(19)
(11) EP 0 250 561 A1

(12)

(43) Date of publication:
07.01.1988 Bulletin 1988/01

(21) Application number: 87900570.0

(22) Date of filing: 15.12.1986
(51) International Patent Classification (IPC): 
G01M 3/ 40( . )
G01R 27/ 20( . )
(86) International application number:
PCT/US1986/002749
(87) International publication number:
WO 1987/003987 (02.07.1987 Gazette 1987/14)
(84) Designated Contracting States:
FR IT

(30) Priority: 17.12.1985 US 19850810022

(71) Applicant: SOUTHWEST RESEARCH INSTITUTE
San Antonio, TX 78284 (US)

(72) Inventors:
  • CONVERSE, Merle, Edward
    Helotes, TX 78023 (US)
  • PETERS, Wendell, Richard
    San Antonio, TX 78247 (US)
  • FOUNTAIN, Lewis, Spencer
    San Antonio, TX 78228 (US)

   


(54) METHOD AND APPARATUS FOR DETECTING AND LOCATING LEAKS IN GEOMEMBRANE LINERS