Hazard Analysis for Escalator Emergency Braking System via System Safety Analysis Method Based on STAMP

Due to the complex mechanical structure and control process of escalator emergency braking systems (EEBS), traditional hazard analysis based on the event chain model have limitations in exploring component interaction failure in such a complex social-technical system. Therefore, a hazard analysis framework is proposed in this paper for hazard analysis of complex electromechanical systems based on system-theoretic accident model and process (STAMP). Firstly, basic principles of STAMP are introduced and comparison with other hazard analysis methods is conducted, then the safety analysis framework is proposed. Secondly, a study case is performed to identify unsafe control actions of EEBS from control structures, and a specific control diagram is organized to recognize potential example casual scenarios. Next, comparison between fault tree analysis and STAMP for escalator’s overturned accident shows that hazards related to component damaged can be identified by both, while hazards that focus on components interaction can only be identified by STAMP. Besides, single control way and tandem operation process are found to be the obvious causal factors of accidents. Finally, some improvement measures like decibel detection or vibration monitoring of key components are suggested to help the current broken chain detection to trigger the anti-reversal device for a better safe EEBS.

[1]  Nancy G. Leveson,et al.  A new accident model for engineering safer systems , 2004 .

[2]  Rong Li,et al.  Simulation and analysis of congestion risk during escalator transfers using a modified social force model , 2015 .

[3]  Elena Rogova,et al.  Braking system redundancy requirements for moving walks , 2015, Reliab. Eng. Syst. Saf..

[4]  Yuan Zhu,et al.  STAMP-based analysis of deepwater well control safety , 2018, Journal of Loss Prevention in the Process Industries.

[5]  M. Greenwood,et al.  An Inquiry into the Nature of Frequency Distributions Representative of Multiple Happenings with Particular Reference to the Occurrence of Multiple Attacks of Disease or of Repeated Accidents , 1920 .

[6]  Yunhua Gong,et al.  STAMP-based causal analysis of China-Donghuang oil transportation pipeline leakage and explosion accident , 2018, Journal of Loss Prevention in the Process Industries.

[7]  Jian Lu,et al.  An analysis of escalator-related injuries in metro stations in China, 2013-2015. , 2017, Accident; analysis and prevention.

[8]  Li He,et al.  Modeling and safety strategy of passenger evacuation in a metro station in China , 2012 .

[9]  W. Haddon.  The changing approach to the epidemiology, prevention, and amelioration of trauma: the transition to approaches etiologically rather than descriptively based. , 1968, American journal of public health and the nation's health.

[10]  Yongming Zhang,et al.  A Novel Reconstruction Approach to Elevator Energy Conservation Based on a DC Micro-Grid in High-Rise Buildings , 2018 .

[11]  Kefan Xie,et al.  Factors Influencing Escalator-Related Incidents in China: A Systematic Analysis Using ISM-DEMATEL Method , 2019, International journal of environmental research and public health.

[12]  Jianhua Gong,et al.  Modeling, simulation and analysis of group trampling risks during escalator transfers , 2016 .

[13]  Zahra Mohaghegh,et al.  Incorporating organizational factors into probabilistic risk assessment of complex socio-technical systems: Principles and theoretical foundations , 2009 .

[14]  Thomas H. Bradley,et al.  Application of systems theoretic process analysis to a lane keeping assist system , 2017, Reliab. Eng. Syst. Saf..

[15]  Jean-Yves Choley,et al.  Improved Safety Analysis Integration in a Systems Engineering Approach , 2019, Applied Sciences.

[16]  Jens Rasmussen,et al.  Risk management in a dynamic society: a modelling problem , 1997 .

[17]  J. Carroll,et al.  Moving Beyond Normal Accidents and High Reliability Organizations: A Systems Approach to Safety in Complex Systems , 2009 .

[18]  Kalevi Huhtala,et al.  Elevator Fault Detection Using Profile Extraction and Deep Autoencoder Feature Extraction for Acceleration and Magnetic Signals , 2019, Applied Sciences.

[19]  Kheir Al-Kodmany,et al.  Tall Buildings and Elevators: A Review of Recent Technological Advances , 2015 .

[20]  Umut Gulacti,et al.  Escalator-related injuries in one of the deepest subway stations in Europe , 2019, Annals of Saudi Medicine.

[21]  S. Kalligeros.  Predictive Maintenance of Hydraulic Lifts through Lubricating Oil Analysis , 2013 .

[22]  Ki-Hyung Kim,et al.  Escalator: An Autonomous Scheduling Scheme for Convergecast in TSCH , 2018, Sensors.

[23]  Chia-Fen Chi,et al.  In-depth investigation of escalator riding accidents in heavy capacity MRT stations. , 2006, Accident; analysis and prevention.

[24]  Chan Jong Park,et al.  Braking performance analysis of an escalator system using multibody dynamics simulation technology , 2015 .

[25]  Nancy G. Leveson,et al.  Early Concept Development and Safety Analysis of Future Transportation Systems , 2016, IEEE Transactions on Intelligent Transportation Systems.

[26]  Zahra Mohaghegh,et al.  Incorporating organizational factors into Probabilistic Risk Assessment (PRA) of complex socio-technical systems: A hybrid technique formalization , 2009, Reliab. Eng. Syst. Saf..

[27]  T. Laporte,et al.  Working in Practice But Not in Theory: Theoretical Challenges of “High-Reliability Organizations” , 1991 .

[28]  Nancy G. Leveson,et al.  Hazard Analysis of Complex Spacecraft Using Systems-Theoretic Process Analysis , 2014 .