NDLI: Innovative Method to Double Block and Bleed

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Dum, Frank Drysdale, Colin
Copyright Year	2010
Abstract	Double Block and Bleed (DBB) is the preferred approach used to maximize safety while performing piping maintenance. The aim of the paper is to outline an innovative method of achieving DBB on pressurized piping or pipelines. DBB is traditionally achieved by several methods, for example, through using Two Valves, a Valve & a STOPPLE® plugging head, a STOPPLE plugging head & an Isolation Plug or Tandem STOPPLE plugging heads. There are also several DBB methods which utilize inflatable bags or bladders. The STOPPLE Train is a patent pending tool that uses 2 STOPPLE® plugging heads. Only one hot tap is required in the piping for which the STOPPLE Train is inserted. The first STOPPLE plugging head is the trailing plugging head and forms a primary seal. The second STOPPLE plugging head is the leading plugging head and forms a secondary seal. Once sealed, the bleed is accomplished through a relief port allowing downstream maintenance to commence.
Sponsorship	International Petroleum Technology Institute and the Pipeline Division
Starting Page	379
Ending Page	382
Page Count	4
File Format	PDF
ISBN	9780791844229
DOI	10.1115/IPC2010-31346
e-ISBN	9780791838853
Volume Number	2010 8th International Pipeline Conference, Volume 3
Conference Proceedings	2010 8th International Pipeline Conference
Language	English
Publisher Date	2010-09-27
Publisher Place	Calgary, Alberta, Canada
Access Restriction	Subscribed
Subject Keyword	Trains Patents Pipelines Valves Maintenance Safety Pipes
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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