Confined Spaces

Question 1

What are the criteria for a permit required confined space?

Answer 1

(1) Contains or has a potential to contain a hazardous atmosphere;
(2) Contains a material that has the potential for engulfing an entrant;
(3) Has an internal configuration such that an entrant could be trapped or asphyxiated by inwardly converging walls or by a floor which slopes downward and tapers to a smaller cross-section; or
(4) Contains any other recognized serious safety or health hazard.

Question 2

What is the recertification timeframe for confined space certification?

Answer 2

Every 3 years.

Question 3

What is the OSHA standard for permit-required confined spaces?

Answer 3

1910.146

Question 4

What is the definition of an oxygen deficient atmosphere?

Answer 4

An atmosphere containing less than 19.5 percent oxygen by volume

Question 5

What is the definition of an oxygen enriched atmosphere?

Answer 5

An atmosphere containing more than 23.5 percent oxygen by volume

Question 6

Three main confined space facts

Answer 6

• Many of the fatalities were would-be rescuers who
jumped into the confined space without thinking.
• In 78% of the accidents, there was either no or poor
ventilation.
• In every case, there was no air testing or monitoring.

Question 7

The entrant and attendant in all confined space operations must:

Answer 7

Have current CPR and First Aid certifications.

Question 8

The person responsible for overseeing and
determining if acceptable entry conditions are
present at a permit space where entry is planned is
called the

Answer 8

Entry Supervisor

Question 9

The standby attendant will continue to monitor

atmosphere levels and record every ______ minutes

Answer 9

20

Question 10

Approximately _____ percent of those who die in
confined space accidents are attempting to rescue
others

Answer 10

65 to 70

Question 11

LFL stands for:

Answer 11

Lower flammable limit

Question 12

The Comcast maximum oxygen level is ______%.

Answer 12

22.5%

Question 13

What form must be completed prior to entering a
permit-required confined
space?

Answer 13

Comcast Confined Space Entry Permit

Question 14

How long are entry permits required to be kept on

file?

Answer 14

1 year

Question 15

A confined space is one that:

Answer 15

• is large enough and so configured that an employee can bodily enter and perform assigned work

• has limited or restricted means for entry or exit (for
example, tanks, vessels, silos, storage bins, hoppers,
vaults and pits are spaces that may have limited means of entry)

• is not designed for continuous employee occupancy

Question 16

A non-permit confined space is one that:

Answer 16

Does not contain, or with respect to atmospheric hazards, have the potential to contain any hazard capable of causing death or serious physical harm. These spaces do not require an entry permit and do not require specific confined space training.

Question 17

OSHA 1910.268 o(3)

Answer 17

Allows technicians to enter a jointly occupied manhole

while working alone.

Question 18

Comcast requires ___ ___________ for all permit required confined space operations.

Answer 18

two technicians

Question 19

There are three technician roles associated with confined

space operations:

Answer 19

• Entrant
• Attendant
• Supervisor

Question 20

Hydrogen Sulfide must be lower than

Answer 20

10 PPM

Question 21

Carbon Monoxide must be lower than

Answer 21

33 PPM

Question 22

The basic safety hazards you need to be aware of

include:

Answer 22

• Communication problems
• Entry and exit considerations
• Physical conditions

Question 23

Hazardous atmospheres can be divided

into four distinct categories:

Answer 23

• Flammable
• Toxic
• Irritant and/or Corrosive
• Asphyxiating

Question 24

The following entry and exit details must be considered:

Answer 24

• Type of confined space to be entered
• Access to the entrance
• Number and size of openings
• Barriers within the space
• Occupancy load (if any)
• Time requirement for exiting in event of fire or vapor
incursion
• Time required to rescue injured entrant(s)

Question 25

The normal atmosphere is composed approximately of:

Answer 25

20.9% oxygen, 78.1% nitrogen, and 1% argon with small amounts of various other gases.

Question 26

REMEMBER “OCT”-

Answer 26

Oxygen
Combustible and flammable vapors
Toxic gases and vapors.

Question 27

When testing the atmosphere, check for gases in the

following order:

Answer 27

1. Oxygen
2. Combustible and flammable vapors
3. Toxic gases and vapors

Question 28

All confined space atmospheres shall be pre-tested at a minimum of three (3) levels within the space prior to entry.

Answer 28

top, middle, and bottom

Question 29

Once a satisfactory air sample has been taken, ventilate the space for a minimum of __ _______ before allowing the entrant to enter.

Answer 29

15 minutes

Question 30

All rescue personnel must practice making permit space

rescues at least once every

Answer 30

12 months

Question 31

There is a danger of asphyxiation or suffocation if the

oxygen level falls below:

Answer 31

19.5%

Question 32

Confined space training is required for all:

Answer 32

Authorized entrants and attendants

Supervisors and rescue personnel

Authorized entrants, attendants, and rescue personnel

Question 33

The acceptable oxygen level range for confined space

set by OSHA is:

Answer 33

19.5% to 23.5%

Question 34

As an authorized entrant you should know the

following about the hazards of a given space:

Answer 34

What they are, how you can be exposed, signs, symptoms and consequences of exposure

Question 35

A flammable/explosive atmosphere could contain:

Answer 35

Methane or acetylene gases

Solvents or fuel vapors

Coal or grain dust

Question 36

The oxygen level in a permit-required confined space

can be reduced by:

Answer 36

Use by another operation

Displacement by another gas

Question 37

A permit-required space is:

Answer 37

A confined space that has or may contain one of
the following hazards: atmospheric, engulfment,
design or other serious safety/health hazard

Question 38

You should exit the space when:

Answer 38

Your work is complete

An evacuation alarm is sounded or an evacuation
order s given by the attendant or the entry supervisor

You recognize a warning sign/symptom of exposure or a prohibited condition