JPS6338117B2 - - Google Patents
Info
- Publication number
- JPS6338117B2 JPS6338117B2 JP13934581A JP13934581A JPS6338117B2 JP S6338117 B2 JPS6338117 B2 JP S6338117B2 JP 13934581 A JP13934581 A JP 13934581A JP 13934581 A JP13934581 A JP 13934581A JP S6338117 B2 JPS6338117 B2 JP S6338117B2
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- storage tank
- waste
- water
- shaft sealing
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 239000002699 waste material Substances 0.000 claims description 42
- 238000007789 sealing Methods 0.000 claims description 38
- 238000004140 cleaning Methods 0.000 claims description 19
- 239000002901 radioactive waste Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 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 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Pipeline Systems (AREA)
Description
【発明の詳細な説明】
本発明は、原子力プラントの水処理系廃棄物移
送装置の洗浄用貯水タンクと、廃棄物移送ポンプ
の軸封用給水タンクを単一のタンクで共用した放
射性廃棄物処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a radioactive waste treatment system in which a single tank is used as a water storage tank for cleaning waste transfer equipment of a nuclear power plant water treatment system and a water supply tank for sealing the shaft of a waste transfer pump. Regarding equipment.
一般に原子力プラントにおいて排出される放射
性廃棄物のうち、水処理系から発生する使用済イ
オン交換樹脂スラリー、濃縮廃液等の廃棄物は、
第１図に示す如く、廃棄物貯蔵タンク１に一定期
間貯蔵された後、廃棄物移送ポンプ２により固化
設備３へ移送され、ここでドラム缶４に入れてセ
メントまたはアスフアルト等により固化処理され
る。 Among the radioactive wastes generally discharged from nuclear power plants, wastes such as used ion exchange resin slurry and concentrated waste liquid generated from water treatment systems are
As shown in FIG. 1, after being stored in a waste storage tank 1 for a certain period of time, the waste is transferred by a waste transfer pump 2 to a solidification facility 3, where it is placed in a drum 4 and solidified with cement, asphalt, or the like.
一方このように構成された廃棄物移送装置５の
配管系の洗浄には、通常洗浄水供給装置６より得
られる一定温度以上の温水が使用される。これ
は、たとえば濃縮廃液の場合、その主成分である
硫酸ナトリウムは約33℃以下になると急激に溶解
度が低下して結晶が折出し、廃棄物移送装置３の
配管系を閉塞するおそれがあるためである。な
お、上記洗浄水供給装置６は、洗浄用貯水タンク
７、このタンク７内の温水を前記廃棄物移送装置
５の配管系へ供給する洗浄水供給ポンプ８および
これらに付属する洗浄用配管系９等より構成され
ている。 On the other hand, hot water of a certain temperature or higher obtained from the washing water supply device 6 is usually used to wash the piping system of the waste transfer device 5 configured as described above. This is because, for example, in the case of concentrated waste liquid, the solubility of the main component, sodium sulfate, decreases rapidly when the temperature drops below approximately 33°C, and crystals may precipitate, potentially clogging the piping system of the waste transfer device 3. It is. The cleaning water supply device 6 includes a cleaning water storage tank 7, a cleaning water supply pump 8 that supplies hot water in the tank 7 to the piping system of the waste transfer device 5, and a cleaning piping system 9 attached thereto. It is composed of etc.
また、前記廃棄物移送装置５における廃棄物移
送ポンプ２の軸封にはメカニカルシールが使用さ
れる。このため、メカニカルシールに必要な軸封
水を供給する廃棄物移送ポンプ軸封用給水装置１
０が必要となる。この軸封用給水装置１０は、軸
封用給水タンク１１、このタンク１１内の軸封水
を前記廃棄物移送ポンプ２の軸封部へ供給する軸
封用給水ポンプ１２およびこれらに付属する軸封
用配管系１３等より構成されている。 Further, a mechanical seal is used for the shaft seal of the waste transfer pump 2 in the waste transfer device 5. For this reason, the waste transfer pump shaft sealing water supply device 1 supplies the shaft sealing water necessary for the mechanical seal.
0 is required. This shaft sealing water supply device 10 includes a shaft sealing water supply tank 11, a shaft sealing water supply pump 12 that supplies shaft sealing water in the tank 11 to the shaft sealing portion of the waste transfer pump 2, and a shaft attached thereto. It is composed of a sealing piping system 13 and the like.
ところが、このような従来の放射性廃棄物処理
装置は洗浄用貯水タンク７と軸封用給水タンク１
１とが別々に設けられているので構成が繁雑で、
保守点検を要する箇所も多く、広い設置スペース
を要し、また軸封用給水タンクが故障、点険等に
より使用不能となつた場合にはその期間中、廃棄
物移送装置を停止させねばならない不具合があつ
た。 However, such conventional radioactive waste processing equipment has a cleaning water storage tank 7 and a shaft sealing water supply tank 1.
The configuration is complicated because 1 and 1 are provided separately.
There are many parts that require maintenance and inspection, and a large installation space is required.Furthermore, if the shaft sealing water tank becomes unusable due to failure or damage, the waste transfer equipment must be stopped during that period. It was hot.
本発明は、このような事情にもとづいてなされ
たもので、その目的は、原子炉プラントの水処理
系廃棄物移送装置の洗浄用貯水タンクと廃棄用移
送ポンプの軸封用給水タンクとを単一のタンクで
共用することによつて、構成を簡略にし保守点検
も容易にし、かつ設置スペースを狭めることを可
能にするとともに、洗浄水供給ポンプと軸封用給
水ポンプとを並列に接続して、一方のポンプが故
障または保守点検などで使用できなくなつた場合
に、他方のポンプで代用することを可能にし、こ
れによつて信頼性の向上をも図りうる放射性廃棄
物処理装置を提供することにある。 The present invention was made based on the above circumstances, and its purpose is to simply separate the cleaning water storage tank of the water treatment system waste transfer equipment of a nuclear reactor plant and the shaft sealing water supply tank of the waste transfer pump. Sharing one tank simplifies the configuration, makes maintenance and inspection easier, and reduces installation space.In addition, the cleaning water supply pump and the shaft sealing water supply pump can be connected in parallel. To provide a radioactive waste processing device that allows the other pump to be used as a substitute when one pump becomes unusable due to failure or maintenance inspection, thereby improving reliability. There is a particular thing.
以下本発明の詳細を第２図に示す実施例にもと
づいて説明する。なお、廃棄物移送装置５の構成
は第１図と同様であるから、同一符号で示してあ
る。 The details of the present invention will be explained below based on the embodiment shown in FIG. The configuration of the waste transfer device 5 is the same as that in FIG. 1, so it is indicated by the same reference numerals.
図中１４は貯水タンクで、この貯水タンク１４
内には、一定温度以上に保たれた温水が貯えられ
ており、このタンク１４には２系統の循環配管１
５，１６が接続されている。そして、その一方の
循環配管１５中には軸封用給水ポンプ１７が、ま
た他方の循環配管１６中には、洗浄水供給ポンプ
１８が、それぞれ接続されている。また、上記軸
封用給水ポンプ１７の吐出側は軸封水供給配管１
９を介して廃棄物移送装置５の廃棄物移送ポンプ
２の軸封部に接続され、また、上記洗浄水供給ポ
ンプ１８の吐出側は、洗浄水供給配管２０を介し
て廃棄物移送装置５の配管系に接続されている。
また軸封用給水ポンプ１７と洗浄水供給ポンプ１
８の各吐出側間には機能切換弁としての仕切弁２
１が介挿されている。そして上記軸封用給水ポン
プ１７の吐出側には圧力検出器２２が接続されて
いる。この検出器２２は軸封用給水ポンプ１７の
吐出圧が一定値まで低下したとき、これを検出し
て圧力低下検出信号を発生するものである。 14 in the figure is a water storage tank, and this water storage tank 14
Inside, hot water kept above a certain temperature is stored, and this tank 14 has two circulation pipes 1
5 and 16 are connected. A shaft sealing water supply pump 17 is connected to one of the circulation pipes 15, and a cleaning water supply pump 18 is connected to the other circulation pipe 16. Further, the discharge side of the shaft sealing water supply pump 17 is connected to the shaft sealing water supply pipe 1.
9 to the shaft seal of the waste transfer pump 2 of the waste transfer device 5, and the discharge side of the wash water supply pump 18 is connected to the waste transfer pump 2 of the waste transfer device 5 via the wash water supply pipe 20. Connected to the piping system.
In addition, the shaft sealing water supply pump 17 and the cleaning water supply pump 1
Between each discharge side of 8, there is a gate valve 2 as a function switching valve.
1 is inserted. A pressure detector 22 is connected to the discharge side of the shaft sealing water supply pump 17. This detector 22 detects when the discharge pressure of the shaft sealing water supply pump 17 drops to a certain value and generates a pressure drop detection signal.
一方、図中２３は任意の水補給源２４と前記循
環配管１５との間を接続する水補給配管で、この
水補給配管２３中には電磁弁２５が介挿され、こ
の弁２５は、前記圧力検出器２２からの検出信号
を受けて開弁するように構成されている。 On the other hand, numeral 23 in the figure is a water supply pipe that connects an arbitrary water supply source 24 and the circulation pipe 15, and a solenoid valve 25 is inserted in this water supply pipe 23. The valve is configured to open upon receiving a detection signal from the pressure detector 22.
次にこの実施例の動作を説明する。 Next, the operation of this embodiment will be explained.
まず、廃棄物移送装置５については、従来と同
様に、廃棄物貯蔵タンク１内に一定期間貯蔵され
た廃棄物を廃棄物移送ポンプ２により固化設備３
へ移送して、ドラム缶４に入れセメントまたはア
スフアルト等で固化処理する。 First, regarding the waste transfer device 5, as in the conventional case, the waste stored in the waste storage tank 1 for a certain period of time is transferred to the solidification equipment 3 by the waste transfer pump 2.
It is then transferred to a drum can 4 and solidified with cement or asphalt.
また、前記仕切弁２１は常時は閉成しており、
軸封用給水ポンプ１７を運転することにより、貯
水タンク１４内の温水を廃棄物移送装置５におけ
る廃棄物移送ポンプ２の軸封部へほぼ一定圧力で
供給し、軸封用給水ポンプ１７の流量の残部は循
環配管１５を介して貯水タンク１４内へ循環す
る。そして貯水タンク１４内の水位低下により軸
封用給水ポンプ１７の吐出圧が一定値まで低下す
ると、圧力検出器２２が圧力低下検出信号を電磁
弁２５へ送出し、この電磁弁２５を開弁させて水
補給源２４より貯水タンク１４内への給水がなさ
れる。そして貯水タンク１４内の水位回復により
軸封用給水ポンプ１７の吐出圧が回復すると、電
磁弁２５が閉弁して水補給源２４からの給水が停
止する。 Further, the gate valve 21 is normally closed,
By operating the shaft sealing water supply pump 17, the hot water in the water storage tank 14 is supplied to the shaft sealing portion of the waste transfer pump 2 in the waste transfer device 5 at a substantially constant pressure, and the flow rate of the shaft sealing water supply pump 17 is reduced. The remainder is circulated into the water storage tank 14 via the circulation pipe 15. When the discharge pressure of the shaft sealing water supply pump 17 drops to a certain value due to a drop in the water level in the water storage tank 14, the pressure detector 22 sends a pressure drop detection signal to the solenoid valve 25, causing the solenoid valve 25 to open. Water is supplied into the water storage tank 14 from the water supply source 24. When the water level in the water storage tank 14 recovers and the discharge pressure of the shaft sealing water supply pump 17 recovers, the solenoid valve 25 closes and the water supply from the water supply source 24 is stopped.
また、軸封用給水ポンプ１７が故障または保守
点検等で使用できなくなつた場合には仕切弁２１
を開弁し、洗浄水供給ポンプ１８を運転する。そ
うすると、貯水タンクタンク１４内の水は洗浄水
供給ポンプ１８により引出され、仕切弁２１を介
して軸封水供給配管１９より廃棄物移送ポンプ２
の軸封部へ供給されることになる。 In addition, if the shaft sealing water supply pump 17 becomes unusable due to a breakdown or maintenance inspection, the gate valve 21
The valve is opened and the wash water supply pump 18 is operated. Then, the water in the water storage tank 14 is drawn out by the cleaning water supply pump 18, and the waste transfer pump 2
The oil will be supplied to the shaft sealing section.
次に、廃棄物移送装置５の配管系の洗浄を行な
うには、仕切弁２１を閉弁し、洗浄水供給ポンプ
１８を運転すればよい。これによつて貯水タンク
１４内の温水は洗浄水供給配管２０を通して廃棄
物移送装置５の配管系に供給され、これを洗浄す
ることができる。なお、洗浄水供給ポンプ１８が
故障または保守点検等で使用できなくなつた場合
には、仕切弁２１を開弁し、軸封用給水ポンプ１
７を温水供給用として使用することができる。
尚、水補給配管２３を水補給源２４と軸封水供給
配管１９との間に配設し、そこに電磁弁２５を介
挿してもよい。この場合には軸封用給水ポンプ１
７の異常停止、或いは故障等により吐出圧力が低
下した場合にも、上記電磁弁２５が開弁すること
により水補給源２４からの水を軸封用として直接
供給することができる。 Next, in order to clean the piping system of the waste transfer device 5, it is sufficient to close the gate valve 21 and operate the cleaning water supply pump 18. As a result, the hot water in the water storage tank 14 is supplied to the piping system of the waste transfer device 5 through the cleaning water supply piping 20, so that it can be cleaned. If the cleaning water supply pump 18 breaks down or becomes unusable due to maintenance or inspection, the gate valve 21 is opened and the shaft sealing water supply pump 1 is turned off.
7 can be used for hot water supply.
Note that the water supply pipe 23 may be disposed between the water supply source 24 and the shaft sealing water supply pipe 19, and the solenoid valve 25 may be inserted therein. In this case, the shaft sealing water supply pump 1
Even if the discharge pressure decreases due to an abnormal stop or failure of the pump 7, water from the water supply source 24 can be directly supplied for shaft sealing by opening the electromagnetic valve 25.
以上詳述したように、本発明の放射性廃棄物処
理装置によれば、洗浄水供給ポンプと軸封用給水
ポンプとを貯水タンクに並列接続した構成である
から、従来、別個に設けられていた洗浄用貯水タ
ンクと軸封用給水タンクを単一の貯水タンクで共
用することができ、これによつて構成が簡略にな
り、保守点検も容易になり、設置スペースを狭め
ることができる。また、上記両ポンプの吐出側間
に機能切換弁を介挿したことにより、一方のポン
プが使用できない状態になつたとき他方で代用す
ることができ、信頼性の向上を図ることができ
る。 As described in detail above, according to the radioactive waste processing apparatus of the present invention, the cleaning water supply pump and the shaft sealing water supply pump are connected in parallel to the water storage tank. A single water storage tank can be used in common as the water storage tank for cleaning and the water supply tank for shaft sealing, which simplifies the configuration, facilitates maintenance and inspection, and reduces installation space. Further, by inserting a function switching valve between the discharge sides of both pumps, when one pump becomes unusable, the other can be used instead, improving reliability.
第１図は従来の放射性廃棄物処理装置の概略構
成図、第２図は本発明の一実施例における放射性
廃棄物処理装置の概略構成図である。
１…廃棄物貯蔵タンク、２…廃棄物移送ポン
プ、３…固化設備、５…廃棄物移送装置、１４…
貯水タンク、１７…軸封用給水ポンプ、１８…洗
浄水供給ポンプ、１９…軸封水供給配管、２０…
洗浄水供給配管、２１…仕切弁、２２…圧力検出
器、２５…電磁弁。
FIG. 1 is a schematic diagram of a conventional radioactive waste treatment apparatus, and FIG. 2 is a schematic diagram of a radioactive waste treatment apparatus according to an embodiment of the present invention. 1...Waste storage tank, 2...Waste transfer pump, 3...Solidification equipment, 5...Waste transfer device, 14...
Water storage tank, 17...Shaft sealing water supply pump, 18...Washing water supply pump, 19...Shaft sealing water supply piping, 20...
Cleaning water supply piping, 21...Gate valve, 22...Pressure detector, 25...Solenoid valve.
Claims (1)
ンプにより固化設備へ移送して固化処理する廃棄
物移送装置と、水を貯留した貯水タンクと、この
貯水タンクに接続され貯水タンク内の水を前記廃
棄物移送ポンプの軸封部へ供給する軸封用給水ポ
ンプと、前記貯水タンクに接続され前記廃棄物移
送装置の配管系へ貯水タンク内の水を供給する洗
浄水供給ポンプと、前記軸封用給水ポンプと洗浄
水供給ポンプの各吐出側間に接続された機能切換
弁とを具備したことを特徴とする放射性廃棄物処
理装置。 ２ 前記貯水タンクへ水補給する水補給配管中に
介挿された常閉弁を、前記軸封用給水ポンプの吐
出圧を検出する圧力検出器からの圧力低下検出信
号により開弁させるように構成したことを特徴と
する特許請求の範囲第１項記載の放射性廃棄物処
理装置。[Scope of Claims] 1. A waste transfer device that transfers waste in a waste storage tank to a solidification facility for solidification treatment using a waste transfer pump, a water storage tank that stores water, and a waste storage tank that is connected to the water storage tank. a shaft sealing water supply pump that supplies water in the water storage tank to the shaft sealing portion of the waste transfer pump; and a cleaning water supply pump that is connected to the water storage tank and supplies water in the water storage tank to the piping system of the waste transfer device. A radioactive waste processing apparatus comprising: a supply pump; and a function switching valve connected between each discharge side of the shaft sealing water supply pump and the cleaning water supply pump. 2 A normally closed valve inserted in a water supply pipe that supplies water to the water storage tank is configured to be opened by a pressure drop detection signal from a pressure detector that detects the discharge pressure of the shaft sealing water supply pump. A radioactive waste treatment apparatus according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13934581A JPS5841397A (en) | 1981-09-04 | 1981-09-04 | Radioactive waste treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13934581A JPS5841397A (en) | 1981-09-04 | 1981-09-04 | Radioactive waste treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5841397A JPS5841397A (en) | 1983-03-10 |
| JPS6338117B2 true JPS6338117B2 (en) | 1988-07-28 |
Family
ID=15243160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13934581A Granted JPS5841397A (en) | 1981-09-04 | 1981-09-04 | Radioactive waste treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841397A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62294900A (en) * | 1986-06-13 | 1987-12-22 | 佐藤工業株式会社 | Method of blasing reinforcing construction |
-
1981
- 1981-09-04 JP JP13934581A patent/JPS5841397A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5841397A (en) | 1983-03-10 |
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