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ELECTRICAL
7.2.18 Potheads: Comply with all current safety precautions. DO NOT TOUCH
when energized. Determine if preventive maintenance inspections are adequate. Check
for:
n Porcelain:
cracks
breaks
chips
checking of porcelain glaze
streaks of carbon deposits indicating flashovers and possible damage
dirt, dust, grease or other deposits
cracks, breaks, or deterioration of cement sealing compound
leakage
signs of moisture
n Cable Clamps:
corrosion
loose bolts, solder or GROUND CONNECTION
poor mechanical connections. (Corrosion of lead cables and
connections at potheads indicated by presence of a white, brownish,
or reddish product.)
n Terminal Studs and Bolting Pads:
corrosion
loose connections
poor contacts evidenced by discolorations from heating.
n Mountings:
corrosion
other weakness
7.2.19 Power Plants: Comply with all current safety precautions. Check for:
n General:
Housekeeping: lack of cleanliness or orderliness
Safety Signs and Posted Instructions
inadequate
illegible
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