NEBOSH IGC 2 培训课件资料 E7 第七讲.ppt

IGC2ELEMENT 7;LEARNING OUTCOMES;PHYSICAL FORMS OF HAZARDOUS SUBSTANCES;CLASSIFICATION OF CHEMICALS HAZARDOUS TO HEALTH;ILL-HEALTH DEFINITIONS;HEALTH EFFECTS;TOXICOLOGY;ROUTES OF ENTRY;TOXICITY, DOSE, RESPONSE;TARGET ORGANS;BODY DEFENCES AGAINST DUST;BODY DEFENCES - SKIN;MODEL QUESTION;DERMATITIS;MODEL QUESTION;HAZARDOUS SUBSTANCE (COSHH) ASSESSMENT;;MODEL QUESTION;Risk and Safety Phrases –EH40;PRODUCT LABELS;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;PRODUCT LABELS cont’…;What is Material Safety Data Sheet (MSDS)?;Contents of Manufacturers Safety Data Sheet (MSDS);MODEL QUESTION;32;OCCUPATIONAL EXPOSURE LIMITS (OEL);Continuous monitoring devisesExpensiveRequire considerable trainingMay not record peaks and variations, merely an averageMay not identify specific type of contaminantCan be tampered by workers;Chemical Stain Detector Tube (Grab Sampler);Stain Tube Detector;Passive and Active Samplers;Basic Survey;LIMITATIONS OF HAZARDOUS SUBSTANCE MONITORING;WORKPLACE EXPOSURE LIMITS;MODEL QUESTION;METHODS OF CONTROL;MODEL QUESTION;Local Exhaust Ventilation;MODEL QUESTION;Natural ventilation – when is it used Very low toxicity substance Steady rate of release Small quantity of contaminant Not practicable to use LEV Rate of evolution known Non specific point of release Type of contaminant is not dust Heat loss or gain is not a problem;PPE - RPE Select the type Fit test Control compatibility Comfortable Affordable No additional risk Employees duty Storage Cleaning and maintenance;MODEL QUESTION;BIOLOGICAL HAZARDS;BIOLOGICAL HAZARDS CONTROL MEASURES;MODEL QUESTION;Asbestos;Asbestos;Asbestos Uses;MODEL QUESTION;Ammonia: A colourless gas with a pungent odour Irritation to the eyes and upper respiratory tract Used in printing and fertilisers Chlorine: A greenish gas with a pungent odour Irritant to respiratory tract, abdominal pain, nausea (sensation of