As คขก.1 are working on RC 400, 650 and 670, so if there is any pigging operation on those pipelines please inform all managements in คขก.1. Also do risk assessment with คขก.1 team because คขก.1 open the pipeline ditch and the pig may cause large vibration in that pipeline section. And they may restrain that section or may reduce the risk by other proper means krab. Thanks.