Test Methods

Autoclave

The Autoclave test is designed to simulate field conditions in a controlled, laboratory setting.

Coatings are exposed to liquids and gases where the liquids consist of polar and non-polar mediums and the gases are a mixture of corrosive, flammable, and/or inert mediums. The coatings are also exposed to temperature and pressure. For service environments where there is a possibility of rapid decompression this can also be simulated. These lab conditions are typically selected to simulate upper limits of potential service to help speed any degradation of the coating. Coatings that demonstrate the least reaction are considered the most suitable for use in that particular environment.
autoclave charter coating

Test Objectives:

Evaluate internal coatings and linings for tank and vessel applications for material selection
Determine and compare coating performance under simulated service conditions (sweet or sour conditions, with or without rapid decompression)
Qualify new coatings for a specific environment
Determine chemical resistance, resistance to steam out, resistance to gas variation (cyclic testing)

Test Capabilities:

Temperature: up to 300 °C (572 °F)
Pressure: up to 9,000 psi
Gas Phase: H2S, CO2, CH4, N2 or air

Hydrocarbon Phase: produce oil, kerosene, toluene

Aqueous Phase: Brine, ammonia solution, carbonic water
Decompression: Standard or Fast Decompression (Less than 1 min.)
Samples: 6 to 12 with recommended dimensions of 6” x 2” x 0.25”, alternate sample numbers and sizes are available, please consult with our technical personnel.

Test Methods:

NACE TM0185
ARAMCO 09-SAMSS-067
ARAMCO 09-SAMSS-089
PDO SP 2095 Appendix B.1
API RP 5L7 Appendix 10
API RP 5L2 Appendix 5 and Appendix 6
Custom test conditions as required

Coating Performance Evaluation (example standards shown):

Adhesion: Parallel Scribe, X-cut (ASTM D6677), Pull-off (ASTM D4541)
Electrochemical Impedance Spectroscopy (EIS) (ISO 16773)
Film Thickness (ASTM D7091)
Blistering (ASTM D714)
Cracking (ASTM D661)
Gloss (ASTM D523)
Delamination
Colour change

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