ASME CODE SEC. XI 1983年版
IWV-3200 VALVE REPLACEMENT, REPAIR, AND MAINTENCE： WHEN A VALVE OR ITS CONTROL SYSTEM HAS BEEN REPLACED OR REPAIRED OR HAS UNDERGONE MAINTENCE THAT COULD AFFECT ITS PERFORMANCE, AND PRIOR TO THE TIME IT IS RETURNED TO SERVICE, IT SHALL BE TESTED TO DEMONSTRATE THAT THE PERFORMANCE PARAMETERS, WHICH COULD BE AFFECTED BY THE REPLACEMENT, REPAIR, OR MAINTENCE, ARE WITHIN ACCEPTABLE LIMITS.
*: EXAMPLES OF MAINTENCE THAT COULD AFFECT VALVE PERFORMANCE PARAMERS ARE: ADJUSTMENT OF STEM PACKING ; REMOVAL OF THE BONNENT, STEM ASSEMBLY, OR ACTUATOR; AND DISCONNECTION OF HYCRAULIC OR ELECTRICAL LINES.
