baber/WOPTO huggingface dataset:
Patent JP-2020518015-A (JP)
Title: 音響光学素子を駆動制御するための方法および信号発生器
IPC: G02F1/33
Filed: 2018-04-25
Abstract: 本発明は、駆動制御信号（１２０）を用いて音響光学素子（２００）を駆動制御するための方法に関しており、該駆動制御信号（１２０）は、少なくとも２つの周波数成分から構成される信号値シーケンスを用いたＤＤＳ法を用いて生成される。さらに本発明は、音響光学素子（２００）を駆動制御するための信号発生器（１００）ならびに顕微鏡に関する。
Patent JP-2020519793-A (JP)
Title: 家具ヒンジ
IPC: A47B55/00
Filed: 2018-05-04
Abstract: 第１の家具部分（３ａ）を第２の家具部分（３ｂ）に旋回可能に結合するための家具ヒンジ（６）であって、第１の家具部分（３ａ）に固定するための第１の金具部材（１１）と、第２の家具部分（３ｂ）に固定するための第２の金具部材（１２）であって、少なくとも１つのジョイント軸（１３）を介して第１の金具部材（１１）に旋回可能に結合された第２の金具部材（１２）とを有しており、第１の金具部材（１１）が、第１の家具部分（３ａ）に固定することができるベースプレート（１１ａ）と、ジョイント軸（１３）を中心として旋回可能に支持された連結片（１４）とを有しており、この連結片（１４）が、第２の金具部材（１２）に解除可能に結合可能であり、この第２の金具部材（１２）が、連結片（１４）をガイドするための少なくとも１つのガイド装置（２１ａ）を有しており、このガイド装置（２１ａ）への押し込みまたは押し付けが行われた後、連結片（１４）が、第２のロック装置（１９）によって第２の金具部材（１２）に解除可能に結合可能であり、連結片（１４）を予め規定された旋回位置においてベースプレート（１１ａ）に対して相対的に解除可能にロックすることができる第１のロック装置（１５）が設けられており、連結片（１４）の予め規定された旋回位置をベースプレート（１１ａ）に対して相対的に解除するために、連結片（１４）を第２の金具部材（１２）に結合することによって、第１のロック装置（１５）がロック解除可能である、家具ヒンジ（６）。
Patent JP-2020520910-A (JP)
Title: 固形腫瘍の治療において使用するための、ナフチリジン誘導体及びアルミニウムアジュバントを含む組成物
IPC: A61K47/18
Filed: 2018-05-17
Abstract: 本明細書で提供される本発明は、式（Ａ）【化１】の構造を有するＴＬＲ７アゴニスト、アルミニウム含有粒子及び１つ以上の薬学的に許容される賦形剤を含む医薬組成物を含む。本発明は、単独又は１つ以上の追加の医薬組成物との組合せのいずれかでの、固形腫瘍の治療におけるそのような組成物の使用をさらに提供する。
Patent JP-2020506849-A (JP)
Title: 軌道車両の頭部モジュール
IPC: B61D15/06
Filed: 2018-02-02
Abstract: 本発明は、軌道車両の頭部モジュールに関する。前記頭部モジュールは、付加的な台枠がない場合に、取り外し不能に、後続の車両部材の端面に適切に固定される。前記頭部モジュールは内部ハウジングと外部ハウジング（７０１、７０２）からなるとともに、三つのシステムを備え、これらのシステムが大体、互いに独立的に、衝突した場合に順にまたは同時に衝突エネルギーを変形に変換する。
Patent JP-2020521329-A (JP)
Title: 半導体デバイス及びその製造方法
IPC: H01L29/41
Filed: 2018-10-16
Abstract: 半導体基板と、半導体基板の一方側に製造されたソースと、ゲートとドレインと、ソースの位置する領域においておいたスルーホール領域及びスルーホール領域に製造されたエッチング阻止層と、エッチング阻止層の下方に位置するとともに半導体基板を貫通したスルーホールとを含んでいる半導体デバイスを提供している。
Patent JP-2020509976-A (JP)
Title: 補助熱発生器を有する空気空胴パッケージ
IPC: H01L23/42
Filed: 2018-02-23
Abstract: 空気空胴パッケージは、熱および空気空胴パッケージ内に大気圧より高い圧力を発生させるための補助熱発生器を有する。補助熱発生器は、一定の温度または可変温度に維持され得る。補助熱発生器は、ユーザによって、またはプロセッサによって、所定のパラメータに基づいて選択的に起動され得る。補助熱発生器は、熱を発生させることができるＲＦおよび／または他のチップであっても、あるいは導電線であってもよい。【選択図】図１
Patent JP-2020522760-A (JP)
Title: オーバーコートされたフォトレジストと共に使用するためのコーティング組成物
IPC: G03F7/11
Filed: 2018-08-09
Abstract: オーバーコートされたフォトレジストと共に使用するための、１）１種以上の樹脂と、２）１）１種以上の樹脂と異なる１種以上のＰＤＱ化合物とを含む有機コーティング組成物、特に反射防止コーティング組成物が提供される。【代表図】図１
Patent JP-2020523113-A (JP)
Title: 患者の脳血液量及び／又は脳血流量、及び／又は麻酔深度を推定するシステム及び方法
IPC: A61B5/374
Filed: 2018-05-29
Abstract: 患者の脳血液量及び／又は脳血流量及び／又は麻酔深度を推定するシステム１は、患者２の頭部２０に配置されて励起信号を印加する少なくとも１つの励起電極１１０Ｅと、患者２の頭部２０に配置されて、励起信号によってもたらされた測定信号を検知する少なくとも１つの検知電極１１０Ｓと、少なくとも１つの検知電極１１０Ｓによって検知された上記測定信号ＶＣを処理して、脳血液量及び／又は脳血流量を示す出力を求めるプロセッサデバイス１２とを備える。ここで、プロセッサデバイス１２は、非線形雑音低減アルゴリズムを適用することによって、測定信号ＶＣ内の雑音を低減するように構成される。このようにして、精度の向上をもたらすことができ、したがって、より正確な推定値を与えることができる、患者の脳血液量及び／又は脳血流量を推定するシステムが提供される。【選択図】図１
Patent JP-2020530553-A (JP)
Title: ラテラルフローを使用する試料分析の方法及び装置
IPC: G01N33/543
Filed: 2018-07-03
Abstract: ラテラルフローテストを実行するための方法及びアッセイが開示される。試料が少なくとも第１のテストゾーン及び第２のテストゾーンへ流れるように、試料がラテラルフローデバイスの受取部に付着される。アッセイ期間にわたり第１及び第２のテストゾーンでの第１及び第２の信号レベルが監視される。試料中に目的の第１の分析物が存在する場合、第１の分析物は標識され、試料中に標識された第１の分析物が存在することにより、アッセイ期間中に第１及び第２の信号レベルのうちの一方が増加する。アッセイ期間中の一定期間にわたり第１の信号レベルと第２の信号レベルとの間の変化が監視される。試料は受取部に付着される前にインキュベートされ、均質な標識化が提供され、よって、テストゾーンのうちの一方では、信号レベルは実質的に線形に増加し、テストゾーンのうちのもう一方では、信号レベルは実質的に一定であり得る。【選択図】図５ｂ
Patent JP-2020525294-A (JP)
Title: 平面プレート、加圧ツール及び平面プレートの使用方法
IPC: B30B11/02
Filed: 2018-06-29
Abstract: 本発明はプレス機３の加圧ツール２用の平面プレート１に関し、少なくとも１つのリフティングシリンダー４を介してプレス機３のパンチ６を作動させる平面プレート１が軸方向５に移動可能であり、平面プレート１が少なくとも１つのリフティングシリンダー４へのリンク３４と、プレス機３のパンチ６又はパンチホルダーに接触するため中央に配置された収容部９と、ガイドカラム８、３７に接触するために軸方向５に平行である少なくとも１つの少なくとも部分的に円筒状のガイド面７、３１とを有し、平面プレート１が収容部９とガイド面７、３１との間で軸方向５に平行に延びており、かつ軸方向５に垂直となるように延びる半径方向１１に沿って延びている少なくとも第１断面１０に、壁厚１３及び第１中央ライン２１を有する第１領域１２を有し、第１中央ライン２１が半径方向１１に対して最小１０度で最大８０度の第１角度２２で少なくとも部分的に延びている。【選択図】図４
Patent JP-2020525372-A (JP)
Title: 搬送ロボット及び搬送ロボットによる品物取り方法
IPC: B66F9/24
Filed: 2018-09-07
Abstract: 【課題】本出願は、インテリジェント倉庫保管技術の分野に関し、搬送ロボットによる品物取り方法を開示するものである。【解決手段】搬送ロボットは、収納棚と、収納棚に取り付けられ、伸縮ブーム及び前記伸縮ブームに取り付けられたマニピュレーターを含む搬送装置とを備え、品物取り方法は、伸縮ブームが、マニピュレーターを、水平に設置された基準線に沿って固定棚の所定の位置へ伸ばすように駆動することと、マニピュレーターが、基準線に留まって所定の位置にある品物を積載することと、伸縮ブームが、品物を積載しているマニピュレーターを、基準線に沿って収納棚に移動させるように駆動することと、マニピュレーターが基準線に留まって品物を収納棚に卸すことと、を含む。【選択図】図１１
Patent JP-2021110393-A (JP)
Title: On-vehicle control device
Inventor: SEO TAKASHI
IPC: F16D25/12
Filed: 2020-01-10
Abstract: To provide an on-vehicle control device which can calculate a degree of damage even in a state that the damage of a component of a synchromesh mechanism is small.SOLUTION: An on-vehicle control device performs: collision degree calculation processing (S110) for calculating a collision degree indicating a magnitude of a collision of a sleeve chamfer and a gear chamfer on the basis of a rotational speed difference between a sleeve and an idle gear when it is determined that gear noise is generated; index value calculation processing (S130) for calculating an index value correlated with the damage of the sleeve chamfer and the gear chamfer on the basis of the collision degree which is calculated everytime the occurrence of the gear noise is determined; and damage degree calculation processing (S140) for calculating a damage degree of the sleeve chamfer and the gear chamfer by integrating index values which are calculated everytime the occurrence of the gear noise is determined.SELECTED DRAWING: Figure 3
Patent JP-2021113560-A (JP)
Title: High-pressure tank
Inventor: MIYOSHI SHINJI
IPC: F17C1/06
Filed: 2020-01-16
Abstract: To provide a high-pressure tank which can reduce a friction force generated between a flange part of a mouthpiece and a reinforcing layer, even if fixed to a vehicle body via the mouthpiece.SOLUTION: A high-pressure tank 10 has a liner 11, a mouthpiece 12 attached to the liner 11, a reinforcing layer 14 for coating the liner 11, and a valve 16 arranged at the mouthpiece 12, and the high-pressure tank is fixed to a vehicle body 30 via the mouthpiece 12. The mouthpiece 12 has a flange part 12b covered with the reinforcing layer 14 together with the liner 11, and a neck part 12a formed integrally with the flange part 12b and protruding from the reinforcing layer 14. Further, the neck part 12a of the mouthpiece 12 and the reinforcing layer 14 adhere to each other to form a clearance between the flange part 12b of the mouthpiece 12 and the reinforcing layer 14 or a friction reduction layer 15 between the flange part 12b and the reinforcing layer 14.SELECTED DRAWING: Figure 2
Patent JP-2021117325-A (JP)
Title: Image forming apparatus
Inventor: MIYAZAWA TORU
IPC: G03G15/16
Filed: 2020-01-24
Abstract: To prevent the occurrence of color shift due to erroneous correction in belt position control caused by a change over time in the shape of the edges of an intermediate transfer belt.SOLUTION: An image forming apparatus has: an endless belt (6); a plurality of belt tension rollers (20, 21, 22, 23, 9) that stretches the belt; driving means (24) that drives to convey the belt; image forming means (1Y, 1M, 1C, 1K) that are provided opposite to the belt; the steering roller (21) that is the belt tension roller and changes a disposition angle with respect to the belt to correct the position in a width direction of the belt; and control operation means (150) that has a sensor (25) for detecting a position orthogonal to a conveyance direction of the belt, and calculates the disposition angle of the steering roller based on a detection value from the sensor. The control operation means calculates the disposition angle of the steering roller based on a value processed by a notch filter (58) that removes a frequency component for one revolution of the belt from the detection value from the sensor.SELECTED DRAWING: Figure 6
Patent JP-2021115517-A (JP)
Title: Ash granulated solidified body, and manufacturing method thereof
Inventor: TAKADA HIDEKI
IPC: C09K17/42
Filed: 2020-01-24
Abstract: To provide an ash granulated solidified body usable for a soft soil modification material, capable of utilizing effectively paper sludge incineration ash in which elution of harmful components is suppressed.SOLUTION: In an ash granulated solidified body comprising a kneaded product of water, and at least one kind selected from paper sludge incineration ash, coal ash, ferrous sulfate as a reducer, and ferric polysulfate and aluminum sulfate as a coagulant, an average pore radius is 0.1 μm or less, and a cumulative pore volume is 0.2 ml/g or more and less than 0.4 ml/g, and a pH value is 8.5 or higher and 10 or lower by addition of a metal salt formed from strong acid and weak base after kneading and before curing.SELECTED DRAWING: None
Patent JP-2021117729-A (JP)
Title: Notification device and program
Inventor: KOBAYASHI KAZUHIDE
IPC: G06Q10/10
Filed: 2020-01-27
Abstract: To introduce a person having knowledge about an operation to a user who does not know the operation to be performed.SOLUTION: A detection unit 111 detects an operation received by a terminal 2 from a user. A storage control unit 112 stores the operation detected by the detection unit 111 in an operation history DB 123 of a memory 12. A selection unit 114, when operations detected by the detection unit 111 include a first operation that does not satisfy determined conditions, identifies a user who performed the first operation, as a first user. Then, the selection unit 114 selects a second user who is a person having knowledge to be introduced for the identified first user on the basis of the content of the operation stored in the operation history DB 123. A notification unit 116 notifies the first user of information on the second user selected by the selection unit 114.SELECTED DRAWING: Figure 8
Patent JP-2021118486-A (JP)
Title: Image processing device
Inventor: KIMURA MASAHIKO
IPC: H04N5/262
Filed: 2020-01-28
Abstract: To provide an image processing device suitable for image editing on a mobile terminal device in various use cases.SOLUTION: The image processing device having communication means for communicating with an external processing device and for editing image data includes publishing means for setting publication for individual image data or a group of image data and setting means for setting the synchronization of editing for each editing item of an image in the publication means. An editing result is reflected according to the setting of the setting means for the editing content edited by the external processing device to the published image data.SELECTED DRAWING: Figure 6
Patent JP-2021117908-A (JP)
Title: Data-for-map-generation collection device, data-for-map-generation collection method, and vehicle
Inventor: NEYAMA AKIRA
IPC: G09B29/00
Filed: 2020-01-29
Abstract: To provide a data-for-map-generation collection device that can suppress a storage amount of data for map generation and mitigate a communication load by transmission of the data for map generation.SOLUTION: A data-for-map-generation collection device includes: a determination unit 21 that determines whether or not the current status of a vehicle 3 is suitable for collecting data to be collected based on aptitude determination data that represents aptitude for collecting the data to be collected used to generate or update a map for the environment of the vehicle 3 or around the vehicle 3 received from the vehicle 3 via a communication unit 11; and an instruction unit 22 that instructs the vehicle 3 to collect the data to be collected via the communication unit 11 when the current status of the vehicle 3 is determined to be suitable for collecting the data to be collected.SELECTED DRAWING: Figure 4
Patent JP-2020078246-A (JP)
Title: Noise suppression structure of current collection device and current collection system
Inventor: MITSUMOJI TAKESHI
IPC: B61D49/00
Filed: 2020-01-31
Abstract: To provide a noise suppression structure of a current collection device and a current collection system capable of suppressing, by a simple structure, noise radiated from a circumference of a joint part between a current collecting shoe and a shoe supporting part to a wayside.SOLUTION: A noise suppression structure suppresses noise radiated from current collection devices 7A and 7B to waysides Wand W. The current collection devices 7A and 7B are elevated according to a travelling direction of a vehicle 5, and includes a shoe supporting part 9a for supporting a position close to an end of one of a current collecting shoe 8 of the current collection devices 7A and 7B. When a joint part between the current collecting shoe 8 and the shoe supporting part 9a is located at a side far from waysides Wand W, the current collection devices 7A and 7B are switched to an elevating state. When the joint part between the current collecting shoe 8 and the shoe supporting part 9a is located at a side near from the waysides Wand W, the current collection devices 7A and 7B are switched to a lowering state. The noise suppression structure includes a sound insulation plate 13 for blocking the noise radiated from the current collection devices 7A and 7B to the waysides Wand W.SELECTED DRAWING: Figure 1
Patent JP-2021122634-A (JP)
Title: Game machine
Inventor: OGURA TOSHIO
IPC: A63F7/02
Filed: 2020-02-07
Abstract: To provide a game machine which achieves enriched attractiveness.SOLUTION: A game machine includes special state control means capable of controlling a game state to a special state in which variable display is easily executed, termination determination means for determining the termination of a specific state in the specific state easily controlled to an advantageous state by lottery, and notification performance execution means capable of executing a notification performance that can notify a player whether the specific state is terminated or a specific display result is derived and displayed, related to the control of the specific state. The special state control means can control the game state to the special state when a special condition is satisfied, and control the game state to the special state after the termination determination means determines that the specific state is terminated after the special condition is satisfied, when the special condition is satisfied in the specific state that is easily controlled to the advantageous state. The notification performance execution means can notify the player that the game state is controlled to the special state by the notification performance, when the special condition is satisfied in the specific state.SELECTED DRAWING: Figure 10-9
Patent JP-2021124466-A (JP)
Title: Running wheel and timepiece
Inventor: HIROTA YUSUKE
IPC: G04B19/253
Filed: 2020-02-07
Abstract: To prevent a display wheel from being broken even when the display wheel is difficult to move in a running wheel for rotating the display wheel.SOLUTION: A running wheel 20 includes: a flexible elastic piece unit 27 in which a pressing tooth 24 for pressing a tooth of a date indicator in a rotation direction R is formed at an outer section farthest from a center of rotation, and an engaged unit 28 is formed at an inner section nearer from a center than the pressing tooth 24; and an engaging unit 29 that is formed apart from the engaged unit 28 and engaged with the engaged unit 28 by deflection of the elastic piece unit 27. In a case where the date indicator does no rotate even when the pressing tooth 24 presses the tooth of the date indicator by rotation of the running wheel 20, the elastic piece unit 27 bends according to rotation of the running wheel 20. The engaging portion 29 engages with the engaged unit 28 of the bent elastic piece unit 27 to cause the elastic piece unit 27 to bend radially inward according to rotation of the running wheel 20, thereby separating the pressing tooth 24 from the tooth of the date indicator.SELECTED DRAWING: Figure 4
Patent JP-2021126614-A (JP)
Title: Substrate processing apparatus
Inventor: MORI HIROYOSHI
IPC: B02C18/16
Filed: 2020-02-13
Abstract: To provide a substrate processing apparatus which can separate a component from both surfaces of a substrate by one-time operation without heating processing and chemical processing.SOLUTION: A substrate processing apparatus separates electronic components from both surfaces of a substrate with the electronic components mounted on an upper surface and lower surface, and includes a lower surface processing part which separates the electronic component from the lower surface of the substrate, and an upper surface processing part which separates the electronic component from the upper surface of the substrate. One of the lower surface processing part and the upper surface processing part is positioned on an upstream side of a conveyance direction of the substrate, and the other is positioned on a downstream side. The lower surface processing part includes a conveying part for lower surface processing which conveys the substrate from the upstream side to the downstream side, and a rotary blade for a lower surface which separates the electronic component from the lower surface of the substrate. The upper surface processing part includes a conveying part for upper surface processing which conveys the substrate from the upstream side to the downstream side, and a rotary blade for an upper surface which separates the electronic component from the upper surface of the substrate.SELECTED DRAWING: Figure 1
Patent JP-2021131054-A (JP)
Title: Fuel property detection device
Inventor: NAGASHIMA YOSHIBUMI
IPC: F02M21/02
Filed: 2020-02-19
Abstract: To suitably detect fuel properties.SOLUTION: A fuel property detection device CD for detecting properties of fuel of an internal combustion engine, which is natural gas supplied from an LNG tank 50, includes: a CNG tank 70 storing natural gas as CNG; a fuel passage 81 connected to the LNG tank and the CNG tank in a switchable manner; a sensor 88 provided in the fuel passage and configured to detect a flow rate of natural gas; and an estimation unit 100 configured to estimate heaviness of the fuel on the basis of a first output value obtained by the sensor when the natural gas at a predetermined flow rate from the CNG tank is flowing in the fuel passage and a second output value obtained by the sensor when the natural gas at the predetermined flow rate from the LNG tank is flowing in the fuel passage.SELECTED DRAWING: Figure 3
Patent JP-2021134018-A (JP)
Title: Passenger conveyor diagnostic device fixing jig
Inventor: SANNOMIYA KOTARO
IPC: B66B31/00
Filed: 2020-02-25
Abstract: To provide a passenger conveyor diagnostic device fixing jig that is able to accurately and easily diagnose vibration of a step.SOLUTION: A passenger conveyor diagnostic device fixing jig for fixing a diagnostic device of a passenger conveyor, which holds a portable terminal in a predetermined position relative to a plurality of cleats formed so as to be lined up in a width direction of an upper surface of a tread of the passenger conveyor, comprises: a seat portion supporting a lower surface of the portable terminal; a terminal grip portion provided on an upper surface of the seat portion and gripping a side end of the portable terminal; and a cleat grip portion providing on both sides of a lower side of the seat portion in a width direction and gripping the cleats; wherein the cleat grip portion is inserted between the cleats in an elastically deformed state, and a side surface of the cleat grip portion presses the side surfaces of the cleats with a restoring force.SELECTED DRAWING: Figure 5
Patent JP-2021133752-A (JP)
Title: aircraft
Inventor: TSUBATA HIROYUKI
IPC: G01W1/00
Filed: 2020-02-26
Abstract: To reduce influence of lightning by keeping an airframe attitude that is less likely to receive lightning.SOLUTION: An aircraft 1 of the invention includes: a cloud position acquisition part that acquires a position of a cloud CL; an electric field direction estimation part that estimates an electric field direction when passing through the vicinity of the cloud on the basis of the acquired position of the cloud and a flight path 80; an attitude derivation part that derives a target airframe attitude to reduce the possibility of lightning on the basis of the estimated electric field direction; a path derivation part that newly derives flight paths 81, 82 and 83 so as keep the derived target airframe attitude in the cloud; and an attitude control part that controls an attitude of the aircraft so as to be the derived target airframe attitude when passing through the vicinity of the cloud.SELECTED DRAWING: Figure 14
Patent JP-2021136537-A (JP)
Title: Imaging apparatus, computer program and storage medium
Inventor: KASUYA FUZUKI
IPC: G03B17/18
Filed: 2020-02-26
Abstract: To provide an imaging apparatus which prevents an imaging range set once with respect to a prescribed imaging unit from being erroneously operated when the operation is performed to another imaging unit.SOLUTION: An imaging apparatus comprises: a first imaging unit and a second imaging unit each of which includes at least one driving unit for changing an imaging range; a reception unit which receives from an external device an invalidation instruction for invalidating the operation of at least one driving unit of at least one of the first imaging unit and the second imaging unit and a release instruction for releasing the invalidation by the invalidation instruction; and a control unit which controls the driving unit not to perform the driving even when the driving is instructed by the external device until the invalidation is released by the release instruction for the driving unit that is invalidated by the invalidation instruction.SELECTED DRAWING: Figure 6
Patent JP-2021139429-A (JP)
Title: Moving device
Inventor: TAKEMURA YOSHIYA
IPC: F16H37/02
Filed: 2020-03-04
Abstract: To provide a moving device which can properly adjust a reaction force which is received by an operation part of a drive wheel or the like from an operation face from a view point of an improvement of the control accuracy of a translation form of a base body.SOLUTION: A moving device has a component (-z direction component) in which stress F1 received by a first base body 11 from a second power transmission mechanism 220 progresses toward a floor face G in a "first translation state" that stress F0 received by a front wheel 21 from the floor face G becomes large with respect to a first translation direction (+x direction) according to an operation of a force generation mechanism 110, and "a first stress action state" that a first designation plane P1 is located at the same side as that of the front wheel 21 with a designation axial line Q as a reference is obtained. The first designation plane P1 includes an action point C1 of the stress F1 which is received by the first base body 11 from the second power transmission mechanism 220, and is a plane which is parallel to an action direction of the stress F1 and the designation axial line Q (±y direction).SELECTED DRAWING: Figure 1
Patent JP-2020148769-A (JP)
Title: Detection method and detection device of loss of seal in canister, canister, and concrete storage container
Inventor: TAKEDA HIROFUMI
IPC: G21F5/12
Filed: 2020-03-05
Abstract: To properly detect in-leak of inert gas in a concrete cask/concrete silo canister, without the release of radioactive material.SOLUTION: In the detection method of loss of a sealed structure of a canister 4 stored vertically in a concrete cask 2, the canister 4 is sealed with spent fuel and an inert gas with a higher thermal conductivity than the outside air, and, the internal pressure is controlled to negative. When at least one of the bottom temperature TB, lid temperature TT, and sidewall temperature TS of the canister 4 changes beyond a predetermined threshold, it is determined that the sealed structure of the canister 4 has been damaged.SELECTED DRAWING: Figure 1