IR 05000498/1979020
| ML19262C098 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 12/11/1979 |
| From: | Crossman W, Gilbert L, Randy Hall NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML19262C095 | List: |
| References | |
| 50-498-79-20, 50-499-79-20, NUDOCS 8001280291 | |
| Download: ML19262C098 (8) | |
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U. S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION IV
Report No.
50-498/79-20; 50-499/79-20 Docket No. 50-498; 50-499 Category A2 Licensee: Houston Lighting and Power Company Post Office Box 1700 Houston, Texas 77001 Facility Name:
South Texas Project, Units 1 & 2 Inspection at: South Texas Project, Matagorda County, Texas Inspection conducted: November 13-16, 1979 Inspectors:
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pl. D. Gilbert, Reactor' Inspector, Engineering Support Da'te Section (Paragraphs 1, 2, 3, 4, 5, 6 and 10)
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. E. Martin, Reactor Inspector, Engineering Support Da t.e '
Section (Paragraph 7)
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,p. G. Mcdonald, Reactor Inspector, Engineering Support Da'te v
Section (Paragraph 7) (November 13,14 and 16,1979, only)
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,pi, Rea[por Inspector, Engineering Support Datel J. I.
Sec i an (ParagYaphs 8 and 9)
Reviewed:
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H. S. Phillips, Resident Reactor Inspector Date Projects Section
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Approved:
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W. A. Crossman, Chief, Projects Section Date M
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R. E.' Hall, Chief, Engineering Support Section D4te Inspect;on Summary:
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Inspection on November 13-16, 1979 (Report No. 50-498/79-20; 50-499/79-20 Areas Inspected: Routine, unannounced inspection of construction activities including site tour; observation of storage and control of filler material for welding safety-related piping for Unit 1; review of records related to fabrication of reactor coolant system supports for Unit 2; observation of work related to welding of the containment liner dome for Unit 2; review of procedures and records and observation of work related to electrical components and systems; observation of work and review of records related to earthwork and concrete; and follow up on a previously identified inspection finding. The inspection involved eighty-four inspector-hours by four NRC inspectors.
Results: Of the seven areas inspected, one apparent deviation was identi-fied in one area (failure to conform to ACI 304-73, paragraph 8).
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DETAILS 1.
Persons Contacted Principal Licensee Employees
- L. D. Wilson, Site QA Supervisor
- M. H. Smith, Plant QA Supervisor
- L. K. English, Site Manager
- T. D. Stanley, QA Supervisor
- J. W. Estella, QA Technician
- C. L. Grosso, Associate QA Engineer - Civil B. R. Schulte, Junior QA Engineer - Civil Other Personnel
- G. T. Warnick, Site QA Manager, Brown & Root (B&R)
- R. R. Gunter, Assistant Site QA Manager, B&R
- U. D. Douglas, Project Manager, B&R
- C. M. Salvitti, Assistant Construction Project Manager, B&R C. Chaplin, Site QA Manager, Pittsburg Des Moines J. R. Gebhardt, Assistant Resident Engineer - ECP, B&R The IE inspectors also interviewed other licensee and contractor employees during the course of the inspection.
- Denotes those attending the exit interview.
2.
Licensee Action on Previous Inspection Findings (Closed) Infraction (50-498/79-08; 50-499/79-08): Failure to Have a Procedure for Monitoring Welding Operations. The IE inspector reviewed HL&P's corrective actions. These actions included issuance and imple-mentation of weld monitoring procedures by Pittsburg Des Moines Steel Company for welding on the Reactor Coolant system support and contain-ment liner contracts. This matter is considered closed.
3.
Site Tour The IE inspectors toured the Unit 1 Containment and Auxiliary Buildings to observe construction activities in progress and to inspect house-keeping.
No items of noncompliance or deviations were identified.
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4.
Safety Related Piping - Unit 1 The IE inspector selected two Material Distribution Stations, MDS-3 and MDS-5, to inspect for compliance with the B&R procedure for control of welding materials, MECP-8, Revision 3.
In the areas inspected, including surveillance by B&R QC personnel, no discrepancies were noted.
No items of noncompliance or deviations were identified.
5.
Reactor Coolant System Supports - Unit 2 The IE inspector reviewed PDM weld records, postweld heat treatment records and inspection records for six welds (welds No. 7, 8 and 9 on both columns AA4 and AA5 of Drawing 1AB, Revision 0) for compliance with requirements of Contract 19744 and ASME III, Division 1, Subsection NF.
No items of noncompliance or deviations were identified.
6.
Containment Liner Dome - Unit 2 The IE inspector observed the welding of Seam A of Section S-3-8 identified on PDM Drawing E79B for the Containment Liner Dome.
Welding was being performed using E7018 electrode in accordance with WPS 67-61, Revision I.
The welder was qualified to Section IX of the ASME B&PV Code.
No items of noncompliance or deviations were identified.
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Electrical Component Systems a.
Review of Procedures
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The IE inspectors reviewed the following Brown & Root procedures to determine if appropriate and adequate measures have been estab-lished to provide the necessary controls for receiving, handling, storage and maintenance of Class IE electrical components and equipment:
GCP-22, Revision 13, " General Receiving" GCP-35, Revision 1, " Storage and Maintenance" No discrepancies with th'e requirements of 10 CFR 50, Appendix L and ANSI N45.2 were noted b.
Observation of Storage Facilities A level A warehouse, a level B warehouse and the cable storage yard were inspected to observe adherence to the procedures identified in "a" above. The following Class IE components or 1816.138
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equipment were examined and their maintenance, hold or other status identification was noted for a subsequent record review:
(1)
Level A Warehouse Auxiliary Feedwater Pump Motor M-0681A Auxiliary Feedwater Pump Motor M-1571 (Hold Tag February 28, 1979)
Circuit Breaker EC-1029 & 1029A Component Cooling Water Pump Motor M-1476-A RHR Pump Motor M-0338A (Hold SNG-2621)
Asco Solenoid Valves Hold SNG-3024 IJISI Pump Motor M-0280 IDISI Pump Motor M-0281 (Hold SG-2622) -
(2) Level B Warehouse 4 Class IE 125VDC Batteries PPM-1840 S-G62600 (3) Cable Storage Yard Safety-Related Cable NCR #S-G3420
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S-G3421 S-G3422 S-G3424 S-G3425 c.
Review of Records The IE inspectors reviewed the following maintenance records, exami-nation checks and nonconformance reports:
(1) Maintenance Records These records identify the recommended maintenance for electrical equipment being stored prior to installation and use, the time interval the maintenance is to be performed and the initials and date of the actual maintenance that has been performed.
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M-0681A M-1571 M-1476A M-0338A M-0280 M-0281 PPM-1840 (2) Examination Checks These records identify the recommended receiving checks to assure that the electrical equipment was not damaged during shipment, is functional and the initials and date of actual examination. This item required no additional maintenance prior to installation.
EC-1029 EC-1029A (3) Nonconformance Reports (NCR)
These records identify discrepancies or damage to the electrical equipment, cause of the concern and corrective actions necessary to assure that the equipment meets its specifications prior to installation or use.
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Hold Tag February 28, 1979 SNG-2621 SNG-3024 SG-2622 SG-62600 SG-3420 SG-3421 SG-3422 SG-3424 SG-3425*
SG-62609*
SG-2613A*
SG-2634*
- Except for these items, all of the above electrical equipment or components were inspected during the inspection of storage
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facilities and are identified in "b" above.
The review of records did not identify any area in which the QA procedures were not being adequately implemented; the required maintenance has been established and is being performed; and the items of nonconformance are identified, reviewed by knowledgeable personnel and corrective measures established.
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No discrepancies with the requirements of 10 CFR 50, Appendix B, ANSI N45.2 and the FSAR were identified.
No items of noncompliance or deviations were identified.
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Concrete Construction The IE inspector observed the following concrete placements in the Mechanical-Electrical Auxiliary (MEA) buildings:
MEl-WO43-08a, Interior Wall, MEA Bldg., Unit 1 a.
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MEl-S204, Floor Slab, FEA Bldg., Unit. I c.
ME2-W210-10, Interior Wall, MEA Bldg., Unit 2 The IE inspector observed that during placement MEl-WO43-08A, the concrete was being placed from a plywood chute without the use of a tremie into a 12 inch wide by 8 feet high wall. The concrete was striking against a horizontal reinforcing steel bar which appeared to be causing the coarse aggregate to separate from the concrete. ACI 304-73, " Recommended Practice for Measuring, Mixing, Transporting, and Placing Concrete,"
paragraph 6.2, " Aggregate and Mortar Separation," statta that, "...
Equipment should be arranged so that the concrete has an unrestricted vertical drop into the center of the placement or container receiving it.
The stream of concrete should not be separated by permitting it to fall freely over rods, spacers, reinforcement, or other embedded materials."
B&R Specification 2A010CS028-G, " Concrete Construction," states that,
"The placing of concrete shall be in accordance with the recommendations of Chapter 6 of AC1 304 and as herein specified " The failure of the placement techniques used to assure an unrestri ':d vertical drop of the concrete into the form represents a deviation from the recommended practices of AC1-304-73 as invoked by the Concrete Construction Specifi-cation and by Section 3.8.4.2.2 of the STP FSAR.
The IE inspector also observed the preplacement inspections performed by B&R QC personnel of placements MEl-WO43-08 and FEl-S204.
No discrepancies were voted in these placement activities.
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Earthwork The IE inspector conducted an inspection of construction activities and QC documents relative to the Essential Cooling Pond (ECP). The following documents establish the quality requirements for the construc-tion of the ECP:
B&R Technical Reference Document No. 2Y570SQ008, "ECP Construction a.
Engineering and QC Functions"
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B&R Specification No. 2YS70YS039, Revision F, "ECP Construction" During the inspection of the ECP, the placement of concrete for the ECP slope slab at Station 20 + 97 was observed.
The following randomly selected QC records were reviewed for conformance to the quality requirements contained in the B&R Specifications:
Two Pittsburgh Testing Laboratory (PTL) reports entitled "Compres-a.
sive Strenth of Molded Soil-Cement Cylinders (ASTM C1633-63)."
The first report dated June 20, 1979, contained the results of ten field tests performed on the diversion dike berm slope, while the second report datec June 14, 1979, contained the results of four field tests of the embankment berm slope. The results of the compressive tests and of the determinations of cement content were found to be in conformance with the requirements of Table F-1,
" Soil-Cement Design Mix Acceptance Criteria," of B&R Technical Reference Document SY5705Q005-C, "ECP Earthwork Design and Construction."
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Two PTL reports entitled " Summary of In-Place Density Tests,"
dated October 13 and 14, 1979. The first report contains six and the second contains seven field test results of density tests performed at the bottom of the ECP (elevation +17.0).
All test results met the requirement of the B&R Specification for "ECP Construction" for a minimum dry density of 90 pounds per cubic foot.
No items of noncompliance or deviations were identified.
10.
Exit Interview The IE inspectors met with licensee representatives (denoted in para-graph 1) at the conclusion of the inspection on November 16, 1979.
The IE inspectors summarized the purpose, scope and findings of the inspection. The licensee representatives acknowledged the statements by the inspector with regard to the deviation.
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