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The manual provides a standardised protocol for assessors, and helps employers and occupational safety and health practitioners understand the assessment scope for objective report review. It aligns the assessment with the Occupational Safety and Health (Use and Standard of Exposure of Chemicals Hazardous to Health) Regulations 2000 (USECHH Regulations) and supports clear steps from planning and information gathering to reporting, reassessment, and control of records.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/chra-manual-3rd-edition-2018-manual-of-recommended-practice-chemical-health-risk-assessment-chra/322515/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/chra-manual-3rd-edition-2018-manual-of-recommended-practice-chemical-health-risk-assessment-chra/322515.png","ImageObject",300,407,{"name":92,"@type":93},"Sarah ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-24","2026-09-21",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of a Chemical Health Risk Assessment (CHRA) under USECHH Regulations?","Question",{"text":112,"@type":113},"To assess health risks arising from the use of chemicals hazardous to health (CHTH) in the workplace for compliance with the USECHH Regulations.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which main steps does the manual cover for completing a CHRA?",{"text":117,"@type":113},"It outlines a structured process including introduction and scope, gathering information, dividing into work units, determining degree of hazard, assessing exposure, determining risk, and then moving through control measures, monitoring, medical surveillance, conclusion and reporting.",{"name":119,"@type":110,"acceptedAnswer":120},"What are the expectations for report writing and follow-up after the assessment?",{"text":121,"@type":113},"The manual specifies a report-writing structure (e.g., executive summary, methodology, findings, recommendations) and includes chapters on reassessment and control of records, including medical surveillance, training, and PPE programmes.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},322515,1790443108,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},962085320529,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","3rd Edition  \nFirst reprint 2018  \n1  \nThis guideline may be cited as a Manual of Recommended Practice on the Assessment of the Health Risks Arising from the Use of Chemicals Hazardous to Health at the Workplace 3rd Edition.  \nThe manual provides practical guidance and advice for conducting an assessment of risk to health related to the use of chemicals hazardous to health (CHTH) at the workplace for compliance to the requirements of the Occupational Safety and Health (Use and Standard of Exposure of Chemicals Hazardous to Health) Regulations 2000 or as amended hereinafter referred to as USECHH Regulations.  \nThis manual specifically provides a standardised protocol for assessor to conduct a full assessment using a method known as Chemical Health Risk Assessment (CHRA) . This manual has also been designed to assist employers and occupational safety and health practitioners to understand the scope of the assessment sufficiently in their objective review of the report.  \nThis manual will be reviewed from time to time. Written comments from any interested persons or parties are welcomed. These should be sent to the Department of Occupational Safety and Health (DOSH) for further consideration in improving the manual.  \nDirector General  \nDepartment of Occupational Safety and Health Malaysia  \n2017  \n2  \nA Manual of Recommended Practice on  \nASSESSMENT OF THE HEALTH RISKS ARISING FROM THE USE OF CHEMICALS HAZARDOUS TO HEALTH AT THE WORKPLACE  \nThe Department of Occupational Safety and Health (DOSH) wishes to thank and acknowledge the members of the Drafting Committee (Jawatankuasa Penggubalan bagi Semakan/Pindaan‘Assessment of the Health Risks Arising from the Use of Chemicals Hazardous to Health at the Workplace 3rd Edition’) for their contributions towards the preparation of this manual.  \nDrafting Committee  \n1. Ir. Hj. Anuar bin Mohd Mokhtar  \n2. Ir. Dr. Majahar bin Abd. Rahman  \n3. Shabanon binti Mohd Sharif  \n4. Ir. Roslenda binti Hasan  \n5. Hamidi bin Saidin  \n6. Rusnah binti Nanyan  \n7. Noor Fazira binti Ab Aziz  \n8. Hj. Mohd Salleh bin Abd Rahman  \n9. Dr. Rajinderjit Singh Hullon  \n10. Sulaiman bin R. Rahman  \n11. Hjh. Wan Sabrina binti Wan Mohamad  \n12. Azizin bin Zainudin  \n13. Marina binti Zainal Farid  \n14. Hjh. Noormahani binti Harun  \n15. Marina Yong Poh Nyuk  \n16. Norhamimi binti Mohd Yusof  \n17. Suhaily binti Amran  \n18. Mohd Hafizullah bin Harun  \n19. Syarikin binti Mat Nayah  \nDOSH (Chairman from 2009 until August 2014)  \nDOSH (Chairman from September 2014 to  \n2017) DOSH DOSH DOSH DOSH DOSH  \nDOSH (2009-2017) DOSH  \nDOSH (2009 – 2016)  \nShell Malaysia Trading Sdn. Bhd.  \nPetroliam Nasional Berhad (2009 – 2014)  \nPetroliam Nasional Berhad (2015 – 2017) Malaysian Industrial Hygiene Association  \nMalaysian Industrial Hygiene Association ExxonMobil Exploration and Production Malaysia Inc.  \nNational Institute of Occupational Safety and Health (2009-2017)  \nDOSH  \nDOSH (Secretariat)  \nWe also wish to thank individuals who have directly or indirectly contributed in the preparation of this manual.  \n3rd Edition  \nFirst reprint 2018  \n3  \nABBREVIATION  \nTERMINOLOGY  \nCHAPTER 1: INTRODUCTION  \n1.1 Scope  \n1.2 Purpose and Objectives of a Chemical Health Risk Assessment  \n1.3 Content of Chemical Health Risk Assessment  \n1.4 Assessment Strategies  \n1.5 Assessment Concept  \n1.6 Select Assessor  \n1.7 Steps in CHRA  \nCHAPTER 2: GATHER INFORMATION  \n2.1 Information to be Gathered  \n2.2 Sources of Information  \nCHAPTER 3: DIVIDE INTO WORK UNIT  \n3.1 Categorisation of a Work Unit  \n3.2 Practical Steps to Identify Work Unit  \nCHAPTER 4: DETERMINE DEGREE OF HAZARD  \n4.1 Identification of Hazard  \n4.2 Degree of Hazard  \n4.3 Example on Determination of Degree of Hazard by Inhalation and Dermal  \nCHAPTER 5: ASSESS EXPOSURE  \n5.1 Possible Routes of Exposure  \n5.2 Evaluate Exposure for Inhalation  \n5.3 Evaluate Exposure for Dermal  \n5.4 Ingestion Assessment  \nCHAPTER 6: RISK DETERMINATION  \n6.1 Level of Risk for Inhalation Exposure  \n6.","cbCaidzOHhnb4z3p","https://ap.wps.com/l/cbCaidzOHhnb4z3p","pdf",2163322,149,"English","# Chapter 1: Introduction\n## Scope\n## Purpose and Objectives of a Chemical Health Risk Assessment\n## Content of Chemical Health Risk Assessment\n## Assessment Strategies\n## Assessment Concept\n## Select Assessor\n## Steps in CHRA\n# Chapter 2: Gather Information\n## Information to be Gathered\n## Sources of Information\n# Chapter 3: Divide into Work Unit\n## Categorisation of a Work Unit\n## Practical Steps to Identify Work Unit\n# Chapter 4: Determine Degree of Hazard\n## Identification of Hazard\n## Degree of Hazard\n## Example on Determination of Degree of Hazard by Inhalation and Dermal\n# Chapter 5: Assess Exposure\n## Possible Routes of Exposure\n## Evaluate Exposure for Inhalation\n## Evaluate Exposure for Dermal\n## Ingestion Assessment\n# Chapter 6: Risk Determination\n## Level of Risk for Inhalation Exposure\n## Level of Risk for Dermal Exposure\n# Chapter 7: Control Measures\n## Types of Control Measures\n## Adequacy of Control Measures\n## Specific Control Measures\n# Chapter 8: Exposure Monitoring Programme\n# Chapter 9: Medical Surveillance Programme\n# Chapter 10: Conclude, Recommend and Prioritise\n## Assessment Conclusion\n## Actions to be Taken\n## Specific Actions to be Taken\n## Action Priority\n# Chapter 11: Report Writing\n## Report Title Page\n## Executive Summary\n## Table of Contents\n## Introduction\n## Process and Work Unit Description\n## Assessment Methodology\n## Assessment Findings\n## Discussion\n## Recommendation on Action to be Taken\n## References\n## Appendices\n# Chapter 12: Reassessment\n# Chapter 13: Control of Records\n## Medical Surveillance Programmes\n## Training Programmes\n## PPE Programmes","[{\"question\":\"What is the purpose of a Chemical Health Risk Assessment (CHRA) under USECHH Regulations?\",\"answer\":\"To assess health risks arising from the use of chemicals hazardous to health (CHTH) in the workplace for compliance with the USECHH Regulations.\"},{\"question\":\"Which main steps does the manual cover for completing a CHRA?\",\"answer\":\"It outlines a structured process including introduction and scope, gathering information, dividing into work units, determining degree of hazard, assessing exposure, determining risk, and then moving through control measures, monitoring, medical surveillance, conclusion and reporting.\"},{\"question\":\"What are the expectations for report writing and follow-up after the assessment?\",\"answer\":\"The manual specifies a report-writing structure (e.g., executive summary, methodology, findings, recommendations) and includes chapters on reassessment and control of records, including medical surveillance, training, and PPE programmes.\"}]","CHRA%20Manual%203rd%20edition%202018 - Manual of Recommended Practice - Chemical Health Risk Assessment (CHRA) | PDF",1789962925,375]