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Total Quality Management. Standard Operating Procedure Of Weight Loss Coupon Pit Depth Lisa Hamilton December 4, 2007. Baker Petrolite.
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Presentation Transcript
Total Quality Management
Standard Operating Procedure
Of
Weight Loss Coupon Pit Depth
Lisa Hamilton
December 4, 2007
Baker Petrolite
Baker Petrolite supplies products to enhance oil and gas production. These sales evolve around chemicals designed to protect tubing, pumps, casing, etc. all which are used in the oil and gas industry.
Laboratory Analysis
As a lab technician, I run analysis’ on samples to determine the makeup of the material in order to gain the knowledge needed to introduce chemical to solve various problems.
Weight Loss Coupon
One type of analysis done to monitor corrosion is a weight loss coupon, this is a mild steel rod placed in the flow line of fluid for at least thirty days to determine the metal loss per year. This analysis simulates the damage of corrosion on the tubing.
Pitting in the Coupon
Small pits can form in the coupon when exposed to the fluid in the flow line. Usually bacteria, either Sulfate reducing or Acid producing bacteria, hydrogen sulfide, carbon dioxide, oxygen or acid corrosion are causes of corrosion.
Using the Pit Depth Gauge
The needle of the gauge is placed in the largest pit on the coupon. The gauge will point to the depth. You take this reading and plug it into this formula:
Pitting MPY=depth of deepest pit (in) X 1000 X 365
Time of exposure (in days)
