| Includes | systems and equipment for the detection and notification of gas presence. |
| Alternate Terms/Abbreviations | GUI: graphical user interface. |
| See | 23 10 00 for facility fuel systems. 28 40 00 for security monitoring and control. 28 43 00 for fuel-oil detection and alarm. 28 60 00 for mass notification. 28 80 00 for fire detection and alarm. 33 50 00 for fuel distribution utilities. 40 10 00 for fuel gases process piping. |