ML20141K430

Trip Rept of 850126 Site Visit Re Observation of Schmidt Hammer Tests,Seismic Air Space Between Structures & Insp of Portion of Exposed Ceiling in Control Room.List of Attendees & Comments Encl

ML20141K430
Person / Time
Site:	Comanche Peak
Issue date:	02/07/1985
From:	Shao L NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
To:	Noonan V NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
References
NUDOCS 8601220519
Download: ML20141K430 (4)

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-; Docket tios.: 50-445 50-446 IJ.t M W IUt,FOR: Vincent S. Locnas., Diretter

Corcncht Fett Proje:.t FkO!i: Lawrer.ce C. Shao, Gruup Leader Civil /licchor.icol Group:.

Comanche Pc:L ltcht.ict.1 liview Teac SUE. JECT: SITE VISIT LY Tt'E TET CIVIL /STLUCTURAL TEA!;

Civil / Structural cer.bers of the Tii visited the Coranche Peak Fro 3cct Sitt. on i January 26, 1985, and met with the represent 6tives of the Texhs Utilities Gcoercting Corapany (10GCO) onc theli contrcctor:.. The purposes of the visit t' were:

i (c) To observe Schr.iot hon cr Tests;

' (b) To observe ingestig:. tion ef st.ist.iit air space betwoon structures; ano j (c) To inspect portion of cxpcseo ceiling in the control room.

Seven Schmidt. Hamer Tests wer: witnessed. The location cf the observed tests is prcsioed in Enclosurc 1.

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I Aitt.r the sitt tour, the teac. cc. with th:.- TUGCL representatives ano their I cor.trictor.s '(set- Ent195ure ' for the list of attendtes) and discussed the observatior.s r.ade durino the trip. A list et I,ht/TkT corments coveril:9 the-

. field obscrvitions is att achec (Li:ciosure 3).

f Original siped W L.C.Shao n LbWrinct L. Shdo, Group Leader b.e5 Livil/iechanical Groups.

Cou nch. Fe=L Tcchnical Review Teer, L:) E.iclosures: As stated DISTRIBUT10ti:

u RMinogue pg cc: Tl:1 Group Leacers Dross oc J. Zudens D. Jeng 7 R. C. Tang GArlotto p R. Philico LShao en 1. Langowski DJeng #q t o.o RLipinski 8I s J. Devers I

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ENCLOSURE 1 Schmidt Hammer Tests Witnessed-Test Traveler Pour Package Location

-1 TR-85-132-8904 002-7810-001-DDDD Aux Bldg. 810'-6" Slab 2'-0" East of E-A 3'-6" South of 2-A I 2 TR-85-131-8904 002-7810-001-EE Aux Bldg. 810'-6" Slab j 10'-5" West of F-A -

10'-0" South of 4-A 3 TR-85-002-8904 002-4810-002-H Aux Bldg. 820'-6" 11'-0" North of 5-A-West Face of H-A Wall 4 TR-85-022-8904 002-4810-015-M Aux Bldg. 821'-6" 16'-2" North of 5-A West Face of G-A 5 TR-85-061-8904 002-2790-001-11 6 TR-85-011-8904 002-4790-038-G 7 TR-85-123-8904 002-5778-001-D Observed concrete preparation for Schmidt Hammer Test for Traveler TR-85-112-8904, Pour Package 002-7810-003-CC.

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ENCLOSURE 2 Attendees at January 28, 1985 Heeting Nane Affiliation D. Witt TERA C. Hooton TUGC0 D. Jeng NRC/TRT R. Lipinski NRC/TRT ,

I M. Wells CPPE Civil Engineering C. Mortgat TERA

. T. Langowski NRC/TRT J. Devers NRC/TRT R. Philleo Consultant (NRC/TRT)

T. Wright TUGC0 F. Webster JBA, Inc.

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a ENCLOSURE 3 NRC Comments After Field Tour

1. Need to document the depth of surface preparation.

2. For areas already tested, verify that their preparation depths are 1/4" or greater (per testing procedure requirement). For those areas with lesser depths, either regrind to provide the needed depth or perform chemical test to show that the carbonized concrete was eliminated. .

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3. Are operators qualified properly? Documentation of their training should be complete.

4. Be sure readings are taken correctly in congested areas.

5. John Devers will witness areas to be tested in the Reactor Building and tests applied to underside of slabs.

6. Gap Documentation - Need as-built gap measurements and types of debris that are left in place.

7. NRC is ready to officially receive TUEC revised action plans.

8. NRC requested a copy of all the Schmidt Hammer Test results that were witnessed on January 28, 1985. These will be given to John Devers before he leaves the site on January 29, 1985.

4 Control Room Ceiling Status

1. Analysis of restraints of the ceiling architectural features (louvered panels, cross tees, etc.) is now being performed.

2. Restraints to limit lateral movement of the unistrut grid are being designed.

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