标准号:IS 11552-1986
发布日期:1986/7/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.Covers all liquid nitrogen vessels of double walled multilayer, vacuum insulated con-struction and of capacities 2 to 50 litres. These vessels are also termed vacuum vessels.1.1 This standard is divided into two sections. Section 1 covers liquid nitrogen vessels for storage and transportation purposes and Section 2 covers automatic dispenser units for the safe and economical transfer of liquid nitrogen under self pressure or external pressure conditions.