vit_vwmr v1.0.0

Nace Rp 0775 Pdf Free

Download File - https://ssurll.com/2tjn24

before the start of the work, corrosion of the coupons is initially measured and then a constant corrosion rate is obtained by equating the corrosion rate estimated at the end of the work period to the initial corrosion rate. the standard used for corrosion rate measurement in this work is nace rp-0774881414national association of corrosion engineers - nace. rp 0775: standard recommended practice - preparation, installation, analysis and interpretation of corrosion coupons oilfield operations. nace; 2013. which is for oil and gas pipeline coils. the flow of corrosion data is shown in the table below.

the corrosion rate measured in this work is approximately 9.6 µm/a and the obtained values are on the low values of the classification on nace rp 0775, in the range in the phase ii. these corrosion rates remain steady over the total 60 days period. the resistivity is stable in the course of corrosion, so the estimations of porosity are not significant. this allowed us to consider the corrosion rate in phase ii, which is the rate real of the corrosion itself. assuming that the corrosion is correlated with the area of the coupon, the data of the corrosion rates are processed according to the ratio of the coupon area versus the area of the pipe at the site of corrosion.

the estimation of the areas of the coupons is made using electronic digital software program (epson-casio-caliberes), installed on the personal computer. the result of the trials are shown in the figure. 84d34552a1