1.1
Health HazardsinConstructionPart 2
Developed by:
Construction Safety Council
4100 Madison Street
Hillside, IL 60162
2.2
Chemical Health Hazards
Learning Goals:
Be able to explain what a chemical health hazard is and how construction workers might be exposed to these hazards.
Define important terms used to describe chemical hazards in the workplace.
Overview the health effects of these hazards on the human body.
3.3
Important Terms
Gases, vapors, fumes, dusts/fibers & mists
Routes of entry
Units of concentration
Respirable
Breathable Air
Simple asphyxiant
Chemical asphyxiant
Gas & vapor density
Carcinogens
Toxic & highly toxic
4.4
Important Terms
Reproductive toxins
Irritants
Corrosives
Sensitizers
Hepatotoxins (liver toxins)
Nephrotoxins (kidney toxins)
Neurotoxins (nerve toxins)
Hematopoietic system (blood forming system)
Synergistic Effect
Your Right to Know
Material Safety Data Sheet (MSDS)
5.5
Chemical Health Hazards
Gas
Vapor
Fume
Dust/Fiber
Mist
6.6
Routes of Entry
Inhalation
Ingestion
Absorption
Injection
Alveoli
7.7
Units of Concentration
(ppm) Parts per Million
(mg/m³) Milligrams per Cubic Meter of Air
(µg/m³) Micrograms per Cubic Meter of Air
(f/cc) Fibers per Cubic Centimeter of Air
8.8
Part Per Million (ppm)
55 gallons
Four (4) eye drops in a 55 gallon drum is equivalent to 1 part per million (1 ppm).
9.9
Milligrams per Cubic Meter of Air (mg/m³)
Empire State Building
X 1000 = 1 mg/m³
Approximate Volume = 1,000,000 m³
10.10
Micrograms per Cubic Meter of Air (µg/m³)
X 50 (artificial sweetener packets)
= 50 µg/m³
(OSHA PEL for Lead).
Empire State Building
X 1 = (1 µg/m³)
Approximate Volume = 1,000,000 m³
11.11
Fibers per Cubic Centimeter (f/cc)
Fiber – Means a particulate form of asbestos, 5 micrometer (µm) or longer, with a length-to-width ratio of at least 3 to 1.
12.12
OSHA PEL for Asbestos
Average amount of air a worker breathes during an 8-hour shift (ten refrigerators)
0.1 f/cc is equivalent to the number of fibers on the tip of a pencil mixed in with the volume of ten refrigerators.
13.13
Respirable Particles
Human hair is between 80 – 120 microns (µm) in diameter.
Respirable dust is less than 10 microns (µm) in diameter!
14.14
Respirable Particles
0
1
Meter (m)
0.01
.001
.000001
Millimeter (mm)
Centimeter (cm)
Micron (µm)
Human Hair (80 – 120 µm)
Respirable Dust, e.g., Lead, Silica & Asbestos (<10 µm)
A lower case 'o' when printed in Times New Roman size 10 (1mm).
o
1 cm
1 m
Large Dog
15.15
16.16
17.17
High Efficiency Particulate Air (HEPA)
Capable of filtering 0.3 micrometer particles with 99.97% efficiency.
100
18.18
Gases
Examples of gases found in construction:
Oxygen – used for welding and cutting.
Acetylene – used for welding and cutting.
Propane – used for heating & fuel.
Carbon Dioxide – used as an inert gas and can be found naturally in sewers.
Methane – the principle component of natural gas and found in earth deposits.
19.19
Gases
Examples of gases found in construction:
Hydrogen Sulfide –break down of organic matter and can be found naturally in sewers.
Carbon Monoxide – highly toxic and produced by the incomplete combustion of fuels.
Welding Gases – The welding arc can produce ozone, phosgene and carbon monoxide gases.
Diesel Exhaust – Nitrogen Dioxide.
20.20
How do Gases Affect the Body?
Who’s at Risk?
Group Discussion…
What hazardous gases are present on your job?
21.21
Gases
Important questions concerning gases:
What is the gas density?
What is the flammable range (LFL) of the gas?
How toxic is the gas (PEL, TLV, REL & IDLH)?
Is the gas a simple asphyxiant or a chemical asphyxiant?
22.22
Gas Density
Helium .062
Gas Density
(Air = 1)
Propane 1.55
Carbon Dioxide 1.53
23.23
Breathable Air
24.24
Never use pure oxygen for ventilation, cooling or cleaning!
27.27
Confined Space Hazards
Confined Space Hazards…
Always check for hazardous atmospheres!
28.28
29.29
Exposure to simple asphyxiants is like suffocating in a plastic bag.
30.30
Temporary Heating Devices & Asphyxiation
Fresh air must be supplied in sufficient quantities.
OTI Southwest Education/elcoshimages.org
31.31
When using portable heaters, special care must be taken to provide sufficient ventilation in order to ensure a safe and healthful environment.
32.32
Chemical Asphyxiant
Carbon Monoxide – “The Silent Killer”
Hydrogen Sulfide – Rotten Eggs
33.33
Carbon Monoxide (CO)
Odorless, colorless and toxic gas.
Found in combustion exhaust.
34.34
Good example of generator exhausts being vented to the outside.
35.35
36.36
Hydrogen Sulfide
Colorless, very poisonous, flammable gas.
Characteristic foul odor of rotten eggs.
Bacterial breakdown of organic matter in the absence of oxygen.
Found in swamps and sewers (manholes).
39.39
Diesel Exhaust
Ensure proper ventilation.
Do not idle engines excessively.
See manufacturers MSDS.
40.40
Respiratory Protection for Exposure to Gases
Acid gas cartridges [White]
Organic vapor (OV) acid gas cartridges [Yellow]
Multi vapor gas cartridges [Olive Green]
3M™ Organic Vapor/Acid Gas Respirators 5000 Series
41.41
End of Service Life Indicator (ESLI)
The indicator background changes to a different color as the service life shortens.
The indicator completely changes color when the service life of the cartridge is expired.
42.42
Vapors
Examples of vapors found in construction:
Gasoline – used for fuel.
Organic Solvents – used as paint thinners (toluene & turpentine) & glue solvents (acetone & methyl ethyl ketone)
Nail polish remover, an organic solvent (usually acetone) has a distinctive vapor odor.
43.43
How are Vapors Formed?
Liquid reaches a certain temperature – Flash Point.
At Flash Point – vapor is released into the air.
The amount of vapor is dependent on the Vapor Pressure.
Water needs to be heated (212ºF) for vapors to be formed.
Some solvents give off vapor at or below room temperature (72ºF).
44.44
Vapors
What is the vapor density?
What is the flash point of the liquid to which vapor is produced?
What is the vapor pressure?
What is the flammable range (LFL) of the vapor?
How toxic is the vapor (PEL, TLV, REL & IDLH)?
45.45
Vapor Density
Vapor Density
(Air = 1)
Gasoline 3 – 4
Turpentine 4.69
46.46
Flash Point
Flash Point is the minimum temperature at which a liquid gives off a vapor in sufficient concentration to ignite.
47.47
How do Solvents Affect the Body?
Dissolve skin fats and oils.
Skin dryness, cracking, redness, and blisters
Local health effect
Vapors can be inhaled.
Central nervous system damage.
Systemic health effect
48.48
Vapor Pressure
Toxic solvent with a relative low vapor pressure
Toxic solvent with a relative high vapor pressure
Fewer Vapors
(Less Hazardous)
More Vapors
(More Hazardous)
49.49
Hazardous (Dangerous) Vapor Pressure
Vapor pressure is less than 1mmHg; it is not likely to evaporate (not an inhalation hazard).
Vapor pressure greater than 50 mmHg; it is likely to evaporate (is an inhalation hazard).
50.50
Group Discussion…
What hazardous vapors are present on your job?
51.51
Respiratory Protection for Exposure to Vapors
Organic vapor (OV) cartridge [Black]
Organic vapor (OV) acid gas cartridges [Yellow]
Multi vapor gas cartridges [Olive Green]
North 7700 Series Half-Face Respirator equipped with organic vapor acid gas cartridge (yellow)
52.52
Fumes
Examples of fumes found in construction:
Welding Fumes
Asphalt
Naphtha – “Coal Tar” a brown or black thick liquid that comes from coal; it’s a skin irritant known to cause cancer.
Lead Fumes
Hexavalent Chromium (CrVI)
53.53
Group Discussion…
Welding fumes are some of the most hazardous exposures a construction worker may experience.
54.54
How do fumes affect the body?
Irritate the skin, eyes and nose; causing an immediate (acute) health effect.
Fumes can easily pass from the lungs into the blood stream; resulting in a systemic health effect.
Fumes are respirable size particles that are inhaled and can enter the blood stream.
55.55
Welding Fumes
Metal Fume Fever [Zinc (Galvanized Metal)]
Siderosis [Iron, Iron Oxide (Rust)]
Manganism (Manganese)
56.56
Remember… Using proper engineering controls will help prevent diseases associated with welding and cutting, always use them!
Courtesy of Sentry Air Systems, Inc. Houston, TX USA
Model 300 Welding Fume Extractor
www.sentryair.com
57.57
Asphalt Fumes
Made from petroleum.
Headache
Skin rash
Sensitization
Throat and eye irritation
Cough
Suspect carcinogen
No specific OSHA standards.
Must wear appropriate PPE.
58.58
Naphtha (Coal Tar)
By-product of coal.
Acne
Allergic skin reactions
Know to cause cancer
Photosensitivity – A condition in which a person becomes more sensitive to light.
59.59
Lead Fumes
Lead poisoning
Loss of appetite
Nausea &vomiting
Stomach cramps & constipation
Fatigue
Joint or muscle aches, anemia
Decreased sexual drive.
60.60
Plumbers Melting Pot (Lead)
Plumbers melt lead in special melting pots.
Cast iron joints and fittings.
Temperature must never exceeds 900°F.
Use electric pot with temperature gage.
Fuel (propane)
Melting Pot
Electric Melting Pot
61.61
Hexavalent Chromium
(CrVI) compounds
Dyes, paints, inks, and plastics.
Stainless steel & chromium metal.
Health effects:
Lung cancer
Irritation or damage to the nose, throat, and lungs.
Irritation or damage to the eyes and skin.
62.62
Respiratory Protection for Exposure to Fumes
63.63
Dusts & Fibers
Examples of Dusts & Fibers found in construction:
Crystalline Silica
Asbestos
Metal Dusts
Lead-Based Paint
Fiberglass
64.64
Dusts & Fibers
Important questions concerning dusts & fibers:
What is the particle size of the dust and/or fiber?
How toxic is the dust and/or fiber (PEL, TLV, REL & IDLH)?
How does the dust or fiber affect the body?
Is the dust or fiber regulated by OSHA?
65.65
How do dust & fibers affect the body?
Respirable dust
Dusts
&
Fibers
66.66
Body’s Defense against Dust
Mucous
Cilia
67.67
68.68
Crystalline Silica
Quartz
Sand
Gravel
Clay
Granite
Other forms of rock
Smaller particles can be inhaled deep into the lungs - cause damage.
69.69
Silicosis
Disease of the lungs due to the breathing of dust containing crystalline silica particles.
NO cure!
70.70
Concrete cutting with no engineering control or PPE!
71.71
Silicosis
Silicotic Lungs
Normal Healthy Lungs
72.72
Crystalline Silica
Exposures to crystalline silica dust include:
Concrete cutting.
Sandblasting for surface preparation.
Crushing and drilling rock and concrete.
Masonry and concrete work (e.g., building and road construction and repair).
Mining & tunneling.
Cement worker wearing a full-face piece negative pressure air purifying respirator.
Demolition work.
Cement and asphalt pavement manufacturing.
73.73
74.74
Asbestos
Exposure during demolition or remodeling jobs.
Found in some taping compounds, asbestos cement, pipes and floor tiles.
Measured in fibers per cubic centimeter (ff/cc).
29 CFR 1926.1101 Asbestos
75.75
Asbestosis
Asbestosis and mesothelioma
Rare form of cancer that develops from the protective lining that covers many of the body's internal organs.
Worker with chronic health problems; he needs oxygen.
76.76
Lead-Based Paint Dust
“White Lead" (a lead carbonate)
“Red Lead" (a lead oxide)
77.77
EPA Certified Lead Renovator
All work performed under the supervision of certified lead renovators.
Post signs and warn occupants of buildings.
Barricade off work area and contain lead dust.
Clean all objects and surfaces.
78.78
Fiberglass Insulation
Provide general or local exhaust ventilation systems.
Wear PPE.
Maintain PEL for nuisance dusts (15 mg/m³).
79.79
80.80
Mists
Examples of mists found in construction:
Oil mist
Paint mist
Pesticides
Aerosols
81.81
How do mists affect the body?
Mists
Skin Desig-
nation
X
82.82
Respiratory Protection for Exposures to Mists
Filters designated as a “P” or “R” if the mist contains oil.
AOSafety 95110 Paint Spray Respirator
Organic Vapors
Paints
Lacquers
Enamels
Detachable Prefilter
83.83
Chemical Health Hazard Categories
Carcinogen
Corrosive
Toxic & Highly Toxic
Irritant
Sensitizer
Affects a Target Organ
84.84
Reproductive Toxins
Mutation
Permanent change of the genetic material in a cell.
Teratogen
Malformations of an embryo or fetus.
Benzene (mutagen)
Cadmium and compounds (fertility & teratogen)
Chloroform (mutagen)
Lead and compounds (fertility, teratogen & mutagen)
Mercury and compounds (fertility & teratogen)
85.85
Synergistic Effect
Two or more hazardous materials are present at the same time.
Smoking paralyses the body’s natural defense – cilia.
86.86
Your Right to Know!
OSHA – Hazard Communication Standard (HCS)
Chemical manufacturer responsibilities
Labels
MSDS
87.87
Contractors Guide to HCS Compliance
Become familiar with the OSHA’s Hazard Communication Standard (29 CFR 1910.1200)
Prepare and implement a Hazard Communication Program.
Assign a competent person to implement all aspects of the Program.
Identify all hazardous chemicals in the workplace.
Labels and other forms of warning must be in place.
Safety Data Sheets (SDSs) available.
Employee information and training conducted.
88.Safety Data Sheet (SDS)
Identification
Hazard(s) Identification
Composition/Information on Ingredients
First-aid Measures
Fire-fighting Measures
Accidental Release Measures
Handling and Storage
Exposure Controls/Personal Protection
Physical & Chemical Properties
Stability & Reactivity
Toxicological Information
Ecological Information
Disposal Considerations
Transport Information
Regulatory Information
Other Information
88
89.89
Physical Health Hazards
Learning Goals:
Be able to explain what a physical health hazard is and how construction workers might be exposed to these hazards.
Define important terms used to describe physical hazards in the workplace.
Overview the health effects of these hazards on the human body.
91.91
Physical Health Hazards
Temperature Extremes
Too hot or too cold.
Noise
Irreversible hearing loss.
Repetitive Motion
Cumulative Trauma Disorder
Radiation
Discomfort and eye damage (non-ionizing)
Cancer (ionizing),
92.92
Heat
Heat Cramps
Electrolyte imbalance caused by sweating.
Too much and too little salt.
Do not rely on thirst to replenish fluids.
Heat Exhaustion
Headache
Nausea
Fainting
Heat Stroke
Hot, dry skin
High temperature
93.93
94.94
Sun
Cover up
Use sunscreen with a sun protection factor (SPF) of at least 30.
Wear a wide brim hard hat.
Wear UV-absorbent sunglasses (eye protection).
Limit exposure
95.95
Safe Work Practices (Heat)
Drink water frequently.
Wear light-colored, loose-fitting, breathable clothing.
Take frequent short breaks in cool shade.
Eat smaller meals before work activity.
Avoid caffeine and alcohol or large amounts of sugar.
Work in the shade.
Consult doctor regard medications.
Know limitations of PPE.
96.96
Cold
Frostbite
Hypothermia
Wear several layers of clothing.
Wear gloves and a helmet liner.
Wear warm footwear with one or two pairs of warm socks.
Wear a scarf or face mask.
Take frequent short breaks in a warm shelter.
Drink warm, sweet beverages.
Eat warm, high calorie food such as pasta dishes.
97.97
Workers exposed to cold must dress appropriately for the weather.
98.98
When the body is unable to warm itself, serious cold-related illnesses and injuries may occur, and permanent tissue damage and death may result.
Hypothermia can occur when land temperatures are above freezing or water temperatures are below 98.6°F/37°C. Cold-related illnesses can slowly overcome a person who has been chilled by low temperatures, brisk winds, or wet clothing.
LOW TEMPERATURE + WIND SPEED + WETNESS = INJURIES & ILLNESS
THE COLD STRESS EQUATION
Little Danger
(Caution)
Freezing to Exposed Flesh within 1 Hour
Danger
Freezing to Exposed Flesh within 1 Minute
Extreme Danger
Freezing to Exposed Flesh within 30 Seconds
Adapted from: ACGIH® Threshold Limit Values, and Physical Agents Biohazard Indices, 1998 – 1999.
U.S. Department of Labor
Occupational Safety and Health Administration
OSHA 3156
1998
30°F / -1.1°C –
20°F / -6.7°C –
10°F / -12.2°C –
0°F / -17.8°C –
-10°F / -23.3°C –
-20°F / -28.9°C –
-30°F / -34.4°C –
-40°F / -40°C –
-50°F / -45.6°C –
Wind Speed (MPH)
0 10 20 30 40
99.99
Occupational Noise
Noise is measured using sound level meters
Decibel (abbreviated dB) unit used to measure the intensity of a sound.
Standard Sound Level Meter
Quest Technologies
100.100
Yelling
80 – 85 dB
Normal Conversation
60 – 65 dB
101.101
What is A–Weighted?
A-weighted response most resembles the sensitivity of the human ear.
102.102
Tinnitus
“Ringing in the ears”
Damage to tiny sensory hair cells in the inner ear.
103.103
The Inner Ear
Cochlea
Ear Drum
104.104
Cochlea
105.105
How Noise Damages the Ear
Like walking on grass.
106.106
107.107
Occupational Noise Exposures (29 CFR 1926.52)
OSHA Requirement…
When employees are subjected to sound levels exceeding those listed in Table D-2, feasible* administrative or engineering controls must first be utilized. If such controls fail to reduce sound levels within the levels of the table (D-2), ear protective devices must be provided and used.
108.108
Engineering & Administrative Controls for Noise
Enclosures (operator cabs)
Routine maintenance on tools and equipment.
Lubrication to reduce friction.
Acoustical enclosures & sound absorbing materials.
Use rubber mallets to erect and dismantle scaffolding and formwork.
Rotate workers
Post warning signs.
Train all employees on how to properly wear hearing protective devices.
109.109
110.110
111.111
112.112
Hearing Conservation Program
Monitoring of employee noise exposures.
Engineering, work practice, and administrative controls.
Signs and barriers to warn workers of high noise levels).
Individually fitted hearing protector.
Employee training and education.
Baseline and annual audiometry.
Procedures for preventing further occupational hearing loss.
Recording Keeping
113.113
114.114
Recommendations for Protecting Hearing…
Know your hazard.
Trust the annual audiogram.
Select hearing protection that is right for you.
Wear your hearing protection right.
To test the fit, cup your hands over your ears, then release.
115.115
Noise Reduction Rating (NRR)
A hearing protector's ability to reduce noise.
The greater the NRR, the better the noise reduction.
Listed on the hearing protector box.
Noise
Reduction
Rating
29
DECIBELS
(When used as directed)
THE RANGE OF NOISE REDUCTION RATINGS FOR EXISTING HEARING PROTECTORS IS APPROXIMATELY 0 TO 30
(HIGHER NUMBERS DENOTE GREATER EFFECTIVENESS)
NMC Company Model Earplug
116.116
Proposed Noise Reduction Rating (NRR)
Minimally trained users (the lower number) vs. Highly motivated, trained users (the higher number).
Reflects A-weighted attenuation – no adjustment necessary.
NRR
Noise
Reduction
Rating
0
10
20
30
40
50
21
Possible for most
individually trained users
to achieve or exceed
34
Possible for a few motivated
proficient users to achieve or
exceed
Noise Reduction (dB) When Worn As Directed
117.117
OSHA NRR Adjustment Calculation
For example…
Ear plugs with a listed NRR of 29…
29 – 7 = 22
Noise
Reduction
Rating
29
DECIBELS
(When used as directed)
THE RANGE OF NOISE REDUCTION RATINGS FOR EXISTING HEARING PROTECTORS IS APPROXIMATELY 0 TO 30
(HIGHER NUMBERS DENOTE GREATER EFFECTIVENESS)
NMC Company Model Earplug
NRR – 7
120.120
Dual Hearing Protection
WARNING!
Make sure that any plugs used with double protection do not have a cord; it will interfere with the fit of the earmuffs and not provide added protection.
121.121
Cumulative Trauma Disorders (CTDs)
Repetitive motions
Forceful exertions
Awkward postures
Static postures
Mechanical compression of soft tissues
Fast movement
Vibration
Lack of sufficient recovery
127.127
Preventing CTDs
Hand tools with smooth, rounded edges and long handles.
Job layout - Tools, parts, and equipment should be easy to reach.
Job rotation or reassignment.
Regular breaks
Adjusting physical factors in the work environment.
The ability to stretch and move around.
128.128
Ergonomics
Study of fitting the job to the person…
Fits your hand.
Allows a good grip.
Takes less effort.
Does not require you to work in an awkward position.
Does not dig into your fingers or hand.
Comfortable and effective.
Paladin Tools 1300 Series
Ergonomically-designed handles for effortless operation.
129.129
Pre-Work Stretch & FlexTrunk & Low Back
130.130
Pre-Work Stretch & FlexLegs
131.131
Pre-Work Stretch & FlexUpper Body
132.132
Pre-Work Stretch & FlexForearm Stretch
133.133
Pre-Work Stretch & Flex Open Hand Stretch
134.134
Ionizing Radiation
Alpha particles
Beta particles
Gamma rays
X-Rays
Symbol for
Radiation
135.135
Stopped by a sheet of paper
Stopped by a layer of clothing or by a few millimeters of a substance such as aluminum
Stopped by several feet of concrete or a few inches of lead
136.136
Non-Ionizing Radiation
Infrared Radiation (IR)
Microwave (MW) & Radiofrequency (RF)
Extremely Low Frequency (ELF)
Symbol for
Infrared Radiation (IR)
Symbol for
Microwave (MW) & Radio (RF)
Symbol for
Magnetic Field
137.137
Ultraviolet Radiation (UV)
Welding & cutting creates radiant energy that must be protected against (see requirements for filter lens shade number).
138.138
Ultraviolet Radiation (UV)
139.139
Ultraviolet Radiation (UV)
NIOSH/John Rekus/elcoshimages.org
Bad Work Practice – not wearing a shirt will result in sunburn and skin damage.
Bad Work Practice – welder unprotected from ultraviolet radiation.
140.140
Melanoma
Type of skin cancer.
Leading cause of death from skin disease.
Excessive exposure to sun light.
141.141
Protect Against UV Radiation
Avoiding working in the sun.
Wear protective clothing and (hats).
Apply sunscreens
142.142
Biological Health Hazards
Learning Goals:
Be able to explain what a biological health hazard is and how construction workers might be exposed to these hazards.
Define important terms used to describe biological hazards in the workplace.
Overview the health effects of these hazards on the human body.
143.143
Important Terms
Fungi (mold)
Histoplasmosis
Hantavirus
Blood Borne Pathogens
Universal Precautions
HIV
Hepatitis – HBV & HCV
Rabies
144.144
Biological Health Hazards
When working in health care facilities.
Accumulation of animal waste and the presence of rodents, insects and birds.
During demolition and remolding of old structures.
During clearing operations and the removal of plants, trees and other foliage.
Landscaping
145.145
Fungi (Mold)
Molds are organized into three groups:
Allergenic
Pathogenic
Toxigenic
146.146
How do Molds Affect the Body?
Spores small enough to be airborne.
Considered respirable.
Produce toxic agents known as mycotoxins.
Mold
147.147
Worker exposed to fungi (mold) – wearing personal protective equipment.
148.148
Histoplasmosis
Disease caused by inhaling the spores of a fungus called Histoplasma capsulatum (H. capsulatum).
Fungus seems to grow best in soils having high nitrogen content, especially those enriched with bird manure or bat droppings.
My droppings can
make you sick!
149.149
Hantavirus Pulmonary Syndrome
Disease spread by rodents that is similar to the flu.
Virus is in urine and feces.
150.150
Respiratory Protection for Exposures to Fungi (Mold)
Avoid breathing in mold or mold spores!
Approved Filtering Facepiece Respirator (Disposable) – any combination of N, R & P with efficiency 95, 99 or 100.
Half Mask, Elastomeric, Air Purifying Respirator – any combination of N, R & P with efficiency 95, 99 or 100.
151.151
Bloodborne Pathogens
Hepatitis B Virus (HBV)
Hepatitis C Virus (HCV)
Human Immunodeficiency Virus (HIV)
Symbol for
Bloodborne Pathogen
152.152
How Bloodborne Pathogens are Spread
For an infection to occur, all four conditions must be present.
Present
Route of Entry
Susceptible
Quantity
153.153
Universal Precautions
Concept of bloodborne disease control which requires that all human blood and fluids be treated as if known to be infectious.
Protect yourself against bloodborne pathogens – always wear gloves.
154.154
Preventing Disease
Frequent hand washing will help to prevent sickness and disease.
155.155
Poisonous Plants
Poison Ivy
Poison Oak
Poison Sumac
Others?
156.156
Poisonous & Infectious Animals
Rabies
What are, if any, the poisonous & infectious animals on your job-site?
157.157
Special Considerations for Construction
Host Employer
Controlling Contractor
Sub-Contractors
Remember… Cheap is good, until someone gets hurt!