Title:
DETECTING METHOD OF DEFECTIVE PART IN HEAT INSULATION URETHAN TANK
Document Type and Number:
Japanese Patent JPS5371889
Kind Code:
A
Abstract:
Defective portions of a metallic tank storing hot hydrocarbon oil therein and having a thermally protective coating of polyurethane foam adhered onto the side wall thereof, are detected by determining a distribution of surface temperatures of the coating. Portions of the coating of relatively high temperatures correspond to defective portions of the coating which cause corrosion of the side wall of the tank, and in turn underlying corroded areas in the side wall.
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Inventors:
KAIHARA KOUJI
TANEOKA MASAO
KUSAKA TOSHIJI
TANEOKA MASAO
KUSAKA TOSHIJI
Application Number:
JP14714976A
Publication Date:
June 26, 1978
Filing Date:
December 09, 1976
Export Citation:
Assignee:
NIPPON OIL CO LTD
International Classes:
G01N25/18; B65D90/22; B65D90/48; F17C13/12; G01M3/00; G01N25/72; (IPC1-7): B65D87/32; G01N25/18