Laboratory safety accidents have recently been recognized as a new topic for safety research, and the existing research shows that human factor is a leading factor that causing laboratory accidents. However, at present, particular research on Human Error Probability (HEP) quantification of risky experiments in laboratory is limited. Therefore, it is necessary to implement Human Reliability Analysis (HRA) technique to quantify HEP during risky experiments in laboratory. Due to the above description, this study proposes a weighted fuzzy Cognitive Reliability and Error Analysis Methods (CREAM) to deal with HEP quantification for laboratory safety.

The proposed method comprehensively considers each CPC’s weight, each CPC’s fuzzy membership degree, and the weight of each activated fuzzy If-Then rule to determine the final membership degree of each control mode. Afterwards, the wanted HEP value can be estimated by the centre of area defuzzification.

This study select the 12•26 laboratory explosion accident in Beijing Jiaotong University as the example, and through the proposed method, the HEP value and levels of the human reliability can be collected. Finally, some particular efforts can be reasonably made to avoid human errors.