A system includes a gas distribution network having sub-networks including a first sub-network, each sub-network including a pipe section having a gas safety device coupled to a gas safety valve. The gas safety device includes a pressure sensor, a shut off controller configured to shut off the gas safety valve, a computing device, and a communications module. A server is communicably coupled to the communications modules of the gas safety devices for that implements artificial intelligence (AI) which based on a current threat condition to the gas distribution network determines affected sub-networks. The server is for sending of a valve closing instruction signal to the gas safety device in the first sub-network during the current threat condition when the current threat condition is determined to affect the first sub-network. Responsive to the valve closing instruction signal, the gas safety device shuts off the gas safety valve in the first sub-network.