building, Auxiliarybuilding and Intake Structure.

b.

Soils and concrete laboratory.

c.

Partial placement of interior columns 182B, 183 and interior wall 183A in the Auxiliarybuilding.

Observation of curing controls on concrete test cylinders disclosed that field temperatures and laboratory moisture conditions were not being controlled in accordance with Procedure QCI 10.71 and Specification Flo-2998.473.

Procedure QI 10.71 and Specification F10-2998.473 specify that concrete test cylinders will be cured in accordance with ASTM C-31 and ASTM C-511.

ASTM C-31 requires that the temperature adjacent to field cured test cylinders

I

be maintained in the range of 60 to 80 degrees Fahrenheit.

ASTM C-511 requires that laboratory cured test cylinders be moist cured in a

room having a relative humidity of 95 percent.

Moist curing is defined in ASTM C-31 as meaning that the test specimens shall have free water maintained on the entire surfaces at all times.

On May 31, 1979, temperatures adjacent to field cured test cylinder set numbers 6147 and 6149 were 90 degrees and 86 degrees Fahrenheit respectively In the laboratory curing room free water was not visable on test specimens stored along the right wall and documen-tation was not available to support the 95 percent relative humidity require-ment.

The above examples of failure to control curing of concrete test cylinders is identified as Infraction 389/79-08-01.

Foundations - Observations of Work and Mork Activities, Unit 2 The inspector observed excavation, compaction and partial placement of the mudmat for the fuel handling building and component cooling ducts.

Acceptance criteria examined by the inspector appear in the following documents.

a.

PSAR, Sections 2.5 and Appendix 2B b.

Procedure CSP-25, Excavation and Backfill c.

QI 10.10, Soils Tksting Surveillance of Excavations, Backfilling and Compaction Operations d.

Specification FL0-2998.471, Excavation and Backfill Observations indicated that excavations, compaction and placement of the mudmat were in accordance with acceptance criteria.

Discussions with responsible engineers and examination of qualifications of personnel indicated that a sufficient number of adequately qualified QA and QC personnel are at the construction site and adequately performing their assigned duties.

Foundations - Review of Quality Records The inspector examined quality records on foundation preparation for the fuel handling building, and component cooling ducts and qualifications of QC inspection personnel.

Acceptance criteria examined by the inspector are the same as those listed in paragraph 6.

Records examined included:

a.

b.

C.

d.

Foundation - backfill compaction release records Field density test reports Proctor test reports Qualification records of 17 concrete and soils inspectors No deviations or items of noncompliance were disclosed within the areas examined.