Absolute Signal Blocking (ASB) is a method of working in the Danger Zone by maintaining controlled absolute signals at STOP.
ANRP 3012 - Using Absolute Signal Blocking
Type | Rules and Procedures |
Edition Number | 1.5 |
Publication Date | Jun 19, 2015 |
Last Updated | Jun 19, 2015 |
Version | 1.5 |
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