k.
Bunker - LOW LEVEL
(red)
l.
Screw conveyor no. 1 - ON
(green)
m. Screw conveyor no. 2 - ON
(green)
[n. Stoker surge hopper no. 1 inlet valve - OPEN
(green)]
[o.
Stoker surge hopper no. 2 inlet valve - OPEN
(green)]
p.
Emergency discharge chute - OPEN
(green)
q.
Stoker surge hopper - HIGH LEVEL
(one required for each hopper)
r.
Stoker surge hopper - LOW LEVEL
(one required for each hopper)
s.
Stoker surge hopper - LOW LOW LEVEL
(one required for each hopper)
[t.
Coal scale - ON
(green)]
2.9.19.2
Switches and Pushbuttons
Provide momentary contact pushbuttons or selector switches for the
following:
a. System- START (3 required)
Rail unloading hopper to storage yard
Reclaim hopper to boiler plant
Bunker to boiler plant
b.
System - STOP (red head)
c.
Rail unloading hopper surfactant spray - START/STOP
d.
Reclaim hopper surfactant spray - START/STOP
e.
Alarm - ACKNOWLEDGE
2.9.19.3
Annunciator Panel
Annunciator panel shall include the following:
a.
Bunker - HIGH LEVEL
b.
Bunker - LOW LEVEL
c.
Stoker surge hopper (one required for each hopper) - HIGH LEVEL
d.
Stoker surge hopper (one required for each hopper) - LOW LEVEL
e.
Stoker surge hopper (one required for each hopper) - LOW LOW LEVEL
f.
EMERGENCY SHUTDOWN (Auxiliary contacts for remote alarm)
g.
Blank (3 required)
2.9.19.4
Panel Size
Size panel to accommodate future addition of one stoker surge hopper and
SECTION 15502N
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