Eskom Holdings SOC LimitedContract number ______
project & contract title
APPENDIXG – Louver Damper Specification
The information provided in this Appendix is for one FFP unit only.
1.GENERAL–LOUVERDAMPERS
Table 1: Supply Quantities
Description / Per FFPNumberofFFPInletLouverDampers / 10
NumberofFFPs / 2
Table 2 Operating and Design, Pressure and Temperatures
Description / Unit / FFP Compartment Inlet DampersNormalOperatingPressure / kPa(g) / -2.2
+CDP(ContinuousDesignPressure) / kPa(g) / 1.7
-CDP(ContinuousDesignPressure) / kPa(g) / -7.2
+TDP(TransientDesignPressure) / kPa(g) / 1.7
-TDP(TransientDesignPressure) / kPa(g) / -8.7
NormalOperatingTemperature / C / 157
ContinuousDesignTemperature / C / 174
TransientDesignTemperature / C / 383
Pressurelossacrossdamper / kPa(g) / As per Contractor
TransientDesignDifferential / kPa(g) / As per Contractor
ExpectedOperatingDifferential / kPa(g) / As per Contractor
Transienttemperatureisdefinedasfluegasflowthroughthe systematthespecifiedtemperatureforthirty(30)minutes.
2.TYPICALPARTICLESIZEDISTRIBUTIONTOFFP
ParticleSize(Microns) / Wt%80.0
40to50
20to40
10orless / 50.00%
20.00%
20.00%
10.00%
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Eskom Holdings SOC LimitedContract number ______
project & contract title
- Design Conditions Summary
Table 3: Design Conditions
Description / Units / FFP CompartmentInlet LouverDampers
TotalMassFlow(w/oSolids) / kg/hr / 1,626,133
TotalSolids / kg/hr / 39,929
Temperature / oC / 157
Pressure / kPa(g) / -2.2
MolecularWeight / kg/kgmol / 29.60
TotalVolumetricFlow(w/oSolids) / Am3/s / 667.4
N2 / vol% / 73.5
O2 / vol% / 6.2
CO2 / vol% / 12.1
H2O / vol% / 7.3
SO2 / ppmvw / 1,137
SO3 / ppmvw / 3.7
SO2 / kg/hr / 4,000
SO2 / ppmdv / 1,226
SO3 / kg/hr / 16
SO3 / ppmdv / 3.9
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Eskom Holdings SOC LimitedContract number ______
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4.Design Information Data Sheets
4.1Fabric Filter Plant Compartment Inlet Damper
Provide information for Compartment Inlet Dampers for one FFP.
FFPCOMPARTMENTINLETLOUVERDAMPER- DESIGNINFORMATIONDATA SHEET1of2Reference(and/orPurchaseOrderLineItem)
Location/Description / FFP Compartment Inlet
Quantity / 20
DamperTagNumber(s) / 06NQ11S010, 06NQ11S020,06NQ11S030, 06NQ11S040,06NQ11S050, 06NQ12S010,06NQ12S020,06NQ12S030,06NQ12S040,06NQ12S050,06NQ21S010,06NQ21S020,06NQ21S030,06NQ21S040,06NQ21S050,06NQ22S010,06NQ22S020,06NQ22S030,06NQ22S040,06NQ22S050
TypeDamper:(Singlelouver,Doublelouver) / SingleLouver
BladeConfiguration(Opposedlouver,parallel louver,butterfly) / Parallel
Service:(Control,Isolation) / Isolation
OperatingPressure(kPa) / Table 2
DesignPressure–Sustained(kPa) / Table 2
DesignPressure–Transient(kPa) / Table 2
MaxPressureDropAcrossOpenDamper(kPa) / As per Contractor
OperatingTemperature,ºC / Table 2
DesignTemperature,ºC / Table 2
Air/GasFlowperDamper(wo/Ash),kg/hr / Table 3
FlueGas/Airdensity(wo/Ash),kg/m3 / 0.663
CorrosiveorAbrasivePropertiesofgasstream / Table 3
AshFlowperDamper,kg/hr / 3,933
DuctOrientation(HorizontalorVertical) / Horizontal
InsideDimensions / As per Contractor
PerpendiculartoBlade(s)–Height / 2300mm
ParalleltoBlade--Width(1) / 3800mm
AllowableLeakage(2)(%)-- / As per Contractor
TypeofActuation(3): Electric--(V/PH/HZ)
OrPneumatic(4)--(airpressurerange) / Pneumatic(414–552kPaG)
Actuator(DirectorIndirect)(Seenote5) / As per Contractor
AvailableActuatorPower(kPaG) / 414to552
MaximumTimetoFullyOpenorCloseDamper / As per Contractor
DamperFailurePosition(Open/Closed/InPlace) / InPlace
Notes:
(1)Foralldampers,thisdimensionisthewidthatthespecificdamperlocation,assuming parallelbladesmountedhorizontally.Contractorto adviseofrecommendedparallelblade orientation.
(2)Leakageistobebasedonfullloadflowatoperatingconditions.
(3)Electricorpneumaticoperatorsasspecified.
(4)Oilfreeairtobeprovided.Contractortosupplyairfilterandregulator.
(5)DirectdrivesareNOTrecommendedfordamperslocatedincloseproximityto pulverisersorfanswherevibrationscouldcausedamagetothedrivecomponents.
(6)Limitswitches:Contractortoprovide.
FFPCOMPARTMENTINLETLOUVERDAMPER- DESIGNINFORMATIONDATA SHEET2of2MaterialsofConstruction:
ExternalFramework/StructuralComponents / ASTMA36,ASTMA572,orsimilarcarbonsteel.
FrameworkExposedtoFlueGas / ASTMA36,ASTMA572,orsimilarcarbon steel.
Blades / ASTMA36,ASTMA572,orsimilarcarbon steel.
Seals / ASTMA-36,ASTMA572,orsimilarcarbon steel.
DownstreamElementofDoubleLouver
ExternalFramework/StructuralComponents / N/A
FrameworkExposedtoFlueGas / N/A
Blades / N/A
Seals / N/A
PrimerforExternalFrameComponents / FinishPaintRequired
SealAirSystemRequired(Yes/No) / No
SealAirSystemtobeShared(Yes/No) / N/A
Acceptableforbladewidthtoexceeddamperframedepth?(YesorNo) / Yes
NumberofSealAirBlowersRequiredper
DoubleLouverDamperorDamperGroup / N/A
SealAirHeaterRequired(Yes/No) / N/A
Minimum/MaximumAmbientAirTemperature(°C) / -10 to 40
A. Priceforfreighttoportofexportorother
destination / Include
B. Pricebreakdownforvariousdamper components oroptionalequipment / N/A
C. Exportpackagingonperlotbasis / N/A
Comments:
Dampersmusthaveameanstophysicallylockoutthedampersandpreventmovement.
Alllinkagesoperatebelowthetopframeworkofthedampertoavoidinterferenceissues.
Part C3: Scope of WorkAppendix GC3.1 ECC3 Employer’s Works Information
Eskom Holdings SOC LimitedContract number ______
project & contract title
To be completed by Contractor and submitted to the Employer as per VDSS.
FFPCOMPARTMENT INLET –LOUVER DAMPER CONTRACTORDATASHEET 1 of 2DATE:
CONTRACTOR'SQUOTENO.
EMPLOYER REFERENCE NO.
EMPLOYER DAMPER TAG NUMBER
MANUFACTURER:
1. / DAMPER LOCATION
2. / SIZE
3. / QUANTITY
4. / TYPE(SINGLE LOUVER/DOUBLE LOUVER)
5. / BLADE CONFIGURATION -OPPOSEDLOUVER, PARALLEL LOUVER, BUTTERFLY
6. / SERVICE (TSO, CONTROL)
7. / ORIENTATION-HORIZONTALORVERTICAL (Perpendicular to flowdirection or duct orientation)
8. / DESIGN PRESSURE
9. / DESIGNTEMPERATURE
10. / AIR/GAS FLOW PER DAMPER, MLB/HR
11. / FRAME SIZE (INSIDE DIMENSIONS FACETO FACE)
A. / WIDTH (PARALLEL TOBLADE SHAFTS)
B. / HEIGHT (PERPENDICULARTO BLADE SHAFTS)
12. / BLADE SPAN
13. / BLADE THICKNESS/MATERIAL
14. / NO. OF BLADES
15. / DRIVE SHAFT MATERIAL/SIZE/EXTENSION
16. / SPECIAL PACKING GLAND REQUIREMENTS
17. / LINKAGE MATERIAL/OTHER SPECIAL LINKAGE DESIGN CONSIDERATIONS
18. / BLADE SEALMATERIAL
19. / BEARINGS INFORMATION
20. / NUMBER OF SHIPPING PIECES PER DAMPER
21. / FINISH
22. / MAXIMUM TIMETO FULLY OPEN OR CLOSE DAMPER
23. / PRESSURE DROP ACROSS FULLY OPEN DAMPER ATOPERATING CONDITIONS
24. / GUARANTEED LEAKAGE RATE ATOPERATING CONDITIONS:
A. / WITH SEAL AIR FAN
B. / WITHOUT SEAL AIR FAN
25. / DRIVE SYSTEM:
A. / OPERATOR MAKE/MODEL MOTOR SIZE
B. / DRIVE OUTPUT(STALLTORQUE)
C. / MINIMUM REQUIRED TORQUE
D. / MINIMUM FORCE REQUIRED TO MOVEBLADE UNDER THE DESIGN CONDITIONS
E. / DRIVE TYPE (DIRECTORINDIRECT)
F. / FOR PNEUMATIC ACTUATOR – SPECIFY AIR PRESSURE REQUIRED TO OPEN/CLOSE DAMPER / I
FFP COMPARTMENT INLET – LOUVERDAMPER CONTRACTORDATASHEET 2 of 2
REFERENCE (AND/ORPURCH. ORDER LINE ITEM)
26 / DAMPER TAG NUMBER(S)
27 / MATERIALS OF CONSTRUCTION:
SINGLE LOUVER OR UPSTREAM ELEMENT OF DOUBLE LOUVER
A. / EXTERNAL FRAMEWORK/STRUCTURAL COMPONENTS
B. / FRAMEWORK EXPOSED TO FLUE GAS
C. / BLADES
D. / SEALS
28. / DOWNSTREAM ELEMENTOF DOUBLE LOUVER
A. / EXTERNAL FRAMEWORK/STRUCTURAL COMPONENTS
B. / FRAMEWORK EXPOSED TO FLUE GAS
C. / BLADES
D. / SEALS
29. / PRIMER FOREXTERNAL FRAME COMPONENTS
30. / SEAL AIR SYSTEM(IF REQUIRED)
A. / SEAL AIR SYSTEMPRESSURE
B. / SEAL AIR FLOW PER DAMPER
C. / NUMBER OF SEAL AIR BLOWERS REQUIRED PER DOUBLE LOUVER DAMPER OR DAMPER GROUP
D. / SEAL AIR HEATER POWERRATING
E. / SEAL AIR BLOWER MAKE/MODEL
F. / SEAL AIR BLOWER HORSEPOWER
31. / PRICE FOR FREIGHTTO PORT OF EXPORT OR OTHER DESTINATION
32. / PRICE BREAKDOWN FOR VARIOUS DAMPER COMPONENTS OR OPTIONAL EQUIPMENT
33. / EXPORTPACKAGING ON PER LOT BASIS
SUMMARY
34. / NETPRICE/EACH
35. / WERE ANY EXCEPTIONSTAKEN TOTHEEMPLOYERSPECIFICATION?
36. / ESTIMATEDWEIGHTOFTHE DAMPER ASSEMBLY INCLUDING ALL ACCESSORYEQUIPMENT
COMMENTS/EXCEPTIONS:
Part C3: Scope of WorkAppendix GC3.1 ECC3 Employer’s Works Information