Accession Number : AD0765887

Title :   Nondestructive Testing for Durability Evaluation of Naval Boilers,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT PACIFIC VICTORIA (BRITISH COLUMBIA)

Personal Author(s) : Peters,B. F.

Report Date : 1972

Pagination or Media Count : 12

Abstract : Metallurgical analysis of wasted and failed marine boiler tubes has shown that numerous wastage mechanisms are operative: overheating and external oxidation, external corrosion, internal pitting corrosion, stress-corrosion cracking and corrosion-fatigue cracking. Those wastage mechanisms which are expected to result in failures can be and are being monitored by nondestructive testing; namely, immersion ultrasonic gaging, radiography, and visual inspection techniques. The nondestructive testing results are shown to give an accurate and reliable description of the wastage and this data can be used to determine boiler durability. Also, nondestructive testing data can be used to monitor selected tubes during specific trials and the results of such tests are reported. (Modified author abstract)

Descriptors :   (*BOILERS, NONDESTRUCTIVE TESTING), MARINE ENGINEERING, ULTRASONIC RADIATION, RADIOGRAPHY, CORROSION, STRESS CORROSION, OXIDATION, CANADA

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE