FULTON VMP Series - Water Level Gauge (Sight Glass) Blowdown; Boiler Internal Inspection

VMP-IOMM-2018-2
Fulton Ltd
Page 50
MAINTENANCE - 5
5.5.3 WATER LEVEL GAUGE (SIGHT GLASS) BLOWDOWN
Blowdown the water level gauge (sight
glass) set 1.
1. Open the water level gauge glass
blowdown valve A
2. Close (for approx. 3 seconds) the
top gauge valve B
3. Open valve B
4. Close (for approx. 3 seconds) the
bottom gauge valve C
5. Open valve C
6. Close valve A
Repeat for gauge set 2
On completion of the blowdown
procedure ensure that all isolation
valves are OPEN and all blowdown
valves are CLOSED.
Note: Where a boiler is operating continuously at
steam pressure, advice should be taken from Fulton
Ltd as to the appropriate blowdown procedure.
WORKING
POSITION
STEAM
BLOWDOWN
WATER
BLOWDOWN
A
A
A
B
BB
C
C
C
Operating Positions
Figure. 26 - Water Level Gauge Operating Positions
5.6 BOILER INTERNAL INSPECTION
The lower hand hole doors should be
removed after one month of operation
and the interior of the boiler thoroughly
examined. If scale or sludge build-up is
observed, it should be removed and the
water treatment supplier advised.
Newgasketsmustbettedeverytime
a hand hole door is removed (see
Section 5.7 - Fitting New Gaskets To
Boiler Inspection Holes).
Subsequent interior examinations
should be carried out on a regular
basis until satisfactory conditions are
observed. Thereafter, inspections
should be carried out at three monthly
intervals.
Hand Hole Cover Plate
Gasket
Crab
Figure. 27 - Hand Hole