What Do You Know About Confined Spaces?

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Questions: 10 | Attempts: 897 | Updated: Mar 21, 2023

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What Do You Know About Confined Spaces? - Quiz

Space which can be below or above ground is known as confined spaces. You can find it in the workplace or factories such as utility vaults, tanks, water supply towers, aircraft wings, manholes, pump stations etc. Take this quiz to test your knowledge about the hazards, risk factors, safety and principles of confined spaces. So, let's try out the quiz. All the best!

Questions and Answers

1.

Confined spaces include, but are not limited to (select all that apply):
- A.
  
  Tanks
- B.
  
  Storage Bins
- C.
  
  A properly shored trench.
- D.
  
  Silos
- E.
  
  The job connex.
Correct Answer(s)
A. Tanks
B. Storage Bins
C. A properly shored trench.
D. Silos

Explanation
The correct answer includes tanks, storage bins, a properly shored trench, and silos. Confined spaces are areas that have limited entry and exit points and are not designed for continuous occupancy. Tanks, storage bins, silos, and a properly shored trench can all be considered confined spaces as they have limited access and may pose risks such as lack of ventilation, potential for engulfment, or hazardous atmospheres. The job connex, however, is not typically considered a confined space as it is a portable storage container and does not have the same inherent risks as the other options.

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2.

Select the true statement:
- A.
  
  Any conditions making it unsafe to remove an entrance cover shall be eliminated after the cover is removed.
- B.
  
  Before an employee enters a permit confined space, the internal atmosphere shall be tested for oxygen content, potential toxic air contaminants, flammable gases and vapours.
- C.
  
  Ventilation equipment shall be readily available for permit and non-permit confined spaces.
- D.
  
  Confined space shall be treated as non-permit until deemed permit.
- E.
  
  A and B
Correct Answer
B. Before an employee enters a permit confined space, the internal atmosphere shall be tested for oxygen content, potential toxic air contaminants, flammable gases and vapours.

Explanation
This statement is true because before an employee enters a permit confined space, it is necessary to test the internal atmosphere for various factors such as oxygen content, potential toxic air contaminants, flammable gases, and vapors. This is done to ensure the safety of the employee and to identify any potential hazards that may be present in the confined space.

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3.

When confined space entrance covers are removed, the opening shall be guarded prior to removal by (select all that apply);
- A.
  
  Railing and/or Signage
- B.
  
  Temporary Cover
- C.
  
  Temporary Barrier
- D.
  
  OSHA Regulated Board Stretchers
- E.
  
  Proper testing activities to ensure compliance.
Correct Answer(s)
A. Railing and/or Signage
B. Temporary Cover
C. Temporary Barrier

Explanation
When confined space entrance covers are removed, it is important to guard the opening to prevent accidents or unauthorized access. Railing and/or signage can be used to clearly indicate the danger and restrict entry. A temporary cover can be placed over the opening to prevent falls or objects from falling into the space. A temporary barrier can also be used to physically block access to the opening. OSHA regulated board stretchers and proper testing activities are not directly related to guarding the opening and are therefore not applicable in this situation.

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4.

IDLH is an acronym for:
- A.
  
  Inconspicuous Deadly Levels of Hydrogen
- B.
  
  Immediately Dangerous to Life and Heath
- C.
  
  Identified Dangerous Levels of Hydrogen
- D.
  
  Interior Depth by Length and Height
- E.
  
  International Deadly Limits of Hydrogen
Correct Answer
B. Immediately Dangerous to Life and Heath

Explanation
IDLH is an acronym used to describe the condition where a substance poses an immediate threat to life or health. It is used to identify hazardous situations where exposure to a certain substance or environment can cause severe harm or death. This term is commonly used in occupational safety and health to determine the level at which workers must be protected from exposure to hazardous materials.

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5.

Signage for permit confined space shall be considered proprietary and confidential.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement is false because signage for permit confined space should not be considered proprietary and confidential. It is important for the signage to be visible and easily understood by anyone who may enter the confined space, including employees, contractors, and emergency responders. Making the signage proprietary and confidential would hinder the communication and understanding of the potential hazards and safety precautions associated with the confined space.

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6.

It is our responsibility to understand the precautions and procedures concerning confined spaces and ensure we ALL go home safe.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement emphasizes the importance of everyone understanding the precautions and procedures related to confined spaces in order to ensure everyone's safety. It implies that each individual has a responsibility to be knowledgeable and cautious in such environments. Therefore, the correct answer is "True."

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7.

A non-permit space may become a permit space if hazards are introduced.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
If hazards are introduced into a non-permit space, it can become a permit space. This means that the space now poses potential dangers such as hazardous atmospheres, engulfment hazards, or other conditions that could be harmful to workers. As a result, specific safety protocols and permits must be implemented before anyone can enter the space to ensure their protection. Therefore, the statement "A non-permit space may become a permit space if hazards are introduced" is true.

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8.

A rescue plan (select all that apply):
- A.
  
  Needs to be known by all employees.
- B.
  
  Ensures that employees practice making permit space rescues at least every 6 weeks by removing dummies, manikins, or actual persons.
- C.
  
  Must be developed prior to entering confined space and should consult local emergency response services when developing a rescue plan.
- D.
  
  Will comply with OSHA if you use the last jobs rescue plan.
- E.
  
  In some cases is optional due to the scope of work being performed.
Correct Answer(s)
A. Needs to be known by all employees.
C. Must be developed prior to entering confined space and should consult local emergency response services when developing a rescue plan.

Explanation
A rescue plan needs to be known by all employees to ensure that everyone is aware of the procedures and protocols in case of an emergency. It must be developed prior to entering a confined space and should consult local emergency response services to ensure that the plan is comprehensive and aligned with local regulations and resources.

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9.

What needs to be available to employees at ALL TIMES?
- A.
  
  OSHA Standards
- B.
  
  RFI’s
- C.
  
  Traffic Control Devices
- D.
  
  MSDS
- E.
  
  Caution Tape
Correct Answer
D. MSDS

Explanation
Employees need to have access to Material Safety Data Sheets (MSDS) at all times. MSDS provide important information about hazardous substances in the workplace, including their properties, potential hazards, and safety precautions. Having access to MSDS ensures that employees can make informed decisions about handling and using these substances safely.

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10.

An Attendant (select all that apply):
- A.
  
  Can work on several things and monitor the workers periodically.
- B.
  
  May only be distracted by relevant operations that have been determined to be high risk.
- C.
  
  Is able to maintain communication with workers.
- D.
  
  Is responsible for signing in and out employees who enter and exit the space.
- E.
  
  Is trained to summon the emergency response team (if necessary).
Correct Answer(s)
C. Is able to maintain communication with workers.
D. Is responsible for signing in and out employees who enter and exit the space.
E. Is trained to summon the emergency response team (if necessary).

Explanation
The Attendant is responsible for maintaining communication with workers, signing in and out employees who enter and exit the space, and summoning the emergency response team if necessary. They can work on several things and periodically monitor the workers, but they may only be distracted by relevant operations that have been determined to be high risk.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Nov 12, 2009

Quiz Created by
Kiewitsafe

What Do You Know About Confined Spaces?

Confined spaces include, but are not limited to (select all that apply):

Select the true statement:

When confined space entrance covers are removed, the opening shall be guarded prior to removal by (select all that apply);

IDLH is an acronym for:

Signage for permit confined space shall be considered proprietary and confidential.

It is our responsibility to understand the precautions and procedures concerning confined spaces and ensure we ALL go home safe.

A non-permit space may become a permit space if hazards are introduced.

A rescue plan (select all that apply):

What needs to be available to employees at ALL TIMES?

An Attendant (select all that apply):