Rail safety issues and actions

Microlok signalling logging capabilities

Issue number: RO-2009-008-SI-03
Who it affects: Rail infrastructure managers and signal system designers
Issue owner: Australian Rail Track Corporation
Operation affected: Rail: Operations control
Background: Investigation Report RO-2009-008
Date: 11 February 2011

Safety issue description

The Microlok signalling program design does not meet the requirements of ARTC signalling standard SCP23 ‘Design of Microlok Interlockings’ in regard to the logging of internal bits that initiate flashing, pulsing or toggled outputs.

Current issue status: Adequately addressed
Status justification:

The ARTC, in their DIP response, have indicated that the logging of internal bits of the Microlok signalling system will be scoped and the work incorporated into the ARTC future works program.

Last update 31 January 2014