J Line Pump
Horizontal Double Suction Centrifugal Pump – API 610 Process Pump
20 V1.032818
4.2 LEVELING BASEPLATE
NOTE: The information included in this section is intended as a general guideline. For further
information refer to the corresponding section in API Recommended Practices 686.
Before leveling the unit onto the foundation, the following preparations must be made:
1. Chip away all damaged concrete with a hammer and chisel, eliminating about one inch of the
surface of the foundation. After surface chipping is done, the foundation shall be thoroughly
cleaned free of debris. Clean the anchor holes.
2. Check that the placement and dimensions of the foundation and the anchor holes
correspond to the assembly plan.
The foundation must be kept free of all contamination after it has been prepared for grouting.
To continue with the leveling procedure:
1. Remove the pump and driver from the base to facilitate the leveling procedure. This will
facilitate the next steps and prevent distortion of the baseplate.
2. Remove baseplate from wooden skid.
3. Attach lifting rig hooks to lifting holes of baseplate as described in SECTION 3.3-TRANSPORT.
4. Guide baseplate to position above foundation bolts and lower baseplate into position over
foundation bolts; be sure to respect the above-mentioned clearance between concrete and
baseplate.
There should be a minimum annular clearance of 1/8 inch (3 mm) between anchor
bolt holes and the anchor bolts to allow for field alignments.
Exercise proper caution when working under or around suspended objects.
5. Using a precision level across baseplate pads, adjust jacking bolts as necessary to ensure that
the baseplate is level in all directions (see next figure), within 0.002 in/ft (0.2 mm/m).
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