Sealed Releases

Question 1

If a sealed release is provided, when must you only use it? (2)

Answer 1

1. A lever working points or a facing point lock is locked by failure of a track circuit.
2. Controlled level crossing barriers are locked down by failure of a track circuit or by occupation of a track circuit by a failed train.

Question 2

Before using a sealed release, what must you make sure of each time? (2)

Answer 2

1. The line is clear and no movement is about to be made over it.
2. That it is safe to do so.

Question 3

What must you make sure of before operating a release to raise level crossing barriers? (2)

Answer 3

1. Protecting signals are at danger and controls in a normal position.
2. The auto raise switch (if provided) is in a manual position.