1" SS nozzle in API 650 tank shell 1

[Jetfuel]

Can anyone please advise if welding a 1" (25mm) nozzle in the shell plate of a new API 650 tank is permissible. if it is ok are there any precautions to be taken?

 

[JoeTank]

There are no provisions in API-650 for SS nozzles on CS tanks. But, its done frequently. Major issue is welding of P1 to P8 materials, so a SS to CS welding procedure is required. You may be interested to know that API has an ad-hoc task group dealing with composite construction... SS and CS tanks.

Steve Braune
Tank Industry Consultants

http://www.tankindustry.com