Cogeneration Power Plant

Plant Description

A cogeneration plant combines the production of electricity with the generation of useful heat in the form of steam and/or hot exhaust gases.

Power generation is normally achieved via a gas turbine. Where steam is the useful heat source this is generated in a Heat Recovery Steam Generator (HRSG). Where gas is the useful heat source this is taken from the gas turbine or HRSG exhaust once all useful thermal energy for power generation and steam generation has been extracted.

Kentz Capabilities and Experience

Where the client has chosen to award the contract on a EPC (Engineer, Procure & Construct) basis, Kentz typically enters into consortium with an established OEM for the power plant prime equipment such as gas turbines and HRSGs. Kentz takes responsibility for the complete Balance of Plant (BOP) for all mechanical, piping, electrical & instrumentation and civil works. Complete site installation works is performed by Kentz, supported as required by specialist OEM technical representatives.

Balance of Plant scope typically comprises the following:

• Natural gas treatment and distribution systems
• Fuel oil treatment and distribution systems
• Demineralised water systems
• Compressed air systems
• Chemical dosing systems
• Steam and water sampling systems
• Laboratory and workshop equipment
• Feedwater pumping systems
• Wastewater treatment systems
• Main steam piping systems to defined battery limit
• Gas ducting to defined battery limit
• Low, medium and high voltage electrical distribution systems
• Distributed Control Systems (DCS)

Engineering, Procurement and Construction

Kentz performs the complete Balance of Plant engineering and procurement functions. Engineering of the plant is carried out in close consultation with the OEM, who provides key design input such as major equipment loads and dimensions. Kentz performs engineering for all disciplines, such as civils, mechanical, process, electrical and instrumentation systems.

Procurement and expediting roles involve extensive logistical challenges due to worldwide sourcing of equipment and often challenging and remote locations of project sites. Kentz employs the services of many Third Party Inspection Companies to ensure all equipment supplied meets all applicable Regulatory Standards and Project Specification requirements.

Construction and commissioning is largely executed on a self-perform basis by Kentz, with specialist subcontractors employed as required. Construction and commissioning involves preparation of all required handover documentation presented to the client.

Following handover of the plant, Kentz provides site-based warranty engineers for the duration of the warranty period.