This code applies to the installation, operation, inspection and supervision of governors (governor
stations) and valve stations among the gas facilities of gas wholesale business operators (inclusive
of the installers of gas supply installations other than urban gas business operators in conformity
to the Act, Article 39-2, Clause 1) in conformity to the Urban Gas Business Act (hereinafter to be
referred to as “the Act”), Article 2, 2 and 5.
1. General.........................................................................................................................................................................................1
1.1 Scope................................................................................................................................................................................1
1.2 Validity of Code ...........................................................................................................................................................1
1.3 Definitions ......................................................................................................................................................................1
1.4 Application of Other Codes (currently not used) ......................................................................................4
1.5 Interim Measures.........................................................................................................................................................4
1.5.1 Interim measure for vent stacks in govenor stations and valve stations............................4
1.5.2 Interim measure for facility standard and technical standard <Revised on July 26, 2013> ...........................................................................................................................................................................4
1.5.3 Interim measures for piping materials <Newly established on July 26, 2013>...............5
1.5.4 Interim measures for overpressure safety devices <Newly established on July 26, 2013>..............................................................................................................................................................................6
1.6 Restriction to Use of Appliances..........................................................................................................................6
2. Installation Standard..............................................................................................................................................................6
2.1 Layout Standard...........................................................................................................................................................6
2.2 Foundation Standard.................................................................................................................................................7
2.3 Storage Facility Standard (not applicable).......................................................................................................7
2.4. Governor Station (Valve Station) Standard<Newly established on July 26, 2013>....................7
2.4.1 Materials of governor stations (valve stations) ................................................................................7
2.4.2 Construction of governor station (valve station) ............................................................................7
2.4.3 Thickness and strength of governor station (valve station).......................................................8
2.4.4 Installation of governor (station) ............................................................................................................8
2.5 Piping Facility Standard <Revised on July 26, 2013> ..............................................................................8
2.5.1 Preparation of piping drawings...............................................................................................................8
2.5.2 Materials of piping facilities.............
