ASME Section VIII Div. 1 : Query about stiffener ring on insert plate

[Joshi]

Dear All,

 

Request your kind expert advice on below query.

 

Vessel have Nozzle with Insert plate. External pressure stiffener ring is passing over Insert plate. Is this allowed as per code? Can we notch the stiffener ring to suit the insert plate shape outside vessel? Shift of Stiffener ring is not possible to no space available..

 

Request your prompt positive advise.

 

Thanks and best regards

 

Joshi

 

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[Rajagopal Kannan]

Dear Joshi,

First you have to Radiograph the area at which the stiffener ring passes. On satisfactory review, you can weld the Stiffener ring crossing the insert plate.

Thanks and Best Regards,

K.Rajagopal

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[murugesan jeyaraman]

Hi

 

I understand that nozzle with insert plate means as per Fig UW-14 f1 through UW-14 f4,

 

If stiffening ring overlaps the insert plate (integrally reinforced  Nozzle), it should not be a problem as you can directly weld over the insert plate.

 

If welds overlap the welding of insert plate with shell, you have to flush grind the portion of the  weld, then shoot RT and then weld the stiffening ring, do some surface NDT after welding the stiffer ring.

 

Murugesan

[Rajagopal Kannan]

Dear joshi,

To be little more clear,
First you have to Radiograph the insert plate to shell weld at the location where the stiffener ring comes over the weld. On satisfactory review, you can weld the Stiffener ring crossing the insert plate to shell weld by flush grinding that particular portion.

[Mohan]

Hi,

I have searched for Fig UW-14 f1 through Fig UW-14 f4 in Div 1 but I couldn't find it. Please advise.

Thanks & regards

Mohan