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Title: Replacement of LP-turbine rotors in nuclear power stations; Dresden and Quad Cities

Abstract

In the late 1970's, ultasonic analysis indentified several indications in the bore regions of nuclear low pressure turbine rotors of the shrunk-on wheel design. Though these early indications were not believed to be stress corrosion cracks, the manufacturers of these low pressure turbine rotors recommended routine in-service inspections as a precautionary measure. As a result of these in-service inspections, ultrasonic indications were identified in the bore and keyway regions of several LP rotors of this design. Included among these was Quad Cities, Unit 2, whose ultrasonic inspections revealed indications in several of the inner four wheels of each LP-flow. The authors report on how the shrunk-on LP-turbine rotors were replaced with an integral wheel design at the Quad Cities and Dresden power stations.

Authors:
 [1]; ;  [2]
  1. Commonwealth Edison Co., Chicago, IL (USA)
  2. Asea Brown Boveri Ltd., Baden (SW)
Publication Date:
OSTI Identifier:
7049206
Report Number(s):
CONF-880403-
Journal ID: ISSN 0097-2126; CODEN: PAPWA; TRN: 90-011716
Resource Type:
Conference
Journal Name:
Proceedings of the American Power Conference; (USA)
Additional Journal Information:
Journal Volume: 50; Conference: American power conference, Chicago, IL (USA), 18-20 Apr 1988; Journal ID: ISSN 0097-2126
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; NUCLEAR POWER PLANTS; ULTRASONIC TESTING; ROTORS; IN-SERVICE INSPECTION; CRACKS; DESIGN; REACTOR COMPONENTS; REACTOR MONITORING SYSTEMS; STRESS CORROSION; ACOUSTIC TESTING; CHEMICAL REACTIONS; CORROSION; INSPECTION; MATERIALS TESTING; NONDESTRUCTIVE TESTING; NUCLEAR FACILITIES; POWER PLANTS; TESTING; THERMAL POWER PLANTS; 220400* - Nuclear Reactor Technology- Control Systems; 220200 - Nuclear Reactor Technology- Components & Accessories

Citation Formats

Pizzica, J, Bertilsson, J E, and Thommen, E. Replacement of LP-turbine rotors in nuclear power stations; Dresden and Quad Cities. United States: N. p., 1988. Web.
Pizzica, J, Bertilsson, J E, & Thommen, E. Replacement of LP-turbine rotors in nuclear power stations; Dresden and Quad Cities. United States.
Pizzica, J, Bertilsson, J E, and Thommen, E. Fri . "Replacement of LP-turbine rotors in nuclear power stations; Dresden and Quad Cities". United States.
@article{osti_7049206,
title = {Replacement of LP-turbine rotors in nuclear power stations; Dresden and Quad Cities},
author = {Pizzica, J and Bertilsson, J E and Thommen, E},
abstractNote = {In the late 1970's, ultasonic analysis indentified several indications in the bore regions of nuclear low pressure turbine rotors of the shrunk-on wheel design. Though these early indications were not believed to be stress corrosion cracks, the manufacturers of these low pressure turbine rotors recommended routine in-service inspections as a precautionary measure. As a result of these in-service inspections, ultrasonic indications were identified in the bore and keyway regions of several LP rotors of this design. Included among these was Quad Cities, Unit 2, whose ultrasonic inspections revealed indications in several of the inner four wheels of each LP-flow. The authors report on how the shrunk-on LP-turbine rotors were replaced with an integral wheel design at the Quad Cities and Dresden power stations.},
doi = {},
url = {https://www.osti.gov/biblio/7049206}, journal = {Proceedings of the American Power Conference; (USA)},
issn = {0097-2126},
number = ,
volume = 50,
place = {United States},
year = {1988},
month = {1}
}

Conference:
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