2. Refrigerated and cryogenic tanks
2.1 General
As we saw in BM 6 590 (§ 3.2), liquefied gases can be stored at full pressure at ambient temperature, at reduced pressure in semi-refrigerated storage, or at atmospheric pressure. To reach the latter state, their temperature must be lowered, by an appropriate refrigeration system, to their normal boiling point. In the absence of pressure, they can thus be stored in simple vertical cylindrical tanks with flat bottoms. These storage units necessarily include high-performance thermal insulation that completely encapsulates the cold container to prevent the refrigerated product from heating up.
This storage method is generally considered to be an economical solution for handling large quantities of liquefied gas,...
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Refrigerated and cryogenic tanks
1. Design and construction codes
1.1 Storage at ambient temperature. Atmospheric tanks
The best-known and most frequently used codes and standards are as follows:
• Code CODRES (France) drawn up by the Syndicat National de la Chaudronnerie, de la Tôlerie et de la Tuyauterie Industrielle (SNCT) and the Union des Chambres Syndicales de l'Industrie du Pétrole (UCSIP).
...
2. Quality of steels used
2.1 Storage at room temperature
Atmospheric tanks
Low- and high-pressure reservoirs
The steels used are generally selected from those covered by the following standards:
• structural steels (atmospheric and low-pressure tanks)
NF EN 10 025 (France): this...
References
Standards and regulations
French Standards Association (AFNOR)
- Produits laminés à chaud en aciers de construction non alliés. Conditions techniques de livraison - Indice de classement : A 35-501 (remplace NF A 35-501). - NF EN 10025 -
- Produits plats en acier pour appareils à pression. Indice de classement : A 36-205. - NF EN 10028 -
- Prescriptions générales. - Partie 1 -
- Aciers non alliés...
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