accident
bad
break
burst
construction
damaged
disaster
emergency
energy
engineering
factory
failure
gas
heat
heating
hot
industrial
industry
ineffective
iron
leakage
leaking
line
maintenance
metal
old
pipe
pipeline
piping
plant
plumbing
pollution
power
pressure
problem
pump
repair
rusty
service
station
steam
steel
stream
system
tube
valve
vapor
water
wet
winter