0

Full Content is available to subscribers

Subscribe/Learn More  >

Innovative Approach to Leak Detection Solves Several Problems for Plant Operators

[+] Author Affiliations
John Speranza

Proton Energy Systems, Inc., Wallingford, CT

Paper No. POWER2006-88029, pp. 153-159; 7 pages
doi:10.1115/POWER2006-88029
From:
  • ASME 2006 Power Conference
  • ASME 2006 Power Conference
  • Atlanta, Georgia, USA, May 2–4, 2006
  • Conference Sponsors: Power Division
  • ISBN: 0-7918-4205-3 | eISBN: 0-7918-3776-9
  • Copyright © 2006 by ASME

abstract

Power plants operating hydrogen cooled generators face a few challenges regarding the safe and reliable supply of hydrogen to their electric power generators. The mode of hydrogen supply differs from plant to plant depending on such things as distance from the central hydrogen supply or permit restrictions on the amount of stored hydrogen. There are number of plants that utilize single cylinders or transportable cradles of six, twelve, or eighteen cylinders. Others utilize large bulk systems that are either stationary high or low pressure tanks or transportable high pressure tube trailers. Subsequently the volume of hydrogen on a particular power plant site can vary from a couple hundred cubic feet to over a hundred thousand cubic feet. One of the chief safety concerns that many plant operators are faced with is the possibility that a major generator casing leak or facility piping leak occurs while a large volume of hydrogen is “lined up” to continuously feed hydrogen to the generator. The operator is faced with few options to mitigate this safety risk. One method used to mitigate this risk is to isolate the hydrogen supply and manually feed hydrogen into the generator when monitored closely by plant personnel. Other approaches include the implementation of mass flow meters to monitor the flow of hydrogen and alarm if a prescribed limit is exceeded and excess flow valves that are designed to limit the amount of hydrogen flow going through them. An alternate and innovative approach has been implemented at a handful of power plants recently utilizing a Proton Exchange Membrane (PEM) hydrogen generator. The generator not only makes the hydrogen needed to maintain pressure and purity within the generator casing, but also has the inherent ability to monitor demand and alert plant operators if a hydrogen leak occurs.

Copyright © 2006 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In