Global Patent Index - EP 1027584 A2

EP 1027584 A2 2000-08-16 - ACOUSTIC LEAKAGE TESTING

Title (en)

ACOUSTIC LEAKAGE TESTING

Title (de)

AKUSTISCHE LECKPRÜFUNG

Title (fr)

ESSAI D'ETANCHEITE ACOUSTIQUE

Publication

EP 1027584 A2 (EN)

Application

EP 98950215 A

Priority

  • GB 9803231 W
  • GB 9722871 A

Abstract (en)

[origin: GB2331152A] A method of detecting leakage passing along a leakage path 18 extending from a known external leakage point 14 through an internal lining 6 of a fluid storage tank 4, said method comprising: applying a pressure differential between an inner surface of said lining and an outer surface of said storage tank; moving acoustic transducing means (Fig.4 or Fig.5) over said external surface; and detecting, with said acoustic transducing means, acoustic signals characteristic of said leakage path during said movement to identify the course of said leakage path. In one embodiment (Fig.4), the transducing means comprises a pair of microphones (72, 74) spaced apart on a hand-held support (76). In another embodiment (Fig.5), the transducing means comprises a rigid rod (86) with a cavity (94) for conducting sound form the storage tank to a microphone (92).

IPC 1-7 (main, further and additional classification)

G01M 3/24

IPC 8 full level (invention and additional information)

G01M 3/24 (2006.01)

CPC (invention and additional information)

G01M 3/24 (2013.01)

Citation (search report)

See references of WO 9922214A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

GB 2331152 A 19990512; GB 9722871 D0 19971224; AU 9637198 A 19990517; EP 1027584 A2 20000816; WO 9922214 A2 19990506; WO 9922214 A3 19990902

INPADOC legal status


2002-05-29 [18W] WITHDRAWN

- Date of withdrawal: 20020329

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000526

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE