Global Patent Index - EP 3006813 A1

EP 3006813 A1 20160413 - A METHOD OF PREPARING A SYSTEM FOR MAINTENANCE

Title (en)

A METHOD OF PREPARING A SYSTEM FOR MAINTENANCE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES SYSTEMS ZUR INSTANDHALTUNG

Title (fr)

PROCÉDÉ DE PRÉPARATION D'UN SYSTÈME DE MAINTENANCE

Publication

EP 3006813 A1 20160413 (EN)

Application

EP 15184966 A 20150912

Priority

NL 2013505 A 20140919

Abstract (en)

A method of preparing a system (100) for a maintenance operation, said system (100) comprising - a first subsystem (110) containing a super-atmospheric gas, - a second subsystem (120) connected with said first subsystem (110), and - a third subsystem (130) between the first and second subsystems; via intermediate subsystems (170a, 170b) comprising valve seats with a vent opening (246) in between. The intermediate subsystems are for example ball valves. To avoid gas escaping from the system (100), subatmospheric is applied to the vent openings (246) to discharge the gas and prevent it from leaking.

IPC 8 full level

F17D 1/04 (2006.01); F17C 7/00 (2006.01)

CPC (source: EP)

F17D 1/04 (2013.01); F17C 2205/0326 (2013.01); F17C 2205/0332 (2013.01); F17C 2205/0335 (2013.01); F17C 2205/0338 (2013.01); F17C 2205/0341 (2013.01); F17C 2221/013 (2013.01); F17C 2221/033 (2013.01); F17C 2221/035 (2013.01); F17C 2260/015 (2013.01)

Citation (applicant)

WO 2005026603 A1 20050324 - TOKYO GAS CO LTD [JP], et al

Citation (search report)

  • [A] US 2011133942 A1 20110609 - FLANDERS PATRICK S [SA]
  • [A] DALE MILLWARD: "Emergency pipeline repair systems developed to facilitate pipeline repair of unpiggable defects", 2012, XP002754559, Retrieved from the Internet <URL:http://ppsa-online.com/papers/12-Aberdeen/2012-07-STATS-Group-paper.pdf> [retrieved on 20160219]
  • [A] NATIONAL GAS STAR PARTNERS: "Using Pipeline Pump-Down Techniques To Lower Gas Line Pressure Before Maintenance", 2006, XP002754560, Retrieved from the Internet <URL:http://www3.epa.gov/gasstar/documents/ll_pipeline.pdf> [retrieved on 20160219]
  • [A] R PALMER JONES: "The development of an emergency repair system, and a case study for a remote gas pipeline", PROCEEDINGS OF THE 7TH INTERNATIONAL PIPELINE CONFERENCE IPC2008, 29 September 2008 (2008-09-29), Alberta, Canada, XP002754561, Retrieved from the Internet <URL:http://www.penspen.com/wp-content/uploads/2014/09/emergency-repair-system.pdf> [retrieved on 20160219]

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3006813 A1 20160413; EP 3006813 B1 20190220; ES 2725443 T3 20190924; HU E043340 T2 20190828; NL 2013505 B1 20160929; PL 3006813 T3 20190830; TR 201907036 T4 20190621

DOCDB simple family (application)

EP 15184966 A 20150912; ES 15184966 T 20150912; HU E15184966 A 20150912; NL 2013505 A 20140919; PL 15184966 T 20150912; TR 201907036 T 20150912