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Zerstörungsfreie Prüfungen bei Betrieb und Instandhaltung von Chemieanlagen
Author(s) -
Gräfen Hubert,
Steiger Klaus
Publication year - 1986
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330580902
Subject(s) - heat exchanger , corrosion , nuclear engineering , materials science , nondestructive testing , stress corrosion cracking , ultrasonic testing , metallurgy , mechanical engineering , engineering , ultrasonic sensor , medicine , physics , acoustics , radiology
Abstract Non‐destructive testing in operation and maintenance of chemical plant . Non‐destructive tests performed in chemical plant while it is in operation or standing idle are intended to give the plant operator the information on the state of the plant that is needed to ensure safety and availability. The scope of such tests and how often they are carried out depend on the condition of the plant and on the weaknesses that have been found in the course of time. The following are described as special examples of the versatile use of non‐destructive test methods: (a) thermographic and ultrasonic checking of the condition of a rotary furnace; (b) observation of spherical ammonia containers to ensure early recognition of cracking; (c) detection of leaks in high pressure plant items having corrosion resistant linings; (d) metallography of structural element subjected to heavy loads for long periods at elevated temperatures; (e) wall thickness measurement of heat exchanger tubes; (f) on‐site gamma radiation analysis of metallic materials with an portable RFA device.