IR 05000518/1979011
| ML19291B024 | |
| Person / Time | |
|---|---|
| Site: | Hartsville  |
| Issue date: | 06/28/1979 |
| From: | Cantrell F, Swan W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19291B017 | List: |
| References | |
| 50-518-79-11, 50-519-79-11, 50-520-79-11, 50-521-79-11, NUDOCS 7908290208 | |
| Download: ML19291B024 (6) | |
Text
UNITED STATES
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Report Nos. 50-518/79-11, 50-519/79-11, 50-520/79-11 and 50-521/79-11 Licensee: Tennessee Valley Authority 500A Chestnut Street Chattanooga, Tennessee 37401 Facility Name: Hartsville Nuclear Plant, Units A1, A2, B1 and B2 Docket Nos. 50-518, 50-519, 50-520 and 50-521 License Nos. CPPR-150, CPPR-151, CPPR-152 and CPPR-153 Inspection at Hartsville sit near Hartsville, Tennessee Inspector:
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Date Signed vf_.
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W. B. Swan Approved by:
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F. S. Cantrell, Act'iag 'Section Chief, RCES Branch Date Signed SUMMARY Inspection on May 24-26, 29-30 and June 1-2, 1979 Areas Inspected This routine unannounced inspection involved 59 inspector hours onsite in the areas of concrete, spray ponds, containments and project status.
Results Of tim areas inspected, no apparent items of noncompliance or deviations were identified.
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DETAILS 1.
Persons Contacted License Employees
- R. T. Hathcote, Project Manager H. S. Sheppard, Assistant Construction Engineer, Plant B G. A. Gonsalves, QA Supervisor J. W. Davenport, Civil / Materials QC Supervisor, Plant A W. W. Davis, Materials Engineer, Plant A M. B. Rodgers, Materials Engineer, Plant B A. G. Debbage, QA Audit Supervisor W. T. Quinn, Const ruction Engineer, Plant B W. R. Brown, Cons'.ruction Engineer, Plant A L. H. Jackson, Assistant Construction Engineer, Plant A B. E. Huffaker, Civil / Materials QC Supervisor, Plant B G. England, DCU Supervisor, Plant A R. C. Nixon, Document Control Supervisor, Plant B J. T. Dorman, Assistant Construction Engineer, Second Shift R. L. Long, Materials Engineer, Plant A
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on May 30, 1979 with those persons indicated in Paragraph 1 above for the inspection effort to that date.
A telephone report was made to Mr. R. T. Hathcote on Monday, June 4, 1979, of the inspector's observations of concrete placment in basemate of Unit A-2 on June 1-2.
3.
Licensee Action on Previous Inspection Findings Not inspected.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Independent Inspection Effort Planned Curtailment of Construction Activities of Plant B a.
On May 23, 1978, an announcement was published that construction of Plant B at Hartsville would be stopped and resumed after a four year delay.
During the inspection, internal TVA meetings were held and conferences were held with state and local govenrment officials con-cerning the impact of the curtailment on the five contiguous counties.
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-2-Reassignment of management, engineering, quality control and contruction is being evaluated by TVA.
The protection of partially completed facilities of Plant B during the
" moth ball" period and utilization of facilities common to A&B require determination of what additional work needs to be accomplished. A list of recommended actions was prepared. An item such as completion of the basemat for B-2 could take as long as four months. Prote ion of stored equipment will be a concern of TVA and NRC.
b.
Status of Project The inspector toured the site, observing the status of overall completion and operations in progress.
Observations included welding of vent wall in A-1 containment to its base ring; MT examination of a joint weld on the base plate ring for the vent wall in A-2; and welding the first ring of the containment wall to the base transition ring in B-1.
Crane handling of a complete shop fabricated wall section of liner for the A-1 fuel pool was watched.
Discussions were held with the site QA unit on summaries prepared of c.
audits and processing of IEB's, IEC's and reportable items.
No items of noncompliances or deviations were identified.
6.
Containment (Structural Concrete 1) - Observation of Work and Work Activities for Basemat of Unit A-2 Preparation for, and the placement of pours A2R-1B &lC were observed by the inspector.
The preparations observed included inspection of tested cadweld specimens and the installation of 120 cadwelds.
QC Control of acceptance of the cadwelds was through procedure HNP S0P 4, Rev. 2 "Cadwell Splice Installation" and QCI C-401 " Concrete Cadweld Inspec-tion".
Control of the concrete manufacturing and placement was through Civil QCI's C-201, C-204, and C-208. Acceptance criteria for Category I concrete are set out in the PSAR and were incorporated in CF Braun and Co. Specification 300-01 " Concrete - TVA STRIDE".
Placement was accomplished in a continuous operation utilizing five pump lines and four cranes manned by nine crews working 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> shifts. Approxi-mately 5,700 cubic yards of concrete were placed in 39 hours4.513889e-4 days <br />0.0108 hours <br />6.448413e-5 weeks <br />1.48395e-5 months <br />.
Continuous monitoring at each placement point was provided by QC personnel.
During the placement period, the inspector observed sampling of pumped concrete at the end of pumplines, mixing and transport of concrete and tensile testing of three cadwelds (two sister splices and one production splice).
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_3 After the placement was completed the inspector observed curing operations and green cutting of the top surface in preparation for joining with the final thin placement up to sor liner plate level.
No items of noncompliances or deviations were identified.
7.
Lakes, Dams, and Canals - Observations of Erk and Work Activities For Spray Ponds A-1, B-1, A-2, and B-2 The inspector observed continuing excavation of earth and Hermitage rock down to bedrock Carters limestone in the south portion of the basin for spray pond B-2.
Prehistoric erosion gullies in the exposed limestone were being filled with crushed rock and fill concrete to seal the stone from water erosion in compliance with subparagraph 4.3.1.1 of specification W6C-875, procedure HNP-SOP-2 " Foundation Evaluation and Treatment" and TVA geologic soils engineer team memorandum dated April 2, 1979, Russel to Hathcote.
The inspector examined the concrete bases and concrete intake skimme*s for the four spray pond pumphouses (SPPIO. Except for A-1 SPPH the foundations, were up to floor grade. Concrete quality for these pump houses and auxiliaries is being controlled by the Stride specification and QC procedures for other Category I concrete for the Hartsville Project.
No items of noncompliances or deviations were identified.
The inspector was told that despite the shutdown of Plant B construction, all four emergency service water spray ponds and their pumphouses and piping will be completed.
Placement and compaction of earth fill for the ponds is expected to resume in early July,1979. The extensive retesting and evaluation of previously placed fill under NCR HNP-B11 and NCR HNP-B12 has been completed and the results were published June 1, 1979 It was concluded that no corrective action is required, except for the removal of the top surface which may have been damaged by storm water while fill operations were suspended.
To avoid repetition of conditions leading to NCR's B11 and B12, the CONST QCI Manual is being revised where not previously indicated to include the type of test to be conducted, frequency of inspection and acceptance criteria as required by the Hartsville Construction Specification N6C-875, " Earth and Rock Foundation and Fills." The CONST QA staff will continue to update the QCI Manual as necessary to reflect construction specification revisions.
Site QC inspectors will then be retrained to the revised QCI's to establish their cognizance of applicable requirments including proper recording of test data.
In order to prevent mathematical errors in test results on earth fill from going undetected for a lw time such that major corrective actions are necessary, the site QC unit will review test documentation in a timely manner to enable errors to be caught before extensive additional work is accomplished 2013 264
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-4-and a " checked by" block was added to compaction test forms to record this review.
No %s of noncompliance or deviations were identified.
8.
Containment (Structural Concrete II) Observation of Work and Work Activities for Shield Wall Units A-1 and B-1 For Unit A-1, completed shield wall placement AIR-2C, the third wall ring was visually inspected.
This placement, totalling 474 cubic yards of concrete and grout, was made on May 11, 1979 under the controls of QCI C-201, revision 4.
The inspector also observed installation of curved horizontal rebr.rs for the next A-1 vall placement.
The second wall placement on Unit B-I was made May 7,1979, under pour BIR-2B, and required 484 cubic yards of concrete mix and grout. The completed concrete was visually inspected. (The inspector had observed the preparations for this placement during previous inspections.,
To supplement the visual inspection the pour authorization checks, curing records and initial compressive test results were reviewed for both placements.
Visual inspection and review of quality records (detailed in paragraph 9)
gave evidence that adequate quality control had been imposed during prepara-tion for placement, manuf acture, pouring and curing.
No items of noncompliances or deviations were identified.
9.
Containment (Structural Concrete II) - Review of Quality Records For Shield Walls of Units A-1 and B-1 The pour cards and other quality records required by the specifications and by procedures C-201, C-204, C-208 and referenced ASTM ACI Standards were reviewed. The records covered preparation for placement, mixing, deliv-ry, placement, curing, materials testing, batch plants A and B operatioas, qualification of inspection and test personnel, and auditing of tesi.ing, The three day compressive test results for both pours AIR-2C and BIR-2b were within specification limit. The 28 day and 90 day test results will be reviewed along with inspector follow up item 50-518/79-09 01 for previous placement for the first lif t of pour AIR-2B. The designated mix requires the attainment of 4,000 psi compressive strength in 90 days.
No items of noncompliances or deviations were identified.
10.
Containment (Steel Structures and Supports) - Review of Quality Assurance Implementing Procedures For Unit A-1 The inspector continued review of QA implementing procedures for erection of the steel containment and the reactor pressure vessel pedestal. Work package D009-MI thru Addendum 2, "Preassemble Second Ring Wall Liner for Steel Containment" and Work package D014-M1, thru Addendum 5 " Install First 2013 265
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-5-Ring of Containment Vessel Liner" were reviewed. The procedures detail responsibilities, reference documents, construction steps and hold points for inspection in a manner that appears to be adequate to assure quality control. Welding is covered by the work packages but will be inspecced in more detail during future inspections.
No items of noncompliances or deviations were identified.
11. Containment (Steel Structures and Supports) - Observation Of Work and Work Activities For Units A-1 and B-1 In Unit A-1, a follow up inspection was made of installation craations on the first two rings of the containment wall steel.
Backgouging for a repair of a vertical weld of the nearly complete third ring on the assembly template was observed.
In Unit B-1 containment, the two sections of the second containment liner ring which were placed in April had been removed and placed back in storage due to curtailment of construction of Plant B. Welding of the first ring to the transition anchor plate was continuing.
In Unit B-1, the lower section of the RPV pedestal was in place and much of the tie down and section assembly welding had been completed. No work was underway on the pedestal and no decision was announced on completion of the pedestal installation before plant B work is stopped.
On May 26, the inspector was notified by the licensees' supervisor of Plant A quality control that cracking along a horizontal inside buttered weld preparation on the A 1 RPV pedestal had been found and delineated by dye penetrant. The vendor had already been notified and on May 29, 1979, the inspector observed a team inspecting the questioned area. The team consisted of a representation of Lakeside Bridge and Steel Company, the CF Braun site representative and seven TVA men.
In addition the TVA welding supervisor was present. This problem will be followed and reported on by NRC metallur-gists starting with report 50-518/79-12. This inspector followed operations other than welding.
No items of noncompliances or deviations were identified.
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