3.696.5275.210
31
Heat Exchanger Coil and Gaskets - Inspection and Replacement
The U-Bend heat exchanger coil is the heart of CSM-C Compact Steam Generators.
It (they) should be removed and inspected every two (2) years, dependant upon insurance
requirements.
There are two (2) gaskets, one (1) between the tube face of the coil and the flange welded
to the tank, and one (1) gasket with a divider to fit between the head and the tubesheet.
∆
Clean steam and energy source steam present situations that can be very
dangerous because of the high temperatures and pressures. To avoid possible injury
or death and follow all accepted and recommended procedures when performing
installation, operation, and maintenance procedures.
∆
The combination of electricity, steam, and water can pose a very dangerous
situation. Turn off / disconnect all electric power before attempting any maintenance
procedures.
1. Follow the shutdown procedure (page 22) to take the unit off-line before attempting to
remove and inspect the heat exchanger coil.
2. Ensure that the primary supply, condensate / water return line, feed water inlet, and
clean steam outlet have been shut off; that the pressure has been relieved from both
the clean steam and energy source systems; that the feedtank has been completely
drained; and that the steam, water, all components, and surfaces have cooled.
3. Carefully break the connections between the heat exchanger coil head and the energy
source inlet and outlet lines.
- It may be necessary to break the lines at a second location, and for the lines to be
rotated to allow clearance for the heat exchanger coil to be removed from the tank.
- If it is necessary, care should be taken to ensure that in-line components are not
damaged.
4. Remove the bolts and nuts that secure the heat exchanger coil head to the tank, and
remove all bolts from the unit.
5. Carefully separate the heat exchanger coil head from the mounting flange and remove
the coil assembly from the tank.
Fig. 17
Summary of Contents for CSM-C
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