核能電廠主控制室的儀控系統使用先進具有觸控功能的顯示器為主要的人機介面，以提供運轉人員更多高度整合的資訊並可讓運轉員直接在螢幕上監視設備狀態及操控設備。因操作程序與介面系統複雜而帶來潛在的危險因子，直接影響運轉員判讀其中重要資訊之速度及正確性，若運轉員對數位儀控設備上呈現的訊息有漏失或誤判時，極有可能發生遺漏失誤或動作失誤，對於核能營運的安全影響甚鉅。因此本研究之目的是針對現行核電廠主控室的操作系統進行潛在人為失誤探討，並針對其進行改善。
首先，進行龍門核電廠現場訪談以了解目前操作介面對運轉員所造成的影響；其次，根據訪談結果與初步評估因子設計問卷，調查最重要潛在因子結果為介面訊息過於密集，文字太小不易閱讀。故我們運用兩種方法改善此潛在因子，其一為移動區塊名稱至第一個位置， 其二為不同區塊背景顏色對比，並透過模擬實驗，討論不同介面對於運轉作業的影響，用以衡量介面與運轉員績效的關係。受試者根據「抽棒控制操作程序書」判斷數值與搜尋元件進行作業。最後，分析受測者操作時間、搜尋時間及主觀判斷，衡量受測者績效與介面設計之關係。
這項研究的結果顯示不良介面設計因素為主控室操作系統最重要的潛在失誤。同時實驗結果顯示運用背景顏色對比在操作過程中，能最有效縮短元件搜索時間。此改進的介面有助於簡化介面訊息的密集與未來相關研究之考量。

The advanced main control room (MCR) in the nuclear power plant widely used touch function (panel) on visual display unit (VDUs) as mainly human-computer interface that provides operators highly integrated information to monitor and control system states directly on the screen. Because system complexity and potential error factor may affect the speed and accuracy of operators to read the important information on the screen, and that probably causes error, and may lead to a severe accident in the nuclear power plant. The research aimed to investigate the latent errors for improving operation performance by changing the configuration of information display format in the advanced MCR.
A questionnaire had been designed for important latent errors by preliminary assessment of MCR error factors and depth interviews with the operators in Lungmen nuclear power plant (NPP). The survey results showed that the intensive information display that was hard to read the text on the screen was the most important factor. Thus, we developed two strategies, 1) moving areas character to first character location, and 2) different color contrast of background areas in current interfaces, and conducted experiment based on depth interview, procedures studies, observations, and survey. And the hypothesis in this study was that the different interfaces significantly affect operation performance. In each level, participants had to follow the “control rod withdrawal criticality” procedures and deal with the events. Then, the optimal interface was suggested after analyzing operator`s performance and subjective evaluation.
The result of this study indicated that the poor design was the most important latent error in MCR. And the experiment result showed that the condition of modified background color with different color contrast in operation procedures was found the most effective and significant in shortening the component searching time. Moreover, this improved interface was necessary to simplify the intensive information and worth to be refereed for the future interface designers of related works.

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