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1. 发明专利

JPS6186685A Method of detecting damage of nuclear fuel 失效
标题翻译：检测核燃料损害的方法
公开(公告)号：JPS6186685A
公开(公告)日：1986-05-02
申请号：JP20704784
申请日：1984-10-04
申请人： Nippon Atomic Ind Group Co , Toshiba Corp
发明人： TAMAOKI TETSUO
IPC分类号： G21C17/07 , G21C17/06

2. 发明专利

JPH02171691A ULTRASONIC SEEING-THROUGH DEVICE 失效
公开(公告)号：JPH02171691A
公开(公告)日：1990-07-03
申请号：JP32634788
申请日：1988-12-26
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAMAOKI TETSUO
IPC分类号： G21C17/08
摘要： PURPOSE:To enable an precise judgement of an existence of an obstacle and its location by acquiring an impulse response of a system which treats received signals from a reference reflector as input signals and received ultrasonic signals from a divided reflector as output signals, as a normalized reflection signal. CONSTITUTION:Ultrasonic reflectors 11 are arranged along an inner circumferential direction of an inner cylinder 6 in a nuclear reactor vessel 3, and are divided to a plurality of divided bodies. Each divided body is fixed to the inner cylinder 6 and has a plurality of series 13 of reflecting surfaces. Also, at a position circumferentially far from the reflector 11, the reference reflector 14 is located. An impulse response h(t) of a reflected wave y(t) from the reference reflector 11 corresponds to a reflected wave from the series 13 of the reflecting surfaces normalized, with making a reflected wave from the reference reflector 14 to be a standard, and also a strength of a reflected wave from each reflecting surface is quantitatively and precisely acquired. Therefore, with using strength of reflected waves acquired in this way and amounts of gaps' intervals at that moment, the amount of gaps' intervals at a measuring time is calculated through a proportional calculation. On an output display part 18, the corresponding amount of the gaps' intervals and therewith an existence and a position of an obstacle is precisely judged.

3. 发明专利

JPH01269089A BROKEN FUEL DETECTING METHOD AND BROKEN FUEL POSITION ESTIMATING METHOD FOR FAST REACTOR 失效
公开(公告)号：JPH01269089A
公开(公告)日：1989-10-26
申请号：JP9691288
申请日：1988-04-21
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SONODA YUKIO , TAMAOKI TETSUO
IPC分类号： G21C17/00 , G21C17/06 , G21C17/07
摘要： PURPOSE:To perform highly sensible fuel breakage detection by comparing the normal-time noise signal component contained in the detect signal of a delayed neutron detector provided at the coolant inlet, etc., of an intermediate heat exchanger with the detect signal from which the noise signal component is removed based on the estimation made from an autoregressive model. CONSTITUTION:Analog signals detected by a delayed neutron detector 1a are inputted to an A/D converter 3a and the furnace output of a fast reactor are detected by an output meter 1b and inputted to an autoregressive model implementing section 5 after the output is converted by an A/D converter 3b. The section 5 implements an autoregressive model from the successively inputted normal-time signals of the detector 1a, furnace output signals, and a prescribed formula and preserves the implemented model in a memory 6. At a background component removing section 7 the signal inferred from the autoregressive model is removed from the signals from the detector 1a and a reside signal is obtained. When the residue signal exceeds a threshold value, a broken fuel detecting section 8 decides that a broken fuel exists and inputs the decided result to a operation controlling rod selecting section 9.

4. 发明专利

JPS63247620A INSTRUMENT FOR MEASURING FLOW RATE OF COOLANT OF FAST NEUTRON REACTOR 失效
公开(公告)号：JPS63247620A
公开(公告)日：1988-10-14
申请号：JP7978687
申请日：1987-04-02
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAMAOKI TETSUO
IPC分类号： G01F1/712 , G21C17/02 , G21C17/032
摘要： PURPOSE:To permit measurement of a velocity of flow by making use of the component of Na by disposing two pieces of detector blocks contg. neutron detector groups, adding the detection signals obtd. from the respective blocks and calculating transfer time. CONSTITUTION:The detecting blocks 4, 4 spaced at a distance L are disposed on the outer circumference of a heat insulating material 3 provided on the outer circumference of a piping 2 in which a coolant or sodium 1 flows. The blocks 4 are disposed equally at every prescribed interval with the neutron detectors 5... around the piping. The detector signals of the detectors 5... in the respective blocks 4 are summed and are inputted to a correlative analysis part. The transfer time tau of the sodium 1 contg. Na between the two blocks is determined by the respective prescribed equations according to whether the component (x) by the influence of Na, etc., and the component (y) by the neutrons arriving directly from the furnace core exerting a simultaneous influence to the above-mentioned sum signal are in a correlative relation or not. The velocity of flow L/tau is then determined in a flow rate calculation part and further the flow rate is calculated from the determined velocity of flow.

5. 发明专利

JPH022408A DIAGNOSIS SUPPORTING SYSTEM FOR PLANT APPARATUS 失效
公开(公告)号：JPH022408A
公开(公告)日：1990-01-08
申请号：JP14671688
申请日：1988-06-16
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAMAOKI TETSUO
IPC分类号： G21C17/00 , G05B23/02 , G08B23/00 , G08B31/00 , G21D3/00
摘要： PURPOSE:To improve the support of operator's judgement by detecting the generation of abnormality at the initial stage of abnormality, automatically diagnosing an abnormal event by using a monitor index pattern and offering a guide for narrowing down two or more candidates. CONSTITUTION:Signals such as an analog process signal and an alarm signal indicating the state of a plant apparatus are inputted to a signal input part 2 and used for the detection and diagnosis of various abnormal events by a monitor index calculating part 3 and the features of changes of respective signals are expressed to calculate monitor indexes. These monitor indexes are stored in a monitor index calculated value storing part 5 and compared with a reference value by a reference value stored in an abnormality detecting reference value storing part 6 by an abnormality detecting part 4, and at the time of detecting the generation of abnormality, an automatic deciding part 7 is started. Thus, reference values and output messages for various abnormal events are stored in an index pattern reference value storing part 8. An output display/conversion processing part 10 displays the output messages successively from the one having the smallest evaluation function.

6. 发明专利

JPS62208106A SUPPORTING METHOD FOR PLANT INSPECTING WORK 失效
公开(公告)号：JPS62208106A
公开(公告)日：1987-09-12
申请号：JP5049086
申请日：1986-03-10
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SONODA YUKIO , TAMAOKI TETSUO
IPC分类号： G21C17/00 , G01R31/28 , G05B13/00 , G05B13/02 , G05B23/02 , G06F9/44 , G06N5/04 , G06Q10/04 , G21D3/00
摘要： PURPOSE:To support inspection work and to shorten an inspection period by inputting a state to be set up, inspection procedure and a result to an inference engine at the time of inspection, and estimating the input information based on recording information stored in a knowledge base. CONSTITUTION:When a worker selects an inspection item, a plant state to be set up is displayed from the knowledge base 1 prior to the inspection, and at the display of invalidity of setting, its corresponding operation is reinputted. When the validity of setting is decided, the preceding states of apparatuses are inputted prior to the inspection, and at the invalidity of setting, the setting state of an apparatus to be inspected is inputted. At the completion of the setting, the preparation of the inspection is ended and the inspection procedure is successively indicated. When the worker inputs various inspection information and measuring information, the results are decided, and at the time of failure, reinspection is indicated. Thus, the system allows the worker 5 to converse with each other about the knowledge base 1, the plant 3 or the states of the constitutional apparatuses 4, inputs the inspection item and the inspection information to the inference engine (program) 2 and decides the results so as to provide the worker with a proper instruction and support the inspection.

7. 发明专利

JPS6186686A Detector for damage of fuel 失效
标题翻译：燃料损坏检测仪
公开(公告)号：JPS6186686A
公开(公告)日：1986-05-02
申请号：JP20704884
申请日：1984-10-04
申请人： Nippon Atomic Ind Group Co , Toshiba Corp
发明人： TAMAOKI TETSUO , SONODA YUKIO
IPC分类号： G21C17/07 , G21C17/06

8. 发明专利

JPS6491211A ALARM PROCESSING DIAGNOSING DEVICE 失效
公开(公告)号：JPS6491211A
公开(公告)日：1989-04-10
申请号：JP24588187
申请日：1987-10-01
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAMAOKI TETSUO
IPC分类号： G21C17/00 , G05B23/02 , G08B25/00 , G08B31/00
摘要： PURPOSE:To surely judge the situation for an operator by displaying the causing event of the abnormality in addition to a first alarm in case the abnormality occurs at a large-scale plant and many alarms are produced. CONSTITUTION:When a plant signal is supplied from a plant 9, an alarm process diagnosing device 1 checks whether an estimated alarm is produced or not for the input plant signal based on the data stored in a knowledge data base 7. If so, the presence or absence of a new alarm is checked. When the 'presence' of a new alarm is confirmed, a first occurrence alarm, the newest and most downstream occurrence alarm, and the most important alarm are decided based on the state signal of a device for estimation of the next alarm. Then the genuine cause is decided every plural causing events for those causes of the first occurrence alarm and the result of this decision is displayed on a CRT.

9. 发明专利

JPS61259302A ABNORMAL TIME DISPOSING DECIDING DEVICE FOR PLANT 失效
公开(公告)号：JPS61259302A
公开(公告)日：1986-11-17
申请号：JP9969385
申请日：1985-05-13
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAMAOKI TETSUO , SONODA YUKIO
IPC分类号： G05B9/02 , G05B23/02 , G21C17/00 , G21D3/04
摘要： PURPOSE:To enhance the safety of a plant and to improve the working ratio by deciding the suitable disposition in accordance with the significance of the abnormality detecting signal of the plant and displaying this decision. CONSTITUTION:When the abnormal signal of a plant 1 is detected by an abnormality supervising device 3, an abnormal time disposing deciding device 4 is started. Next, the device 4 investigates whether or not the signal, in which the abnormality is detected, is the abnormal signal of A rank. When the signal is judged to be the abnormal signal of A rank, immediately the plant safety stop disposition for it is displayed at a displaying device 5. When the signal is judged not to be the abnormal signal of A rank, the abnormality recovering disposition prepared in accordance with the abnormal cause is decided and this is displayed. Thus, the safety of the plant can be enhanced. Since the unnecessary plant stop is avoided, the plant working ratio can be improved.

10. 发明专利

JPS61228501A METHOD FOR DECIDING TREATMENT OF PLANT ABNORMALITY 失效
公开(公告)号：JPS61228501A
公开(公告)日：1986-10-11
申请号：JP6668785
申请日：1985-04-01
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SONODA YUKIO , TAMAOKI TETSUO
IPC分类号： G05B9/02 , G05B23/02 , G21C17/00
摘要： PURPOSE:To improve the safety and the working efficiency of a plant by utilizing the knowledge of the interlocking method of an automatic safety protection system for an atomic or thermoelectric power plant, etc. and the knowledge of the physical causal relation of an abnormal phenomenon to produce a cause- effect chart of the abnormality and studying the cause of the abnormality and its present state and then estimating its future state. CONSTITUTION:The monitor data obtained from a plant 1 consisting of a large- scale system is supplied to an abnormality process deciding device 2 as well as an input device 7. The device 2 contains an alarm table 3, a knowledge base 4, a reasoning part 5 and a display device 6. The alarm signal, the signal showing the start/stop of devices and the output signal of the device 7 which monitors the analog quantity and detects the abnormality are supplied to the table 3. While the base 4 stores the knowledge showing the name and the importance degree of the alarm and the knowledge of the physical causal relation of the fault. The part 5 studies the cause of the fault and its present state and also estimates the future state of the abnormality to display them on the device 6.

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