SY/T 6933.1-2013 Technical standard for natural gas liquefaction factory design construction and operation.Part 1: Design construction (English Version)
This part of SY/T 6993 specifies the technical requirements for the design and construction of natural gas liquefaction plant processes and other major systems. This section applies to the design and construction of new, renovated and expanded natural gas liquefaction plants on land.
GB 3836.11 Explosive atmospheres.Part11:Equipment protection by flameproof enclosures"d"method of test for ascertainment of maximum experimental safe gap
GB 3836.12 Explosive atmospheres.Part 12:Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting current