JP2010223602A - Air conditioning and ventilating system for central control room in nuclear power plant - Google Patents

Air conditioning and ventilating system for central control room in nuclear power plant Download PDF

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JP2010223602A
JP2010223602A JP2009068241A JP2009068241A JP2010223602A JP 2010223602 A JP2010223602 A JP 2010223602A JP 2009068241 A JP2009068241 A JP 2009068241A JP 2009068241 A JP2009068241 A JP 2009068241A JP 2010223602 A JP2010223602 A JP 2010223602A
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outside air
central control
valve
control room
air intake
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Hiroko Isobe
浩子 磯部
Makoto Naito
真 内藤
Toichi Murakami
統一 村上
Kenji Hosomi
憲治 細見
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Toshiba Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y02E30/30—Nuclear fission reactors

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Abstract

<P>PROBLEM TO BE SOLVED: To achieve reduction in operators' exposure in an emergency more than ever through the uptake of much outside air containing a lower concentration of radioactive materials. <P>SOLUTION: A system includes: an air supply duct 2 provided with an air blower 3 and a valve 4 for controlling the intake quantity of outside air; a recirculation duct 6 provided with a valve 7 for controlling a recirculation air flow rate; a radiation monitor 9 placed at an outside air intake 5 of the air supply duct 2, a radiation monitor 10 placed in a central control room 1; and a valve control device 8. The control device 8 makes the opening of the valve 4 smaller than usual and also makes the opening of the valve 7 larger than usual if the radiation dose at the outside air intake 5 is higher than that in the central control room 1 in comparison. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、原子力発電所における中央制御室に適用される換気空調設備、特に、中央制御室にいる運転員に対する事故時のリスクを低減した換気空調設備に関する。   The present invention relates to a ventilation air conditioning system that is applied to a central control room in a nuclear power plant, and more particularly to a ventilation air conditioning system that reduces a risk of an accident for an operator in the central control room.

原子力発電所において、原子炉、タービン、発電機等の運転、監視を行う中央制御室は、運転員が常駐して通常運転中はプラントにおける原子炉、タービン、発電機等の運転、監視を行い、事故時には事故を収束させるべく安全上の対策、運転操作を行うといったように非常に重要な場所である。したがって、事故時の中央制御室は周辺環境が厳しい状況にあっても、可能な限り運転員がとどまり種々の監視、操作ができる居住性が確保されなければならない。その確保のための手段の一つとして、中央制御室には換気空調設備が設けられており、制御室内の温度・湿度・酸素濃度を適切に保つと同時に、プラントの事故時には換気モードが通常換気モードから非常用換気モードへ切り替わり、周辺環境からの放射性物質の流入を制限するようになっている（特許文献１，２参照）。   At the nuclear power plant, the central control room that operates and monitors the reactors, turbines, generators, etc. operates and monitors the reactors, turbines, generators, etc. in the plant during regular operation. In the event of an accident, it is a very important place such as performing safety measures and driving operations in order to converge the accident. Therefore, in the central control room at the time of the accident, even if the surrounding environment is severe, it is necessary to ensure that the operator can stay as much as possible and to be able to perform various monitoring and operation. As one of the means to ensure this, the central control room is equipped with ventilation air-conditioning equipment, which keeps the temperature, humidity and oxygen concentration in the control room appropriately, and at the same time, the ventilation mode is set to normal ventilation in the event of a plant accident. The mode is switched from the emergency ventilation mode to restrict the inflow of radioactive substances from the surrounding environment (see Patent Documents 1 and 2).

上記換気空調設備において、非常用換気モードでは放射性物質の取込みを低減するために、外気取込風量を通常換気モードより小さくし、また、取り込んだ外気や室内循環空気が、事故時に放出される放射性物質のうち人体にとって放射線の影響寄与の大きなよう素を除去するために設けられたフィルタを通るような構成となっている。事故発生プラントからの事故信号又は運転員の操作によって非常用換気モードへ切り替えられた後は、外気取入はプラントにより連続少量取り入れか間欠取り入れとなる。連続少量取り入れの場合は外気取入口から一定の外気が取り入れられ、間欠取り入れの場合は二酸化炭素濃度の増加等の室内環境悪化を勘案して隔離と外気取入が繰り返される。   In the above ventilated air conditioning equipment, in order to reduce the intake of radioactive materials in the emergency ventilation mode, the intake air volume of the outside air is made smaller than that in the normal ventilation mode, and the taken-in outside air and indoor circulating air are released in the event of an accident. It is configured to pass through a filter provided to remove iodine, which has a large contribution to the influence of radiation on the human body. After switching to the emergency ventilation mode by an accident signal from the accident plant or the operator's operation, the intake of outside air is either a continuous small intake or intermittent intake depending on the plant. In the case of continuous small amount intake, a constant amount of outside air is taken in from the outside air intake, and in the case of intermittent intake, separation and outside air intake are repeated in consideration of deterioration of the indoor environment such as an increase in carbon dioxide concentration.

特開平９−１３３７８８号公報JP 9-133788 A 特開平９−１５９２０７号公報JP-A-9-159207

従来の中央制御室における運転員の事故時被曝の原因となっているものには、換気空調系を通らずに制御室へリークする放射性物質、非常用換気モードに切り替えるまでに通常換気風量で取り込まれる放射性物質、フィルタで除去できなかった放射性物質等がある。このような放射性物質の制御室への流入を減らすことで被曝の低減は可能となる。   What causes the accident exposure of operators in the conventional central control room is a radioactive material that leaks to the control room without passing through the ventilation air conditioning system, and is taken in with normal ventilation air volume before switching to the emergency ventilation mode Radioactive material that could not be removed by the filter. By reducing the inflow of such radioactive materials into the control room, exposure can be reduced.

放射性物質の制御室への流入を減らすことに関して、従来の換気空調設備は、非常用換気モードにおいて外気を取り込む際に放射性物質の濃度によらず１箇所から一定量取り込まれることから、放射性物質の取込量をより細かく制御するシステムとはなっていないことが課題であった。   With regard to reducing the inflow of radioactive materials into the control room, the conventional ventilation air-conditioning equipment takes in a certain amount from one place regardless of the concentration of radioactive material when taking in outside air in the emergency ventilation mode. The problem was that it was not a system to control the intake volume more precisely.

本発明の目的は、外気の放射性物質の濃度が小さいときは外気を多く取り込むことによって、従来以上に非常時の運転員の被曝低減を実現する原子力発電所の中央制御室用換気空調設備を提供することにある。   An object of the present invention is to provide a ventilation air conditioner for a central control room of a nuclear power plant that realizes a reduction in exposure of operators in an emergency more than before by taking in a lot of outside air when the concentration of radioactive substances in the outside air is small There is to do.

上記課題を解決するため、本発明は、送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、前記給気ダクトの外気取入口に設置された放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、前記バルブ制御装置は、前記外気取入口の放射線量を前記中央制御室内の放射線量と比較して大きい場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする。   In order to solve the above problems, the present invention provides an air supply duct in which a blower and an outside air intake adjustment valve are installed, a recirculation duct in which a recirculation air volume adjustment valve is installed, and an outside air inlet of the supply duct A ventilation air conditioning facility for a central control room of a nuclear power plant having a radiation monitor installed in the central control room, a radiation monitor installed in the central control room, and a valve control device, the valve control device comprising: When the radiation dose at the entrance is larger than the radiation dose in the central control room, the opening of the outside air intake adjustment valve is made smaller than usual, and the opening of the recirculation air flow regulation valve is made larger than usual. It is characterized by doing.

また、他の本発明は、送風機及び複数の分岐部に外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、前記複数の分岐部の各外気取入口に設置された複数の放射線モニタと、中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、前記バルブ制御装置は、前記複数の外気取入口のうち放射線量が最小以外の外気取入口について、対応する前記外気取入量調節バルブを閉め、放射線量が最小の外気取入口について、放射線量を前記中央制御室内の放射線量と比較して大きい場合は、対応する前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする。   In another aspect of the present invention, an air supply duct in which an outside air intake amount adjustment valve is installed in a blower and a plurality of branch portions, a recirculation duct in which a recirculation air amount adjustment valve is installed, and the plurality of branch portions A ventilation air conditioner for a central control room of a nuclear power plant having a plurality of radiation monitors installed in each outside air intake, a radiation monitor installed in a central control room, and a valve control device, wherein the valve control device Closes the corresponding outside air intake adjustment valve for the outside air intakes other than the smallest radiation dose among the plurality of outside air intakes, and sets the radiation dose for the outside air intakes with the smallest radiation dose in the central control room. When the amount of radiation is larger than the amount of radiation, the opening degree of the corresponding outside air intake adjustment valve is made smaller than usual, and the opening degree of the recirculation air amount regulation valve is made larger than usual. To.

また、他の本発明は、送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記風向計で計測された風向が前記排気筒の方位に一致した場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする。   In another aspect of the present invention, an air supply duct provided with a blower and an outside air intake adjustment valve, a recirculation duct provided with a recirculation air quantity adjustment valve, and a building roof with a central control room are installed. A ventilation air conditioner for a central control room of a nuclear power plant having an anemometer and a valve control device, wherein the valve control device stores in advance the direction of an exhaust pipe from which radioactive material is discharged in the event of an accident, and the wind direction When the wind direction measured by the meter coincides with the direction of the exhaust stack, the opening degree of the outside air intake adjustment valve is made smaller than usual and the opening degree of the recirculation air quantity regulation valve is made larger than usual. It is characterized by.

また、他の本発明は、送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、前記給気ダクトの外気取入口に設置された放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記風向計で計測された風向が前記排気筒の方位に一致するか、前記外気取入口の放射線量を前記中央制御室内の放射線量と比較して大きいか、少なくとも一方が成立した場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする。   In another aspect of the present invention, an air supply duct provided with a blower and an outside air intake adjustment valve, a recirculation duct provided with a recirculation air quantity adjustment valve, and a building roof with a central control room are installed. A ventilation air conditioner for a central control room of a nuclear power plant having an anemometer, a radiation monitor installed at an outside air inlet of the air supply duct, a radiation monitor installed in the central control room, and a valve control device; The valve control device stores in advance the direction of the exhaust stack from which radioactive materials are discharged in the event of an accident, and the wind direction measured by the anemometer matches the direction of the exhaust stack, or the outside air intake When the radiation dose is larger than the radiation dose in the central control chamber or at least one of them is established, the opening degree of the outside air intake adjustment valve is made smaller than usual, and the recirculation air flow adjustment valve Characterized by greater than normal opening.

また、他の本発明は、送風機及び複数の分岐部に外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、前記複数の分岐部の各外気取入口に設置された複数の放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記複数の外気取入口のうち放射線量が最小以外の外気取入口について、対応する前記外気取入量調節バルブを閉め、更に、放射線量が最小の外気取入口について、放射線量を前記中央制御室内の放射線量と比較して大きいか、前記風向計で計測された風向が前記排気筒の方位に一致するか、少なくとも一方が成立した場合は、対応する前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする。   Another aspect of the present invention is a building having a blower and an air supply duct provided with an outside air intake adjustment valve at a plurality of branch portions, a recirculation duct provided with a recirculation air quantity adjustment valve, and a central control room Nuclear power plant having an anemometer installed on the roof, a plurality of radiation monitors installed at each of the outside air intakes of the plurality of branch portions, a radiation monitor installed in the central control room, and a valve control device The central control room ventilation air conditioning system, wherein the valve control device stores in advance the direction of the exhaust pipe from which radioactive material is discharged in the event of an accident, and the outside air having a radiation dose other than the minimum among the plurality of outside air intakes. For the intake, close the corresponding outside air intake adjustment valve, and, for the outside air intake with the smallest radiation dose, measure whether the radiation dose is larger than the radiation dose in the central control room with the anemometer. The If the direction of the air flow coincides with the direction of the exhaust stack, or at least one of them is established, the opening degree of the corresponding outside air intake adjustment valve is made smaller than usual, and the opening degree of the recirculation air quantity adjustment valve is set to be smaller. It is characterized by being larger than usual.

本発明により、外気の放射性物質の濃度が小さいときは外気を多く取り込むことによって、従来以上に非常時の運転員の被曝低減を実現することができる。   According to the present invention, when the concentration of radioactive material in the outside air is small, the exposure of the operator in an emergency can be reduced more than before by taking in a lot of outside air.

実施形態１に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図。1 is a system diagram showing an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to Embodiment 1. FIG. 実施形態２に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図。The systematic diagram which shows the outline | summary of the ventilation air-conditioning equipment for central control rooms of the nuclear power plant which concerns on Embodiment 2. FIG. 実施形態３に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図。The system diagram which shows the outline | summary of the ventilation air-conditioning equipment for central control rooms of the nuclear power plant which concerns on Embodiment 3. FIG. 実施形態４に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図。The system diagram which shows the outline | summary of the ventilation air conditioning equipment for central control rooms of the nuclear power plant which concerns on Embodiment 4. FIG. 実施形態５に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図。FIG. 10 is a system diagram showing an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a fifth embodiment.

以下、本発明に係る実施形態について、図面を参照して説明する。なお、同一又は類似の構成には同一の符号を付し、重複する説明は省略する。   Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or similar structure, and the overlapping description is abbreviate | omitted.

（実施形態１）
図１は、実施形態１に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図である。
図１の中央制御室用換気空調設備において、中央制御室１へ空気を供給する給気ダクト２には、送風機３、外気取入量調節バルブ４、及び外気取入口５が設置される。再循環ダクト６には、再循環風量調節バルブ７が設置され、給気ダクト２に接続されている。 (Embodiment 1)
FIG. 1 is a system diagram illustrating an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a first embodiment.
In the ventilation air conditioning facility for the central control room in FIG. 1, the air supply duct 2 that supplies air to the central control room 1 is provided with a blower 3, an outside air intake adjustment valve 4, and an outside air inlet 5. A recirculation air volume control valve 7 is installed in the recirculation duct 6 and connected to the air supply duct 2.

外気取入口５には放射線モニタ９が設置され、中央制御室１内には放射線モニタ１０が設置されている。外気取入口５に設置された放射線モニタ９及び中央制御室１内に設置された放射線モニタ１０において放射性物質濃度を測定した放射線量の信号が、バルブ制御装置８に送られる。外気取入量調節バルブ４及び再循環風量調節バルブ７は、バルブ制御装置８により制御されるが、通常、一定の開度で運転されている。   A radiation monitor 9 is installed in the outside air intake 5, and a radiation monitor 10 is installed in the central control room 1. A radiation dose signal obtained by measuring the radioactive substance concentration in the radiation monitor 9 installed in the outside air inlet 5 and the radiation monitor 10 installed in the central control room 1 is sent to the valve controller 8. The outside air intake amount adjustment valve 4 and the recirculation air amount adjustment valve 7 are controlled by the valve control device 8, but are normally operated at a constant opening degree.

風量制御動作は次のように行われる。
バルブ制御装置８は、外気取入口５、中央制御室１内のそれぞれの位置における各放射線モニタ９，１０による放射線量の測定結果を比較し、外気取入口５の放射線モニタ９による放射線量が中央制御室１内の放射線モニタ１０による放射線量より大きい場合は、外気取入量調節バルブ４の開度を通常より小さくする（絞る）ことで外気の取り入れを小さくとともに、再循環風量調節バルブ７の開度を通常より大きくする。なお、外気取入量調節バルブ４及び再循環風量調節バルブ７の開度は、外気取入口５の放射線量又は中央制御室１内の放射線量に応じて段階的又は連続的に調節することができる。 The air volume control operation is performed as follows.
The valve control device 8 compares the measurement results of the radiation dose by the radiation monitors 9 and 10 at the respective positions in the outside air intake 5 and the central control room 1, and the radiation dose by the radiation monitor 9 in the outside air intake 5 is the center. When the amount of radiation is larger than the radiation amount by the radiation monitor 10 in the control room 1, the opening of the outside air intake adjustment valve 4 is made smaller (squeezed) to reduce the intake of outside air, and the recirculation air quantity adjustment valve 7 Increase the opening more than usual. The opening degree of the outside air intake adjustment valve 4 and the recirculation air volume adjustment valve 7 can be adjusted stepwise or continuously according to the radiation dose at the outside air intake 5 or the radiation dose in the central control chamber 1. it can.

これにより、外気の放射性物質濃度の方が中央制御室１内より大きい場合は、外気の取り入れを少なくし、小さい場合は、外気の取り入れを多くすることで中央制御室１内の放射性物質濃度をより小さくし、非常時の運転員の被曝を低減することができる。
なお、中央制御室１内に設置された放射線モニタ１０を省き、外気取入口の放射線量の比較対象を予め定めた放射線量の設定値としてもよい。 As a result, when the concentration of radioactive substance in the outside air is larger than that in the central control room 1, the intake of outside air is reduced, and when the concentration is small, the concentration of radioactive substance in the central control room 1 is increased by increasing the intake of outside air. It can be made smaller and the exposure of the operator in an emergency can be reduced.
The radiation monitor 10 installed in the central control room 1 may be omitted, and the radiation dose comparison target at the outside air intake may be set as a predetermined radiation dose setting value.

（実施形態２）
図２は、実施形態２に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図である。
本実施形態と実施形態１との構成上の相違は、給気ダクトに複数の分岐部があり、各分岐部にそれぞれ外気取入口と外気取入量調節バルブを設置した点である。 (Embodiment 2)
FIG. 2 is a system diagram illustrating an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a second embodiment.
The difference in configuration between the present embodiment and the first embodiment is that the air supply duct has a plurality of branch portions, and an outside air inlet and an outside air intake amount adjustment valve are installed in each branch portion.

図２の中央制御室用換気空調設備において、給気ダクトの２つの分岐部２１，２２が示され、それぞれに外気取入口５１，５２と外気取入量調節バルブ４１，４２が設置される。各外気取入口５１，５２には放射線モニタ９１，９２が設置され、中央制御室１内には放射線モニタ１０が設置されている。 In the central control room ventilation air conditioning system of FIG. 2, two branch portions 2 1 and 2 2 of the air supply duct are shown, and the outside air intake ports 5 1 and 5 2 and the outside air intake amount adjustment valves 4 1 and 4 are respectively shown. 2 is installed. Each outside air inlet 5 1, 5 2 radiation monitor 9 1 to 9 2 is installed, a radiation monitor 10 is installed in the central control room 1.

外気取入口５１，５２に設置された放射線モニタ９１，９２及び中央制御室１内に設置された放射線モニタ１０において放射性物質濃度を測定した放射線量の信号が、バルブ制御装置８に送られる。外気取入量調節バルブ４１，４２及び再循環風量調節バルブ７は、バルブ制御装置８により制御されるが、通常、一定の開度で運転されている。 Radiation of the signal obtained by measuring the radioactive substance concentration in the outside air inlet 5 1, 5 2 installed radiation monitor 9 1, 9 2 and radiation monitors 10 installed in the central control chamber 1, the valve control device 8 Sent. The outside air intake amount adjustment valves 4 1 and 4 2 and the recirculation air amount adjustment valve 7 are controlled by the valve control device 8, but are normally operated at a constant opening degree.

風量制御動作は次のように行われる。
バルブ制御装置８は、外気取入口５１，５２に設置された放射線モニタ９１，９２の測定結果から、放射線量の大きい方の外気取入口に対応する外気取入量調節バルブを閉める。 The air volume control operation is performed as follows.
Valve control device 8 and close the outside air inlet 5 1, 5 2 radiation monitor 9 1 installed in, 9 second measurements, the outside air intake amount adjusting valves corresponding to the greater external air inlet of the radiation dose .

続いて、放射線量の小さい方の外気取入口の放射線量を中央制御室１内の放射線量と比較し大きい場合は、対応する外気取入量調節バルブの開度を通常より小さくすることで外気の取り入れを小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。なお、外気取入量調節バルブ及び再循環風量調節バルブ７の開度は、外気取入口の放射線量又は中央制御室１内の放射線量に応じて段階的又は連続的に調節することができる。   Subsequently, when the radiation dose at the outside air intake with the smaller radiation dose is larger than the radiation dose in the central control chamber 1, the opening of the corresponding outside air intake adjustment valve is made smaller than usual to reduce the outside air. Is reduced, and the opening degree of the recirculation air volume adjusting valve 7 is increased from the normal level. The opening degree of the outside air intake adjustment valve and the recirculation air volume adjustment valve 7 can be adjusted stepwise or continuously according to the radiation dose at the outside air intake or the radiation dose in the central control chamber 1.

給気ダクトを３以上の複数設ける場合は、放射線量が最小以外の外気取入口に対応する外気取入量調節バルブを閉め、放射線量が最小の外気取入口について、その放射線量を中央制御室１内の放射線量と比較して、同様の制御を行う。   When multiple air supply ducts of 3 or more are provided, the outside air intake adjustment valve corresponding to the outside air intake with a radiation dose other than the minimum is closed, and the outside radiation intake with the smallest radiation dose is set in the central control room. The same control is performed as compared with the radiation dose in 1.

これにより、給気ダクトを複数設け、放射性物質濃度の低い外気取入口を選択して外気を取り入れ、加えて、外気の放射性物質濃度の方が中央制御室内より大きい場合は、外気の取り入れを少なくし、小さい場合は、外気の取り入れを多くすることで中央制御室１内の放射性物質濃度をより小さくし、非常時の運転員の被曝を低減することができる。
なお、中央制御室１内に設置された放射線モニタ１０を省き、外気取入口の放射線量の比較対象を予め定めた放射線量の設定値としてもよい。 In this way, multiple air supply ducts are provided, outside air intake is selected by selecting an outside air intake with a low concentration of radioactive material, and in addition, when the concentration of radioactive material in outside air is larger than that in the central control room, intake of outside air is reduced. However, in the case of being small, it is possible to reduce the radioactive substance concentration in the central control room 1 by increasing the intake of outside air, and to reduce the exposure of the operator in an emergency.
The radiation monitor 10 installed in the central control room 1 may be omitted, and the radiation dose comparison target at the outside air intake may be set as a predetermined radiation dose setting value.

（実施形態３）
図３は、実施形態３に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図である。
図３の中央制御室用換気空調設備において、中央制御室１へ空気を供給する給気ダクト２には、送風機３、外気取入量調節バルブ４、及び外気取入口５が設置される。再循環ダクト６には、再循環風量調節バルブ７が設置され、給気ダクト２に接続されている。 (Embodiment 3)
FIG. 3 is a system diagram illustrating an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a third embodiment.
In the ventilation air conditioning facility for the central control room in FIG. 3, the air supply duct 2 that supplies air to the central control room 1 is provided with a blower 3, an outside air intake adjustment valve 4, and an outside air inlet 5. A recirculation air volume control valve 7 is installed in the recirculation duct 6 and connected to the air supply duct 2.

中央制御室１のある建屋による気流の巻込みを避けるために中央制御室１のある建屋屋上に風向計１１が設置される。風向計１１の情報は、バルブ制御装置８へ送られる。外気取入量調節バルブ４及び再循環風量調節バルブ７は、バルブ制御装置８により制御されるが、通常、一定の開度で運転されている。   An anemometer 11 is installed on the building where the central control room 1 is located in order to avoid entrainment of airflow by the building where the central control room 1 is located. Information from the anemometer 11 is sent to the valve control device 8. The outside air intake amount adjustment valve 4 and the recirculation air amount adjustment valve 7 are controlled by the valve control device 8, but are normally operated at a constant opening degree.

風量制御動作は次のように行われる。
バルブ制御装置８には、事故時に放射性物質の排出される排気筒（不図示）の方位が予め記憶されている。 The air volume control operation is performed as follows.
The valve control device 8 stores in advance the orientation of an exhaust pipe (not shown) from which radioactive material is discharged in the event of an accident.

バルブ制御装置８は、風向計１１で計測した風向が排気筒の方位に一致した場合は、外気取入量調節バルブ４の開度を通常より小さくすることで外気の取り入れを小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   When the wind direction measured by the anemometer 11 coincides with the direction of the exhaust stack, the valve control device 8 reduces the intake of the outside air by reducing the opening of the outside air intake adjustment valve 4 from the normal, The opening degree of the circulating air volume adjusting valve 7 is set larger than usual.

これにより、排気筒から放出された放射性物質が中央制御室１の建屋まで到達することが予測された場合は、外気の取り入れを少なくし、到達しないと予測された場合は、外気を多く取り入れることで中央制御室１内の放射性物質濃度をより小さくし、非常時の運転員の被曝を低減することができる。   As a result, when it is predicted that the radioactive material released from the exhaust stack will reach the building of the central control room 1, the intake of outside air is reduced, and when it is predicted that the radioactive material will not reach, the intake of outside air is increased. Therefore, the radioactive substance concentration in the central control room 1 can be further reduced, and the exposure of the operator in an emergency can be reduced.

（実施形態４）
図４は、実施形態４に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図である。
本実施形態と実施形態３との構成上の相違は、外気取入口５に放射線モニタ９を設置し、中央制御室１内に放射線モニタ１０を設置した点である。 (Embodiment 4)
FIG. 4 is a system diagram illustrating an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a fourth embodiment.
The difference in configuration between the present embodiment and the third embodiment is that a radiation monitor 9 is installed in the outside air intake 5 and a radiation monitor 10 is installed in the central control room 1.

外気取入口５に設置された放射線モニタ９及び中央制御室１内に設置された放射線モニタ１０において放射性物質濃度を測定した放射線量の信号が、バルブ制御装置８に送られる。風向計１１の情報も、バルブ制御装置８へ送られる。外気取入量調節バルブ４及び再循環風量調節バルブ７は、バルブ制御装置８により制御されるが、通常、一定の開度で運転されている。   A radiation dose signal obtained by measuring the radioactive substance concentration in the radiation monitor 9 installed in the outside air inlet 5 and the radiation monitor 10 installed in the central control room 1 is sent to the valve controller 8. Information from the anemometer 11 is also sent to the valve control device 8. The outside air intake amount adjustment valve 4 and the recirculation air amount adjustment valve 7 are controlled by the valve control device 8, but are normally operated at a constant opening degree.

風量制御動作は次のように行われる。
バルブ制御装置８には、事故時に放射性物質の排出される排気筒の方位が予め記憶されている。 The air volume control operation is performed as follows.
The valve control device 8 stores in advance the direction of the exhaust stack from which radioactive material is discharged in the event of an accident.

バルブ制御装置８は、風向計１１で計測した風向が排気筒の方位に一致した場合は、外気取入量調節バルブ４の開度を通常より小さくすることで外気の取り入れを小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   When the wind direction measured by the anemometer 11 coincides with the direction of the exhaust stack, the valve control device 8 reduces the intake of the outside air by reducing the opening of the outside air intake adjustment valve 4 from the normal, The opening degree of the circulating air volume adjusting valve 7 is set larger than usual.

一致しない場合は、外気取入口５の放射線量を中央制御室１内の放射線量と比較して大きい場合に、外気取入量調節バルブ４の開度を通常より小さくすることで外気の取り入れを小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。なお、外気取入量調節バルブ４及び再循環風量調節バルブ７の開度は、外気取入口５の放射線量又は中央制御室１内の放射線量に応じて段階的又は連続的に調節することができる。   If they do not match, when the radiation dose at the outside air intake 5 is larger than the radiation dose in the central control room 1, the outside air intake adjustment valve 4 is made smaller than usual to take in outside air. While making it small, the opening degree of the recirculation air volume control valve 7 is made larger than usual. The opening degree of the outside air intake adjustment valve 4 and the recirculation air volume adjustment valve 7 can be adjusted stepwise or continuously according to the radiation dose at the outside air intake 5 or the radiation dose in the central control chamber 1. it can.

すなわち、バルブ制御装置８は、風向計１１で計測された風向が排気筒の方位に一致するか、外気取入口５の放射線量が中央制御室１内の放射線量より大きいか、少なくとも一方が成立した場合は、外気取入量調節バルブ４の開度を通常より小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   That is, the valve control device 8 determines whether the wind direction measured by the anemometer 11 coincides with the direction of the exhaust pipe, or the radiation dose at the outside air intake 5 is greater than the radiation dose in the central control chamber 1 or at least one of them is established. In this case, the opening degree of the outside air intake adjustment valve 4 is made smaller than usual, and the opening degree of the recirculation air volume regulation valve 7 is made larger than usual.

これにより、排気筒から放出された放射性物質が中央制御室１まで到達することが予測されるか、又は外気の放射性物質濃度が中央制御室１内の放射性物質濃度より大きい場合は、外気の取り入れを少なくし、いずれでもない場合は、外気の取り入れを多くすることで中央制御室１の放射性物質濃度をより小さくし、非常時の運転員の被曝を低減することができる。
なお、中央制御室１内に設置された放射線モニタ１０を省き、外気取入口の放射線量の比較対象を予め定めた放射線量の設定値としてもよい。 As a result, it is predicted that the radioactive material released from the exhaust stack will reach the central control room 1, or if the concentration of radioactive material in the outside air is larger than the concentration of radioactive material in the central control room 1, the intake of outside air In the case where it is not any of them, the concentration of radioactive material in the central control room 1 can be further reduced by increasing the intake of outside air, and the exposure of the operator in an emergency can be reduced.
The radiation monitor 10 installed in the central control room 1 may be omitted, and the radiation dose comparison target at the outside air intake may be set as a predetermined radiation dose setting value.

（実施形態５）
図５は、実施形態５に係る原子力発電所の中央制御室用換気空調設備の概要を示す系統図である。
本実施形態と実施形態２との構成上の相違は、中央制御室１のある建屋屋上に風向計１１を設置した点である。 (Embodiment 5)
FIG. 5 is a system diagram showing an overview of a ventilation air conditioning facility for a central control room of a nuclear power plant according to a fifth embodiment.
The difference in configuration between the present embodiment and the second embodiment is that an anemometer 11 is installed on the building roof where the central control room 1 is located.

外気取入口５１，５２に設置された放射線モニタ９１，９２及び中央制御室１内に設置された放射線モニタ１０において放射性物質濃度を測定した放射線量の信号が、バルブ制御装置８に送られる。風向計１１の情報も、バルブ制御装置８へ送られる。外気取入量調節バルブ４１，４２及び再循環風量調節バルブ７は、バルブ制御装置８により制御されるが、通常、一定の開度で設備が運転されている。 Radiation of the signal obtained by measuring the radioactive substance concentration in the outside air inlet 5 1, 5 2 installed radiation monitor 9 1, 9 2 and radiation monitors 10 installed in the central control chamber 1, the valve control device 8 Sent. Information from the anemometer 11 is also sent to the valve control device 8. The outside air intake adjustment valves 4 1 , 4 2 and the recirculation air volume adjustment valve 7 are controlled by the valve control device 8, but usually the equipment is operated at a constant opening degree.

風量制御動作は次のように行われる。
バルブ制御装置８には、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、風向計１１の情報が入力されている。 The air volume control operation is performed as follows.
The valve control device 8 stores in advance the direction of the exhaust stack from which radioactive material is discharged in the event of an accident, and information from the anemometer 11 is input.

バルブ制御装置８は、外気取入口５１，５２に設置された放射線モニタ９１，９２の測定結果を比較し、放射性物質濃度の大きい方の外気取入口に対応する外気取入量調節バルブ４１（又は４２）を閉める。 Valve controller 8 compares the outside air inlet 5 1, 5 2 radiation monitor 9 1 installed in, 9 2 measurements, the outside air intake amount adjustment corresponding to the outside air intake of the larger radioactive concentration Close valve 4 1 (or 4 2 ).

続いて、放射線量の小さい方の外気取入口の測定値が中央制御室１内の放射線量より大きい場合は、外気取入量調節バルブの開度を通常より小さくすることで外気の取り入れを小さくするするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   Subsequently, when the measured value of the outside air intake with the smaller radiation dose is larger than the radiation dose in the central control chamber 1, the outside air intake is reduced by making the opening of the outside air intake adjustment valve smaller than usual. At the same time, the opening degree of the recirculation air volume adjusting valve 7 is made larger than usual.

放射線量の小さい方の外気取入口の測定値を中央制御室１内の放射線量と比較して小さい場合は、排気筒から放出された放射性物質が中央制御室１の建屋に到達する風向が風向計１１で測定された場合に、外気取入量調節バルブの開度を通常より小さくすることで外気の取り入れを小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   When the measured value of the outside air intake with the smaller radiation dose is smaller than the radiation dose in the central control room 1, the wind direction in which the radioactive material released from the exhaust stack reaches the building of the central control room 1 is the wind direction. When measured by a total of 11, the opening of the outside air intake adjustment valve is made smaller than usual to reduce the intake of outside air, and the opening of the recirculation air volume adjustment valve 7 is made larger than usual.

なお、外気取入量調節バルブ４１，４２及び再循環風量調節バルブ７の開度は、外気取入口の放射線量又は中央制御室１内の放射線量に応じて段階的又は連続的に調節することができる。 In addition, the opening degree of the outside air intake adjustment valves 4 1 and 4 2 and the recirculation air volume adjustment valve 7 is adjusted stepwise or continuously according to the radiation dose at the outside air intake or the radiation dose in the central control room 1. can do.

すなわち、バルブ制御装置は、放射線量が小さい方の外気取入口について、放射線量が中央制御室１内の放射線量より大きいか、風向計１１で計測された風向が排気筒の方位に一致するか、少なくとも一方が成立した場合は、対応する外気取入量調節バルブの開度を通常より小さくするとともに、再循環風量調節バルブ７の開度を通常より大きくする。   That is, the valve control device determines whether the radiation dose is greater than the radiation dose in the central control chamber 1 for the outside air intake with the smaller radiation dose, or whether the wind direction measured by the anemometer 11 matches the direction of the exhaust stack. When at least one of them is established, the opening degree of the corresponding outside air intake amount adjusting valve is made smaller than usual, and the opening degree of the recirculation air amount regulating valve 7 is made larger than usual.

給気ダクトを３以上の複数設ける場合は、放射線量が最小以外の外気取入口に対応する外気取入量調節バルブを閉め、放射線量が最小の外気取入口について、その放射線量を中央制御室１内の放射線量と比較して、同様の制御を行う。   When multiple air supply ducts of 3 or more are provided, the outside air intake adjustment valve corresponding to the outside air intake with a radiation dose other than the minimum is closed, and the outside radiation intake with the smallest radiation dose is set in the central control room. The same control is performed as compared with the radiation dose in 1.

これにより、給気ダクトを複数設け、放射性物質濃度の低い外気取入口を選択して外気の取り入れをすることで中央制御室１の放射性物質濃度をより小さくする。加えて、外気の放射性物質濃度が中央制御室１内の放射性物質濃度より大きいか、又は排気筒から放出された放射性物質が中央制御室１まで到達することが予測される場合、外気の取り入れを少なくし、いずれでもない場合は、外気の取り入れを多くすることで中央制御室１の放射性物質濃度をより小さくし、非常時の運転員の被曝を低減することができる。
なお、中央制御室１内に設置された放射線モニタ１０を省き、外気取入口の放射線量の比較対象を予め定めた放射線量の設定値としてもよい。 As a result, a plurality of air supply ducts are provided, the outside air intake having a low radioactive material concentration is selected, and the outside air is taken in to reduce the concentration of the radioactive material in the central control chamber 1. In addition, if the concentration of radioactive material in the outside air is greater than the concentration of radioactive material in the central control chamber 1 or if it is predicted that the radioactive material released from the exhaust stack will reach the central control chamber 1, the intake of outside air should be taken. If it is less and none of them, the concentration of radioactive material in the central control room 1 can be reduced by increasing the intake of outside air, and the exposure of the operator in an emergency can be reduced.
The radiation monitor 10 installed in the central control room 1 may be omitted, and the radiation dose comparison target at the outside air intake may be set as a predetermined radiation dose setting value.

１…中央制御室、２，２１，２２…給気ダクト、３…送風機、４，４１，４２…外気取入量調節バルブ、５，５１，５２…外気取入口、６…再循環ダクト、７…再循環風量調節バルブ、８…バルブ制御装置、９，９１，９２，１０…放射線モニタ、１１…風向計。 DESCRIPTION OF SYMBOLS 1 ... Central control room, 2, 2 1 , 2 2 ... Air supply duct, 3 ... Blower, 4, 4 1 , 4 2 ... Outside air intake adjustment valve, 5, 5 1 , 5 2 ... Outside air intake, 6 ... recirculation duct, 7 ... recirculation air flow control valve, 8 ... valve controller, 9,9 1, 9 2, 10 ... radiation monitor, 11 ... wind vane.

Claims (6)

送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、前記給気ダクトの外気取入口に設置された放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、
前記バルブ制御装置は、前記外気取入口の放射線量を前記中央制御室内の放射線量と比較して大きい場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする原子力発電所の中央制御室用換気空調設備。 An air supply duct provided with a blower and an outside air intake adjustment valve, a recirculation duct provided with a recirculation air quantity adjustment valve, a radiation monitor installed at an outside air inlet of the air supply duct, and the central control A ventilation air conditioning system for a central control room of a nuclear power plant having a radiation monitor installed in a room and a valve control device,
When the radiation dose at the outside air intake is larger than the radiation dose in the central control chamber, the valve control device reduces the opening degree of the outside air intake amount adjustment valve to be smaller than normal and the recirculation air volume. A ventilation air conditioner for the central control room of a nuclear power plant, characterized in that the opening of the control valve is larger than usual. 送風機及び複数の分岐部に外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、前記複数の分岐部の各外気取入口に設置された複数の放射線モニタと、中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、
前記バルブ制御装置は、前記複数の外気取入口のうち放射線量が最小以外の外気取入口について、対応する前記外気取入量調節バルブを閉め、放射線量が最小の外気取入口について、放射線量を前記中央制御室内の放射線量と比較して大きい場合は、対応する前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする原子力発電所の中央制御室用換気空調設備。 An air supply duct in which an outside air intake amount adjustment valve is installed in the blower and a plurality of branch portions, a recirculation duct in which a recirculation air amount adjustment valve is installed, and an outside air intake port of each of the plurality of branch portions. A ventilation air conditioning facility for a central control room of a nuclear power plant having a plurality of radiation monitors, a radiation monitor installed in the central control room, and a valve control device,
The valve control device closes the corresponding outside air intake adjustment valve for the outside air intakes other than the minimum radiation dose among the plurality of outside air intakes, and sets the radiation dose for the outside air intakes with the smallest radiation dose. If it is larger than the radiation dose in the central control room, the opening degree of the corresponding outside air intake adjustment valve is made smaller than usual, and the opening degree of the recirculation air quantity regulation valve is made larger than usual. Ventilation air conditioning equipment for the central control room of the nuclear power plant. 送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、
前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記風向計で計測された風向が前記排気筒の方位に一致した場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする原子力発電所の中央制御室用換気空調設備。 An air supply duct provided with a blower and an outside air intake adjustment valve, a recirculation duct provided with a recirculation air flow adjustment valve, an anemometer installed on a building roof with a central control room, and a valve control device; Ventilation air conditioning equipment for a central control room of a nuclear power plant having
The valve control device stores in advance the direction of the exhaust stack from which radioactive material is discharged in the event of an accident, and when the wind direction measured by the anemometer matches the direction of the exhaust stack, the outside air intake amount adjustment valve A ventilation air conditioning system for a central control room of a nuclear power plant, characterized in that the opening degree of the recirculation air volume control valve is made smaller than usual and the opening degree of the recirculation air volume control valve is made larger than usual. 送風機及び外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、前記給気ダクトの外気取入口に設置された放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、
前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記風向計で計測された風向が前記排気筒の方位に一致するか、前記外気取入口の放射線量を前記中央制御室内の放射線量と比較して大きいか、少なくとも一方が成立した場合は、前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする原子力発電所の中央制御室用換気空調設備。 An air supply duct provided with a blower and an outside air intake adjustment valve, a recirculation duct provided with a recirculation air quantity adjustment valve, an anemometer installed on a building roof with a central control room, and the air supply duct A ventilation air conditioner for a central control room of a nuclear power plant having a radiation monitor installed at an outside air intake, a radiation monitor installed in the central control room, and a valve control device,
The valve control device stores in advance the direction of the exhaust stack from which radioactive material is discharged in the event of an accident, and determines whether the wind direction measured by the anemometer matches the direction of the exhaust stack or determines the radiation dose at the outside air intake. When the radiation amount in the central control room is larger or at least one of them is established, the opening degree of the outside air intake amount adjustment valve is made smaller than usual, and the opening amount of the recirculation air amount adjustment valve is made normal. Ventilation air-conditioning equipment for the central control room of a nuclear power plant characterized by being larger. 送風機及び複数の分岐部に外気取入量調節バルブが設置された給気ダクトと、再循環風量調節バルブが設置された再循環ダクトと、中央制御室のある建屋屋上に設置された風向計と、前記複数の分岐部の各外気取入口に設置された複数の放射線モニタと、前記中央制御室内に設置された放射線モニタと、バルブ制御装置とを有する原子力発電所の中央制御室用換気空調設備であって、
前記バルブ制御装置は、事故時に放射性物質の排出される排気筒の方位を予め記憶させ、前記複数の外気取入口のうち放射線量が最小以外の外気取入口について、対応する前記外気取入量調節バルブを閉め、更に、放射線量が最小の外気取入口について、放射線量を前記中央制御室内の放射線量と比較して大きいか、前記風向計で計測された風向が前記排気筒の方位に一致するか、少なくとも一方が成立した場合は、対応する前記外気取入量調節バルブの開度を通常より小さくするとともに、前記再循環風量調節バルブの開度を通常より大きくすることを特徴とする原子力発電所の中央制御室用換気空調設備。 An air supply duct having an outside air intake adjustment valve installed at the blower and a plurality of branch portions, a recirculation duct having an air circulation adjustment valve installed, and an anemometer installed on the building roof where the central control room is located A ventilation air conditioner for a central control room of a nuclear power plant having a plurality of radiation monitors installed at each outside air inlet of the plurality of branch portions, a radiation monitor installed in the central control room, and a valve control device Because
The valve control device stores in advance the direction of the exhaust pipe from which radioactive materials are discharged in the event of an accident, and the corresponding outside air intake amount adjustment is performed for the outside air inlets other than the minimum of the plurality of outside air inlets. Close the valve, and for the outside air intake with the smallest radiation dose, the radiation dose is larger than the radiation dose in the central control room, or the wind direction measured by the anemometer matches the direction of the exhaust stack Or when at least one of them is established, the opening degree of the corresponding outside air intake adjustment valve is made smaller than usual, and the opening degree of the recirculation air quantity regulation valve is made larger than usual. Ventilation air conditioning equipment for the central control room. 前記バルブ制御装置は、前記外気取入口の放射線量の比較対象を予め定めた放射線量の設定値とし、前記中央制御室内に放射線モニタを設置しないことを特徴とする請求項１、２、４又は５に記載の原子力発電所の中央制御室用換気空調設備。   The valve control device sets a radiation dose comparison target at the outside air intake as a predetermined radiation dose setting value, and does not install a radiation monitor in the central control chamber. 5. A ventilation air conditioning system for a central control room of a nuclear power plant according to 5.
JP2009068241A 2009-03-19 2009-03-19 Air conditioning and ventilating system for central control room in nuclear power plant Pending JP2010223602A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102820068A (en) * 2012-08-07 2012-12-12 中国核电工程有限公司 Emergency fresh air pipeline of ventilation system of main control room of nuclear power station
CN106918101A (en) * 2017-03-09 2017-07-04 中国核电工程有限公司 Nuclear power master control room ventilation and air conditioning system
CN113266594A (en) * 2021-04-12 2021-08-17 中国核电工程有限公司 Annular space ventilation system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102820068A (en) * 2012-08-07 2012-12-12 中国核电工程有限公司 Emergency fresh air pipeline of ventilation system of main control room of nuclear power station
CN106918101A (en) * 2017-03-09 2017-07-04 中国核电工程有限公司 Nuclear power master control room ventilation and air conditioning system
CN113266594A (en) * 2021-04-12 2021-08-17 中国核电工程有限公司 Annular space ventilation system and method

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