著者

藤井 秀樹 大宮 慎一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.47, no.2, pp.85-94, 2009-03-25 (Released:2009-04-27)

参考文献数

11

被引用文献数

2

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To accelerate the construction of hydrogen energy society featuring fuel cell vehicles by enlarging the kinds of materials safely used in hydrogen circumstances in addition to JIS SUS316L, several steels having Ni contents lower than SUS316L and Cr contents equivalent to SUS316L are prepared and their tensile properties in high pressure gaseous hydrogen are investigated at room temperature and -40°C. [Ni]+0. 35[Cr] ([Ni] and [Cr] are their concentrations in mass%) is proposed as an indicator to properly indicate whether hydrogen environmental embrittlement (HEE) occurs or not in45MPa hydrogen gas at both temperatures. HEE is basically related to strain-induced martensite having bcc crystallographic structure. However, there are some steels which do not exhibit any significant HEE although noticeable amount of martensite phase forms. In this case, HEE mainly occurs at the later stage of deformation just before fracture. Steels containing more than 12mass% Ni including SUS316L do not show HEE if there is not serious segregation of alloying elements such as Ni, Cr, Mo. It is also indicated that SUS316 probably do not show HEE if more than 12mass% Ni is contained. Furthermore, steels having Ni content close to 10mass%, which corresponds to the lower limit of the standard of JIS SUS316 and AISI 316L, have considerably higher resistance against HEE compared to SUS304 based steels although HEE occurs at the late stage of deformation. It may be possible for them to be used in high pressure hydrogen circumstances if temperature range at which they are used is fully taken into account and small level of HEE is acceptable.

著者

西原 正夫 井上 陽一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.22, no.1, pp.50-55, 1984-01-25 (Released:2010-08-05)

参考文献数

6

著者

和田 一育

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.36, no.4, pp.194-202, 1998-07-25 (Released:2010-08-05)

参考文献数

3

---

Japan Marine Science and Technology Center has been constructing for the development of the 11, 000m depth class ROV “KAIKO” system. The final sea trial of full depth diving carried out on March at Mariana Trench. The “KAIKO” went down to the 2m altitude from the bottom, and cruised the 10, 909m depth. But, the data communication link was interrupted. We thoroughly investigated the cause of the trouble by postponing the sea trial. We pinpointed the problem and were improved on the secondary cable. The sea trial were restarted in February 1995, and the “KAIKO” touched the bottom of the trench.

著者

石井 正則 沖 禎三郎

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.13, no.3, pp.150-158, 1975-05-25 (Released:2010-08-05)

参考文献数

6

著者

吉田 聖一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.49, no.5, pp.232-240, 2011-09-25 (Released:2012-09-25)

参考文献数

6

被引用文献数

13

著者

坂口 順一 国分 紀之

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.42, no.3, pp.121-129, 2004 (Released:2004-09-15)

参考文献数

8

被引用文献数

2

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Hydrogen energy system is one of the solutions for the global issue of greenhouse gases emission. The hydrogen supply chain system i. e. manufacturing, transportation and storage shall be discussed for the development of hydrogen Society. From this standpoint, thermal efficiency and CO2 emission of both hydrogen energy system and fossil energy system are evaluated in the “Well to Wheel” and “Well to Bus”.

著者

川野 浩二

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.54, no.3, pp.133-137, 2016-05-25 (Released:2016-06-21)

参考文献数

5

---

石油精製プラントは稼動後40年以上を経過するプラントが多くなり, 設備健全性維持の観点より, その時間依存性の劣化について検討する必要性が高まってきている。ここでは, 実際のプラントで長時間使用された材料 (SUS405) での経年劣化調査結果を紹介する。

著者

塩屋 繁松

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.13, no.1, pp.39-48, 1975-01-25 (Released:2010-08-05)

参考文献数

16

著者

吉田 聖一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.57, no.1, pp.13-23, 2019 (Released:2019-02-28)

参考文献数

10

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The current seismic design codes of aboveground oil storage tanks (ASTs) are conducted based on the beam-type vibration with circumferential wave numberm=1. The oval-type vibration withm≥2 in which shell plate vibrates in a petal shape due to local mass and stiffness, initial imperfection or nonlinear vibration occurs in ASTs. The initial stress due to hydrostatic pressure was reported to increase the natural frequency in highm range by several studies. The circumferential tensile stress on shell plates caused by hydrostatic pressure increases the stiffness and as a result the natural frequency is also increased. Wind girders are installed to the shell plates in ASTs for the prevention of buckling by wind pressure. The wind girder which is a ring stiffener increases the stiffness of the shell plate. In this paper, the natural frequency of the oval-type vibration in a large sized AST is analyzed and the effect of the wind girder on natural frequency is studied. The method is the free vibration analysis by axisymmetric finite element method considering coupled vibration of internal liquid and tank.

著者

石川 雄一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.36, no.6, pp.442-452, 1998-11-25 (Released:2010-08-05)

参考文献数

18

被引用文献数

1

著者

座間 信作 畑山 健 西 晴樹 山田 實

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.51, no.1, pp.4-10, 2013-01-25 (Released:2013-07-15)

参考文献数

3

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The 2011 off the Pacific coast of Tohoku Earthquake (Mw9. 0) occurred on 11 March2011 caused various damage to oil storage tanks in wide area. At Sakata, Niigata, Kashima and Tokyo Bay area, we found damage due to the liquid sloshing excited by the long-period ground motions such as sinking of floating roofs, failure of pontoons, deformation of gauge poles, leakage of oil onto the floating decks, and so on. Many strong motion records were obtained in and around tank sites and their velocity response spectra Sv in the long-period range hardly exceed the regulation in the Fire Service Law at all. Therefore, the floating roofs reinforced in compliance with the technical standard of the Fire Service Law revised in consideration of the damage in the 2003 Tokachi-oki earthquake suffered no severe damage. On the other hand, unreinforced floating roof of a tank located in the Tokyo Bay area sank after 3 days of the event because of the failure of pontoons by the liquid sloshing, although Sv near the tank is not more than 100cm⁄s in the previous regulation.

著者

藤井 秀樹

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.42, no.3, pp.154-161, 2004 (Released:2004-09-15)

参考文献数

5

---

Activities of Cryogenic Materials Working Group (Task 10) in the WE-NET program are introduced with emphasizing on mechanical properties of metallic structural materials used in liquid hydrogen and compressed gaseous hydrogen. Regarding the evaluation of properties in liquid hydrogen, mechanical tests were conducted mainly using the newly designed and installed facilities for mechanical testing in liquid hydrogen. Austenitic stainless steel plates of 5mm in thickness and their welds processed with TIG, MIG and FSW showed excellent mechanical properties at cryogenic temperatures, while the thicker weld metals processed with multi-layer deposition sometimes exhibited lower toughness in cryogenic circumstances. Regarding gaseous hydrogen, SUS304L showed clear hydrogen environmental embrittlement (HEE) even at room temperature, while SUS316L showed no HEE at room temperature although some ductility decrease was recognized at low temperatures. All kinds of steels tested, including plain steel, low-alloyed steels and stainless steels, exhibited considerable hydrogen absorption when the specimens were exposed at 54°C for 1000h in compressed hydrogen gas at 27MPa pressure. In case of stainless steels, plastic deformation at room temperature enhanced this tendency.

著者

岡本 博禎 田村 興造

出版者

HIGH PRESSURE INSTITUTE OF JAPN(HPI)

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.33, no.6, pp.296-305, 1995

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Hiroshima Gas Co., Ltd. made a decision to introduce LNG as raw material for city gas and has already started construction of the LNG receiving terminal in Hatsukaichi city, Hiroshima Pref. The costruction of this LNG terminal is now smoothly under way with the cooperation and guidance provided by the Ministry of International Trade and Industry, Japan Gas Association, etc.<br>The LNG storage tank of this terminal is the first In-pit type storage tank in Japan, which is a type of "aboveground LNG storage tank" installed in a reinforced-concrete pit built in the ground. This tank has exellent combined characteristics of the aboveground storage tank and the inground storage tank as described below:<br>·The maximum liquid level is below the ground surface.<br>·Appropriate space which exists between the pit and the tank enables control of the cold heat transferred from the storage tank.<br>·The storage tank is in good harmony with its surroundings.<br>This paper describes the overview of this LNG terminal and construction of the 85, 000kl LNG In-pit Storage Tank.

著者

吉田 聖一

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.47, no.6, pp.378-385, 2009-11-25 (Released:2011-01-24)

参考文献数

8

被引用文献数

2

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Two tank explosions simultaneously occurred at a salt water disposal facility in Lamesa, Texas on May 15, 2009. One tank launched as a skyrocket, and the roof plate separated and flew in the other tank at the explosion. The frangible roof joint is designed so that the strength of the sidewall-to-roof joint is weaker than that of the sidewall-to-bottom joint under overpressurization in aboveground oil storage tanks. This rule did not perform as intended in the tank which launched. This paper presents a consideration on the frangible roof joint design due to the tank explosion.

著者

RAHMAN S. M. MOSHIAR 名嘉 海人 真壁 朝敏

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.59, no.2, pp.52-60, 2021

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There is a good correlation between the <I>S</I>-<I>N</I> curve and crack growth law in carbon steel. Also, the fatigue limit of that can be evaluated from the param-eters of hardness and crack initiation conditions. The crack initiation behavior is related to the distribution of microstructures and the sizes of inclu-sions. Therefore, when the fatigue limit and life of carbon steel are predicted, it is better to consider the initial crack length and crack growth behavior. In this study, one such case was investigated by push-pull with constant stress amplitude by using 0.45% carbon steel. The initial crack lengths were varied with the specimen used and testing conditions. The prediction method of the <I>S</I>-<I>N</I> curve from a corrected crack growth law in such case was pro-posed. Also, a method of prediction of fatigue limit and life from the point of safety was discussed in this study.

著者

井上 威恭

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.15, no.2, pp.70-77, 1977-03-25 (Released:2010-08-05)

参考文献数

9

著者

早内 義隆 石倉 雅裕

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.42, no.3, pp.130-136, 2004 (Released:2004-09-15)

参考文献数

8

著者

永井 敏之

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.42, no.3, pp.106-114, 2004 (Released:2004-09-15)

参考文献数

4

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Demand for hydrogen is rapidly growing in the current environmental approach to meeting requirements of extremely low-sulfur and increasingly light fuels. The trend toward increase in hydrogen demand is expected to be accelerated with development and commercialization of fuel cell and synthesis fuel oil which are both attracting widespread attention as clean energy technologies. The steam reforming process, which has been used as the most popular industrial hydrogen production technology, is outlined here. The life cycle assessment, which rates net emissions of greenhouse gases from the steam reforming process, is also introduced. In addition, efficient methods for increasing the capacity of the steam reforming process are explained in the light of increasing calls in recent years for revamping hydrogen plants.

著者

大野 良三

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.12, no.3, pp.157-163, 1974-05-25 (Released:2010-08-05)

参考文献数

3

著者

ラーマン エス エム モシアール 真壁 朝敏 名嘉 海人 山内 章広

出版者

一般社団法人 日本高圧力技術協会

雑誌

圧力技術 (ISSN:03870154)

巻号頁・発行日

vol.58, no.4, pp.209-215, 2020

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There is a good correlation between the static strength and fatigue limit in many carbon steels. However, in the case of some commercially sold carbon steel, the fatigue limit cannot be evaluated from the static strength. Care should be taken when those materials are used for ma-chine equipment. In the case of some materials, there is decrease in fa-tigue limit from the expected values of Vickers hardness. In this study, one such case was investigated by push-pull. The examinations of the <I>S</I>-<I>N</I> curves and crack growth behavior were performed. Then, it was discussed that decrease in fatigue limit was related to the existence of inclusions or defects of unexpectedly large size. When such material as used in the present study is used for a machine equipment, the decrease of fatigue limit should be taken into account to determine an applied load.