Project Background

Sahaviriya Steel Teesside is the successor to Teesside Cast Products. The acquisition agreement for Teesside Cast Products was signed on 24 February 2011 by SSI UK and Tata Steel UK. SSI Teesside is a modern iron and steel making facility which sits on a coastal site located in Redcar North East of England. The Teesside iron and steel making facility, is fully integrated from raw material agglomeration, coke making, through to iron & steel making and power generation. The blast furnace at Redcar is the second largest blast furnace in Europe and is linked to a modern steel making facility, which has an annual steel slab production capacity of 3.5 million tonnes. SSI Teesside is a Tier 1 World steel slab producer with a proven track record of producing various advanced steel grades. As part of the restart, SSI had a requirement for the inspection and refurbishment of their rubber lined water treatment vessels that operate within the Redcar power station.

The Brief

The Water Treatment Plant at Redcar is based on a conventional ion exchange process, consisting of Cation and Anion resins beds, followed by a Mixed Bed polisher unit.  There are three streams installed, each of the Cation-Anion pairs operating at 180 m3/hour on an “on or off” basis. The Mixed Bed (MB) produces water continuously, with a variable throughput anywhere between 60 and 250 m3/hour, fed from the semi treated water sump located after the Anion bed. The project brief was to inspect and refurbish the No.2 Cation, & Anion units and Mixed Bed 1 vessel linings, furniture/lateral systems including a resin change.

Solution and Results

Cyrus RW, in cooperation with a sub contractor, mobilised to site and work commenced in January 2012. Working under strict operational and site requirements, 7 days a week, each unit was blanked off from operation with pipework removed and emptied of water and resins. All laterals, internal fixtures and fittings were removed and inspected, and then Cyrus performed a complete strip and reline of each vessel’s rubber lining. Following onsite curing and inspection, the vessels were reassembled and replenished with new supplies of exchange resins. Vessels were successfully handed back to SSI for operation in March 2012.

on site rubber lining 1on site rubber lining 2on site rubber lining 3