corrigendum : supply of modified sander pipe arrangement for wap1/4 loco as per rdso drg no skel-4562 alt. 0 ref ; 1 to 13. (note:-item to ref. no 6,8,9,11&13 should be with nut m 14 instead of m 12 as indicated in drawin g). one set consists of 13 items 72 nos. [ warranty period: 30 months after the date of delivery ] ] bogie ac loco w/shop bsl,