14(1)/ae(e)-v/phewd/2026/48, dated: 13.10.2026

Replacement of the damaged portions of the existing faulty power cable of clariflocculator no. 2 with supply and laying of new 1.1kv grade 8 core 2.5 sq.mm xlpe insulated copper armoured cable along with some allied works at kalyani wtp.

Dehydration and filtration of transformer oil _including top-up with fresh oil_, and overhauling, servicing, cleaning and testing of 11kv ht vcb panel along with its protection relays at 4mg ugr cum bps near 13 no. tank under bmc

Preventive maintenance of eleven no dtw based pumping stations at different locations under diamond harbour municipal area for the period of 01 year.

Round the clock operation, guarding, cleaning including daily_ periodic maintenance etc. of the raw water pumping equipments for the raw water pumping station inside the premises of indian botanical garden under hmc area for the period of 3 years.

Round the clock operation, guarding, cleaning including daily_ periodic maintenance etc. of the booster pumping equipments for 4.94mg ugr cum booster pumping station at salkia under howrah municipal corporation area for the period of 3 years.

Overhauling of pump no 1 and 4 (model 24uph3 , q 3412 cum per hr , head 23 mtr, make kbl ) with supply and replacement of impeller shaft, bearings, sleeve, wear ring etc. and other necessary spares as required ... at rwps inside ibg under hmc area

High voltage hrc fuse of 125 amps, 1000 v ac, breaking capacity 80 ka, type nh1l as per rdso spec. no. rdso/pe/spec/ac/0184-2015 (rev-1) or latest and as per update of common bom items issued by rdso lr. no. el/7.1.108/mssbc, dated 17.09.2021 or latest, to siba cat. no. 2028003.125, eaton bussman cat. no. 125nh1lir-1000, eti cat. no. 4182495, efen, ferraz and siemens makes only acceptable. note: regular authorized dealers shall submit authorization letter from oems along with the offer.

Bracket fan 225 mm sweep, 110 v ac conforming to rdso specification no. is:6680-92 with annexure h (december2005) for rc fan issued by rdso vide lr. no. qe/6.5.1 dated 10.03.2006. the fan base, motor body and bracket shall conform to icf drg.no. icf/sk-7-6-179 with elegant, compact, lightweight aluminium body, anti-corrosive and frp blade. the fan shall have ball bearings at both the ends with skf/nbf ball bearing. the guard shall be crashworthy design to drg.no. icf/sk 7-6-158 col.ii alt. g.

Motor protection circuit breaker (mpcb) for compressor unit and heater unit, current rating 7-10 amp, thermal release range 10-16 amp, class-10, breaking capacity 10ka, 3-pole, voltage rating 415 v ac, conforming to is/iec 60947-2; conforming to rdso spec. no. rdso/pe/spec/ac/0184-2015 (rev. 1); suitable for use in switch board cabinet of lhb type ac coaches. accepted make & cat. /model no.: rdso-approved make and model as per serial no. 39 of rdso letter no. el/7.1.108/mssbc dated 17.09.2