ML20083J829
| ML20083J829 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 12/30/1983 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Gagliardo J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, KMLNRC-83-169, NUDOCS 8401100330 | |
| Download: ML20083J829 (2) | |
Text
-
i KANSAS GAS AND ELECTRIC COMPANY THE ELECT AC COMPANY
,oI [.,
December 30, 1983 hi
\\-
8 9
w' 3 W i
Mr. J. E. Gagliardo, Acting Chief Reactors Projects Branch U.S. Nuclear Regulatory Commission
~, _
Region IV l
611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 KMLNRC S3-169 f
Re:
Docket No. STN 50-482 l
Ref:
1)
Interim Report KMLNRC 83-021 dated 3/3/83 l
from GLKoester, KG&E, to WCSeidle, NRC 2)
Interim Report KMLNRC 83-076 dated 6/20/83 from GLKoester, KG&E, to WCSeidle, NRC 3)
Interim Report KMLNRC 83-116 dated 9/9/83 from GLKoester, KC&E, to WCSeidle, NRC Subj: Interim 10CFR50.55(e) Report - Insufficient Torque on Structural Steel Bolted Connections
Dear Mr. Gagliardo:
This letter provides an interim report and expands the scope of a 10CFR50.55(e) matter concerning structural steel bolted connections. This item was initially reported by Kansas Gas and Electric Company (KG&E) on February 4, 1983, and supplemental information was provided in References 1), 2) and 3).
)
The original concern identified in References 1) and 2) was that there were no j
procedures which required the crafts to notify Quality Control prior to removal
)
of any structural steel items which had been previously Quality accepted. There-fore, scme structural steel bolted connections were inadequately tightened as a result of rework accomplished after Quality acceptance of the connection. Correc-tive Action Report (CAR) 1-C-0026 was subsequently issued to provide appropriate documentation of the corrective actions being taken. Reference 2) provided a description of the corrective actions identified in the CAR.
The actions asso-ciated with CAR l-C-0026 have been completed, the CAR has been closed by the Construcm r, and the results are now under review by KG&E.
The scope f this 10CFR50.55(e) has recently been expanded to include additional concerns with bolted connections. The primary concern at this point is the lack of procedural controls for connections made using " turn-of-the-nut" rather than Load Indicating Washers. A Nonconformance Report has been initiated to document those connections made using " turn-of-the-nut" without adequate procedures and the integrity of these connections will be evaluated. The appropriate procedures have been revised to provide appropriate controls for use of " turn-of-the-nut."
0 i
f 840110032 831230 lb PDR ADOCK 05000482 S
PDR IO 201 N. Market - Wictuta. Kansas - Mail Address: PO. Box 208 I Wicto,1 ensas 67201 - Telephone: Area Code (316) 261-6451
}
a KMLNPC 83-169 L
Mr. J. E. Gagliarrio December 30, 1983 When the lack of procedural controls for " turn-of-the-nut" was initially identified, a question was also raised about FSAR Section 17.1.2, para-graph m, in which a Region IV inspector interpreted the paragraph to mean that all high strength bolted connections throughout the plant were to be made using Load Indicating Washers. This paragraph was into.: Jed to expand the scope of ANSI N45.2.5 (1974) with regard t.c the installation of high strength bolts for structural steel connections to allow the use of Load Indicating Washers and does not conunit the SNUPPS pajects to the use of Load Indicating Washers for all bolted connections.
Other issues related to bolted connections have also been raised and are under investigation at this time. These primarily deal with procurement, installation, and quality inspection procedures for load ir.dicating washers.
The status of this 10CFR50.55(e) will be carried on the monthly status up-dates as File 53564-K76 and the final report or any significant new informt.-
tion will be submitted under secarate correspondence. In the interim, please direct any questions concerning this subject to me or Mr. Otto Maynard of my staff.
Very truly yours,
- 1V Y
GLK cks I
cca WSchum W
i c
--m-.
,v
, - - - +
e--
., - - --. --. -.,.- -