Apparatus for passive removal of subsurface contaminants
Abstract
An apparatus is provided which passively removes contaminated gases from a subsurface. The apparatus includes a riser pipe extending into a subsurface which has an exterior end in fluid communication with a valve. When well pressure is greater than atmospheric pressure, the valve opens to release contaminants into the atmosphere, and when well pressure is less than atmospheric pressure, the valve closes to prevent flow of air into the well. The valve assembly of the invention comprises a lightweight ball which is lifted from its valve seat with a slight pressure drop between the well and the atmosphere. 7 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 512416
- Patent Number(s):
- 5641245
- Application Number:
- PAN: 8-446,372
- Assignee:
- Westinghouse Savannah River Co., Inc., Aiken, SC (United States)
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 24 Jun 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; REMEDIAL ACTION; DEGASSING; WELLS; VALVES; DESIGN; OPERATION; PRESSURE DEPENDENCE; IN-SITU PROCESSING
Citation Formats
Pemberton, B E, May, C P, and Rossabi, J. Apparatus for passive removal of subsurface contaminants. United States: N. p., 1997.
Web.
Pemberton, B E, May, C P, & Rossabi, J. Apparatus for passive removal of subsurface contaminants. United States.
Pemberton, B E, May, C P, and Rossabi, J. Tue .
"Apparatus for passive removal of subsurface contaminants". United States.
@article{osti_512416,
title = {Apparatus for passive removal of subsurface contaminants},
author = {Pemberton, B E and May, C P and Rossabi, J},
abstractNote = {An apparatus is provided which passively removes contaminated gases from a subsurface. The apparatus includes a riser pipe extending into a subsurface which has an exterior end in fluid communication with a valve. When well pressure is greater than atmospheric pressure, the valve opens to release contaminants into the atmosphere, and when well pressure is less than atmospheric pressure, the valve closes to prevent flow of air into the well. The valve assembly of the invention comprises a lightweight ball which is lifted from its valve seat with a slight pressure drop between the well and the atmosphere. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}
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