A. Maintenance and operations teams can improve machinery reliability by considering the same basic things that designers look at when designing reliability into a machine.

B. There is little that can be done to improve the basic designed-in reliability" of rotating machinery once it has been manufactured and placed in service.

C. Once a machine is in service, the operating temperature can be lowered without consulting the manufacturer since lowering temperature always extends machine life.

D. Manufacturers have to take all potential operating conditions into account when designing rotating equipment so it's not likely you can improve reliability by changing the operating environment.