JPH0795107B2 - Power Control Method for Heavy Water Moderated Light Water Cooled Pressure Tube Reactor - Google Patents
Power Control Method for Heavy Water Moderated Light Water Cooled Pressure Tube ReactorInfo
- Publication number
- JPH0795107B2 JPH0795107B2 JP1108948A JP10894889A JPH0795107B2 JP H0795107 B2 JPH0795107 B2 JP H0795107B2 JP 1108948 A JP1108948 A JP 1108948A JP 10894889 A JP10894889 A JP 10894889A JP H0795107 B2 JPH0795107 B2 JP H0795107B2
- Authority
- JP
- Japan
- Prior art keywords
- heavy water
- poison
- control method
- pressure tube
- heavy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 title claims description 134
- 238000000034 method Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 10
- 239000002574 poison Substances 0.000 claims description 43
- 231100000614 poison Toxicity 0.000 claims description 43
- 238000001816 cooling Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 8
- 239000010419 fine particle Substances 0.000 description 13
- 238000000746 purification Methods 0.000 description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 6
- 229910052805 deuterium Inorganic materials 0.000 description 6
- -1 deuterium peroxide Chemical class 0.000 description 6
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
この発明は、重水減速材中のポイズンの濃度を制御する
ことにより重水減速軽水冷却圧力管型原子炉の出力を制
御する方法に関するものである。The present invention relates to a method for controlling the output of a heavy water moderated light water cooling pressure tube reactor by controlling the concentration of poison in the heavy water moderator.
重水減速軽水冷却圧力管型原子炉においては、燃料の燃
焼による反応度補償は重水中にイオンとして解離してい
るポイズンの濃度を制御することにより行っている。こ
の重水系の系統図を第２図に示し、簡単に説明すると、
反応度を抑制したい場合にはポイズン調整槽１内の濃縮
ホウ酸溶液をポイズン注入ポンプ２によりカランドリア
タンク３に供給される重水に加えることで、カランドリ
アタンク３内の10B3+濃度を増加し、逆に反応度を促進
したい場合には重水冷却系の重水循環ポンプ４、重水冷
却器５からカランドリアタンク３に向かう重水を分岐し
て、重水浄化系の過酸化重水素分解塔６、低温化熱交換
器７、重水浄化用ポンプ８、重水浄化塔９を経たのち、
ポイズン濃度制御系のポイズン除去用陽イオン交換塔10
を経由させた後、再びカランドリアタンク３に向かう重
水に合流させて、カランドリアタンク３内の10B3+濃度
を減少させている。なお、劣化した重水は重水化塔11を
経て劣化重水貯槽12に一旦貯えられた後、重水精製系13
で精製され、重水貯槽14から重水補給ポンプ15によりカ
ランドリアタンク３に向かう重水に合流させて再利用で
きるようにしている。In heavy water moderated light water cooled pressure tube reactor, reactivity compensation by burning fuel is performed by controlling the concentration of poisons dissociated as ions in heavy water. A system diagram of this heavy water system is shown in Fig. 2 and briefly described,
If you want to suppress the reactivity, add the concentrated boric acid solution in the poison adjusting tank 1 to the heavy water supplied to the calandria tank 3 by the poison injection pump 2 to increase the concentration of 10 B 3+ in the calandria tank 3. When it is desired to increase and conversely promote the reactivity, the heavy water circulating pump 4 of the heavy water cooling system 4 and the heavy water cooler 5 are branched into the heavy water toward the calandria tank 3, and the deuterium peroxide decomposition tower 6 of the heavy water purification system is branched. After passing through the low temperature heat exchanger 7, the heavy water purification pump 8, and the heavy water purification tower 9,
Poison concentration control system poison removal cation exchange tower 10
After passing through, the heavy water heading for the calandria tank 3 is merged again to reduce the concentration of 10 B 3+ in the calandria tank 3. The deteriorated heavy water is temporarily stored in the deteriorated heavy water storage tank 12 through the heavy water conversion tower 11, and then the heavy water purification system 13 is used.
The purified water is collected from the heavy water storage tank 14 by the heavy water replenishment pump 15 to be combined with the heavy water toward the calandria tank 3 for reuse.
上記の如く、重水中にイオンとして解離しているポイズ
ンの濃度をイオン交換樹脂による吸着で制御する方式で
は、イオン交換樹脂は高温では使用できないから低温化
熱交換器７で重水温度を下げざるを得ず、これは熱経済
上大きな損失であった。またイオン交換樹脂は過酸化重
水素により性能が劣化するので、過酸化重水素分解塔６
の設置を余儀なくされた。更にイオン交換樹脂は放射線
により破壊されて微細化するため、充填しているイオン
交換樹脂を交換する必要が生じ、反復利用には限界があ
った。また、イオン交換塔10（ポイズン除去塔）を再生
するには酸、塩基の洗浄液を使うし、新樹脂の塔内への
装荷時における重水化のためにも多くの時間と廃薬液、
廃重水を生じることになった。 この発明の目的とするところは、10Bをイオンの形とし
てポイズン濃度制御していたことによって派生した上記
従来の欠点を解消する新規な出力制御法を提供すること
にある。As described above, in the method in which the concentration of poisons dissociated as ions in heavy water is controlled by adsorption by the ion exchange resin, the ion exchange resin cannot be used at high temperatures, so the temperature of heavy water must be lowered by the low temperature heat exchanger 7. No, this was a great loss in terms of thermo-economics. Also, since the performance of the ion exchange resin is deteriorated by deuterium peroxide, the deuterium peroxide decomposition tower 6
Was forced to install. Furthermore, since the ion exchange resin is destroyed by radiation and becomes finer, it is necessary to replace the ion exchange resin with which it is filled, and there is a limit to repeated use. Also, to regenerate the ion exchange tower 10 (poison removal tower), a cleaning solution of acid and base is used, and a lot of time and waste chemical solution are used for heavy water conversion when loading the new resin into the tower.
Wasted heavy water will be produced. An object of the present invention is to provide a novel output control method that solves the above-mentioned conventional drawbacks derived from the fact that the poison concentration is controlled in the form of 10 B ions.
上記目的を達成するこの発明の重水減速軽水冷却圧力管
型原子炉の出力制御法は、重水中でイオン化しない化学
的に安定なポイズン微粒子を重水減速材中に分散して供
給し、この減速材中のポイズン粒子をフィルターで除去
して重水減速材中のポイズン濃度を制御するようにした
ものである。The output control method of the heavy water moderated light water cooling pressure tube reactor of the present invention which achieves the above-mentioned object is a chemically stable poison fine particle which is not ionized in heavy water and is dispersed and supplied in the heavy water moderator. The poison particles inside are removed by a filter to control the poison concentration in the heavy water moderator.
重水減速材中のポイズン微粒子を増加すると燃料の燃焼
反応が抑制され、原子炉の出力が低下する。逆にポイズ
ン微粒子をフィルターで除去して重水減速材中のポイズ
ン微粒子を減少すると燃料の燃焼反応が促進され、原子
炉の出力が上がる。ポイズン微粒子は物理的な捕獲手段
であるフィルターで除去するので、高温重水を冷却した
りする必要は全くない。Increasing the amount of poison fine particles in the heavy water moderator suppresses the fuel combustion reaction and reduces the reactor output. Conversely, if poison particles are removed by a filter to reduce the amount of poison particles in the heavy water moderator, the combustion reaction of the fuel is promoted and the output of the reactor is increased. Since the poison fine particles are removed by a filter which is a physical capturing means, it is not necessary to cool the high temperature heavy water.
第１図に示したこの発明の重水減速軽水冷却圧力管型原
子炉の出力制御法に係る重水系統図に基ずいて説明する
と、この重水系には重水中でイオン化しない化学的に安
定なポイズン微粒子が分散混入されている。かかるポイ
ズン微粒子は10B又はGdの化学的に安定な形の例えば10B
N,10B4C,Gd2O3等の微粒状をなすものである。 一般に重水減速軽水冷却圧力管型原子炉では高々数ppm
程度の10B濃度であるから、混入したポイズン微粒子の
沈澱、局所化等は差したる問題とはならないが、重水の
比重に近いものが好ましいといえる。 ポイズン濃度を増すためポイズン微粒子を重水中に供給
するには、ポイズン調整槽１の液をポイズン注入ポンプ
２によりカランドリアタンク３に供給される重水に加え
る。この点では従来と格別変りはない。しかし、ポイズ
ン濃度を減すためポイズン微粒子を重水中から除去する
には、重水冷却系から分岐して重水浄化系の重水浄化用
ポンプ８、重水浄化塔９を経たものを、ポイズン濃度制
御系のフィルター16を通した後、再びカランドリアタン
ク３に向かう重水に合流させるのである。これを第２図
の場合と対比すると、過酸化重水素分解塔６、低温化熱
交換器７は削除され、ポイズン除去用のイオン交換塔10
の代りにフィルター16を設置していて、重水を冷却する
ことなく高温のままでポイズン微粒子を除去している点
が顕著な相違点となっている。 フィルター16の再生並びにフィルター16で捕集されたポ
イズン微粒子の回収は重水による逆洗によって可能であ
り、再生のための廃重水発生量は僅かである。再生され
たフィルター16および回収したポイズン微粒子が繰返し
再利用されることについてはいうまでもない。The heavy water system according to the power control method of the heavy water moderated light water cooling pressure tube type reactor of the present invention shown in FIG. 1 will be explained. This heavy water system is a chemically stable poison that does not ionize in heavy water. Fine particles are dispersed and mixed. Such poison microparticles are in the chemically stable form of 10 B or Gd, for example 10 B.
It is in the form of fine particles such as N, 10 B 4 C and Gd 2 O 3 . Generally, heavy water moderator Light water cooling Pressure tube reactors have a maximum of several ppm
Since the concentration is about 10 B, the precipitation and localization of the mixed poison fine particles do not cause any problems, but it can be said that those having a specific gravity close to that of heavy water are preferable. To supply the poison fine particles to the heavy water to increase the poison concentration, the liquid in the poison adjusting tank 1 is added to the heavy water supplied to the calandria tank 3 by the poison injection pump 2. This point is no different from the conventional one. However, in order to remove the poison fine particles from the heavy water in order to reduce the poison concentration, one that branches from the heavy water cooling system and goes through the heavy water purification pump 8 of the heavy water purification system and the heavy water purification tower 9 is used for the poison concentration control system. After passing through the filter 16, it joins the heavy water toward the calandria tank 3 again. Comparing this with the case of FIG. 2, the deuterium peroxide decomposition tower 6 and the low temperature heat exchanger 7 are removed, and the ion exchange tower 10 for removing the poison is removed.
In place of the above, a filter 16 is installed and the poison fine particles are removed at a high temperature without cooling the heavy water, which is a remarkable difference. Regeneration of the filter 16 and recovery of the poison fine particles collected by the filter 16 can be performed by backwashing with heavy water, and the amount of waste heavy water generated for regeneration is small. It goes without saying that the regenerated filter 16 and the recovered poison fine particles are repeatedly reused.
以上の説明から明らかなように、この発明の方法は、重
水中でイオン化しない化学的に安定なポイズン粒子を重
水減速材中に分散して供給し、この減速材中のポイズン
粒子をフィルターで除去して重水減速材中のポイズン濃
度を制御するようにしたから、重水が高温でも何の支障
もなくポイズン除去が行え、低温化熱交換器は省略で
き、熱損失をなくせる。また、フィルターの捕獲分離性
能は過酸化重水素によって左右されないから過酸化重水
素分解塔も省略できる。更にフィルターの再生は重水で
逆洗すればよく、格別の薬液を必要としないから廃薬
液、廃重水はなくなるし、ポイズン微粒子の回収がほぼ
完全にでき、それは繰返し再利用できるから、交換補充
の必要は殆ど考えなくてよい。加えてイオン交換樹脂の
場合は低イオン濃度になるとイオン交換ができなくなっ
たが、フィルターによる濾過回収では低ポイズン濃度で
も良好な除去効率をもってポイズン微粒子の除去を行え
る。As is clear from the above description, the method of the present invention disperses chemically stable poison particles that do not ionize in heavy water into a heavy water moderator and supplies the particles, and the poison particles in the moderator are removed by a filter. Since the poison concentration in the heavy water moderator is controlled, the poison can be removed without any trouble even when the heavy water is at a high temperature, and the low temperature heat exchanger can be omitted to eliminate the heat loss. Further, since the capture and separation performance of the filter is not influenced by deuterium peroxide, the deuterium peroxide decomposition tower can be omitted. Furthermore, the filter can be regenerated by backwashing with heavy water, no special chemicals are needed, and waste chemicals and heavy water are eliminated. Poison fine particles can be recovered almost completely, and it can be reused repeatedly, so replacement replacement is required. There is almost no need to think about it. In addition, in the case of an ion exchange resin, ion exchange becomes impossible at a low ion concentration, but by filtration collection with a filter, poison fine particles can be removed with good removal efficiency even at a low poison concentration.
第１図は、この発明の重水減速軽水冷却圧力管型原子炉
の出力制御法に係る重水系統図、第２図は、従来の重水
減速軽水冷却圧力管型原子炉の出力制御法に係る重水系
統図である。 １……ポイズン調整槽、２……ポイズン注入ポンプ、３
……カランドリアタンク、４……重水循環ポンプ、５…
…重水冷却器、８……重水浄化用ポンプ、９……ポイズ
ン除去塔、16……フィルター。FIG. 1 is a heavy water system diagram relating to the output control method of a heavy water moderator light water cooling pressure tube reactor of the present invention, and FIG. 2 is a heavy water system relating to the output control method of a conventional heavy water moderator light water cooling pressure pipe reactor. It is a system diagram. 1 ... Poison adjusting tank, 2 ... Poison injection pump, 3
... Calandria tank, 4 ... heavy water circulation pump, 5 ...
... heavy water cooler, 8 ... heavy water purification pump, 9 ... poison removal tower, 16 ... filter.
Claims (1)
イズン粒子を重水減速材中に分散して供給し、この減速
材中のポイズン粒子をフィルターで除去して重水減速材
中のポイズン濃度を制御することを特徴とする重水減速
軽水冷却圧力管型原子炉の出力制御法。1. A chemically stable poison particle that does not ionize in heavy water is dispersed and supplied into a heavy water moderator, and the poison particle in the moderator is removed by a filter to adjust the poison concentration in the heavy water moderator. Power control method of heavy water moderated light water cooling pressure tube reactor characterized by controlling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108948A JPH0795107B2 (en) | 1989-04-27 | 1989-04-27 | Power Control Method for Heavy Water Moderated Light Water Cooled Pressure Tube Reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108948A JPH0795107B2 (en) | 1989-04-27 | 1989-04-27 | Power Control Method for Heavy Water Moderated Light Water Cooled Pressure Tube Reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02287193A JPH02287193A (en) | 1990-11-27 |
| JPH0795107B2 true JPH0795107B2 (en) | 1995-10-11 |
Family
ID=14497706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1108948A Expired - Fee Related JPH0795107B2 (en) | 1989-04-27 | 1989-04-27 | Power Control Method for Heavy Water Moderated Light Water Cooled Pressure Tube Reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795107B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141595A (en) * | 1981-02-25 | 1982-09-01 | Tokyo Shibaura Electric Co | Nuclear reactor control device |
| JPS58100791A (en) * | 1981-12-11 | 1983-06-15 | 株式会社日立製作所 | Moderator cleaning system of heavy water reactor |
-
1989
- 1989-04-27 JP JP1108948A patent/JPH0795107B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02287193A (en) | 1990-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |