ML20137H104

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Rev 5 to Procedure QI-QP-11.0-6, Insp of Grouting
ML20137H104
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 06/04/1982
From: Welch M
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-6, NUDOCS 8512020320
Download: ML20137H104 (5)
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!NSTRUCTION ISSUE O

TEXAS UT!UTIES GENERATING CO.

NUMBER REVISICN OATE PAGE CFSES QI-QP-11.0-6 5

.JUN 4 1982 1 of 4 i

PREPARED BY:

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/ E2 INSPECTION OF GROUTING

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APPROVED BY:

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' 1. 0 REFERENCES h

1-A 2323-SS-9, " Concrete" g

1-B CP-QP-18.0, " Inspection Report" l

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'": HISTORICAL FILE This inspection outlines the methods and criteria used to verify

/O that the placement of grout conforms to Reference 1-A.

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This instruction applies to the grout.ing of base plates, bearing 1

plates, loose lintels, equipment bases, anchor bolt pockets and other items noted on the design drawings except those which are l

pressure grouted using a commercial epoxy grout.

I Dry packing of base plates shall be on a monitoring basis as i

directed by the QC Supervisor or his designee.

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!'3.0 INSTRUCTION

!3.1 INSPECTION CRITERIA 3.1.1 Preplacement Inspection The following attributes shall be verified to the extent possible, prior to grout placement:

Base and bearing plates are set to proper grade, leveled l

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supported and aligned.

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l INSTRUCTION ISSUE RWISION PAGE NUMBER DATE TEXAS UTILITIES GENERATING CO.

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QI-QP-11.0-6 5

,JUN 4 1982 2 of 4 i

b.

Wedges and shims are cut off flush with plates.

Oil, grease, dirt, loose concrete and laitance removed from c.

concrete surface to receive grout.

I d.

Oil, grease, rust and mill scale removed from underside of item being set in grout.

Concrete surfaces kept wet for six hours minimum prior to e.

placement of general purpose grout. Where comercial grout is used, pre-wetting of surfaces shall be as per the manu-facturer's written instructions.

f.

Grout card sign-off completed by crafts and engineers, g.

Forms securely anchored and of sufficient height.

h.

Where necessary, vent holes cut with approval from the engineer.

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Area to be grouted is vibration free.

j.

Correct method of grouting selected for the particular appli-i cation.

k.

Temperature of general purpose grout and surfaces to receive grout is 50 to 90 degrees F.

Where comercial grout is used, temperature shall meet manufacturer's written instruc-tions.

3.1.2 Placement Inspection The placement of grout shall be witnessed and inspected for the following attributes:

The proportion of materials, temperature of water and mixing a.

time are in accordance with Reference 1-A or approved grout manufactuer's instructions, b.

Grout tamped, rodded, strapped or spaded for proper consoli-dation.

c.

Vibration from nearby equipment avoided.

d.

Grout placed continuously and contact with bottom of base plate maintained.

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CPSES QI-QP-11.0-6 5

JUN 4 E, 3 of 4 l

i 3.1.3 Post-Placement Inspection The QC Inspector shall verify the following post-placement require-ments:

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Curing of non-shrink grout shall be in accordance with the a.

manufacturer's instructions, b.

All purpose grout shall be fully wet cured for at least seven days and maintained at a temperature of 50 to 90 degrees F.

In extreme hot or cold weather conditions, Engineering may c.

specify special instructions for curing.

3.2 00CtMENTATION Inspections shall be documented on an Inspection Report per Refer-ence 1-B.

Inspections of _ dry packing shall be documented on an Inspection Report per Attachment 1.

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INSTRUCTION ISSUE REVISION NUMBER DATE PAGE O

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QI-QP-11.0-6 5

JUN 4 1982 l4 of 4 ATTACHMEf;T 1 COWANCHE MAK STEAM ELECTRIC STATION sr>m w

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,((,y,g INSPECTION ATTA!8UTES 1.

! Area to receive grout is clean and free of oil. dirt.

I I crease. esint and mill scale.

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I Welderete erecerly acclied.

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Iwintue* is in accordance with section 5.3.1 of CCP-16.

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I Gmut is thorouchly tamped and care is taken to l

l thorouchly fill space without voids or cavities and l

l mene* is aca1est entire underside area of plate.

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l cuane enamound is emoe-ly acolied.

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