A steam generator serves as a power generation equipment that uses the expansive of to generate electricity. The startup process plays an important in plant adjust its electricity response changes load demand. As renewable plants increase, levels variability production increase. Fast startups become instrumental they enable traditional provide quantity missing when variable energies cannot sati...

This paper presents a generalized likelihood ratio technique for detection of defect locations from bobbin coil eddy current data. First a Neyman±Pearson (NP) decision rule for detection of known random signals (in presence of noise) is discussed. The result is then generalized to the problem of detection of unknown random signals that are commonly found in bobbin coil eddy current data. The pe...

The significance determination process (SDP) provides a method to place inspection findings in context for risk significance in a manner that allows them to be combined with other plant performance results. This information is used to determine the level of NRC engagement in accordance with the Reactor Oversight Process. This appendix is used in conjunction with Inspection Procedure (IP) 71111....

OVERVIEW: Along with advances in system component technologies, modern state-of-the-art power plant control systems are being developed by incorporating such advanced technologies as extensive digitization of high-speed control circuits, interconnection with other equipment over open interfaces, and a repertory of diverse multiplexed systems. Based on Hitachi Integrated Autonomic Control System...

The principal leak detection system for primary to secondary leaks is monitoring of the Nitrogen-16 activity in the live steam at the exit of the steam generators (SG). This is supplemented by tritium measurement in the condensate or feedwater, Xenon measurement in the incondensible gases exhausted from the condenser and radioelement detection in the steam generator blowdowns. Tritium is especi...

Wednesday, May 28, 2003 9:30 a.m. Meeting with Advisory Committee on the Medical Uses of Isotopes (ACMUI) (Public Meeting) (Contact: Angela Williamson, 301– 415–5030) This meeting will be webcast live at the Web address—http://www.nrc.gov 2:45 p.m. Discussion of Management Issues (Closed—Ex. 2) Thursday, May 29, 2003 9:30 a.m. Briefing on Status of Revisions to the Regulatory Framework for Stea...

The Commission has issued the enclosed Amendment No. 198 to Facility Operating License No. DPR-72 for Crystal River Unit 3 (CR-3). The amendment consists of changes to the existing Technical Specifications (TS) in response to your letter dated March 21, 2001, as supplemented June 28, 2001. Florida Power Corporation (FPC) submitted a request for changes to the CR-3 Improved Technical Specificati...

This paper expounds the 3D modelling of the MFL imaging system to monitoring the outer surface defects in Ferromagnetic Steam Generator Tube (SGT). It features a new flaw detection technique in conjunction with the Magnetic Flux Leakage (MFL) inspection and Digital Imaging. It delivers information of the defective tube surface in the form of a digital image. The impact of variation in the dimen...

This paper deals with the analysis of nonlinear reachability and fault tolerant properties of multiactuator nonlinear systems. In this case, the process is a steam generator process containing a set of actuators. After occurrence of one or several actuator faults detected and isolated by Fault Detection and Isolation (FDI) approaches, a quantitative analysis of the faulty system properties help...

Performance of a gas turbine mainly depends on the inlet air temperature. The power output of a gas turbine depends on the flow of mass through it. This is precisely the reason why on hot days, when air is less dense, power output falls. The objective here is to assess the advanced systems applied in reducing the gas turbine intake air temperature and examine the merits from integration of the ...