Code 8731 applies to employers engaged in conducting state regulated inspections of boilers, escalators, or elevators to survey their operative condition and safety.  

Boiler inspectors conduct regulatory inspections of high- and low-pressure boilers to ascertain the boiler condition and safe method of operation. They remove and tag unsafe boilers from service.  Tests are performed to determine the bursting point and safe working pressure of the boilers.  The inspectors check the condition of braces, straps, tubes, shells and all other internal and external boiler parts.

Escalator inspectors will check for torn or damaged step components and comb plates which are floor plates located on top and bottom of the escalator.  Tests are conducted on the steps of the escalator for any excess movement which is deemed unsafe.  The employee will inspect the comb plate for missing teeth and proper mesh with each step tread.  The condition of the emergency brakes is also inspected for proper operation.

Elevator inspectors will inspect, examine and test all parts and functions at required or scheduled intervals to ensure safe operating condition.  The examination will consist of checking the overspeed safety system, potential malfunctions or wear of the governor rope system, and excessive leaks in hydraulic drive machines.  The inspectors will also examine all landings and car door mechanical and electrical components for any defective parts.