This standard specifies the type, model and basic parameters, requirements, safety and protection, test methods, inspection rules, marking, packaging, transportation and storage of liquid nitrogen pumping equipment for oil and natural gas drills. This standard applies to the design, manufacturing and quality inspection of liquid nitrogen pumping equipment.
SY/T 7087-2016 Referenced Document
GB 1495 Limits and measurement methods for noise emitted by accelerating motor vethicles
GB 3836.2 Explosive atmospheres.Part 2:Equipment protection by flameproof enclosures "d"
GB 7251.1 Low-voltage switchgear and controlgear assemblies.Part 1:General rules
GB 7251.2 Low-voltage switchgear and controlgear assemblies. Part 2: Particular requirements for busbar trunking systems (busways)
GB 7251.3 Low-voltage switchgear and controlgear assemblies. Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use. Distribution boards
GB 7258 Amendment No. 2 to Technical Conditions for Motor Vehicle Operation Safety
GB/T 7251.8 Low-voltage switchgear and controlgear assemblies—Part 8: General technical requirements for intelligent assembly*， 2020-11-19 Update
GB/T 7932 Pneumatic fluid power-General rules and safety requirements for systems and their components*， 2017-07-12 Update
GB/T 7935 Hydraulic fluid power.General requirements for hydraulic components
GB/T 8923.1 Preparation of steel substrates before application of paints and related products.Visual assessment of surface cleanliness.Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coa