GERT8000-HB8 Iss 5
IWA, COSS, or PC blocking a line
You will need this handbook if you carry out the duties of a IWA, COSS or PC blocking a line. This document has been updated as part of the December 2015 Rule Book Programme.
Summary Of Changes
Superseded by GERT8000-HB8 Iss 6, which introduces one line-blockage form for signaller and COSS, in place of separate forms.
Read full standard
Rule Book Handbook
- In Force: