- Adequate insulation is very improtant. Burning fuel unnecessarily because the insulation isn't maintained is not a wise practice.
- Whenever insulation is removed for maintenance or repair, make certain it's put back or replaced. Or, it will waste of energy, it's hazardous because you could be severaly burned.
- If the insulation get wet, dry it.
- Damaged or compressed insulation should be replaced as part of the annual clean up operation. Where the damage is repeated, take consideration to install better protection of the insulation.
- Ruled of thumb -> re-evaluate your insualtion if you can't hold your hand on it.
- Don't add insulation at any part of a boiler casing.
- The cost to replace the insulation is much low than the energy loss using poor or damage insualtion.
Refractory
- Refractory material may exposed to high temperature of a furnace, subject to very caustic or acidic. Some components of fuels produce vanadium, particularly offensive. Breaking off of a layer of the refractory from one quarter to two inches thick, a process call spalling.
- Refractory does expand and contract with changes in temperature.
- Some of boiler operator repairing every crack that appears, as a result, accelerate the damage.
- Rules; any crack that is smaller 2 pensil, where you ca't put a sharpened pencil in up to the yellow paint, sholud be left alone. That expansion cracks will close up as the boiler heats up.
- Pluggin larger cracks as much as three quarters of an inch, with hard refractory materials isn't recommended. Use ceramics fibres rated at temperatures as high as 3200 degree F that should used to fill those cracks.
- Castable -> is a powder that's mixed with water to form a very dense soupy mixture that can be poured into spaces surrounded by forms.
Packing
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