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 Xcel Energy High Bridge Plant




Xcel Energy's High Bridge power plant was built in 1923 and, together
with a sister plant in Minneapolis, once formed the hub of Northern States
Power Company (a predecessor to Xcel Energy).  Unique to High Bridge
were substation controls that could distribute power directly to the city
of Saint Paul.  The two original units began service in 1924 with two more
units, twice the size of the first two, added in 1942 and 1944. Units 5 and
6, which were larger yet, began operating in 1956 and 1959.  When the
four oldest units were retired from service, two of the boilers were kept
and provided process steam to a Saint Paul paper manufacturer through
a 5-mile steam line constructed in 1983.  In 2008 the 480-665 MW High
Bridge MERP project, a natural gas-fired combined-cycle unit, came online
and replaced the aging 271 MW coal-powered facility.

The nation’s largest demolition firm, Brandenburg Industrial Service
Company, was awarded the decommissioning contract from Xcel Energy.
Established in 1968, Brandenburg will be removing the 6 generating units,
completing structural demolition (including the 570-foot tall stack),
environmental abatement and soil remediation.  The project is scheduled
to be completed in the fall of 2010.

 Equipment


 Bobcat: S300 with demolition grapple bucket, S300 with sweeper,
   T300.
 Caterpillar: D6Nlgp, 973C with demolition grapple bucket, D400D,
   D400E.
 Dust Control Technology: DB60 Dust Boss.
 Elgin: Broom Bear.
 JLG Lift: 1350SJP.
 Komatsu: WA500-6 with demolition grapple bucket.
 Liebherr: R954C with bucket, concrete pulverizer, demolition grapple,
   magnet and shear.

 October 2008


 
 
 
 July 2008


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 June 2008


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 May 2008