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摘要:控制係統時鐘同步是生產裝置停車原因分析的關鍵。以往各控制係統之間存在時間差,這給故障原因分析及工藝操作都帶來了嚴重不便。本文對控制係統時鐘同步功能的具體實現進行了相關闡述。
1引言
2015年的某一天,某化工廠PX裝置加熱爐F101A,F101B, F102, F103出現停爐事件。當時儀表人員分別檢查了DCS、ESD和壓縮機的SOE(事件順序記錄),發現此三套控制係統時間不一樣,相差達到8個多小時,這樣給儀表人員調查事故原因帶來了的不便,嚴重影響了處理事故的速度。
目前,隨著各個廠家控制係統不斷地更新換代,控制係統的操作站開始廣泛使用通用的臺式機電腦,而電腦時鐘走不準是出了名的,每天的誤差可達數秒,經過一段時間的累積就會出現較大的誤差。因此我們決定加大力度解決時鐘同步問題。
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