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



 Equipment


 Bobcat: S300 with demolition grapple bucket, demolition hammer,
   Atlas Copco SB450 impact hammer, Bobcat 72 inch sweeper,
   Stanley|LaBounty MSD7R shear, T180 with Bobcat soil conditioner,
   T300 with Atlas Copco SB450 impact hammer, demolition grapple
   bucket and forks.
 Caterpillar: Caterpillar 308Ccr with H90C impact hammer, 345Cl,
   D6Nlgp, 815F, 973C with demolition grapple bucket, D300D, D400D,
   D400E.
 Dust Control Technology: DB60 Dust Boss, DB60 Dust Boss with
   portable power unit.
 Elgin: Broom Bear.
 Grove: ATS870B, GMK5165.
 Ingersoll Rand: SD70DTF.
 John Deere: 6615 with 741 loader and Haybuster 2100, 6615 with
   640 loader.
 JLG: E600JP, 800A, 1200SJP, 1350SJP, G10-55A.
 Komatsu: WA500-6 with demolition grapple bucket.
 Liebherr: R924B with bucket and magnet, R954B with demolition
   hammer, demolition grapple, demolition pole, Atlas Copco HB4200
   impact hammer, magnet and Stanley|LaBounty UP90 universal
   processor (concrete pulverizer jaw), R954C with demolition grapple,
   demolition hammer, Atlas Copco HB4200 impact hammer, magnet,
   Stanley|LaBounty MSD4500RSL shear, sifting bucket and
   Stanley|LaBounty UP90 universal processor (concrete pulverizer jaw),
   R984B with Stanley|LaBounty MSD200R shear, R984C with Atlas
   Copco HB7000 impact hammer, bucket, Stanley|LaBounty
   MSD9500RSL shear.
 Link-Belt: HTC8670.
 Nelson Manufacturing: CBC30ST.
 Serco: 7500.

 January 2010


 
 
 
 December 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 November 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 October 2009


 
 
 
 
 
 
 
 
 
 
 
 
 

">

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 September 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 August 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 July 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 June 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 May 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 April 2009


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 March 2009