RIIWHS202E Isolation and Lockout/Tagout Procedures 2

Question 1

What is the correct sequence for applying a lockout/tagout procedure before confined space entry?

Accepted Answer

Shut down equipment, isolate energy source, dissipate stored energy, apply lock and tag, verify isolation

Answer

Notify workers, apply tag, shut down equipment, test for isolation

Answer

Apply lock, shut down equipment, notify workers, verify atmosphere

Answer

Isolate energy, notify workers, verify atmosphere, apply tag

Question 2

A danger tag attached to an isolation point in a confined space entry situation means:

Accepted Answer

The equipment must not be operated or the isolation removed

Answer

The equipment is safe to operate with care

Answer

The tag indicates the equipment has been inspected and passed

Answer

The equipment is available for use by authorised personnel only

Question 3

Why must stored energy (such as pressure, gravity or capacitive charge) be dissipated as part of isolation procedures?

Accepted Answer

Because stored energy can be released unexpectedly even after the power source is isolated

Answer

To allow the entry permit to be signed off faster

Answer

To improve air quality within the confined space

Answer

To reduce the weight of equipment before it is removed

Question 4

In a confined space with multiple energy sources (electrical, hydraulic and pneumatic), which statement about isolation is correct?

Accepted Answer

Each energy source must be individually identified and isolated

Answer

Isolating the electrical supply is sufficient as it powers the other systems

Answer

Only the highest-risk energy source needs to be isolated

Answer

The supervisor can verbally authorise work without isolating all sources

Question 5

Who is responsible for ensuring all isolation points are identified and documented on the confined space entry permit?

Accepted Answer

The entry team leader or authorised person issuing the permit

Answer

The plant operator who normally runs the equipment

Answer

The standby person stationed at the entry point

Answer

The workplace health and safety representative

Question 6

What action should a worker take if they discover that an isolation lock has been removed without authorisation while they are still inside a confined space?

Accepted Answer

Exit the confined space immediately and raise the alarm

Answer

Continue working and report the issue when they exit

Answer

Re-apply the lock themselves using a spare lock from the entry kit

Answer

Contact the supervisor by radio before deciding whether to exit

Question 7

The purpose of a group lockout hasp in confined space isolation is to:

Accepted Answer

Enable multiple workers to each apply their own personal lock to a single isolation point

Answer

Allow only one designated lock to secure multiple energy sources simultaneously

Answer

Serve as the primary danger tag holder for the entry permit

Answer

Replace the need for individual worker locks in low-risk confined spaces