定期的验证试验应使用书面程序显示未检测到的阻止SIS按照安全要求规格操作的故障。
Periodic proof tests shall be conducted using a written procedure to reveal undetected faults that prevent the SIS from operating in accordance with the safety requirements specification.
定期的验证试验应使用书面程序显示未检测到的阻止SIS按照安全要求规格操作的故障。
Periodic proof tests shall be conducted using a written procedure to reveal undetected faults that prevent the SIS from operating in accordance with the safety requirements specification.
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