Vessel Description: Reactor
MOC: SA 516 gr 70
Design temperature: 200 deg C
Design pressure: 44.6 kg/cm.sq
Thickness: 36 mm for shell; 50 mm for the dished end
Service: Hydrogen environment in the presence of catalyst
Above equipment was accidentally subject to temperature run away during Hydrogen sweeping. As a result the temperature shot up abruptly to the range of
700 deg.C. for 15-20 minutes and 450 deg c for approximately a couple of hours.We have checked the hardness which is found to be OK. In-situ metallography is underway.
My queries to metallurgical experts are
- What will be the metallurgical impact on integrity of the vessel due to above incident?
2. How can we assess the damage/degradation which might have occurred on the of the vessel in terms of its metallurgy? please suggest some NDE's
Regards
Hrishi
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