Please explain if it is safe to do turp(transurethral resection prostate) operation the second time?

OK: No two turps are alike and no two urologists would perform TURP in the same way, largely depending upon surgeon's professional judgment, ethics, and skills so resulting in different outcomes. As a result, some are complication-prone with higher risk and redo rates, and others, less with a wide range in between. Largely, it's safe to redo turp. If in doubt, ask doc timely.