鐵路／大眾運輸業機電系統導入國產化設備／零件之可靠度分析及查證──以高運量電聯車為例

Reliability Analysis and Verification Approach for Locally-Manufactured Equipment/Components of Railway/Mass Rapid Transit Electrical and Mechanical System - A Case Study of High-Capacity Rolling Stock System

鐵路／捷運機電系統工程完工並交付營運單位後，即是進入歐盟標準EN50126-1所定義之第11階段「營運、維護，以及績效量測」；期間如遇備品取得不易、可靠度績效不如預期…等問題時，營運公司可依該標準導入較具優勢之國產化設備或零件。依前述標準，欲替換設備／零件（即變更設計），須先完成一系列之衝擊分析；藉由差異分析與衝擊分析新設備／零件可否取代既有項目、評估所屬系統、子系統，或次子系統之系統保證績效是否仍符合興建期所採用之規範，以及確認新設備／零件之安裝與測試並不會衝擊既有系統營運。本文將介紹新設備／零件之導入流程、詳述相關可靠度分析流程，並以捷運高運量電聯車之車門系統為例，描述導入替代零件之完整分析過程。

During ＂Operation, Maintenance, and Performance Monitoring＂ defined as the 11th Phase in EN50126-1, the completed and accepted Railway or Mass Rapid Transit Electrical and Mechanical System will be handed over to the Operation Authority. When facing equipment's / components' problems, such as costs, difficulty in procurement, unexpected reliability performance, etc., the aforesaid standard should be followed to adopt locally-manufactured and competitive parts. According to the standard, an ＂Impact Analysis＂ shall be performed prior to the planned replacement of the existing equipment / component, also called as design changes. Gap analysis and the impact analysis are to analyze the reliability and maintainability of new equipment / component, to assess whether the System Assurance requirements applied during design phase can be complied by the system / subsystem / sub-subsystem, and finally to ensure no impact will be brought to the Revenue Service during installation and tests of the new equipment / components. This paper is to describe, with flowcharts, how to introduce and to perform reliability-related analyses against new equipment / component by following EN50126-1. With a case study of the door system of the High-capacity MRT Rolling Stock, this paper is to describe the full replacement process for its components.