Performance demonstration of an ultrasonic nozzle inspection system: Part 1 -- Transducer development and flaw detection

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:72613

Gruber, G J ^[1]; Burger, S R; Mullins, L E ^[2]

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1. Southwest Research Inst., San Antonio, TX (United States)
2. Knolls Atomic Power Lab., Schenectady, NY (United States)

Two sets of automated system performance requirements were defined for the ultrasonic inspection of a vessel nozzle inner radius region from the cladded inside surface. Tables 1 and 2 of the companion paper list, respectively, the smallest flaws which had to be detected in the vessel wall, nozzle bore, and inner radius areas and the maximum errors allowed in estimating the distance to the flaw top (ligament Z{sub 1}), depth D, and length L of any detected flaw. This paper describes the multibeam transducer configurations developed to accomplish both sets of program objectives and presents the results of the manual and subsequent automated flaw detection trials. Both trials were conducted under blind test conditions. The automated inspection estimates for flaw ligament, depth, and length are presented against the actual/nominal dimensions as well as the manual inspection results in the companion paper (1).

• OSTI ID: 72613
• Report Number(s): CONF-931061--; ISBN 0-87170-506-0
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
AUTOMATION
EXPERIMENTAL DATA
IN-SERVICE INSPECTION
NOZZLES
NUCLEAR POWER PLANTS
PERFORMANCE
PRESSURE VESSELS
ULTRASONIC TESTING