APPENDIX C1 - DATA SHEETS OVERFLOW SCREENS FOR SEWERAGE SYSTEMS & SEWAGE TREATMENT WORKS PROJECT TITLE (P) DOCUMENT REFERENCE (P) PROJECT NUMBER (P) REVISION (P) PROJECT LOCATION (P) DATE (P) SCREEN SUPPLIER (P/S) REFERENCE DRAWINGS INCLUDED (Y/N) (P) TAG NO/ASSET CODE (P) * - Indicates Purchaser’s default requirement 2.0 GENERAL 2.3 General 1 Screen Type () (P/S) Static Screens Perforated plate Wedge wire Self-Cleaning Screens Flushing Brushed Self-powered drum Powered Screens Band Brushed/spiral Flushing 3.0 OPERATING ENVIRONMENT, SITE DETAILS & OVERFLOW CONFIGURATION 3.1 Operating Environment and Site Details 1 Operating Environment (P) Site/Screen Location () Inland Coastal Above ground Under ground Hazardous Area Classification () None Zone 1 Zone 2 EMC Environment () 1st environment – C1 1st environment – C2 2nd environment – C3 2 Electrical Supply to Site () (P) None 400 V, 3 phase, 50 Hz Other (specify) 3 Special Access Restrictions (P) 3.2 Overflow Configuration 1 New or Existing Overflow (P) New/existing 2 Type of Overflow () (P) Low sided weir High sided weir Stilling pond Storage tank (on-line) (inlet) Storage tank (on-line) (outlet) Storage tank (off-line) (inlet) Storage tank (off-line) (outlet) STW storm tank (inlet) STW storm tank (outlet) Pumping station wet well Other (specify) 3 Dimensions of Access Shaft and Overflow Chamber (m) (P) Shaft diameter/size Shaft depth Chamber diameter/size Height from weir crest to underside of chamber roof Weir height Inlet/outlet pipe diameters 3.2 Overflow Configuration (contd.)
1 Weights of Major Components (S) Component (specify) Weight (kg) 1 Heaviest maintenance lift (kg) (S) 1 Heaviest erection lift (kg) (S) 6.1.5 Screen Curtain Support Structure 2 Material(s) (P/S) 6.1.6 Drive Systems (If Required/Provided) 6.1.6.2 Motors/Gearboxes (If Required/Provided) Refer to Appendix C2. 6.1.6.3 Hydraulic Drives (If Required/Provided) 1 Hydraulic Drive to Operate (P/S) 2 Rating (S) Motor rating (kW) Maximum operating pressure (bar) 3 Hydraulic Power Pack (P/S) b Control panel spec. (WIMES 3.04*) c Motor specification (WIMES 3.03*) d Coating specification (WIMES 4.01*) 5 Hydraulic System (P/S) a Oil reservoir capacity (l) b Maximum oil pump delivery (l/min) 7 Further Measures Required to Reduce Impacts of Oil Spillage (P) 8 Rigid Pipework Type () (P/S) Seamless Fully welded 8 Rigid Pipework Material () (P/S) Stainless steel Carbon steel 10 Type of Hydraulic Oil (P/S) 6.1.7 Bearings and Lubrication 6.1.7.2 Rolling Element Bearings 3 Requirements for Split Type Bearings (P) 6.1.7.3 Lubrication 1 Bearing Lubrication Philosophy () (P/S) Sealed for life Manual re-greasing Automatic re-greasing 5 Minimum Capacity/Life of Auto Grease Dispensers (cc/mths) (P/S) 6.1.9 Information Plate 1 Additional Information Reqd. on Plate (P) 2 Duplicate Plate Required (Y/N) (P) 2 Location of Information Plate (P) 6.1.11 Control Panel and Associated Electrical Installation 1 Control Panel Required/ Provided (Y/N) (P/S) 2 Control Panel Specification () (P) WIMES 3.04* Supplier’s standard Purchaser’s standard 6.1.13 Theft Prevention 1 Painting of Stainless Steel Components Required (Y/N) (P) 6.1.14 O & M Manuals 1 Reference for Particular Specification (P) 6.2 Static Screens 6.2.1 Static Perforated Plate Screens 6.2.1.1 General
1 Direction of Flow Through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 6.2.1.2 Screen 1 Screen Element Material (P/S) 2 Aperture size (mm) (P/S) 3 Screen Installation Free Area (%) (S) 4 Plate Thickness (mm) (S) 6.2.1.3 Screen Cleaning System 1 Rotating Spray Bar Required (Y/N) (P) 6.2.2 Static Wedge Wire Screens 6.2.2.1 General 1 Direction of Flow through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 6.2.2.2 Screen 1 Screen Element Material (P/S) 2 Aperture size (mm) (P/S) 3 Screen Installation Free Area (%) (S) 4 Wedge Wire Dimensions (mm) (S) Profile wires Support rods 6.2.2.3 Screen Cleaning System 1 Rotating Spray Bar Required (Y/N) (P) 6.3 Self Cleaning Screens 6.3.1 Flushing Screens 6.3.1.1 General 1 Direction of Flow through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 6.3.1.2 Screen 1 Screen Element Material (P/S) 2 Aperture size (mm) (P/S) 3 Screen Installation Free Area (%) (S) 4 Plate Thickness (mm) (S) 6.3.1.3 Screen Cleaning System 1 Type of Device or Mechanism Required/ Provided () (P/S) Siphon Other (specify) 6.3.2 Brushed Screens 6.3.2.1 General 1 Direction of Flow through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 3 Angle of Inclination of Screen to Weir (P/S) 6.3.2.2 Screen 1 Type of Screen Construction () (P/S) Perforated plate Wedge wire 2 Screen Element Material (P/S) 3 Aperture size (mm) (P/S) 4 Screen Installation Free Area (%) (S) 5 Plate Thickness (mm) (S) 6 Wedge Wire Dimensions (mm) (S) Profile wires Support rods 6.3.2.3 Screen Cleaning System General 1 Type of Device or Mechanism Required/ Provided () (P/S) Waterwheel driven rotating brush Other (specify) 2 Number of Brushes (S) 2 Bristle Details (S)
Length (mm) Diameter (mm) Material No. per unit area 3 Method of Brush Adjustment (S) Waterwheel Driven Rotating Brush (If Required/ Provided) 2 Minimum ‘Head-Room’ Available to Drive Waterwheel (m) (P) 3 Dimensions of Space Available for Installation of Waterwheel (m) (P) 4 Waterwheel Material (S) 4 Waterwheel Dimensions (S) Width (mm) Diameter (mm) 5 Speed of Rotation of Waterwheel at max. Flow to be Screened (rpm) (S) 5 Minimum Head/Flow Rate required To Rotate Waterwheel (m or l/s) (S) 6.3.3 Self-Powered Drum Screens 6.3.3.2 Screen 1 Screen Element Material (P/S) 2 Aperture size (mm) (P/S) 3 Screen Installation Free Area (%) (S) 4 Plate Thickness (mm) (S) 6.4 Powered Screens 6.4.1 Band Screens 6.4.1.1 General 1 Direction of Flow through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 6.4.1.2 Screen 1 Screen Element Material (P/S) 2 Aperture size (mm) (P/S) 3 Screen Installation Free Area (%) (S) 4 Screen Element Thickness (mm) (S) 6 Drive Chain Type () (P/S) Conveyor chain Roller chain 6 Drive Chain Breaking Load (kN) (S) 6.4.1.4 Screen Cleaning System 2 Brush Diameter (mm) (S) 2 Bristle Details (S) Length (mm) Diameter (mm) Material No. per unit area 3 Method of Brush Adjustment (S) 6.4.2 Brushed/Spiral Screens 6.4.2.1 General 1 Direction of Flow through Screen () (P/S) Upwards Downwards Sideways (weir mounted) 3 Angle of Inclination of Screen to Weir (P/S) 6.4.2.2 Screen 1 Type of Screen Construction () (P/S) Perforated plate Wedge wire 2 Screen Element Material (P/S) 3 Aperture size (mm) (P/S) 4 Screen Installation Free Area (%) (S) 5 Plate Thickness (mm) (S) 6 Wedge Wire Dimensions (mm) (S) Profile wires Support rods 6.4.2.3 Screen Cleaning System General 1 Method of Screen Cleaning Required/ Provided () (P/S)