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Cost-Benefit Study of Excess Flow Valve Installation on Gas Service Lines – Notice of study availability and request for public comments

Cost-Benefit Study of Excess Flow Valve Installation on Gas Service Lines – Notice of study availability and request for public comments

As a result of its investigation into gas explosion and fire in the South Riding subdivision, Loudoun County, Virginia, the NTSB issued Recommendation P-01-2. It urges RSPA to require the installation of EFVs in all new and renewed services serving any type of customer: residential, commercial, or industrial. This includes installation of EFVs in new and renewed gas services operating at less than 10 psig, if appropriate EFVs are commercially available. OPS engaged Volpe to conduct a study that estimates the benefits and costs associated with implementation of NTSB Safety Recommendation P-01-2. This study examined whether the benefits resulting from mandatory installation of EFVs on all new and renewed gas distribution service lines would exceed the costs. The full study is available in Docket Number RSPA-03-14455 or on the OPS Web page at ops.dot.gov.

This notice seeks comments from the public on a cost-benefit study of mandatory installation of excess flow valves (EFVs) on all new and renewed gas distribution service lines. OPS invites comments on all aspects of the Volpe study, and in particular, would like comments on the following questions:

  1. Are the assumptions used in performing this study clear and correct?
  2. Is the data used in the study adequate to support the conclusions of the report?
  3. Are the uncertainties of this study clearly explained?
  4. Are the conclusions drawn from this study reasonable?
  5. Are the sensitivity analyses adequate?
  6. Are there other issues regarding EFVs and EFV installation not considered in the study?
  7. Are there regulatory or non-regulatory alternatives to mandatory EFV installation on new and renewed service lines that are as effective in reducing risks to the public?

Comments must be received by May 6, 2003 to ensure consideration. FOR FURTHER INFORMATION CONTACT: Marvin Fell, U.S. Department of Transportation (DOT), RSPA/OPS, 400 Seventh Street, SW, Washington, DC 20950, telephone (202) 366-6205, or by e-mail Marvin.fell@rspa.dot.gov.