Page 156 - Machinery Component Maintenance

Machinery Foundations and Grouting 139

5. AFTER THE FOUNDATION HAS BEEN CHIPPED AND CLEANED,
IT SHALL BE COVERED SO AS TO PREVENT IT FROM
BECOMING WET.
6. FOUNDATION BOLTS SHALL BE WAXED OR COVERED WITH DUCT
SEAL OVER THEIR ENTIRE EXPOSED LENGTH. IF THE BOLTS
ARE SLEEVED, THE SLEEVES SHALL BE PACKED WITH NON-
BONDING MATERIAL TO PREVENT THE ANNULAR SPACE AROUND
THE BOLT FROM BEING FILLED WITH GROUT.

IV. PREPARATION OF BASEPLATE
1. SURFACES OF THE BASEPLATE WHICH WILL COME IN CONTACT
WITH THE EPOXY GROUT SHALL BE CLEAN AND FREE OF ALL
OIL. RUST. SCALE. PAINT AND DIRT. THIS CLEANING SHALL
BE DONE IMMEDIATELY PRIOR TO THE LEVELING OF THE BASE-
PLATE AND PLACEMENT OF THE EPOXY GROUT.
2. IF THE GROUTING IS TO BE DELAYED BY MORE THAN EIGHT
(8) HOURS AFTER THE BASEPLATE IS CLEANED, THE CLEANED
BASEPLATE SHALL BE PAINTED WITH ONE COAT OF UNFILLED
ESCOWELD 7505 TO GIVE A DRY FILM THICKNESS OF THREE
(3) MILS. THIS COAT SHALL BE FULLY DRIED PRIOR TO
PLACEMENT OF GROUT.
3. IF THE EPOXY COATED BASEPLATE IS NOT GROUTED WITHIN
THIRTY (30) DAYS AFTER BEING PAINTED, THE EPOXYED
SURFACE SHALL BE ROUGHED UP WITH A WIRE BRUSH TO
REMOVE THE BLOOM OR SHINE. ALL DUST PRODUCED BY
BRUSHING SHALL BE WIPED OFF USING A WATER DAMPENED
RAG. THESE SURFACES SHALL BE AIR DRIED PRIOR TO
PLACEMENT OF GROUT.
V. FORMING
1. ALL FORMING MATERIAL COMING INTO CONTACT WITH THE
GROUT SHALL BE COATED WITH COLORED PASTE WAX. THE
COLORING TO CONTRPST WITH THE FORMING MATERIALS
COLORS I
2. FORMS SHALL BE MADE LIQUID TIGHT TO PREVENT LEAKING
OF GROUT MATERIAL. CRACKS AND OPENINGS SHALL BE
SEALED OFF WITH RAGS, COTTON BATTING, FOAM RUBBER OR
CAULKING COMPOUND.
3. CARE SHOULD BE TAKEN TO PREVENT ANY WAX FROM CONTACT-
ING THE CONCRETE FOUNDATION OR THE BASEPLATE.
4. ANY LEVELING WEDGES THAT ARE TO BE REMOVED AFTER THE
GROUT HAS CURED SHALL BE COATED WITH WAX. WEDGES
AND/OR SHIMS WHICH ARE TO REMAIN EMBEDDED IN THE
GROUT SHALL NOT BE COATED.
5. LEVELING SCREWS, IF USED. SHALL BE COATED WITH WAX.
VI. MIXING
1. AS EPOXY COMPOUNDS HAVE LIMITED POT LIFE AFTER MIX-
ING, BOTH THE ELAPSED TIME FROM BEGINNING OF MIXING
TO THE COMPLETION OF THE POUR AND THE AMBIENT TEMP-
ERATURES AT THE BEGINNING OF MIXING AND AT THE
COMPLETION OF POUR SHALL BE RECORDED AND GIVEN TO THE
TURBOMACHINERY ENGINEER WHO WILL RECORD THE DATA IN
THE PERMANENT EQUIPMENT RECORDS.