international magazine
09 / 2007

LOTIS: Laser Optical Tube Inspection
System for hydrogen plants of the Johnson Matthey

The steam reformer is the largest and most expensive piece of equipment in hydrogen, methanol and ammonia plants. Due to the arduous operating conditions (the inside pressure of 20 to 40 barg, temperatures up to 10001100C on the outside) the tubes run close to metallurgical limits and suffer creep damage over time.