C4, SB 740-97-38
Classification
Item
Defect
Major
Minor
A
B
Stage III corrosionl on internal surfaces..............................................................
x
Stage II corrosion on internal surfaces................................................................
x
Micro valve
Stage IV corrosion on internal surfaces; stem bent
or broken; dial face deteriorated....................................................................x
Stage III corrosion on internal surfaces...............................................................
x
Stage II corrosion on internal surfaces................................................................
x
Fuel oil pump
Stage IV corrosion on internal surfaces; cracks
or breaks; deteriorated seals, gaskets, or
packing .........................................................................................................x
Stage III corrosion on internal surfaces...............................................................
x
Stage II corrosion on initernal surfaces...............................................................
x
Fuel oil filters
Stage IV corrosionI oi interior surfaces; filters
contaminated; deteriorated gaskets ..............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
Stage II corrosion on interior surfaces ................................................................
x
Fuel lines and piping
Kinked, cracked or broken; damaged threads.....................................................x
Valves
Stage IV corrosion on internal surfaces; handwheels
broken; stems bent or frozen ........................................................................x
Stage III corrosion on internal surfaces...............................................................
x
Stage II corrosion on internal surfaces................................................................
x
Fuel meter
Stage IV corrosion on internal surfaces; glass
broken; dial face deteriorated........................................................................x
Stage III corroson on internal surfaces ...............................................................
x
Stage II corrosion on internal surfaces................................................................
x
Burner steam lines and
valves.
Stage IV corrosion on interior surfaces; hand-
wheels broken; stenm bent or frozen ............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
Stage II corrosion on interior surfaces ................................................................
x
EXHAUST STACK
Stage IV corrosion on interior surfaces of exhaust
stack, steam piping and/or jets; bent, cracked,
or broken.......................................................................................................x
Stage III corrosion on interior surfaces of
exahust stack, steam piping, and;or jets.......................................................
x
Stage II corrosion on interior surfaces of exhaust
stack, steam piping, and/or jets ....................................................................
x
GEARS:
Exposed
Chipped. cracked, or broken; stage IV corrosion ................................................x
Stage, IIl corrosion ..............................................................................................
x
Stage II corrosion................................................................................................
x
Enclosed
deteriorated seals; leaks ...............................................................................x
lubricant contaminated..................................................................................
x
SPROCKETS, IDLERS AND OR
IDLER ROLLERS:
Distorted, cracked or broken; takeup and adjustment
frorzen; stage, IV corrosion...........................................................................x
Stage III corriosion ..............................................................................................
x
Stage II corriosion ...............................................................................................
x
DRIVE CHAINS:
Precision
Stage III corrosion; cracked or broken links ........................................................x
Stage II corrosion; pins and/or rollers frozen.......................................................
x
Nonprecision
Stage IV corrosion; cracked or broken links........................................................x
Stage III corrosion; pins and/or rollers frozen......................................................
x
Stage II corrosion................................................................................................
x
SHAFTS. BUSHINGS
BEARINGS AND/OR BEARING
Stage IV corrosion on critical surfaces of shafts,
HOUSINGS:
bushings, springs, bearings, and/or bearing
housings .......................................................................................................x
Stage III corrosion on critical surfaces of shafts,
bushings, springs, bearings, and/or bearing
housings .......................................................................................................
x
Stage II corrosion on critical surfaces of shafts,
bushings, springs, bearings, and/or bearing
housings .......................................................................................................
x
COLD-AGGREGATE ELEVATOR:
Buckets and bucket line
.....................................................................................................................x
chain
Stage IV corrosion; distorted, cracked, or broken ...............................................
III-BB-4
