Haynes Repowering Project Unit 5-6

All Projects, General Engineering, Mechanical, Power/Industrial, PowInd 3 Project Cat, Renewable Energy/Power

Long Beach, California

General Contractor: Kiewit Power Constructors
Contract Value: $219K
Year Completed: 2012
Scope: Piping Fabrication, Mechanical, Equip. Procurement
Delivery: Design Build

Project Description: Haynes Generating Station is a natural gas and steam power plant located in the city of Long Beach and built in the mid-1960’s. The station has six generating units with a combined capacity of 1,600 megawatts (MW). In 2005, LADWP repowered Units 3 and 4 utilizing combined cycle technology.
To meet today’s California emissions standards and reduce pollutants Haynes Units 5 and 6 were replaced with 6,100MW simple-cycle units that provide fast-start capability, ramping up to full load in 10 minutes. The project also provided dry cooling towers which replaced the ocean water cooling system for those units—gas compressors, electrical transformers and switching equipment.
The project met air quality standards, improved energy efficiency and eliminated the use of ocean water cooling.

Murray Company’s scope of work was to provide condenser cooling water to five generating units. The main supply and return pipelines to and from all three towers located underground, made of prestressed concrete cylinder pipe (PCCP) suitable for saltwater applications. Pipes ranging in size from 84” to 120” in diameter. Pipes connected the condensers to the supply and return lines, made of FRP and placed above ground on pipe-racks.