Accession Number : AD0621911

Title :   REPAIRING THICK-WALLED HIGH-PRESSURE VESSELS BY ELECTRIC ARC WELDING,

Corporate Author : DIRECTORATE OF SCIENTIFIC INFORMATION SERVICES OTTAWA (ONTARIO)

Personal Author(s) : Farber,G. Kh. ; Nikitin,D. G.

Report Date : DEC 1964

Pagination or Media Count : 7

Abstract : A welding technique is described for weld build-up of damaged areas in thick-walled vessels and to restore reaction columns and heat exchangers. Three columns and a heat-exchanger were kept under observation during one operating year. The equipment worked at a pressure of 280-300 atmospheres and a temperature of 350-390C inside the reaction columns and 200-350C in the heatexchangers. According to the readings of surface thermocouples the temperature of the outer walls of the apparatus fluctuated within the limits 160-220C. Only in some units was there observed a local overheating to temperatures 250-300C. Visual examinations showed that no visible defects whatever had developed in the repaired areas on the vessel walls.

Descriptors :   (*ARC WELDING, PRESSURE VESSELS), (*PRESSURE VESSELS, ARC WELDING), (*STEEL, ARC WELDING), USSR, MAINTENANCE, THICKNESS, CHROMIUM ALLOYS, NICKEL ALLOYS, MOLYBDENUM ALLOYS, HEAT EXCHANGERS, WELDING RODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE