JPH0418185B2 - - Google Patents
Info
- Publication number
- JPH0418185B2 JPH0418185B2 JP60159912A JP15991285A JPH0418185B2 JP H0418185 B2 JPH0418185 B2 JP H0418185B2 JP 60159912 A JP60159912 A JP 60159912A JP 15991285 A JP15991285 A JP 15991285A JP H0418185 B2 JPH0418185 B2 JP H0418185B2
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- construction
- corrosion cracking
- stress corrosion
- lpg
- 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 - Lifetime
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 238000005336 cracking Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/10—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for protection against corrosion, e.g. due to gaseous acid
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0128—Shape spherical or elliptical
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0607—Coatings
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0619—Single wall with two layers
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0648—Alloys or compositions of metals
-
- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
-
- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/225—Spraying
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/05—Improving chemical properties
- F17C2260/053—Reducing corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
［産業上の利用分野］
本発明は、ジンクリツチペイント塗布による貯
槽の腐食割れ防止方法に関する。
［従来の技術］
一般に湿性環境下で使用されたLPG、アンモ
ニア（NH3）などの貯槽に発生する応力腐食割
れは、設計荷重による引張応力、並びに、貯槽構
成用の鋼板（例えばHT60）の溶接歪に起因する
引張り残留応力の存在下で硫化水素（H2S）など
による化学的作用によるものとされている。
このため近年では、特に高張力鋼の場合には、
応力腐食割れに対する感受性は硬さに依存し、硬
さが増す程割れが発生しやすくなることは周知の
ことである。炭素量を低い値におさえ、溶接割れ
感受性を低くしたクラツクフリー鋼が開発されて
いるが、このクラツクフリー鋼は応力腐食割れに
も有効で、その施工手段としては、溶接時の入熱
管理、予後熱管理による溶接熱影響部の硬化止端
部の応力集中をグラインダー施工により処理する
ビードの整形、磁粉探傷検査などにより溶接個所
の割れや欠陥の有無の検査を行い、若し欠陥など
があればこれらの処理をすることが貯槽建設時に
行われている。
これにより現場では、従来に比べて応力腐食割
れの発生の頻度はきわめて少なくなつているが、
根絶するに至つていない。さらに、上記施工手段
の防止対策を強化するために、溶接個所の保護手
段が用いられることもある。
溶接個所の保護手段としては、溶接個所、およ
び、その近傍に亜鉛メタライジングを行う方法
や、ポリウレタン樹脂、エポキシ樹脂系の高級塗
料の厚膜塗装を施し、また、腐食環境からの剥離
が行われる。
［発明が解決しようとする課題］
上記保護手段には次のような問題点がある。
即ち、亜鉛メタライジングや高級塗料による厚
膜塗装は、施工費が嵩み、特に、タンク開放時に
おけるメンテナンス処置において、亜鉛メタライ
ジング剥離除去し、再びメタライジングするのに
多くの時間と施工費が嵩むことになり好ましくな
い。加えて、施工に容易性を欠きタンクの運転時
間に大きな影響を及ぼすなどの課題がある。
本発明の目的は、このような実情に対応すべく
なされたもので、簡単な而も合理的手段によつて
従来技術の問題点を解消せしめ、ジンクリツチペ
イントの塗布施工により溶接応力腐食割れの防止
が容易に行え、而も従来技術に比べて低コストな
防止方法を提供せんとするものである。
［課題を解決するための手段］
従来技術の課題を解決する本発明の構成は、湿
性環境下で使用されるLPG、アンモニアなどの
貯槽であつて、該貯槽の少なくとも溶接部、およ
び、溶接部近傍の内面領域を素地調整したのち、
該領域にジンクリツチペイントを塗布することを
特徴とするものである。
［実施例］
HT60鋼で建設されたLPG用の球形タンクの溶
液部、および、溶接部近傍の内側領域を想定した
試験片を用い、グラインダ、または、ブラスト
（エアーまたはインペラー）手段により素地調整
したのち、有機質、または、無機質のジンクリツ
チペイント（SDジンクプライマーZE No.1500…
…関西ペイント株式会社製）を刷毛塗りまたはス
プレー手段により膜厚20μｍ以上の塗装を施す。
［発明の効果］
本発明の構成によれば、次のような効果が得ら
れる。
(a) 従来技術の亜鉛メタライジングによる保護手
段と比較し、施工が容易であるため、特殊な技
能を要しないばかりでなく、施工費がきわめて
安価である。
(b) 建設時、および、開放検査時の両方に適用で
き、メンテナンス用として有効である。
(c) 亜鉛メタライジング手段に比べて塗膜剥離
（ブラスト手段などにより）が容易であり、こ
のため検査費が低廉である。
(d) 応力腐食割れ防止効果は次の試験結果から顕
著なものが得られた。
塗装有の供試材（本発明）は、SDジンクプラ
イマーZE No.1500（関西ペイント株式会社製）を
膜厚50μｍに塗装したものである。
[Industrial Application Field] The present invention relates to a method for preventing corrosion cracking of a storage tank by applying zinc-rich paint. [Prior art] Stress corrosion cracking that occurs in storage tanks for LPG, ammonia (NH 3 ), etc. that are generally used in humid environments is caused by tensile stress due to the design load and by welding of steel plates (e.g. HT60) for the storage tank construction. It is believed that this is caused by the chemical action of hydrogen sulfide (H 2 S) in the presence of tensile residual stress caused by strain. For this reason, in recent years, especially in the case of high-strength steel,
It is well known that susceptibility to stress corrosion cracking depends on hardness, and the higher the hardness, the more likely cracks will occur. A crack-free steel with a low carbon content and low weld cracking susceptibility has been developed. This crack-free steel is also effective against stress corrosion cracking, and its construction methods include heat input management during welding, The stress concentration at the hardened toe of the heat-affected zone of the weld due to management is treated with a grinder.The weld is inspected for cracks and defects by means of bead shaping, magnetic particle inspection, etc., and if any defects are found, these are removed. This treatment is carried out at the time of construction of the storage tank. As a result, stress corrosion cracking occurs much less frequently in the field than before.
It has not yet been eradicated. Furthermore, in order to strengthen the prevention measures of the above-mentioned construction methods, welding point protection means may be used. Measures to protect the welded area include applying zinc metallization to the welded area and its vicinity, applying a thick film of high-grade paint such as polyurethane resin or epoxy resin, and removing it from corrosive environments. . [Problems to be Solved by the Invention] The above protection measures have the following problems. In other words, zinc metallizing or thick film coating using high-grade paints increases construction costs, and in particular, it takes a lot of time and construction costs to remove peeling zinc metallization and re-metallize during maintenance procedures when the tank is opened. This is not desirable as it bulks up. In addition, there are other problems, such as the lack of ease of construction and the large impact on tank operating time. The purpose of the present invention has been made in response to these circumstances, and is to solve the problems of the prior art by simple and rational means, and to prevent weld stress corrosion cracking by applying zinc-rich paint. It is an object of the present invention to provide a prevention method that is easy to prevent and is less costly than conventional techniques. [Means for Solving the Problems] The structure of the present invention that solves the problems of the prior art is a storage tank for LPG, ammonia, etc. used in a humid environment, and at least a welded portion and a welded portion of the storage tank. After adjusting the surface of the nearby inner surface area,
The method is characterized in that a zinc-rich paint is applied to the area. [Example] Using a test piece assuming the solution part and the inner area near the welding part of a spherical tank for LPG constructed of HT60 steel, the surface was prepared by a grinder or blasting (air or impeller) means. Later, organic or inorganic zinc-rich paint (SD zinc primer ZE No. 1500...
...Kansai Paint Co., Ltd.) applied by brushing or spraying to a film thickness of 20 μm or more. [Effects of the Invention] According to the configuration of the present invention, the following effects can be obtained. (a) Compared to the conventional protective means using zinc metallization, construction is easier, and not only does it require no special skills, but the construction cost is extremely low. (b) It can be applied both during construction and during open inspection, and is effective for maintenance purposes. (c) It is easier to remove the coating (by blasting means, etc.) than with zinc metallizing means, and therefore inspection costs are low. (d) A remarkable effect on preventing stress corrosion cracking was obtained from the following test results. The coated test material (invention) was coated with SD Zinc Primer ZE No. 1500 (manufactured by Kansai Paint Co., Ltd.) to a film thickness of 50 μm.
【表】【table】
Claims (1)
などの貯槽であつて、該貯槽の少なくとも溶接
部、および、溶接部近傍の内面領域を素地調整し
たのち、該領域にジンクリツチペイントを塗布す
ることを特徴とする貯槽の応力腐食割れ防止方
法。1. For storage tanks for LPG, ammonia, etc. used in humid environments, after preparing the surface of at least the welded parts and the inner surface area near the welded parts, apply zinc-rich paint to the areas. Features a method for preventing stress corrosion cracking in storage tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159912A JPS6221000A (en) | 1985-07-18 | 1985-07-18 | Method of preventing stress corrosion cracking of storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159912A JPS6221000A (en) | 1985-07-18 | 1985-07-18 | Method of preventing stress corrosion cracking of storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6221000A JPS6221000A (en) | 1987-01-29 |
| JPH0418185B2 true JPH0418185B2 (en) | 1992-03-27 |
Family
ID=15703876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60159912A Granted JPS6221000A (en) | 1985-07-18 | 1985-07-18 | Method of preventing stress corrosion cracking of storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6221000A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150108628A (en) * | 2014-03-18 | 2015-09-30 | (주)우주일렉트로닉스 | Sim card socket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5939639A (en) * | 1982-08-30 | 1984-03-05 | Fujitsu Ltd | Paper feeding apparatus |
-
1985
- 1985-07-18 JP JP60159912A patent/JPS6221000A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5939639A (en) * | 1982-08-30 | 1984-03-05 | Fujitsu Ltd | Paper feeding apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150108628A (en) * | 2014-03-18 | 2015-09-30 | (주)우주일렉트로닉스 | Sim card socket |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6221000A (en) | 1987-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104312224B (en) | A kind of boats and ships derusting method | |
| CN104525458A (en) | Ship corrosion preventing method | |
| JP6252400B2 (en) | Repair base coating composition | |
| CN103041975A (en) | Rust prevention method of ship | |
| Seré et al. | The surface condition effect on adhesion and corrosion resistance of carbon steel/chlorinated rubber/artificial sea water systems | |
| JPH0418185B2 (en) | ||
| CA1265392A (en) | Zinc shot-blasting steel | |
| CN109078823A (en) | A kind of surface anti-corrosion treatment method for corroding steel and iron parts | |
| CN105413984B (en) | A kind of means of defence for improving ammonia water tank service life | |
| JPS6017589B2 (en) | Method for preventing stress corrosion cracking of steel products | |
| CN206110500U (en) | Waterproof anticorrosion coating structure for metal roofing is special | |
| Mathivanan et al. | Protection of steel structures in industries with epoxy‐silicone based coatings | |
| US663281A (en) | Process of painting metal surfaces. | |
| JP2746052B2 (en) | Surface treatment method for steel | |
| Klinge | Altered specifications for the protection of Norwegian steel bridges and offshore structures against corrosion | |
| JPS63265627A (en) | Surface coated steel material and its manufacture | |
| JP2008185118A (en) | Scuba diving steel high pressure container and its manufacturing method | |
| Ojaniittu | Corrosion of cruise vessel outfitting parts | |
| WO2018053946A1 (en) | Compressor and processing method therefor | |
| Young | Protective treatment: A fabricators viewpoint | |
| JPS6040476Y2 (en) | storage tank | |
| JPS63246598A (en) | Liquid ammonium storage tank | |
| KR20210055323A (en) | Method for painting fresh water tank of ship | |
| KR20210055245A (en) | Method for painting fresh water tank of ship | |
| Nishimura et al. | Surface Irregularity and Fatigue Strength of Mild and Weathering Steels Exposed in Corrosive Environment for Many Years |