C 4, SB 740-97-38
Classification
Item
Defect
Major
Minor
A
B
Stage III corrosion; cracked or broken ..................................................
x
Stage II corrosion
.............................................................................................................
x
HEATER:
Valves
Stage IV corrosion on interior surfaces; hand-wheels broken; stems
bent or frozen; leaks; deteriorated packing and/or gaskets ..............................................................................
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Stage II corrosion on interior surfaces .............................................................................................................
x
Piping and fittings
Stage IV corrosion on interior surfaces; leaks, breaks, bends or
damaged threads
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Hot fluid strainers
Stage IV corkosion on interior surfaces; strainer basket
punctured, torn or distorted; leaks
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Stage II corrosion on interior surfaces .............................................................................................................
x
Safety controls:
High temperature control
Stage IV corrosion on terminals and connections; broken or inoperative
x
Stage III corrosion on terminals and connections ..............................................................................................
x
Stage II corrosion on terminals and connections ...............................................................................................
.
x
Hot oil pressuretrol
Stage IV corrosion on terminals and connections; broken or inoperative
x
Stage III corrosion on terminals and connections ..............................................................................................
x
Stage II corrosion on terminals and connections ...............................................................................................
.
x
Low fluid level cutoff
Stage IV corrosion on interior surfaces; float cracked, punctured or
distorted; deteriorated gasket; broken or inoperative........................................................................................
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Stage II corrosion on interior surfaces .............................................................................................................
x
Liquid level sight gage
Glass discolored, cracked or broken .....................................................
x
Circulating pump and
electric motor:
Pump:
Housing
Stage IV corrosion on interior surfaces; bent, broken or distorted;
deteriorated packing
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Stage II corrosion on interior surfaces .............................................................................................................
x
Stage IV corrosion....................................................................................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Motors:
Stage IV corrosion....................................................................................
x
and rotor
Stage III corrosion ....................................................................................
x
Stage II corrosion
.............................................................................................................
x
Wiring
Frayed or cracked insulation; broken strands; fungus growth ..........
x
Impeller fan and fins
Stage IV corrosion; bent, cracked or broken ........................................
x
Stage III corrosion
............................................................................................................. x
Burner:
Nozzles
Fuel residue or other foreign matter in openings.................................
x
Electrodes
Stage IV corrosion; bent or broken ........................................................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Glass broken or discolored ....................................................................
x
Blast tubes and
retention ring
Stage IV corrosion; bent, cracked or broken ........................................
x
Stage III corrosion
............................................................................................................. x
Air damper cylinder,
Stage IV corrosion; bent, cracked or broken; frozen or inoperative ..
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Blower assembly:
Housing
Stage IV corrosion on interior surfaces; bent, broken or distorted;
flame sight glass discolored, cracked, or broken ...............................................................................................
x
Stage III corrosion on interior surfaces .............................................................................................................
x
Stage II corrosion on interior surfaces .............................................................................................................
.
x
Blower wheel
Stage IV corrosion; blades bent, distorted or broken ..........................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
III-W-2