CHAPI'ER2
THE
PRESSURE VESSEL
CHAPTER2
THE
PRESSURE VESSEL
A. General
B.
Construction
C. Water Requirements
1. Hot water boiler
2 Steam boiler
D. Water Treatment
E. Cleaning
F. Boil-out
of
a
New
Unit
G.
Washing out
1.
Hot Water Boiler
2 Steam Boiler
H.
I.
1.
Slowdown
-Steam
Boiler
1.
Types
of
Slowdown
Periodic Inspection
Preparation for Extended Lay-up
A.
GENERAL
This chapter is devoted primarily to the waterside
care
of
the pressure vessel.
The type
of
service that your boiler is required
to
provide has an important bearing
in
the amount
of
waterside care it will
requir~
..
Although it
is
of
prime importance, the subject
of
water supply and treatment cannot adequately
be covered in this manual. For specific
informa-
tion
or
assistance with your water treatment re-
quirements, contact your Cleaver-Brooks service
and parts representative.
750-150
Feedwater equipment should
be
checked and
ready for use.
See
that all valves, piping, boiler
feed pumps, and receivers are installed in
accord-
ance with prevailing codes and practices.
Water requirements for both steam and hot water
boilers are essential
to boiler life and length
of
service. Constant attention
to
this area will pay
dividen~
in
the form
of
longer life, less down-
time, and prevention
of
costly repairs. Care taken
in
placing the pressure vessel into initial service
is
vital.
The
waterside
of
new boilers and new or
remodeled steam
or
hot water systems may con-
tain oil, grease
or
other foreign matter. A method
of
boiling out the vessel to remove these ac-
cumulations
is
described later in this chapter.
The operator should be familiar with this chapter
before attempting to place the unit into operation.
CHAPTER
2-1
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