6 March 2008 New training session in Europe in June 2008 - Effective Operation of the HRSG and Steam Plant. 25 January 2008 New training session in USA in June 2008 - Effective Operation of the HRSG and Steam Plant. 31 December 2007 Tetra reaches milestone of over 200 HRSG Inspections in 2007. 23 May 2006 Introducing our new course: Effective Operation of the HRSG and Steam Plant. 12 January 2006 New HRSG Publications From Tetra Engineering.