Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 20)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 20
result. Often oil in boiler water will originate in the condensate. This contaminated
condensate should be directed to the sewer until the source of the oil is determined and
corrective steps taken.
h) Iron (oxides): Iron in any of its oxide or complex forms is undesirable in boiler water. Iron
in its various forms can originate in the raw water makeup, condensate return water, or
form directly in the boiler as a result of corrosion. It can concentrate in the boiler and it
tends to collect in stagnant areas. If a boiler is using raw water makeup, iron is almost
certain to be a major component of developing scale or create fouling.
i) Water Hardness: Water hardness is the measure of calcium and magnesium content as
calcium carbonate equivalents. Water hardness is a primary source of scale in boiler
equipment. Hardness is removed by softening.
j) Feedwater: Feedwater is the combination of fresh makeup and returning condensate that
is pumped to the boiler.
k) Condensate: Condensate is condensed steam that is normally low in dissolved solids.
Hence, it does not contribute to the dissolved solid content of the feedwater. In addition,
condensate is very expensive to waste. It's been chemically treated, heated, pumped,
converted to steam, and condensed. This costs money and when condensate is returned
to the boiler, money is saved.
Warning
Improper installation or maintenance of gauge glass and connections can cause
immediate or delayed breakage resulting in bodily injury and/or property damage.
l) It is critical that the SteamPac pH be alkaline (9-11) whenever water is in the SteamPac.
Solids that enter in with the water concentrate in the vessel. Daily boiler blowdown is
recommended to help prevent the formation of deposits. Consult instruction manual for
proper blowdown procedure.
m) The most common method of water softening is by base or ion exchange, and softeners
of this type are readily available from a number of manufacturers.
n) Periodically, the ion exchange resin bed requires regeneration by flushing through with a
brine solution followed by rising with fresh water.
o) The interval between regeneration is dependent upon the raw water hardness and flow
rate. Softeners can usually be set to initiate the regeneration cycle during periods when
the generator is off line. If this is not possible, it is essential either to install a duplex
softener arrangement or select a return tank of sufficient capacity to provide constant full
water supply during the regeneration period.
p) Peak flow rates should be taken into consideration when selecting a softener. The hourly
raw water throughput will depend on the system condensate return but can be taken at a