Haverhill Line Upgrade Discussion (Western Route)

Discussion relating to commuter rail, light rail, and subway operations of the MBTA.

Moderators: CRail, sery2831

Re: Haverhill Line Upgrade Discussion (Western Route)

Postby gokeefe » Mon Oct 02, 2017 6:21 pm

Lower cost to operate? ... ?
User avatar
Posts: 9677
Joined: Sat Feb 16, 2008 12:28 pm
Location: Winthrop, Maine

Re: Haverhill Line Upgrade Discussion (Western Route)

Postby Trinnau » Mon Oct 02, 2017 10:18 pm

MBTA has been installing gas blower heaters in addition to electric heaters. The first started popping up at some key points - places where single track becomes double track or oft-used crossovers. So in addition to the baseline electric heaters, the gas blower heaters can handle a large amount of snow in short order, and also clear the track for a much bigger area, allowing a train that is pushing snow a place to drop that snow prior to dumping it on the switch points which can prevent them from throwing.

This is all stuff out of the lessons learned from 2015.
Posts: 335
Joined: Thu Sep 16, 2010 7:27 pm

Re: Haverhill Line Upgrade Discussion (Western Route)

Postby BandA » Wed Oct 04, 2017 4:55 pm

Is it propane or natural gas?
User avatar
Posts: 1820
Joined: Thu Oct 11, 2012 11:47 am

Re: Haverhill Line Upgrade Discussion (Western Route)

Postby F-line to Dudley via Park » Wed Oct 04, 2017 5:29 pm

Propane. It's cheap, and can be done anywhere from a tank hookup in the signal bungalow. Switch heaters don't exactly use a lot of fuel, so the tanks can be small/safe and don't need to be refilled often. To do natural gas you need a pre-existing existing local utility gas line that happens by pure chance to be adjacent to the tracks right next to the interlocking. Proximity to a gas line just doesn't match up well with enough interlocking locations across the system, so only a handful of switches would ever plausibly have a gas source close enough to be able to be done up that way. Ends up better economy-of-scale to just pick one fuel type and use propane systemwide for any such winter-resiliency installations.
F-line to Dudley via Park
Posts: 7099
Joined: Fri Mar 11, 2005 7:26 pm
Location: North Cambridge


Return to Massachusetts Bay Transportation Authority (MBTA)

Who is online

Users browsing this forum: Dick H and 7 guests