Term
what are the limitations of implementing DCS technology
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1. repairs have been completed 2. insulation has been reinstalled 3. anchor points
and piping supports in place 4. safety valves and vents are in ready to run
operation 5. steam trap isolation valves are open - some drains to atmosphere
may be opened untill they are blowing dry steam.
1. hardware , software proprietary in nature and dont always work with
other vendors. may require specific vendor only. 2. cost can be very high
compared to panel mounted controls. 3. specialized training required for
operations.
1 . Conservation of matter - matter cannot be destroyed or created but can be
converted to other forms of matter. 2. Conservation of energy - energy cannot
be destroyed or created but can be converted to other forms of energy. 3.
General gas law - the volume of a gas is directly proportional to its absolute
temperature and inversely proportional to its absolute pressure. 4. Law of
, combining masses - all substances combine only in accordance with a definite
simple relationship as to relative masses based on their chemical composition.
1. Removal of suspended solids by filtration 2. Removal of dissolved solids by ion
exchange.
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2 of 104
Definition
Tank that is designed for a maximum pressure of 100 kpa. tank is
vented to atmosphere to prevent over pressurization. Heating coil in
the tank is used to heat the oil in the suction box to a minimum of
38°c
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bilge water tank belt weighing machine
thermal expansion feedwater
fuel oil storage tank
regulator
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, 3 of 104
Term
What are the 4 wastewater streams
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the rate at which microorganisms
consume oxygen in water at 20°C
1. Extractive 2. In-Situ
while decomposing organic waste
matter.
1. waste from floor drains 2.
blow down from cooling
1. attemperation 2. gas bypass 3. gas tower 3. waste frolic
recirculation 4. tilting burners demineralizers or reverse
osmosis systems 4. boiler
blowdown
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4 of 104
Term
PH
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3.0 to 4.0 4.5 to 5.5
, 9.0 to 11.0 6.5 to 8.5
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Term
Single element feedwater control
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Definition
Two most common types of pulverizers are the ball-race mill and the
ring-roll mill. Coal is ground fine enough to allow air through the mill
to carry it to burners
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