ML20137G411

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Rev 0 to Procedure QI-QP-11.0-6, Insp of Grouting
ML20137G411
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/12/1978
From: James Smith
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-6, NUDOCS 8512020188
Download: ML20137G411 (4)
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INSPECTION PREPARED BY:

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DATE GROLTING

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APPROVED BY:

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1.0 REFERENCES

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1-A Specif ica tion 2323-SS-9, " Concrete" g,

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2.0 CENERAL 2.1 PURPOSE To outline the methods used by QC Inspect y'r rification that the placement of grout t Q fere

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2.2 SCOPE Inspection of grouting base plates, bearing plates and equipment bases.

3.0 INSTRUCTION 3.1 INSPECTION REQUIREMENTS 3.1.1 Preplacement Inspection The QC Inspector shall verify the following requirements:

a.

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

b.

Oil, grease, dirt and other coatings removed from under-side of base plate and bolts prior to placement of base plate.

Concrete surfaces kept wet for two hours minimum prior to c.

grout placement, or longer if reconsnended by commercial grout manufacturer.

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Grout card sign-off completed by crafts and Engineers.

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i TEXAS UTILITIES GENERATING CO.

INS M M ISSUE REVISION PAGE NLPBER DATE l

CPSES QI-QP-11.0-6 0

7-12-78 2 of 4 4

Forms shall be securely anchored.

e.

f.

Forms adequately caulked to avoid grout leakage.

g.

Forms strong enough to withstand grout pressure head.

h.

Vent holes to avoid air pockets shall be provided as de-tailed or approved by the Engineer.

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i. Verify correct tool and material availability at placing area.

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Correct method of grouting selected for the particular application.

t 3.1.2 Crout Placement Inspection The QC Inspector shall verify the following grout placement requirements:

Proportion of materials in accordance with specifications a.

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or approved grout manufacturer's instructions.

b.

Mixing time in accordance with specifications or manu-facturer's instructions.

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c.

Grout tamped, rodded, strapped or spaded for proper conso-j lidation.

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Grout temperature maintained between 500 and 90.

0 Vibration transmitted from nearby equipment avoided.

e.

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Grout placed continuously and contact with bottom of base plate maintained by head or other pressure.

j 3.1.3 Post-Placement Inspection

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The QC Inspector shall verify the following post-placement require-ments:

Surfaces of grout shall be protected from premature drying.

a.

b.

Forms shall not be left in place.

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TEXAS UTILITIES GENERATING CO.

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NINBER DATE CPSES QI-QP-11. 0-6 0

7-12-78 3 of 4 1

c.

Grout protected from mechanical damage, d.

Ir. hot weather conditions, area shall be wet continuously and exposed metal forms wetted until removal.

Cold weather conditions require surface temperature to be e.

maintained between 50 F and 700F when ambient temperature is below 400F.

f.

Temperature immediately adjacent to the grout does not change 0

more than 5 F an hour or 50 F in any 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3.2 LOCUMENTATION The QC Inspector shall verify on the Inspection Report (Figure 1) that the inspection requirements of this instruction have been met and submit it to the QC Documentation Supervisor, i

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INS TIM ISSUE TEXAS UTILITIES GENERATING CO.

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