PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

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Characteristic curves: Characteristic and system curves for the pumps shall be supplied to a reasonably large scale which shall show the capacity of the pumps under single and multi pump operation at the duty point. When tested through their complete range of workable heads at the maker's works, all the pumps shall give results which conform to the curves submitted with the Tender. Curves showing pump efficiency and kW. loading shall also be included. Performance test: Each pump shall be tested at the manufacturer’s premises for the full operating range of the pump. Pump performance shall be within the tolerance limits specified in the relevant standards. The contractor shall furnish the guaranteed values of discharge and efficiency for the total head at duty point for each pump. Electric Motors. Supply Voltage and Characteristics for Motors: All unless otherwise specified, LT motors shall be squirrel cage motor and the motor shall be suitable for the following. Supply voltage : 415 Volts, 3 Phase, 50 Hz AC supply Voltage variation : 10% Frequency variation : 5% Combined variation of Voltage & Frequency : 10% All motors shall be foot / flange mounted squirrel cage induction type and shall be capable of developing at least 10% more power than demanded by the pump or driven equipment over its entire range of safe operation. Motors shall be continuous maximum rated as per IS:325 and IS:4722 (latest edition) and preferably be designed for low starting current and smooth acceleration except for cases where the driven equipment characteristic demand otherwise. Motors shall be of 4/6/8 pole design fitted with ball .roller bearings and provided with one or more terminal boxes large enough to accommodate armoured PVC insulated aluminium conductor of appropriate ratings. GTS : General Technical Specification. Page 154
Motor Winding: Motor winding shall be insulated with Class F insulation with temperature rise limited to Class B rating as per IS:325 and IS:4722 over an ambient temperature of 450C. The pull out torque of the motors at rated voltage and frequency shall preferably be 200% of FLT in each motor above 5.5 kW rating. Motors shall be suitable for star-delta/or Direct on Line starting. Starting Current for Heavy Motors: However, when LT motors are switched on, the starting current shall be limited to 400% of full load current for squirrel cage induction motors. All LT motors shall be squirrel cage type. Motor Protection: All motors shall be provided with protection to IP 55. For hazardous location, flame and explosion proof enclosures shall be provided. Appropriate water proof enclosures shall be provided to outdoor electric panels and starters, to provide sufficient protection from rains, dust, vermin etc. Degrees of protection provided by enclosures for rotating electrical machinery shall conform to the requirements of IS:4691. Flame proof motors where applicable shall comply with relevant specification of Mine safety requirements and other applicable specifications for this type motors including IS:5571. Motor Testing : Testing of motors shall comply with the requirements of IS:4029. Dimensions of foot mounted motors shall comply with the requirements of IS:1231. Generated values of efficiency and power factor at full load and 3/4 load shall be furnished by the <strong>Bid</strong>der. GTS : General Technical Specification. Page 155
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Government of Meghalaya Public Heal
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1.1 Materials. Chapter 1 General Te
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IS: 1786 - 1985 Specification for h
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IS: 1500 - 2005 Methods for brinell
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Cement bags brought to the site mus
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Laying : The cement, sand and stone
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1.6 Reinforced Cement Concrete. All
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Expansion joints. Expansion joints
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1.16 Conservation water. Special Co
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oads, protection to existing underg
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the relevant standards and codes in
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1.33 Demolition. Before commencing
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Motors, gearing, transmission, elec
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Construction Camps :The Contractor
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2.1 Description. Chapter 2 Submitta
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3.1 Clearing site. Chapter 3 Site p
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Chapter 4 Dismantling 4.1 Dismantli
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5.1 Description. Chapter 5 Earth Wo
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The trench shall be so dug that the
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5.12 Excavation for appurtenance. E
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5.16 Caution cum information boards
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f) Before and during the backfillin
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6.1 Brick work. Masonry Mortars: Pr
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6.4 Scaffolding. Scaffolding shall
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Half or cut bricks shall not be use
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7.1 Concrete. General: Chapter : 7
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) Gradation: (I) Unless otherwise d
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Dropping of concrete from an excess
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Cement: Cement shall, whether suppl
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Coarse aggregate shall be piled in
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Grades of concrete: The concrete sh
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Uniformity of mix: Concrete shall b
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Vibration: Vibrators shall be inser
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Jointing: The face of a constructio
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8.1 Material. Chapter 8 Form Work A
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8.3 Removal of Forms and Shoring. F
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9.1 General. Chapter : 9 Reinforcem
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9.6 Dowels. Where and as designated
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(viii) Increased cover thickness sh
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10.1 Definitions. Chapter : 10 Plas
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The fine aggregate for cement morta
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Roughness: Smooth surfaces of in-si
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In suspending the work at the end o
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11.1 Transportation. Chapter - 11 L
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At the end of each day, the end of
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Where joints are left uncovered unt
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11.9 Flanged joints. Flanged joint
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A. Sluice valves 12.1 General. Chap
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12.6 Lubrication. All the points wh
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13.1 Fixing of Sluice Valves. Gener
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Preparation: The air valves and the
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14.1 Pressure gauges Material: Chap
Page 105 and 106: Chapter - 15 Electrical Works and P
Page 107 and 108: 7. The bidder should enclose along
Page 109 and 110: 15.9 Approval by fire insurance aut
Page 111 and 112: All spare contacts and terminal of
Page 113 and 114: Painting: The panels shall undergo
Page 115 and 116: Auto Transformer Starters : The aut
Page 117 and 118: Contactors: The three pole contacto
Page 119 and 120: While removing the cable from the d
Page 121 and 122: Testing of Cables: Once the cable i
Page 123 and 124: Point Wiring: Point wiring shall in
Page 125 and 126: Control at point of entry supply: T
Page 127 and 128: A conductor shall be carried in an
Page 129 and 130: 5 Amps and 15 Amps socket outlet sh
Page 131 and 132: All outlets such as switches, wall
Page 133 and 134: Outdoor Luminaire: The luminaire sh
Page 135 and 136: All earth wires and earth continuit
Page 137 and 138: The capacitor bank may comprise of
Page 139 and 140: 15.22 Pumping Machineries. Applicab
Page 141 and 142: Iron and steel are in general to be
Page 143 and 144: Workmanship: Workmanship and genera
Page 145 and 146: On removal from the galvanising bat
Page 147 and 148: They shall be efficiently lubricate
Page 149 and 150: Codes and standards: The design, ma
Page 151 and 152: The design of bearing should be suc
Page 153 and 154: Base plate: The common base plate f
Page 155: The commissioning tests shall be pe
Page 159 and 160: Chapter - 16 Technical specificatio
Page 161 and 162: vii) This region has experienced a
Page 163 and 164: 16.7 The reduced level at different
Page 165 and 166: Chapter 17 Technical specification
Page 167 and 168: Chapter 18 Technical Specification
Page 169 and 170: (b) Pits for joints : When welding
Page 171 and 172: All excavated materials shall be th
Page 173 and 174: Supply of paints with approved qual
Page 175 and 176: shall be lowered into the trench by
Page 177 and 178: 2. Protective devices, such as reli
Page 179 and 180: Education of crew members as to the
Page 181 and 182: The anchors provided at the mid-poi
Page 183 and 184: Chapter 19 Technical specification
Page 185 and 186: including laying of the Rising Main
Page 187 and 188: The pumps shall be of non pull out
Page 189 and 190: 5. a) Centre to centre spacing (bet
Page 191 and 192: The pump TBH shall be calculated by
Page 193 and 194: Bidder for solo and parallel operat
Page 195 and 196: i) Seal ring/ earing ring : Materia
Page 197 and 198: 4. Detail Particulars : The technic
Page 199 and 200: The Bidder shall furnish with the o
Page 201 and 202: 19.14 Starters : In selection of st
Page 203 and 204: Pressure gauge (IS 3624): The deliv
Page 205 and 206: Bidder shall be provided with one p
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19.23 Valves & Specials for Pump in
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19.30 Equipment transfer trolley. O
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Each installation shall include the
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Fixtures shall be fully wired up to
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Exhaust Fan: For ensuring open vent
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Miscellaneous electrical safety dev
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For long run, junction/pull boxes s
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Foundation & Civil Works : Equipmen
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e) Exhaust fan: For ensuring open v
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Chapter 20 Technical specification
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It is the responsibility of Bidder
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In the design selection of pumping
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Bearings : Has been detailed elsewh
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Chapter 21 Water Treatment Works. 2
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Sterilisation : For sterilisation o
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ii) Agitator drive comprising elect
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xx) Air blower of 500 cfm capacity
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The contractor shall assume full re
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Filters House and associated plant
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Control room & laboratory : The var
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Sl. No. Parameter 28. Selenium (mg/
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The chlorinators shall be arranged
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21.12 Filtration Works. The works t
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21.16 Filter media and charging. Th
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Slow Start : Following cleansing op
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The gears between the driver and dr
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Special foundations in poor soil :
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Protection of property : Trees, shr
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22.6 Pipe laying. Laying of pipes u
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i) By Hacksaw : Hand or power opera
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ii) Transportation : Pipes should b
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iv) It is prudent to begin testing
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The contractor shall assume full re
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Though the wall thickness of the pi
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Butterfly valve for individual pump
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Chapter 24 Technical Specification
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Chapter 25 Technical specifications
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Erection/laying/hoisting, fitting a
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A. Electro-Mechanical Chapter 26 Ve
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PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

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