IR 05000412/1978014
| ML19294A657 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 01/10/1979 |
| From: | Chaudhary S, Ebneter S, Varela A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML19294A656 | List: |
| References | |
| 50-412-78-14, NUDOCS 7903080103 | |
| Download: ML19294A657 (6) | |
Text
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT Region I Report No.
50-412/78-14 Docket No.
50-412 License No.
CPPR-105 Priority Category A
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_
Licensee:
Duquesne Light Company 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Facility Name:
Beaver Valley Station, Unit 2 Inspection at:
Shippingport, Pennsylvania Inspectioncondujtad-iber 11-14,1978 Inspectors:
)'
d hhW/ 8, /f 77 A.(A.'Varela, Reactor Inspector date signed h f. 0cwe UEr ll3 l7 9 S. K. Chaudhary, Reactf Inspector date signed date signed A'
A fe,/97f Approved by:
S. D. Ebneter, Chief, Engineering Support
// date sig'ned Section No. 2, RC&ES Branch Inspection Summary:
Insoection on December 11-14, 1978 (Report No. 50-412/78-14)
Areas Inspected:
Poutine, unannounced inspection by two regional based inspectors of construction activities in progress, rebar installation for containment interior slab at elevation 718'together with mock-up for study of concrete placement tech-nique, record review of two containment exterior wall concrete placements, review of significant deficiency item involving inadequate design of Lower Pump Cubicles, corrective action for :ame and review of previously identified unresolved _ items.
A site tour-inspection was also perfonned.
The inspection involved forty-eight inspector-hours onsite by two NRC region &! based inspectors.
Results: No items of noncompliance were identified.
Region I Form 12 7803086/o3 (Rev. April 77)
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DETAILS 1.
Persons Contacted Duquesne Light Company
- F. A. Arnold, Construction Specialist
- R. Coupland, Director, Site Quality Centrol H. N. Crooks, Quality Control Supervisor
- C. R. Davis, Senior Quality Assurance Engineer
- D. W. Denning, Senior Quality Control Structural Engineer L. Lohones, Senior Structural Services Laboratory Technician
- M. B. Prisuta, Consultant
- W. H. Sikorski, Quality Assurance Supervisor
- R. Was5abaugh, Manager, Quality Assurance Department
- A. Zelesnak, Engineer Stone and Webster (S&W)
- A. F. Champagne, Site Structural Engineer
- S. M. Dew, Site Project Engineer
- J. E. Williams, Resident Manager Dick Corporation (DC)
A. Cafardi, Quality Control Inspector J. Long, Quality Control Consultant J. Stanich, Construction Superintendent Beaver Valley Builders Sucoly T. Ordich, Quality Control Engineer In addition, the inspector interviewed other licensee and contractor personnel during the course of the inspection, including construction crafts.
- denotes those present at the exit intervie.
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2.
Construction Site Walk-Through Inspection A tour of the construction site was made to observe work activities in progress.
The inspector examined work items for any obvious de-fects or noncompliances, and for evidence of quality control of the work.
Particular items installed in incomplete construction were
'iscussed with quality and supervisory personnel as to their accept-ance.
Other items in process of installation were observed under control, such as activities associated with rebar installation for containment interior slab at elevation 718' including steam generator support embedments, and rebar for the adjacent primary shield wall.
The inspector observed that concrete placement of the 718' slab where reinforcing steel congestion exists, introduces concrete placement difficulties.
Placement and consolidated tochniques are being studied using a mock-up.
Additional tour inspection was made of repairs to the lower pump cubicle walls exterior of the containment.
These containment building activities were observed to be controlled.
No items of noncompliance were identified.
3.
Containment Building Record Review Exterior Concrete Wall Placement The inspector reviewed pertinent concrete placement work and quality related records associated with the structural concrete exterior wall of the containment building, lifts 10 and 11, above the basemat.
These placements made on November 8 and 22, 1978 were per-fonned by pumping.
The inspector determined that the QC records reflect work accomplished according to the following criteria:
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Beaver Valley Power Station, Unit 2 PSAR Quality Assurance Section 17 and Appendix B, and PSAR Section 15, Codes of Practice.
Beaver Valley Builders Supply (Concrete Materials and Batch
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Plant), Quality Assurance Program and Implementing Procedures.
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Specification 940, Mixing and Delivery of Concrete.
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Specification 904, Placing Concrete and Reinforcing Steel.
Specification 903, Concrete Testing Services.
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FCP-106, Concrete Placements in the Reactor Containment Exterior Wal.
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FCP-603, Cadwelding of Reinforcing Steel.
Beaver Valley Site QC Inspection Procedure IP-6.2.3.
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S&W Drawings RC 49A and B.
These records were reviewed a.
Placement Preparation Lift #10 Lift #11 Preplacement Inspection Report
- S-1643
- S-1689 Sign-off Pour Card
- 1676
- S-1685 Stud Weld Inspection Report
- S-0992 Cadweld Inspection Report
- 1406 b.
Delivery and Placement
Inspection Report
- S-1644
- S-1690
c.
Concrete Field Test Data
Sheet Report
372
380
d.
voncrete Post Placement and
Curing Inspection Report
- S-1645
- S-1691
e.
Batch Plant Records
Automatic Printouts / Truck
Tickets for
345 C.Y.
366 C.Y.
f.
Compression Strength Cylinders 4 sets over 4,000 psi
Required Strength
3,000 psi
g.
Qualifications of Inspection Personnel
Records and Qualifications for four QC inspectors were reviewed,
found acceptable, conforming to ANSI 45.2.6.
h.
Calibrations and Certification of Control Mixer, Trucks and
Routine Equipment Maintenance Records, observed in conformance
i.
QA Audit No. OLC-2-78-33 conducted on lift #10, containment
exterior wall during concrete placement and curing for seven
days.
j.
Deviation Reports - N&D #0829/ Lift #10 and N&Ds #0845 and 0850/
Lift #11 were adequately dispositioned and satisfactorily closed
out.
No items of noncompliance were identifie..
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4.
Licensee Action on Previous Inspection Findings
(Closed) Unresolved item (78-12-01): Inadequate design of lower
pump cubicles.
The inspector reviewed the original drawings SW
- RC-48A, B 2nd D for construction of the LPC, subject of significant
deficienc:
inadequate structural design) reported under 10 CFR 50.55e.
compared these with " Revised Plans Sections and Details,
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LPC-RC," Number 140A and B, issued for construction October 30,
1978. The inspector observed that remedial measures to reinforce
the LPC wall previously built up to elevation 697'-5" were provided
and the roof structure up to elevation 701'-5" has been redesigned _
to meet the PSAR criteria to withstand seismic loadings and probable
maximum flood without reliance on the sheet pile cofferdam.
The
inspector observed that,cpnstruction work had resumed and work is
proceeding under controlled conditions. The inspector considers the
redesign of the LPC's and the corrective action required for that
part previously built to resolve this item.
(Closed) Unresolved item (78-12-02): Pipes embedded in concrete.
The S&W site project structural engineer, with the concurrence
of OLC's structural engineer, has provided engineering justification
for variance with ACI 318 Code, Section 6.3.2.2 which limits fluid
temperatures not in excess of 150 F.
The justification states that
under normal operation the recirculation spray suction piping
temperature does not exceed 1500F. Only during a LOCA does the
sump water temperature reach 220 F, and the embedded pipe has been
installed with 1" insulation which provides sufficient gap between
the, pipe and concrete.
Thus during LOCA the high temperature will
not a ffect the ability of the system to operate or degrade the
concrete that would affect the structure.
The enginecring justification
also refers to ASME Section III Division 2 (ACI 359), CC 3440,
which permits accident, or any other short time period, temperatures
up to 3500F.
The inspector considers the above to provide satisfactory
justificatio ;,..
5.
Unresolved Item Identified Thi3 Inspection
Non-shrink grout, Masterflow-713, as manufactured by Master Builders
is being used at the site for grouting equipment supports embeds,
and is specified for use in modification of lower pump cubicle struc-
tural design. _he inspector determined that (a) no inspection and/or test
T
requirements exist for acceptance of the grout at delivery onsite,
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(b) no inspection and/or test is specified for user verification of
the properties of grout during use (except strength test of cubes
ASTM-C-109), and (c) no inspection and/or test are required for per-
formance evaluation of the grout after placement / installation.
During the course of his inspection, the inspector could not obtain
the purchase order issued for the supply of this material for ascer-
taining the required documentation prescribed by the P.O.
In dis-
cussion with site personnel, the inspector was infonned that a
certificate of conformance or a certificate of compliance for the
material is submitted by the supplier at the time of delivery.
However, no such certificate was available at site for review by
the inspector.
This item is considered unresolved, 412/78-14-01.
6.
Unresolved Items
Unresolved items are matters about which more information is required
in order to ascertain whether they are acceptable items or items of
noncompliance.
An unresolved item disclosed during this inspection
is discussed in Paragraph 5, resolution of previously identified items
are discussed in Paragraph 4.
7.
Exit Interview
At the conclusion of the inspection on December 14, 1978, a meeting
was held at the site with representatives of the licensee. and con-
struction. management-engineer organization. The inspector summarized
the results of the inspection as described in this report.