ANNEX II + III: TECHNICAL SPECIFICATIONS + TECHNICAL OFFER
Contract title : Supply and Installation of a Water Treatment Plant at Desrruisseaux
p 1 /…
Publication reference : EuropAid/136389/IH/SUP/LC
Column 1-2 should be completed by the Contracting Authority
Column 3-4 should be completed by the tenderer
Column 5 is reserved for the evaluation committee
Annex III - the Contractor's technical offer
The tenderers are requested to complete the template on the next pages:
 Column 2 is completed by the Contracting Authority shows the required specifications (not to be modified by the tenderer),
 Column 3 is to be filled in by the tenderer and must detail what is offered (for example the words “compliant” or “yes” are not sufficient)
 Column 4 allows the tenderer to make comments onits proposed supply and to make eventual references to the documentation
The eventual documentation supplied should clearly indicate (highlight, mark) the models offered and the options included, if any, so that the evaluators can see the
exact configuration. Offers that do not permit to identify precisely the models and the specifications may be rejected by the evaluation committee.
The offer must be clear enough to allow the evaluators to make an easy comparison between the requested specifications and the offeredspecifications.
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1
25 metric tonnes - 1.4mm Filter Media
Grain Shape
Effective Size
Uniformity
Coefficient
Sub-Round
1.35 – 1.50mm
1.30 to 1.60
Sub-Angular
1.51 – 1.65mm
1.30 to 1.60
Material Type
US Sieve Size
Maximum %
Coarse
8 and larger
20% w/w (retained)
Fine
18 and smaller
1.5% w/w (passed)
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The filter media shall predominately be siliceous material that
will resist degradation during handling and use.
Crushed gravel is not acceptable.
(Sub-Round) grains are essentially round with smooth surfaces
(non-angular).
(Sub-Angular) grains are essentially sub-angular with
multifaceted smooth edges.
The effective size is the diameter of the tenth percentile grain
(D10) by weight.
The uniformity coefficient is the diameter of the sixtieth
percentile grain by weight divided by the diameter of the tenth
percentile by weight (D60/D10).
The effective size and uniformity coefficient are determined by a
dry, 10-minute automatic sieve shaker procedure on a 500-800
gram sample with U.S. Sieve Nos. 8,10,12,14,16,18 as well as a
pan.
Specific Gravity - dry specific gravity must be greater than 2.5
Hardness - minimum 6.0 on Moh's Hardness scale (ref. Testing
and Inspection of Engineering Materials; McGraw-Hill Cook
Co., New York; 3rd Edition; Page 209).
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2 - Lamellas Gravity Settler Unit*
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*
Fabricated from ASTM A-36 Steel.
Minimum tank thickness shall be 1/4"
2 - Flash Mixer
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Tank assembly including Floc Drive
Flash mix tank support columns
Floc/Flash mix support frame
Mixer propeller and shaft
Flash mixer drive
2 - Sludge Hopper
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Each Lamella shall provide a minimum 570 ft2 of effective
projected area
Lamella Tank assembly
Lamella support columns
2 - Floc& Flash Mixer*
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and Inspection of Engineering Materials; McGraw-Hill Cook
Co., New York; 3rd Edition; Page 209).
Acid Solubility - less than 5% total loss in mass after a 30-minute
immersion in a hydrochloric acid (HCl) solution made by
combining equal volumes of water and standard reagent grade
12.1N (approx.) HCl.
General - must be in accordance with AWWA Standard B-10001
Inline flash static mixer
2 - Stage Mixer
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2 - Tank
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Fabricated from ASTM A-36 Steel.
Minimum tank thickness shall be 1/4"
4 - Low range turbid meter
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Shall be a variable slow speed mixer comprised of a paddle type
mixer with a hollow shaft gear reducer
The retention time for 3-stage flocculation tank shall be 20minutes
The turbid meter shall be a microprocessor-based, continuous
reading, on-line nephelometric instrument
The turbidity monitoring system shall include one or two turbid
meter(s) and one interface unit.
The turbid meter shall measure turbidity in the range of 0.001100 NTU
Accuracy shall be ±2% of reading or ±0.015 NTU (whichever is
greater) from 0 to 40 NTU; ±5% of reading from 40 to 100 NTU
Displayed resolution shall be 0.0001 NTU from 0 to 9.999 NTU
and 0.001 NTU from 10.000 to 9.999 NTU
Repeatability shall be better than ±1.0% of reading or ±0.002
NTU (whichever is greater).
The turbid meter shall meet all design and performance criteria
specified by USEPA method 180.1 or European equivalent
Light shall be directed through the surface of the sample and the
detector shall be immersed in the sample, eliminating glass
windows and flow cells.
Optical components shall be mounted in a sealed head assembly
that can be removed for calibration/ service without disturbing
sample flow.
The turbid meter body shall be constructed of corrosion-resistant
polystyrene.
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4 - Electromagnetic meters
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An internal bubble removal system shall be included to vent
entrained air from the sample stream.
Calibration of the turbid meter shall be either formazin-based (20
or 1 NTU) or instrument comparison-based calibration method.
User selectable signal averaging, bubble removal, alarm and
recorder output hold, and self-test diagnostics shall be provided.
Connections between the turbid meter(s) and the controller shall
be “plug and play.”
The Interface unit shall allow operators to control sensor and
interface functions with menu-driven software and shall provide
data logging of measurement data.
The interface unit shall have a built-in data logger with the
capacity to store data on 15-minute intervals for up to 6 months.
The interface unit shall be housed in a NEMA-4X (indoor)
industrial metal/plastic enclosure.
The DC power supply shall be housed in the interface unit
The DC power supply shall automatically accept input in the
range of 100 to 230 Vac, 50/60 Hz.
All system components shall be ETL listed to UL 61010A-1,
certified to CSA C22.2 No. 1010.1, and CE certified by
manufacturer to EN 61010-1.
All system components shall be CE certified by the manufacturer
to EN 61326 (industrial levels) for immunity and emissions,
Class A.
All system components shall meet FCC Part 15 for North
America and Canadian Interference-Causing Equipment
Regulation ICES-003, and CISPR 11 Class A levels for rest of
the world.
Low Range Turbid meter with Controller
Accuracy: ±0.2% of rate from 1 to 33 ft/sec.
Repeatability: ±0.1%
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4 - Controllers
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Mounting: Sensor, Wall or Panel
Keypad: 3 Internal Keys
LCD Display: Graphic Display
Backlight: Yes
4-20mA Output: Y
Pulse/Frequency/Alarm Output: 2 assignable
Empty Pipe Detection: Yes
Interface: RS485, PC, Hand Terminal
Batch Function: Yes
Power Supply: 90-265VAC, 10-35VDC, 18-63VDC/15-45VAC
Enclosure: Aluminium or Plastic (panel version) NEMA 6
1 - Chemical Feed (Pre-Engineered, Chemical Metering Systems Pre-Packaged and Self-Contained Chemical Feed Systems with
redundancy)
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Temperature (Process): +0 to 60ºF (PP), -05 to 79.4ºF (Ebonite),
-20 to 100ºF (PTFE Compact), -4 to 302ºF (PTFE Remote)
Pressures to: 5600 PSI
Liner Material: PTFE, Ebonite or Polypropylene
Flow Tube: 304 S.S.
Body Material: Carbon steel with two-part epoxy coating (S.S.
optional)
Electrode Material: 316 S.S.
Number of Electrodes: 2 (3rd grounding electrode optional)
Environmental Rating: NEMA 6
Fluid Conductivity: 5 μS/cm (min)
Connections: ANSI Flange
Single and Multiple Pump Configurations
Panel Material: Polypropylene or Fiberglass
Process Piping Material: PVC
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Process Connections: 1/2” NPT
Power: 115/220 VAC
Multi-Function Controller
Flow meters
Integral leak containment with optional Tubing Rupture Detector
relay output that can start a back-up pump and/or signal an
operator remotely via an autodialer.
Supply Tank Level Monitoring
Tanks
On-Line Analysers
Corp Stops with Solution Tube Assembly
Suitable for base or wall mounting
Flow rates to 50 GPH, pressures to 100 PSI
Rugged industrial TEFC motors.
Seal-less pumping technology.
No check valves – few moving parts.
Peristaltic Pump with NEMA 4x Controller
Back pressure and Pressure Relief Valves
500ml Calibration Cylinder
Pulsation Dampener
Diaphragm Protected Pressure Gauge
Suction Wye Strainer
PVC Ball Valves
Leak-proof Tubing Connectors
1 - Flocculation testing equipment
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Lab Stirrer, 4-Paddle Jar Tester with 2L Beakers
Tester
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Jar testers to utilize four operator-programmable memory banks
Built on a powder-coated steel uni-frame chassis
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Each memory bank should be able to run independently in any
one of the memories, continuously, at a selected speed or
automatic transition from a fast mix/long run, or any combination
or speeds and times desired to replicate actual plant conditions
and operation
Provides reliable, diffused sample illumination
Operates on 24DC with a power supply that works with 100 to
240VAC electrical sources
Dimensions: 394X768X235mm (15.5X30.2X9.3inches)
Jars(6)
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Clear plexiglass, square jar with sample delivery port for
monitoring flocculation.
Measures 21X12.7X12.7cm (8.3X5X5inches) with a capacity of
2L.
Suitable for use with six-unit gang
Includes tubing, stopper, clamp and 50mL graduated beakers
1 - Micro pipette
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Two-stage plunger dispenser which ensures high accuracy and
precision in pipetting techniques and facilitates last drop
dispensing
Tip cone accepts both micro and ultra micro pipet tips
Micropipette should be autoclavable and colour-coded for easy
identification
*Surface finish
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All structural and tank stresses to be within the allowable limits as shown in Steel Construction Manual of the American Institute of Steel, latest edition or the
European equivalent.
Weldments shall be designed and performed in general conformance with AWS design standards. Continuous welds shall be used for all seal or structural
support welds and intermittent welding for stiffener welds
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All seal welds shall be visually inspected and at a minimum be dye penetrated tested
Primer and paint shall be applied in accordance with coating manufacturer's recommendations
Stainless steel, nickel, Monel, Lead, Hastelloy, galvanized steel, rubber, Plastic, fiberglass surfaces, and fasteners shall not be painted
All other appurtenances including motor, reducer, etc. shall be supplied with the manufacturer's standard finish
*Carbon Steel Surface Paint
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Exterior Surfaces: Sandblasted in accordance with the Steel Structures with the Steel Structures Painting Council Surface Preparation SP-6 Method, latest
edition to obtain a profile of 15.-3.0 mils, on all non-wetted surfaces.
The base coat shall be Carboguard 890 High Performance, Cycloaliphatic Amine Epoxy Mastic Coating, White (S800) applied at 4.0-5.0 mils DFT.
The finish coat shall be Carbocrylic 3359 DTM Single Component, Water Based High Gloss Terpolymer Acrylic Coating, Safety Blue (S150) applied at 3.0-5.0
mils DFT
Total DFT shall be 7.0 mils minimum average
Interior Surfaces: Sandblasted in accordance with the Steel Structures with the Steel Structures Painting Council Surface Preparation SP-10 Method, latest
edition to obtain a profile of 15.-3.0 mils, on all wetted surfaces.
The base coat shall be Carboguard 891 High Performance, Cycloaliphatic Amine Epoxy Mastic Coating, White (S800) applied at 6.0-8.0 mils DFT.
The finish coat shall be Carboguard 891, Solids, Polyamine Epoxy Coating, Light Blue (0100) applied at 6.0-8.0 mils DFT.
Total DFT shall be 8.0 mils minimum average
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