ML20211F583
| ML20211F583 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 02/28/1978 |
| From: | Oprea G HOUSTON LIGHTING & POWER CO. |
| To: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20150F241 | List:
|
| References | |
| FOIA-85-378 ST-HL-AE-244, NUDOCS 8610310205 | |
| Download: ML20211F583 (3) | |
Text
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Houston. Texas 77001 February.28 1978 1
PQ Box 1700 I
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C-0570 Mr. W. C. Seidle, Chief Reactor Construction and Engineering Support Branch U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement
~~
Region IV 611 Ryan Pla a Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
RESPONSE TO NRC INSPECTION FINDINGS S0lmi TEXAS PROJECT ELECTRIC GENERATING STATION DOCKET NO. 50-498 AND 50-499
Dear Mr. Seidle:
The following is our response to the infractions (Appendix A) identified in IE Inspection Report No. 50-498/78-01 and 50-499/78-01 dated January 27, 1978.
A) Actions to Correct Problems
- 1) Infraction - Cold Weather Concreting An investigation of factors in this incident revealed that Construction Procedure A040KPCCP-4, Revision 3, l
was violated primarily due to interpretation problems with ACI 306 as to whether cold weather conditions l
existed or not on the Bay of the infraction. ne interpretation problem has been solved by revising South Texas Project Specifications 2A010CS028-E,
" Concrete Construction" and 2A010CS001-F, " Concrete Supply" to clarify and define cold weather conditions.
I Further, Construction Procedure A040KPCCP-4 has been l
revised to reflect the specification requirements.
8610310205 860930 PDR FOIA GARDE 85-378 PDR
Asics Ughting.& Pher CompanJ 333 Mr. W. C. Seidle j
February 28, 1978 Page two
- 2) Infraction - Improper Vibration 1
Inspections of both placements after form removal by B6R QA/QC, B5R Construction and HLSP QA revealed no indications that proper consolidation had not been achieved.
Both FH1-W20 and FH2-WSA, W6 and W7 re-quired minor cosmetic repairs, but neither case was caused by improper vibration.
Quality Control Inspectors were retrained and recertified to correct the problem of their not detecting and correct-ing the improper vibration technique.
See paragraph E) 2) below for additional information.
B) Actions to Preclude Recurrence
- 1) Infraction - Co1d Weather Concreting, O. p,-
_BJR, procedures,and specifications have.be.en. revised q
and are being complied with. HLSP OA surye Q1an_ce checklists hav.e_been.. revised..to. incorporate _these changes.
HLSP QA will continue to monitor B5R com-pliance with the applied requirements.
- 2) Infraction - Improper Vibration HL5P QA issued Stop Work Request #1 on Monday, January 16, 1978. This request stopped all concrete placement activities in the main plant area.
Corrective action and recurrence control were required for lifting the Stop Work Request.
B5R QA/QC held retraining for placement inspectors on January 20 and 21, 1978. The placement inspectors were recertified after successful completion of examinations, subject to HLSP approval.
B6R' Construction held a refresher course on concrete vibration for foremen on January 19, 1978.
HLSP QA has increased routine daily surveillance of placement activities and has added an item concerning vibrator operation to the appropriate surveillance check-list.
I
e 331 Houston Lghbng & 6er Company i
Pz. W. C. Seidle February 23, 1978 Page three Date Action Will Be Completed and Full Compliance Achieved C)
Full compliance as described above has been achieved since January 23, 1978.
Revisions to documents as described above were completed by February 17, 1978.
Very truly yours,
').
,s' p
/
EIcuti ice President
,/
GWO/cas cc:
Mr. R. A. Frazar Jh. H. L. Kev Mr. T. H. Gamon (BSR)
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