Tetra has published a series of guides which are available for ordering.
A selection of technical papers available for reference.
Selected papers, presentations and articles from major industry conferences and events.
With over 30 years of experience in power and industrial steam generation services, Tetra Engineering has along history of projects.
A CFD study on one of the 4th quadrant pipe bends at a thermal power plant steam boiler was performed. The purpose of the analysis was to analyse the change in flow velocity due to an increase in the bend nominal size from 3” to 4”. The connecting pipe run was kept at 3” and standard expander/reducers are used to join the pipe with the bend. Input process parameters were taken from a PPSD model.
The LP economiser lower header on a HRSG ruptured shortly after a diverter damper incident. Tetra was approached by the client to investigate the possible root causes for the rupture. The unit went into single element control at the time of the incident and the LCV cycled through fully open / fully closed positions to maintain the drum level after “shrink”. When the damper re-opened the LCV remained closed as the drum level increased (swell). The economizer temperature increased and there was an associated increase in pressure. The safety valve failed to operate as it was accidentally gagged, causing serious over pressurisation and a burst header.
