成果報告書詳細
管理番号20120000000392
タイトル*平成23年度中間年報 水素製造・輸送・貯蔵システム等技術開発 水素インフラ等に係る基準整備に関する研究開発
公開日2013/3/25
報告書年度2011 - 2011
委託先名高圧ガス保安協会
プロジェクト番号P08003
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
1.研究開発の内容及び成果等
本事業は、「水素インフラ等に係る基準整備に関する研究開発」として、水素ステーション用金属材料の鋼種拡大に関する研究開発、圧縮水素運送自動車用複合容器(CFRP)に係る基準整備に関する研究開発、水素ステーション用複合容器(CFRP)に係る基準整備に関する研究開発、圧力設備の設計基準における設計係数と水素適用に関する研究開発を行うことにより、既存規制の見直し等に資するデータ、高度な技術基準案を国内及び国際標準に提案するためのデータ取得並びにそれに係わる技術開発を実施し、水素社会におけるインフラ整備に資することを目的としている。具体的には、70MPa級水素ステーションを構成する配管、バルブなど各部品を製造する前提となる高圧水素ガス設備に使用可能な金属材料の鋼種拡大、高圧水素ガスの輸送・貯蔵を目的とした複合容器(CFRP)に係る技術基準
の整備を見据えた調査及び試験に加え、水素ステーションに用いる圧力設備のより合理的な設計を可能とすべく、圧力設備の設計基準における設計係数と水素適用に関する検討を行っている。
英文要約Development of Technologies for Hydrogen Production, Delivery and Storage Systems.
Development for Regulation of Hydrogen Infrastructure (FY2010-FY2012)
FY2011 Annual Report

I.Review of Materials which can be Added to Exemplified Standards for General High
 Pressure Gas Safety Regulations (Design Coefficient=4)
i) Review of Materials which can be Added to Exemplified Standards for General
High Pressure Gas Safety Regulations
We proposed that materials which can be added to Exemplified Standards for Gener
al High Pressure Gas Safety Regulations are considered based on the results of the S
SRT and the fatigue test, removing the results of the fatigue crack growth test from
consideration.

ii) Study regarding Discriminant Criteria Such as Acceptance Criteria
In reference to the studies in the presiding section, we proposed that materials whi
ch meet the following requirements shall pass the tests.
a) Materials whose tensile strength, proof stress, elongation and reduction of area
in hydrogen atmosphere are the same or more than those in the atmosphere wit
hin the limits of design pressure and design temperature
b) Materials whose 10^7 times fatigue strength in the atmosphere is more than tw
ice the value of the allowable tensile stress and are immune to hydrogen
In addition, as an acceptance criterion for a), we submitted that values of the tens
ile strength, proof stress, elongation and reduction of area obtained by the tensile tes
t or those in the mill sheet multiplied by the ratio of the value obtained by SSRT con
ducted in hydrogen atmosphere at the pressure higher than design pressure to the v
alue obtained by SSRT in an inactive gas atmosphere or in the atmosphere shall be t
he same or more than the value of standard. We also proposed that design temperat
ure limits shall be within the limits of temperature conditions in SSRT.

iii) Study regarding Materials Available at a Low Pressure Hydrogen Atmosphere
Also in a low pressure hydrogen atmosphere, we obtained data to suggest that hydr
ogen embrittlement occurs in austenitic stainless steel depending on composition con
ditions.

iv) Examinations of material properties (e.g., proof stress, tensile strength) necessary
for design
We suggested that standard values of materials are applicable to the design if such
materials meet minimum requirements stipulated in material standards in a hydrogen a
tmosphere.

II. Research and Development regarding Preparations of Standards for Composite Shi
pping Vessels
We provided advice and recommendations on draft documents for preparations of te
chnical standards regarding composite shipping vessels, which were prepared by the Jap
an Petroleum Energy Center (JPEC), our coauthor of the study.

III. Research and Development regarding Preparations of Standards for Composite Ves
sels Used in Hydrogen Fueling Stations
i) Evaluation Tests of Small Composite Vessels
We provided advice and recommendations on ambient temperature pressure cycling
tests and bursting tests, which had been conducted by JPEC.
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