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Module BOSH Chapter 3 - INDUSTRIAL HYGIENE and
Learning Activities
Mechanical Engineering (Nueva Vizcaya State University)
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lOMoARcPSD|38345334
Republic of the Philippines
NUEVA VIZCAYA STATE UNIVERSITY
Bayombong, Nueva Vizcaya
INSTRUCTIONAL MODULE
IM No. 3 : EEN70-1STSEM-2021-2022
College: Engineering
Campus: Bambang
DEGREE
PROGRAM
SPECIALIZATION
YEAR LEVEL
I.
Bachelor of Science in
Electrical Engineering
Electrical
Third Year
COURSE NO.
N70
COURSE TITLE
TIME FRAME
Basic Occupational Safety and Health
6 Hrs WK NO.
4-6 IM NO. 03
UNIT TITLE/CHAPTER TITLE
CHAPTER III – INDUSTRIAL HYGIENE
II.
LESSON TITLES
1. Industrial Hygiene
III.
LESSON OVERVIEW
This lesson deals with the Industrial Hygiene principles.
IV.
DESIRED LEARNING OUTCOMES
At the end of this lesson, the students should be able to :
1. Understand Industrial Hygiene.
V.
LESSON CONTENT
1. INDUSTRIAL HYGIENE
What is Industrial Hygiene?
Industrial hygiene is the science of anticipating, recognizing, evaluating, and controlling workplace
conditions that may cause workers' injury or illness. Industrial hygienists use environmental monitoring
and analytical methods to detect the extent of worker exposure and employ engineering, work practice
controls, and other methods to control potential health hazards.
What is a Worksite Analysis?
A worksite analysis is an essential first step that helps an industrial hygienist determine what jobs and
work stations are the sources of potential problems. During the worksite analysis, the industrial
hygienist measures and identifies exposures, problem tasks, and risks. The most effective worksite
analyses include all jobs, operations, and work activities. The industrial hygienist inspects, researches,
or analyzes how the particular chemicals or physical hazards at that worksite affect worker health. If a
situation hazardous to health is discovered, the industrial hygienist recommends the appropriate
corrective actions.
What Are Some Examples of Job Hazards?
To be effective in recognizing and evaluating on-the-job hazards and recommending controls, industrial
hygienists must be familiar with the hazards' characteristics. Major job risks can include air
contaminants, and chemical, biological, physical, and ergonomic hazards.
Importance of Industrial Hygiene
Industrial hygiene is essential because it helps protect employees from several types of injuries and
illnesses, including:
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copy righted works included in this material may be reproduced for educational purposes
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lOMoARcPSD|38345334
Republic of the Philippines
NUEVA VIZCAYA STATE UNIVERSITY
Bayombong, Nueva Vizcaya
INSTRUCTIONAL MODULE
IM No. 3 : EEN70-1STSEM-2021-2022
a. Nonfatal illnesses: Skin, lung and gastrointestinal diseases like anthrax are common occupational
hazards in agricultural operations, and blood-borne illnesses like hepatitis B and C are common
occupational hazards in medical settings and laboratories. Industrial hygiene can help prevent the
transmission of these diseases and many others.
b. Respiratory conditions: Respiratory conditions like chronic bronchitis, asbestosis and
pneumonitis are common occupational hazards, especially in industries like mining where inhaling
dust is common. Industrial hygiene can help by mandating the use of personal protective
equipment (PPE) and improving working conditions.
c.
Skin diseases: Skin diseases like dermatitis, eczema, rashes and blisters are common in
industries where workers' skin comes into contact with hazardous chemicals. Industrial hygiene can
help by mandating PPE and offering guidelines about how chemicals are used, labeled and stored
in the workplace.
d. Poisoning: Poisoning can occur if workers accidentally ingest toxic chemicals like pesticides,
herbicides, formaldehyde or cleaning agents. Workers might also absorb those chemicals through
their skin. Industrial hygiene can help by mandating how poisons are used, labeled and stored.
e. Hearing loss: Hearing loss can occur when employees are exposed to high-decibel sounds in
environments like airports or at construction and mining sites where detonations occur. Industrial
hygiene can help by mandating personal PPE and offering guidelines about noise exposure in the
workplace.
f.
Repetitive stress injuries: Repetitive stress injuries occur when employees perform the same
motions many times throughout the workday. Industrial hygiene can help by offering guidelines
about correct posture and lifting techniques and mandating breaks for employees engaged in
repetitive tasks.
Creating a Successful Industrial Hygiene Program
Creating a successful industrial hygiene program takes some work, but with careful, dedicated planning
and execution, it can make the working environment much safer and healthier.
Risk Assessments
One of the first steps in creating a successful industrial hygiene program is risk assessment. Risk
assessments typically involve observing employees at work and determining their exposure to hazards
during different tasks.
One standard method of risk assessment involves breaking employee tasks down into no more than 10
discrete steps. Management personnel can then assess the hazards they see, making sure to evaluate
different types of hazards — environmental, biological, chemical, physical, ergonomic — and
evaluate both routine and non-routine tasks.
Worksite Analysis
Creating a successful industrial hygiene program also involves a worksite analysis. During a worksite
analysis, a professional industrial hygienist comes to the worksite to evaluate its exposures and
controls. The industrial hygienist will measure exposure levels, assess task performance and analyze
the workplace's risks. The worksite analysis will likely also involve sampling and testing of the air and
work surfaces to evaluate contaminant levels.
A quality worksite analysis should include all operations and work activities and should give the
industrial hygienist ample opportunity to inspect, research and analyze. The industrial hygienist will
recommend corrective action upon discovering any hazardous situation at the worksite.
What to Include
What should a facility include in its plans for a new industrial hygiene program? Some fundamental
components of a new program include these:
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copy righted works included in this material may be reproduced for educational purposes
only and not for commercial distribution.”
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lOMoARcPSD|38345334
Republic of the Philippines
NUEVA VIZCAYA STATE UNIVERSITY
Bayombong, Nueva Vizcaya
INSTRUCTIONAL MODULE
IM No. 3 : EEN70-1STSEM-2021-2022
a. Identification of a person or team responsible for program oversight and industrial hygiene
monitoring.
b. Preliminary exposure assessments, including industrial hygiene testing and sampling measures.
c.
Identification of hazard areas.
d. Identification of possible control measures.
e. Selection and procurement of respiratory protection and other PPE as needed.
f.
Thorough documentation of identified hazards.
g. Thorough documentation of health and safety protocols to be followed.
h. Training plan and materials.
Communicating the Results
After a facility has obtained results of its hazard assessment and has a plan in place to address them,
the next step is to communicate the results to employees. Clear communication at this stage helps
managers and their teams get on the same page. It helps workers understand what the new protocols
require of them and how the new protocols will help keep them safe and healthy.
Planning for Change
Of course, conditions in the workplace are always evolving, and hazards may change. A facility may
start using new chemicals or machinery, or it may introduce a new process that puts more physical
strain on employees' bodies throughout the day. A facility should design its new industrial hygiene
program with enough built-in flexibility to accommodate new hazards and develop effective new
controls.
Controls for Industrial Hygiene Hazards
When it comes to industrial hygiene controls, the "hierarchy of controls" that NIOSH outlines is a useful
tool in risk assessment. The hierarchy of controls offers guidelines for how to control a hazard,
beginning with the most conservative controls that reduce hazards and working toward controls that
protect against the hazard if it cannot be minimized:
1. Elimination
This step involves eliminating the hazard, if possible. For example, a workplace might stop using a
chemical or eliminate the use of radiation in its operations.
2. Substitution
This step involves replacing the hazard with a safer alternative. For example, a workplace might switch
from toxic chemicals to non-toxic ones to protect its employees. Or they might upgrade an outdated
piece of equipment with one offering more guards and safety features.
3. Engineering Controls
This step involves isolating employees from the hazard through structural changes. A workplace might
install a protective shield around a loud piece of machinery or radioactive equipment. Creating confined
workspaces and installing robust ventilation systems are also examples of effective engineering
controls.
4. Administrative Controls
This step involves using administrative policies to change how employees work. Management staff can
rotate employee assignments or adjust the techniques employees use. Administrators can also
implement training procedures to give employees the tools and knowledge they need to protect
themselves.
5. Personal Protective Equipment
NVSU-FR-ICD-05-00 (081220
In accordance with Section 185, Fair Use of a Copyrighted Work of Republic Act 8293, the
copy righted works included in this material may be reproduced for educational purposes
only and not for commercial distribution.”
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lOMoARcPSD|38345334
Republic of the Philippines
NUEVA VIZCAYA STATE UNIVERSITY
Bayombong, Nueva Vizcaya
INSTRUCTIONAL MODULE
IM No. 3 : EEN70-1STSEM-2021-2022
This step involves having workers wear PPE to protect themselves during exposure to workplace
hazards. PPE like gloves, masks, face shields, coveralls, steel-toed boots, flame-resistant clothing,
harnesses and respirators can all be useful, depending on the specific work environment.
(Open the file INDUSTRIAL HYGIENE powerpoint file in your TEAMS at Class Materials.
Read and Understand its contents.)
VI.
LEARNING ACTIVITIES
ACTIVITY No. 3
Copy and answer the following questions in your own handwriting on a bond paper then picture it then
send thru online (email add: engr.mmf06@gmail.com or MSTeams).
Answer the following questions. Copy in your own handwriting the questions and selections
then encircle the correct letter of your answer.
Name : __________________________________________
1. Industrial hygiene is a science that _____, _____, _____, and _____ the workplace conditions that
may cause injuries or illnesses to employees.
a.
b.
c.
d.
analyzes, identifies, measures, and locates
anticipates, recognizes, evaluates, and controls
accumulates, gathers, stores, and isolates
isolates, identifies, anticipates, and stores
2. Which of the following are NOT examples of industrial hygiene hazards in the workplace?
a.
b.
c.
d.
Dust, fumes, vapors, carbon monoxide
Bacteria, fungi, lifting, holding, gases, fumes
Flour, salt, oil, and water
Helium, argon, radiation, extreme noise
3. What is the science that studies the poisonous, or toxic, properties of substances?
a. Virology
b. Toxicology
c. Epidemiology
d. Pharmacology
4. Symptoms of this condition are fatigue, weakness, blurred vision, dizziness and headache?
a. Heat stress
b. Dehydration
c. Heat exhaustion
d. Heat stroke
5. What type of hazard in the workplace represents noise greater than 85 dB?
a. Chemical hazard
b. Physical hazard
c. Biological hazard
d. Ergonomic hazard
NVSU-FR-ICD-05-00 (081220
In accordance with Section 185, Fair Use of a Copyrighted Work of Republic Act 8293, the
copy righted works included in this material may be reproduced for educational purposes
only and not for commercial distribution.”
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lOMoARcPSD|38345334
Republic of the Philippines
NUEVA VIZCAYA STATE UNIVERSITY
Bayombong, Nueva Vizcaya
INSTRUCTIONAL MODULE
IM No. 3 : EEN70-1STSEM-2021-2022
6. Which occupations are most likely to be exposed to biological hazards?
a. Occupations related to plants and animals
b. Occupations related to food processing and packing
c. Health workers
d. All of the above
VII.
EVALUATION (Note: Not to be included in the student’s copy of the IM)
VIII.
ASSIGNMENT
ASSIGNMENT No. 3
Name : ________________________________________
Copy and Answer the following questions : handwritten then picture and send thru online (email add:
engr.mmf06@gmail.com or MSTeams)
1. What is the economic effect of absenteeism in a workplace?
2. What does an Industrial Hygienist do?
IX.
REFERENCES
Alli, Benjamin O. Fundamental Principles of Occupational Safety and Health. Second Edition. 2008.
ISBN 978-92-2-120454-1. International Labour Office, Geneva.
e-resources
https://www.osha.gov/Publications/OSHA3143/OSHA3143.htm
https://www.studyblue.com/notes/note/n/industrial-hygiene-quiz-one/deck/21564843
http://legacy.senate.gov.ph/republic_acts/ra%2011058.pdf
http://www.oshc.dole.gov.ph/images/NOSHCongress/4.-SHAPING-FUTURE-ENGINEERS-TOBECOME-OSH-CHAMPIONS.pdf
https://www.ibhsolutions.com/blog/what-is-occupational-health/
https://fitforwork.org/blog/identifying-workplace-hazards/
https://www.ccohs.ca/oshanswers/hsprograms/hazard_risk.html
https://ajph.aphapublications.org/doi/pdf/10.2105/AJPH.25.4.415
NVSU-FR-ICD-05-00 (081220
In accordance with Section 185, Fair Use of a Copyrighted Work of Republic Act 8293, the
copy righted works included in this material may be reproduced for educational purposes
only and not for commercial distribution.”
Downloaded by Christian Glenn Ayuste (christianglenn.ayuste@evsu.edu.ph)
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