JP2007218058A - Asbestos wetting method - Google Patents
Asbestos wetting method Download PDFInfo
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- JP2007218058A JP2007218058A JP2006069946A JP2006069946A JP2007218058A JP 2007218058 A JP2007218058 A JP 2007218058A JP 2006069946 A JP2006069946 A JP 2006069946A JP 2006069946 A JP2006069946 A JP 2006069946A JP 2007218058 A JP2007218058 A JP 2007218058A
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Abstract
Description
本発明は、アスベスト除去工程におけるアスベストの湿潤化作業に関するものである。 The present invention relates to an asbestos wetting operation in an asbestos removal step.
アスベストを除去する前に、アスベストの飛散を防止するとともに剥離を容易する目的で、アスベスト表面に湿潤剤を塗布、浸透させる湿潤化作業が行われる。
アスベスト層には吸水性があり、また市販されている湿潤剤は浸透性を高めるべくその表面張力を低くする等の対策を講じているものが多いため、アスベスト表面に塗布した湿潤剤はある程度まで浸透していく。 Since the asbestos layer has water absorbency and many of the commercially available wetting agents have taken measures such as lowering the surface tension in order to increase the permeability, the wetting agent applied to the asbestos surface is limited to some extent. It penetrates.
しかしながら、湿潤剤の浸透性に比べてアスベスト層の厚さが大きい場合は、深度の深い層まで完全に浸透しきれない。さらに重ねて塗布することを繰り返すことで、浸透深度を深くすることができるものの、限度があるとともに時間を要す。 However, if the thickness of the asbestos layer is larger than the permeability of the wetting agent, it cannot completely penetrate to a deep layer. Further, by repeating the coating, the penetration depth can be increased, but there is a limit and time is required.
湿潤剤が完全に浸透しない状態でアスベストの除去作業を行った場合、アスベストを剥離、除去するのに手間がかかる上に、アスベストが著しく飛散する。アスベストが飛散している環境において、作業者が防塵・防毒マスクを装着するとしても、作業者の健康面に配慮すれば長時間継続して作業することは好ましいものではなく、結果的に作業効率が悪いものとならざるを得ない。 When the asbestos removal operation is performed in a state where the wetting agent does not completely penetrate, it takes time to peel and remove asbestos, and asbestos is remarkably scattered. Even if the worker wears a dust / gas mask in an environment where asbestos is scattered, it is not preferable to work continuously for a long time if the health of the worker is taken into consideration. Must be bad.
本発明は従来技術のこのような課題を鑑み、湿潤剤をアスベスト層全体に浸透させ、作業性および安全性の高い湿潤化作業の方法を提供することを目的とする。 The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a method of moistening work with high workability and safety by allowing a wetting agent to penetrate the entire asbestos layer.
上記目的を達成するために、アスベストの湿潤化作業において、湿潤剤を表面に塗布する従来の方法に加えて、次のような措置を重ねて行う。 In order to achieve the above object, in the asbestos wetting operation, the following measures are repeated in addition to the conventional method of applying a wetting agent to the surface.
アスベスト層の最深部に湿潤剤を供給すべく、注射針もしくは細いパイプを湿潤剤の供給口とする供給装置を用いてアスベスト層の最深部まで差し込み、湿潤剤の注入を行う。 In order to supply the wetting agent to the deepest part of the asbestos layer, the wetting agent is injected by inserting it into the deepest part of the asbestos layer using a supply device using a syringe needle or a thin pipe as the supply port of the wetting agent.
注射針もしくは細いパイプを湿潤剤の供給口とする供給装置の仕様に関しては特に制限はなく、ピストンを利用した手動方式やポンプによる自動注入方式等が挙げられる。作業性を考えると、エアー等のポンプによる自動注入方式がよく、注射針もしくは細いパイプも1本ではなく複数本同時注入できるものが好ましい。 There are no particular restrictions on the specifications of the supply device using the injection needle or thin pipe as the wetting agent supply port, and examples include a manual method using a piston and an automatic injection method using a pump. In view of workability, an automatic injection method using a pump such as air is preferable, and a single injection needle or a thin pipe that can simultaneously inject a plurality of pipes is preferable.
注射針もしくはパイプの仕様は、人の力で容易にアスベスト層に突き刺すことができ湿潤剤を供給できればどのようなものでもいいが、材質に関しては強度、耐久性、コストの面で鋼、ステンレス等の金属が、外径については8mm以下が好ましい。 The specification of the injection needle or pipe can be anything as long as it can be easily pierced into the asbestos layer by human power and can supply wetting agent, but the material is steel, stainless steel, etc. in terms of strength, durability, and cost. The outer diameter is preferably 8 mm or less.
ここでパイプの場合、突き刺し易くするために、先端を斜めにカットするのが好ましい。さらに図2のように、パイプ1の先端部に円錐状のキャップ4を取り付け、パイプ先端付近の側面に供給口として穴3をいくつか設ける方法が、突き刺し易さおよび供給時の目詰まり防止の点でより好ましい。 Here, in the case of a pipe, in order to facilitate piercing, it is preferable to cut the tip at an angle. Further, as shown in FIG. 2, a method of attaching a conical cap 4 to the tip of the pipe 1 and providing several holes 3 as supply ports on the side surface near the tip of the pipe is easy to pierce and prevent clogging during supply. More preferable in terms.
またアスベスト層最深部の全面積に渡って供給するために、注射針もしくは細いパイプをアスベスト平面の縦および横方向(ここで、縦と横の方向は90°をなすもので、それぞれの方向には絶対性はなく任意に設定可能とする。)において、ある一定距離の間隔で差し込んで注入することが望ましい。その間隔の距離は注入量や湿潤剤の粘度および表面張力等で変わるものの、縦横共に20〜100mmで、縦と横がほぼ等しい距離が好ましい。 Also, in order to supply the entire area of the deepest part of the asbestos layer, a syringe needle or a thin pipe is inserted in the vertical and horizontal directions of the asbestos plane (where the vertical and horizontal directions form 90 °, Is not absolute and can be set arbitrarily.), It is desirable to inject by inserting at a certain distance. The distance of the interval varies depending on the injection amount, the viscosity of the wetting agent, the surface tension, and the like, but is preferably 20 to 100 mm in both length and width, and the distance is substantially equal in length and width.
アスベスト層の厚さが薄い場合は注射針もしくは細いパイプによる注入は不用であるが、厚さが10mm以上の場合は注射針もしくは細いパイプによる注入を実施した方がよい。 When the asbestos layer is thin, injection with an injection needle or a thin pipe is unnecessary, but when the thickness is 10 mm or more, it is better to perform injection with an injection needle or a thin pipe.
なお注射針もしくは細いパイプによる注入は、表面への塗布と重ねて実施する必要があるが、その順番については任意である。 The injection by the injection needle or the thin pipe needs to be carried out while being applied on the surface, but the order is arbitrary.
すなわち、本発明によるアスベストの湿潤方法は、湿潤剤を表面に塗布するとともに、注射針もしくは細いパイプを湿潤剤の供給口とする供給装置を用いて、注射針もしくは細いパイプをアスベスト層に差し込み、アスベスト層の奥に湿潤剤を注入することを第一の特徴としている。 That is, the asbestos wetting method according to the present invention is a method of applying a wetting agent to the surface, and using a feeding device having a syringe needle or a thin pipe as a wetting agent feed port, inserting the syringe needle or the thin pipe into the asbestos layer, The first feature is that a wetting agent is injected into the back of the asbestos layer.
また、当該方法は特に厚さ10mm以上のアスベスト層の除去作業を対象とすることを第二の特徴としている。 In addition, the method has a second feature that it is particularly intended to remove an asbestos layer having a thickness of 10 mm or more.
この方法によれば、アスベストの湿潤化作業においてアスベスト層全体が湿潤化されることから、アスベストの飛散が抑制される上にアスベスト層の剥離が容易となる。結果的に、作業性および安全性が向上する。 According to this method, since the entire asbestos layer is moistened in the asbestos wetting operation, scattering of the asbestos is suppressed and the asbestos layer can be easily peeled off. As a result, workability and safety are improved.
厚さ10mmのアスベスト層を除去するに際して、図1に示すような湿潤剤供給装置を用いて湿潤化作業を行った。この湿潤剤供給装置は、図1に示す通り、供給口であるパイプ1(外径:6mm、内径:2mm)が12本セット(40mm間隔で一列に設置)された噴出し部をエアレスガン2に組み付けた構造である。なお、パイプの先端は図2に示すような加工が施されている。この装置を使って、アスベスト面の縦横共に40mm間隔で湿潤剤(商品名:アスベスダンプ 製造元:エスケー化研株式会社)を最深部まで注入した。その後、同じ湿潤剤をアスベスト表面に通常のエアレス吹付機にて噴霧した。なお、比較のため、表面への噴霧のみでパイプによる最深部への注入を行っていない個所も用意した。 When removing the asbestos layer having a thickness of 10 mm, a wetting operation was performed using a wetting agent supply apparatus as shown in FIG. As shown in FIG. 1, this wetting agent supply apparatus has an airless gun 2 having an ejection portion in which 12 sets of pipes 1 (outer diameter: 6 mm, inner diameter: 2 mm) serving as supply ports are set in a row at intervals of 40 mm. It is an assembled structure. The tip of the pipe is processed as shown in FIG. Using this apparatus, a wetting agent (trade name: Asbestos Dump Manufacturer: SK Kaken Co., Ltd.) was injected to the deepest part at intervals of 40 mm both vertically and horizontally on the asbestos surface. Thereafter, the same wetting agent was sprayed on the asbestos surface with a normal airless sprayer. For comparison, a portion where only the spray on the surface was not injected into the deepest part by a pipe was prepared.
次に、ケレン棒を使ってアスベストの除去作業を行ったところ、パイプによる最深部への注入を実施した個所はアスベスト全体が完全に湿潤化されており、剥離し易くかつアスベスト粉塵の飛散は確認されなかった。一方、パイプによる最深部への注入を実施していない個所においては、アスベスト層の最深部付近が湿潤化されていなかったため、ケレン棒を奥まで入れるのに力を要すとともに、無理に剥離作業を行うとアスベスト粉塵の飛散が確認された。 Next, when the asbestos removal work was performed using a keren rod, it was confirmed that the asbestos dust was scattered easily and the asbestos dust was scattered at the place where the pipe was injected into the deepest part. Was not. On the other hand, in areas where the pipe was not injected into the deepest part, the vicinity of the deepest part of the asbestos layer was not wetted. Asbestos dust scattering was confirmed.
1 パイプ
2 エアレススプレーガン
3 穴
4 キャップ1 Pipe 2 Airless spray gun 3 Hole 4 Cap
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JP2006069946A JP2007218058A (en) | 2006-02-14 | 2006-02-14 | Asbestos wetting method |
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JP2006069946A JP2007218058A (en) | 2006-02-14 | 2006-02-14 | Asbestos wetting method |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010185182A (en) * | 2009-02-10 | 2010-08-26 | Shimizu Corp | Method for removing spraying material containing asbestos |
JP2011196169A (en) * | 2010-02-24 | 2011-10-06 | Shimizu Corp | Method for removing asbestos-containing material |
JP2012007306A (en) * | 2010-06-22 | 2012-01-12 | Shimizu Corp | Positioning member and removal method of asbestos-containing spray material |
JP2012012814A (en) * | 2010-06-30 | 2012-01-19 | Shimizu Corp | Method for removing asbestos-containing material |
JP2012017592A (en) * | 2010-07-07 | 2012-01-26 | Shimizu Corp | Method for feeding acid chemical liquid and method for removing asbestos-containing sprayed material thereby |
JP2012017607A (en) * | 2010-07-08 | 2012-01-26 | Shimizu Corp | Method for removing material containing asbestos |
JP2012117262A (en) * | 2010-11-30 | 2012-06-21 | Shimizu Corp | Method for removing spraying material containing asbestos |
-
2006
- 2006-02-14 JP JP2006069946A patent/JP2007218058A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010185182A (en) * | 2009-02-10 | 2010-08-26 | Shimizu Corp | Method for removing spraying material containing asbestos |
JP2011196169A (en) * | 2010-02-24 | 2011-10-06 | Shimizu Corp | Method for removing asbestos-containing material |
JP2012007306A (en) * | 2010-06-22 | 2012-01-12 | Shimizu Corp | Positioning member and removal method of asbestos-containing spray material |
JP2012012814A (en) * | 2010-06-30 | 2012-01-19 | Shimizu Corp | Method for removing asbestos-containing material |
JP2012017592A (en) * | 2010-07-07 | 2012-01-26 | Shimizu Corp | Method for feeding acid chemical liquid and method for removing asbestos-containing sprayed material thereby |
JP2012017607A (en) * | 2010-07-08 | 2012-01-26 | Shimizu Corp | Method for removing material containing asbestos |
JP2012117262A (en) * | 2010-11-30 | 2012-06-21 | Shimizu Corp | Method for removing spraying material containing asbestos |
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