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Diamond Valley "B" Signalbox.
The Signalbox at Diamond Valley was built in 2003, and controls all Main line movements from local Diamond Valley Passenger trains & express Special passenger trains to Yard shunting and passenger stock storage. All train movements from the two Diamond Valley station platforms are directed along the intended route by the use of a 44 lever miniature "interlocked" frame and monitored on the large illuminated diagram. |
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This is the second Diamond Valley "B" Box. The first served DVR for many years
but was ultimatly eaten away by termites. The current signalbox was patterned
after the full size Ringwood Signalbox here in Melbourne.
The majority of signals and points are air operated. Two position Semaphore signalling incorporates a majority of the safeworking at Diamond Valley. Signalmen are responsible for the correct routing of trains with trains regularly obtaining 30 second departure clearances. Construction of the new "B" Signalbox |
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At the time of construction, Nillumbik was a single track stabling siding, however with the construction of the New Workshops, a run around loop and storage for 6 full carriage sets was added. The signalling at Nillumbik is Two position signalling (Light) and the panel has the availability of being "Switched Out" to run automatically. |
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The 44 lever interlocking machine was installed out of the old "B Box". This lever frame is in use untill a NEW 80 lever frames is built. Then the old frame will be retired. The levers are color coded for signal / point & lockbar identification and are electrically interlocked to prevent opposing train movements from being performed. The color coding for levers is:
BLACK:Points. BLUE:Facing point LOCKS. BLACK / WHITE:Switch IN OUT, PILOT levers. Indicators above the levers show the signalman the status of each signal or point. An Illuminated diagram above the lever frame indicates positions of trains throughout the Diamond Valley area. |
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 The illuminated diagram shows the location of trains on the mainline. This Diagram has lights on for train occupation. The diagram has had many revisions over time. It has been reused from the old "B" Box. It will be replaced with two seperate diagrams, one for the Arrival end,m one for the Departure end. |
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