TXX-6061, Interim Deficiency Rept CP-86-66 Re Vertically Placed Rebar That May Not Satisfy Criteria of Code Defined Lap Splice. Initially Reported on 860926.Evaluation Shows Supports Not Installed in Correct Location.Next Rept Expected by 861205: Difference between revisions
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{{#Wiki_filter: | {{#Wiki_filter:Log # TXX-6061 File # 10110 903.8 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER. 400 P60RTl4 OLIVE STREET. LB. 81. DAI.LAS. TEXAS 75381 October 27, 1986 E'#1".hD.TML | ||
.%"@'(U3;.jg;y(,;!?:%. | |||
F | F | ||
,k f Mr. Eric H. Johnson, Director OCT 3 l 1986 Division of Reactor Safety and Projects U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012 | |||
U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012 | |||
==SUBJECT:== | ==SUBJECT:== | ||
| Line 28: | Line 26: | ||
==Dear Mr. Johnson:== | ==Dear Mr. Johnson:== | ||
On September 26, 1986, we verbally notified your Mr. I. Barnes of a potential deficiency regarding vertically placed rebar exposed during the inspection of core bores in the Auxiliary Building that apparently do not satisfy the criteria of a code defined lap splice. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). | On September 26, 1986, we verbally notified your Mr. I. Barnes of a potential deficiency regarding vertically placed rebar exposed during the inspection of core bores in the Auxiliary Building that apparently do not satisfy the criteria of a code defined lap splice. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). | ||
Additional concrete has been removed from a portion of an Auxiliary Building wall approximately 147 feet long at El. 815 feet. Engineering evaluation of exposed reinforcing steel has concluded that two (2) vertical dowels and two (2) lap splice bars have not been installed within their prescribed location. | Additional concrete has been removed from a portion of an Auxiliary Building wall approximately 147 feet long at El. 815 feet. | ||
Engineering evaluation of exposed reinforcing steel has concluded that two (2) vertical dowels and two (2) lap splice bars have not been installed within their prescribed location. | |||
One of the lap splices conforms to co N requirements for a non-contact lap splice and one does not. | One of the lap splices conforms to co N requirements for a non-contact lap splice and one does not. | ||
Calculations are being prepared to represent " worst case" conditions which assume that one (1) M-contact lap splice bar and two (2) vertical wall bars do not provide any strength to the wall. The anticipated completion date for these calculations is November 14, 1986. We will submit our next report on this issue no later than December 5, 1986. | Calculations are being prepared to represent " worst case" conditions which assume that one (1) M-contact lap splice bar and two (2) vertical wall bars do not provide any strength to the wall. The anticipated completion date for these calculations is November 14, 1986. We will submit our next report on this issue no later than December 5, 1986. | ||
Very truly yours, | Very truly yours, 8611040405 861027 PDR ADOCK 05000445 | ||
[/ | [/ | ||
p W. G. Counsil JCH/mlh c - NRC Region IV (0 + 1 copy) | S PDR p | ||
W. G. Counsil JCH/mlh c - NRC Region IV (0 + 1 copy) | |||
Director, Inspection & Enforcement (15 copies) | Director, Inspection & Enforcement (15 copies) | ||
U. S. Nuclear Regulatory Commission Washington, D.C. 20555 y | U. S. Nuclear Regulatory Commission Washington, D.C. | ||
20555 y | |||
a on,suas or nus enunus necruic anunsr | |||
,}} | |||
Latest revision as of 23:14, 5 December 2024
| ML20211H062 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/27/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-66, TXX-6061, NUDOCS 8611040405 | |
| Download: ML20211H062 (1) | |
Text
Log # TXX-6061 File # 10110 903.8 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER. 400 P60RTl4 OLIVE STREET. LB. 81. DAI.LAS. TEXAS 75381 October 27, 1986 E'#1".hD.TML
.%"@'(U3;.jg;y(,;!?:%.
F
,k f Mr. Eric H. Johnson, Director OCT 3 l 1986 Division of Reactor Safety and Projects U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 NON-CONTACT LAP SPLICES IN THE AUXILIARY BUILDING SDAR: CP-86-66 (INTERIM REPORT)
Dear Mr. Johnson:
On September 26, 1986, we verbally notified your Mr. I. Barnes of a potential deficiency regarding vertically placed rebar exposed during the inspection of core bores in the Auxiliary Building that apparently do not satisfy the criteria of a code defined lap splice. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e).
Additional concrete has been removed from a portion of an Auxiliary Building wall approximately 147 feet long at El. 815 feet.
Engineering evaluation of exposed reinforcing steel has concluded that two (2) vertical dowels and two (2) lap splice bars have not been installed within their prescribed location.
One of the lap splices conforms to co N requirements for a non-contact lap splice and one does not.
Calculations are being prepared to represent " worst case" conditions which assume that one (1) M-contact lap splice bar and two (2) vertical wall bars do not provide any strength to the wall. The anticipated completion date for these calculations is November 14, 1986. We will submit our next report on this issue no later than December 5, 1986.
Very truly yours, 8611040405 861027 PDR ADOCK 05000445
[/
S PDR p
W. G. Counsil JCH/mlh c - NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D.C.
20555 y
a on,suas or nus enunus necruic anunsr
,