difference between ASTM D3299 and RTP-1 and cost impact

[fromCN]

Currently we face one tough issue which is our hypochlorite storage Tank Fabrication Standard.Vendor propose ASTM D3299 as per their experience* client require RTP-1* cost difference between both is huge.We request vendor to give explanation how come the difference* vendor clarify as below:

o ASME RTP-1 demands to have a laminate where the axial and radial mechanical characteristics are similar. To do that* on the composition of laminate* one part can be done by filament winding machine but it is necessary to do another part by hand lay-up layers.

o The lengths of junction knuckles and nozzles reinforcements are longer on ASME RTP-1

o Additionally the ASME RTP-1 require that a Professional Engineer certificate must be issued

Is there any expert in this regard can clarify more?specially for the 1st item*where this requirement come from?Is there any way to balance the 2 standard?Or please propose good suggestion.

 

[XL83NL]

I cant really help you on this one, however;
- RTP-1 is limited to 15 psi
- RTP-1 requires that

1-300 FABRICATOR’S DESIGN REPORT
The Fabricator or his/her designated agent shall pre-
pare a Fabricator’s Design Report, which includes the
calculations, component and joint thicknesses, and laminate
sequences necessary to establish that the design
complies with the rules of this Standard and the UBRS.
A Professional Engineer, registered in one or more of
the states of the United States or provinces of Canada
and experienced in the design of RTP vessels, as covered
by this Standard, shall certify that the Fabricator’s
Design Report is in compliance with these rules and the
UBRS.

which is different from what you're saying (with emphasis on the italic part).

Have you read the RTP-1 standard yourself to verify if these requirements are indeed correct?

 

[fromCN]

Actually i am trying to go through the whole standard but i didnt make it and that is why i am here to consult the expert.
ASME RTP-1 demands to have a laminate where the axial and radial mechanical characteristics are similar. To do that* on the composition of laminate* one part can be done by filament winding machine but it is necessary to do another part by hand lay-up layers.


I am willing to figure out whether this requirement is there since i cant find it in the RTP-1.