1 Scope
1.1 This part in NB/T 47003 specifies the requirements in design, manufacture, inspection and acceptance of silos for solid materials (hereinafter referred to as silos).
1.2 This part is applicable to steel or aluminium made welded vertical circular silos used for storing solid bulky materials, which the volume is greater than 15m3, the design pressure is larger than -500Pa and less than 0.1MPa, and the design temperature is the service temperature required by silos shell material.
The silos which the parameters exceed above parameter range may be designed and manufactured by reference to this part.
1.3 This standard is not applicable to the following siloses:
a) Silos directly embedded underground;
b) Siloses storing extremely or highly toxic medium;
c) Bunkers moved often;
d) Bunkers which the volume is less than or equal to 15m3.
Foreword 108
1 Scope 109
2 Normative References 109
3 Terms and Definitions 111
4 General Provisions 111
5 Materials 117
6 Design Calculation 133
8 Manufacturing, Inspection and Acceptance of Aluminium Silos 173
Annex A (Informative) Structure of Siloses for Solid Materials 176
