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1. 发明专利

JPS5657976A SPACE DOSE EVALUATING METHOD FROM ATOMIC POWER FACILITIES 失效
公开(公告)号：JPS5657976A
公开(公告)日：1981-05-20
申请号：JP13245679
申请日：1979-10-16
申请人： NIPPON ATOMIC IND GROUP CO , TOKYO SHIBAURA ELECTRIC CO , TOKYO ELECTRIC POWER CO , DENRIYOKU CHUO KENKYUSHO
发明人： KOYAMA KAZUHIKO , KITADA YOSHIO , TSUNODA TOMIO
IPC分类号： G01T1/16 , G01T1/167 , G01T7/00
摘要： PURPOSE:To easily and surely measure the dose of radiations occuring in the radioactive clouds from atomic power facilities by identifying whether there is an effect of radioactive clouds or not by the use of the standard deviation values of dose rate changes. CONSTITUTION:The standard deviation values are obtained from the measured outputs of the peripheral space dose rate measuring apparatus disposed around the atomic power facilities and when they exceed the predetermined threshold value, it is identified that there is an effect of the radioactive clouds from the atomic power facilities in the measured outputs. The measured output mean values just before and after the time zone where the indentification was made are compared with the highest frequency of the natural radiation dose rate frequency distribution where there is no effect of the radioactive clouds from the facilities at the nonrainfall time extending over a relatively longtime, at the nonrainfall time and with the minimum value of the time zone where the identification was made at the rainfall, and th minimum value out of these is subtracted from the measured output of the time zone where the identification was made, and the remaining amounts are integrated.

2. 发明专利

JPS60128375A SPOTTING METHOD OF IMPACT POSITION 失效
公开(公告)号：JPS60128375A
公开(公告)日：1985-07-09
申请号：JP23640883
申请日：1983-12-16
申请人： TOKYO ELECTRIC POWER CO , TOHOKU ELECTRIC POWER CO , CHUBU ELECTRIC POWER , HOKURIKU ELECTRIC POWER , CHUGOKU ELECTRIC POWER , NIPPON GENSHIRYOKU HATSUDEN , TOSHIBA KK , NIPPON ATOMIC IND GROUP CO
发明人： HAMADA KENJIROU , HIRATA KAZUYA , ITOU TAKAHIKO , SENDAI KOUICHIROU , SUGAYA AKIRA , MORIOKA TOSHIHIKO , KOYAMA KAZUHIKO , TSUNEOKA OSAMU , SANO KENICHI , TSUNODA TOMIO
IPC分类号： G01S5/18 , F41J5/056 , F41J5/06 , G01B17/00 , G01B21/00 , G01S5/22 , G01S5/26
摘要： PURPOSE:To shorten a position spotting time by storing time differences between respective meshes in a spotting area and the 1st and the 2nd couples of impact sound detection points in respective meshes, generating the 1st and the 2nd time difference maps, and superposing them one over another. CONSTITUTION:For example, an impact sound is generated in the spotting area A on the surface of metal, the detection time difference DELTAt1 between both impact sound detectors Da and Db arranged at detection points (a) and (b) is calculated from both detectors Da and Db, and this time difference DELTAt1 is marked in all corresponding meshes on a time difference map 1. Thus, one hyperbola is obtained. Further, this impact sound is detected by impact sound detectors De and Dd arranged at detection points (c) and (d) to calculate the detection time difference DELTAt2 between both detectors De and Dd, and this time difference DELTAt2 is marked in all corresponding meshes on a time difference map 2. Then, another hyperbola is obtained. The hyperbolas obtained on the time difference maps 1 and 2 are superposed to obtain their intersection, which is then spotted as the impact sound generation position.

3. 发明专利

JPS5594173A METHOD OF AND DEVICE FOR MEASURING SPATIAL DOSE AROUND ATOMIC FACILITY 失效
公开(公告)号：JPS5594173A
公开(公告)日：1980-07-17
申请号：JP61279
申请日：1979-01-10
申请人： NIPPON ATOMIC IND GROUP CO , TOKYO SHIBAURA ELECTRIC CO
发明人： KOYAMA KAZUHIKO , KITADA YOSHIO , TSUNODA TOMIO
IPC分类号： G01T1/16 , G01T1/167
摘要： PURPOSE:To exactly measure radioactive exhaust cloud removing the background due to natural radiation by providing an anemoscope-anemometer in the vicinity of the exhaust cylinder of an atomic facility and separating the measured sampling values of dosimeters disposed to the windward and leeward to identify. CONSTITUTION:The dose rate measured by a spatial dose rate detector 1 provided at a spatial dose measuring device around an atomic facility is applied to a sampling unit 2. The inputted sampling values of the respective detectors are applied to a wind direction detector 3, which thereupon detects whether the value is obtained from detectors disposed to the windward or leeward. The wind direction is judged by an anemoscope-anemometer 4 provided in the vicinity of the exhaust cylinder of the atomic facility. The natural radiation dose rate is estimated by a dosimeter 5 by the program in the wind direction detector, and applied to an exhaust cloud imparting dose estimating unit 9, which thereupon identifies and remove the background due to natural radiation to thereby exactly measure the radioactive exhaust cloud.

4. 发明专利

JPS5684578A SETTING METHOD FOR TIME OF ESTIMATION OF RADIOACTIVE CLOUD CONTRIBUTION DOSE 失效
公开(公告)号：JPS5684578A
公开(公告)日：1981-07-09
申请号：JP16076179
申请日：1979-12-13
申请人： NIPPON ATOMIC IND GROUP CO , TOKYO SHIBAURA ELECTRIC CO
发明人： KITADA YOSHIO , KOYAMA KAZUHIKO , ITOU TOSHIAKI
IPC分类号： G01T1/16 , G01T1/167
摘要： PURPOSE:To find precise dose of radioactive contribution by subtracting the dose rate of natural radioactive rays from the dose in fixed time zones located before and behind a time zone wherein the standard deviation value of the dose rate exceeds a fixed threshold value and by multiplying the same. CONSTITUTION:The time zones set by adding a time of 5-20min to the front and rear of the time zone wherein a time fluctuation rate expressed by the standard deviation value or gradient of the dose rate exceeds a fixed threshold value set beforehand is deemed to be influenced by the radioactive cloud contribution, and the estimation of the dose of the radioactive cloud contribution is made for these time zones.

5. 发明专利

JPS63279314A SUPPORT DEVICE FOR INPUT OF INFORMATION 失效
公开(公告)号：JPS63279314A
公开(公告)日：1988-11-16
申请号：JP11353887
申请日：1987-05-12
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SHIMIZU SHUNICHI , ANDO YASUMASA , KOYAMA KAZUHIKO , MORIOKA TOSHIHIKO
IPC分类号： G21D3/04 , G06F3/023 , H03M11/04
摘要： PURPOSE:To ensure the quick and proper input of information by using an input auxiliary device which performs input of information just by indicating and selecting the information out of those information displayed on an information input device from an assumed input information recorder based on a request or instruction of an operator received from an information input device. CONSTITUTION:The information whose input is assumed is sorted previously based on items, key words, etc., and recorded as a hierarchical relational data base in an assumed input information recorder 4. In addition to this recorder 4, an information input device 2 is provided together with an information recorder 5 an information processor 3, and an input auxiliary device 6 which performs the input of information just by indicating and selecting the information out of those information displayed on the device 2 from the recorder 4 via the processor 3 by the request/instruction 1 of an operator supplied from the device 2. In such a constitution, the complicated key input operations for characters and symbols carried out via a keyboard can be omitted together with the complicated comparing job between the input information and codes. Thus it is possible to prevent the information from being scattered by the similar synonyms by supplying selectively the assumed input information.

6. 发明专利

JPS63251812A MONITOR DEVICE FOR ABNORMALITY OF PLANT 失效
公开(公告)号：JPS63251812A
公开(公告)日：1988-10-19
申请号：JP8574787
申请日：1987-04-09
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SANO KENICHI , KOYAMA KAZUHIKO , NAKAI HIDETO
IPC分类号： G21C17/00 , G05B23/02 , G08B23/00 , G08B25/00
摘要： PURPOSE:To attain application of a monitor device to the balance monitor of plant signals even in such a case where the coefficient of a linear approximation formula is varied with the past influence of a monitor signal, by estimating the coefficient of the linear approximation formula from a mathematical model for the balance monitor of the plant signals. CONSTITUTION:The relation between two signals obtained from a plant is approximated by a linear formula for monitor of the balance between said signals. Thus, the plant abnormality is monitored. Then, a function is provided to show the change of the linear formula due to the influence of the past monitor signals. The balance diagnosis is carried out with use of a variable coefficient that is calculated from an identified mathematical model. Thus, it is possible to apply the balance monitor even with such a monitor signal with which the coefficient of a linear approximation formula has a big change due to the influence of the past monitor signals.

7. 发明专利

JPS63208716A DEVICE FOR SUPPORTING EQUIPMENT MAINTENANCE CONTROL 失效
公开(公告)号：JPS63208716A
公开(公告)日：1988-08-30
申请号：JP4130087
申请日：1987-02-26
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SHIMIZU SHUNICHI , KOYAMA KAZUHIKO , ANDO YASUMASA , MORIOKA TOSHIHIKO
IPC分类号： G01D21/00 , G01R31/00 , G21C17/00 , G21C17/003
摘要： PURPOSE:To easily support the intention determination of equipment maintaining operation by an input device which inputs information regarding equipment maintenance, etc., an arithmetic processor which diagnoses the state of the equipment maintenance with an operator's indication, and an output device. CONSTITUTION:Input information 1 such as equipment and component information and fault and maintenance history information and an operator's request or indication 2 are stored in a storage device 5 through the input device 3 and arithmetic processor 4. The arithmetic processor 4 retrieves and processes statistically the information stored in the storage device 5 and analyzes its reliability. Further, the rank of the state of equipment maintenance is set according to information regarding the reliability and life of equipment and components and information regarding the maintenance easiness and trouble influence degree of the equipment and components obtained by said functions. The information required for the equipment maintenance control which is obtained from this arithmetic processor 4 is displayed on an output device 6.

8. 发明专利

JPS6049237A MONITORING DEVICE FOR LEAK IN VALVE 失效
公开(公告)号：JPS6049237A
公开(公告)日：1985-03-18
申请号：JP15652583
申请日：1983-08-29
申请人： NIPPON ATOMIC IND GROUP CO
发明人： OGURA KENJI , KOYAMA KAZUHIKO , TSUNODA TOMIO
IPC分类号： G01M3/24
摘要： PURPOSE:To decide immediately on the leak in a valve such as a safety valve and a by-pass valve by providing an oscillation detector which detects the leak in the valve and an effective value converter having a band-pass filter for obtaining an oscillation signal from the oscillation detector in sequence. CONSTITUTION:The leak monitoring device is provided with the oscillation detector 1 which detects a steam leak, etc., and the effective value (RMS) converter 3 having the band-pass filter. If the safety valve provided in a piping system has a steam leak, a leak signal (a) due to the steam leak is detected by the oscillation detector 1. This leak signal (a) is amplified by an amplifier 2 and inputted to the RMS converter 3 with the band-pass filter. Consequently, the leak in the safety valve, by-pass valve, etc., is discriminated immediately.

9. 发明专利

JPS62208708A TRANSIENT CHANGE TRACKING TYPE DIGITAL FILTER 失效
公开(公告)号：JPS62208708A
公开(公告)日：1987-09-14
申请号：JP5048886
申请日：1986-03-10
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SANO KENICHI , KOYAMA KAZUHIKO , NAKAI HIDETO
IPC分类号： H03H21/00 , H03H17/00 , H03H17/02 , H03K5/01 , H03K5/1252 , H04B3/04
摘要： PURPOSE:To improve the tracking performance of an output signal with respect to an input signal by providing a transient change detection detecting a transient change from the difference between an input signal and an output signal of a digital filter and providing a filter processing section so as to give the smoothing performance at the steady-state of the input signal and so as to change sequentially the time constant of the digital filter. CONSTITUTION:An interface, A/D converter or a D/A converter is used for an input section 1 and an output section 4 depending whether an external signal is a digital signal or an analog signal. A transient change detection section 2 obtains the absolute value D of the difference between an input signal Xi to a filter processing section 3 from the input section 1 and an output signal Yi from the filter processing section 3 to the output section 4, and when the value D exceeds a reference value D0, it is discriminated as the occurrence of a transient change and a signal informing the detection of transient change is inputted to the filter processing section 3. As the reference value D0, a value being n-time of the standard deviation of the input signal Xi, for example, is used, where (n) is a value decided by which of the smoothing and the tracking performance to be emphasized. The filter processing section 3 changes sequentially the time constant K to improve the tracking performance when a signal of transient change detection comes from the transient change detection section 2.

10. 发明专利

JPS6472025A VAPOR LEAK MONITORING DEVICE 失效
公开(公告)号：JPS6472025A
公开(公告)日：1989-03-16
申请号：JP22858687
申请日：1987-09-14
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SANO KENICHI , KOYAMA KAZUHIKO , KOJIMA AKIRA
IPC分类号： G01M3/24
摘要： PURPOSE:To discriminate between vibration due to a vapor steam and other vibration by separating a detection signal from a vibration detector into plural frequency components and comparing the level ratio of the respective frequency components with a reference set value. CONSTITUTION:The detection signal of the vibration detector 1 is passed through a preamplifier 2 and a main amplifier 3, then passed through a frequency component separator consisting of plural BPFs 4, and converted 5 into effective values. They are A/D-converted 6 and then inputted to a microcomputer 7. The microcomputer 7 is stored with power levels of the respective frequency components at the time of a background noise or vapor leak and their total power level, and set values for detecting variation are provided above and below the total power level of the respective frequency components based on the total power level. Then it is decided whether or not the power of each smoothed frequency component exceeds the set values. When there is a frequency component exceeding the set values, a decision is made according to the fact that the background noise has many low frequency components and the vapor leak has many high frequency components; when leak occurrence is decided, a warning is displayed 8.

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