As the current hazard identification technique is suitable for different factories and production processes., improper use of the hazard identification techniques may lead to the search for risk factors which does not cover operations. This research aims to develop OOHIM hazard identification technique that covers all operations of industrial plants with different production processes by using the strengths of Checklist technique, What If Technique, HAZOP technique and JSA technique to develop into OOHIM technique.

              This research brings the OOHIM technique to test for risk factors with the auto-part manufacturing factory in Nakhon Ratchasima province to compare with the Checklist technique that the factory is using. Test results and analysis using the Radar Chart show that the OOHIM technique finds risk factors covering all four operations in similar ratios, 39% in Human, 17% in Machine & Equipment, 28% Standard & Method, and 17% in Environment & Facility. While each of the risk in the four operations of Checklist technique seems to have a distinguish ratio to others with 36% in Human, 7% in Machine & Equipment, 14% in Standard & Method, and 43% in Environment & Facility.

              As a result, the OOHIM technique will search for risk factors, covering all four operations, rather than the Checklist technique, which will focus more on the Human and Environment.

              This research is a comparative test of only one industrial plant. Further research should be compared with other hazard identification techniques and should be tested with many types of industrial plants to prove that it is suitable for certain industrial plants.