Patent Application
20090106001
The present invention relates to a test facility; more particularly, relates to providing applications of new failure modes related to software safety analysis and deduction.
When are a reactor of a common high pressure core flooder control facility encounters an emergency of water out-flow, an emergency core cooling system is activated automatically. At the time, because the high pressure core flooder control facility is designed to have a high output pressure, a water suction from a suppression pool or a condensate storage tank is immediately filled into a reactor before the reactor pressure is lowered. Then, water is supplied by an automatic depressurization system and a low pressure core flooder system to maintain a water level for ensuring cooling and avoiding over-heating of fuel core. These are the ideal operations of the high pressure core flooder control facility. In general, a test device is required for the high pressure core flooder control facility; and a test software is developed for the test device. Yet, once the test device is malfunctioned, the test software may be malfunctioned as well. Thus, damage may be expanded and response may be not good enough owing to short of overall considerations on nuclear safety and control. Hence, the prior art does not fulfill all users' requests on actual use.
The main purpose of the present invention is to provide applications of new failure modes related to software safety analysis and deduction by integrating a nuclear power plant simulation facility and a high pressure core flooder control facility through a hardware input/output (I/O) module and a quality guarantee network.
To achieve the above purpose, the present invention is a digital instrument-and-control (I&C) software failure simulation test facility, comprising a nuclear power plant simulation facility having a software-based simulator; a controller comprising a high pressure core flooder controller and a simulation logic controller; and a graphic user control interface monitoring a high pressure core flooder control facility and an engineered safety features actuation control system, where applications of new failure modes related to software safety analysis and deduction are provided by integrating the nuclear power plant simulation facility and the high pressure core flooder control facility through a hardware I/O module and a quality guarantee network. Accordingly, a novel digital I&C software failure simulation test facility is obtained.
The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in conjunction with the accompanying drawings, in which
The following description of the preferred embodiment is provided to understand the features and the structures of the present invention.
Please refer to
The nuclear power plant simulation facility 1 is a software-based simulator, comprising a system calculation module 11 and a core thermal power calculation module 12. The system calculation module 11 comprises a control flow management module 111, an interface processing module 112 and a database processing module 113. The core thermal power calculation module 12 comprises a common calculation module 121, a simulation calculation module 122 and simulation calculation module 122 and a historical records management module 123.
The controller 2 comprises a high pressure core flooder controller 21 and a simulation logic controller 22.
The graphic user control interface 3 monitors a high pressure core flooder control facility and an engineered safety features actuation control system.
The nuclear power plant simulation facility 1 and the controller 2 are connected through a communication interface of a hard-wired connection 42 and TCP/IP protocol 43; and the controller 2 and the graphic user control interface 3 are connected through a quality guarantee network 5.
Please further refer to
Through a combination of a dynamic link library (DLL) and the nuclear power plant simulation facility 1, data at hardware input/output (I/O) ends are accessed to link the nuclear power plant simulation facility 1 and a part of the simulation logic controller 22.
On processing a software simulation, two paths are obtained by the nuclear power plant simulation facility 1 for the software simulation, which are an initial software running path 13a and a routine software running path 13b. On running the software, default parameters are loaded 15 through the database processing module 14 for an initial calculation 16. Then an operation interface is activated 17 to finish the initial software running path 13a. On running the routine software running path 13b, an operation mode is decided 18 to process a calculation. The calculation contains some basic theological calculations using logic decisions in the initial calculation 16. On processing a simulation 19, a time base for a calculation is 500 milli-seconds (msec) and an interval between calculations is another 500 msec. After all calculations are finished, calculation results are asked whether to be stored or not 20.
Please refer to
Take a graphic user control interface of a high pressure core flooder control facility in the B series as an example. The P-0001B control pump 7a is initially integrated in the system for developing a test software. Control logic areas of the high pressure core flooder control facility are corresponding to the test software for feeding data through a software input interface 8a and reading data from a software output interface 8b. Furthermore, an I/O module is provided to access a hardware output interface 8c and a hardware input interface 8d. With the above structure, the hardware of the high pressure core flooder control facility is setup and tested and the software for the hardware is tested too.
On testing an integration of the present invention which is shown in
As shown in
On testing the P-0001B control pump 7a, a start button on the graphic user control interface 3 is pressed. Then a control valve corresponding to the high pressure core flooder control facility of the nuclear power plant simulation facility 1 is started. And then a start reaction is shown on the graphic user control interface 3. In the other hand, on testing the M-0007B control valve 6e, another start button on the graphic user control interface 3 is pressed. A control pump corresponding to the high pressure core flooder control facility of the nuclear power plant simulation facility 1 is started then. A start reaction is thus shown on the graphic user control interface 3. In this way, the integration of the nuclear power plant simulation facility 1 and the high pressure core flooder control facility is tested and shown. And data are thus transparent between the two systems through the hardware I/O module and a quality guarantee network to provide applications of new failure modes related to software safety analysis and deduction.
To sum up, the present invention is a digital I&C software failure simulation test facility, where a nuclear power plant simulation facility and a high pressure core flooder control facility are integrated through a hardware I/O module and a quality guarantee network to provide applications of new failure modes related to software safety analysis and deduction.
The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.
