JP2551426B2 - Replacement method for bottom end plate of storage tank - Google Patents
Replacement method for bottom end plate of storage tankInfo
- Publication number
- JP2551426B2 JP2551426B2 JP62038012A JP3801287A JP2551426B2 JP 2551426 B2 JP2551426 B2 JP 2551426B2 JP 62038012 A JP62038012 A JP 62038012A JP 3801287 A JP3801287 A JP 3801287A JP 2551426 B2 JP2551426 B2 JP 2551426B2
- Authority
- JP
- Japan
- Prior art keywords
- jack
- bottom end
- end plate
- plate
- opening
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 238000003860 storage Methods 0.000 title claims description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/022—Land-based bulk storage containers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は平底円筒貯蔵タンクにおける腐食された底
端板の取替工法に関するものである。TECHNICAL FIELD The present invention relates to a method for replacing a corroded bottom end plate in a flat-bottomed cylindrical storage tank.
（従来の技術） 平底円筒貯蔵タンクにおける底端板、つまり側板と底
板との接合縁を含む底板外周部、いわゆるアニュラープ
レートは、従来から側板と底端板との接合縁を切離し、
側板および屋根全体を持上げ、底端板と側板を離した状
態で取替えるジャツキアップ工法により、新たな底端板
と取替えられていた。(Prior Art) A bottom end plate in a flat-bottomed cylindrical storage tank, that is, an outer peripheral portion of a bottom plate including a joint edge between side plates and a bottom plate, a so-called annular plate has conventionally separated a joint edge between a side plate and a bottom end plate,
It was replaced with a new bottom end plate by the jack-up method that lifts the side plate and the entire roof and replaces the bottom end plate with the side plate.
また部分的な底端板の取替えは、平底円筒貯蔵タンク
の側板下縁の一部を切取って、その部分の底端板を取替
える、いわゆるピース工法で行われてきた。Further, partial replacement of the bottom end plate has been performed by a so-called piece construction method in which a part of the lower edge of the side plate of the flat bottom cylindrical storage tank is cut off and the bottom end plate of that part is replaced.
また、いわゆるジャッキアップ工法とピース工法を組
合せた底端板の取替工法、例えば特開昭60−5970号のよ
うな技術も存在した。There has also been a method of replacing the bottom end plate by combining a so-called jack-up method and a piece method, for example, a technique as disclosed in JP-A-60-5970.
（発明が解決しようとする問題点） 従来例に示されるジャッキアップ工法では、側板およ
び屋根を含む全体を持上げるた、側板周面にジャッキ受
けのブラケットを多数溶接して取り付ける必要がある。
そのため当該ブラケットの取り付け、および取り外しに
より側板が損傷しやすく、その復旧及び検査に多くの時
間と労力を必要とする問題点がある。(Problems to be Solved by the Invention) In the jack-up construction method shown in the conventional example, it is necessary to weld and attach a large number of brackets for jacks to the peripheral surface of the side plate, which raises the entire side plate and roof.
Therefore, there is a problem that the side plate is easily damaged by attaching and detaching the bracket, and it takes a lot of time and labor for its restoration and inspection.
また、ブラケットを側板に取り付けることなく、側板
下部に開設した窓孔や開口部に特殊な爪付ジャッキを設
置して行う工法も考えられているが、曲げモーメントを
発生させることなく垂直に支持して上下することが難し
く、また、ブラケットに代わるジャッキ用爪の補助具や
ガイドピース及び側板荷重支持治具等を必要とするため
に、それらの取付部に損傷や変形等が生じる虞れがあ
り、その修復等も必要になるという問題点を内在してい
た。Also, a method of installing a special jack with a claw in the window hole or opening in the lower part of the side plate without attaching the bracket to the side plate is also considered, but it is supported vertically without generating a bending moment. Are difficult to move up and down, and since auxiliary tools for jack claws, guide pieces, side plate load supporting jigs, etc., which replace brackets, are required, there is a risk that their mounting parts may be damaged or deformed. However, there was an inherent problem that it would be necessary to repair it.
また、開口部の上辺を保護していないため、開口部上
辺にジャッキの押しキズが発生し易く、開口部切断面に
亀裂が発生し易かった。また、開口部上辺が補強されて
いないため、押し荷重を受けると変形し易かった。Further, since the upper side of the opening is not protected, the jack is likely to be scratched on the upper side of the opening, and cracks are easily generated on the cut surface of the opening. Moreover, since the upper side of the opening is not reinforced, it was easy to deform when subjected to a pressing load.
さらにまた、開口部は小さいため、ジャッキで持ち上
げる作業がし難いのみならず、復旧作業や試験時の検査
作業もし難い問題があった。Furthermore, since the opening is small, there is a problem that not only the work of lifting with a jack is difficult, but also the recovery work and the inspection work during the test are difficult.
また、ピース工法や特開昭60−5970号の技術にも同様
の問題点を包含している。さらに特開昭60−5970号の技
術では、側板と底端板の接合縁を開口して治具を取り付
け、楔効果で側板を持ち上げるため、側板と底端板との
隔接代が小さく、取替えようとする底端板の抜出し、挿
入が困難な問題点を有している。Also, the piece construction method and the technique of Japanese Patent Laid-Open No. 60-5970 include the same problems. Furthermore, in the technique of JP-A-60-5970, the jig is attached by opening the joint edge of the side plate and the bottom end plate, and the side plate is lifted by the wedge effect, so the separation margin between the side plate and the bottom end plate is small, There is a problem that it is difficult to pull out and insert the bottom end plate to be replaced.
（問題点を解決するための手段） この発明においては、取替えようとする底端板近傍の
側板を矩形形状に大きく開口し、当該矩形形状の開口縁
を損傷しないように保護しかつ変形しないように補強す
るために、当該開口部の上縁にジャッキ受台を当接して
固定し、ジャッキ受台に開口部内で直接ジャッキを当て
て側板を真下から無理なく持ち上げるよう形成し、底端
板の取替後に開口部に新たなる材料で形成した矩形形状
の側板を挿入して復旧し、上述の問題点を解決した貯蔵
タンク底端板の取替工法を提供することを目的とするも
のである。(Means for Solving the Problems) In the present invention, the side plate near the bottom end plate to be replaced is opened in a large rectangular shape, and the opening edge of the rectangular shape is protected so as not to be damaged and is not deformed. In order to reinforce, the jack pedestal is abutted and fixed to the upper edge of the opening, the jack pedestal is directly contacted with the jack in the opening, and the side plate is formed so as to be lifted up from directly below. It is an object of the present invention to provide a method for replacing a storage tank bottom end plate that solves the above problems by inserting a rectangular side plate formed of a new material into the opening after the replacement and restoring the same. .
すなわち、平底円筒状の貯蔵タンク底端板の取替工法
において、取替えようとする底端板の両側に、側板と他
の底端板との接合縁を下辺とし、当該下辺と平行する上
辺と、貯蔵タンクの軸心に平行な対向して隔接する両側
辺と、当該両側辺と上辺とを連接する弧状の湾曲辺で矩
形形状に側板を切り離して開口を設ける工程と、取替え
ようとする底端板と側板の接合縁および隣接する他の底
端板、並びに取替えようとする底板と底板を切り離す工
程と、内底面とその両側に直立する両側壁部とを有する
チャンネル状の受台本体と、当該受台本体の両側壁部に
固定押ボルトとを設けて形成したジャッキ受台を、上記
開口の上辺に上記受台本体の内底面を当接させ、開口を
上辺を含む側板を上記固定押ボルトを挾接して着脱自在
に固定する工程と、上記ジャッキ受台にジャッキを当接
して、上記開口内の側板直下の他の底端板上に当該ジャ
ッキを固定設置する工程と、上記開口内のジャッキで側
板を持ち上げ、取替えようとする底端板を取り出す工程
と、新たな底端板を挿入する工程と、開口内の側板を下
げ、側板と新たな底端板および隣接する他の底端板、並
びに新たな底端板と底板とを溶接する工程と、上記ジャ
ッキおよびジャッキ受台を取り外し、上記開口を新たな
る材料で形成した矩形形状の側板を挿入して復旧する工
程とを設けてなるものである。That is, in the replacement method of the flat bottom cylindrical storage tank bottom end plate, on both sides of the bottom end plate to be replaced, the joining edge between the side plate and another bottom end plate is the lower side, and the upper side parallel to the lower side. A step of separating the side plate into a rectangular shape with an arcuate curved side connecting the opposite side and the upper side, which are parallel to each other and parallel to the axis of the storage tank, and an opening, and a bottom to be replaced. A channel-shaped pedestal body having a joining edge of the end plate and the side plate and another adjacent bottom end plate, and a step of separating the bottom plate and the bottom plate to be replaced, and an inner bottom surface and both side wall portions standing upright on both sides thereof. A jack pedestal formed by providing fixing push bolts on both side wall portions of the cradle main body is brought into contact with the inner bottom surface of the cradle main body on the upper side of the opening, and the side plate including the upper side of the opening is fixed to the side plate. A step of contacting the push bolt and fixing it detachably, The step of abutting the jack on the jack pedestal and fixing and installing the jack on the other bottom end plate immediately below the side plate in the opening, and the bottom end of the jack in the opening to lift and replace the side plate. The step of taking out the plate, the step of inserting a new bottom end plate, the side plate in the opening is lowered, and the side plate and the new bottom end plate and other adjacent bottom end plates, as well as the new bottom end plate and the bottom plate. The steps of welding and the steps of removing the jack and the jack receiving base and inserting a rectangular side plate having the opening formed of a new material to restore the opening are provided.
（実施例） この発明を図示の実施例に基づいて詳細に説明する。
第１図はこの発明に係わる貯蔵タンクにおける底端板の
取替工法を説明するための一部を欠除した底端板部の斜
視図、第２図はジャッキ受台およびジャッキを取付説明
である。図中（１）は底板、（２）は他の底端板、
（３）は側板、（４）は取替えようとする底端板、
（５）が開口、（６）がジャッキ受台、（７）はジャッ
キである。(Example) This invention is demonstrated in detail based on the Example shown in figure.
FIG. 1 is a perspective view of a bottom end plate portion with a part omitted for explaining a method of replacing a bottom end plate in a storage tank according to the present invention, and FIG. 2 is an explanation of mounting a jack cradle and a jack. is there. In the figure, (1) is a bottom plate, (2) is another bottom end plate,
(3) is a side plate, (4) is a bottom end plate to be replaced,
(5) is an opening, (6) is a jack cradle, and (7) is a jack.
開口（５）は取替えようとする底端板（４）を挾んだ
両側の側板（３）に形成する。開口（５）は側板（３）
と他の底端板（２）および取替えようとする底端板
（４）との結合縁又は側板（３）と他の底端板（２）と
の接合縁、つまり溶接部を下辺としてガス切断もしくは
アークエアーガウジングにて切断し、高さ300乃至700ミ
リメートル程度の平行辺をガス切断して上辺とし、巾長
さ400乃至500ミリメートル程度の両側辺をガス切断して
大きな矩形形状に形成する。The opening (5) is formed in the side plates (3) on both sides of the bottom end plate (4) to be replaced. Opening (5) is side plate (3)
And another bottom end plate (2) and a bottom end plate (4) to be replaced or a joint edge between the side plate (3) and another bottom end plate (2), that is, a welding part as a lower side. Cut or cut with arc air gouging, gas-cut the parallel side with a height of about 300 to 700 mm as the upper side, and gas-cut both sides with a width of about 400 to 500 mm to form a large rectangular shape .
この場合両側辺と上辺は弧状の湾曲辺に形成し応力の
集中をさけるように形成する。また当該開口（５）は他
の溶接部の影響を受けない位置、つまり、側板（３）の
溶接部から隔接した位置に設けることが望ましい。In this case, both sides and the upper side are formed into arcuate curved sides so as to avoid stress concentration. Further, it is desirable that the opening (5) is provided at a position where it is not affected by other welded portions, that is, at a position separated from the welded portion of the side plate (3).
開口（５）は上辺にジャッキ受台（６）を取り付け
る。ジャッキ受台（６）は、第２図に示すように水平内
底面とその両側に直立する両側壁部とを有するチャンネ
ル状の受台本体（８）と当該受台本体（８）の両側壁部
に固定押ボルト（９）を設けて形成する。ジャッキ受台
（６）は受台本体（８）の内底面を開口（５）の上辺に
当接させ、開口（５）の上辺を含む側板（３）を固定用
押ボルト（９）で挾接して着脱自在に固定する。The jack pedestal (6) is attached to the upper side of the opening (5). As shown in FIG. 2, the jack cradle (6) is a channel-shaped cradle main body (8) having a horizontal inner bottom surface and both side wall portions standing upright on both sides thereof, and both side walls of the cradle main body (8). It is formed by providing a fixed push bolt (9) on the part. In the jack receiving base (6), the inner bottom surface of the receiving base main body (8) is brought into contact with the upper side of the opening (5), and the side plate (3) including the upper side of the opening (5) is sandwiched with a fixing push bolt (9). Securely attach and detach.
このジャッキ受台（６）は受台本体（８）の外底面に
ジャッキ（７）の頭端部を当接させ、他の底端板（２）
上に載置したジャッキ基台（10）上のジャッキ（７）の
本体で開口（５）に挾節する側板（３）を持ち上げるよ
うに形成する。ジャッキ（７）を設置した後、側板
（３）と取替えようとする底端板（４）と隣接する他の
底端板（２）、並びに底板（１）とをガス切断し、外方
に抜き出す。ジャッキ（７）で側板（３）を持上げ、抜
き出しやすいようにする。取替えようとする底端板
（４）を抜き出した後は切断縁をグラインダ等にて仕上
げて溶接開先を形成し、新たな底端板（40）を挿入す
る。新たな底端板（40）を挿入すると同時に持上げた側
板（３）を元の位置に下げ新たな底端板（40）と側板
（３）との開先縁、および新たな底端板（40）と他の底
端板（２）並びに新たな底端板（40）と底板（１）との
開先縁を溶接して復旧する。その後ジャッキ（７）およ
びジャッキ受台（６）を取り外して、新たな鋼板で開口
（５）を塞ぐ溶接片を形成し、溶接して復旧する。溶接
復旧後は、放射線透過試験、染色探傷試験、磁粉探傷試
験などを施工して溶接部の健全性を確認する。なお、開
口（５）は、バキュームテスター等の検査機器を開口
（５）内に挿入して、底板溶接部の健全性の確認試験を
行うのに利用することができる。In this jack receiving stand (6), the head end of the jack (7) is brought into contact with the outer bottom surface of the receiving stand main body (8), and another bottom end plate (2)
The main body of the jack (7) on the jack base (10) placed on the upper side is formed so as to lift the side plate (3) that slides into the opening (5). After the jack (7) is installed, the bottom plate (4) to be replaced with the side plate (3), another bottom plate (2) adjacent to the bottom plate (2), and the bottom plate (1) are gas-cut to the outside. Pull out. Use the jack (7) to lift the side plate (3) so that it can be pulled out easily. After the bottom end plate (4) to be replaced is extracted, the cutting edge is finished with a grinder or the like to form a welding groove, and a new bottom end plate (40) is inserted. At the same time when the new bottom end plate (40) is inserted, the lifted side plate (3) is lowered to its original position, and the groove edge between the new bottom end plate (40) and the side plate (3), and the new bottom end plate ( 40) and the other bottom end plate (2) and the groove edges of the new bottom end plate (40) and the bottom plate (1) are welded and restored. After that, the jack (7) and the jack receiving base (6) are removed, a welding piece for closing the opening (5) is formed with a new steel plate, and welding is performed to restore the welding piece. After welding is restored, a radiation transmission test, a dye flaw detection test, a magnetic particle flaw detection test, etc. will be performed to confirm the soundness of the weld. The opening (5) can be used to insert a test device such as a vacuum tester into the opening (5) and perform a soundness confirmation test of the bottom plate welded portion.
（効果） この発明によれば、ジャッキを取り付ける開口の上辺
がチャンネル状のジャッキ受台本体の内底面に平均に当
接し保護されているので、開口の上辺に押すキズや亀裂
が発生することがない。また、開口の上辺及び側板がチ
ャンネル状のジャッキ受台本体の内底面と両側壁部で挟
接し補強されているので、側板の荷重によって開口の上
辺及び側板が変形することがない。さらにまた、ジャッ
キ受台を固定押ボルトで側板開口に挟接して着脱自在に
固定するので、ジャッキ受台の固定押ボルトによる取付
け取外しの着脱作業が容易になる。(Effect) According to the present invention, since the upper side of the opening to which the jack is attached abuts against the inner bottom surface of the channel-shaped jack cradle main body evenly, scratches and cracks that push against the upper side of the opening may occur. Absent. Further, since the upper side and the side plate of the opening are sandwiched between and reinforced by the inner bottom surface of the channel-shaped jack receiving body and both side wall portions, the upper side and the side plate of the opening are not deformed by the load of the side plate. Furthermore, since the jack pedestal is clamped in the side plate opening by the fixing push bolt and is detachably fixed, the work of attaching and detaching the jack pedestal with the fixing push bolt becomes easy.
また、ジャッキを取り付ける開口を弧状の湾曲辺を有
する矩形形状に形成したので、ジャッキを開口内に容易
に挿入し取り付けられ、また底板の取替え溶接作業がし
易い。また、溶接部の健全性の確認試験時にバキューム
テスター等の大形の検査機器が開口内に入れられるため
検査がし易い。また、開口を比較的大きい板で溶接復旧
でき、かつ溶接線が接近しないため溶接や検査の作業が
し易く、さらにコーナー部に欠陥が生じることがない。Further, since the opening for mounting the jack is formed in a rectangular shape having arcuate curved sides, the jack can be easily inserted and mounted in the opening, and the replacement welding work of the bottom plate is easy. Moreover, since a large-sized inspection device such as a vacuum tester is put in the opening during the confirmation test of the soundness of the welded portion, the inspection is easy. In addition, since the opening can be restored with a relatively large plate and the welding line does not approach, welding and inspection work are easy, and no defect occurs in the corner portion.
また、ジャッキはジャッキ受台に当接し開口内の側板
直下の他の底端板上に設置し側板荷重の軸心を開口内で
垂直で支持しているので、荷重による曲げモーメントが
側板に働くことなく、曲げモーメントによる側板の変形
が生じない。また、ジャッキは荷重の軸心を垂直に支え
て、効率よく側板を上下することができる。In addition, the jack abuts the jack pedestal and is installed on the other bottom end plate immediately below the side plate in the opening, and the axis of the side plate load is vertically supported in the opening, so the bending moment due to the load acts on the side plate. In addition, the side plate is not deformed by the bending moment. Further, the jack vertically supports the axis of the load, and can efficiently move the side plate up and down.
また従来のように、側板にブラケット等の補助具やピ
ース治具等の取付溶接を行うことがないので、ブラケッ
ト等を取付溶接した跡がなく側板を損傷することがな
く、この取付溶接部の修復や検査等の作業も必要としな
い。さらにまた、爪の補助具を取付けた特殊なジャッキ
等の補助具やピース治具等の使用がないので、補助具や
ピース治具等の点検作業も必要としない。このように、
底端板の取替え作業が効率良く容易になる等の大きな利
点を有する。In addition, unlike the conventional method, the side plates are not welded with auxiliary tools such as brackets or piece jigs.Therefore, there is no trace of attachment welding of brackets or the like, and the side plates are not damaged. No work such as repair or inspection is required. Furthermore, since there is no need to use auxiliary tools such as a special jack or the like to which the auxiliary tools for nails are attached, or piece jigs, it is not necessary to inspect auxiliary tools or piece jigs. in this way,
It has a great advantage that replacement work of the bottom end plate can be efficiently and easily performed.
第１図は一部を欠除した底端板部の斜視図、第２図はジ
ャッキ受台部の取付け説明図である。 （１）……底板 （２）……他の底端板 （３）……側板 （４）……取替えようとする底端板 （40）……新たな底端板 （５）……開口 （６）……ジャッキ受台 （７）……ジャッキFIG. 1 is a perspective view of a bottom end plate portion with a part thereof omitted, and FIG. 2 is an explanatory view of attachment of a jack pedestal portion. (1) ... bottom plate (2) ... other bottom end plates (3) ... side plates (4) ... bottom end plate to be replaced (40) ... new bottom end plate (5) ... opening (6) …… Jack cradle (7) …… Jack
Claims (1)
において、取替えようとする底端板（４）の両側に、側
板（３）と他の底端板（２）との接合縁を下辺とし、当
該下辺と隔接して平行な上辺と、貯蔵タンクの軸心に平
行な対向して隔接する両側辺と、当該両側辺と上辺とを
連接する弧状の湾曲辺で矩形形状に側板（３）を切離し
て開口（５）を設ける工程と、内底面と両側に直立する
両側壁部とを有するチャンネル状の受台本体（８）と当
該受台本体（８）の両側壁部に固定押ボルト（９）を設
けて形成したジャッキ受台（６）を、上記開口（５）の
上辺に上記受台本体（８）の内底面を当接させ、開口
（５）の上辺を含む側板を上記固定押ボルト（９）で挾
接して着脱自在に固定する工程と、上記ジャッキ受台
（６）にジャッキ（７）を当接して、上記開口（５）内
の側板（３）直下の他の底端板（２）上に当該ジャッキ
（７）を固定設置する工程と、上記開口（５）内のジャ
ッキ（７）で側板（３）を上下方向に移動させ、新たな
底端板（40）に取替える工程と、上記ジャッキ（７）お
よびジャッキ受台（６）を取り外し、上記開口（５）に
新たな材料で形成した矩形形状の側板（３）を挿入して
復旧する工程とを設けてなることを特徴とする貯蔵タン
クの底端板の取替工法。1. A flat bottom cylindrical storage tank bottom end plate replacement method, wherein a side plate (3) and another bottom end plate (2) are joined to both sides of the bottom end plate (4) to be replaced. The edge is the lower side, and the upper side is parallel to the lower side and is parallel to the lower side, the opposite side is parallel to the axis of the storage tank, and the arc-shaped curved side that connects the both side and the upper side is formed into a rectangular shape. A channel-shaped pedestal body (8) having an inner bottom surface and both side walls standing upright on both sides, and a side wall portion of the pedestal body (8). The jack pedestal (6) formed by mounting the fixing push bolt (9) on the upper side of the opening (5) is brought into contact with the inner bottom surface of the pedestal body (8), and the upper side of the opening (5) is fixed. The step of fixing the side plate including the same with the fixing push bolt (9) so as to be detachable, and the jack (7) on the jack receiving base (6). And fixing the jack (7) on the other bottom end plate (2) immediately below the side plate (3) in the opening (5), and the jack (7) in the opening (5). ) To move the side plate (3) in the vertical direction and replace it with a new bottom end plate (40), and remove the jack (7) and the jack support (6), and insert a new material into the opening (5). And a step of inserting and restoring the rectangular side plate (3) formed in 1. to replace the bottom end plate of the storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62038012A JP2551426B2 (en) | 1987-02-23 | 1987-02-23 | Replacement method for bottom end plate of storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62038012A JP2551426B2 (en) | 1987-02-23 | 1987-02-23 | Replacement method for bottom end plate of storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63297899A JPS63297899A (en) | 1988-12-05 |
| JP2551426B2 true JP2551426B2 (en) | 1996-11-06 |
Family
ID=12513665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62038012A Expired - Fee Related JP2551426B2 (en) | 1987-02-23 | 1987-02-23 | Replacement method for bottom end plate of storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2551426B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6468970B2 (en) * | 2015-08-19 | 2019-02-13 | 新興プランテック株式会社 | Method for repairing existing tanks |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115287A (en) * | 1982-12-08 | 1984-07-03 | ト−ヨ−カネツ株式会社 | Method of replacing bottom end plate of storage tank |
| JPS60188576A (en) * | 1984-03-09 | 1985-09-26 | 新潟工事株式会社 | Annular plate of oil tank and bottom plate replacing method |
-
1987
- 1987-02-23 JP JP62038012A patent/JP2551426B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63297899A (en) | 1988-12-05 |
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