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CHRA MANUAL 2nd EDITION

TABLE OF CONTENT
Page Chapter 1 : Introduction Chapter 2 : Concepts Chapter 3 : Steps in Assessment Chapter 4 : Deciding the Assessor Chapter 5 :Gather Information Chapter 6 : Divide into Work Units Chapter 7 : Determine Degree of Hazard Chapter 8 : Evaluate Exposure Chapter 9 : Control Measures Chapter 10 : Concluding The Assessment Chapter 11 : Action to be taken Chapter 12 : Record Keeping Chapter 13 : Review Assessment References Appendices Forms 1 4 7 10 12 15 17 22 32 37 41 45 46

Department of Occupational Safety & Health, Ministry of Human Resources, Malaysia

December 2000

CHRA MANUAL 2nd EDITION

LIST OF APPENDICES & FORMS
APPENDICES Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix Appendix 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15: 16: 17: Routers of entry Health Effects Procedure for CHRA Registration as Assessor Format of the Chemical Register CSDS Requirements under CPL 1997 HR Determination & Exposure Sampling Strategy Occupational Exposure Limits Quantitative determination of inhalation exposure magnitude from airborne measurement result Estimation of Exposure Factors Affecting Inhalation Exposure Factors Affecting Dermal Exposure Solvent Drying Time Odour Level Thresholds Degree of physical activities & breathing rate Procedure for Estimating the Degree of Exposure

FORMS Form A Form B Form C Form D Form E Form F : : : : : : List of chemicals Work unit description Task description Workplace exposure assessment Risk matrix Action to be taken

Department of Occupational Safety & Health, Ministry of Human Resources, Malaysia

December 2000

CHRA MANUAL 2nd EDITION

PREFACE
These guidelines may be cited as the Manual for the Assessment of the Health Risks arising from the use of Hazardous Chemicals in the Workplace: Second Edition