BID SPECIFICATION INFORMATION REQUIREMENTS

BID

SPECIFICATION

INFORMATION

REQUIREMENTSAND

BID

EVALUATION

FORMFOR

WET

ELECTROSTATIC

PRECIPITATORS

Publication ICAC-EP-10W

January 2008

ICACThe Institute of Clean Air Companies, Inc.(ICAC) is the national association ofcompanies that supply stationary sourceair pollution control and monitoringsystems, equipment, and services. It wasformed in 1960 (under the name IGCI) asa nonprofit corporation to promote theindustry and encourage improvement ofengineering and technical standards.

The Institute’s mission is to assure astrong and workable air quality policythat promotes public health,environmental quality and industrialprogress. As the primary representative ofthe air pollution control industry, theInstitute seeks to evaluate and respond toregulatory initiatives and establishtechnical standards to the benefit of allcitizens.


Bid Specification Information Requirements and Bid Evaluation Form for Wet Electrostatic Precipitators

Bid Specification InformationRequirements & Bid EvaluationForm for Wet ElectrostaticPrecipitators

Date Adopted: January 2008

SUMMARY:

This publication contains forms andaccompanying text for collecting datanecessary to solicit bids from vendors for wetelectrostatic precipitators, preparingspecifications and bid documents, and forcollecting the elements of and evaluating thebids received. Explanations and commentaryare also included to aid the purchaser inwriting complete specifications and properlydefining parameters needed for design.

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ICACCopyright © 2008.Institute of Clean Air Companies, Inc.,All rights reserved.1730 M St. NWSuite 206Washington, DC 20036Telephone: (202) 457-0911Facsimile: (202) 331-1388Website: www.icac.com

David C. Foerter, Executive DirectorEmail: [email protected]

Chad S. Whiteman, Deputy DirectorEmail: [email protected]

Table of Contents

page

SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1. HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. OBJECT AND SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3. ABBREVIATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5. INSTRUCTIONS FOR COMPLETING BID SPECIFICATION INFORMATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . 75.2 BIDDER SCOPE OF SUPPLY . . . . . . . . . . . . . . . . . . . . . . . 85.3 PROCESS INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . 85.4 WET ELECTROSTATIC PRECIPITATOR SIZING,

PERFORMANCE, AND STRUCTURAL DESIGN

CRITERIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95.5 ADDITIONAL SPECIFICATION INFORMATION . . . . . . . . . 9

6. INSTRUCTIONS FOR USING THE BID EVALUATION FORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106.1 ADDITIONAL BID INFORMATION. . . . . . . . . . . . . . . . . . 10

FORM 1:Bid Specification Information Requirements . . . . . . . . . . . 11

FORM 2:Bid Evaluation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

NOTES AND ADDITIONAL INFORMATION . . . . . . . . . . 24

1. HISTORY

This document incorporates the contents of ICAC BidEvaluation Form for Electrostatic Precipitators,ICAC-EP-10, which was adopted in 1995, to reflect therequirements for wet electrostatic precipitator technol-ogy for both power sector and industrial sector applica-tions. The Integrated Control Technology Division,which covers particulate and acid gas control topics, ofthe Institute of Clean Air Companies prepared this newdocument in order to assure that appropriate and con-sistent information for wet electrostatic precipitator de-sign and selection is provided to both vendor andcustomer.

2. OBJECT AND SCOPE

The objectives of this publication are to help pur-chasers of wet electrostatic precipitators compile all in-formation necessary for vendors to producemeaningful bids, and to enumerate those elements ofthe bids which the purchasers should consider in theirevaluations of competing bids. It does not recommendspecific values for these elements. The purchasers maywish to include some or all of the evaluation elementsin their bid specifications.

3. ABBREVIATIONS

AAC Amps, AC currentacf Actual Cubic Feetacfm Actual Cubic Feet per Minuteam3/hr Actual Cubic Meters per HourAvg. AverageC.E. Collecting ElectrodeDist. DistributionD.E. Discharge ElectrodeDESP Dry Electrostatic PrecipitatorD.P. Distribution Platedscf Dry Standard Cubic Feetdscfm Dry Standard Cubic Feet per MinuteEff. EffectiveESP Electrostatic Precipitator°C Degrees Celsius°F Degrees FahrenheitFGD Flue Gas Desulfurization Systemft. Feetg Gramsgr. Grainshrs. HoursH.V. High VoltageInsul. Insulatorin. Incheskg KilogramskV KilovoltskVA Kilovolt-AmpereskW Kilowatts

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kWh Kilowatt-hourslb/mmBtu Pounds per Million British Thermal

Units Heat Inputm3/hr (Actual) Cubic Meters per Hour mA Milliamperesmbar. MillibarMax. Maximumm Metersmg milligramsmm Millimetersng/J Nanograms per Joule Heat InputNm3 Normal Cubic Meters (at 0°C and 1

atmosphere)no. NumberSCA Specific Collecting Areascfm Standard Cubic Feet per Minutesec. SecondSI System International Units (metric)sq. SquareTot. TotalT-R Transformer-RectifierU.S. EPA United States Environmental Protection

AgencyVAC Volts, AC current Vol. VolumeVolt. VoltageWESP Wet Electrostatic Precipitator w.c. Water ColumnWt. Weight

4. DEFINITIONS

Aerosol Particle of solid or liquid matter that can re-main suspended in the air because of its small size.Particulates under 1 micron in diameter are generallycalled aerosols. A specific definition of aerosol may beneeded for a particular specification.

Air Core Reactor (ACR) Protects the T-R diodebridge from high voltage transients that occur withinthe ESP.

Air Leakage Unwanted air entering into an exhaustsystem (holes in ducts, missing and ineffective seals,etc.).

Arc An electrical discharge of substantial magnitudefrom the high voltage system to the grounded system,of relatively long duration and not tending to be imme-diately self extinguishing.

Aspect Ratio The ratio obtained by dividing thelength of the precipitator by the effective height.

Automatic Power Supply Automatic regulation ofhigh voltage power for changes in precipitator operat-ing conditions utilizing feedback signal(s). Sometimesreferred to as AVC (automatic voltage control).



Automatic Voltage Control (AVC) Monitors second-ary current and voltages to assist an operator in deter-mining optimum power levels and spark rates of eachfield (Note: “optimum” settings need to account forprocess variables (e.g. fuel or temperature changes).

Back Corona A phenomenon that occurs when thegas within a high resistivity dust layer becomes ion-ized, which causes heavy positive ion backflow, whichneutralizes negative ion current and reduces voltagelevels. This impact on the dust layer can result in reen-trainment of collected particles.

Bushing High voltage insulator where the high volt-age lead passes through the insulator.

Bus Section The smallest subdivision of the wet elec-trostatic precipitator internal high voltage system thatcan be de-energized independently by sectionalizationof the high voltage system.

Capture Velocity The air velocity at any point infront of a hood or at a hood opening necessary to over-come opposing air currents and to capture the contam-inated air at the point by causing it to flow into thehood.

Carrying Velocity The gas velocity that is necessaryto keep the dust airborne (usually 3500 to 4599 ft/minin ductwork depending upon the nature of the dust).

Chamber A gas-tight longitudinal division of an elec-trostatic precipitator. An electrostatic precipitator hav-ing a single gas tight dividing wall is referred to as adouble chamber precipitator. Very wide electrostaticprecipitator chambers frequently are equipped withnon-gas-tight load-bearing walls for structural reasonsas these ESPs are single chamber.

Cold Roof The casing section that serves as the pent-house ceiling/WESP roof walking surface.

Collecting System The portion of the electrostaticprecipitator to which the charged dust particles andliquid droplets are collected and are washed off. Thereare no rappers utilized for wet electrostatic precipita-tors; instead, a liquid is used as a means of cleaningthe collecting system.

Collecting Surface The individual elements thatmake up the collecting system and which collectivelyprovide the total surface area of the electrostatic pre-cipitator for the deposition of dust particles and liquiddroplets. These elements could be plate type or tubular.

Collection Efficiency The weight of particulate col-lected per unit time divided by the weight of particulateentering the electrostatic precipitator during the sameunit time expressed as a percentage. The computation

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is as follows: Efficiency � [(Part. In) � (Part. Out)]/(Part. In) � 100

Concentration The amount of dust or mist in a gasstream usually expressed in terms of particulate weightper volume of gas (grains per cubic foot, pounds per1000 pounds of gas, parts per million or milligrams percubic meter).

Current Density The amount of secondary currentper unit of the electrostatic precipitator collecting sur-face or discharge electrode. Common units are mA/m2,mA/ft2, mA/cm2 for density on the collecting surfacesand mA/m, mA/ft, mA/cm for the discharge electrodes.

Collecting Surface Area The total flat projected areaof collecting surface exposed to the active electricalfield. For plate type WESP � effective length � effectiveheight � 2 � number of gas passages. For tube typeWESP � effective tube circumference � effective tubeheight � number of tubes.

Corona Power (KW) The product of secondary cur-rent and secondary voltage. Corona power density isgenerally expressed in terms of: (1) watts per squarefoot of collecting surface, or (2) watts per 1000 acfm ofgas flow. A multiplier of approximately 1.07 can be ap-plied to adjust for a ripple of high voltage.

Current Limiting Reactor (CLR) An impedance de-vice used to protect T-R diode bridge by limiting thecurrent during an arc/spark. It also provides a meansof wave shaping voltage to provide higher average values.

Dew Point The temperature at which the equilib-rium vapor pressure of a liquid is equal to the partialpressure of the respective vapor. For air containing wa-ter vapor, it is the temperature at which liquid waterbegins to condense for a given state of humidity andpressure. For flue gas containing water vapor and SO3,it is the set of conditions at which liquid sulfuric acidbegins to condense as the temperature is reduced.

Dielectric Fluid A substance used to keep the trans-former operating at moderate temperature levels andas a dielectric where space is concerned.

Diode Assembly Converts high voltage AC output ofthe transformer to a DC signal.

Discharge Electrode The component that is installedin the high voltage system to perform the function ofionizing the gas and creating the electric field. Typical

configurations are: Rigid Discharge Electrode (RDE),Rigid Frame (RF), and Weighted Wire (W/W).

Effective Length Total projected length of collectingsurface measured in the direction of gas flow. Lengthbetween fields is to be excluded.

Electrical Field Arrangement of bus sections in thedirection of gas flow that is energized by one or morehigh voltage power supplies.

Flow Modeling An investigative technique usingcomputer, mathematical, or physical representation ofa system that accounts for all or some of its knownproperties. Flow modeling is typically used to defineflow characteristics and distribution.

Gas Flow Orientation Gas flow orientation in aWESP can be of horizontal-flow, up-flow, and down-flow (vertical flow) orientation.

Gas Flow Rate The volume of process gas at anypoint of the plant exhaust system measured in terms oftime. Typical units of measurement are: acfm, am3/hr,scfm, and dscfm.

Grain A unit of weight commonly used in air pollu-tion control. One grain � 1/7000 lb.

Grain Loading The concentration of particles con-tained in the gas emitted from a pollution source. Themeasurement is specified as grains per volume of gasemitted.

Heat Jacket Second “skin” installed over ESP casingwith heated air blown through the intermediate space.The heat jacket serves to replace insulation in prevent-ing condensation or corrosion.

High Voltage Insulator Material (i.e. ceramic, alu-mina) used to separate high voltage components fromgrounded parts.

High Voltage Structure The structural elements nec-essary to support the high voltage discharge electrodesin relation to the grounded collecting surface. Highvoltage insulators are used to electrically isolate andsupport this system.

High Voltage System All parts of the electrostaticprecipitator that are maintained at a high electrical po-tential under normal operating conditions.

High Voltage Power Supply An electrical supply unitthat produces the high voltage DC required for the pre-cipitation process to occur. The supply system consistsof a transformer-rectifier (T-R) combination and asso-ciated controls.

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Hot Roof The ESP top casing that separates the hotgas on one side and insulator compartment on theother.

Insulation Any method that will retard the flow ofheat through a surface.

Manometer A u-shaped device for measuring thestatic pressure at a point relative to some other point;the pressure difference causes water to rise or fall. Thedifference in the level of the water columns is equiva-lent to the pressure differential.

Manual Power Supply Manual regulation of highvoltage power based on electrostatic precipitator oper-ating conditions as observed by plant operators.

Mechanical Field A sub-division of an electrostaticprecipitator in the direction of the gas flow defined bycollecting tube or plate length. A mechanical field maycontain one or more electrical fields.

Nozzle Ductwork transition at WESP inlet or outlet.

Opacity The amount of light obscured by particlescontained in the gas stream. Opacity is typically usedas an indicator of emissions performance for a particu-late control device.

Precipitator Gas Velocity Generally expressed interms of ft/sec or m/sec and computed as follows:Velocity � Gas Volume (ft3/sec) and ESP EffectiveCross-Section Area (ft2).

The effective cross-section is effective field height �width of gas passage � number of passages for platetype WESPs and cross-sectional area of a tube � num-ber of tubes for tube type WESPs.

Particulate Concentration (Ash, Dust or Mist) Theweight of particulate or mist contained in a unit of gas(grams per normal cubic meter, pounds per thousandpounds of gas, pounds per million Btu heat input,grains per actual cubic foot of gas or grains per stan-dard dry cubic foot). Note: The temperature and pres-sure of the gas must be specified if stated as volume.

Penthouse A weatherproof, gas-tight enclosure overthe wet electrostatic precipitator that shelters the highvoltage insulators.

Pitot Tube A specially constructed probe for takingvelocity pressure readings in a duct.

Plenum Pressure equalizing chamber.



Precipitator Current The rectified or unidirectional(DC) average charging current to the precipitatormeasured by an analog milliamp meter or signal con-ditioning circuit located in the ground leg of the recti-fier that feeds a digital display or microprocessorcontrol/display system. Average charging current isequal to average corona current.

Precipitator Voltage The rectified or unidirectional(DC) average voltage to the (high voltage) precipitatormeasured by an analog voltmeter or signal condition-ing circuit located in the ground leg of the rectifier thatfeeds a digital display or microprocessor control/display system. Most modern controls distinguish be-tween peak, average, and valley voltage.

Primary Current The current in the primary wind-ing of a transformer as measured by an analog AC am-meter or signal conditioning circuit that feeds a digitaldisplay or microprocessor control/display system.

Primary Voltage The voltage across the primarywinding of a transformer as measured by an analog ACvoltmeter or signal conditioning circuit that feeds adigital display or microprocessor control/display system.

Pulsing “Intermittent Energization (IE)”, “Semi-Pulsing”, and “Pulse Blocking” are terms commonlyused to define 60 Hertz pulsing of precipitator electricalsections. In these systems, some of the half-waves areblocked to create a more pronounced ripple. Chargingration (CR) is a term that normally gives the repetitionrate of half cycles (e.g. CR 1:5 means one pulse out offive half waves are used for charging the ESP.)

PM10 Particulate matter with an aerodynamic diame-ter less than or equal to a nominal diameter of 10 microns.

PM2.5 Particulate matter with an aerodynamic diame-ter less than or equal to a nominal diameter of 2.5 microns.

PPM (Parts per Million) The number of parts of agiven pollutant in a million parts of air. Units are ex-pressed by weight or volume.

Pressure Drop (�P) The differential pressure be-tween two points in a system. The resistance to flowbetween the two points.

Pulsed Power Supply Superimposes high voltagepulses on base voltage to enhance performance inpresence of high resistivity dust.

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Resistivity Reciprocal of conductance. The primaryelectrical property used in evaluation of collection effi-ciency of ESPs (expressed in units of ohm-centimeter).

Spark A discharge from the high voltage system tothe grounded system, self-extinguishing and of shortduration.

Specific Collecting Area (SCA) A figure obtained bydividing total effective collecting surface of the electro-static precipitator by gas volume, expressed in ft2/1000acfm or m2/m3/s. SCA should always relate to well de-fined plate spacing.

Stack Opacity Monitors U.S. EPA approved monitorsutilized to measure the light obscured by particulatecontained in the gas at the stack location.

System Gas Volume All gases flowing through theexhaust gas system including excess air, scavenger airand leakage air.

Transformer-Rectifier (T-R) A unit comprised of atransformer for stepping up normal service to voltagesin the kilovolt range, and a full wave bridge rectifieroperating at high voltage to convert alternating current(AC) to unidirectional current (DC).

Transition An aerodynamically designed inlet or out-let duct connection to the electrostatic precipitator.Transitions are normally included as part of the precip-itator, sometimes referred to as inlet/outlet nozzles.

Traverse A method of sampling points in a ductwhere pressure readings will be taken to determine ve-locity. A traverse divides the duct into equal, evenly dis-tributed areas that are each tested, compensating forerrors caused by uneven gas flow in the duct.

Treatment Time A figure in seconds, obtained by di-viding the length of an electrostatic precipitator’s effec-tive collecting length or height by the precipitator gasvelocity.

Turbulent Flow Fluid flow in which the velocity of agiven particle changes constantly both in magnitudeand direction.

Weather Enclosure A non-gas tight enclosure overthe roof of the wet electrostatic precipitator for protec-tion of roof mounted equipment and personnel.

Voltage Divider A means for supplying a low voltagefeedback signal that is proportional to the kV output ofthe T-R.

Refer to ICAC publication “Terminology forElectrostatic Precipitators”, (ICAC-EP-1) for additionaldefinitions of other terms.

5. INSTRUCTIONS FORCOMPLETING BIDSPECIFICATION INFORMATIONREQUIREMENTS

These Bid Specification Information Requirements out-line the basic data required for wet electrostatic precip-itator sizing and provide insight to aid in writing bidspecifications. Complete and properly prepared specifi-cations for wet precipitation equipment are essential toassure the purchaser that the equipment will be prop-erly sized to satisfy control requirements, and to avoidthe need for change orders and consequent added cost.

Enclosed are forms designed to ensure that allnecessary data is provided with the bid specifications.These forms list pertinent data required for proper siz-ing of a wet precipitator or, should insufficient or in-complete data be supplied, identify sources that may beconsulted to acquire the necessary information.Additional data pages ensure that other required infor-mation is included in the specification.

All data pages are identified by major headingsand sub-headings. Beginning with the first of the datapages, explanations are provided for clarification of thedata required for each sub-heading. Commentary isalso included to aid the purchaser in developing ameaningful bid request that will result in bids that pro-vide properly sized equipment and the complete de-sired scope of work.

In general, wet electrostatic precipitator industryexperts and suppliers agree on the important parame-ters for precipitator sizing. However, supplier databasesand sizing techniques may take into account differentparameters, depending upon the individual supplier’sexperience and design basis. Purchasers may find agreater range of wet electrostatic precipitator designthan is found for dry electrostatic precipitators. Theforms and commentary provided with this publicationseek to incorporate all data which might be expected tobe used by wet electrostatic precipitator suppliers.

5.1 General InformationInformation included under the heading “GeneralInformation” should be provided to help the bid-der identify the location of the installation and theparties involved in specifying the equipment andevaluating the bids. Additional information re-garding proposal requirements is also included inthis section.5.1.2 Purchaser. The purchaser of the equip-

ment must be identified clearly. The pur-chaser may be different than the “User,” ormay be the same.

5.1.3 User. As with “Purchaser,” the user shouldbe clearly identified. The purchaser mayprovide financing for an installation, but notbe the end user of the equipment specified.

5.1.4 Architect/Engineer. An architect/engineer,if used, will generally provide control over

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all technical aspects of the specification andsubsequent installation. While informationregarding the architect/engineer (address,contact name, and phone, etc.) is important,it is equally important that the purchaser orwhoever is specifying the equipment pointout to each bidder the contact or entity thatwill ultimately decide the technical require-ments for the installation.

5.1.5 Site Location. The site location refers to the ultimate installation site for the equipment.

5.1.6 Schedules. Pertinent dates defining projectscheduling requirements should always besupplied. These dates include:

• Proposal Submittal• Award of Contract• Engineering information such as loading

diagrams, general arrangement/outlinedrawings, single line diagrams; P&IDs,and consumables

• Equipment Delivery• Erection Start/Completion• Plant, Boiler, or Other Process

Equipment Outage• Start-up• Acceptance Testing

5.1.7 Equipment Type. The type of installation(new, replacement, or upgrade) must beidentified. For example, a replacement unitor upgrade may require different labor or la-bor skills than a new installation.“Supplemental” refers to new units retrofitdownstream of existing equipment.

5.1.8 Proposal Type. The type of proposal de-sired should be indicated. A specification fora firm priced proposal for purchase gener-ally takes a great deal more time to developthan one for a budgetary proposal.Evaluation of firm bids for purchase willalso take more time. Reasonable time peri-ods for bidding and evaluation need to be allowed.

5.2 Bidder Scope of SupplyThe overall scope of the project must be clearlyidentified to ensure that the bidder includes allnecessary work in his proposal. Check blocks areprovided for each item on the checklist to easecompletion of the data forms. Specification infor-mation should include details of each item that ischecked under “Bidder Scope of Supply.”

5.3 Process InformationThe process information requested is critical for proper sizing of electrostatic precipitationequipment. 5.3.1 Process Description. Process information

describes the process from which exhaustgas emanates. Wet electrostatic precipitators



that are to be installed to treat utility boilerexhaust gases may require different bidder-proprietary sizing criteria than will wet elec-trostatic precipitators to be installed onindustrial applications. It is extremely im-portant, therefore, to fully identify theprocess on which the wet electrostatic pre-cipitator is to be installed, and to include alldetails important for wet electrostatic pre-cipitator sizing and design.

The major process related factors affect-ing wet electrostatic precipitator sizing in-clude volumetric and mass gas flow rates,gas temperature, gas moisture content, par-ticulate size distribution, loading of solidparticulate, organic and inorganic condens-ables, and droplet carryover from upstreamdevices.

5.3.2 Fuel Analysis. Unlike a dry electrostaticprecipitator that treats hot flue gas directlyfrom the combustion source, a wet electro-static precipitator is necessarily preceded bya device to cool the flue gas to adiabaticmoisture saturation temperature. Therefore,although the fuel analysis is essential to de-sign the upstream saturator or gas absorber,the detailed flue gas analysis exiting the sat-urator must be known in order to properlysize and design the wet electrostatic precipi-tator. While fuel analysis may be providedfor informational purposes, it is rarely usedto size or design the WESP.

5.3.3 Process/Flue Gas Analysis. In order toproperly size and design a WESP, it is es-sential that the purchaser identify all of theexpected pollutants in the flue gas enteringthe WESP and which of those pollutants areto be collected by the WESP. Typically, anexisting stack test is available or can be per-formed to identify those pollutants to be re-moved in the WESP. Care should be taken toensure that a process/flue gas analysis isprovided that will not result in unreasonablewet electrostatic precipitator sizing, and thatwill ensure compliance with emission limitsover the full range of system operation.

Providing only the minimum and maximum values will result in bidders se-lecting the “worst case’’ values that will af-fect the operation of the precipitator. Using acombination of all such “worst case’’ valuessimultaneously can result in the selection ofa wet electrostatic precipitator that is over-sized and more expensive. The purchasershould indicate “Design Values’’ for theprocess/flue gas that will ensure compliancewith emission limits over the entire range ofoperation.

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5.3.4 Particle Size Distribution. Suspendedsolid and/or aerosol particle size distribu-tion directly affects wet electrostatic precipi-tator performance. In general, finer particlesare more difficult to collect than are largerparticles. Providing a particulate size analy-sis of the expected incoming process/fluegas will help ensure the proper sizing of thewet electrostatic precipitator. The referencetest method and apparatus used for particlesize determination should be identified.Also, a high loading of sulfuric acid (H2SO4)mist, or other ultra-fine particles, can resultin current suppression during wet electro-static precipitator operation, requiring spe-cial operating consideration and/or a largerwet electrostatic precipitator.

5.3.5 Special Considerations. The purchasershould fully identify the process that theWESP will be applied to, as well as all up-stream equipment that will treat the flue gasprior to the WESP. Many applications haveunique process conditions that will affect thesizing and design of the WESP and a com-plete “Process Flow Diagram” will assist theWESP designer in selecting the proper con-figuration for a particular application.

5.4 Wet Electrostatic Precipitator Sizing,Performance, and Structural DesignCriteria5.4.1 Sizing Criteria. Operating conditions

specified by the purchaser play the largestrole in the proper sizing and design of a wetelectrostatic precipitator.

The sizing equations for selecting theappropriate wet electrostatic precipitatorcollecting area include variables for partic-ulate removal efficiency, gas volume, power input and current suppression.Additionally, opacity requirements mayoverride any particulate emission require-ments if a higher precipitator efficiency isnecessary to meet stack exhaust opacitylimits than to meet particulate emissionlimits.

The volumetric and mass gas flow ratemust be specified, in part to ensure a con-sistent basis for different vendors’ designs.The basis for determining the specified flowrate should be included, as should the basisfor guarantee testing. These values are typi-cally based on stoichiometric or other cal-culations, or measured by pitot tube. Ifcalculations are used, the maximum gasflow rates under any process conditionsmust be specified, as well as margins addedfor conservatism. Inlet loading and re-quired outlet emissions values should bepresented in like units to ensure consis-tency and correctness in different bids.

95.4.2 Test Method. Reference test method and testequipment for measuring emission guaran-tee parameters should be included. No onetest method can be used to measure the var-ious pollutants the wet electrostatic precipi-tator may be required to remove.

5.4.3 Structural Design Criteria. Structural de-sign is dictated by operating criteria thatmay differ significantly from criteria usedfor wet electrostatic precipitator sizing. Theappropriate criteria dictating structural de-sign must accompany any bid specification.Please refer to ICAC publication Structural Design Criteria for Electrostatic PrecipitatorCasings (ICAC-EP-8, revised 1993). Forstructural design purposes, the followingdefinitions of temperature and pressure apply: 5.4.3.1 Normal Operating Gas

Temperature (To) and Pressure(Po), are specific to the normal con-tinuous operation of the WESP.These are structurally analogous tolive loads.

5.4.3.2 Maximum Temperature (Tmx)and Gas Pressure (Pmx) occur inaccidental situations (rare occur-rence, short duration). These arestructurally analogous to wind orseismic loads. The Maximum GasPressure Pmx shall be the test blockcapability of the forced draft fan orthe induced draft fan at ambienttemperature less the actual pressuredrop incurred in the ducting systemfrom fans to the WESP.

5.4.3.3 Excursion Temperature (Tex) is asurge of temperature for a maxi-mum of one hour, and is consideredfor calculating maximum linear ex-pansion and the selection of materi-als used in the WESP.

5.5 Additional Specification InformationSpecification documents may need to include moreinformation than is shown on the attached forms.Sections may be included discussing various wetelectrostatic precipitator parts and auxiliarieswhich the purchaser wishes to include in the spec-ification. The following partial list should be considered:

• Approved Sub-Vender List• Complete Water Analysis• Configuration: Horizontal or Vertical • Degree of Erection• Materials of Construction, Including Thickness• Method of Wash: Spray, Irrigation or

Condensing; Intermittent or Continuous• Model Study• Safety Interlocks

• Type and Material of Collecting Electrode:Tubular or Plate

• Type and Material of Discharge Electrode • Type of High Voltage Power Supply:

Conventional T-R or High Frequency PowerSupply

• Water Usage: Once Through or a RecycleSystem Some of these items are listed on the bid eval-

uation forms, which can be used as a checklistwhen writing the specifications.

Layout drawings, indicating real estate restric-tions, lay down areas, the arrangement of existingequipment, and the location and general layout ofthe new equipment, should be supplied by the pur-chaser. Restrictions in space available for theequipment are very important as they can impactthe configuration selected for the WESP.

6. INSTRUCTIONS FOR USING THEBID EVALUATION FORM

Five columns are included on the bid evaluation form.The first column lists typical parameters or items thatmay be of interest during bid evaluation. Some of theitems listed in the first column of the bid evaluationform may be “required” by the purchaser. By includinga column marked “Required,” the purchaser may use



the evaluation form as a checklist to ensure that all re-quirements are included in the specification and thatsuch requirements are addressed by the bidders.

The final three columns are provided for bid eval-uation. Values provided by each bidder can be enteredfor each item in the first column for side-by-side com-parison of each bidder’s offering.

6.1 Additional Bid InformationAdditional information, not included on the at-tached data sheets, may also be required by thepurchaser. For example, should guarantees or ex-pected operation require reporting at “standard” or“normal” conditions, the purchaser must identifywhat defines those conditions.

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IMPORTANT

On the form “Bid Specification InformationRequirements” and “Bid Evaluation Form” you willbe asked to choose either English Units or SystemInternational (SI) Units for some measurements. Tohelp quickly identify the SI unit designation it willbe preceded by the symbol �. The following head-ing also appears at the top of pages 14 and 16 as areminder to choose only one.

NOTE - Choose Either: English unites� SI units

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FORM 1: BID SPECIFICATION INFORMATION REQUIREMENTS – Sheet 1 of 4

GENERAL INFORMATION

� PURCHASER Name: ________________________________________________________________________________________________

Address: ______________________________________________________________________________________________

City/State/Zip: __________________________________________________________________________________________

Contact __________________________________________ Phone: ______ - ____________ Fax: ______ - ____________

Email: ________________________________________________________________________________________________

� USER Name: ________________________________________________________________________________________________

Address: ______________________________________________________________________________________________

City/State/Zip: __________________________________________________________________________________________


Email: ________________________________________________________________________________________________

� ARCHITECT/ Name: ________________________________________________________________________________________________ENGINEER Address: ______________________________________________________________________________________________

City/State/Zip: __________________________________________________________________________________________


Email: ________________________________________________________________________________________________

� PLANT SITE LOCATION � EQUIPMENT TYPE

Plant Name: ___________________________________________________________________________

Address: ______________________________________________________________________________

City/State/Zip: _________________________________________________________________________

Contact: _________________________ Phone: ______ - ____________ Fax: ______ - ____________

Email: ________________________________________________________________________________

� SCHEDULE DATESMaterial

Pre-Bid Bid Contract Kick-Off Engineering DeliveryMeeting: ____________ Due: ___________ Award: ____________ Meeting: __________ Completion: __________ Start: ____________

MaterialDelivery Installation Installation Unit Performance PerformanceCompletion: __________ Start: __________ Completion: ________ Start-Up: __________ Test “A”: ____________ Test “B”: __________

SCOPE OF SUPPLY

BIDDER OWNER/ BIDDER OWNER/REQUIRED OTHER REQUIRED OTHER

❑ ❑ Access Doors ❑ ❑ Elevator❑ ❑ Access Platforms - Casing ❑ ❑ Engineering ❑ ❑ Access Platforms- Inlet Transition ❑ ❑ Erection❑ ❑ Access platforms - Outlet Transition ❑ ❑ Erection Supervision❑ ❑ Auxiliaries (details to be provided ❑ ❑ Expansion Joints

by Purchaser) ❑ ❑ Foundations❑ ❑ Baffles ❑ ❑ Freight Grounding❑ ❑ Casing ❑ ❑ Instrumentation❑ ❑ Collecting Electrodes ❑ ❑ Insulation & Lagging - Supply Only❑ ❑ Construction Advisor ❑ ❑ Insulation & Lagging - Supply & Install ❑ ❑ Control Logic Design ❑ ❑ Insulator Heater System❑ ❑ Control Room ❑ ❑ Insulator Purge Blowers❑ ❑ Controls ❑ ❑ Insulator Compartments or Penthouse for ❑ ❑ Demolition Insulators❑ ❑ Discharge Electrodes ❑ ❑ Interface w/Plant DCS❑ ❑ Duct Transitions ❑ ❑ I.D. Fans❑ ❑ Duct Work ❑ ❑ Lighting❑ ❑ Low Voltage Wiring ❑ ❑ Tool Trailer❑ ❑ Model Study ❑ ❑ T-R Weather Enclosure❑ ❑ Painting - Priming of Steel Surfaces ❑ ❑ T-R Hoist System❑ ❑ Painting - Finish Painting ❑ ❑ Transition Inlet ❑ ❑ Performance Testing ❑ ❑ Transition Outlet ❑ ❑ Performance Testing Supervision ❑ ❑ Wash pumps❑ ❑ Pipe Heat Tracing ❑ ❑ Weather Enclosure HVAC System

❑ New ❑ Replacement❑ Upgrade ❑ Supplemental

� PROPOSAL TYPE❑ Firm ❑ Budget

� FREIGHT TERMS:____________________________

12


SCOPE OF SUPPLY (continued)

BIDDER OWNER/ BIDDER OWNER/REQUIRED OTHER REQUIRED OTHER

❑ ❑ Piping ❑ ❑ Weather Enclosure Framing ❑ ❑ Power Distribution ❑ ❑ Weather Enclosure Siding ❑ ❑ Slide Plates ❑ ❑ Water Recycle System ❑ ❑ Stack/Stub Stack ❑ ❑ Other❑ ❑ Start-Up Services ❑ ❑ ____________________❑ ❑ Supervisory Controls ❑ ❑ ____________________❑ ❑ Support Steel ❑ ❑ ____________________❑ ❑ Stair Tower ❑ ❑ ____________________❑ ❑ Switch Gear/Substation ❑ ❑ ____________________❑ ❑ Test Ports ❑ ❑ ____________________❑ ❑ Test Port access platforms ❑ ❑ ____________________❑ ❑ Testing Services ❑ ❑ ____________________

PROCESS INFORMATION: NON-FOSSIL FUEL APPLICATIONS (Must be provided by owner or architect/engineer.)

� PROCESS DESCRIPTION

Industry ________________________________________________

Application/Process _______________________________________________________________________________________________________

Combustion Equipment ____________________________ Manufacturer & Model ________________________ Number of Units ____________

Material Type & Feed Rate ___________________________________________ Heat Input ____________________________________________

Process Output - Continuous or Batch - Peak Output - Design Output(circle one) ________________________________ ____________________________________________

Upstream Air Pollution Control Devices (Include Details) __________________________________________________________________________

________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________

� FUEL DESCRIPTIONFuel Type Feed Rate____________________________________________________________ _________________________________________________________

________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________

Other Information________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________

� WATER SOURCEQuantity Available (gpm)________________________________________________________________________________________________________________________

Quality Available - Chloride Concentration (ppm) - Suspended Solids - pH - Other________________________ __________________ ____________________ ___________________

� PARTICULATE AND AEROSOL DESCRIPTION

Particulate Type__________________________________________________________________________

Particulate Chemical Composition/Analysis

Constituent % By Weight_____________ _______________________________ _______________________________ _______________________________ _______________________________ __________________

Reference Test Method Used for Particle Size Determination: _____________________________________

� PARTICLE SIZE DISTRIBUTION (Suspended Solids and Aerosols)

Diameter % Undersize Reference(Microns) (% of Total) Test Method� 0.5 micron ___________ ___________� 1.0 micron ___________ ___________� 2.5 microns ___________ ___________� 10 microns ___________ ___________� 10 microns ___________ ___________

� GAS ANALYSISConstituent % By Volume Lb/HrH2O ___________ ___________O2 ___________ ___________N2 ___________ ___________SO2 ___________ ___________CO2 ___________ ___________Other (specify) CO, NOx, HCL, HF, HBr, etc.

___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________

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PROCESS INFORMATION: FOSSIL FUEL APPLICATIONS (Must be provided by the owner or architect/engineer.)

� PROCESS DESCRIPTIONProcess Description _______________________________________________________________________________________________________

Boiler Type _______________________________ Boiler Manufacturer & Model _______________________ Number of Units _______________

Boiler Rating (MW-net) _______________________________________ Boiler Rating (MW-gross) _______________________________________

Fuel Type & Feed Rate ________________________________________ Heat Input (mmBtu/Hr) ________________________________________

Process Output - Continuous or Batch - Peak Output - Design Output(circle one) ________________________________ ____________________________________________

Upstream Air Pollution Control Devices (Include Details) __________________________________________________________________________

________________________________________________________________________________________________________________________

________________________________________________________________________________________________________________________

� WATER SOURCEQuantity Available (gpm)________________________________________________________________________________________________________________________

Quality Available - Chloride Concentration (ppm) - Suspended Solids - pH - Other________________________ __________________ ____________________ ___________________

WET ELECTROSTATIC PRECIPITATOR SIZING & STRUCTURAL DESIGN CRITERIA (Choose either English Units or System International Units)

� SIZING CRITERIA (English Units)Gas Volume (acfm) Mass Flow (lb/hr) Gas (Temp. °F)________________________________ ________________________________ _________________________________

Gas Pressure (in. w.g.)- Normal Operating - positive - Normal Operating - negative - Surge Pressure - negative - Surge Pressure - positive________________________ ________________________ ________________________ ______________________

PM Inlet Loading (gr/acf) PM Inlet Loading (gr/dscf) PM Inlet Loading (lb/mmBtu) PM Inlet Loading (lb/hr)________________________ ________________________ ________________________ ______________________

PM Outlet Emissions (gr/acf) PM Outlet Emissions (gr/dscf) PM Outlet Emissions (lb/mmBtu) PM Outlet Emissions (lb/hr)________________________ ________________________ ________________________ ______________________

SO3 (equiv) Inlet Loading SO3 (equiv) Inlet loading SO3 (equiv) Inlet loading SO3 (equiv) Inlet loading (ppmv) (ppmvd) (lb/mmBtu) (lb/hr) ________________________ ________________________ ________________________ ______________________

SO3 (equiv) Outlet Emissions SO3 (equiv) Outlet Emissions SO3 (equiv) Outlet Emissions SO3 (equiv) Outlet Emission (ppmv) (ppmvd) (lb/mmBtu) (lb/hr) ________________________ ________________________ ________________________ ______________________

Droplet Carryover (lb/hr) Droplet Carryover (lb/mmBtu) Droplet Carryover (gr/dscf) Droplet Carryover (gr/acf) ________________________ ________________________ ________________________ ______________________

Opacity @ ____________ Stack Exit Diameter (ft.) _________________

� POLLUTANT ANALYSISMax. Value Min. Value Design Value

Constituent (% by Wt.) (% by Wt.) (% by Wt.)Ash __________ __________ __________Carbon __________ __________ __________Salt __________ __________ __________

(describe)H2SO4 __________ __________ __________FGD Mist __________ __________ __________

CarryoverOther __________ __________ __________

(describe)

� GAS ANALYSISConstituent % By Volume Lb/HrH2O ___________ ___________N2 ___________ ___________CO2 ___________ ___________O2 ___________ ___________SO2 ___________ ___________Other (specify) CO, NOx, HCL, HF, HBr

___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________Other (specify) ___________ ___________

� PARTICLE SIZE DISTRIBUTION (Suspended Solids and Aerosols)

Diameter % Undersize Reference(Microns) (% of Total) Test Method� 0.5 micron ___________ ___________� 1.0 micron ___________ ___________� 2.5 microns ___________ ___________� 10 microns ___________ ___________� 10 microns ___________ ___________

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WET ELECTROSTATIC PRECIPITATOR SIZING & STRUCTURAL DESIGN CRITERIA (continued)

� STRUCTURAL DESIGN CRITERIA (English Units)Gas Temperature (°F) - Normal Operating - Excursion (1 Hr)

_________________________ _________________________

Gas Pressure (in. w.c., static)- Normal Operating - positive - Normal Operating - negative - Surge Pressure - negative - Surge Pressure - positive________________________ ________________________ ________________________ ______________________

Casing Design - positive Casing Design - negative Casing Material Type_____________________________________ _____________________________________ _____________________________________

Site elevation (ft. above sea level) Standard Barometric Pressure (in. Hg) Standard Temperature (°F)_____________________________________ _____________________________________ _____________________________________

Design ambient temperature - Max (°F) Design ambient temperature - Min (°F)_____________________________________ _____________________________________

� BUILDING CODEAccess Live Load (lb/ft2) Roof Load (lb/ft2) Seismic Design Criteria_____________________________________ _____________________________________ _____________________________________

Snow Load (lb/ft2) Wind Load (lb/ft2)_____________________________________ _____________________________________ _____________________________________

� SIZING CRITERIA (System International Units) �

Gas Volume (m3/hr) Mass Flow (kg/hr) Gas Temperature – (°C) - Normal - Excursion (1 hr)_______________________ _______________________ _________________ __________________

Gas Pressure (mm w.c., static)- Normal Operating - positive - Normal Operating - negative - Surge Pressure - negative - Surge Pressure - positive________________________ ________________________ ________________________ ______________________

PM Inlet Loading PM Inlet Loading PM Inlet Loading (mg/Nm3, wet) (mg/Nm3, dry) (kg/hr)________________________ ________________________ ________________________

PM Outlet Emissions PM Outlet Emissions PM Outlet Emissions (mg/Nm3, wet) (mg/Nm3, dry) (kg/hr)________________________ ________________________ ________________________

SO3 (equiv) Inlet Loading SO3 (equiv) Inlet loading SO3 (equiv) Inlet loading(ppmv) (ppmvd) (kg/hr)________________________ ________________________ ________________________

SO3 (equiv) Outlet Emissions SO3 (equiv) Outlet Emissions SO3 (equiv) Outlet Emissions (ppmv) (ppmvd) (kg/hr)________________________ ________________________ ________________________

Droplet Carryover Droplet Carryover (mg/Nm3, wet) (mg/Nm3, dry)________________________ ________________________

Opacity @ ____________ Stack Exit Diameter (meters) _________________

� STRUCTURAL DESIGN CRITERIA (System International Units) �

Gas Temperature (°C) - Normal Operating - Excursion (1 Hr)_________________________ _________________________

Gas Pressure (mm w.c., static)- Normal Operating - positive - Normal Operating - negative - Surge Pressure - negative - Surge Pressure - positive________________________ ________________________ ________________________ ______________________

Casing Design - positive Casing Design - negative Casing Material Type_____________________________________ _____________________________________ _____________________________________

Site elevation (m above sea level) Standard Barometric Pressure (mbar, mm Hg) Standard Temperature (°C)_____________________________________ _____________________________________ _____________________________________

Design ambient temperature - Max (°C) Design ambient temperature - Min (°C)_____________________________________ _____________________________________

� BUILDING CODEAccess Live Load (kg/m2) Roof Load (kg/m2) Seismic Design Criteria_____________________________________ _____________________________________ _____________________________________

Snow Load (kg/m2) Wind Load (kg/m2)_____________________________________ _____________________________________ _____________________________________

15

FORM 2: BID EVALUATION INFORMATION – Sheet 1 of 9

Bidder #1: _________________________________________________ Bidder #2: ___________________________________________________

Bidder #3: _________________________________________________

� OPERATING & PERFORMANCE DATARequired Bidder #1 Bidder #2 Bidder #3

Design Basis - English Units

Gas Volume (acfm)

Mass Flow (lb/hr)

Gas Temperature (°F)

Gas Pressure (in w.c.)

PM Inlet Dust Loading (lb/hr, lb/mmBtu, gr/dscf, gr/acf)

H2SO4 / SO3 Inlet Loading (lb/hr, ppmv, ppmvd, lb/mmBtu)

Other

Other

Other

Performance Data - English Units

PM Outlet Emissions (lb/hr, lb/mmBtu, gr/dscf, gr/acf)

H2SO4 / SO3 Outlet Emissions (lb/hr, lb/mmBtu, ppmv, ppmvd)

Other

Other

Other

Guaranteed Opacity % (stack diameter)

Treatment Time (sec)

Pressure Drop – WESP only (in w.c.)

Pressure Drop – WESP � Duct (in w.c.)

Make-Up Water (gpm)

Blow-Down Liquid (gpm)

Power Consumption (kW)

Other Consumables

Reference Test Methods

Design Basis - SI Units �

Gas Volume (m3/hr)

Mass Flow (kg/hr)

Gas Temperature (°C)

Gas Pressure (mm w.c.)

PM Inlet Dust Loading (mg/Nm3, wet; mg/Nm3, dry; kg/hr)

H2SO4 / SO3 Inlet Loading (ppmv, ppmvd, kg/hr)

Other

Other

Other

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� OPERATING & PERFORMANCE DATA (continued)Required Bidder #1 Bidder #2 Bidder #3

Performance Data - SI Units �

PM Outlet Emissions (mg/Nm3-wet, mg/Nm3-dry, kg/hr)

H2SO4 / SO3 Outlet Emissions (ppmv, ppmvd, kg/hr)

Other

Other

Other

Inlet gas velocity

Guaranteed Opacity, % (stack dia.)

Treatment Time (sec)

Pressure Drop – WESP only (mm w.c. )

Pressure Drop – WESP � Duct (mm w.c. )

Make-Up Water (lpm)

Blow-Down Liquid (lpm)

Power Consumption (kW)

Other Consumables

� PRECIPITATOR ARRANGEMENTRequired Bidder #1 Bidder #2 Bidder #3

No. of Precipitators

Bottom /Pan

No. / Configuration per Chamber (L � W)

No. / Mechanical Field

Material / Plate Thickness

No. of drains

Diameter of Drains (inches)

Horizontal Precipitators

No. of Chambers/Precipitator

No. of Mechanical Fields/Precipitator

No. of Electrical Fields/Precipitator

No. of Bus Sections/Precipitator

No. of Gas Passages/Chamber

Width of Gas Passages (inches or meters)

Field 1

Field 2

Field 3

Field 4

Height of Collecting Electrode/Mech. Field

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� PRECIPITATOR ARRANGEMENT (continued)Required Bidder #1 Bidder #2 Bidder #3

Length of Collecting Electrode/Mech. Field

Field 1

Field 2

Field 3

Field 4

Width of Precipitator (column centers)

Length of Precipitator (column centers excluding transition nozzles)

Height of Precipitator (excluding weather enclosure)

Specific Collecting Area (SCA) – ft2/1000 acfm

Current Density (mA/ft2)

Tubular Precipitators

No. of Tubes

Shape of Tube – (square, round, hexagonal)

Tube dimensions

Field 1

Field 2

Field 3

Field 4

Up-flow or Down-flow

No. of Mechanical Fields in Series /Precipitator

Length of Collecting Field / Mechanical field

Field 1

Field 2

Field 3

Field 4

No. of Electrical Fields in Series/Precipitator

No. of Bus Sections

Width of Precipitator (Column Centers)

Height of Precipitator ExcludingTransitions

Height of Precipitator with Transitions

Depth of Precipitator (Column Centers)

Specific Collection Area (SCA) – ft2/1000 acfm

Current Density (mA/ft2)

� PRECIPITATOR DESIGNRequired Bidder #1 Bidder #2 Bidder #3

Casing / Transitions (Nozzles)

Casing Material / Plate Thickness

Transition Nozzle Material / Plate Thickness

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� PRECIPITATOR DESIGN (continued)Required Bidder #1 Bidder #2 Bidder #3

Gas Distribution Device Type

Inlet transition – quantity

Inlet transition – type

Inlet transition – material

Outlet transition – quanity

Outlet transition – type

Outlet transition – material

Casing (Hot) Roof

Roof Material / Plate Thickness

No. of Insulator Compartments

Insulator Compt. Material / Plate Thickness

Insulator Compt. Design

Penthouse

Penthouse Wall Material / Plate Thickness (ft)

Penthouse Wall Material / Plate Thickness (m)

Penthouse Roof Material / Plate Thickness (ft)

Penthouse Roof Material / Plate Thickness (m)

Penthouse. Height (ft)

Penthouse. Height (m)

Insulated Yes / No

Weather Enclosure

Weather Enclosure Wall Material / Thickness (ft)

Weather Enclosure Wall Material / Thickness (m)

Weather Enclosure Roof Material / Thickness (ft)

Weather Enclosure Roof Material / Thickness (m)

Weather Enclosure Height (ft)

Weather Enclosure Height (m)

Insulated Yes / No

� COLLECTING SYSTEMRequired Bidder #1 Bidder #2 Bidder #3

Type of Collecting Electrode- Plate or Tubular

No. of Collecting Electrode Plates/Tubes

Material / Thickness (ft)

Material / Thickness (m)

Effective Height (ft) � Effective Length (ft)

Effective Height (m) � Effective Length (m)

Effective Length (ft) � Diameter (in)

Effective Length (m) � Diameter (m)

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� COLLECTING SYSTEM (continued)Required Bidder #1 Bidder #2 Bidder #3

Total Surface Area (ft2 or m2)

Method of Wash (spray, irrigation, condensing)

� DISCHARGE ELECTRODESRequired Bidder #1 Bidder #2 Bidder #3

No. of Discharge Electrodes

Discharge Electrode Type & Shape

Discharge Electrode Material / Diameter (ft)

Discharge Electrode Material / Diameter (m)

Length of Discharge Electrode

Total Length of Discharge Electrodes

Distance between Discharge Electrodes

No. Suspension Insulators / H.V. Frame

H.V. Frame Total/Field

H.V. Frame Total Precipitator

Method of H.V. System Stabilization

Support Insulator Material

� EXTERNAL HIGH VOLTAGE SYSTEMRequired Bidder #1 Bidder #2 Bidder #3

H.V. Bus Material Description / Type

Thickness or Size

Bus Duct Material / Thickness (ft)

Diameter (ft)

Bus Duct Material / Thickness (m)

Diameter (m)

Disconnect Switch Type / No. Per T-R

� HIGH VOLTAGE SYSTEMRequired Bidder #1 Bidder #2 Bidder #3

Transformer-Rectifiers (T-R)

Manufacturer

No. of Phases

Number No. in Direction of Gas Flow

Number No. across Gas flow

Number Total / Precipitator

Number of Bus Sections

Rating (kV avg./ mA avg./ AAC) Field 1

Rating (kV avg./ mA avg./ ACC) Field 2



T-R Primary Voltage (VAC)

Current Form Factor

Voltage Form Factor

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� HIGH VOLTAGE SYSTEM (continued)Required Bidder #1 Bidder #2 Bidder #3

Total Surface Area (ft2 or m2)

Wave Form Frequency (Hz)

Impedance (Ohms)

Type Insulating Fluid

Qty. Insulating Fluid

Max. Operating Temperature

Containment Tank Capacity

High Frequency Power Supply

Current Limiting Reactors (CLR)

Manufacturer

No. of Current Limiting Reactors

Size of CLR Cabinets

CLR Design Percent Impedance, %

CLR Primary Voltage, VAC

CLR Primary Current , AAC

Automatic Voltage Controllers (AVC)

Manufacturer

No. of Automatic Voltage Controllers

Controller Cabinet Size

Controller Primary Voltage, VAC

� POWERRequired Bidder #1 Bidder #2 Bidder #3

Connected Power Load

High Voltage System Connected Power, kVA

Total Connected Power, kVA

Operating Power Consumption

High Voltage System (kW)

HVAC (kW)

Insulator Purge Blowers (kW)

Insulator Heaters (kW)

Lighting (kW)

Pumps (kW)

Miscellaneous (kW)

Total Operating Power Consumption (kW)

� POWER DISTRIBUTIONRequired Bidder #1 Bidder #2 Bidder #3

Power Dist. Panels

Manufacturer

Panels / Precipitator

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� POWER DISTRIBUTION (continued)Required Bidder #1 Bidder #2 Bidder #3

Max. Rated Current

Short Circuit Withstand Current

Interrupt Rating of Breakers

Voltage Rating

NEMA Rating of Enclosure

Motor Control Centers

Manufacturer

No. Sections, Total

Max. Rated Current

Short Circuit Withstand Current

Interrupt Rating of Breakers

Voltage Rating

NEMA Rating of Enclosure

� INSULATOR HEATING & PURGE AIRRequired Bidder #1 Bidder #2 Bidder #3

Heater No. / Precipitator

No. / Operating / No. Space

Type

Size Each (kW)

Voltage/Current

Blower / Motor No. / Precipitator

Rated Flow (cfm) @ Max. RPM

Rated Flow (m3/hr) @ Max. RPM

Air Flow per Insulator

Max. Static Press. (in. H20 or mbar)

Voltage / Current / Phase

Horsepower

Filter Type

� PRECIPITATOR ACCESSRequired Bidder #1 Bidder #2 Bidder #3

Access Doors Penthouse (Cold) Roof No.

Size

Casing (Hot) Roof No.

Size

Casing No.

Size

Bottom Pans No./Pan

Size

Inlet Transition (Nozzle) No.

Size

Outlet Transition (Nozzle) No.

Size

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� PRECIPITATOR ACCESS (continued)Required Bidder #1 Bidder #2 Bidder #3

Key Interlocks Manufacturer

Access Door Locks Yes / No

Control Circ. Brkr. Disconnect Yes / No

T-R Ground Switch Locks Yes / No

� HEAT INSULATION & LAGGINGRequired Bidder #1 Bidder #2 Bidder #3

Piping Yes / No

Casing Yes / No

Penthouse Yes / No

Weather / Enclosure Yes / No

Purge Air Duct Yes / No

Other Yes / No

� AUXILIARY EQUIPMENTRequired Bidder #1 Bidder #2 Bidder #3

Ductwork

Material / Thickness

Turning Vane Material / Thickness

Expansion Joints

Quantity

Material

Description

Slide Plate

Quantity

Type

Manufacturer

T-R Removal System

Type

Type Trolley Operator

No. Hoists

Type Hoists

Hoist Horsepower

Voltage / Current

Capacity (tons)

Capacity (kg)

Vent Fans

No. / Precipitator

Type

Manufacturer

Motor Horsepower

Voltage / Current

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� WASH SYSTEMRequired Bidder #1 Bidder #2 Bidder #3

Wash Pumps

No. / Precipitator.

Material

Wash Tanks

No. / Precipitator

Material

Wash Piping

Material

Location of wash headers

Irrigation System Type

Continuous / Intermittent / Condensing

Single Pass / Recycle

pH Control / Treatment

Other

Other

� EQUIPMENT WEIGHT (TONS)Required Bidder #1 Bidder #2 Bidder #3

Structural Steel, Platforms, Ladders etc.

Casings / Bottom Pans / Insulator Compartments or Penthouse /Weather Enclosure

Inlet & Outlet Transition Nozzles

Internals

Auxiliaries

Other

TOTAL

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NOTES AND ADDITIONAL INFORMATION

MembersADA Environmental Solutions, LLCALSTOM PowerAmetek Process InstrumentsAnguil Environmental Systems, Inc.Argillon LLCBabcock & WilcoxBabcock Power Inc.BASFBelco Technologies CorporationBlack & VeatchBurns & McDonnellChemical Lime CompanyCormetech, Inc.CRI Catalyst CompanyCSM Worldwide, Inc.Dürr Environmental & Energy SystemsEnvirolutions SystemsEpcon Industrial SystemsForney CorporationFuel TechGE Energy ServicesHaldor Topsoe, Inc.Hamon Research-Cottrell, Inc.Hitachi Power Systems America, Ltd.Horiba Instruments, Inc.Johnson Matthey Stationary Source Emissions ControlLodge-Cottrell, Inc.Marsulex Environmental TechnologiesMitsubishi Heavy Industries, America, Inc.,

Environmental Systems DivisionMitsubishi Power Systems, Inc.Mobotec USA, Inc.NORIT Americas Inc.Ohio LumexPowerspan CorporationSargent & Lundy, LLCSICK Maihak, Inc.Siemens Environmental Systems and ServicesSpectrum Systems, Inc.Stone & Webster Engineering CorporationSüd-Chemie, Inc.Tekran Instruments Corp.Teledyne Monitor LabsThermo Electron CorporationWashington Group International, Inc.WorleyParsons

Associate MembersAdvanced Electron BeamsAirflow Sciences CorporationAirgas, Inc.Andover Technology PartnersApplied Ceramics, Inc.AspectricsAvogadro Environmental CorporationBaldwin Environmental, Inc.Beta Analytic Inc.Cabot Superior MicroPowdersCalifornia Analytical InstrumentsCarmeuse North AmericaCasey Industrial, Inc.CEM Service Group, Inc.Chemco Systems LPCorning, IncorporatedDekoron/Unitherm, Inc.ECOM America Ltd.Energy Services ConsultantsEnvironmental Systems CorporationEvergreen EnergyFFE MineralsGraymont Inc.GT&S, Inc.Krishnan & AssociatesLinde Gas, LLCM&C Products Analysis Technology, Inc.Matheson Trigas, Inc.McIlvaine CompanyMidwesco Filter Resources, Inc.Millennium Chemicals, A Lyondell CompanyMKS InstrumentsNational Specialty GasesNWL TransformersParker Hannifin, Parflex DivisionPerma PurePhiladelphia Mixing SolutionsPotash Corporation of Saskatchewan, Inc.Praxair, Inc.PSP IndustriesRed Ball Technical Gas ServicesRestek CorporationScott Specialty Gases, Inc.SCR-TechSolvay Chemicals, Inc.Spectra Gases, Inc.Structural Steel Services, Inc.Terra Environmental TechnologiesTesto, Inc.Thermon Manufacturing Co.TLT Babcock Inc.Universal Analyzers, Inc.VIG Industries, Inc.VIM Technologies, Inc.Zachry Construction Corporation

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BID SPECIFICATION INFORMATION REQUIREMENTS

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