CleaverBrooks FLE - Chapter 2; Preparation for Assembly

Model FLE Assembly Pressure Vessel Assembly
750-192 2-1
CHAPTER 2
Pressure Vessel Assembly
1. Preparation for Assembly . . . . . . . . . . . . . 2-1
2. Position the Base . . . . . . . . . . . . . . . . . . . 2-3
3. Level the Base . . . . . . . . . . . . . . . . . . . . . 2-3
4. Positioning the Lower Drum on the Base . . . 2-3
5. Upper Drum Placement . . . . . . . . . . . . . . 2-4
6. Check All Drum Holes and Studs . . . . . . . . 2-4
7. Tube Installation . . . . . . . . . . . . . . . . . . . 2-6
8. Ferrule Retainers . . . . . . . . . . . . . . . . . . 2-14
9. Pass Seals . . . . . . . . . . . . . . . . . . . . . . . . 2-5
10. Installation of Pressure Vessel to Base . . 2-16
11. Pressurized Leak Test . . . . . . . . . . . . . . 2-16
1. Preparation for Assembly
The Model FLE boiler uses eleven separate tube
patterns that provide the gas passages for the five
pass gas-flow configuration. One member of the
assembly team should be designated to assure that
the proper tube is selected for each tube position.
Before beginning assembly of the pressure vessel
the required component parts should be brought to
the work area and organized. The time required to
assemble the pressure vessel will be affected by the
ease with which the correct part can be located, and
by the proximity of the parts storage to the work
area.
All joined fittings, whether they are driven ferrules or
bolted flanges, should be inspected for any shipping
damage prior to assembly. The surfaces of the tube
holes in the drum and tube ferrule must be free of
dirt, protective coatings, corrosion, or physical
damage. Care must be taken in handling boiler
tubes during assembly to prevent damage to the
ferrules.
Slight damage to the drum tube holes or to the tube
ferrules (such as scratches or light surface corrosion)
should be repaired with fine (150 grit or finer)
emery cloth. Pressure vessel components with
significant damage (corrosion pitting of sealing
surfaces, bent or dented tubes, etc) should be
replaced.
CAUTION
Drum tube holes may have sharp edges from
the machining processes. In order to prevent
cuts or serious personal injury, gloves should
be worn when cleaning.
The ferrule joint must be clean and free of oil and
debris in order to protect the lubricating and sealing
properties of the ferrule joint and sealant.
WA RN I NG
If overhead lifting points are used to suspend
or move the boiler components during
assembly, care must be taken to ensure that
the lifting points and the lifting devices are
adequate to support the weight of the
components being lifted. Failure to follow this
warning may result in serious personal injury
or death.