Cel The objective of this project is to design a Flooded Member Detector whose characteristics are aimed at reducing as far as possible the cost of inspection campaigns on offshore jackets.The maintenance and control of these structures are relatively important part of the production costs. The design of this new instrument includes the following features :- Operation by non-NDT trained diver- Requires no umbilical connection to the surface- Automatic interpretation by a micro computer (no specialist being required for its use and interpretation).The different aims have been reached :- It can be used by non specialist divers, interpretation of the results is automatic by computer, stored in the detector and then transfered on the surface reporting microcomputer.- There is no umbilical connection to the surface offering a complete autonomy for the diver. Also clear and simple information by means of leds are offered to the diver : "measurement in progress", "flooding detected", "unvalid measurement", "battery discharged".- Positioning on members with magnets enabling members inspections from 8 to 60 inches diameter bracons.- Miniaturisation of the electronics (shape/weight optimisation) and low consumption components (for greater autonomy) has been achieved. All analog circuits, digital circuits, data storage, power supply, and microprocessor electronics have been integrated in a small light and easy to handle "ultra-sonic gun".- The surface equipment has been integrated in a portable briefcase containing the reporting microcomputer, a thermic printer, a battery charger, and the read-out cable.- The flooded member detector has been presented in Aberdeen (SCOTLAND) at Offshore Industry Show.- Up to now the interest of Oil and Diving Companies is not sufficient to engage industrialization of the prototype.The priorities for the project were to produce an instrument.This project has been conducted in order to respect the basic conceptswhich :- is simple to use- has no cable to the surface- requires no operator interpretation.The study has been separated into several phases :- ergonomy- measurement principle and laboratory testing- data storage- interpretation.The ergonomy has been studied in conjunction with divers in order to obtain a final product which is easy to handle underwater (submerged weight, shape, dimensions, etc.. ).The measurement principle is based on the detection of reflected ultra-sonic impulses by means of an analog circuit and a transducer (study of frequency, type of transducer, associated electronics).The data are compiled by a microprocessor and stored in RAM CMOS memories (electronics and shoft).They are read by a dedicated program on a microcomputer once the diver is back on surface (choice of microcomputer, soft, etc...). Program(-y) ENG-HYDROCARB 2C - Programme (EEC) of support for technological development in the hydrocarbons sector, 1986-1989 Temat(-y) 1.9 - PRODUCTION SYSTEMS Zaproszenie do składania wniosków Data not available System finansowania DEM - Demonstration contracts Koordynator Syminex SA Wkład UE Brak danych Adres 2 boulevard de l'Océan 13009 Marseille Francja Zobacz na mapie Koszt całkowity Brak danych
