Application of PLR Classification Guide for Accidental Potential in Shanghai Chemical Enterprises

According to major types of accidents, such as fire, explosion and toxic release, the definition and methods of identification for “Major Accident Potential” in Shanghai were carried out in “PLR Classification Guide for Accident Potential”, following the basic principle of hazard assessment combined with the survey of accidents occurred and accident potentials in Shanghai. Combining three evaluating factors, i.e., probability (P), loss (L) and effect area (R 0.5 ) of the accidents, the “PLR accident potential classification assessment table” was proposed to indicate the consequence of accident potential classification. Through the trial application of the new approach in Shanghai major chemical enterprises, the operability and effectiveness of implementation were verified. The approach provides scientific management method in identification, assessment and improvement of major accident potentials in Shanghai.