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Reformer Tubes Residual Life Assessment

Reformer Tubes Residual Life Assessment

Reformer Tubes Residual Life Assessment

(OP)
The Primary Reformer tubes of our Ammonia plant are in service for the last 20 years. We now want to assess the remaining service life of these tubes. I want to know which tests are necessary for this purpose? The material of these tubes is 25Cr32Ni-Nb.

RE: Reformer Tubes Residual Life Assessment

I would resort to physical dimensions and tube sampling for comprehensive metallurgical examination.

RE: Reformer Tubes Residual Life Assessment

As pointed out in the other posts; It is not very elegant, but tape measure the tube diameters is sure easy,fast and cheap. I have crawled around a few of these furnaces with fancy UT attenuation units and a ferromagetic doodad ; about all they did was verify the tape measure results.  Then if you really want to know; cut out some samples for stress/rupture testing.
Also , look in the the furnace while in operation for any burners with bad flame patterns ( making hot spots).

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