JPS62136283A - Method of washing piping - Google Patents

Method of washing piping

Info

Publication number
JPS62136283A
JPS62136283A JP60275140A JP27514085A JPS62136283A JP S62136283 A JPS62136283 A JP S62136283A JP 60275140 A JP60275140 A JP 60275140A JP 27514085 A JP27514085 A JP 27514085A JP S62136283 A JPS62136283 A JP S62136283A
Authority
JP
Japan
Prior art keywords
cleaning
piping
cleaning agent
cleaned
pipe
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.)
Pending
Application number
JP60275140A
Other languages
Japanese (ja)
Inventor
要 松本
日下 謙一
潤 吉川
仁志 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Original Assignee
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Nippon Atomic Industry Group Co Ltd filed Critical Toshiba Corp
Priority to JP60275140A priority Critical patent/JPS62136283A/en
Publication of JPS62136283A publication Critical patent/JPS62136283A/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 [発明の技術分野1 本発明は、配管の洗浄方法に関する。[Detailed description of the invention] [Technical field of invention 1 The present invention relates to a method for cleaning piping.

[発明の技術的背景とその問題点] 配管系統の洗浄において、洗浄対象配管の始点と終点と
が遠く離れておりかつ配管経路が人のアクセスしにくい
困難な場所に設置されている場合がある。このような場
合でも、洗浄剤が安価で大量に入手できかつ洗浄廃液を
簡単に放流できるときには、洗浄対象配管の一端から洗
浄剤を流し込んでその洗浄対象配管の他端から洗浄廃液
を放流するように構成した配管の洗浄方法を採用するこ
とができるが、現状では多くの場合洗浄剤は高価であり
、また環境汚染等の外的要因等から洗浄廃液も簡単に廃
棄することはできない。
[Technical background of the invention and its problems] When cleaning a piping system, there are cases where the start and end points of the piping to be cleaned are far apart and the piping route is installed in a difficult location that is difficult for people to access. . Even in such cases, if the cleaning agent is cheap and available in large quantities and the cleaning waste can be easily discharged, it is recommended to pour the cleaning agent into one end of the pipe to be cleaned and discharge the cleaning waste from the other end of the pipe to be cleaned. However, the cleaning agent is currently expensive in most cases, and cleaning waste liquid cannot be easily disposed of due to external factors such as environmental pollution.

そこで、上記したような配管系統の洗浄において、洗浄
対象配管にさらに戻り配管を設けて循環ラインを構成し
、この循環ライン内に粒子(例えばカチオンイオン交換
樹脂粒子、ポリエステル粒子、チクニヤ粒子。ジルコニ
ア粒子等)と薬液(例えば鉱酸等の無機系薬液、有機酸
、界面活性剤等の有機系薬液等)とを交互に流通させて
洗浄対象配管を洗浄する方法が行なわれている。しかし
ながら、このような洗浄方法では粒子が配管内面に付着
したスケールを剥離するとき配管内面をも研磨すること
になるので、配管母材を傷めるという不具合があった。
Therefore, in cleaning the piping system as described above, a return piping is further provided in the piping to be cleaned to form a circulation line, and particles (such as cation ion exchange resin particles, polyester particles, chikunya particles, zirconia particles, etc.) are placed in this circulation line. A method of cleaning the piping to be cleaned is carried out by alternately flowing a chemical liquid (for example, an inorganic chemical liquid such as a mineral acid, an organic chemical liquid such as an organic acid or a surfactant, etc.). However, in such a cleaning method, when the scale particles attached to the inner surface of the pipe are removed, the inner surface of the pipe is also polished, which causes damage to the base material of the pipe.

また、放射性同位元素使用設備、原子力設備などのよう
に配管が遮蔽の中やホットセルの中を通っていて戻り配
管を布設したくても簡単に引けない場合、例えば汚染地
区あるいは遮蔽の不十分な区域などの場合には戻り配管
を設置することができない。しかも、かかる施設では万
一のためのリーク防止対策も必要であり、仮設工事とし
て放射性流体をパイプ輸送する場合でも相当な保安対策
が必要であるので高価になる。さらに、通常放射能を使
用しないエリアに放射能廃液用の配管を通す場合は許認
可が必要であり、このために工期がかかるという不具合
があった。
In addition, if the piping runs through shielding or hot cells, such as equipment using radioactive isotopes or nuclear power equipment, and it is difficult to install return piping even if you want to install it, for example, in a contaminated area or with insufficient shielding. In some cases, such as areas, return piping cannot be installed. Furthermore, such facilities require measures to prevent leaks in case of emergency, and even when radioactive fluid is transported through pipes as part of temporary construction work, considerable security measures are required, resulting in high costs. In addition, permissions are required when running radioactive waste liquid piping in areas where radioactivity is not normally used, which poses the problem of long construction times.

そこで、配管母材を傷めることもなくかつ洗浄剤の使用
量を少なくするとともに洗浄に伴なう廃液量をも少なく
し、さらに、安価でかつ簡単な構成の配管の洗浄方法の
開発が望まれていた。
Therefore, it is desired to develop a method for cleaning piping that does not damage the base material of the piping, reduces the amount of cleaning agent used, reduces the amount of waste liquid associated with cleaning, and is inexpensive and has a simple configuration. was.

[発明の目的] 本発明は、上記事情に篤みてなされたもので、その目的
は、配管系統の洗浄において配管の循環洗浄方法あるい
は機械的な洗浄方法が採れない場合でも簡単な構成で有
効な洗浄作用のある配管の洗浄方法を提供することにあ
る。
[Object of the Invention] The present invention has been made in consideration of the above-mentioned circumstances, and its purpose is to provide a simple and effective method for cleaning piping systems even when a circulating cleaning method or a mechanical cleaning method for piping cannot be used. An object of the present invention is to provide a method for cleaning piping that has a cleaning effect.

[発明の概要] 本発明は、上記目的を達成するために、洗浄対象配管の
両端にそれぞれ洗浄装置を連結し、一方の洗浄装置内に
滞留している洗浄流体を前記配管の一端から流入し該配
管の他端から流出させて該配管の他端に連結した他方の
洗浄装置に受tプた後、再び前記洗浄流体を前記配管内
を通して送り返す工程を1回以上繰り返して前記配管内
を洗浄するようにした配管の洗浄方法に関するものであ
る。
[Summary of the Invention] In order to achieve the above object, the present invention connects cleaning devices to both ends of a pipe to be cleaned, and causes cleaning fluid stagnant in one of the cleaning devices to flow in from one end of the pipe. After flowing out from the other end of the piping and receiving it in the other cleaning device connected to the other end of the piping, the process of sending the cleaning fluid back through the piping is repeated one or more times to clean the inside of the piping. The present invention relates to a method for cleaning piping.

そして、洗浄流体としては洗浄剤または洗浄剤と粒子と
からなる流体が用いられており、また洗浄装置としては
スキッドまたはキャッチングローダが使用される。
A cleaning agent or a fluid consisting of a cleaning agent and particles is used as the cleaning fluid, and a skid or a catching loader is used as the cleaning device.

[発明の実施例] 本発明の実施例を図面を参照して説明する。[Embodiments of the invention] Embodiments of the present invention will be described with reference to the drawings.

第1図は本発明の一実施例の概略系統図を示すもので、
洗浄対象配管1の両端にそれぞれ1台のスキッド2A、
2Bを設置する。これらスキッド2A、2Bはそれぞれ
洗浄剤タンク3A、3B1ポンプ4A、4B、レベル検
出器5A、5B、送液弁6A、6B、受液弁7A、7B
および連結配管8A、8Bとから構成されている。洗浄
対象配管1の一端に設置されるスキッド2Aのタンク3
Aには洗浄対象配管1を満たしかつタンク3Aに幾分の
残留mが残る程度の洗浄剤を張り込む。この洗浄剤は送
液弁6Aを介してポンプ4Aで洗浄対象配管1に送り込
み洗浄対象配管1の他端に設置されたスキッド2Bの洗
浄剤タンク3Bに流入される。そして、洗浄剤タンク3
Aが空または規定レベルまで低下したらポンプ4Aを止
め、次は反対側の洗浄剤タンク3B内に存在する洗浄剤
をポンプ4Bにより送液弁6Bを介して洗浄対象配管1
に送り込み、スキッド2Aの洗浄剤タンク3A内に流入
する。また、洗浄剤タンク3A、3B内の洗浄剤のレベ
ルを検出するレベル検出器5A。
FIG. 1 shows a schematic system diagram of an embodiment of the present invention.
One skid 2A at each end of the pipe 1 to be cleaned,
Install 2B. These skids 2A, 2B are respectively cleaning agent tanks 3A, 3B1 pumps 4A, 4B, level detectors 5A, 5B, liquid sending valves 6A, 6B, liquid receiving valves 7A, 7B.
and connecting pipes 8A and 8B. Tank 3 of skid 2A installed at one end of pipe 1 to be cleaned
Fill A with enough cleaning agent to fill the pipe 1 to be cleaned and leave some residual m in the tank 3A. This cleaning agent is sent into the pipe 1 to be cleaned by the pump 4A via the liquid sending valve 6A, and flows into the cleaning agent tank 3B of the skid 2B installed at the other end of the pipe 1 to be cleaned. And cleaning agent tank 3
When A is empty or has decreased to a specified level, stop the pump 4A, and then pump the cleaning agent present in the cleaning agent tank 3B on the opposite side to the pipe 1 to be cleaned via the liquid sending valve 6B.
and flows into the cleaning agent tank 3A of the skid 2A. Further, a level detector 5A detects the level of the cleaning agent in the cleaning agent tanks 3A and 3B.

5Bによりポンプ4A、4Bは自動的にオンオフし、ポ
ンプ4A、4Bが交互に起動するように構成されている
。例えば、長さ250mの4配管では、必要流量は約2
mであり、これにタンクの底を満たすに必要な数101
を加えたものが必要最少の洗浄剤量になる。したがって
、洗浄剤量としての有効量は2.5m程度のものになる
。また、洗浄対象配管1内を流れる洗浄剤の流速は早い
方が洗浄効果はあるが、化学洗浄の場合は数10cm/
 380以上の流速があれば十分であるので、ポンプ8
吊は15m /h以上あれば十分ということになる。
The pumps 4A and 4B are automatically turned on and off by the pump 5B, and the pumps 4A and 4B are configured to be activated alternately. For example, for four pipes with a length of 250 m, the required flow rate is approximately 2
m, plus the number 101 required to fill the bottom of the tank
The minimum amount of cleaning agent required is the amount of cleaning agent added. Therefore, the effective amount of cleaning agent is about 2.5 m. In addition, the faster the flow rate of the cleaning agent flowing inside the pipe 1 to be cleaned, the more effective the cleaning will be, but in the case of chemical cleaning, the flow rate is several tens of cm/
Since a flow rate of 380 or more is sufficient, pump 8
A suspension of 15 m/h or more is sufficient.

第2図は本発明の他の実施例の概略系統図である。FIG. 2 is a schematic system diagram of another embodiment of the present invention.

本実施例は化学洗浄法を適用した場合であり、同図に示
すように、洗浄対象配管1の両端に夫々1台の粒子キャ
ッチングローダIOA、10Bが設置されている。この
キャッチングローダ10A。
In this embodiment, a chemical cleaning method is applied, and as shown in the figure, one particle catching loader IOA, 10B is installed at each end of the pipe 1 to be cleaned. This catching loader 10A.

10Bは、それぞれ連結配管17A、17Bを介して洗
浄剤タンク11△、11Bおよびポンプ12A、12B
に接続されている。また送液時の流量および圧力を計測
するための流量計13A、13Bおよび圧力計14A、
14Bが洗浄剤タンク11A、11Bの出口側の連結配
管17A、17Bに設置されている。なお、15A、1
5Bは受液弁、16A、16Bは送液弁である。
10B is connected to cleaning agent tanks 11Δ, 11B and pumps 12A, 12B via connecting pipes 17A, 17B, respectively.
It is connected to the. Also, flowmeters 13A, 13B and pressure gauge 14A for measuring flow rate and pressure during liquid feeding,
14B are installed in connecting pipes 17A and 17B on the outlet side of the cleaning agent tanks 11A and 11B. In addition, 15A, 1
5B is a liquid receiving valve, and 16A and 16B are liquid sending valves.

第3図はキャッチングローダ10Aの縦断面図であり、
同図に示すように、キャッチングローダ10Aの容器本
体18Aは下部が円錐形をなしており、最下部の開口部
19Aはバルブ9A(第2図参照)を介して洗浄対象配
管1に接続されている。また0、5n+m以下の細いメ
ツシュのストレーナ2OAが容器本体18Aの上部から
挿入されており、その上部のフランジ部21Aはワンタ
ッチクランプ22Aによって容器本体18Aの上部7ラ
ンジと係合している。さらに、ストレーナ20△の上部
開口部23Aは連結配管17Aを介して洗浄剤タンク1
1Aに接続されている。さらに、キッチングローダ容器
本体18A中には例えば粒状カチオンイオン交換樹脂粒
子24を101入れ、下部のバルブ9Aを締めておく。
FIG. 3 is a longitudinal sectional view of the catching loader 10A,
As shown in the figure, the lower part of the container body 18A of the catching loader 10A has a conical shape, and the lowermost opening 19A is connected to the pipe 1 to be cleaned via a valve 9A (see Figure 2). There is. Further, a thin mesh strainer 2OA of 0.5n+m or less is inserted from the upper part of the container body 18A, and the upper flange portion 21A is engaged with the upper 7 flange of the container body 18A by a one-touch clamp 22A. Furthermore, the upper opening 23A of the strainer 20Δ is connected to the cleaning agent tank 1 through the connecting pipe 17A.
Connected to 1A. Further, for example, granular cation exchange resin particles 24 are placed 101 in the kitchen grooder container main body 18A, and the lower valve 9A is closed.

洗浄剤タンク11△に薬液を2.5III入れておき、
バルブ16Aを開き、弁15Aを開けてポンプ12Aを
起動し、薬液を回しておく。次に、弁9B、弁15Bを
開き、さらに弁15Aを締めて弁9Aを開くと、前記粒
子は、薬液で洗浄対象配管1内に押し出されて反対側の
キャッチングローダ10Bに集められ、また薬液は洗浄
剤タンク11B内に集められる。
Pour 2.5III of the chemical solution into the cleaning agent tank 11△,
Open the valve 16A, open the valve 15A, start the pump 12A, and circulate the chemical solution. Next, when the valve 9B and the valve 15B are opened, and the valve 15A is further tightened and the valve 9A is opened, the particles are pushed out with the chemical solution into the pipe 1 to be cleaned and collected in the catching loader 10B on the opposite side. is collected in the cleaning agent tank 11B.

本実施例は上記したように、洗浄流体の交互洗浄毎に粒
子を2台のキャッチングローダ10A。
As described above, in this embodiment, two catching loaders 10A are used to catch particles each time the cleaning fluid is used for alternate cleaning.

10B間で往復させるように構成したものである。It is configured to make a round trip between 10B and 10B.

また、化学洗浄剤に侵されない粒子を1m/sec以上
の速度で流すことにより(粒子を流す場合は上記実施例
よりも流速は早い方がよい)粒子が壁面を擦るので、単
に化学洗浄剤を流すよりも大きなシェアストレスを内壁
に与えスケールの剥離および溶解の促進を行なうことが
できる。例えば、化学洗浄剤量250+、ポンプ揚程2
0m、流量5m”/h、連絡配管フレキシブルホース4
0A。
In addition, by flowing particles that are not attacked by chemical cleaning agents at a speed of 1 m/sec or more (when flowing particles, it is better to use a faster flow rate than in the above example), the particles will rub against the wall surface, so simply apply the chemical cleaning agent. It is possible to apply greater shear stress to the inner wall than by flowing, thereby promoting scale peeling and dissolution. For example, chemical cleaning agent amount 250+, pump lift 2
0m, flow rate 5m”/h, connection piping flexible hose 4
0A.

弁頭ボールバルブ、キャッチングローダ粒子量101で
40Aの鋼製配管を洗浄剤と粒子とで洗浄する。洗浄液
を流している時間は薬品の種類により変るが、8時間か
ら24時間で充分洗浄できる。
Valve head ball valve, catching loader A 40A steel pipe is cleaned with a cleaning agent and particles at a particle amount of 101. The time for which the cleaning solution is poured varies depending on the type of chemical, but sufficient cleaning can be achieved in 8 to 24 hours.

このとき洗浄流量は最大5Il13/hであるが、配管
長が長い場合は圧損が大きくなり、1+n3/h程度ま
で低下する。
At this time, the maximum cleaning flow rate is 5Il13/h, but if the piping length is long, the pressure loss becomes large and it decreases to about 1+n3/h.

[発明の効果] 以上説明したように、本発明によれば洗浄対象配管の両
端を適当なセルまたはタンクで切り離し、洗浄スキッド
を連結して洗浄すれば許認可の点からもまた工期工費の
点からも有利になる。
[Effects of the Invention] As explained above, according to the present invention, if both ends of the piping to be cleaned are separated with appropriate cells or tanks, and the cleaning skids are connected together for cleaning, it is possible to improve the efficiency from the viewpoint of approval and approval, as well as construction period and cost. will also be advantageous.

ア また、使用洗浄剤量は配管のホールドマツプ吊にポンプ
のキャビテーション防止用の若干の是を加えたものでよ
く、特に原子カプラントにおいては放射性廃棄物の発生
量が少なく、さらに廃液が出ないのがよい。
In addition, the amount of cleaning agent used may be the same as the amount of cleaning agent used for holding the pipes and adding some measures to prevent cavitation of the pump.Especially in nuclear couplants, the amount of radioactive waste generated is small and there is no waste liquid. Good.

さらに、洗浄液を周期的に流しているので、流し始めの
時点で配管壁に強いシェアストレスを与え、スケールを
剥離させるので、スケールの除去に有利になる。しかも
、戻り配管の布設撤去がない分作業区域が狭く限定され
、原子力関係の施設の洗浄では工事管理に有利になる。
Furthermore, since the cleaning liquid is flowed periodically, strong shear stress is applied to the piping wall at the beginning of the flow, causing scale to peel off, which is advantageous in removing scale. Furthermore, since there is no need to install or remove return piping, the work area is narrowly limited, which is advantageous for construction management when cleaning nuclear power related facilities.

また従来方法のように往路配管があると、保管機器が増
加し倉庫保管費が増大するが、本発明では比較的コンパ
クトなスキッド2台と連結配管を使用するのみであるか
ら保管スペースを取らず保管に有利である等のすぐれた
効果を奏する。
In addition, if there is an outbound pipe as in the conventional method, the number of storage devices increases and the warehouse storage cost increases, but the present invention uses only two relatively compact skids and connecting pipes, so it does not take up storage space. It has excellent effects such as being advantageous for storage.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例の概略系統図、第2図は本発
明の他の実施例の概略系統図、第3図は第2図のキャッ
チングローダの縦断面図である。 1・・・洗浄対象配管、2A、2B・・・スキッド3△
、38.11A、11B・・・洗浄剤タンク4A、4B
、12A、12B・・・ポンプ5A、5B・・・レベル
検出器 10A、IOB・・・キャッチングローダ(8733)
代理人弁理士 猪 股 社 晃(ほか 1名) 第 2I!f 23A 第 3  圀
FIG. 1 is a schematic system diagram of one embodiment of the present invention, FIG. 2 is a schematic system diagram of another embodiment of the invention, and FIG. 3 is a longitudinal sectional view of the catching loader of FIG. 2. 1... Piping to be cleaned, 2A, 2B... Skid 3△
, 38.11A, 11B...Cleaning agent tank 4A, 4B
, 12A, 12B... Pump 5A, 5B... Level detector 10A, IOB... Catching loader (8733)
Representative Patent Attorney Akira Inokosha (and 1 other person) 2nd I! f 23A 3rd area

Claims (3)

【特許請求の範囲】[Claims] (1)洗浄対象配管の両端にそれぞれ洗浄装置を連結し
、一方の洗浄装置内に滞留している洗浄流体を前記配管
の一端から流入し該配管の他端から流出させて該配管の
他端に連結した他方の洗浄装置に受けた後、再び前記洗
浄流体を前記配管内を通して送り返す工程を1回以上繰
り返して前記配管内を洗浄するようにしたことを特徴と
する配管の洗浄方法。
(1) A cleaning device is connected to both ends of the piping to be cleaned, and the cleaning fluid stagnant in one cleaning device flows in from one end of the piping and flows out from the other end of the piping. A method for cleaning piping, characterized in that the inside of the piping is cleaned by repeating the process of sending the cleaning fluid back through the piping once or more after the cleaning fluid is received by the other cleaning device connected to the piping.
(2)洗浄流体は洗浄剤または洗浄剤と粒子とからなる
流体である特許請求の範囲第1項記載の配管の洗浄方法
(2) The method for cleaning piping according to claim 1, wherein the cleaning fluid is a cleaning agent or a fluid consisting of a cleaning agent and particles.
(3)洗浄装置はスキッドまたはキャッチングローダで
ある特許請求の範囲第1項記載の配管の洗浄方法。
(3) The method for cleaning piping according to claim 1, wherein the cleaning device is a skid or a catching loader.
JP60275140A 1985-12-09 1985-12-09 Method of washing piping Pending JPS62136283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60275140A JPS62136283A (en) 1985-12-09 1985-12-09 Method of washing piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60275140A JPS62136283A (en) 1985-12-09 1985-12-09 Method of washing piping

Publications (1)

Publication Number Publication Date
JPS62136283A true JPS62136283A (en) 1987-06-19

Family

ID=17551245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60275140A Pending JPS62136283A (en) 1985-12-09 1985-12-09 Method of washing piping

Country Status (1)

Country Link
JP (1) JPS62136283A (en)

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