Core Concepts and Principles Flashcards

In a SPRAT two-rope system, what is the defining requirement for the working line and the safety line?

Answer: Each must be independently anchored so failure of one does not compromise the other

SPRAT requires two independently anchored lines so a single failure cannot cause a fall.

A technician's back-up device is positioned well below their harness attachment point. What is the main concern?

Answer: A larger potential fall distance and higher fall factor if the main line fails

Keeping the back-up device high minimizes fall distance and impact force.

How is fall factor calculated?

Answer: Distance fallen divided by the length of rope available to absorb the fall

Fall factor equals fall distance divided by the length of rope arresting the fall.

Which SPRAT level is required to supervise rope access work on site?

Answer: Level III

SPRAT requires a Level III technician to supervise rope access operations.

Why must a rescue plan be in place before rope access work begins?

Answer: Suspension in a harness can cause orthostatic intolerance, so rescue must be prompt and self-sufficient

Harness suspension can quickly become life-threatening, so the team must be able to perform its own rescue.

What type of rope is typically used as the main working line in rope access?

Answer: Low-stretch kernmantle rope

Low-stretch kernmantle rope provides efficient ascent/descent with minimal bounce.

In the hierarchy of controls applied to work at height, which approach should be considered first?

Answer: Eliminating the need to work at height

Elimination is always the most effective control and should be considered before PPE or rope access.