Patent · US Expired

Method and equipment for detecting deflective nuclear fuel rods

US3945245A · kind A · utility

20Cited by

10References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Heinz Stehle · Marloffstein, DE
Helmut Assmann · Dormitz, DE
Peter Wahode · Neunkirchen, DE
Walter Janson

Key dates

Filing date	Mar 18, 1974
Grant date	Mar 23, 1976
Priority date	—
Expiry date	Mar 18, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E30/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Nuclear fuel rod ends of water-cooled reactor fuel rods, are heated in the region of the fission gas plenums and/or in the region of the upper or lower ends of the fuel columns. The moisture present in the case of damage to the fuel rods' casings, evaporates and is partly condensed at the end caps. In the case of a fuel rod completely filled with water, steam bubbles are generated. Both indications of casing leakage or damage are ascertained by ultrasonic reflection measurements and/or measurement of a temperature-vs-time curve, obtained at the end cap.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.