Multiple disc coupons available for pipes with diameters of 6 “or more. This method of protection against corrosion of the pipe offers the following advantages: Inherent orientation parallel to flow, greater area area at a specific level, greater quantity and variety of Coupon materials, easier monitoring in stratified flow or multi-phase flow, and the location of corrosion coupons in the assembly access recreation area for cormon corrosion monitoring gas pockets or stagnant areas.
Multiple disc coupons 2″ system can be used to Monitor:
- Top of line
- Middle of line
- Bottom of line
Coupon Preparation and Cleaning
The decision of strategy for beginning readiness of the coupon surface, and for cleaning the coupon
later use, is basic in getting helpful information. Both the pertinence and reproducibility of weight reduction
information are exceptionally touchy to the inborn reasonableness of these methods, and to the consideration with which
they are executed.
Surface completing strategies fluctuate across an expansive reach for
explicit applications. Impacting with glass dab, sand, or
other total can give a satisfactory completion to a few
applications. Sanding with rough belts, or surface or
twofold plate crushing with rough stones likewise gives an
superb surface for assessment.
Cleaning of examples prior to gauging and openness is basic to eliminate any pollutants that
could influence test results.
Reference ought to be made to NACE Recommended Practice RP-0775 and ASTM G-1 and G-4 for
further detail on surface getting done and cleaning of weight reduction coupons.