Nozzle opening limitations per EN13445

[StatEq]

Hi all,
There is a requirement to provide manhole (DN600) on a vessel (ID 1000 mm). Design code is EN13445. This configuration is exceeding the limitations mentioned in EN13445-3 Clause 9.4.5.3 and 9.4.5.4 (attached). Does EN13445 provide an alternate rule for larger nozzle openings exceeding above two clauses?
Thanks!

 

[r6155]

You can use a shell flange.

Regards

 

[XL83NL]

Does the DN600 manhole requirement originate from EN 13445 part 5, annex C?

Huub

 

[Raai2015]

Justbplay with the thk, i think you can get away!

 

[StatEq]

XL83NL,
Yes, the requirement comes from EN 13445 part 5, annex C.
Is there any alternate rule by which code allows this configuration?
Thanks in advance!

 

[StatEq]

Raai2015,
It's not like that the configuration is failing in terms of thickness or reinforcement. It is easily passed.
The only concern is limitations on opening

 

[r6155]

Which nozzle diameter do you like?

Regards

 

[StatEq]

r6155,
Didn't get your question.
Vessel and nozzle diameters are mentioned in first post above, i.e. manhole (DN600) on a vessel (ID 1000 mm)

 

[XL83NL]

Two question to better understand your situation;
- what’s the vessel’s length?
- does table C.3-1 provide any alternative options, like a head hole?

Huub

 

[r6155]

See EN 13445-3 Design

Regards