Method of detecting and monitoring a leak caused by a through wa

Details Method of detecting and monitoring a leak caused by a through wa Method of detecting and monitoring a leak caused by a through wa

1977-09-06

1980-05-06

Engle, Samuel W.

Measuring and testing

Vibration

By mechanical waves

176 19LD, G21C 1700, G01N 924

Patent

active

042010926

ABSTRACT:
A method of detecting and monitoring leaks in the piping of a nuclear reactor senses the acoustic energy from the leak and analyzes its frequency spectrum versus acoustic amplitude. A choke flow condition will exist where the leak flows at sonic velocity; here the acoustic energy is directly proportional to the area of the crack producing the leak. This is utilized to provide an indication of crack enlargement.

REFERENCES:
patent: 3545262 (1970-12-01), Steele et al.
Trans Actions of 3rd International Conference on Structural Mechanics in Reactor Technology, vol. 3, part G London, 9/1-5/76, G 3/9 pp. 1-16 Sinclair et al.
G 3/8 pp. 1-14 Ingham et al.
G 3/7 pp. 1-14 Ingham et al. (II).
Machine Design, vol. 45 (6/14/73) pp. 132-137 Herzog.
S3045 0056 (5/9-11/72) Schofield pp. 76-82.
Technical Report DRC-71-2 (5/71) Harris et al. pp. 1-14.
ANS Transactions, 11/14-19/76 pp. 393-397.

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