OSH Exam 3

The most frequent serious violations for Subpart Z have to do with what aspect?

1. Hazard Communication-written program
2. Hazard Communication- information and training
3. Hazard Communication- MSDS for each chemical used
4. Hazard Communication- Training initially and for new hazards
5. Hazard Communication- MDDS's readily accessib

Subpart Zs major sections include:

A. 1910.1000 Air Contaminants
B. 1910.1001-1096 Specific regs for a number of toxic substances
i. Asbestos
ii. Lead
iii. 1910.1030 Bloodborne Pathogens
iv. Many others
C. 1910.1200 Hazard Communication

Earlier this semester, we had a deeper look at two of the above standards, what are they?

Bloodborne pathogens
Haz Com

Hierarchy of controls is required to be determined and implemented regarding Air Contaminants. We have discussed the Hierarchy of Controls in other standards throughout the semester, please name them, in order. Why is the order significant?

- Engineering controls
- Administrative control
- Personal protective equipment

In the example from Z-1 table it shows Carbon Monoxide has a Permissible Exposure Limit as an 8 hour Time Weighted Average of 50 ppm. Can 50 ppm of
CO ever be exceeded legally? Explain.

Yes, the gas is allowed to fluctuate between the TWA and the ceiling. The time it can exceed is in the notes along with the ceiling limit.

In a Z-2 table, to what do the notes refer?

-8 hour TWA's
If a substance has both ceiling and peak limits, the peak now becomes the level never to be exceeded.
Any employee's exposure level exceeding the
ceiling but under the peak are required to comply with the margin note

Z-3 tables contains Permissible Exposure Limits for Mineral Dusts including silica, coal and nuisance dusts.


Silica (SiO2) is a basic component of sand, quartz and granite rock.


With regard to Lead the __________________ means employee exposure, without regard to the use of respirators, to an airborne concentration of lead of 30 micrograms per cubic meter of air (30 ug/m(3)) averaged over an 8-hour period.

Action level

The most frequent serious violations include general PPE, eye and face protection, and PPE Hazard Assessment, but the top two have to do with what aspect of PPE?

Medical evaluation to determine employee's ability to use respirator
Written respiratory protection program

A ____________________ is required for employers to assess the workplace and determine if hazards are present (or are likely to be present). Then the employer selects PPE that will protect affected employees from the hazards identified. Finally the employ

Hazard Assessment

Training for Subpart I, PPE. Each employee who is required to wear PPE must be trained covering at least 5 topics. Name 3.

-(i)When PPE is necessary;
-(ii)What PPE is necessary;
-(iii)How to properly don, doff, adjust, and wear PPE;
-(iv)The limitations of the PPE; and,
-(v)The proper care, maintenance, useful life and
disposal of the PPE.

Name a circumstance when re-training an employee would be required.

When the employer has reason to believe that any affected employee who has already been trained does not have the understanding and skill required by paragraph (f)(2) of this section

List three hazards that when exposed, employees would be required to wear eye or face protection.

-Flying particles,
-Molten metal,
-Liquid chemicals, acids or caustic liquids,
-Chemical gases or vapors, or potentially injurious
light radiation

List three of the required elements of a Respiratory Protection Program.

-Written program
-Worksite-specific procedures
-Required elements:
�Fit testing
�Medical evaluations
�Care and maintenance
�Procedures for respirator selection
�Procedures for routine & emergency use

If respirators are not required, employers may allow voluntary use of them but only if employees are provided with the information contained in ____________.

-Appendix D
-Establish and implement those elements of a written respiratory protection program* necessary to ensure that any employee using a respirator voluntarily is medically able to use that respirator
-That the respirator is cleaned, stored, and mai

What organization does OSHA most often incorporate by reference that you will find stamped on acceptable head protection, eye protection and foot protection?

American National Standard for Personal Protection-Protective Footwear, Protective eyewear, protective headwear

What are the three defining characteristics of a confined space?

� Limited or restricted means of entry or exit
� Large enough and so configured that an employee can bodily enter and perform work
� Not designed for continuous human occupancy

When is a confined space entry considered to have occurred?

Permit system required for entry into a confined space that may contain a hazard "immediate dangerous to life or health"
As soon as any part of the entrant's body breaks the plane of an opening into the space

What are the criteria that make a confined space a permit-required confined space?

- contains or has potential to contain a
hazardous atmosphere
- contains a material that has potential for engulfing an entrant
- has an internal configuration that could trap or asphyxiate an entrant
- contains any other recognized serious safety or heal

In addition to hazardous atmospheres, engulfment and entrapment, list 2 other hazards that may be encountered in a confined space.

stored energy
mechanical hazards

What are the conditions that make an atmosphere hazardous?

� Oxygen-enriched or oxygen-deficient conditions
� Flammable or explosive conditions
� Toxic conditions
� Tests must be performed in that order

Under what conditions may a confined space be reclassified as a non-permit confined space?

If testing and inspection during entry demonstrate that hazards within a permit space have been eliminated, then space can be reclassified as non-permit as long as hazards remain eliminated
If permit space poses no actual or potential atmospheric hazards

Identify three typical confined spaces.

� tanks
� silos
� pits
� manholes
� trenches

What are the gases and acceptable ranges that are often measured with 4 gas meters in confined spaces during entry?

1. Oxygen (O2) 19.5% - 23.5%
2. Flammability Less than 10% of the Lower Flammability Limit (LFL)
3. Carbon Monoxide (CO) Less than 35 ppm
4. Hydrogen Sulfide (H2S) Less than 10 ppm
5. Other substances Less than Permissible Exposure Limit (PEL)

All confined spaces are hazardous and entry should be allowed only by permit.


What are the duties of a confined space entry attendant?

Know hazards that may be faced during entry
� Verify by checking that appropriate entries have been made on entry permit before allowing entry to begin
- all tests conducted
- all procedures and equipment in place
Terminate entry and cancel permit as requ

What clause would OSHA use to cite an employer for hazards related to ergonomics issues?

General Duty Clause

When talking about Ergonomics, what does MSD stand for?
A. Material Safety Data B. Musculoskeletal Disorder C. Mild Symptom Danger

Musculoskeletal Disorder

Which parts of the body can be afflicted with MSD?

Back, neck, shoulders, arms, legs, elbow and knee joint, hands, wrists, fingers, thumbs, feet, and toes

Name 2 common MSDs.

�Carpal tunnel
�Low back pain
�Eye strain
�Trigger finger

Name 5 risks lead to MSDs.

�Repetitive motions
�Forceful exertions
�Awkward postures
�Contact stress
(pressure points)

What is anthropometry?

Measurement of human dimension

How might you use anthropometric data for your employer?

Design for the extreme
Design for an adjustable rang
Design for the average
Example: measuring body dimensions
restrict workers from certain positions that can be harmful

At what posture is the body strongest?

neutral posture

Describe three different types of work and the difference in standing work heights that should be considered.

Light: elbow height
Precision: moderate height
Heavy: knuckle height

. Describe how the contraption in the photo might reduce injuries? (photo of a spring machine thing with boxes on it)

The contraption allows the worker to pick up the boxes without having to strain his back to pick them up. It is level with the rest of his body and causes him to be in less awkward positions. There is plenty of foot room, his elbows are neutral, and there

Math Problem:
Died: 0
Days away: 10
restriction or transfer: 3
Other recordables: 40
Non recordable:

Do not log nonrecordable
53 x 200,000= 10,600,000/by number of hours given