Corrosion Coupon
Corrosion coupons are metal strips that are used for measuring rate of corrosion in a system. Pre-weighed strips are installed in the coupon rack. The corrosion rate in a specific operating system is measured by comparing the initial weight with the weight of the strips after the test period of 60, 90 or 120 days as planned. Measurement of corrosion rate helps in planning maintenance, repair needs and also to assess material failure possibilities.