skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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.:
Westinghouse Savannah River Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
512416
Patent Number(s):
5,641,245
Application Number:
PAN: 8-446,372
Assignee:
Westinghouse Savannah River Co., Inc., Aiken, SC (United States) PTO; SCA: 540220; PA: EDB-97:113369; SN: 97001827933
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}
}