Liquefied natural gas (LNG) - Production, storage, and handling

1.1
This Standard applies to the 

a) design; 
b) location; 
c) construction; 
d) operation; and 
e) maintenance 

of facilities for the liquefaction of natural gas and facilities for the storage, vaporization, transfer, handling, and truck transport of LNG. It also contains requirements for the training of personnel. 

1.2

1.2.1
For facilities that load or unload LNG from a marine vessel, this Standard contains requirements for the interconnecting piping between the loading/unloading arm flange and the storage tank(s), and other piping and appurtenances on the pier or jetty itself. 

1.2.2
Guidelines for LNG vehicle fuelling stations used for fleet and public LNG vehicle fuel dispensing operations are given in Annex D. (See the definition of "Fuelling station" in Clause D.2.) 

1.2.3
The requirements for small LNG facilities are given in Annex B. (See the definition of "Small facility" in Clause 3.) 

1.2.4
The requirements for mobile and portable LNG equipment used on a temporary or permanent basis are covered in Annex B. 

1.3
This Standard does not apply to the following: 

a) frozen ground containers; 
b) floating LNG facilities; 
c) the transportation of refrigerants by any means; 
d) the transportation of LNG by railcar or marine vessel; 
e) the transportation of LNG or regasified LNG by pipeline beyond the facility boundary, except as specified in Clause 1.2.1; and
f) facilities designed for the use of LNG as a fuel for railroad locomotives, or marine vessels. 

1.4
All references to pressure throughout this Standard refer to gauge pressures unless otherwise specified. 

1.5
All pipe sizes refer to nominal pipe sizes (NPS). 

1.6
The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. 

1.7
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. 

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. 

Notes to tables and figures are considered part of the table or figure and may be written as requirements. 

Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.