Steam Dryer Pressure Vessel Registration Question

[az5333]

Hi Everyone. I have currently been assigned with having one of the steam dryer drums registered in Canada. The double drum style dryer works using steam flowing inside the drums while heating the outer surface. The condensate from the cooled steam is then transported back to the boiler. The manufacturer is from US and the drum is from 1960's. My question is what steps do I need to successfully calculate if the drum is good to be used as a Pressure Vessel as per ASME Sec VIII Div-1. I want to get the right information from the manufacturer themselves, so I can do the calculations. So far I have thought about the following parameters:

1. Thickness of the shell along with any Corrosion Allowance,

2. Inside / Outside Dia. of the drum,

3. Material of the drum,

4. Design Pressure and Temperature of the drum,

5. Openings in the drum with details (for reinforcement calculations),

6. Welding details for any welded areas and any joint efficiencies,

7. Bolted cap details.

Have I missed anything. And am I using the right approach to have this pressure vessel certified in ON, Canada?

Highly appreciate the help and support.

 

[Geoff13]

It would have been better to post in forum794.

You should call the Ontario TSSA (Technical Standards and Safety Authority). They could advise on the correct procedures and documentation required. Canadian pressure vessels fall under CSA B51, but it requires the use of ASME Section VIII for design and construction. See also : Link.

A vessel from the 60's is before low temperature was a consideration in ASME material selection so that may be a difficulty if TSSA requires you to evaluate the vessel to the current Code. If TSSA will allow the vessel under it's 1960's ASME stamp perhaps only an inspection will be required?