ML20137G901

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Rev 2 to Procedure QI-QP-11.0-6, Insp of Grouting
ML20137G901
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/05/1979
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-6, NUDOCS 8512020276
Download: ML20137G901 (4)
v • d • e


Text

IN3 TEXAS LKILITIES GENE

.~4NG CO.

REVISluN E

N R

PAGE CPSES QI-QP-11.0-6 2

7-5-79 1 og 4 INSPECTION OF CROUTING PREPARED BY:

7M! N N

7/f/7f DATE APPROVED BY:

7[.5["79 x

V DATE

1.0 REFERENCES

1-A Specification 2323-SS-9, " Concrete" 2.0 CENERAL 0

LMf0R M il0H DHlY 2.1 PURPOSE To outline the methods used by QC Inspectors for verification that the placement of grout conforms to Rger;:npe 1-A.

InspectiotMMirctathg b se p1btes, 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.

Concretesurfaceskeptvetforsixhoursminimumpriortol c.

grout placement, or longer if recommended by commerical grout manufacturer.

d.*

Grout card sign-off completed by crafts and Engineers.

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2 of 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 detailed or approved by the Engineer.

i. Verify correct tool and material availability'at'. placing,

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area.

j. Correct method of grouting selected for the particular application.

k.

Fem.ork, baseplate, and the area that will rective grout-must be raised to a minimum tarperature of 500, before F

grouting can begin.

3.1.2 Grout Placer.ent Inspection Tne QC Inspector shall verify the follcrering grout placez:ent

'A requirements:

The temperature of mixing water cannot exceed 80%' for a.

Paster Builders-713/636 or 950F for Gifford-Hill Suprer.e.

b.

Proportion of materials in accordance with specifications, or approved grout manufacturer's instructions.

Mixing time in accordance with specifications or ma:n-c.

facturer's instructions.

d.

Grout taped, rodded, strapped or spaded for proper consolidation.

Grout tenperature will be maintained between 50 and 80 F.

e.

i f.

Vibration transmitted frcm nearby equipr.ent avoided.

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g.

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

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7 Ift%nJCII0ti REVISI[

relAS UTILITIES GENEPe JG CO.

IGBER PAGE CPSES QI-QP-11.0-6 2

7-5-79 3 of 4 3.1.3

_ Post-Placement Inspection The QC Inspector shall verify the following post-placemenc requirements:

Surfaces of grout shall be protected from premature drying.

a.

b.

Forms shall not be left in place.

Curing will be maintained for at least 7 days, c.

d.

Grout protected from mechanical damage.

In hot weather conditions, area shall be wet continuously e.

and exposed metal forms wetted until remaval.

f.

Cold weather conditions require surface temperature to be maintained between 500F and 70 F when ambient temperature is below 400F.

Temperature immediately adjacent to the grout does not g.

change more than 50F 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 />.

0 3.2 DOCUMENTATION The QC Inspector shall verify on the Inspection Report (Fig.1) that the inspection requirements of this instruction have been met and upon completion submitted to the Civil Inspection Supervisor /

designee for review, processing and filing according to the requirements for "QA Records".

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