Confined Space Exam Test
Questions 100% Solved
Confined space - Answers -✔✔ Large enough to enter, limited means of entry and exit,
are not designed for continuous human occupancy
Atmospheric hazards - Answers -✔✔ One of the most critical elements affecting
confined space operations, These hazards may include toxic gases, flammable gases,
oxygen deficiency, or all three.
OSHA Standard 1910.146, Permit-Required Confined Spaces - Answers -✔✔ A
hazardous atmosphere as an atmosphere that may expose employees to the risk of
death, incapacitation, impairment of ability to self-rescue (that is escape unaided from a
permit space), injury, or acute illness.
Lower flammable limit (LFL) - Answers -✔✔ If the mixture is below the lower flammable
limit (LFL), it is considered too lean to burn
Upper flammable limit (UFL) - Answers -✔✔ If the mixture is above the upper
flammable limit (UFL), it is considered too rich to bum.
Flash point - Answers -✔✔ The flash point of a material is the temperature at which an
ignitable mixture is created. Flash points are determined in a laboratory and can vary
slightly depending on the method used.
21% O2 - Answers -✔✔ Normal
19.5% O2 - Answers -✔✔ OSHA definition of oxygen deficient
17% O2 - Answers -✔✔ Some muscular impairment, increased respiratory rate
12% O2 - Answers -✔✔ Dizziness, headache and rapid fatigue
9% O2 - Answers -✔✔ Unconscious
6% O2 - Answers -✔✔ Dead within a few minutes
Engulfment - Answers -✔✔ the materials within the space is a common physical
hazard, liquid or finely divided (flowable) solid substance can surround and trap a
person
, Permit required confined space - Answers -✔✔ an area that meets the three criteria for
confined spaces and that has one or more of the following characteristics
Characteristic 1: permit required confined space - Answers -✔✔ Contains or has the
potential to contain a hazardous atmosphere
Characteristic 2: permit required confined space - Answers -✔✔ Contains a material
that has the potential for engulfing an entrant
Characteristic 3: permit required confined space - Answers -✔✔ Has an internal
configuration such that an entrant could be trapped or asphyxiated by inwardly
converging walls or by a floor that slopes downward and tapers to a smaller cross
section
Characteristic 4: permit required confined space - Answers -✔✔ Contains any other
recognized serious safety or health hazard
Entry permit - Answers -✔✔ A written document that outlines what will occur within the
space, including the type of work, the expected hazards, and required precaution.
Attendant - Answers -✔✔ An individual who is stationed outside one or more permit-
required confined spaces and monitors the people within and the conditions in the area
around the space and may not enter the space for any reason.
Authorized Entrants - Answers -✔✔ The people who will enter the space to complete
an assigned job have roles and responsibilities. They are trained to be aware of the
hazards, controls, roles, responsibilities, needed equipment, and other requirements for
safe entry.
Confined space supervisor - Answers -✔✔ someone must be placed in charge of the
program during permit-required entries and has a variety of tasks and obligations to
fulfill.
Role 1 of Confined space supervisor - Answers -✔✔ Know the hazards that may be
faced during entry, including the mode, signs or symptoms, and consequences of the
exposure. They must inform the attendant and entrant of the hazards.
Role 2 of Controlled space supervisor - Answers -✔✔ Verify, by checking that the
permit has been filled out properly, that all tests specified by the permit have been
conducted, and that all procedures and equipment required by the permit are in place
before allowing entry
Role 3 Confined space supervisor - Answers -✔✔ Terminate the entry and cancel the
permit as required.
Questions 100% Solved
Confined space - Answers -✔✔ Large enough to enter, limited means of entry and exit,
are not designed for continuous human occupancy
Atmospheric hazards - Answers -✔✔ One of the most critical elements affecting
confined space operations, These hazards may include toxic gases, flammable gases,
oxygen deficiency, or all three.
OSHA Standard 1910.146, Permit-Required Confined Spaces - Answers -✔✔ A
hazardous atmosphere as an atmosphere that may expose employees to the risk of
death, incapacitation, impairment of ability to self-rescue (that is escape unaided from a
permit space), injury, or acute illness.
Lower flammable limit (LFL) - Answers -✔✔ If the mixture is below the lower flammable
limit (LFL), it is considered too lean to burn
Upper flammable limit (UFL) - Answers -✔✔ If the mixture is above the upper
flammable limit (UFL), it is considered too rich to bum.
Flash point - Answers -✔✔ The flash point of a material is the temperature at which an
ignitable mixture is created. Flash points are determined in a laboratory and can vary
slightly depending on the method used.
21% O2 - Answers -✔✔ Normal
19.5% O2 - Answers -✔✔ OSHA definition of oxygen deficient
17% O2 - Answers -✔✔ Some muscular impairment, increased respiratory rate
12% O2 - Answers -✔✔ Dizziness, headache and rapid fatigue
9% O2 - Answers -✔✔ Unconscious
6% O2 - Answers -✔✔ Dead within a few minutes
Engulfment - Answers -✔✔ the materials within the space is a common physical
hazard, liquid or finely divided (flowable) solid substance can surround and trap a
person
, Permit required confined space - Answers -✔✔ an area that meets the three criteria for
confined spaces and that has one or more of the following characteristics
Characteristic 1: permit required confined space - Answers -✔✔ Contains or has the
potential to contain a hazardous atmosphere
Characteristic 2: permit required confined space - Answers -✔✔ Contains a material
that has the potential for engulfing an entrant
Characteristic 3: permit required confined space - Answers -✔✔ Has an internal
configuration such that an entrant could be trapped or asphyxiated by inwardly
converging walls or by a floor that slopes downward and tapers to a smaller cross
section
Characteristic 4: permit required confined space - Answers -✔✔ Contains any other
recognized serious safety or health hazard
Entry permit - Answers -✔✔ A written document that outlines what will occur within the
space, including the type of work, the expected hazards, and required precaution.
Attendant - Answers -✔✔ An individual who is stationed outside one or more permit-
required confined spaces and monitors the people within and the conditions in the area
around the space and may not enter the space for any reason.
Authorized Entrants - Answers -✔✔ The people who will enter the space to complete
an assigned job have roles and responsibilities. They are trained to be aware of the
hazards, controls, roles, responsibilities, needed equipment, and other requirements for
safe entry.
Confined space supervisor - Answers -✔✔ someone must be placed in charge of the
program during permit-required entries and has a variety of tasks and obligations to
fulfill.
Role 1 of Confined space supervisor - Answers -✔✔ Know the hazards that may be
faced during entry, including the mode, signs or symptoms, and consequences of the
exposure. They must inform the attendant and entrant of the hazards.
Role 2 of Controlled space supervisor - Answers -✔✔ Verify, by checking that the
permit has been filled out properly, that all tests specified by the permit have been
conducted, and that all procedures and equipment required by the permit are in place
before allowing entry
Role 3 Confined space supervisor - Answers -✔✔ Terminate the entry and cancel the
permit as required.
