ML20141K376

Trip Rept of 851011 Audit W/Util,Tera & Comanche Peak Response Team.List of Attendees Encl.Meeting Between Tera & BNL Consultants Will Be Held to Discuss Steam Generator Lateral Restraints

ML20141K376
Person / Time
Site:	Comanche Peak
Issue date:	12/02/1985
From:	Lipinski R NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
To:	NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
Shared Package
ML20141K361	List: ML20141K357 ML20141K373 ML20141K376 ML20141K381 ML20141K383 ML20141K394 ML20141K403
References
NUDOCS 8601220467
Download: ML20141K376 (6)

Text

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oq UNITED STATES

[>3 *8c I'g NUCLEAR REGULATORY COMMISSION (t ( WASHINGTON, D. C. 20656

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....* gg 2 1985 Docket No.: 50-445/446 MEMORANDUM FOR: File FROM: R. Lipinski, Civil / Structural Group Comanche Peck Project TRT

SUBJECT:

AUDIT OF CPRT AND TUGC0 ON OCTOBER 11, 1985 A group of NRC staff and their consultants met with the representatives of Texas Utilities Generating Company (TUGCO), Comanche Peak Response Team (CPRT) and the third party (TERA) and their consultants at the Comanche Peak Project

, site on October 11, 1985 to audit their ongoing activities.

The audit was proceeded by a walkdown through the plant on October 10, 1985.

. During the walkdown the following parts of the plant were visited:

1. Piezameter il next to the Switchgear Building and Safeguard Building intersection. The NRC team was infonned that the water level observed on-October 10, 1985 was 800 feet.. This indicates that the water pressure on structures, taking as a measure top of the_ basement of Safeguard Buildings Elevation 773 feet, is due to 27 feet of water.

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2. The area of the Fuel Building where allegedly rebar had.b'een cut.-

3. The seismic gap in the Safeguard Building, Room 103, at south wall. At the time of the visit the concrete in the gap, which was placed there during construction, had been removed. The team was infonned that the concrete will be replaced with rotofoam.

4. Safeguards Building, Elevation 830 feet. Two-inch diameter and smaller non-seismic conduits were observed (Issue IC). The team was informed that two samples of the conduits are being investigated. One sample taken at random and one engineered sample. There are approximately 130 runs in-each sample.

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5. Cable Tray Hanger (CTH) #15733. Th3 team was infomed ab::ut the prccedure us;d during the CTH walkdown performed in the course of reevaluation cf CTH of Unit 1.

6. Upper and lower steam generator restraint of Unit 1, Compartnent No.1.

7. Cable Tray Supports in Safeguards Building, Room 82, Unit 2. The team observed the nodifications in progress which consist of addition of a vertical plate welded vertically to existing channel section of L-shaped cable tray support.

In continuation of the audit, on October 11, 1985 TRT met with the TUGCO, TERA and their consultants. List of attendees is enclosed. Also enclosed is a copy of the slides which were presented by the CPRT and discussed with the staff during the meeting. In conclusion, the following action items were established to be dealt with in the future:

1. Control room: Drawings and calculations concerning the modification of ,

the ceiling will be discussed with the TRT when they are completed (in about 2-3 weeks).

2. Groundwater: The infomation regarding records of groundwater will be provided to the TRT in about I week. ,

3. Tests on conduit and cable tray supports. CPRT will provide the TRT with the appropriate procedures and schedules as soon as they are formulated and in such time as to allow members of the TRT to observe the tests.

4. Richmond Inserts: One engineered sample will be added to the study.

5. Offs'te hazards: TERA will investigate offsite activities which could affect plant structures and equipment, such as explosions, excavations, etc.

6. Steam generator lateral restraints: BNL staff agreed to provide the results of their analysis to TERA for their infomation.

It was agreed that a meeting between the consultants of BNL and those of TERA will be held in the future to discuss the issue of the steam generator lateral restraints and to exchange information regarding the basic data upon which the lateral restraints were analyzed.

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, cc: L. Shao D. Jeng T. Langowski V. Ferrarini E. Solla l

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r Lit L z1933 Docket No.: 50-445/446 ME!;GRAN00b. FOR: File FR0".: R. Lipinski, Civil / Structural Group Comanche Peuk Project TRT

SUBJECT:

AUDIT OF CPRT AhD TUUCU ON OCTOBER 11, 1505 A group cf NRC staff and their censultants rict with the representatives of Texas Utilities Generating Coc.pany (TUGCO), Couanche Peak Response Team (CPRT) and the third part,7 (TEkA) and their consultants at the Cominche Peak Project

) site on October 11, 1986 to audit their ongoing activities.

i The audit was proceeoed by a walkdown through the plant on 0ctober 10, 1965.

During the walkdawn the following parts of the plant were visited:

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1. Piezameter il next to the Switchgear Building and Safeguard Building intersection. The hkC team was informd that the water level observed on October 10, 19E5 was 800 feet. This indicates that the water pressure on structures, taking as a measure top of the basement of Safeguard Buildings Elevation 773 feet, is due to 27 feet of water.

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2. The area of the Fuel Building where allegedly rebar had been cut.

3. The seismic gap in the Safeguard building, Room 103, at south wall. At the time of tne visit the concrete in the gap, which we.s placed there during constructior,, had been rec,ved. Tne team was inferred thct the concrete will be replaced with rotofoam.

4. Safeguards building Elevation 830 feet. Twa-inch diameter and saialler non-seismic conduits were observed (Issue IC). The team was informed that twa samples of the conduits are being investigated. One sample taken at randu::; and ont engineered sample. There are approximately 130 runs in each sample.

~* - . . . . . . . - - - - - .. - ~ ~ - ~ ~ ~ ~ ~ -

i wne n nu 33 no-soi nacu oua OFFICIAL RECORD COPY-

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5. Cable Tray Hangar (CTH) (15733.

i used during the CTH talkdown perfonaed The tcan in the wascourse infonacd of reevaluation cboutofthe procedur CTH of Unit 1.

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6. Upper and lower steam generator restraint of Unit 1. Coc.partr..ent ho.1. g

7. Cable Tray Supports in Scieguards building, hoca 62, Unit 2. Tha tccm obscrveo the modifications in progress which consist of aedition of 6 vertical plate welded verticolly to existing chant eli section of L-shaped 9 cable tray suppori..

1 I la continuation of the audit, en Octobsr 11,19Cb, TRT c;t with the TUECL, TEPA and their consultants. List of attendees is enclosed. Also enclo uc is a copy ct the slides which were presented by the CPRT and discussed with the stoit curing the maating. In conclusion, the tollowing action ite.ns were establishtd to be dealt with in the future:

1. Control roca: Drawings nnd calculations coacerning the. mditication 01 the ceiling will be discussao with the ThT whc;i they are coc.pleteo (in about 2-3 weeks).

• i . Groundwater: The infornstica regarding records of grour.de:atcr will bc provided to the TRT in abcut I week.

3. Tests on conduit end cable tray supports. CFET will proviac tha TRT with the 4pprcpriatu procedures cr.d schedules as soon 6s they are fonaulated and in such tinc hs to allow cau:.rs of the TRT to ubarve the te:;ts.

4. Richmand Inserts: Ona enginterec sanple will be added to the studj.

5. Offsite ha:ards: TEkA will investigate offsite cctivities which could affect plant structures and equipoc .t such as uplosions, excavations, etc.

b. Stai.". generator laterol restruints. Bhl staff agreed to provice the results of their analysis te TEFA for their inforration.

It w4s 69r ed that c ruetting betwaea the consultants of BRL and these of TERA will be huld in the future to discuss the issue of the steer. generator lateral rutr5ints z.r.d te excncnge infon..ation re9crding the basic cata upon which the latercl restraints wi.re analp ec.

h. Lipinski, Civil Structurcl Group Cec.anche Peck Preject TRT cc: L. Shao D. Jen;,

j DISTRIBUTION:

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