STSC Confined Space Entry Procedures 2

Question 1

What is the minimum air monitoring requirement before entering a permit-required confined space?

Accepted Answer

Test for oxygen, flammable gases, and toxic air contaminants

Answer

OSHA 29 CFR 1926.1203 requires testing for oxygen content, flammable gases/vapors, and toxic air contaminants before entry.

Question 2

Who is responsible for monitoring conditions and maintaining communication with authorized entrants in a permit-required confined space?

Accepted Answer

The attendant

Answer

The attendant remains outside the space, monitors conditions, and maintains communication with authorized entrants.

Question 3

When must a confined space entry permit be cancelled?

Accepted Answer

When all authorized entrants have exited the space

Answer

The entry permit must be cancelled when the authorized entrants have exited and no further entry is required under that permit.

Question 4

What rescue method is preferred for confined space rescue operations?

Accepted Answer

Non-entry retrieval using a retrieval system

Answer

Non-entry retrieval is the preferred method as it eliminates the need for rescuers to enter the hazardous space.

Question 5

A space that has the potential to become permit-required under certain conditions is classified as:

Accepted Answer

An alternate-entry confined space

Answer

Alternate-entry confined spaces may become permit-required when conditions change, requiring a re-evaluation.

(STSC) Safety Trained Supervisor Construction Practice Test