ML19253C423
| ML19253C423 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 10/24/1979 |
| From: | Crossman W, Oberg C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML19253C421 | List: |
| References | |
| 50-482-79-17, NUDOCS 7912050473 | |
| Download: ML19253C423 (5) | |
See also: IR 05000482/1979017
Text
{{#Wiki_filter:..-..- ..... - ..... - .. ....... . - - - ... . U. S. NUCLEAR REGULATORY C0rDilSSION OFFICE OF INSPECIION AND ENFORCEMENT REGION IV Report No. STN 50-482/79-17 Docket No. STN 50-482 Category A2 Licensee: Kansas Gas and Electric Company Post Office Box 208 Wichita, Kansas 67201 Facility Name: Wolf Creek, Unit No. 1 Inspection at: Wolf Creek Site, Coffey County, Burlington, Kansas Inspecticn conducted: September 17-20, 1979 /dMt//79 ' Inspector: - C. R. Oberg, Reactor Inspector, Projects 'Date Section / Oj 2 7 fP Approved: ,~ W. A. Crossman, Chief, Projects Section Date Inspection Summary: Inspection on September 17-20, 1979 (Report No. STN 50-482/79-17) Areas Inspected: Licensee action on previous inspection findings; Essential Service Water (ESW) discharge structure; preparations for placing concrete in the Containment Building; ccnstruction activities in the Auxiliary Build- ing; and Ultimate Heat Sink (UHS) dam work. The inspection involved twenty-eight inspector-hours on site by one NRC inspector. Results: Of the five areas inspected, no items of noncompliance were identified in four areas. One app, rent item of concompliance was identi- fied in one area (infraction - failure to follow procedures in regard to , reviewing qualifications of blasting specialist prior to commencement of l blasting for UHS discharge structure foundation - paragraph 6). I ! I 1504 135 ' . . 7912 050 h/ ){{}
. . . - - - DETAILS 1. Persons Contacted Principal Licensee Personnel G. L. Koester, Vice President Operations
- G. L. Foutz, Construction Manager
- M. E. Clark, Manager, Site QA
- T. C. Newman, QA Engineer
- R. W. Miller, QA Technician
- D. W. Prigel, Assistant QA Manager, Site
Daniel International
- R. Scott, Construction Manager
- W. E. Hitt, Project Manager
- I. Hussain, Assistant to Project Manager
- V. J. Turner, Project QA Manager
- R. Green, Construction Engineering Manager
- D. J. Dannison, Assistant QC Manager
D. J. Harris, Area Civil Engineer Others .
- R. D. Brown, Cite Representative, SNUPPS
'
- R. Seiple, Resident Geotech, Dames & Moore
. D. Blake, Blaster, Clarkson Construction Company The IE inspector also interviewed other licensee and contractor employees including members of the QA/QC and engineering staffs. i
- Denotes those present at the exit interview
2. Licensee Action on Previous Inspection Findings t (Closed) Noncompliance (STN 50-482/79-09); Failure to Conduct Quality Control Inspection. The IE inspector reviewed the applicable work pro- cedures, specification and Quality Control inspection requirements as related to the excavation, construction and testing operations for the ' UHS dam. The license.e has confirmed 1/ that all work on the dam is i safety related. The IE inspector verified, by review of records and discussion with licensee representatives, the following: Dames & Moore has been assigned the responsibility by KG&E to a. provide services for test blasting ano blast monitoring; reviewing 1/ KG&E ltr to RIV octed October 1, 1979
1504 136 ' 2 . ~ _~ - .a w m m-
' . and approving blasting plans, reviewing results of blasting, and pre-blast surveillance of operations. b. Daniel QC will monitor and test placement of dam materials after approval and mapping of dam foundations by Dames & Moore. c. Work procedures as required by Specification A-3824 for Clarkson activities have been issued and approved by Daniel. This item is considered closed. (Closed) Unresolved Item (STN 50-482/79-09); The IE inspector reviewed the Clarkson Construction Company Blaating Procedure, B-1 of May 19, 1979, Revision 0. The following was verified: The referenced procedure has been approved and assigned a control a. number. b. A revision number has been assigned. c. Review of the revised procedure was completed on May 19, 1979, by Daniel and Dames & Moore. d. The procedure is being followed by Clarkson and Dames & Moore. This item is considered resolved. . 3. Site-Tour The IE inspector walked through various areas of the construction site to observe activities in progress; to inspect the general state of house- keeping; to observe activ_ ties in the ESW discharge structure and UHS; and to observe preparations relative to concrete placement in the Reactor Containment Building (RCB) wall. The IE inspector noted an accumulation of water around, and deterio- ration of protection for, equipment anchor bolts of major safety-related equipment in the RCB; the temporary storage of stainless steel drain lines; and potential accountability problems relating to storage of several pieces of small pipe. These small pipe pieces had been flooded and were awaiting clean up. (See KG&E Report on Flood Damage in Auxiliary Building dated July 13, 1979) During the tour, the licensee representatives initiated corrective action on these items. This matter is considered unresolved and will be reviewed in a. subsequent inspection. These items were discussed at the exit interview. 1504 137 3 _ _ _ . . - , _ _
. . . - _ _ _ .. _ . _ - _ _ _ _ _ _ _ _ . _ . . _ _ _ _ _ _ _ _ . . _ . . . _ . . . _ _ _ . . _ . _ . . _. ._. ._. . 4. Concrete Cylinder Compressive Strength Tests The IE inspector reviewed information (Summary of Cylinder Compressive Strengths, September 7, 1979) of cylinder compressive tests relating to concrete Mix Design 661-AN, a design strength of 6000 psi at 90 days, which is used in the RCB walls. The average strength of concrete for 90 day cylinders tested was 7927 psi, while 28 day strength tests averaged 6797 psi. The acceptance criteria of ACI 318, Section 4.3.3 for , individual tests and average of three consecutive tests is being met. i No items of noncompliance or deviations were identified. 5. Placing of Reinforcing Steel in RCB Wall The IE inspector observed the preparation for RCB wall, Lift No.13. In particular, the bending of rebar shear ties beyond tolerances to conform to placement restrictions in the wall was questioned. Bechtel Specification No. 10466-C112(Q) and Daniel Procedure WP-IV-101, " Rein- forcing Steel Placement," (Revision 2, May 17, 1979) were reviewed. It was noted that some of the shear ties had been bent beyond the fabrica- tion tolerances specified in the ACI Detailint Manual. After discussion of this item with the licensee representatives, the IE inspector determined that this should be considered an unresolved item. Bechtel will ' review the NCR (nonconformance report) issued by QC. 6. Ultimate Heat Sink (UHS) A tour of the UHS construction area was made by the IE inspector in company with Dames & Moore and KG&E representatives. Specific attention was given to the clearing of material from the bearing surface of the UHS dam. The foundation preparations are reported to be about 80% com-
plete. Dames & Moore personnel were in the process of mapping the area. The IE inspector also examined the work being done in preparation i for blasting in the ESW discharge structure area. Sargent and Lundy Specification A-3854, " Lake Work," paragraph 302.9e requires that the contractor, Clarkson, assign a specialist for using explosives for foundation excavation. His qualifications are subject to the approval of the purchaser (Daniel). The IE inspector determined that the qualifications of the specialist involved in the work had not been approved by the Daniel engineer. A blast had been carried out on the previous Saturday by this specialist. Upon discussion of this matter with licensee representative, blasting work was delayed by Daniel until proper review of the blaster's qualification was completed. Failure to review the specialist's qualification is not in accordance with 10 CFR 50, Appendix B, Criterion V, in that the requirements of the specifications were not followed. . 1504 138 4 --- _ _ , _ _ _ . , . . .
. - - . . . 7. Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of non- ,
compliance, or deviations. Two unresolved items disclosed during the , inspection are discussed in paragraphs 3 and 5. i I 8. Exit Interview The IE inspector met with licensee representatives (denoted in paragraph 1) at the conclusion of the inspection on September 20, 1979. The IE The item inspector summarized the scope and findings of the inspection. of noncompliance was acknowledged by the licensee representative. t l ! u 1504 139 o ' i i ! I i i r 9 5 }}