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 ELECTRICAL
Power Plants-Continued
Operating and Maintenance Records:
review for deficiencies in specific gravity levels
cell temperature
makeup water history
equalizing charge practices
sustained overcharges and discharges
Connections:
loose
corroded
dirty
inadequate
Cells:
oversulphated plates
physical erosion
internal shorts
buckled plates
cracked grids
dirty electrolyte
improper electrolyte level
excessive sedimentation
Chargers and Controls: poor physical condition
Instruments: inaccurate, (check frequency of calibration)
n Buses:
poor condition
dirty
structural distortion
loose joints and connections
evidence of overheating
7-41
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