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Control of Industrial Major Accident Hazards (CIMAH) Report Page 1
Ranhill SAJ Sdn. Bhd. Revision 01
Part D: Information on the Potential Major Accident Date Aug 2019

CONTENTS

D.1.0 SOURCES OF MAJOR ACCIDENT ...................................................................... 4
D.1.1 Method of Hazard Identification, Risk Assessment & Risk Control .................... 4

D.1.1.1 Hazard Identification ................................................................................... 4
D.1.1.2 Risk Assessment ........................................................................................ 4

D.1.1.3 Risk Control ................................................................................................ 7
D.1.2 Sources of Major Accident ................................................................................. 8

D.2.0 MAJOR ACCIDENT EVENT ANALYSIS ............................................................. 10
D.2.1 Loss of Containment ........................................................................................ 10

D.2.2 Spontaneous Failures ...................................................................................... 11
D.2.3 External Events ............................................................................................... 11
D.2.4 Potential of Major Accident .............................................................................. 12

D.2.5 Physical Effects Modelling ............................................................................... 14

D.2.5.1 Probit Analysis.......................................................................................... 14
D.2.5.2 Toxic Gas Dispersion ............................................................................... 16
D.3.0 PREVENTION, CONTROL AND MINIMIZATION MEASURES ........................... 17

D.3.1 Inherent Safety by Design ............................................................................... 17

D 3.1.1 Segregation & Isolation of Hazardous Substance .................................... 17
D 3.1.2 Minimization of Inventory .......................................................................... 17
D 3.1.3 Design & Construction .............................................................................. 18

D 3.1.4 Hazardous Area Classification ................................................................. 18
D.3.2 Engineering Measures ..................................................................................... 18

D 3.2.1 Structure Integrity ..................................................................................... 18
D 3.2.2 Process Containment ............................................................................... 19

D 3.2.3 Ignition Control ......................................................................................... 19
D 3.2.4 Protection System .................................................................................... 19

D 3.2.5 Detection System ..................................................................................... 19
D 3.2.6 Shutdown System .................................................................................... 19

D 3.2.7 Emergency Response .............................................................................. 20
D 3.2.8 Lifesaving ................................................................................................. 20

D.3.2.9 Hazard & Effect Prevention, Control and Mitigation ................................. 21
D.3.3 Management of Barriers .................................................................................. 23