Rashtriya Ispat Nigam Limited Director (Commercial) Prabir Raychaudhury will take over as in-charge Chairman-cum-Managing Director of the Visakhapatynam-headquartered company on June 1. The Ministry of Steel has named him as the in-charge CMD till further orders. The present incumbent, P. Madhusudan, retired on Thursday on reaching the age of superannuation. The Public Sector Enterprises Board has already recommended the name of Director (Operations) P.K. Rath as the next CMD.