JPS61155932A - Detection of gas leakage source - Google Patents

Detection of gas leakage source

Info

Publication number
JPS61155932A
JPS61155932A JP27871584A JP27871584A JPS61155932A JP S61155932 A JPS61155932 A JP S61155932A JP 27871584 A JP27871584 A JP 27871584A JP 27871584 A JP27871584 A JP 27871584A JP S61155932 A JPS61155932 A JP S61155932A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
concn
points
leakage source
gas
leakage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27871584A
Other versions
JPH0240967B2 (en )
Inventor
Katsutomo Hanakuma
Kenichi Moritomo
Hiromitsu Yamaguchi
Original Assignee
Idemitsu Petrochem Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material

Abstract

PURPOSE:To rapidly and accurately detect a leakage source, by specifying three points in order of higher concn. from gas concn. data at three or more points and estimating the leakage source from the relation between gas concns. at said points and the attenuation in gas concn. corresponding to the distance from the leakage source. CONSTITUTION:When wind velocity is 2m/s or less, three points P1, P2, P3 are specified in order of higher concn. from gas concn. data at three or more points and said concn. are set to C1, C2, C2. An imaginary leakage source Q1 is calculated on the line connecting the max. concn. point P1 and the point P2 according to X1:(L1-X1)=(CB2:CB1(wherein B is a concn. attenuation constant). In the same way, an imaginary leakage source Q2 is calculated on the line connecting the points P1, P3 and the intersecting point of a straight ling A, B crossing the straight line passing the leakage sources Q1, Q2 and connecting the points P1-P3 is estimated as a gad leakage source Q. When wind velocity is 2m/s or more, the position of the gas leakage source Q is estimated from the distance L of a max. concn. region A2 and a second concn. region A1, the concn. of the max. concn. region-C2 and the concn. of a third concn. region A3-C3 according to one of X:L=CB2:CB3 or X:(L+X)=CB2:CB3.
JP27871584A 1984-12-28 1984-12-28 Gasuroeigennokenchihoho Expired - Lifetime JPH0240967B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27871584A JPH0240967B2 (en) 1984-12-28 1984-12-28 Gasuroeigennokenchihoho

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27871584A JPH0240967B2 (en) 1984-12-28 1984-12-28 Gasuroeigennokenchihoho

Publications (2)

Publication Number Publication Date
JPS61155932A true true JPS61155932A (en) 1986-07-15
JPH0240967B2 JPH0240967B2 (en) 1990-09-14

Family

ID=17601179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27871584A Expired - Lifetime JPH0240967B2 (en) 1984-12-28 1984-12-28 Gasuroeigennokenchihoho

Country Status (1)

Country Link
JP (1) JPH0240967B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01219533A (en) * 1988-02-26 1989-09-01 Riken Keiki Kk Device for estimating gas leaking area
JPH0247527A (en) * 1988-08-09 1990-02-16 Jgc Corp Supposing method of leaking spot of gas
US9645039B1 (en) 2012-05-14 2017-05-09 Picarro, Inc. Survey area indicators for gas leak detection
US9823231B1 (en) * 2014-06-30 2017-11-21 Picarro, Inc. Systems and methods for assembling a collection of peaks characterizing a gas leak source and selecting representative peaks for display
US10126200B1 (en) 2012-12-22 2018-11-13 Picarro, Inc. Systems and methods for likelihood-based mapping of areas surveyed for gas leaks using mobile survey equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01219533A (en) * 1988-02-26 1989-09-01 Riken Keiki Kk Device for estimating gas leaking area
JPH0247527A (en) * 1988-08-09 1990-02-16 Jgc Corp Supposing method of leaking spot of gas
JP2687466B2 (en) * 1988-08-09 1997-12-08 日揮株式会社 How to estimate the leakage location of gas
US9645039B1 (en) 2012-05-14 2017-05-09 Picarro, Inc. Survey area indicators for gas leak detection
US9719879B1 (en) 2012-05-14 2017-08-01 Picarro, Inc. Gas detection systems and methods with search directions
US10126200B1 (en) 2012-12-22 2018-11-13 Picarro, Inc. Systems and methods for likelihood-based mapping of areas surveyed for gas leaks using mobile survey equipment
US9823231B1 (en) * 2014-06-30 2017-11-21 Picarro, Inc. Systems and methods for assembling a collection of peaks characterizing a gas leak source and selecting representative peaks for display

Also Published As

Publication number Publication date Type
JPH0240967B2 (en) 1990-09-14 grant

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