Failure mode analysis for a hazardous waste clean-up manipulator

This paper describes the application of Fault Tree Analysis to the design phase of a robot manipulator for hazardous waste retrieval. The robot is to be deployed in single-shell under-ground storage tanks at the US Department of Energy (DOE) site in Hanford, Washington. These tanks contain a variety of highly radioactive waste types, necessitating extremely safe and reliable manipulator operation. Based on preliminary design drawings of this long-reach manipulator, fault trees were constructed for several critical failure scenarios. Analysis of the trees revealed a number of ways to improve the safety and reliability of the manipulator design. This paper presents a summary of the fault tree analysis, with a discussion of the applicability of qualitative and quantitative fault tree methods to hazardous waste robotics.

[1]  Joseph R. Cavallaro,et al.  A dynamic fault tolerance framework for remote robots , 1995, IEEE Trans. Robotics Autom..

[2]  B. A. Carteret.  Light Duty Utility Arm System applications for tank waste remediation , 1994 .

[3]  Hideo Tanaka,et al.  Fault-Tree Analysis by Fuzzy Probability , 1983 .

[4]  Vladimir J. Lumelsky,et al.  Real-time collision avoidance in teleoperated whole-sensitive robot arm manipulators , 1993, IEEE Trans. Syst. Man Cybern..

[5]  Joseph R. Cavallaro,et al.  Robotic fault detection and fault tolerance: A survey , 1994 .

[6]  E. J. Shen.  Retrieval of underground storage tank wastes: The Hanford challenge , 1994 .

[7]  A. A. Maciejewski,et al.  Dexterity optimization of kinematically redundant manipulators in the presence of joint failures , 1994 .

[8]  Christiaan J. J. Paredis,et al.  Kinematic design of fault tolerant manipulators , 1992 .

[9]  Mo Jamshidi,et al.  Robotics and remote systems for hazardous environments , 1993 .

[10]  J. W. Gordon,et al.  Reliability analysis of the RRV-1 robot , 1985 .

[11]  G. R. Kiebel.  Control system design for robotic underground storage tank inspection systems , 1994 .

[12]  Richard E Barlow,et al.  Introduction to Fault Tree Analysis , 1973 .

[13]  P. W. Gibbons,et al.  First generation long-reach manipulator for retrieval of waste from Hanford single-shell tanks , 1994 .

[14]  Joseph R. Cavallaro,et al.  Robotic fault tolerance: algorithms and architectures , 1993 .

[15]  Lavon B. Page,et al.  Standard deviation as an alternative to fuzziness in fault tree models , 1994 .

[16]  Richard E. Barlow,et al.  Reliability and fault tree analysis : theoretical and applied aspects of system reliability and safety assessment : papers , 1977 .

[17]  Wyatt S. Newman,et al.  Reflex control for robot system preservation, reliability and autonomy , 1994 .

[18]  Palle Christensen,et al.  Assessment of the reliability of robotic systems for use in radiation environments , 1996 .

[19]  Joseph R. Cavallaro,et al.  Expert system framework for fault detection and fault tolerance in robotics , 1994 .

[20]  Balbir S. Dhillon.  Robot reliability and safety , 1991 .