JP5345867B2 - 既設ガス配管の切り廻し工法 - Google Patents
既設ガス配管の切り廻し工法 Download PDFInfo
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- JP5345867B2 JP5345867B2 JP2009022575A JP2009022575A JP5345867B2 JP 5345867 B2 JP5345867 B2 JP 5345867B2 JP 2009022575 A JP2009022575 A JP 2009022575A JP 2009022575 A JP2009022575 A JP 2009022575A JP 5345867 B2 JP5345867 B2 JP 5345867B2
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- pipe
- gas
- cutting
- inert gas
- construction
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Description
11,12:遮断部材,13,14:接続部,15,16:耐熱管,
17,18:バルブ,19,20:延長ホース,21:操作部,
P:既設ガス配管,P0:端部,F:フランジ部,N:不活性ガス封止層,
L:設定距離
Claims (1)
- 工事区間の上流側で既設ガス配管のガス供給を遮断する工程と、
前記工事区間の両端で前記既設ガス配管を切断する工程と、
前記既設ガス配管の切断された端部から設定距離だけ奥まった管内に、管内の残留ガスを遮断する設定幅の不活性ガス封止層を形成する工程と、
該不活性ガス封止層での不活性ガス圧を設定圧に維持した状態で前記端部にフランジ部を溶接する工程と、
前記不活性ガス封止層を取り除いて、前記工事区間に対応した切り廻し配管の両フランジ端部を前記フランジ部にそれぞれ接続し、該接続後に前記切り廻し配管へのガス流通を開放することを特徴とする既設ガス配管の切り廻し工法。
Priority Applications (1)
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JP2009022575A JP5345867B2 (ja) | 2009-02-03 | 2009-02-03 | 既設ガス配管の切り廻し工法 |
Applications Claiming Priority (1)
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JP2009022575A JP5345867B2 (ja) | 2009-02-03 | 2009-02-03 | 既設ガス配管の切り廻し工法 |
Publications (2)
Publication Number | Publication Date |
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JP2010180907A JP2010180907A (ja) | 2010-08-19 |
JP5345867B2 true JP5345867B2 (ja) | 2013-11-20 |
Family
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Family Applications (1)
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JP2009022575A Active JP5345867B2 (ja) | 2009-02-03 | 2009-02-03 | 既設ガス配管の切り廻し工法 |
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JP (1) | JP5345867B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101662095B1 (ko) | 2011-11-04 | 2016-10-05 | 생-고뱅 퍼포먼스 플라스틱스 코포레이션 | 제거 가능한 샘플링 밸브를 갖는 배관 고정구용 시스템, 방법 및 장치 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5922394Y2 (ja) * | 1978-12-27 | 1984-07-04 | 東京瓦斯株式会社 | ガス管の漏洩修理機 |
JPS5673286A (en) * | 1979-11-17 | 1981-06-17 | Toho Gas Kk | Installing method of injectionless pipings |
JPS58109794A (ja) * | 1981-12-21 | 1983-06-30 | 西部瓦斯株式会社 | ガス供給用導管の切廻し工法 |
JPH0989185A (ja) * | 1995-09-29 | 1997-03-31 | Daiko Seimitsu Kk | 配管工事法 |
JPH1030749A (ja) * | 1996-07-17 | 1998-02-03 | Tokyo Gas Co Ltd | 内面に被覆層を有する既設ガス配管の溶接接続工事方法 |
JP3551284B2 (ja) * | 1996-08-28 | 2004-08-04 | 日立プラント建設株式会社 | 配管凍結工法 |
JPH10132189A (ja) * | 1996-10-28 | 1998-05-22 | Tokyo Gas Co Ltd | ガス供給管のノーブロー切断用治具及びガス供給管のノーブロー切断、結び工法 |
JP4478256B2 (ja) * | 1999-09-28 | 2010-06-09 | 京葉瓦斯株式会社 | 管路遮断用バッグ及び管路遮断工法 |
JP3794893B2 (ja) * | 2000-02-24 | 2006-07-12 | 東京瓦斯株式会社 | ガス火災消火システム |
JP2005220969A (ja) * | 2004-02-04 | 2005-08-18 | Nippon Steel Corp | 元整理用すみ肉キャップ |
JP4938479B2 (ja) * | 2007-02-01 | 2012-05-23 | 株式会社水道技術開発機構 | ガス配管のガス遮断方法 |
JP2008281042A (ja) * | 2007-05-09 | 2008-11-20 | Keiyo Gas Kk | 活管分岐遮断工法 |
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2009
- 2009-02-03 JP JP2009022575A patent/JP5345867B2/ja active Active
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JP2010180907A (ja) | 2010-08-19 |
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