ML17317A931
| ML17317A931 | |
| Person / Time | |
|---|---|
| Site: | Kansas State University |
| Issue date: | 11/07/2017 |
| From: | Edward Helvenston Research and Test Reactors Licensing Projects Branch |
| To: | |
| Helvenston E, NRR/DLP, 415-4067 | |
| References | |
| Download: ML17317A931 (1) | |
Text
Percent Power / Pulse Cooling Sys. Control Rod Pos.
Component Manual Scram Switch Automatic Flux Control System Rod Control Fuel TC Gauges Water TC Gauges Area Rad Monitors Log Channel Linear Channel Channel Control Conductivity Monitor Indicators None, but initiate Determine pulse fuel temperature 10 kW pulse interlock (SAR reactivity (via IRW, SAR SAR Accident Safety Function Initiate scram (SAR 13.2.2) None None scram None None 13.2.3) None None None None 13.2.3)
Hinged bar, simultaneously Regulating rod is moved in response to Newport INFCT Newport INFCT digital Pushbutton indicators reading depresses four individual rod difference between % demand Push button control to drive digital TC gauges TC gauges with relay Thermo RMS 2 detectors with swith to Foxboro analytical output from 10-turn magnet / solenoid power potentiometer and percent of scale on rods UP and DOWN, transient with relay output to output to water temp remote analog readouts in control energize cooling analog conductivity potentiometers Description, Existing switches to drop rods multirange power channel (GA NMP-1000) rod FIRE fuel temp scram alarm room GA NLW-1000 GA NMP-1000 GA NPP-1000 pump relays gauge with alarm light coupled to rod drives GA instruments replaced with equivalent Thermo instruments (NLW-1000 --> TR-30, NMP-1000 --> TR-10-5, NPP-1000 --> Thermo pulse power channel). The display will consist of a bar graph indicator and LED readout, plus an SV-180 digital strip chart Regulating rod will be moved in response to No changes in function or basic recorder. All interlocks will be identical to extant system except log and multirange Thermo Orion 2100 the difference between % demand layout, although exact form of Thermo RMS 3 detectors with linear channels will feature redundant interlocks. The digital bar graph / LED indicators series Ph and Red button, cuts current to all potentiometer and percent of scale on the shim buttons needs to be remote digital readouts in control are digital, not analog, but similar systems are in use at Oregron State and UC-Irvine. conductivity analyzer Description, Replacement magnet / solenoid circuits TR 30 Log / Linear power range monitor. determined. No change No change room Fission chamber, CIC, and UIC will be replaced with new units manufactured by Thermo. No change with digital indicator No change Analog Safety Functions Changed to Digital No No No No No No No No No No No No Analog Indicators Changed to Digital None No No No No Yes Yes Yes Yes No Yes No 50.59 Screening Questions - Answer "Yes" or "No" Decrease SSC design function reliability when failure would initiate an accident No No No No No No No No No No No No Decrease SSC design function reliability when failure would mitigate accident No No No No No No No No No No No No Reduce redundancy, reliability or defense in depth No No No No No No No No No No No No Add or delete an automatic or manual design function of an SSC No No No No No No No No No No No No Convert an automatic feature to manual or vice versa No No No No No No No No No No No No Adversely affect ability to perform required actions No No No No No No No No No No No No Adversely affect time response of required actions No No No No No No No No No No No No Degrade seismic or environmental qualification No No No No No No No No No No No No Affect method of evaluation used to establish design basis or safety analysis No No No No No No No No No No No No Introduce an unwanted or previously unreveiwed system or material interaction No No No No No No No No No No No No (Not described in SAR) indirect effects on electrical distribution No No No No No No No No No No No No (Not described in SAR) indirect effects structural integrity No No No No No No No No No No No No (Not described in SAR) indirect effects on environmental conditions No No No No No No No No No No No No (Not described in SAR) indirect effects on other SAR design functions No No No No No No No No No No No No