System and method for imposing and enforcing conditions upon the circumstances under which an unlock command may be sent and honored by a locking device

A safety system for use at a facility with one or more systems of equipment having one or more isolation points, said facility having one or more gateway units installed therein, wherein said one or more gateway units are configured to receive broadcast message frames and relay payload data of said message frames to a computing platform via a network, said safety system comprising:

• a lock comprising:
• a shackle arranged to be able to assume an unlocked state and a locked state;
• a processing unit, having a port;
• a first transceiver communicably connected with said processing unit;
• a second transceiver communicably connected with said processing unit;
• and
• a memory communicably connected with and readable by said processing unit, said memory containing instructions that, when executed by the processing unit cause the processing unit to:
• receive and respond to incoming commands received by said first transceiver;
• send a heartbeat message via said second transceiver for reception by said one or more gateway units and subsequent relay to said computing platform;
• and
• send a shackle-unlocked message via said second transceiver in response to a signal received via said port indicating that said shackle has undergone a transition from said locked state to said unlocked state, for reception by said one or more gateway units and subsequent relay to said computing platform;
• and
• a mobile device comprising:
• a second processing unit;
• a third transceiver communicably connected with said second processing unit;
• a fourth transceiver communicably connected with said second processing unit;
• an input/output device operably connected with said second processing unit;
• a second memory communicably connected with and readable by said second processing unit, said second memory containing instructions that, when executed by said second processing unit cause said second processing unit to:
• permit a user of said mobile device to login;
• open a network connection with said computing platform;
• permit said user to identify a selected system from among said one or more systems of equipment;
• send a get-system-information message to said computing platform, via said third transceiver, wherein said get-system-information message includes data indicating said selected system;
• receive a response to said get-system-information message, via said third transceiver, wherein said response includes safety information pertaining to whether said selected system is in a safe state to service;
• present said safety information via said input/output device;
• and
• receive, via said network connection, an asynchronous message from said computing platform, and, in response to said asynchronous message, send a second get-system-information message to said computing platform, receive a response to said second get-system-information message, wherein said response includes updated safety information pertaining to whether said selected system is in a safe state to service, and present said updated safety data via said input/output device.