EP 1027584 A2 20000816 - ACOUSTIC LEAKAGE TESTING
Title (en)
ACOUSTIC LEAKAGE TESTING
Title (de)
AKUSTISCHE LECKPRÜFUNG
Title (fr)
ESSAI D'ETANCHEITE ACOUSTIQUE
Publication
Application
Priority
- GB 9803231 W 19981029
- GB 9722871 A 19971029
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
IPC 8 full level
G01M 3/24 (2006.01)
CPC (source: EP)
G01M 3/24 (2013.01)
Citation (search report)
See references of WO 9922214A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
GB 2331152 A 19990512; GB 9722871 D0 19971224; AU 9637198 A 19990517; EP 1027584 A2 20000816; WO 9922214 A2 19990506; WO 9922214 A3 19990902
DOCDB simple family (application)
GB 9722871 A 19971029; AU 9637198 A 19981029; EP 98950215 A 19981029; GB 9803231 W 19981029