10 CFR 50.71(e) - Maritime Administration - U.S. Department of ...

Updated Final Safety Analysis Report - (STS-004-002)10 INSTRUMENTATION AND CONTROL10.1 General DescriptionAll of the instrumentation and control equipment is deactivated, disabled and performs no active function.The reactor instrumentation and control was divided into the following five major systems:1. Control rod drive (CRD) system;2. Nuclear instrumentation (NI) system;3. Safety system;4. Non-nuclear instrumentation and,5. Radiation monitoring (RM) system.10.2 Plant Control Arrangement10.2.1 IntroductionThe ship’s nuclear power plant was controlled both remotely and locally. Remote automatic control andmanual control was achieved through the following six basic control areas:1. Main control room;2. Hydraulic power supply room;3. GE cubicle;4. Emergency generator room; and,5. Forward control area.The functions and contents of each control area are described in the following sections.10.2.2 Main Control RoomThe main control room houses most of the control equipment for the nuclear power plant, the mainswitchboard for the ship, and several small distribution panels. This control area is aft of the machineryspace on D-deck; entrances are from the machinery space, the crew’s passages on C-deck, andinstrument-electrical shop through a water-tight door.The main control console is located between the machinery space entrances in the center-forward sectionof the control room. The main electrical switchboard extends across the aft bulkhead of the control room.A rubber-matted false floor extends across the entire length behind this main switchboard. The RMsystem cabinets are aft of the starboard machinery space entrance, and the instrumentation and safetysystem cabinets are aft of the port machinery space entrance. Three transformers and the automatic bustransfer panel are located in the aft port corner. In the aft starboard corner are the vent control panel and awatertight door, which allows access to the instrument and electrical machine shop. The port side of thecontrol room is open to the hot and cold water chemistry laboratory, where routine analytical tests areperformed for maintenance of water standards.The main control console occupies a rectangular area 19 feet by 7 feet in the center portion of the maincontrol room. Several angular console sections form a semicircular panel, which faces forward. Mountedon the top of the vertical sections of the console is the annunciator panel. The console consists of avertical panel mounted on an operating desk.Rev. VI 121