The test results for a plant vessel with a dual layer refractory lining with various conditions are presented. The wall of the vessel has two types of defect, one with shell only and the other with a voided section, ie the 2nd layer is in place but a large gap (~100mm) between the two layers. A view of the damaged area inside the vessel is shown in Figure 1 and Figure 2. The baseline is taken from the vessel with a known good condition.

View of shell and void inside the vessel
P-Response® is a "valued added" patented NDT technology developed to evaluate refractory structures in industrial vessels.
The technology benefits are –
Bureau Veritas (BV) uses P-Response NDT technology. For condition assessments of refractory and civil concrete structures.
Bureau Veritas is one of the largest global certification companies with 900 offices and laboratories in 140 countries around the world.
For further information contact:
Peng Li - Asset Management Engineer - Civil
Bureau Veritas Asset Integrity and Reliability Services Pty Ltd
7 Palmer Place, Murarrie, QLD 4172
Tel: +61 (0) 7 3907 7111