TXX-6108, Interim Deficiency Rept CP-86-12 Re Commodity Installations at Secondary Wall Design Gaps.Initially Reported on 860227. Relative Movement Criteria Will Be Included in Insp Procedure to Ensure Min Separation.Next Rept by 870123: Difference between revisions
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Log # TXX-6108 File # 10110 903.7 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER . 400 NORTil OLIVE STREET. l.B. el . DALLAS. TEXAS 18301 November 21, 1986 | Log # TXX-6108 File # 10110 903.7 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER. 400 NORTil OLIVE STREET. l.B. el. DALLAS. TEXAS 18301 November 21, 1986 I'J@@$UU{3k | ||
= = =. =, | |||
I'J@@$UU{3k | 1 NOV 2 41986 Mr. Eric H. Johnson, Director U. S. Nuclear Regulatory Commission y | ||
Division of Reactor Safety and Projects 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 | |||
==SUBJECT:== | ==SUBJECT:== | ||
| Line 27: | Line 27: | ||
==Dear Mr. Johnson:== | ==Dear Mr. Johnson:== | ||
On February 27, 1986, we verbally notified your Mr. T. Westerman of a deficiency involving attachments at, or in close proximity to, design gaps between secondary walls and adjacent walls / floors. | |||
On February 27, 1986, we verbally notified your Mr. T. Westerman of a deficiency involving attachments at, or in close proximity to, design gaps between secondary walls and adjacent walls / floors. This is an interim report of a potentially reportable item under the provision of 10CFR50.55(e). Our last interim report was logged TXX-5007, dated September 12, 1986. | This is an interim report of a potentially reportable item under the provision of 10CFR50.55(e). | ||
Our last interim report was logged TXX-5007, dated September 12, 1986. | |||
Since the last interim report, our approach to evaluate the installed commodities from a generic displacement standpoint has been superseded by the following activities. The secondary wall relative movements will be l | Since the last interim report, our approach to evaluate the installed commodities from a generic displacement standpoint has been superseded by the following activities. The secondary wall relative movements will be l | ||
calculated. After determining this information, the affected engineering l | |||
contractors will initiate revisions to the applicable design procedures to incorporate the required relative horizontal and vertical movements between secondary walls and adjacent walls / floors. | |||
These movements will also be used in the performance of a field verification to identify potentially unacceptable interactions and in the engineering resolution of any unacceptable interactions. The relative movement criteria will be included in an inspection procedure to ensure that the minimum separation is maintained for future installations. | |||
We anticipate submitting our next report by January 23, 1987. | We anticipate submitting our next report by January 23, 1987. | ||
Very truly yours, 8612010191 861121 PDR S | Very truly yours, 8612010191 861121 PDR ADOCK 05000445 S | ||
PDR p7 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 | U. S. Nuclear Regulatory Commission Washington, D.C. | ||
20555 i | |||
g A DitISION OF 1EXAS LT1LITIES FLECTRIC CinIPANY W 1341 gg-z?}} | |||
Latest revision as of 02:55, 4 December 2024
| ML20214J183 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/21/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-12, TXX-6108, NUDOCS 8612010191 | |
| Download: ML20214J183 (1) | |
Text
"
Log # TXX-6108 File # 10110 903.7 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER. 400 NORTil OLIVE STREET. l.B. el. DALLAS. TEXAS 18301 November 21, 1986 I'J@@$UU{3k
= = =. =,
1 NOV 2 41986 Mr. Eric H. Johnson, Director U. S. Nuclear Regulatory Commission y
Division of Reactor Safety and Projects 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 COMM0DITY INSTALLATIONS AT SECONDARY WALL DESIGN GAPS SDAR: CP-86-12 (INTERIM REPORT)
Dear Mr. Johnson:
On February 27, 1986, we verbally notified your Mr. T. Westerman of a deficiency involving attachments at, or in close proximity to, design gaps between secondary walls and adjacent walls / floors.
This is an interim report of a potentially reportable item under the provision of 10CFR50.55(e).
Our last interim report was logged TXX-5007, dated September 12, 1986.
Since the last interim report, our approach to evaluate the installed commodities from a generic displacement standpoint has been superseded by the following activities. The secondary wall relative movements will be l
calculated. After determining this information, the affected engineering l
contractors will initiate revisions to the applicable design procedures to incorporate the required relative horizontal and vertical movements between secondary walls and adjacent walls / floors.
These movements will also be used in the performance of a field verification to identify potentially unacceptable interactions and in the engineering resolution of any unacceptable interactions. The relative movement criteria will be included in an inspection procedure to ensure that the minimum separation is maintained for future installations.
We anticipate submitting our next report by January 23, 1987.
Very truly yours, 8612010191 861121 PDR ADOCK 05000445 S
PDR p7 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 i
g A DitISION OF 1EXAS LT1LITIES FLECTRIC CinIPANY W 1341 gg-z?