ML20137J034

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Rev 7 to Procedure QI-QP-11.0-15, Verification of Base Plates for Grouting
ML20137J034
Person / Time
Site: Comanche Peak  
Issue date: 05/24/1984
From: Warner M
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-15, NUDOCS 8512020534
Download: ML20137J034 (6)
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t-TEXAS UTILITIES GENERATING CO. l INSTRUCTION l REVISIONl ISSUE I

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CPSES l

QI-QP-11.0-15 '

7 1 of 6 i

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.c PREPARED BY:[//b[?Mf? //a.w i. 5.'V-24 VERIFICATION OF CATE

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EASE PLATES FOR W

GROUTING APPROVED BY:. f E.w O*.W/.

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1.0 REFERENCES

1-A Gious and Hill Specification 2323-55-9, "Concre te" 1-B QI-QP-2.1-21, " Qualification of Baseplates fo r Grouting Verification Personnel" 1-C QI-QP-11.0-6, " Inspection of Groutin

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1-D CP-QP-18.0, " Inspection Re

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1-E CEI-25, "Groutin y,.S 11 and Ceiling Plates" 1-F CP-QP-15.,h N t.

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1-G CP-QP-16.

duonformances" l

1-H QI-Q AP-11. "1-28,

" Fabrication, Installation, Ins pection of Components, Supports, Class 1,

2, 3."

2.0 PURPOSE AND SCOPE l

The purpose of this instruction is to provide the criteria and frequency to be used when performing verification of seismic wall and ceiling and floor mounted component support base plates located in Seismic Category I Buildings for grouting in accordance with the requirements of Reference

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1-A.

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l 2.1 Quali ty Control personnel using this instruction shall be cognizant of the requirements of Reference 1-B of this I

instruction.

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8512O20534 851106 PUR FOIA C ARDE8 5-59 PDR TUGCC CA

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INSTRUCTION ISSUE RNSION PAGE NUMBER DATE

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CPSES

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QI-QP-11.0-15 7

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3.0 INSTRUCTION 3.1 BASE PLATE GROUTING AND SHIMMING 3.1.1 Inside Containment Use Gaps be tween the base plate and the concrete shall not exceed 1/16" for a minimum of 80% of the base plate.

The gap between the plate and concrete for a maximum of 20% of the plate may exceed 1/16 inch but at no point shall the i

gap exceed 1/2 inch.

The gaps shall be measured from the l

periphery of the base plate (See attached example).

If these ::onditions cannot be me t the gap shall be filled j

j with epoxy grout.

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3.1.2 Outside Containment Use l

Gaps between the base plate and the concrete shall not 4

j exceed 1/16".for a minimum of 80% of the base plate.

The I

gap between the plate and concrete for a maximum of 20% of the plate may exceed 1/16 inch but at no point shall the 4

gap exceed 1 inch.

The gaps shall be measured from the i

periphery of the base plate (See a ttached example).

If l

these conditions cannot be met the gap shall be filled with-1 l

epoxy grout.

3.1.3 Shim material my consist of steel shim plates or washers of a size necessary to allow proper Hilti bolt torquing without

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. base plate defomation.

The grout fill holes shall be 1/4".

I diamater and shall not be drilled within 1 inch of a l

concrete anchor.

Addi tionally, the grout fill holes shall be located outside the bolt hole pattern.

I NOTE:

Floor munted camponent supports that are not flush mounted require shimming and grouting and shall be verified by Quality Control inspectors per Reference 1-C.

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3.2 DOCUMENTATION j

Inspections shall be recorded on an Inspection Report in accordance with Reference 1-D.

This Inspection Report may be included as attributes on an Inspection Report generic l

l to a specific hanger inspection instruction (i.e., cable-tray supports, conduit supports, etc.) as outlined in that-l specific instruction, i

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Hangers inspected by the craf t as required per Referer.ce 1-E li!

do not require a Bearing Inspection Report (Attachment 2) written for grout placement purposes.

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TUGCO CA pami 'ea i

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i INSTRUCTION ISSUE REVISION PAGE NUMBER DATE TEXAS UTILITIES GENERATING CO.

CPSES

]I-QP-11.0-15 7

3 of 6 M 2 9 Icy

'Al 1 unsatisfactory conditions ';halI be doctsnented on an IR and/or a NCR per Reference 1-D and 1-G respectively.

IR's i

shal l be processed as directed by the QA/QC Supe rvi so r.

j A reject tag may be applied to "unsat" items per Reference 1-F.

l During Room Turnover activities or as areas are statused i

" complete for grout" by Area Management, a verification I

"wa l kdown" may be completed by QC inspectors to verify adequate bearing.

This "wal kdown" shall be a minimum frequency of ten baseplates of each type of attached item l

(pipe support, cable tray hanger, structural platform, etc.)

j in each area, but not more than twenty of each i tem., This "walkdown" inspection shall be documented on an Inspection l

Report (Attachment 3).

I Deficiencies identified during this "walkdown" shall be reviewed by the applicable QA/QC Supervisor for evaluation i

of a change in inspection frequency in the affected area.

If fu rther inspectica is required, the Inspection Report

( A ttachment 3) shall designate the requi red frequency.

i Closure of discrepencies identified on IR's 'and NCR's may l

be accomplished by QC Inspectors sati'sfying the requirements of Reference 1-B or Reference 1-H and Quali ty Control l

Procedures / Instructions that delineate basepla te grouting verification.

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ATTACHMENT 1 l

EXAMPLE: BASE PLATE 10" x 10" X

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2 Base Plate 100 inches 80" 1/16" gap Cross-hatched area may be up to h"or 1" gap per oara. 3.1.2.

iD total area does not exceed 20 sq: inches.

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ISEISMIC SUPPORTS IN A60VE REFERENCED AREA SATISFY l

I IPEAQ!NG RE0'Jf REMENTS P[0 PARAGDAPH 3.1.

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All inspectors perfoming room verification to sign this IR.

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