TC reported wheel slip slide entering platform, around middle of platform. Fault recurred at NOV NB. ~~~~~ TC reported wheel slip slide entering pl     Check Tims observed FC-322 WSP timeout(1)multiple time.Depot shunting no W/S/S trigger.Further check Techo gen 1 found resistant fluating.C/O tacho gen no 1 ok.Dump v/v test ok.No sign of wheel flat.To be further monitoring and wheel diameter check ok. #3551 Techo Gen-#1: Old s/n: 87001 New s/n: 9429040 Not: 2301961 raise. Done by Koh. 05/08/21