API 620 nozzle and external pressure design
API 620 nozzle and external pressure design
(OP)
Hi experts,
Please anyone suggest me about API620, as I am quite new for this code.
1. How can I calculate nozzle neck thickness? According to the code, it specifies only min. thk of the neck but nowhere indicate the calculation method.
2. If the tank is subjected to partial vacuum, How can I calculated the required thickness for this vacuum.
Thank you
Prasit
Please anyone suggest me about API620, as I am quite new for this code.
1. How can I calculate nozzle neck thickness? According to the code, it specifies only min. thk of the neck but nowhere indicate the calculation method.
2. If the tank is subjected to partial vacuum, How can I calculated the required thickness for this vacuum.
Thank you
Prasit





RE: API 620 nozzle and external pressure design
I don't think API-650 includes rules for vacuum design. It should state somewhere that tanks built to the standard are good for 1" water column or something of the sort. You could apply the rules from API-650, Appendix V, to API-620 tanks. You could also apply the rules from ASME B&PV Section VIII.