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題名 | 核能電廠鈷基合金閥件之替代材料 |
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作者 | 王立華; 徐貴炎; | 書刊名 | 台電工程月刊 |
卷期 | 550 1994.06[民83.06] |
頁次 | 頁49-55 |
分類號 | 449.7 |
關鍵詞 | 硬面層; 滑移磨耗; 壓粘; 腐蝕/沖蝕; 可焊性; Hardfacing; Sliding wear; Galling; Erosion corrosion; Weldability; |
語文 | 中文(Chinese) |
中文摘要 | 為降低因鈷元素所造成之輻射曝露量,先進國家陸續發展了許多低鈷 (或不含鈷)合金作為鈷基合金之替代材料。為了進一步瞭解使用低鈷合金的適切 性,本論文著重介紹國外廠家及電廠使用低鈷合金的經驗,作為台電未來決策之 參考。 整理結果發現:各國均已有換用非鈷合金的經驗,但第一步均集中於更換燃料元 件,控制棒及爐心結構材料。在閥件硬面(Valve Harefacing)方面,美國因電力研 究院之推動,許多電廠均陸續有換鈷計劃,但大多採損壞才換的原則;其它各國 也有零星經驗,惟日本尚停留在研究階段。 |
英文摘要 | To reduce the radiation level contributed by the cobalt-based hardfac-ing materials in the valves, replacement with low cobalt (or non cobalt)based alloys is considered. This cobalt replacement program includescobalt-containing valve identification, cobalt quantity calculation,alternate material selection, spare parts' procurement and replacement.In order to evaluate the applicability and practicability of thisprogram, this project first reviews available research results andpast plant experience. The evaluation will assist Taipower in decidingwhether to adopt cobalt reduction program. In addition to the industrial survey, the work scope of thistwo-year project consists of the following items, 1. Identificationof cobalt containing valves which contribute cobalt release into reactorcore in the Chinshan plant, 2. Quantification of cobalt contribution fromall the above valves, 3. Comparison on the wear resistance of non-cobaltalloys with cobalt-based alloys in the simulated BWR environments. This report describes the results obtained in the first year. Asummary of this report is as follows. A United States industry survey of alternate materials for CoCr valveseat hardfacing application has been completed. Additionally, review ofEPRI reports, industry publications and efforts made by other utilitieswas also made. These informations concluded that, the nuclear industriesclearly understand the benefits of cobalt reduction in valves. However,it appears that valves and valve parts will only be replaced on a"degradation conditions" basis. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。