Derivation of Kemkom’s Safe Limit Model for Limit Operations

Abstract

This work is aimed at rendering a tool suitable to assign the limit or range to which a change in operation could be termed safe. It adopted techniques like determination of constraining situation using the equilibrium principle and establishment of a safety limit using factors of safety. The work is based on the physical laws of equilibrium which posit that at all times, system equilibrium is constant. The importance of factor of safety is also an integral associate of the safe limit model. It utilizes 80 percent as a degree to which every operation is seen to be manifestly present and beyond which system failure occurs. It therefore derives an impetus in the direction that induces system failure and resistance is captured as the maximum system value. The work gives an allowance for adjustment of the factor safety to the safe range and or limit offered by the component, system or situation. The model was tested on mud waste recovery in a well drilling operation and on patients in the medical industry to know when to administer blood transfusion. Results showed that at the given factor of safety, the number of times to recycle the mud was determined. Also, the point at which blood transfusion is required was also found. This result compared favourably with results from other medical sources. The safe limit model finds great applicability in limit determination problems.