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1#scope of work and technical specifications: services for replacement of complete transformer oil & leak rectification of three re ctifier transformers at g station. the detailed scope of work is as follows: 1.#introduction & general requirement: a#the work sha ll e at the contractor workshop, shifting the transformer to /from the contractor#s workshop/g station, loading, unloading shall e under contractor scope. the required rigging tools such as slings, lifting hooks etc under contractor#s scope. dewa shall arrange f orklift & portale crane for the unloading & loading of transformers with a prior request. the offer for this shall e given as option -1. alternatively, the work can e carried out at site in the transformer ay itself. this shall e offered as option-2. #drain theoi l & store in the empty container for disposal. empty container /storage tank required for the jo shall e in contractor#s scope. c#i nject and maintain the nitrogen pressure so that winding is not exposed to atmospheric air. d#keep the tank & core coil assemly und er vacuum for 3 to 4 hours to remove any moisture. e#replacing all gaskets, o-rings etc. to arrest the leakages of transformers men tioned in the annexure-1. f#after the leak rectification, flush the transformer tank to remove the sludge#s & refill the transforme r tank with new oil. new oil will e supplied y dewa. g#after replacing the gasket & oil. the oil filtration shall e carried out til l dv reached greater than 60kv and moisture content is less than 5 ppm. h#attend any minor leakage along withreplacing oil rings. any other parts such as hv/lv ushings, ucholz relays etc found damaged during work shall e arranged and replaced with in the schedul e y the contractor on urgent asis after dewa approval. spares will e supplied y dewa. i#take oil sample to confirm the acceptale re sults. oil will e tested at dewa la. j#discuss the final report with dewa representative. k#after the successful completion of the jo, transformer shall e painted with non-corrosive paint. paint shall e provided y the contractor. l#the contractor shall provide systematic procedure for carrying out the aove jo along with the offer. m#the contractor shall provide their past references of car rying out similar jos. 3.#general conditions a#the prospective supplier may visit thesite to check the site conditions and the jo requirements. plant/site visit and correspondence shall e communicated y email to mr. jithesh assistant engineer em g jithesh.tho mas@dewa.gov.ae with copy to mr. mahmoud, sr. engineer-em, mahmoud.adella@dewa.gov.ae and mr. ramasuramanian t s, m-em g, ramasura manian@dewa.gov.ae. the contractor may contact with mr. mahmoud tele: 04-8044694, mo: 055-8906121, mr. jithesh tele: 04-8044783, mo 055-9871857. #all the tools, manpower, and materials required for the work shall e arranged y the contractor. the instruments, whi ch are required for this work, shall have valid caliration certificate. c#forklift & crane facility will e provide only for loadin g & unloading of materials with at least one day prior notice. d#contractor shallprovide the time schedule/ar chart indicating eac h activity on receipt of order. e#contractor shall aide y the safety and security rules/ regulations in- force at the power station s. f#disposal of used oils & any other y products of this jo shall e under contractor scope. g#work shall e carried out in a neat, orderly and safe manner. h#the permit to work shall e arranged y dewa. i#any other parts i.e. hv/lv ushings, found damaged during the work shall e arranged and replaced within the schedule y the contractor on urgent asis after dewa approval and same shall e rei mursed as an additional scope. j#unless specified, the contractor scope shall cover all the items required for completing the jo i n time with safe manner. k#any other partsi.e. hv/lv ushings, found damaged during the work shall e arranged and replaced within t he schedule y the contractor on urgent asis after dewa approval and same shall e reimursed as an additional scope. 4.#safety precau tions. a#the contractor at dewa work premises shall follow dewa safety and environment policy, rules and regulations during the con tract period. #the contractor shall carry out risk assessment for all works. this risk assessment shall e from safety as well as oc cupational health considerations. c#toolox talks shall e given to work men y their supervisor, copy of which shall e given to dewa. d#no welding, flame heating or cutting, grinding, pneumatic chipping etc shall e carried out without specific clearance from dewathrough #hot work permits#. the hot work permit if required shall e otained on daily asis. e#the contractor shall at no time keep i nflammale sustances in the plant /work areas. f#all hazardous wastages shall e moved under direction from and written approval to d ewa special storage area. g#the contractors work will fall within the preview of safety surveys conducted regularly y the dewa safe ty section. h#all the workers should wear necessary ppe required for the jo wherever as applicale. 5.#terms of payment: as per dewa terms and conditions 6.#warranty : a#one year guarantee shall e given for the material supplied & jo carried out y the contractor . #the guarantee will take effect from the date of takeover of the entire system. c#when a defect is noticed on the jocarried out during the period of warranty, the contractor must rectify the fault within a reasonale amount of time fixed y dewa with no claims or compensation. after replacement of the faulty part or rectification of the fault, warranty of the concerned part shall e restarte d for two years. 7.#penalty : as per dewa terms and conditions. annexure-1 slno.#kks#description & location#manufacture# 1#00lt11# 850kva, rectifier transformer electro chlorination plant# frem, italy# 2#00lt12#850kva, rectifier transformer electro chlorination pl ant# frem, italy# 3#00lt13#850kva, rectifier transformer electro chlorination plant# frem, italy# contact mr. jithesh assistant engin eer em g jithesh.thomas@dewa.gov.ae with copy to mr. mahmoud, sr. engineer-em, mahmoud.adella@dewa.gov.ae and mr. ramasuramanian t s, m-em g, ramasuramanian@dewa.gov.ae. the contractor may contact with mr. mahmoud tele: 04-8044694, mo: 055-8906121, mr. jithe sh tele: 04-8044783, mo 055-9871857

refilling of sf 6 gas in 8 kgs cylinder, 8l, 250 ar

repair & refurish the defective dc/dc converter unit with specifications; make: gutor, type: c 5774 - 14, sno. 0901-192802/140589 01/490113.1, in: 180-280vdc, out: 24 vdc/333a used in k2 desalination units with one year warranty minimum

motor details: type: 3057.180-0021, 1.5kw, 3 phase, 50hz, 400v, connection: star, 3.6a, rpm: 2865, make: flygt. rewinding/repairing of motor and assemling the complete pump set. all required measurements to e recorded after repair jo. any other activity seems nece ssary for the proper operation of the motor should e executed. detailed repair report to e sumitted after the repair work containing all recorded parameters. warranty of one year to e provided for the repair and rewinding work.contact mohamed salem: 04-32-27856/ 0 561485396

ora ss: rectification of pressure switch scope of work include rectification, reset and testing pressure switch on site. pressure s witch to e rectified and tested. cylinder to e refilled if required. qty: 1 no. cylinder model: ig 100 make: lpg, spain for site co ordination and ptw, contact eng. sherief 0529219010 other enquiries, contact eng. reem, 04-8892156, 050-2272767

supply & install hq nets nylon/polypropylene with supports completely to the satisfaction of dewa engineer. in addition, to cover the roof for protection of lamps, pipes situated and around sound system, ehind footall cages, dead zones which are inaccessile and also at places where ullets can reach. contact yasir 050 4611 230

shoring and dewatering works for 1200 mm dia pipe line works @ measiemexcavation up to 8.00m from gl total perimeter 24 m are inc ludes all required material, manpower, pump, diesel etc, complete

dewatering works for 1200 mm dia pipe line works @ al sofouh 5excavation up to 8.00m from gl total perimeter 24 m are includes

supply of overspeed controller; ft3100-e01 complete with 19 rack, make alstom, part no.: c1000510, jaquet part .no.377z-04908 - used for stg control system.motheroard shall e configured as per dewa requirement

envelope commissioning and air quality testing +g+m+4 as per the enclosed specification and drawings. for any query/site visit, p lease contact ms. aysha al remeithi on 04-3220993 or email: aysha.alremeithi@dewa.gov.ae payment terms as follows: advance payment: 20% preliminary assessment report/sumission of cx and air testing plan : 10% pe rform envelope commissioning: 30% perform air testing: 25% approval of final com missioning & air testing report: 15% perform uilding envelope systems tests air infiltrations test water ingress/penetration tes t exhaust re-entrainment test uilding performance test uilding envelope pressure uilding envelope air leakage