FAC Risk Assessment and Inspection Plan

Very large differences in tube wall thinning rates by flow-accelerated corrosion (FAC), or in some cases fluid erosion, are observed in the low-pressure (LP) evaporator tubes of certain HRSG designs. The tubes located near the duct wall and occasionally near the gaps between module bundles have more rapid thinning. Tubes in a given row nominally should have very similar process conditions, both on the gas-side and on the waterside. Different wall thinning rates mean that process conditions differ across the tube row.

Tetra will present their paper 'Evaluating Contributions of Flow-Accelerated Corrosion and Liquid Droplet Impingement to Pipe Thinning in HRSG Evaporator Tubes' at the EDF FAC 2013 conference, on Thursday 23rd at 10h35.

The latest updated edition of Tetra Engineering's HRSG Tube Failure Diagnostic Guide will be published August 15, 2016. Thousands of combined cycle professionals are familiar with Tetra's HRSG Tube Failure Diagnostic Guide; first published during the 'bubble' in construction in the early 2000s.