When a remote, emergency shut-down switch (ESS) is required by ASME CSD-1 or the NBIC, it shall be located within 50 feet of the boiler. When more than one boiler is installed in a room, a single ESS shall be installed that, when activated, shall shut down the fuel or energy supply to each boiler installed in the room.
229 Neb. Admin. Code, ch. 18, § 007