1.1 *Scope
1.1.1 This standard is applicable to
a) Design;
b) Location;
c) Construction;
d) Operation;
e) Maintenance of storage, aerification, transportation, handling and truck transportation facilities liquefied natural gas (LNG) and natural gas liquefaction and personal training.
1.1.2 This standard is applicable to all kinds of LNG containers, including vacuum insulation system container.
1.1.3 This standard is not applicable to frozen ground container.
1.2 Equality
This standard permits using system, method or device with quality, intensity, fire resistance, validity, viability and safeness equal to or exceed that stated in this standard. The technical documents shall be submitted to competent department for argumentation of their equality. The system, method or device that adopted shall be approved by competent department.
1.3 Traceability
This standard reflects the unanimous opinion on taking necessary steps to guard against risks when the standard is issued.
Unless otherwise defined, the provisions of this standard shall be not applicable to the establishment, equipment, structure or device which has been constructed or approved before the effect of this standard. If there are explanations, it shall trace back to the provisions of this standard.
While the competent department determines that the existent situation has unacceptable risks, the competent department shall trace back to any part applicable to this standard.
If the competent department considers there are unpractical parts in this standard, and the security reasonable scale has been unequivocally established, the requirement of traceability of this standard may be amended.
1.4 Personal training
Personnel participating in LNG production, handling and storage shall join in the training at the aspects of LNG characteristics and risks.
1.5 System of units
The Si units of this standard are determined according to ASTM E 380 "Normative usage of International System of Units (SI)". For the calculation of clear distance, it shall correct to 0.5m when the English units are reduced to SI units. In one project, it shall not use two kinds of Units systems, in order to reduce clear distance.
1.6 Reference standard
This standard has reference to American and Canadian standards. While this standard is applied, it shall mention which America or Canadian standards are adopted. Without illustration, the user shall adopt United States Standards effective to all, or Canadian standards effective to all. If other standards are adopted, it shall give explanation.
GB/T 20368-2006 The following standards are cited：
