TM 5-810-15
Table 8-1. Piping Design Notes,
Typical Design
System
Origin
Termination
Press. & Temp.
Design Notes
Main steam
Boiler outlet
Process
400 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
(Saturated)
450 degrees F
tion required. Traps and drains required. Insulate for
thermal efficiency.
Main steam
Boiler outlet
Process
400 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
(superheated)
750 degrees F
tion required. Traps and drains required. Insulate for
thermal efficiency.
Auxiliary
Pressure reduc-
Deaerator. feed-
150 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
(low pressure)
ing station
water heaters
375 degrees F
tion required. Traps and drains required. Insulate for
steam
steam coils BFP
thermal efficiency.
turbine soot-
blowers
Steam coil
Auxiliary steam
Steam coil inlet
150 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
steam supply
header
375 degrees F
tion required. Insulate for thermal efficiency. Traps and
drains required.
Building heat
Auxiliary steam
Building heating
150 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
system (reducing
equipment
375 degrees F
tion required. Traps and drains required. Insulate for
station)
thermal efficiency.
Boiler feed pump
Boiler feed pump
Boiler economizer 450 psig
Check valve required on each pump. Insulate for ther-
discharge
230 degrees F
mal efficiency.
Boiler feed pump
Deaerator stor-
Boiler feed pump
5 psig
Strainer required on each pump. Insulate for thermal
suction
age tank
225 degrees F
efficiency.
Boiler feed pump
Boiler feed pump
Deaerator
450 psig
Breakdown orifice required for each pump. Insulate for
recirculation
discharge
230 degrees F
thermal efficiency.
Main steam desu-
Boiler feed pump
Main steam desu-
450 psig
Insulate for thermal efficiency.
perheater
discharge
perheater
230 degrees F
Sootblower steam
Auxiliary steam
Sootblowers
150 psig
Slope pipe " per 100 ft. Thermal expansion compensa-
system (reducing
375 degrees F
tion required. Traps and drains required. Insulate for
station)
thermal efficiency.
Boiler continuous
Boiler drum
Flash tank
400 psig
Compensation for thermal expansion and boiler move-
blowdown
450 degrees F
ment required. Insulate for thermal efficiency.
Instrument air
Instrument air
Instrument sir
100 psig
No insulation required.
piping system
100 degrees F
Plant air
Plant air com-
Plant air piping
100 psig
No insulation required.
pressors
system
100 degrees F
Atomizing air
Plant air system
Ignitors
100 psig
No insulation required.
100 degrees F
Boiler drains and
Boiler drum mud
Atmosphere,
400 psig
Compensation for boiler movement required. Insulate
vents
drum, waterwall
drain
450 degrees F
for burn protection.
headers
Steam coil drain
Steam coil outlet
Deaerator (drain) 10 psig
Insulate for thermal efficiency.
& vent
atmosphere (vent) 240 degrees F
Deaerator vents
Deaerator
Atmosphere
5 psig
Insulate for burn protection.
220 degrees F
Safety valve vents
Safety valve out-
Atmosphere
As required
Use drip pan elbows on steam safety valves. Avoid
lets
bends or turns.
Condensate
Condensate
Deaerator
10 psig
Check valve required on each pump. Insulate for ther-
makeup pump
makeup pump
100 degrees F
mal efficiency.
discharge
Condensate
Condensate stor-
Condensate
5 psig
Strainer required on each pump. Insulate for thermal
makeup pump
age tank
makeup pump
100 degrees F
efficiency.
suction
8-2
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