Meeting_Body
SYSTEM SAFETY, SECURITY AND OPERATIONS COMMITTEE
SEPTEMBER 15, 2016
Subject/Action
SUBJECT: METRO GREEN LINE TRAIN CONTROL TRACK CIRCUITS AND TWC REPLACEMENT
ACTION: ESTABLISH A LIFE OF PROJECT BUDGET
Heading
RECOMMENDATION
Title
ESTABLISH a Life-of-Project (LOP) Budget of $28,851,200 for the Metro Green Line Train Control Track Circuits and TWC Replacement Project (CP205107).
Issue
ISSUE
The Metro Green Line's train control systems are equipped with legacy AF900 track circuit units and PC-Genisys based Train-to-Wayside Communication (TWC) hardware that has been operational from the start of revenue service in 1995. The systems are obsolete and no longer supported by the Original Equipment Manufacturer (OEM). Their replacement is necessary to maintain a State of Good Repair (SGR) of the Green Line train control system.
Discussion
DISCUSSION
Commencing in 2012, Metro Wayside Systems has implemented a phased program of rehabilitation of the Metro Green Line train control system. The first phase of work (replacement of obsolete vital control processors) is nearing completion. The next phase is to replace obsolete track circuits and Train-to-Wayside Communication (TWC) equipment. Upon completion, the Green Line train control system will have been rehabilitated to the same equipment and configuration as the new Crenshaw Line, thus providing a fully up-to-date system, and conforming across the entire Green Line and Crenshaw system.
The scope of the project is to replace all 450 existing track circuits which provide train detection as well as transmitting cab signals to maintain safe train speed and safe train separation. Track circuit equipment is located in Train Control and Communication (TC&C) rooms throughout the line. At each of the 19 TC&C rooms, TWC equipment will also be replaced, comprising of non-safety train routing, train berthing, communication and local control panel equipment.
Determination_Of_Safety_Impact
DETERMINATION...
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