How Thermal Shock can cause Flange Leakage | EngineeringTrainer

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How thermal shock can cause flange leakage
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In this video, we discuss how sudden increases in operating temperature can result in leakage at flange joints. More specifically, you will learn how thermal transients inside a flange joint can lead to loss of bolt loading and hence loss of gasket seating pressure. This will be illustrated by a Finite Element Analysis using the FEPipe software by Paulin Research Group.
Instructor:
/ luukhennen
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[@1ThomasTom]

Hey Luuk, misschien leuk om een short te maken waar je het in een nutshell uitlegt. Verder wel een interessante clip!

[@luukhennen7528]

Bedankt voor de suggestie, Thomas. Dat staat zeker op onze radar!

[@ashishbandyopadhyay5194]

How about the bolts whoch are tensioned?

[@EngineeringTrainer]

Hi Ashish, thanks for asking. So the bolt in this video was tensioned as normal when the thermal shock happened. Also, if you te-tension the bolt there is much less control over the status of the bolt. It could be a temporary solution until replacement is possible.

[@bonjournito]

So the flat face flanges are worst case in case of heat expansion??

[@joshuaramcharan9735]

So, using longer studs at joints which experience rapid temp changes can reduce this effect?
Please do a video on flanged joint analysis and touch on this subject.

[@EngineeringTrainer]

Hi Joshua, you are correct. Longer bolts help to distribute the enforced displacement over more length resulting in lower stress.