Hazard Modification Techniques for Repair and Multiple Operating Conditions

Two modeling techniques for simulating availability are developed. A technique is developed for introducing multiple operating conditions into simulation models. Another technique is developed for incorporating an operating-time adjustment for repair in availability simulations. A general operating-time adjustment-technique is developed and then two special cases of this technique are discussed. The two modeling techniques developed in this paper allow the availability engineer to obtain more detail in availability studies. These techniques were used in the Farm Machinery Availability Cost Simulation Model.