Hitachi Turbine Generator Technology for (日立涡轮发电机技术).pdf

Hitachi Turbine Generator Technology for (日立涡轮发电机技术).pdf

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Hitachi Turbine Generator Technology for (日立涡轮发电机技术)

Hitachi Turbine Generator Technology for Nuclear Applications Udo Zirn, P.E. Hitachi Power Systems America, Ltd. Motonari Haraguchi Hitachi Ltd., Japan Hitachi Power Systems America, Ltd 645 Martinsville Road, Basking Ridge, NJ 07920, Tel: 908-605-2800 Fax: 908-604-6211 www.hitachipowersystems.us Table of Contents 1. Nuclear Turbines vs. Fossil Turbines 3 1.1. Operating Conditions3 1.2. Design Challenges 4 2. Hitachi Nuclear Turbine Generator Experience 5 2.1. Hamaoka Unit # 5 Incident8 2.1.1 Outline of the Incident 8 2.1.2 Root Cause9 2.1.3 Damage Mechanism9 2.1.4 Improved Design10 3. Hitachi ABWR Steam Turbine Technology12 3.1 Hitachi Standard ABWR Turbine Specification12 3.2 ABWR Steam Cycle 13 3.3 Hitachi Research – Advanced ABWR Turbine Technology Features14 3.3.1 Long Last Stage Blades 15 3.3.2 Continuous Cover Blades (CCB)18 3.3.3 Other Advanced Technology Features and Upgrades 19 All rights reserved © Hitachi Power Systems America, Ltd., 2006 2 1. Nuclear Turbines vs. Fossil Turbines Hitachi has a long history providing steam turbine generators to both the nuclear and the fossil power industry. Many design features of steam turbines for nuclear power applications (herein referred to as “Nuclear Steam Turbines” or “Nuclear Turbines”) are based on e

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