Tender For 1)anakapalli :replacement of panel interlocking with electronic interlocking along with replacement of outdoor signalling gears at anakapalle (akp) in connection with provision of additional loop line 2)gollaprolu: provision of signalling arrangements for additional loop line work along with alterations in existing electronic interlocking at gollaprolu (glp)station between vijayawada -vishakaptanam section of vijayawada division.