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Titanium condenser tubes. Problems and their solution for wider application to large surface condensers. [PWR]

Journal Article:

Abstract

The corrosion resistance of titanium in sea water is extremely excellent, but titanium tubes are expensive, and the copper alloy tubes resistant in polluted sea water were developed, therefore they were not used practically. In 1970, ammonia attack was found on the copper alloy tubes in the air-cooled portion of condensers, and titanium tubes have been used as the countermeasure. As the result of the use, the galvanic attack on copper alloy tube plates with titanium tubes as cathode and the hydrogen absorption at titanium tube ends owing to excess electrolytic protection was observed, but the corrosion resistance of titanium tubes was perfect. These problems can be controlled by the application of proper electrolytic protection. The condensers with all titanium tubes adopted recently in USA are intended to realize perfectly no-leak condensers as the countermeasure to the corrosion in steam generators of PWR plants. Regarding large condensers of nowadays, three problems are pointed out, namely the vibration of condenser tubes, the method of joining tubes and tube plates, and the tubes of no coolant leak. These three problems in case of titanium tubes were studied, and the problem of the fouling of tubes was also examined. The intervals of supporting  More>>
Authors:
Sato, S; Sugiyama, S; Nagata, K; Nanba, K; Shimono, M [1] 
  1. Sumitomo Light Metal Industries Ltd., Tokyo (Japan)
Publication Date:
Jun 01, 1977
Product Type:
Journal Article
Reference Number:
AIX-09-398878; ERA-04-008010; EDB-79-011413
Resource Relation:
Journal Name: Karyoku Genshiryoku Hatsuden; (Japan); Journal Volume: 28:6
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; PWR TYPE REACTORS; STEAM CONDENSERS; CORROSION PROTECTION; BENDING; CORROSION; MECHANICAL VIBRATIONS; SECONDARY COOLANT CIRCUITS; TITANIUM; TUBES; VICKERS HARDNESS; WELDED JOINTS; WELDING; CHEMICAL REACTIONS; CONDENSERS; COOLING SYSTEMS; ELEMENTS; FABRICATION; JOINING; JOINTS; METALS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; TRANSITION ELEMENTS; VAPOR CONDENSERS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210200* - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled
OSTI ID:
6875367
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: KGHTA
Submitting Site:
INIS
Size:
Pages: 563-571
Announcement Date:
Sep 01, 1978

Journal Article:

Citation Formats

Sato, S, Sugiyama, S, Nagata, K, Nanba, K, and Shimono, M. Titanium condenser tubes. Problems and their solution for wider application to large surface condensers. [PWR]. Japan: N. p., 1977. Web.
Sato, S, Sugiyama, S, Nagata, K, Nanba, K, & Shimono, M. Titanium condenser tubes. Problems and their solution for wider application to large surface condensers. [PWR]. Japan.
Sato, S, Sugiyama, S, Nagata, K, Nanba, K, and Shimono, M. 1977. "Titanium condenser tubes. Problems and their solution for wider application to large surface condensers. [PWR]." Japan.
@misc{etde_6875367,
title = {Titanium condenser tubes. Problems and their solution for wider application to large surface condensers. [PWR]}
author = {Sato, S, Sugiyama, S, Nagata, K, Nanba, K, and Shimono, M}
abstractNote = {The corrosion resistance of titanium in sea water is extremely excellent, but titanium tubes are expensive, and the copper alloy tubes resistant in polluted sea water were developed, therefore they were not used practically. In 1970, ammonia attack was found on the copper alloy tubes in the air-cooled portion of condensers, and titanium tubes have been used as the countermeasure. As the result of the use, the galvanic attack on copper alloy tube plates with titanium tubes as cathode and the hydrogen absorption at titanium tube ends owing to excess electrolytic protection was observed, but the corrosion resistance of titanium tubes was perfect. These problems can be controlled by the application of proper electrolytic protection. The condensers with all titanium tubes adopted recently in USA are intended to realize perfectly no-leak condensers as the countermeasure to the corrosion in steam generators of PWR plants. Regarding large condensers of nowadays, three problems are pointed out, namely the vibration of condenser tubes, the method of joining tubes and tube plates, and the tubes of no coolant leak. These three problems in case of titanium tubes were studied, and the problem of the fouling of tubes was also examined. The intervals of supporting plates for titanium tubes should be narrowed. The joining of titanium tubes and titanium tube plates by welding is feasible and promising. The cleaning with sponge balls is effective to control fouling.}
journal = {Karyoku Genshiryoku Hatsuden; (Japan)}
volume = {28:6}
journal type = {AC}
place = {Japan}
year = {1977}
month = {Jun}
}