Duke Energy - Cliffside Steam Station, Cliffside, NC

Scope of work: 

Southern Environmental, Inc. provided detailed engineering, material supply, fabrication, construction management, a 1/12 scale physical model study, electrical wiring, foundation, field construction, insulation and lagging, painting and start-up services for the Cliffside Unit 5 ESP Rebuild. The rehabilitated precipitator is downstream of a new SCR.

Phase 1 consisted of rehabbing the inlet Chevron duct including stiffening for - 32 incw pressure, roof replacement and structural penetration' for SCR columns.

In Phase 2, the existing precipitator was retrofitted with new internals utilizing customized SEI/ELEX rigid discharge electrodes and Opzel collecting plates. The lower 8’ of the existing twenty-four hoppers was also replaced. The existing casing was stiffened for increased pressure requirements added by the SCR. A new SEI outlet field, including foundations, support steel, casing, hoppers and Chevron outlet plenum, was added to both precipitator casings. The precipitator was re-sectionalized and new transformers, electromagnetic rappers and controls were added for increased performance.


Project Duration: 

  • PO Received: January 2001

  • Phase 1: Inlet Duct Rehabilitation

    • Mobilize: March 2001

    • Demobilize: May 2001 - Five week outage

  • Phase 2: Electrostatic Precipitator Rehab

    • Mobilize: October 2001

    • Demobilize: May 2002 - Eight week outage

 

Detailed Engineering in the following disciplines:

  • Structural

  • Mechanical

  • Electrical

  • Civil

  • 1/12 Physical Scale Model Study

 

Fabrication and Construction Services:

  • Caisson and Foundation Installation

  • Structural Steel Fabrication and Construction

  • ESP Fabrication and Construction

  • Electrical Design and Supply

  • Ductwork Fabrication and Installation

  • Project Management

  • Site Management

  • Insulation and Lagging

  • Painting


Application:

592 MW Coal Fired Power Boiler

 

Performance Guarantee:

SEI provided a broad range of guarantees for twenty-two coals ranging between ESP Efficiency: 99.7% at 15% opacity and 10% opacity

Inlet Gas Flow: 1,950,000 ACFM at 280 degrees Fahrenheit.