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Precipitator Retrofit and Repair: A Case Study

by J. Newell, Stone & Webster Engineering Corp, Boston, United States,
C. M. Worster, Stone & Webster Engineering Corp, Boston, United States,
R. C. Wilmer, Stone & Webster Engineering Corp, Boston, United States,



Document Type: Proceeding Paper

Part of: Energy in the 90's

Abstract:

Described is a difficult fossil power station retrofit project performed on a tight schedule at a congested site. Installation of a new supplementary precipitator and structural repairs to the existing precipitator were accomplished with no impact on scheduled plant operation by completing the final repairs and tie-ins in 28 days during a scheduled maintenance outage. Discussed are the engineering and construction methods used to accomplish the project including the team approach, innovative arrangement of the new precipitators, integration of engineering and construction, the use of 3-D CADD modelling for construction sequencing and rigging studies, effective use of pre-outage construction, and modular construction techniques.

Subject Headings: Construction methods | Construction equipment | Power plants | Rehabilitation | Case studies | Electric power | Construction engineering | New Hampshire | United States

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