This Code applies to the facilities, technology and inspection of refueling installations for liquefied city gas automobiles [installations for refueling of automobiles (inclusive of yard tractors in conformity to the Enforcement Decree of the Harbor Act, Table 4, No.8) with liquefied city gas supplied through piping or storage tanks; hereinafter referred to as “refueling installations”] among gas refueling facilities in conformity to the Enforcement Regulation of the Urban Gas Business Act (hereinafter referred to as “Enforcement Regulation”), Article 2, Clause 4, No.3. <Revised on January 7, 2015>
1. General 1
1.1 Scope 1
1.2 Validity of Code 1
1.3 Definitions 1
1.4 Application of Codes (currently not used) 4
1.5 Interim Measures (not applicable) 4
1.6 Restriction on Use of Appliances 5
2. Installation Standard 5
2.1 Layout standard 5
2.1.1 Distance from protected installations 5
2.1.2 Distance from naked lights 6
2.1.3 Distance from other facilities (currently not used) 6
2.1.4 Distance from business place perimeter 6
2.1.5 Distance from road boundary 7
2.1.6 Distance from railroad 7
2.2 Foundation Standard 7
2.2.1 Soil survey 8
2.2.2 Foundation works 11
2.2.3 Fixation of storage tanks 13
2.3 Storage Facility Standard 17
2.3.1 Materials of storage facilities 17
2.3.2 Construction of storage facilities 17
2.3.3 Installation of storage facilities 17
2.4 Gas Facility Standard 21
2.4.1 Materials of gas facilities 22
2.4.2 Construction of gas facilities 22
2.4.3 Thickness and strength of gas facilities 22
2.4.4 Installation of gas facilities 28
2.4.5 Performance of gas facilities 29
2.5 Piping Standard 30
2.5.1 Piping materials 30
2.5.2 Configuration of piping systems 38
2.5.3 Thickness of piping facilities 39
2.5.4 Jointing of piping facilities 40
2.5.5 Measures for absorption of expansion and contraction of piping 41
2.5.6 Electric insulation of piping 42
2.5.7 Installation of piping 43
2.5.8 Installation of associated piping facilities 54
2.5.9 Performance of piping facilities 57
2.5.10 Marking of piping systems 57
2.6 Accident Prevention Facility Standard 58
2.6.1 Installation of overpressure safety devices 58
2.6.2 Installation of gas leak alarm and automatic shutoff systems 71
2.6.3 Installation of emergency shutoff devices 75
2.6.4 Installation of backflow prevention devices (currently not used) 78
2.6.5 Installation of backfire prevention devices (currently not used) 78
2.6.6 Installation of hazard monitors and controllers (currently not used) 78
2.6.7 Installation of accidental start prevention devices 78
2.6.8 Installation of explosion-proof electric facilities 78
2.6.9 Installation of ventilation systems 78
2.6.10 Installation of corrosion protection systems 79
2.6.11 Installation of static eliminators 80
2.6.12 Installation of toppling prevention devices (not applicable) 81
2.6.13 Installation of insulation facilities (currently not used) 81
2.6.14 Installation of emergency release couplers (currently not used) 81
2.6.15 Installation of protection facilities for refueling dispensers 81
2.6.16 Installation of automatic gas supply cutoff devices 81
2.7 Damage Control Facility Standard 81
2.7.1 Installation of dikes 81
2.7.2 Installation of protection walls 82
2.7.3 Installation of sprinkler systems (currently not used) 86
2.7.4 Installation of detoxification facilities (not applicable) 86
2.7.5 Installation of neutralization and transfer facilities (not applicable) 86
2.7.6 Installation of wind indicators (not applicable) 86
2.7.7 Installation of fire extinguishing facilities 86
2.7.8 Installation of passages 86
2.7.9 Installation of temperature rise prevention facilities 87
2.8 Associated Facilities Standard 89
2.8.1 Installation of measuring facilities 89
2.8.2 Installation of emergency power systems 90
2.8.3 Installation of communication systems 91
2.8.4 Installation of operation facilities 91
2.9 Marking Standard 92
2.9.1 Boundary markings and warning signs 92
2.9.2 Identification marks and hazard signs (not applicable) 95
2.9.3 Perimeter fences 95
3. Technical Standard 95
3.1 Safety Maintenance Standard 95
3.1.1 Maintenance of foundations (currently not used) 96
3.1.2 Maintenance of storage facilities 96
3.1.3 Maintenance of gas facilities 99
3.1.4 Maintenance of piping systems 102
3.1.5 Maintenance of accident prevention facilities 102
3.1.6 Maintenance of damage control facilities (currently not used) 102
3.1.7 Maintenance of utilities 103
3.2 Manufacturing and Refueling Standard 103
3.2.1 Preparation for manufacturin
