Kistler-Morse KM L-Cell Bolt-On - Manual (Page 45)

Chapter 5. L-Cell Installation on Skirt-Supported Vessels
5-8
be relocated to match the inside location and remark the outside
location.
4. Continuing to move clockwise around the inside of the skirt, repeat
Step 3, marking mounting locations on panels 4, 6, etc.
5. Mark junction box locations on the inside of the skirt, centered
between the L-Cell sets. Each junction box can be wired to a maximum
of two L-Cell sets (four L-Cells total). Vertically, locate junction boxes
approximately 6’ (1.8m) above the foundation. This minimizes the
possibility of interference with L-Cells in the event the L-Cells cannot
be placed in the ideal locations. Ensure you have sufficient cable
length and that a drip loop will be formed by the L-Cell cables when
wired to the junction box.
Mark Locations (Welded, Skirt-Supported Vessels)
1. Refer to the Application Data Form for the L-Cell spacing. L-Cells are
located symmetrically around the vessel.
Beginning on the outside of the skirt at the door centerline, measure
clockwise
1 / 2 the spacing distance. Mark the preliminary location of
the first L-Cell:
• Vertically, locate the L-Cell at the panel mid-height (typically 3’ to
4’ [0.9 to 1.2m] above the foundation).
• Minor obstructions — Move the L-Cell so it is not within 2’ (0.6m)
of a minor obstruction. Vertically, center the L-Cell within the
effective panel height.
• Major obstructions — Move the L-Cell so it is not within 4’ (1.2m)
of a major obstruction.
Figure 5-11. Mounting L-Cells on Second Tier
First
Tier
Second
Tier
Must have
enough room to
work inside
6’ (1.8m) Minimum
Height between
Seam Welds or
Bolt Lines
Center L-Cells
Vertically between
Seam Welds or
Bolt Lines
Many Obstructions
in First Tier
Cone
3. Proceed to the inside of the skirt and walk clockwise to panel 2. Mark
the preliminary L-Cell location to match the marked location on the
outside of the skirt:
• If you adjusted the outside location because of an obstruction,
maintain offset configuration of the set (i.e., if you move the
outside L-Cell in the set from its ideal location, move the inside L-
Cell as well).
• If there is an obstruction on the inside, follow the guidelines in
Step 1 for relocating the L-Cell. Verify the L-Cell on the outside can
Figure 5-10. Modifying L-Cell Vertical
Locations because of Minor Obstructions
Near Panel Edge
Note: Minimum effective panel height is 6’ (1.8m).
If effective height is less than 6’ (1.8m), relocate
L-Cell set to another location.
Modified Location to
Center L-Cells within
Effective Panel Height
(at this point only)
3.5’
(1.1m)
12
12
12
123
123
123
12
12
12
123
123
123
Effective
Panel
Height
7.0’ (2.1m)
2” to 4”
(51mm to 102mm) Diameter
Pneumatic Tubes through Panel
4.0’
(1.2m)
Panel
Height
8.0’
(2.4m)
‘Ideal’ Locations
L