CSN Confined Space Inert Theory TEST ONLY

What is the industry standard for working safely in inert confined spaces within the petroleum industry?

American Petroleum Institute (API) standard RP 2217A
Association of Petroleum Installations (API) standard RP 2217A
American Petroleum Institute (API) standard RP 2201
Asia-Pacific Petroleum Institute (API) standard RP 2217A

When using supplied air through an umbilical system, this type of respiratory protection does not provide protection from?

Dust
Gases absorbed through the skin
Gases absorbed through the lungs
Mist

In the context of inert entry operations, what is the necessary PPE required when entering an exclusion zone (RPZ)?

Use a gas detector to test the atmosphere
Tyvek coveralls, harness and cartridge type respirator
As per site standards plus an air supplied respirator
Coveralls, gloves, safety bump hat, and safety glasses

When planning to make entry into an inert confined space in a petrochemical environment, who is responsible for checking the isolation on reactors or vessels?

The supervisor together with the plant operator
The site safety officer
The entire inert team working in the confined space
All of these

When carrying out inert confined space entry, what is the duration of a 2-liter egress bottle filled to 150bar when a worker is breathing normally (60 L/min)?

3 minutes
5 minutes
7 minutes
10 minutes

Why is it important to conduct a face seal test on the lockable helmet before use in inert entry and operations?

Such a test is not needed if the helmet has been tested or used on the same day
To ensure the quality of the air has not changed
To see if there is enough pressure going into the mask
To see if the mask or exhalation valve is leaking

What circumstances would the rescuer be able to use the same air supply as the IP in an inert confined space rescue?

When the IP has no breathing problems and is only trapped or unable to exit themselves
When the cylinder pressure show enough available air
When there is no other system available
None of these justify the using the same air.

What is the danger of adding nitrogen (N₂) into a confined space?

Nitrogen displaces oxygen
Nitrogen is toxic
Nitrogen is a fire hazard
No danger, nitrogen is inert

Where is the greatest risk of fire/an explosion on an inert confined space?

No risk as there is no oxygen present
At any opening where nitrogen is exiting the confined space
Inside the confined space if LELs rise above 10%
All of the above

In the context of inert entry and operations, which of the following is CORRECT regarding EEL’s?

EEL’s must be connected to the operator at all times when working
EEL’s must only be used in an emergency
EEL’s can be connected to the primary air rack
Once the EEL is connected, workers can carry on working

Why do we need to check the flow rates before using a lockable helmet for inert entry and operations?

To ensure that there is enough oxygen in the air
To check for toxic gases in the air
To check the pressure of the air
To check if the air flow is blocked or restricted

What is the main reason for using the lockable helmet instead of a regular soft face mask for inert entry operations?

To prevent the wearer from removing the helmet
To provide better head protection from falling objects
Wearing a helmet prevents air from leaking out
To provide better hearing protection from noise

An inert entry breathing apparatus supply system must consist of what items?

Soft face mask and supplied breathing air system
Breathing air supply, air console, twin airline, communications, lockable helmet and EEL
A fully SCBA system with an egress bottle and instrinsically safe radio
Breathing air supply, air console, twin airline, communications, lockable helmet, EEL and egress bottle

What is the role of the panel/cylinder operator in an inert entry operation?

Checks the pressure on the panel and maintains communications
Monitors oxygen, LEL and toxic gas concentration in the confined space
Walks around the site to ensure other work activities are running smoothly
Wears BA and go helps at the manway

An exclusion zone is required around any release or opening that could release nitrogen to atmosphere of how many meters?

3m
6m
9m
12m

Which of the following is the BEST way to know what gases are present inside a confined space?

Ask the client/contractor what is inside the confined space
Conduct a gas test based on information on the equipment specific process
Look a gas test result from previous years
Use your sense of smell to identify if there are gases present

What is the single main purpose of a Breathing air system?

Ensure that work area is safe to enter
To provide a safe clean respirable supply of breathing air
To verify previous gas test results
All of the above

The ITRA qualification best suited for confined space operators/rescuers using anti-panic helmets and umbilical systems often in nitrogen purged environments is:

ITRA Level 1 Confined Space Responder (C1)
ITRA Level 1N Confined Space Inert (C1N)
ITRA Level 2 Confined Space Technician (C2)
ITRA Level 3 Confined Space Advanced (C3)

What are practices for ensuring good hygiene when working in confined spaces?

Cleaning PPE in accordance with manufacturers instructions
Assess the risk of contaminants to ascertain if specialist decontamination is required
Wash stations should be available and used often when exiting
All of these

What is not a good example of a confined space?

Air conditioning duct
Empty and cleaned milk vat
A swimming pool
Bottom of an elevator shaft

What is not a good example of a confined space?

Grain silo
Sewer pipe
Crawl space under building
Walk in refrigerator

What statement is FALSE in regards to confined space rescue according to best practice?

It is common for (untrained) rescuers to become victims in confined space incidents.
A recommended confined space response team should be at least 4 persons, comprised of team leader, safety officer, entrant (rescuer), attendant.
The use of ventilation and exhaust systems to bring the atmosphere to within safe entry limits is within scope of an ITRA Level 1 qualified responder.
A two person rescue team without any other support is sufficient, providing the team leader acts as safety and attendant and holds the ITRA Level 3 Confined Space Advanced qualification.

What is NOT an appropriate choice for communications within and to outside a confined space?

Rope tugs
Whistle signals
Satellite phone
Hand signals

What statement is FALSE in regards to gas detection equipment and practices for confined space rescue?

Gas Testing is short term and not continuous; Gas Monitoring is continuous
For initial entry for rescue, the concentration of flammable contaminant should be above 10% of its LEL.
Gas detectors should only be used when they are “in calibration” i.e. within the periodic testing regime carried out by an authorised service centre.
PID (Photo-Ionization Detectors) are able to detect concentrations of VOCs (Volatile Organic Compounds) that may be too low for a multi-gas detectors.

In regards to atmospheric hazards found in confined spaces, what statement is FALSE?

Oxygen deficiency can occur as a result of rusting/oxidization
Oxygen deficiency can occur as a result of concrete curing (hardening)
Carbon Dioxide (CO2) has a distinctive “rotten egg” smell
Hydrogen Sulphide (H2S) has a distinctive “rotten egg” smell

In regards to confined space rescue protocols, what statement is best practice?

When responding to a confined space rescue, entry documentation is required only if the victim is unconscious.
When responding to a confined space rescue, entry documentation is not required.
The document required to be completed prior to entry into a confined space is known as a “hot work permit”
When responding to a confined space rescue, entry documentation is required.

In regards to using electrical equipment within confined spaces, which statement is FALSE?

ATEX is a European Directive for the marking of explosion proof equipment.
NFPA Atmospheric Hazard Classifications include: Classes, Divisions and Groups
Cameras and cell phones can be used in intrinsically unsafe atmospheres providing they are a water proof container or are waterproof themselves
None of these

What statement is correct in regards to the effect on oxygen levels on the human body?

20.9% no adverse effect, 19.5% deterioration of night vision, 14% rapid fatigue, 8% mental failure, 6% difficult in breathing/death
20.9% no adverse effect, 19.5% first signs of hypoxia, 14% rapid fatigue, 8% mental failure, 2% difficult in breathing/death
24% tachycardia/fast heart rate, 20.9% no adverse effect, 19.5% loss of smell, 14% rapid fatigue, 8% mental failure, 6% difficult in breathing/death
20.9% no adverse effect, 19.5% deterioration of night vision, 16% disorientation, 8% fainting, 6% difficult in breathing/death

What is the best example of an environmental hazard in confined spaces?

Oxygen Deficiency
Entrapment
High temperature
Vertigo

What is the best example of a physical or mechanical hazard in confined spaces?

Oxygen Deficiency
Engulfment
Low temperature
Claustrophobia

What is the best example of an atmospheric hazard in confined spaces?

Oxygen deficiency
Engulfment
High temperature
Claustrophobia

Which statement is correct in regards to respiratory protection for confined space rescue?

Negative pressure respiratory protection relies on the wear to pull air through the device. This can create additional strain on the wearer, so medical evaluations are important.
The wearer of a combination cartridge respirator finds it difficult to draw air through the device (but not difficult to breather when the respirator is removed). They should check or replace the cartridge as part of fault finding.
Respirators should only be used as a “last line of defence” when other control systems, such as adequate ventilation or hazard containment, are not feasible.
All of these

What statement is correct in regards to respiratory protection for confined space rescue?

Filtering facepiece (disposable respirators) are suitable for gases and vapors.
Full face cartridge respirators provide positive pressure.
Half face respirators with a multi-hazard cartridge provides protection against oxygen deficient atmospheres.
Filtering facepiece (disposable respirators) are suitable only to some particulates.

Which statement is correct in regards to respiratory protection in confined space rescue?

Self Contained Breathing Apparatus are suitable for entering conditions that the respiratory risk is not known
Escape sets are suitable for carrying out rescue operations (as used by the rescuers)
SCUBA sets are always a better alternative to Supplied Air Respirators
Facial beards do not reduce the effectiveness of respiratory protection

What instrument is appropriate for testing for a range of gases simultaneously?

A
B
C
D

What is the best description of a confined space?

Has limited entry and egress
Is not intended for human occupancy
May contain an engulfment hazard
All of these

An oxygen (O₂) deficient atmosphere is generally described where oxygen by volume is?

Higher than 23.5%
At 21%
Between 20% and 20.9%
Below 19.5%

Which gases are potentially explosive?

A
B
C
D

What stratification of gases is correct?

A
B
C
D

What is the normal composition of dry air?

A
B
C
D

What best defines a “lock out system”?

Only prevent entry to a hazardous location
Provide positive physical isolation for active or stored sources of energy
Can be removed by anyone
Are the same as Tagout systems

The types of connectors shown in the following image are best described as:

1:Oval, 2:Rapid Link, 3:D, 4:HMS (Pear)
1:HMS (Pear), 2:D, 3:Rapid Link, 4:Oval
1:Rapid Link, 2:Oval, 3:HMS(Pear), 4: Oval
1:D, 2:Oval, 3:HMS (Pear), 4:Rapid Link

The construction of ropes normally used for rope rescue is?

Double braid (braided sheath over a braided core)
Hawser laid (classic 3-strand twisted rope)
Hollow braid (a single braid without any core)
Kernmantle (braided sheath over an unbraided core)

A carabiner has a marking on the spine as illustrated. The rated strength of this carabiner is?

2,500lbs major axis, 1,200lbs minor axis, 700lbs long axis with the gate open
25kN lying flat, 12kN suspended vertically, 7kN balanced on spine
25kN major axis, 12kN minor axis, 7kN major axis with the gate open
25kN between wide pins, 12kN between narrow pins, 7kN on the gate

In rope rescue, the term “MBS” is an abbreviation for?

Maximum Breaking Strength
Mean Breaking Strength
Minimum Breaking Strength
Manufacturer’s Breaking Strength

CSN Confined Space Inert Theory TEST ONLY

CSN Confined Space Inert Theory TEST ONLY

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