Boiler
Steam
Piping
The steam piping system is an essential part of steam power plant. The piping steam used for carrying the steam must fulfill the following requirements:
1.
The
piping
adopted
must
ensure
maximum
reliability.
2.
It
should
be
possible
to
carry
out
inspection
and
maintenance
on
any
section
of
the
plant
without
the
need
for
complete
shut
down
3.
The
piping
should
be
of
necessary
size
to
carry
the
required
flow
of
fluids
4.
The
pipes
carrying
the
fluids
at
high
temperature
should
be
able
to
withstand
the
temperature
and
expansion
caused
due
to
the
temperature
changes.
5.
The
piping
supports,
anchors,
and
joints
should
be
in
accessible
positions
so
that
inspection
is
possible
throughout
the
life
of
the
plant.
6.
The
piping
system
must
withstand
the
pressure
to
which
it
is
subjected.
7.
The
pipe
should
run
as
direct
and
straight
as
possible.
The
number
of
fittings
and
bends
required
to
make
the
necessary
connections
should
be
as
minimum
as
possible
to
reduce
the
pressure
loss.
This
is
also
desirable
for
easy
inspection
and
maintenance.
8.
Valves
and
interconnecting
pipes
should
be
as
few
as
possible,
but
the
necessity
for
sectionalising
and
load
transfer
in
times
of
emergency,
inspection
or
maintenance
should
not
be
overlooked
9.
Consideration
should
be
given
to
the
efficient
drainage
of
all
pipes
although
the
number
of
drainage
points
should
be
as
few
as
possible
consistent
with
safety
10.The
pipes
should
be
made
in
the
longest
possible
lengths
to
reduce
the
number
of
joints
11.
Template
pipes
should
be
as
few
as
possible,
to
reduce
erection
time.
12.
The
piping
system,
used
for
steam,
should
be
installed
in
Such
a
way
that
the
horizontal
runs
should
slope
in
the
direction
of
steam
flow.
The
steam
traps
along
the
piping
should
be
provided
to
drain
the
line
and
to
prevent
an
accumulation
of
water
during
steam
flow.
With
advancing
temperature
and
pressures
and
with
the
increasing
complexity
of
the
central
station
cycle
in
modern
power
plants,
the
cost
of
piping
system
has
become
one
of
the
major
items
of
expense and its selection and arrangement has also become one of the major items of design
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