Module 7 Chemical Management..pdf
- 1. Module 7. Chemical Management
- 2. Learning Outcomes By the end of this module, you should be able to: 1. Recognize chemical hazards commonly encountered in the laboratory and field. 2. Identify common & significant chemical and physical health hazards 3. Apply SDS in routine work. 4. Explain warning properties of various chemical hazards 5. Explain how to control and evaluate chemical hazards. 6. Apply a chemical hygiene plan. 7. Use a chemical spill kit
- 3. Outline 1. Hazardous Chemicals 2. Benefits of good chemical management and safety 3. Use of Safety Data Sheet (SDS) 4. Chemical Hygiene Plan (CHP) 5. Handling of chemicals 6. Management of chemical spills 7. Training
- 5. Hazardous Chemicals Any chemical or material in a quantity or form that poses a risk to health, safety or the environment when transported, used, stored or released.
- 6. Chemical Hazards All chemicals are hazardous. They pose both biosafety and biosecurity risks, and their use must be very well controlled. ● Chemicals are the most common and significant health hazards ● Chemicals can be hazardous for numerous reasons and can combine with other chemicals to make new hazards ● All hazards must be taken into account when using and storing chemicals.
- 7. Chemical Hazard Classes Globally harmonized system of classification and labeling of chemicals is used • Flammables-Isopropanol • Oxidizers – Formalin • Corrosives depending on pH Value, Sulfuric Acid • Inorganic or Organic (CH20H, Ca, Cd, H2SO4) • Toxins • Reactive Chemicals Be aware that some chemicals have multiple hazards and therefore require further segregation
- 8. Corrosives Acids Types of Acids • Organic acids – Lactic acid, • Formic acid • Inorganic - HCl, H2SO4 • Oxidizing acids – Nitric acid Bases (Alkalis, Caustics) • NaOH Storage /Segregation
- 9. Toxins • Acute & Chronic Poisons; Highly Toxic • Carcinogens asbestos, Dimethyl sulfate • Reproductive & Developmental Toxins Ethidium bromide • Neurotoxins, organ specific toxins, Irritants
- 10. Summary of Chemical Hazard Classes All these chemicals hazards can be encountered in both the laboratory and field settings depending on the process
- 11. Benefits of Good Chemical Management and Safety • Decreases hazards to workers, community and environment • Meet increasing regulatory, industry and NGO pressure • Good for business 11
- 12. 2. Safety Data Sheets
- 13. Safety Data Sheets • Understanding chemical characteristics helps identify the hazards & protect yourself. • Information obtained from SDS/SDB of a specific chemical. • Safety Data Sheets (SDS) must be available and easily accessible to all employees. • All must understand how to use it.
- 14. Information Found on SDS • Solubility of a chemical • Explosive limits of a chemical • Melting point of a chemical • Specific gravity and density • Vapor density • Flash and boiling points • Vapor pressure and auto ignition temperature 1. Chemical Identity 2. Manufacturer's Name and Contact Information 3. Hazardous Ingredients/Identity Information 4. Physical/Chemical Characteristics 5. Fire and Explosion Hazard Data 6. Reactivity Data 7. Health Hazard Data 8. Precautions for Safe Handling and Use 9. Control Measures
- 15. Uniform Laboratory Hazard Signage (ULHS) • The pictograph identification system • These symbols used to help identify hazards
- 16. 3. Chemical Hygiene Plan (CHP)
- 17. Chemical Hygiene Plan (CHP) (1/2) Refers to a plan outlining procedures to protect employees from health hazards associated with chemicals. It shall follow the OSHA, 2007 guidelines, and include: 1. Safety Data Sheet (SDS), formerly called Material Safety Data Sheet (MSDS) 2. Right to know rule 3. Outlines procedures to protect employees from health hazards associated with chemicals
- 18. Chemical Hygiene Plan (CHP) (2/2) 4. Includes occupational health surveillance 5. Copies of job hazard analysis 6. Annual chemical hygiene plan (CHP) inspection 7. Chemical inventory 8. Proper & adequate PPE
- 19. 4. Handling of Chemicals
- 20. Handling of Chemicals • Avoid direct contact with the chemical • Limit exposure levels and time • Enforce good hygiene practice, PPE • Take appropriate fire prevention & control measures • Use equipment not affected by metal being handled • Ensure the chemical is not mixed with others • Use engineering & good common sense • Perform training on hazard controls
- 21. Protective Measures • Substitute with a safe(r) chemical, if possible • Use appropriate engineering controls, including ventilation • Wear appropriate personal protective equipment (PPE) when handling hazardous materials • Remove PPE when entering common areas and hallways • Label areas that require PPE • Do not eat, drink, smoke, store food, or apply makeup in work areas
- 22. Facility-Based Best Practices in Chemical Management 22
- 23. Hierarchy of Controls In proper chemical management, always consider the best options based on suitability for use and the associated risks in relation to use and disposal. The hierarchy of controls provide a good platform for these considerations.
- 24. 5. Spill Control & Prevention
- 25. Spill Control & Prevention In case of spills, clean up using appropriate spill kit
- 26. Before Cleaning a Spill 1. Risk assessment needs to be done. 2. Individuals should be familiar with the properties and hazards of the materials with which they work with. 3. Adequate training for clearing up small spills is required. 4. Appropriate types and amounts of spill clean-up materials and personal protective equipment are immediately available. 5. Consult the SDS for the specific chemical.
- 27. Chemical Spill Kit - Solidifiers 27 Red Z solidifier Green Z solidifier Acid Lock solidifier Alky solidifier ⚫ Scoop/scraper ⚫ 9"x12" zip lock bag ⚫ Hazardous waste label ⚫ Non-Hazardous waste label ⚫ Universal spill boom ( 5’X 17’) ⚫ Universal spill pads (17’ x 19’) ⚫ Universal pillow ( 17’X17’) ⚫ Nitrile gloves
- 28. 6. Training
- 29. Training Training is required for employees who are exposed to hazardous chemicals in their work area: • At the time of initial assignment • Whenever a new hazard is introduced into their work area Training must be provided in the language that the employee can understand
- 30. What Training is Needed • Explanation of information on labels, SDSs, and how to obtain and use available hazard information • How to detect the presence or release of a hazardous chemical (using monitoring devices, observation, or smell) • Hazards and potential health effects of chemicals • Protective measures such as engineering controls, work practices, and the use of PPE
- 31. What Information Must be Provided (1/2) • Operations in their work areas where hazardous chemicals are present • Location and availability of the written hazard evaluation procedures, communications program, lists of hazardous chemicals, and the required SDSs • The nature of the hazardous chemicals involved and the risks to the employee • The control measures implemented, and how to use and maintain them correctly
- 32. What Information Must be Provided (2/2) • The arrangements in place to deal with emergencies, including evacuation procedures, containing and cleaning up spills and first aid instructions • The selection, use, maintenance and storage of any PPE required to control risks, and the limitations of the PPE • The health monitoring that may be required and the worker’s rights and obligations • Labelling of containers of hazardous chemicals, and the information that each part of the label provides and why it is important • The work practices and procedures they need to follow in the use, handling, processing, storage, transportation, cleaning up and disposal of hazardous chemicals.
- 33. Key Messages 1. You should be familiar with chemical hazard classes. 2. Recognize chemical hazards which are dependent on physical properties, toxicity, use and environmental conditions present. 3. You should be familiar with the warning properties of chemical hazards in your working area 4. Always consult Safety Data Sheet (SDS) other reference sources
- 34. The End You have come to the end of this Module. Kindly attempt the module quiz and aim to attain a pass mark of 80%. Please participate in the discussion forum before proceeding to module 8