Critical Testing

Critical Testing

Photos of field-testing administered and recorded by the Corrosion Task Force of a Houston Gas Pipeline group using the MAC System. The application of the MAC System was completed without instruction or prior experience by members of the Corrosion Task Force (CTF). The field-testing covers a documented two (2) years of continual observation and recordings.

Note: These specimens were photographed and documented by a highly credentialed and industry respected independent, working in conjunction with the Gas Pipeline Corrosion Force.

The MAC products used at this field site were from the same batch as was supplied to the EFEH & Associates Testing Laboratory in Pearland, Texas. Corresponding Laboratory Test Reports issued by the EFEH Laboratory at the 1000-hour mark and the unprecedented 8,600-hour mark should be read in conjunction with these pictorials.

The Houston Gas Pipeline group lists as “Proprietary” this particular site and accompanying data.

Photograph “A”The photo depicts the result of a typical adhesion test procedure, which is evidencing NIL delamination/separation of the two mono-coats and nil separation from the metal lattice.
Photograph “B”The photo depicts a closer view of the actual surface area tested for adhesion after the tape was removed and nil evidence of separation.
Photograph “C”The photo depicts a typical flange joint used in gas pipe applications. Note that there is absolutely nil evidence of rust formation or manifestation of oxidization at the critical weld joints and absolutely nil corrosion at the bolt thread and flange holes.
Photograph “D”The photo depicts a typical junction and relief station configuration evidencing severe pipe sweating which is very common in the region.
Photograph “E”The photo depicts the inexperience and lack of product knowledge shown by the application crew evidencing a heavily corroded gate where the crew failed to remove existing flaking rust and applied the MAC System directly over the severely corroded surface. Notwithstanding this lack of care or experience, the MAC System completed the activity, nullifying the existing rust and preventing any further recurrence for the duration of the test. This feat could not be mirrored by any epoxy system currently available on the market. Note that the only area where rust has occurred is at the “nipple” which was covered by a rubber cover at the time of application. So severe is the corrosive environment at the site, that after the rubber cover disintegrated, the corrosion manifested itself at the only untreated area, but did not underscore the treated area.
Photograph “F”The photo depicts the heavy sweating and the corrosive fungus growth common to the test site.
Photograph “G”The photo depicts a close up of the presence of the residual sweat, which has permeated through the system coating without degradation to the system coating or suffering the normal experience of lifting the coating from the metal lattice.
Photograph “H”Depicts further close up evidence of the effects of the pipe sweating and also graphically displays a lack of any evidence of corrosion of any form to the treated areas.
Photograph “I”The photo depicts further evidence of the excessive sweating being experienced at the test site.
Photograph “J”Inspectors at the test site during the two year inspection, noted that there appeared to be what may have been oxidization of the coating evidenced by a dullness in the actual color, however this photograph depicts the valve, which was washed down with water and a mild biodegradable detergent, giving clear evidence that the discoloration was merely atmospheric pollution and that no degradation of the coating had occurred, notwithstanding that the test site experiences high UV exposure.
Photograph “K”The photo depicts yet another close up of the actual adhesion test applied at site after two years of application.
Photograph “L”Yet a further close up which clearly indicated that there was absolutely nil evidence of corrosion being experienced at the critical weld sites.