HazCom General

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University of Texas at Tyler: 

University of Texas at Tyler General Hazard Communication Training


TEXAS HAZARD COMMUNICATION ACT Purpose, Scope & Authority of the Act To protect employees from exposure to harmful chemicals To provide employers and employees with the guidance needed to comply with the Texas Hazard Communication Act (THCA) The THCA is enforced by the authority of the Texas Department of Health Components Hazardous Chemicals ID Workplace Chemical List Employee Education Program Material Safety Data Sheets Labeling Employee Rights The Texas Hazard Communication Act “Notice to Employees” is posted in each department where other notices are normally posted.


UT TYLER HAZCOM PROGRAM Purpose: To prevent injuries and illnesses resulting from exposure to hazardous chemicals and to provide UTT employees access to information on hazardous chemicals used or stored in the workplace. Objective: To provide a systematic guide for the safe storage, handling and use of hazardous chemicals by UTT Employees through information, training and the implementation of procedures incorporating safe work practices.


OBJECTIVES Identify the types of hazardous materials in your workplace. MSDSs Labels Identify Storage and Handling requirements. Identify how hazardous materials can affect the body. Identify how to properly handle an emergency. Identify resources available to help maintain a safe work environment.

Hazardous What?: 

Hazardous What?

What is a Hazardous Chemical?: 

What is a Hazardous Chemical? Chemical that is a physical or health hazard.

Physical vs Health Hazard: 

Physical vs Health Hazard Physical hazard - burns from fire burns from an acid Health hazard - blindness from methanol (methyl alcohol) liver damage from carbon tetrachloride

Material Safety Data Sheets: 

Material Safety Data Sheets Required if a compound poses a physical or health hazard. Supplied by manufacturer, distributor or importer Each department has copies of the MSDS for products used in that department. Master list maintained by EH&S

16-part MSDS Sections: 

16-part MSDS Sections Chemical Compound & Company ID Composition Hazards Identification First Aid Measures Fire Fighting Information Spill Measures Handling and Storage Exposure Limits Properties (Chemical & Physical) Stability & Reactivity Toxicological information Ecological information Disposal information Transport information Regulatory information Additional information

Flammable : 

Flammable Capable of sustaining a fire at NORMAL working temperatures Check Flash Point (FP) of the Material on the MSDS OSHA FP < 100 F (38 C) EPA/DOT FP < 140 F (60 C) Examples: Gasoline Methyl Ethyl Ketone


Corrosive Capable of causing tissue death or ‘eating’ through materials. Examples Strong acids battery acid (sulfuric acid) muratic acid (hydrochloric acid) Strong bases sodium hydroxide (lye) ammonia


Oxidizers Chemicals that can increase the chance of a fire getting out of control. Both Inorganic and Organic Oxidizers Organic oxidizers burn on their own. Number of organic compounds may FORM unstable peroxides during storage – Diethyl ether. Inorganic added oxygen to the ‘mix’ in a fire Oxidizers NEED NOT CONTAIN OXYGEN! Examples include fertilizer/ammonium nitrate pool chlorine tablets hydrogen peroxide


Reactive Chemicals that react violently with other specific compounds and give off excess heat or fumes Examples: Rubbing alcohol and aluminum foil Cyanides and acids certain metals and acids

Compressed Gas: 

Compressed Gas Gases, under pressure, which may become missiles if valves are broken. May also be poisonous, flammable, corrosive, or reactive. Examples: Acetylene and Oxygen tanks for welding Fire extinguisher bottles Compressed air

Physical Hazard: Compressed Gas: 

Physical Hazard: Compressed Gas Cylinder safety All gas cylinders must be properly secured. A tanks cart must be used when moving cylinders. The cap must be on when transporting (Never move with regulator installed). Exposure to fire may cause containers to rupture/explode. Gas cylinders must be labeled with their contents. Empty gas cylinders are marked “EMPTY.” Examples: Nitrogen and oxygen gases. Compressed air. Fire extinguisher bottles.

Gas Cylinder Explosions: 

Gas Cylinder Explosions An individual left an “E” size oxygen and acetylene cylinder on the back seat of a Toyota dual cab over a weekend. The acetylene cylinder must not have fully closed and a small leak occurred. Acetylene accumulated over the weekend. On Monday morning the individual approached the truck and opened the door. A large explosion took place. It is thought that the ignition was caused by either the internal light, the automatic door control or by a mobile phone which was on the front seat of the truck. The person was also a smoker. He has damage to his ear drums and facial damage. As you can see by the attached photos he was very lucky.

Water Reactives: 

Water Reactives Chemicals that can react violently when in contact with Water Water Vapor in the air Examples: sulfuric acid (battery acid) sodium hydroxide (lye) phosphorus compounds

Extreme Cold: 

Extreme Cold Dry Ice Surface temperature. Minus 109.3 F (-79 C) Burns hand in less than three seconds Wear heavy dry gloves. Suffocation hazard. Liquid Nitrogen Melting point: -210 °C Boiling point: -196 °C Generally not used in vacuum pump traps Allows a condensation of liquid oxygen in trap (potential explosion hazard)


Irritants Chemicals that can cause temporary, reversible damage to tissue. Irritants reactions occur with first contact often result in contact dermatitis. Examples powdered chemicals cutting oils solvents


Sensitizers Sensitizers - cause usually reversible, temporary damage to tissues usually no problem with the first contact can cause an allergic reaction on later exposures Examples isocyantes/formaldehydes (used in adhesives and foams) nickel compounds (plating/metal cutting oils/jewelry)


Toxics Chemicals that can cause irreversible damage to specific organs or tissues in the body. Can be either acute or chronic. Acute - effects occur within ~ 72 hours Chronic - effects occur after numerous exposures over a long period of time.

Chronic Toxicity: 

Chronic Toxicity Chronic - benzene (found in gasoline) carcinogen chlorinated solvents 1,1,1 trichloroethylene, methylene chloride liver damage, carcinogen

Acute Toxic: 

Acute Toxic Acute - methanol (methyl alcohol - wood alcohol) causes blindness ethylene glycol (antifreeze) kidney damage

Container Labeling: 

Container Labeling Wording must agree with Material Safety Data Sheet (MSDS) Check for the type of label on the container Identify labels that can’t be easily read Replace worn out labels Use departmental labels to show date received. When transferring to small containers, make sure that department labels are filled out.

HMIS Label : 

HMIS Label

HMIS/HMIG System: 


HMIG Protective Equipment: 

HMIG Protective Equipment

HMIG Protective Equipment: 

HMIG Protective Equipment X= ASK FOR INSTRUCTIONS!

NFR/NFPA Label: 

NFR/NFPA Label 0 2 2 W Health Flammability Reactivity Other Hazards

NFR/NFPA System: 


Department of Transportation Labels: 

Department of Transportation Labels

Chemical Inventory: 

Chemical Inventory At UT Tyler, each department keeps an inventory of hazardous materials in their area. The Hazardous Materials Inventory (HMI) is maintained by the Department Safety Liaisons (DSL). The DSLs forward a copy to the EH&S Office by December 31, of each calendar year.

Handling Hazardous Material: 

Handling Hazardous Material Read MSDS Assemble required PPE Review Procedures

Routes of Exposure: 

Routes of Exposure Ingestion Absorption/ Penetration Inhalation

Target Organs: 

Target Organs

Hodge-Sterner Table Degree of Toxicity: 

Hodge-Sterner Table Degree of Toxicity

Toxicity Rating: 

Toxicity Rating LD50 in mg compound/kg body weight of test animal

Environmental Factors: 

Environmental Factors Synergists 1+1 = 5 Ethanol and carbon tetrachloride Potentiation 0+1 = 3 Milk and lead Antagonists 2+2 = 1 Functional Ca decreases Cd uptake Chemical EDTA binds Pb Dispositional Alcohols use same enzyme Receptor Block binding at a site



Skin Penetration: 

Skin Penetration

Skin Responses: 

Skin Responses Acute Local reversible reaction with redness/swelling/itching Cumulative Exposure (continuous) that leads to irritation not seen with single exposure Corrosive Local irreversible reaction with redness/swelling/ulceration and necrosis Phototoxicity Irritation resulting from UV exposure Allergic responses Itching/swelling/redness/ulceration due to exposure to allergen. First contact does not usually produce response


Eyes Acids Sulfuric acid (removes water and generates heat) Hydrochloric (severe at pH 1, minimal at pH 3) Alkalies NaOH, KOH, and NH4OH - worst of the hydroxides CaO forms clumps on eye Organics Lacrimators Systemics Naphthalene, phenothiazine, methanol

Nervous System: 

Nervous System Fluoroacetate Triethyltin Hexachlorophene Lead Thallium Tellurium Organomercury Acrylamide Carbon disulfide n-Hexane Organophosphates DDT 2,4,5-T

Liver Toxicity: 

Liver Toxicity Acute Carbon Tetrachloride Chloroform Trichloroethylene Tannic acid Kepone Biotransformation Carbon tetrachloride to chloroform Chronic Cirrhosis Ethyl alcohol Aflatoxin B1 Carcinogen - Vinyl chloride Carbon tetrachloride Arsenic Aflatoxin B1

Kidney Toxicity: 

Kidney Toxicity Heavy metals Hg, Cd, Cr, Au, Pb, Ag Halogenated compounds Carbon tetrachloride, 2,4,5-T, ethylene dibromide Miscellaneous Ethylene glycol, carbon disulfide

Bone Marrow: 

Bone Marrow Arsenic Lead Bromine Methyl Chloride Ionizing Radiation Benzene

Blood Components: 

Blood Components Clotting Aspirin Benzene Tetrachlorethane White Blood Cells Naphthalene Benzene Phosphorous Red Blood Cells Arsine Warfarin Pb Oxygen Transport Carbon Monoxide

Emergency Procedures: 

Emergency Procedures Spills Dial ext 7300 Give location of spill Emergency Equipment Spill pillows and blankets in each laboratory Showers and Eyewashes Use whenever part of body is contaminated

Characteristics of HAZARDOUS MATERIAL Releases: 

Characteristics of HAZARDOUS MATERIAL Releases Unplanned Uncontrolled

Characteristics of HAZMAT Release: 

Characteristics of HAZMAT Release Quantity larger than normal Identification of material may be in doubt

Characteristics of HAZMAT Release: 

Characteristics of HAZMAT Release Causes injury to humans and/or the environment

Vapor Releases: 

Vapor Releases Indications odor complaints of headaches, dizziness, nausea and/or vomiting puddles film or sheen on surfaces

Preventing A Spill: 

Preventing A Spill Unsafe Storage and Handling Storing above shoulder level Storing incompatibles together Overloading containers Failing to label correctly Container deterioration oozing from bottom discoloration along seams salt crystals forming valves not closing tightly

Spill Steps: 

Spill Steps 1. Get Away Move upwind of the Spill if outside Put distance between you and the Spill Tip up containers on your way out - if possible Shut down machinery- if possible 2. Identify what you saw Once away from the spill, think about what you saw. What was the color, smell, or appearance of the chemical Was it a liquid, gas, or solid DON’T go back to take a second look

Spill Steps: 

Spill Steps 3. Get Help Notify the Site Safety Officer that a release has occurred. Follow the call procedures that have been developed for an unplanned release. Practice evacuation procedures ahead of time. Emergency procedures should be followed in accordance with UT Tyler Emergency Guidelines 4. Seal Off Area-Alert Others Notifiy ALL personnel near you that there is a release. Call EH&S at 7011. Call Campus Police and Physical Plant.

Spill Steps: 

Spill Steps 6. Identify the Hazards What are the possible chemicals involved? Review the site characterization to determine the hazards involved. 5. Look for Injuries DO NOT attempt to go back into a spill area remove any victims until help arrives unless you have the right PPE. Help with decontamination of all personnel (including yourself). Showers & Eyewashes Removal of contaminated clothing

Spill Steps: 

Spill Steps 7. Prepare a Plan of Action Review any MSDSs. List equipment needed. List personnel involved. List action each person will take. No work until everyone agrees on the Plan of Action. 8. Get Proper Equipment & Materials Review Action Plan Assemble equipment.

Spill Steps: 

Spill Steps 9. Contain Spill Stop the Source Tip barrel so hole is up Overpack barrel Stop the Spread Use booms/pads Cover drains Surround drains 10. Clean Up Spill Use Compatible Clean-Up Material Collect all clean-up material Collect all disposable PPE Document all activity

Spill Clean-Up Kits: 

Spill Clean-Up Kits Contain & “Soak Up” booms, ‘pigs’ pillows, sheets, rolls Neutralizing powders Acids, bases, Solvents Drain mats Non-sparking shovel/ scraper Drum patches Tape, spill signs PPE gloves splash goggles splash coveralls foot coverings Waste containers appropriate for type of waste Mop, bucket, sponges, detergent



Mission of EH&S: 

Mission of EH&S To provide value-added, customer service that helps UT-Tyler Comply with applicable EH&S laws and regulations; Eliminate or reduce its exposure to accidental and financial loss; and Protect against accidents which could cause injury to faculty, staff, students and visitors, or impede its ability to provide a safe and quality educational experience.



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