_ seconds before another reley operation can occur, thus setting o cdling on the dose rate range of each channel, The delay is provided by an RC circuit end clamping diode, and is initiated by a separate contact on the charging reley. 3.2 Recording System The output from the detector stations will bo recorded at a central recording room located in hold number four on the port side of the shaft alley, The roof of the recorder room is a slab of concrete approximately 12 inches thick, Tho recording devices consist of approximately 60 per ship, 20 pen Esterline=Angus operation recorders. See Tab F-l for c diagram of the detection and recording system, 3.3 Data Reduction System Soe Tab F~2 for block diagrams, 3.3.1 Genoral Approsch Autometic date reductionis provided, Input to the system is the set of strip charts removed from the operation recorders after each event, The preduct of the system is a set of plots on strip charts against time and logerithm of time of the followings total dose, logarithm of cose, dose rate,and logarithm of doso rate, Lineer plots of the dependent "veriables are discontinuous at decade points with the scale identified by margin marks, 323.2 automatic Dats Reader Four units for data receding are provided, Strip charts are fed by an operntion recorder chart drive between a miniature surgical lemp and ao phototube, The phototube pulses, produced by the doso increment marks on the chart, are delivered through an output cathode follower as approximately 70 millisecond pulses of about 1 volt amplitude. Chart drive is synchronized to power frequency. 3.3.3 Channol Identification Soction ST. bUVIG PRS 4 line synchronized digitel time base feeds, in paralle], two gated relays at differont points of the time base, geted relcys drive a biedirectional rotary stepping switch in The -opposito directions. The time base is triggered by incoming reader pulses which may arrive direct or vie a scale~of-ten, dotermined by alternate stops of the bi-directional switch, The gated roleys and the time base sort the pulse train into one of three pulse separation time categories: 4 105