WIMES 7.01
Page 24
APPENDIX C - DATA SHEET
DECANTER CENTRIFUGE FOR SLUDGE THICKENING AND DE-WATERING
PROJECT TITLE (P)
PROJECT NUMBER (P)
PROJECT LOCATION (P)
CENTRIFUGE SUPPLIER
(P/S)
TAG NO/ASSET CODE (P)
DOCUMENT REFERENCE
(P)
REVISION (P)
DATE (P)
REF DRAWINGS
(included/not included) (P)
Key
* - Indicates Purchaser’s default requirement
4.0 FEED SLUDGE
CHARACTERISTICS
AND
FLOCCULANT
2.0 GENERAL
1
2.1 General
5
Number of Identical
Centrifuges Reqd. (P)
3.0 OPERATING ENVIRONMENT AND SITE
DETAILS
1
4
Type of Installation () (P/S)
Mobile
Semi-mobile (i.e. on
stilts/jacks)
Permanent
Possible Operating Environment(s) (P)
Location(s) ()
Inland
Coastal
Inside
outside
Other (specify)
Hazardous Area Classification(s) ()
None
Zone 1
Zone 2
EMC Environment(s) ()
Class B - light industrial
Class A - industrial
Ambient Air Temp/RH
(-10°C-40°C/< 95%*) (P)
Special Environmental Hazards (P)
5
References For Further Information (P)
2
3
ISSUE 4
2
3
4
Feed Sludge(s) (P)
Type
Raw/digested
Proportions (By DS) (P)
%
Primary
SAS
Humus
Other (specify)
Feed Sludge Screening (P)
Screened sludge (Y/N)
Aperture
size/type
(e.g. 6 mm slot)
Solids Details(P)
Content
(min-max)
(wt %)
Particle size range (µm)
Grit content (high/low)
Rag content (high/low)
Feed Sludge Properties (P) (If Known)
Age (septicity)
pH
Vapour
pressure
(bar abs)
Salinity (Peak/average)
(mg Cl/l)
Newtonian/
non-Newtonian
Kinematic viscosity (cSt)
Density (kg/m3)
Polythickened (Y/N)
Temperature (inlet) (°C)
Min
Max
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WIMES 7.01
4
5
Page 25
Adverse or Hazardous Properties () (P)
Toxic
Corrosive
Abrasive
Odorous
Other (specify)
Flocculant Details (P/S)
5.3 Process Performance
1
2
3
6
7
Details of Other Chemicals Added to the
Feed Sludge (P)
Other
Sludge/Flocculant
(If Known) (P)
Properties
5.0 PERFORMANCE SPECIFICATION
5.1 General
1
Design Life (Years) (P)
5.2 Duty, Operating Speeds and Absorbed
Power
1
2
2
3
4
5
Duty/Utilisation (P)
Hrs per day
Days per week
Method of Bowl Speed Variation () (P/S)
Fixed speed motor with
variable drive belt pulley
ratios
Variable speed motor
Hydraulic motor
Other (specify)
Maximum Bowl Speed
(rpm) (P/S)
Method of Scroll Conveyor Speed
Variation () (P/S)
Fixed speed motor with
variable drive belt pulley
ratios
Variable speed motor
Hydraulic motor
Other (specify)
Bowl/Scroll Differential
Speed Range (rpm) (S)
Maximum
Absorbed
Power (kW) (S)
ISSUE 4
4
5
Thickened/De-watered Sludge Solids
Content (wt %) (P)
Required
range
(min-max)
Solids Recovery (P)
Minimum required
Centrate Solids Content (ppm ss) (P)
Maximum allowable
Sludge Throughput (m3/hr) (P/S)
Required
range
(min-max) (P)
Maximum
achievable
(S)
Flocculant Dosing Rate (kg/tds)
Maximum required (S)
5.4 Noise and Vibration
5.4.1 Noise
1
2
Expected Noise Levels
(dB (A) at 1 m) (S)
Acoustic
Hoods/
Cladding Required (Y/N)
(S)
5.4.2 Vibration
2
1st Critical Speed (% of
Maximum Bowl Speed)
(>130*) (P/S)
5.5 Life Cycle Costs
5.5.1 Energy Consumption
1
Specific Energy Consumption (P/S)
Process Conditions (P)
Sludge
throughput
(m3/hr)
Feed
sludge
solids
content (wt %)
Thickened/de-watered
sludge solids content
(wt %)
Energy
Consumption
(kWhrs/tds) (S)
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WIMES 7.01
5.5.2 Service Lives and Costs of Components
1
Expected Service Lives of Components
Component (specify) (P) Life (x 103 hrs) (S)
Page 26
6.1.6 Condition Monitoring
1
2
2
Costs of Components (£)/Time Required
to Replace Components (hrs) (S)
Component (specify)
Cost
Time
6.1.7 Information Plate
1
6.0 DESIGN SPECIFICATION
6.1 General
6.1.2 Weights and Lifting Arrangements
1
2
Weights (kg) (S)
Overall weight
Maximum maintenance
lift
Maximum erection lift
Details of Any Special Lifting Accessories
Required
for
Centrifuge
Removal/
Installation (S)
6.1.4 External Corrosion Protection
5
Coating
Specification
(WIMES 4.01*) (P)
6.1.5 Guarding
6
Timed Interlock or Back
EMF Switches Required
(Y/N) (P)
ISSUE 4
Additional Types of Condition Monitoring
Required/Provided () (P/S)
Bowl/scroll
differential
speed
Scroll conveyor torque
Bearing
lubricant
level/flow
Other (specify)
Sensor Fixing Arrangements (P)
Data Required/Provided on Information
Plate () (P/S)
Manufacturer
Date of manufacture
Centrifuge type
Serial number
Max. bowl speed (rpm)
G-force
Bowl diameter (mm)
Max. power input (kW)
Weight (kg)
Asset code
Other (specify)
6.1.9 LV Assembly and Associated Electrical
Installation (If Specified/Supplied)
1
2
LV Assembly Required/
Provided (Y/N) (P/S)
LV Assembly and Electrical Installation
Specification (WIMES 3.04*) (P)
6.1.10 Maintainability
2
2
Maintenance
Platform
Required (Y/N) (P)
Reference for Platform Specification (P)
6.1.11 O & M Manuals
1
Reference for Particular Specification (P)
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Page 27
6.3.2.4 Thickened/De-watered Sludge Discharge
Arrangements
6.2 Base Frame(s)
1
Material (P/S)
1
6.3 Casing and Connections
6.3.1 Casing
2
Material (P/S)
3
Sealing Arrangements (P/S)
4
Centrifuge to Operate
with an Odour Control
System (Y/N) (P)
2
3
6.3.2 Connections
6.3.2.1 General
1
4
Discharge Manifold Features Provided to
Allow Sludge Sampling () (S)
Inspection panel
Access panel
Sampling point
Other (specify)
Facilities Provided for Clearance of
Blockages (S)
Method
of
Removing
De-watered Sludge () (P/S)
Gravity
Pump
Screw/belt conveyor
Other (specify)
Divert Valve Required
(Y/N) (P)
Thickened/
Vibration Isolation Facilities Provided (S)
6.3.2.5 Washwater Provisions/Requirements
6.3.2.2 Feed
Arrangements
Sludge
&
Flocculant
Inlet
1
Inlet Pipe and liner Materials (P/S)
3
Inlet Pipe Bore and Method of Connection
to Fixed Pipework Installation () (P/S)
Nominal Bore (mm)
Flanged
connection
(specify PN rating)
Hose tail connection
1
6.3.2.3 Centrate Discharge Arrangements
1
2
Funnel/Stilling Box Features Provided to
Allow Centrate Sampling () (S)
Inspection panel
Access panel
Sampling point
Other (specify)
Discharge Pipe Details (P/S)
Nominal bore (mm)
Flange
specification
(e.g. PN 10)
ISSUE 4
2
Washwater Provisions/Requirements
Pressure Range (bar)
Available on site (P)
Required (S)
Flow Range (l/min)
Available on site (P)
Required (S)
Type(s)
Available on Site () (P)
Final effluent
Potable water
Required () (S)
Final effluent
Potable water
Actuated Valve Type () (P/S)
Full bore, ¼ turn
Solenoid
OCTOBER 2013
WIMES 7.01
6.4 Bowl
1
2
2
3
5
6
Dimensions of Cylindrical Section (S)
Internal diameter (mm)
Internal length (mm)
Dimensions of Conical Section (S)
Taper angle (°)
Length (mm)
Stepped Conical Section (S)
Provided (Y/N)
Number of steps
Material (P/S)
Method of Protecting Sludge Discharge
Ports Against Abrasive Wear () (P/S)
Replaceable
liner/
sleeve
(specify/state
material)
Wear resistant coating
(specify/state type)
Other (specify)
Method of Protecting Inner Surface of
Bowl Against Abrasive Wear () (P)
Longitudinal wear strips*
Replaceable liner/sleeve
(specify/state material)
Wear resistant coating
(specify/state type)
Other (specify)
Page 28
6.6 Bearings and Bearing Lubrication
6.6.2 Main Bearings
1
2
2
3
Bearing Details (S)
Manufacturer
Designation
Lubricant Details (P/S)
Oil/grease
Grade
Method of Bearing Lubrication () (P/S)
Manual re-greasing
Single point automatic
lubricators
Centralised
pumped
lubrication system
Minimum Capacity/Life of
Automatic
Lubricators
(cc/mths) (P/S)
6.6.3 Scroll Conveyor Bearings
1
2
2
Bearing Details (S)
Manufacturer
Designation
Lubricant Details (P/S)
Oil/grease
Grade
Method of Bearing Lubrication () (P/S)

Manual re-greasing
6.5 Scroll Conveyor
6.7 Drive Systems
1
Material (P/S)
2
Scroll Flights (S)
Pitch (mm)
Pitch reduces towards
discharge ports (Y/N)
Method of Protecting Distributor/Inlet Ports
Against Abrasive Wear () (P/S)
Replaceable
liner
/sleeve
(specify/state
material)
Wear resistant coating
(specify/state type)
Other (specify)
Method of Protecting Flight Tips and
Flanks Against Abrasive Wear () (P/S)
Replaceable
tiles
(specify/state material)
Wear resistant coating
(specify/state type)
Other (specify)
3
4
ISSUE 4
6.7.1 Bowl Drive
1
a
b
c
Type of Bowl Drive () (P/S)
Fixed speed electric
motor
Variable speed electric
motor
Variable speed hydraulic
motor
OCTOBER 2013
WIMES 7.01
6.7.1.1 Electric Motor (If Specified/Supplied)
1
2
3
Motor
Specification
(WIMES 3.03*) (P/S)
Method of Power Transmission From
Motor to Bowl () (P/S)
Belt and pulley
Belt and pulley with fluid
coupling
Direct coupling
Other (specify)
Method of Overload Protection () (P/S)
Current monitoring
Torque monitoring
Other (specify)
6.7.1.2 Hydraulic Motor (If Specified/Supplied)
1
1
Hydraulic Power Pack Details (P/S)
Motor rating (kW)
Maximum
operating
pressure (bar)
Control panel spec.
(WIMES 3.04*)
Motor
specification
(WIMES 3.03*)
Coating
specification
(WIMES 4.01*)
Hydraulic System Details (P/S)
Oil reservoir capacity (l)
Oil grade
Maximum
oil
pump
delivery (l/min)
6.7.2 Scroll Conveyor Drive
1
a
b
c
d
e
2
Type of Drive () (P/S)
Fixed speed electric
motor (common to bowl)
Variable speed electric
motor (common to bowl)
Variable speed electric
motor (separate to bowl)
Variable speed hydraulic
motor (common to bowl)
Variable speed hydraulic
motor (separate to bowl)
Method(s) of Speed Control Available
(S)
ISSUE 4
Page 29
6.7.2.1 Electric Motor (If Specified/Supplied)
1
2
3
Motor
Specification
(WIMES 3.03*) (P/S)
Method of Power Transmission from
Motor to Scroll Conveyor () (P/S)
Belt and pulley
Belt and pulley with fluid
coupling
Direct coupling
Other (specify)
Method of Overload Protection () (P/S)
Current monitoring
Torque monitoring
Other (specify)
6.7.2.2 Hydraulic Motor (If Specified/Supplied)
1
1
Hydraulic Power Pack Details (P/S)
Motor rating (kW)
Maximum
operating
pressure (bar)
Control panel spec.
(WIMES 3.04*)
Motor
specification
(WIMES 3.03*)
Coating
specification
(WIMES 4.01*)
Hydraulic System Details (P/S)
Oil reservoir capacity (l)
Oil grade
Maximum
oil
pump
delivery (l/min)
6.7.2.3 Gearbox (If Specified/Supplied)
1
2
2
Gearbox Details (P/S)
Type
Number of stages
Manufacturer
Service factor
Gearbox Lubricant (P/S)
Type (oil/grease)
Grade
Manufacturer
Method of Lubrication () (P/S)
Sealed for life
Re-lubrication facilities
required/provided (i.e. oil
drain/fill points etc.)
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Page 30
7.0 TESTS
7.1 Test Regime (Clause 7.1.1)
Type of Test
Test Location ()
Witnessing Reqs
Test Standard
(P)
(P)
(P)
(P/S)
Works
Absorbed
power
(at duty point)
Range of sludge
cake
solids
contents
Minimum
solids
recovery
Maximum centrate
solids content
Range of sludge
throughputs
Maximum
flocculant
dosing
rate
Maximum sludge
cake
flocculant
content
Noise
Vibration
Other (specify)
ISSUE 4
Site
(Y/N)
Acceptance
Levels &
Tolerances (P)
Notice (Days)
kW
wt %
ppm ss
m3/hr
Kg/tds
wt %
BS ISO 10816
dB (A)
mm/s
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Page 31
APPENDIX D – SUPPLIER’S SUPPLEMENTARY DATA SHEET INFORMATION
Clause
ISSUE 4
Supplementary Information
OCTOBER 2013