ML19270G541
| ML19270G541 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 04/23/1979 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML19270G539 | List: |
| References | |
| NUDOCS 7906130033 | |
| Download: ML19270G541 (2) | |
Text
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1 i
' l KANSAS GAS AND ELECTRIC COAfPANY
' TPes mLsc7seeC COMm4NF GLENN L. MQE S T E M vict Patteot=v opt mations April 23, 1979 Mr. W.C. Seidle, Chief Reactor Construction and Engineering Support Branch U.S. Nuclear Regulatory Commission Region IV 611 Ryr.n Plaza Drive, Suite 1000 Arlington, Texas 76011
Subject:
Response to Inspection Report 50-482/79-03
Dear Mr. Seidle:
This letter is written in response to your letter of March 14, 1979,
<nich transmitted Inspection Report 50-482/79-03. As requested, each finding is being addressed in three parts:
a)
Corrective steps which have been taken and the results
- achieved, b)
Corrective steps which will be taken to avoid further non-compliance, and c)
The dates when full compliance will be achieved.
Finding During placement OC-241-W-2 on November 14, 1978, the constructor caused concrete to flow underneath the containment building equip-ment hatch. Due to the equipment hatch diameter of twenty feet, the concrete was caused to flow a distance greater than five feet from the point of deposition.
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Response
a)
A Work Hold Agreement was issued on December 18, 1978, to stop the placement of all safety-related concrete. An Ad Hoc Committee was established by Daniel to investigate quality-related problems and to make recommendations for their solution.
7906130033 201 N. Market - Wichita, Kansas --- Mail Address: P. O. Box 208 / Wichita, Kansas 672cl - Telephone: Area Code (316) 264-1111
Mr. W.C. Seidle April 23, 1979 The charter of this Committee was established by Mr. Howard McCall's letter of December 16, 1978. The charter is also described in Mr. Seyfrit's letter to me dated December 19, 1978. The Committee performed their investigations and issued a report containing specific recommendations for improving the quality of work. These recommendations were carried out and were verified. The Work Hold was lifted on March 3, 1979.
However, when concreting work resumed, a similar type incident occurred on March 8,1979, during a placement which was identified as being difficult. A KG&E Stop Work Order for all "Q" concrete was issued, and Daniel issued their own Stop Work Order on difficult concrete placements. Additional corrective action was taken, including replacing two supervisors responsible for concrete work and re-training of the concrete crew.
On March 22, release of our Stop Work Order was made, while Daniel's hold on difficult placements remained in effect.
After several nondifficult placements were completed satis-factorily, Daniel lifted their Hold and proceeded to make difficult placements. Daniel is making only one difficult placement at a time and will proceed without restriction after high confidence levels are established.
Since March 22, no placing errors have been identified.
b)
Intensive training programs have been conducted for all concrete cre,ws and for supervisory personnel responsible for concrete activities. Procedures for controlling concrete activities have been revised to imprcve their effectiveness.
c)
All corrective actions are completed and full compliance achieved.
Yours very truly, ft/h Y
GLK:bb 2337 115