ML20137H032

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Rev 3 to Procedure QI-QP-11.0-6, Insp of Grouting
ML20137H032
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 10/28/1980
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-6, NUDOCS 8512020304
Download: ML20137H032 (3)
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Text

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i INSTRUCTION ISSUE

TEkAS UTILITIES GENERATING CO.

NUMBER REVISION DATE PAGE l

CPSES OI-0P-11. 0-6 3

10/28/80 1 of 3 PREPARED BY: p

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INSPECTION OF GROUTING l

APPROVED BY:

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1.0 REFERENCES

l-A 2323-SS-9, " Concrete" nic O 6 E a

1-B CP-0P-18.0, " Inspection R l

FOR INFORMAT DH ONLY j

2.1 PURPOSE This inspection outlines the methods and criteria used to verify that the placement of grout confoms to Reference 1-A.

M, 2.2 SCOPE 1

This instruction applies to the grouting of base plates, bearing plates, loose lintels, equipment bases, anchor bolt pockets and other itens noted on the design drawings except those which are pressure grouted using a commercial epoxy grout.

3.0 INSTRUCTION 3.1 INSPECTION CRITERIA l

3.1.1 Preolacement Insoection The following attributes shall be verified to the extent possible.

l prior to grout placement.

A.

Oil, grease, dirt, loose concrete and laitance renoved from concrete surface to receive grout.

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8.

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

C.

Concrete surfaces kept wet for six hours minimum prior to placement of general purpose grout. Where comercial grout is used, pre-wetting of surfaces shall be as per the manu-

{g facturer's written instructions.

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D.

Grout card sign-off completed by crafts and engineers.

I E.

Fams securely anchored and of sufficient height.

F.

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

G.

Area to be grouted is vibration free.

H.

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

I.

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 Insp_ection The placement of grout shall be witnessed and inspected for the following attributes:

A.

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

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

A.

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

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C.

In extreme hot or cold weather conditions, Engineering nay specify special instructions for curing.

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l CPSES 01-0P-11.0-6 3

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3.2 DOCUMENTATION f

Inspections shall be documented on an Inspection Report per Refer-ence 1-8.

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