APPENDIX F - Ribble Valley...The Flood Risk Consultancy Page 1 20 Church Street MITTON ROAD Colne BUSINESS PARK Lancashire BB8 0LG SURFACE WATER Date 21/07/2017 Designed by CV File

APPENDIX F

MicroDrainage Calculations

The Flood Risk Consultancy Page 120 Church Street MITTON ROADColne BUSINESS PARKLancashire BB8 0LG SURFACE WATERDate 21/07/2017 Designed by CVFile DD JULY 2017.MDX Checked byXP Solutions Network 2017.1.2

STORM SEWER DESIGN by the Modified Rational Method

Design Criteria for Storm

©1982-2017 XP Solutions

Pipe Sizes STANDARD Manhole Sizes STANDARD

FSR Rainfall Model - England and WalesReturn Period (years) 1

M5-60 (mm) 19.500Ratio R 0.288

Maximum Rainfall (mm/hr) 150Maximum Time of Concentration (mins) 30

Foul Sewage (l/s/ha) 0.000Volumetric Runoff Coeff. 0.750

PIMP (%) 100Add Flow / Climate Change (%) 0

Minimum Backdrop Height (m) 0.200Maximum Backdrop Height (m) 1.500

Min Design Depth for Optimisation (m) 1.200Min Vel for Auto Design only (m/s) 1.00

Min Slope for Optimisation (1:X) 500

Designed with Level Soffits

Network Design Table for Storm

« - Indicates pipe capacity < flow

PN Length(m)

Fall(m)

Slope(1:X)

I.Area(ha)

T.E.(mins)

BaseFlow (l/s)

k(mm)

HYDSECT

DIA(mm)

Section Type AutoDesign

1.000 48.800 0.199 245.2 0.100 4.00 0.0 0.600 o 300 Pipe/Conduit1.001 44.200 0.180 245.6 0.040 0.00 0.0 0.600 o 300 Pipe/Conduit1.002 7.000 0.029 241.4 0.086 0.00 0.0 0.600 o 300 Pipe/Conduit1.003 40.000 0.163 245.4 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit1.004 6.200 0.025 248.0 0.130 0.00 0.0 0.600 o 300 Pipe/Conduit

2.000 12.200 0.050 244.0 0.070 4.00 0.0 0.600 o 300 Pipe/Conduit2.001 50.000 0.204 245.1 0.067 0.00 0.0 0.600 o 300 Pipe/Conduit

Network Results Table

PN Rain(mm/hr)

T.C.(mins)

US/IL(m)

Σ I.Area(ha)

Σ BaseFlow (l/s)

Foul(l/s)

Add Flow(l/s)

Vel(m/s)

Cap(l/s)

Flow(l/s)

1.000 45.89 4.81 54.880 0.100 0.0 0.0 0.0 1.00 70.7 12.41.001 43.40 5.55 54.681 0.140 0.0 0.0 0.0 1.00 70.6 16.51.002 43.03 5.67 54.501 0.226 0.0 0.0 0.0 1.01 71.2 26.31.003 41.08 6.33 54.472 0.226 0.0 0.0 0.0 1.00 70.6 26.31.004 40.79 6.44 54.309 0.356 0.0 0.0 0.0 0.99 70.3 39.3

2.000 48.25 4.20 55.100 0.070 0.0 0.0 0.0 1.00 70.8 9.12.001 45.10 5.04 55.050 0.137 0.0 0.0 0.0 1.00 70.7 16.7




PN Length(m)

Fall(m)

Slope(1:X)

I.Area(ha)

T.E.(mins)

BaseFlow (l/s)

k(mm)

HYDSECT

DIA(mm)


2.002 44.700 0.182 245.6 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit2.003 5.500 0.022 250.0 0.150 0.00 0.0 0.600 o 300 Pipe/Conduit2.004 10.000 0.358 27.9 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit

1.005 28.300 0.116 244.0 0.043 0.00 0.0 0.600 o 300 Pipe/Conduit1.006 5.000 0.020 250.0 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit1.007 5.000 0.050 100.0 0.000 0.00 0.0 0.600 ooo -82 Pipe/Conduit



5.000 13.300 0.133 100.0 0.007 4.00 0.0 0.600 o 150 Pipe/Conduit5.001 10.500 0.105 100.0 0.007 0.00 0.0 0.600 o 150 Pipe/Conduit5.002 23.700 0.237 100.0 0.015 0.00 0.0 0.600 o 150 Pipe/Conduit5.003 14.000 0.140 100.0 0.000 0.00 0.0 0.600 o 150 Pipe/Conduit5.004 16.000 0.160 100.0 0.019 0.00 0.0 0.600 o 150 Pipe/Conduit5.005 19.000 0.190 100.0 0.011 0.00 0.0 0.600 o 150 Pipe/Conduit5.006 16.300 0.213 76.5 0.011 0.00 0.0 0.600 o 150 Pipe/Conduit


PN Rain(mm/hr)

T.C.(mins)

US/IL(m)

Σ I.Area(ha)

Σ BaseFlow (l/s)

Foul(l/s)

Add Flow(l/s)

Vel(m/s)

Cap(l/s)

Flow(l/s)

2.002 42.68 5.78 54.846 0.137 0.0 0.0 0.0 1.00 70.6 16.72.003 42.40 5.87 54.664 0.287 0.0 0.0 0.0 0.99 70.0 33.02.004 42.23 5.93 54.642 0.287 0.0 0.0 0.0 2.99 211.1 33.0

1.005 39.56 6.91 54.284 0.686 0.0 0.0 0.0 1.00 70.8« 73.51.006 39.35 6.99 54.068 0.686 0.0 0.0 0.0 0.99 70.0« 73.51.007 39.14 7.08 54.048 0.686 0.0 0.0 0.0 1.00 53.3« 73.5

3.000 48.04 4.25 55.400 0.029 0.0 0.0 0.0 1.00 17.8 3.83.001 47.51 4.39 55.247 0.058 0.0 0.0 0.0 2.53 44.7 7.5

4.000 48.80 4.07 56.583 0.016 0.0 0.0 0.0 3.20 56.6 2.14.001 47.51 4.39 55.213 0.031 0.0 0.0 0.0 1.00 17.8 4.04.002 46.76 4.58 55.023 0.046 0.0 0.0 0.0 1.25 22.1 5.8

5.000 48.18 4.22 55.975 0.007 0.0 0.0 0.0 1.00 17.8 0.95.001 47.48 4.39 55.842 0.014 0.0 0.0 0.0 1.00 17.8 1.85.002 45.99 4.79 55.737 0.029 0.0 0.0 0.0 1.00 17.8 3.65.003 45.16 5.02 55.500 0.029 0.0 0.0 0.0 1.00 17.8 3.65.004 44.26 5.29 55.360 0.048 0.0 0.0 0.0 1.00 17.8 5.85.005 43.24 5.60 55.200 0.059 0.0 0.0 0.0 1.00 17.8 6.95.006 42.51 5.84 55.010 0.070 0.0 0.0 0.0 1.15 20.3 8.1




PN Length(m)

Fall(m)

Slope(1:X)

I.Area(ha)

T.E.(mins)

BaseFlow (l/s)

k(mm)

HYDSECT

DIA(mm)



6.000 14.000 1.177 11.9 0.022 4.00 0.0 0.600 o 150 Pipe/Conduit

4.005 2.000 0.200 10.0 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit



9.000 51.400 0.679 75.7 0.026 4.00 0.0 0.600 o 150 Pipe/Conduit

8.002 6.500 0.598 10.9 0.018 0.00 0.0 0.600 o 225 Pipe/Conduit

1.008 5.000 0.050 100.0 0.000 0.00 0.0 0.600 ooo -82 Pipe/Conduit1.009 19.000 0.131 145.0 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit1.010 24.000 0.166 144.6 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit


PN Rain(mm/hr)

T.C.(mins)

US/IL(m)

Σ I.Area(ha)

Σ BaseFlow (l/s)

Foul(l/s)

Add Flow(l/s)

Vel(m/s)

Cap(l/s)

Flow(l/s)

4.003 42.04 6.00 54.722 0.142 0.0 0.0 0.0 1.00 39.9 16.24.004 40.80 6.43 54.665 0.164 0.0 0.0 0.0 1.45 57.6 18.1

6.000 48.76 4.08 55.450 0.022 0.0 0.0 0.0 2.94 51.9 2.9

4.005 40.78 6.44 54.198 0.186 0.0 0.0 0.0 4.16 165.5 20.5

7.000 48.07 4.25 55.350 0.066 0.0 0.0 0.0 1.00 39.7 8.67.001 47.72 4.33 55.263 0.132 0.0 0.0 0.0 2.76 109.7 17.17.002 47.62 4.36 54.628 0.132 0.0 0.0 0.0 4.16 165.5 17.1

8.000 45.78 4.85 55.350 0.026 0.0 0.0 0.0 1.00 17.8 3.28.001 45.04 5.05 54.840 0.052 0.0 0.0 0.0 1.11 19.6 6.3

9.000 46.16 4.74 55.350 0.026 0.0 0.0 0.0 1.16 20.4 3.3

8.002 44.95 5.08 54.596 0.096 0.0 0.0 0.0 3.99 158.7 11.7

1.008 38.94 7.16 53.400 1.158 0.0 0.0 0.0 1.00 53.3« 122.11.009 38.25 7.45 53.275 1.158 0.0 0.0 0.0 1.08 43.1« 122.11.010 37.41 7.82 53.144 1.158 0.0 0.0 0.0 1.09 43.2« 122.1




PN Length(m)

Fall(m)

Slope(1:X)

I.Area(ha)

T.E.(mins)

BaseFlow (l/s)

k(mm)

HYDSECT

DIA(mm)


1.011 13.600 -3.255 -4.2 0.000 0.00 0.0 0.600 o 80 Pipe/Conduit1.012 1.800 0.033 54.5 0.000 0.00 0.0 0.600 o 150 Pipe/Conduit


PN Rain(mm/hr)

T.C.(mins)

US/IL(m)

Σ I.Area(ha)

Σ BaseFlow (l/s)

Foul(l/s)

Add Flow(l/s)

Vel(m/s)

Cap(l/s)

Flow(l/s)

1.011 30.76 11.66 52.978 1.158 0.0 0.0 0.0 0.06 0.3« 122.11.012 30.73 11.68 56.233 1.158 0.0 0.0 0.0 1.36 24.1« 122.1


Manhole Schedules for Storm


MHName

MHCL (m)

MHDepth(m)

MHConnection

MHDiam.,L*W

(mm)PN

Pipe OutInvert

Level (m)Diameter

(mm)PN

Pipes InInvert

Level (m)Diameter

(mm)Backdrop

(mm)

1 56.800 1.920 Open Manhole 1200 1.000 54.880 300

2 57.250 2.569 Open Manhole 1200 1.001 54.681 300 1.000 54.681 300

3 57.320 2.819 Open Manhole 1200 1.002 54.501 300 1.001 54.501 300

4 57.350 2.878 Open Manhole 1200 1.003 54.472 300 1.002 54.472 300

5 57.400 3.091 Open Manhole 1200 1.004 54.309 300 1.003 54.309 300

6 56.600 1.500 Open Manhole 1200 2.000 55.100 300

7 56.600 1.550 Open Manhole 1200 2.001 55.050 300 2.000 55.050 300

8 56.900 2.054 Open Manhole 1200 2.002 54.846 300 2.001 54.846 300

9 57.130 2.466 Open Manhole 600 2.003 54.664 300 2.002 54.664 300

10 57.200 2.558 Open Manhole 1200 2.004 54.642 300 2.003 54.642 300

11 57.400 3.116 Open Manhole 1200 1.005 54.284 300 1.004 54.284 300

2.004 54.284 300

INTERCEPTOR 57.200 3.132 Open Manhole 1200 1.006 54.068 300 1.005 54.168 300

12 57.150 3.102 Open Manhole 1200 1.007 54.048 -82 1.006 54.048 300

13 56.750 1.350 Open Manhole 600 3.000 55.400 150

14 56.700 1.453 Open Manhole 1200 3.001 55.247 150 3.000 55.247 150

15 56.800 0.217 Open Manhole 600 4.000 56.583 150

16 56.800 1.587 Open Manhole 600 4.001 55.213 150 4.000 55.213 150

17 57.300 2.277 Open Manhole 600 4.002 55.023 150 4.001 55.023 150

18 57.400 1.425 Open Manhole 600 5.000 55.975 150

19 57.400 1.558 Open Manhole 600 5.001 55.842 150 5.000 55.842 150

20 57.400 1.663 Open Manhole 600 5.002 55.737 150 5.001 55.737 150

21 57.400 1.900 Open Manhole 600 5.003 55.500 150 5.002 55.500 150

22 57.400 2.040 Open Manhole 600 5.004 55.360 150 5.003 55.360 150

23 57.300 2.100 Open Manhole 600 5.005 55.200 150 5.004 55.200 150

24 57.300 2.290 Open Manhole 600 5.006 55.010 150 5.005 55.010 150

25 57.300 2.578 Open Manhole 600 4.003 54.722 225 4.002 54.797 150

5.006 54.797 150

26 57.300 2.635 Open Manhole 600 4.004 54.665 225 4.003 54.665 225

27 56.700 1.250 Open Manhole 600 6.000 55.450 150

28 56.600 2.402 Open Manhole 600 4.005 54.198 225 4.004 54.198 225

6.000 54.273 150

29 57.350 2.000 Open Manhole 600 7.000 55.350 225

30 57.130 1.867 Open Manhole 600 7.001 55.263 225 7.000 55.263 225

31 57.130 2.502 Open Manhole 600 7.002 54.628 225 7.001 54.628 225

32 57.130 1.780 Open Manhole 600 8.000 55.350 150

33 57.130 2.290 Open Manhole 600 8.001 54.840 150 8.000 54.840 150

34 57.130 1.780 Open Manhole 600 9.000 55.350 150


Manhole Schedules for Storm


MHName

MHCL (m)

MHDepth(m)

MHConnection

MHDiam.,L*W

(mm)PN

Pipe OutInvert

Level (m)Diameter

(mm)PN

Pipes InInvert

Level (m)Diameter

(mm)Backdrop

(mm)

35 57.130 2.534 Open Manhole 1200 8.002 54.596 225 8.001 54.671 150

9.000 54.671 150

TANK 56.600 3.200 Open Manhole 1200 1.008 53.400 -82 1.007 53.998 -82 598

3.001 53.998 150 598

4.005 53.998 225 673

7.002 53.998 225 673

8.002 53.998 225 673

36 56.600 3.325 Open Manhole 1200 1.009 53.275 225 1.008 53.350 -82

37 56.700 3.556 Open Manhole 1200 1.010 53.144 225 1.009 53.144 225

38 PUMP 56.700 3.722 Open Manhole 1200 1.011 52.978 80 1.010 52.978 225

39 56.700 0.467 Open Manhole 1200 1.012 56.233 150 1.011 56.233 80

56.700 0.500 Open Manhole 0 OUTFALL 1.012 56.200 150


PIPELINE SCHEDULES for Storm

Upstream Manhole


PN HydSect

Diam(mm)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)

1.000 o 300 1 56.800 54.880 1.620 Open Manhole 12001.001 o 300 2 57.250 54.681 2.269 Open Manhole 12001.002 o 300 3 57.320 54.501 2.519 Open Manhole 12001.003 o 300 4 57.350 54.472 2.578 Open Manhole 12001.004 o 300 5 57.400 54.309 2.791 Open Manhole 1200

2.000 o 300 6 56.600 55.100 1.200 Open Manhole 12002.001 o 300 7 56.600 55.050 1.250 Open Manhole 12002.002 o 300 8 56.900 54.846 1.754 Open Manhole 12002.003 o 300 9 57.130 54.664 2.166 Open Manhole 6002.004 o 300 10 57.200 54.642 2.258 Open Manhole 1200

1.005 o 300 11 57.400 54.284 2.816 Open Manhole 12001.006 o 300 INTERCEPTOR 57.200 54.068 2.832 Open Manhole 12001.007 ooo -82 12 57.150 54.048 2.952 Open Manhole 1200

3.000 o 150 13 56.750 55.400 1.200 Open Manhole 6003.001 o 150 14 56.700 55.247 1.303 Open Manhole 1200


Downstream Manhole

PN Length(m)

Slope(1:X)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)

1.000 48.800 245.2 2 57.250 54.681 2.269 Open Manhole 12001.001 44.200 245.6 3 57.320 54.501 2.519 Open Manhole 12001.002 7.000 241.4 4 57.350 54.472 2.578 Open Manhole 12001.003 40.000 245.4 5 57.400 54.309 2.791 Open Manhole 12001.004 6.200 248.0 11 57.400 54.284 2.816 Open Manhole 1200

2.000 12.200 244.0 7 56.600 55.050 1.250 Open Manhole 12002.001 50.000 245.1 8 56.900 54.846 1.754 Open Manhole 12002.002 44.700 245.6 9 57.130 54.664 2.166 Open Manhole 6002.003 5.500 250.0 10 57.200 54.642 2.258 Open Manhole 12002.004 10.000 27.9 11 57.400 54.284 2.816 Open Manhole 1200

1.005 28.300 244.0 INTERCEPTOR 57.200 54.168 2.732 Open Manhole 12001.006 5.000 250.0 12 57.150 54.048 2.802 Open Manhole 12001.007 5.000 100.0 TANK 56.600 53.998 2.452 Open Manhole 1200

3.000 15.300 100.0 14 56.700 55.247 1.303 Open Manhole 12003.001 20.000 16.0 TANK 56.600 53.998 2.452 Open Manhole 1200

4.000 13.700 10.0 16 56.800 55.213 1.437 Open Manhole 6004.001 19.000 100.0 17 57.300 55.023 2.127 Open Manhole 600



Upstream Manhole


PN HydSect

Diam(mm)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)

4.002 o 150 17 57.300 55.023 2.127 Open Manhole 600

5.000 o 150 18 57.400 55.975 1.275 Open Manhole 6005.001 o 150 19 57.400 55.842 1.408 Open Manhole 6005.002 o 150 20 57.400 55.737 1.513 Open Manhole 6005.003 o 150 21 57.400 55.500 1.750 Open Manhole 6005.004 o 150 22 57.400 55.360 1.890 Open Manhole 6005.005 o 150 23 57.300 55.200 1.950 Open Manhole 6005.006 o 150 24 57.300 55.010 2.140 Open Manhole 600


6.000 o 150 27 56.700 55.450 1.100 Open Manhole 600

4.005 o 225 28 56.600 54.198 2.177 Open Manhole 600

7.000 o 225 29 57.350 55.350 1.775 Open Manhole 6007.001 o 225 30 57.130 55.263 1.642 Open Manhole 6007.002 o 225 31 57.130 54.628 2.277 Open Manhole 600

Downstream Manhole

PN Length(m)

Slope(1:X)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)

4.002 14.600 64.6 25 57.300 54.797 2.353 Open Manhole 600

5.000 13.300 100.0 19 57.400 55.842 1.408 Open Manhole 6005.001 10.500 100.0 20 57.400 55.737 1.513 Open Manhole 6005.002 23.700 100.0 21 57.400 55.500 1.750 Open Manhole 6005.003 14.000 100.0 22 57.400 55.360 1.890 Open Manhole 6005.004 16.000 100.0 23 57.300 55.200 1.950 Open Manhole 6005.005 19.000 100.0 24 57.300 55.010 2.140 Open Manhole 6005.006 16.300 76.5 25 57.300 54.797 2.353 Open Manhole 600


6.000 14.000 11.9 28 56.600 54.273 2.177 Open Manhole 600

4.005 2.000 10.0 TANK 56.600 53.998 2.377 Open Manhole 1200

7.000 14.800 170.1 30 57.130 55.263 1.642 Open Manhole 6007.001 14.400 22.7 31 57.130 54.628 2.277 Open Manhole 6007.002 6.300 10.0 TANK 56.600 53.998 2.377 Open Manhole 1200



Upstream Manhole


PN HydSect

Diam(mm)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)


9.000 o 150 34 57.130 55.350 1.630 Open Manhole 600

8.002 o 225 35 57.130 54.596 2.309 Open Manhole 1200

1.008 ooo -82 TANK 56.600 53.400 3.050 Open Manhole 12001.009 o 225 36 56.600 53.275 3.100 Open Manhole 12001.010 o 225 37 56.700 53.144 3.331 Open Manhole 12001.011 o 80 38 PUMP 56.700 52.978 3.642 Open Manhole 12001.012 o 150 39 56.700 56.233 0.317 Open Manhole 1200

Downstream Manhole

PN Length(m)

Slope(1:X)

MHName

C.Level(m)

I.Level(m)

D.Depth(m)

MHConnection

MH DIAM., L*W(mm)


9.000 51.400 75.7 35 57.130 54.671 2.309 Open Manhole 1200

8.002 6.500 10.9 TANK 56.600 53.998 2.377 Open Manhole 1200

1.008 5.000 100.0 36 56.600 53.350 3.100 Open Manhole 12001.009 19.000 145.0 37 56.700 53.144 3.331 Open Manhole 12001.010 24.000 144.6 38 PUMP 56.700 52.978 3.497 Open Manhole 12001.011 13.600 -4.2 39 56.700 56.233 0.387 Open Manhole 12001.012 1.800 54.5 56.700 56.200 0.350 Open Manhole 0

Simulation Criteria for Storm

Volumetric Runoff Coeff 0.750 Additional Flow - % of Total Flow 0.000Areal Reduction Factor 1.000 MADD Factor * 10m³/ha Storage 2.000

Hot Start (mins) 0 Inlet Coeffiecient 0.800Hot Start Level (mm) 0 Flow per Person per Day (l/per/day) 0.000

Manhole Headloss Coeff (Global) 0.500 Run Time (mins) 60Foul Sewage per hectare (l/s) 0.000 Output Interval (mins) 1

Number of Input Hydrographs 0 Number of Storage Structures 1Number of Online Controls 1 Number of Time/Area Diagrams 0

Number of Offline Controls 0 Number of Real Time Controls 0

Synthetic Rainfall Details


Synthetic Rainfall Details


Rainfall Model FSR Profile Type SummerReturn Period (years) 1 Cv (Summer) 0.750

Region England and Wales Cv (Winter) 0.840M5-60 (mm) 19.500 Storm Duration (mins) 30

Ratio R 0.288


Online Controls for Storm


Pump Manhole: 38 PUMP, DS/PN: 1.011, Volume (m³): 5.1

Invert Level (m) 52.978

Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s)

0.200 11.2000 1.800 11.2000 3.400 11.2000 5.000 11.20000.400 11.2000 2.000 11.2000 3.600 11.2000 5.200 11.20000.600 11.2000 2.200 11.2000 3.800 11.2000 5.400 11.20000.800 11.2000 2.400 11.2000 4.000 11.2000 5.600 11.20001.000 11.2000 2.600 11.2000 4.200 11.2000 5.800 11.20001.200 11.2000 2.800 11.2000 4.400 11.2000 6.000 11.20001.400 11.2000 3.000 11.2000 4.600 11.20001.600 11.2000 3.200 11.2000 4.800 11.2000


Storage Structures for Storm


Cellular Storage Manhole: TANK, DS/PN: 1.008

Invert Level (m) 53.400Infiltration Coefficient Base (m/hr) 0.00000Infiltration Coefficient Side (m/hr) 0.00000

Safety Factor 2.0Porosity 0.95

Depth (m) Area (m²) Inf. Area (m²) Depth (m) Area (m²) Inf. Area (m²)

0.000 360.0 360.0 5.200 0.0 527.00.400 360.0 390.4 5.600 0.0 527.00.800 360.0 420.7 6.000 0.0 527.01.200 360.0 451.1 6.400 0.0 527.01.600 360.0 481.4 6.800 0.0 527.02.000 360.0 511.8 7.200 0.0 527.02.400 0.0 527.0 7.600 0.0 527.02.800 0.0 527.0 8.000 0.0 527.03.200 0.0 527.0 8.400 0.0 527.03.600 0.0 527.0 8.800 0.0 527.04.000 0.0 527.0 9.200 0.0 527.04.400 0.0 527.0 9.600 0.0 527.04.800 0.0 527.0 10.000 0.0 527.0


1 year Return Period Summary of Critical Results by Maximum Level (Rank 1)for Storm


Simulation CriteriaAreal Reduction Factor 1.000 Additional Flow - % of Total Flow 0.000

Hot Start (mins) 0 MADD Factor * 10m³/ha Storage 2.000Hot Start Level (mm) 0 Inlet Coeffiecient 0.800

Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000Foul Sewage per hectare (l/s) 0.000



Synthetic Rainfall DetailsRainfall Model FSR Ratio R 0.286

Region England and Wales Cv (Summer) 0.750M5-60 (mm) 19.500 Cv (Winter) 0.840

Margin for Flood Risk Warning (mm) 50.0Analysis Timestep 2.5 Second Increment (Extended)

DTS Status ONDVD Status ON

Inertia Status ON

Profile(s) Summer and WinterDuration(s) (mins) 15, 30, 60, 120, 180, 240, 360, 480, 600,

720, 960, 1440, 2160, 2880, 4320, 5760,7200, 8640, 10080

Return Period(s) (years) 1, 30, 100Climate Change (%) 20, 20, 20

PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

1.000 1 15 Winter 1 +20% 30/15 Summer1.001 2 15 Winter 1 +20% 30/15 Summer1.002 3 15 Winter 1 +20% 30/15 Summer1.003 4 15 Winter 1 +20% 30/15 Summer1.004 5 15 Winter 1 +20% 1/15 Summer2.000 6 15 Winter 1 +20% 30/15 Summer 100/15 Winter2.001 7 15 Winter 1 +20% 30/15 Summer 100/15 Winter2.002 8 15 Winter 1 +20% 30/15 Summer2.003 9 15 Winter 1 +20% 30/15 Summer2.004 10 15 Winter 1 +20% 30/15 Summer1.005 11 15 Winter 1 +20% 1/15 Winter1.006 INTERCEPTOR 15 Winter 1 +20% 1/15 Summer1.007 12 15 Winter 1 +20% 1/15 Summer3.000 13 15 Winter 1 +20%3.001 14 15 Winter 1 +20%4.000 15 15 Summer 1 +20%4.001 16 15 Winter 1 +20% 100/15 Summer




PNUS/MHName

OverflowAct.

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)

PipeFlow(l/s) Status

1.000 1 54.978 -0.202 0.000 0.22 14.8 OK1.001 2 54.793 -0.188 0.000 0.29 19.0 OK1.002 3 54.711 -0.090 0.000 0.54 28.1 OK1.003 4 54.699 -0.073 0.000 0.38 24.8 OK1.004 5 54.660 0.051 0.000 0.67 33.0 SURCHARGED2.000 6 55.193 -0.207 0.000 0.19 10.9 OK2.001 7 55.160 -0.190 0.000 0.28 18.5 OK2.002 8 54.953 -0.193 0.000 0.27 17.9 OK2.003 9 54.855 -0.109 0.000 0.73 34.6 OK2.004 10 54.739 -0.203 0.000 0.23 34.6 OK1.005 11 54.603 0.019 0.000 1.11 70.9 SURCHARGED1.006 INTERCEPTOR 54.415 0.047 0.000 1.53 70.9 SURCHARGED1.007 12 54.286 0.088 0.000 1.69 71.1 SURCHARGED3.000 13 55.453 -0.097 0.000 0.28 4.5 OK3.001 14 55.292 -0.105 0.000 0.19 8.1 OK4.000 15 56.604 -0.129 0.000 0.05 2.5 OK4.001 16 55.265 -0.098 0.000 0.26 4.3 OK

PNUS/MHName

LevelExceeded

1.000 11.001 21.002 31.003 41.004 52.000 6 32.001 7 22.002 82.003 92.004 101.005 111.006 INTERCEPTOR1.007 123.000 133.001 144.000 154.001 16




PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

OverflowAct.

4.002 17 15 Winter 1 +20% 100/15 Summer5.000 18 15 Winter 1 +20% 100/15 Winter5.001 19 15 Winter 1 +20% 100/15 Summer5.002 20 15 Winter 1 +20% 100/15 Summer5.003 21 15 Winter 1 +20% 30/15 Summer5.004 22 15 Winter 1 +20% 30/15 Summer5.005 23 15 Winter 1 +20% 30/15 Summer5.006 24 15 Winter 1 +20% 30/15 Summer4.003 25 15 Winter 1 +20% 30/15 Summer4.004 26 15 Winter 1 +20% 100/15 Summer6.000 27 15 Winter 1 +20%4.005 28 15 Winter 1 +20% 30/120 Winter7.000 29 15 Winter 1 +20%7.001 30 15 Winter 1 +20%7.002 31 15 Winter 1 +20% 100/180 Winter8.000 32 15 Winter 1 +20%8.001 33 15 Winter 1 +20% 30/15 Summer9.000 34 15 Winter 1 +20%8.002 35 15 Winter 1 +20% 100/120 Winter1.008 TANK 240 Winter 1 +20% 1/15 Summer1.009 36 180 Winter 1 +20% 1/15 Summer1.010 37 120 Winter 1 +20% 1/15 Summer1.011 38 PUMP 120 Winter 1 +20% 1/15 Summer1.012 39 15 Summer 1 +20%

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded

4.002 17 55.080 -0.093 0.000 0.30 6.1 OK5.000 18 56.000 -0.125 0.000 0.07 1.1 OK5.001 19 55.877 -0.115 0.000 0.12 2.0 OK5.002 20 55.785 -0.102 0.000 0.22 3.8 OK5.003 21 55.549 -0.101 0.000 0.23 3.8 OK5.004 22 55.423 -0.087 0.000 0.37 6.1 OK5.005 23 55.270 -0.080 0.000 0.44 7.4 OK5.006 24 55.082 -0.078 0.000 0.46 8.6 OK4.003 25 54.840 -0.107 0.000 0.54 17.9 OK4.004 26 54.760 -0.130 0.000 0.37 20.2 OK6.000 27 55.476 -0.124 0.000 0.07 3.4 OK4.005 28 54.293 -0.130 0.000 0.36 23.0 OK7.000 29 55.433 -0.142 0.000 0.29 10.3 OK7.001 30 55.330 -0.158 0.000 0.19 18.4 OK7.002 31 54.689 -0.164 0.000 0.16 18.3 OK8.000 32 55.399 -0.101 0.000 0.22 3.9 OK8.001 33 54.906 -0.084 0.000 0.39 7.0 OK9.000 34 55.396 -0.104 0.000 0.20 4.1 OK




8.002 35 54.648 -0.173 0.000 0.12 13.3 OK1.008 TANK 53.788 0.238 0.000 0.75 31.4 SURCHARGED1.009 36 53.799 0.299 0.000 0.73 28.3 SURCHARGED1.010 37 53.862 0.493 0.000 0.50 19.7 SURCHARGED1.011 38 PUMP 53.864 0.806 0.000 9.38 11.2 SURCHARGED1.012 39 56.352 -0.031 0.000 0.98 11.2 OK

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded













Inertia Status ON


720, 960, 1440, 2160, 2880, 4320, 5760,7200, 8640, 10080


PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

1.000 1 15 Winter 30 +20% 30/15 Summer1.001 2 15 Winter 30 +20% 30/15 Summer1.002 3 15 Winter 30 +20% 30/15 Summer1.003 4 15 Winter 30 +20% 30/15 Summer1.004 5 15 Winter 30 +20% 1/15 Summer2.000 6 15 Winter 30 +20% 30/15 Summer 100/15 Winter2.001 7 15 Winter 30 +20% 30/15 Summer 100/15 Winter2.002 8 15 Winter 30 +20% 30/15 Summer2.003 9 15 Winter 30 +20% 30/15 Summer2.004 10 15 Winter 30 +20% 30/15 Summer1.005 11 15 Winter 30 +20% 1/15 Winter1.006 INTERCEPTOR 15 Winter 30 +20% 1/15 Summer1.007 12 15 Winter 30 +20% 1/15 Summer3.000 13 15 Winter 30 +20%3.001 14 15 Winter 30 +20%4.000 15 15 Winter 30 +20%4.001 16 15 Summer 30 +20% 100/15 Summer




PNUS/MHName

OverflowAct.

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


1.000 1 55.910 0.730 0.000 0.45 29.6 SURCHARGED1.001 2 55.882 0.901 0.000 0.47 30.9 SURCHARGED1.002 3 55.802 1.001 0.000 0.99 50.9 SURCHARGED1.003 4 55.732 0.960 0.000 0.72 47.1 SURCHARGED1.004 5 55.644 1.035 0.000 1.51 74.7 SURCHARGED2.000 6 55.967 0.567 0.000 0.44 25.4 SURCHARGED2.001 7 55.957 0.607 0.000 0.62 41.0 SURCHARGED2.002 8 55.884 0.738 0.000 0.48 31.8 SURCHARGED2.003 9 55.809 0.845 0.000 1.27 60.6 SURCHARGED2.004 10 55.750 0.808 0.000 0.38 56.6 SURCHARGED1.005 11 55.552 0.968 0.000 2.16 138.6 SURCHARGED1.006 INTERCEPTOR 54.998 0.630 0.000 2.99 138.6 SURCHARGED1.007 12 54.689 0.491 0.000 3.31 138.9 SURCHARGED3.000 13 55.490 -0.060 0.000 0.67 11.1 OK3.001 14 55.324 -0.073 0.000 0.53 22.1 OK4.000 15 56.617 -0.116 0.000 0.12 6.1 OK4.001 16 55.307 -0.056 0.000 0.71 11.8 OK

PNUS/MHName

LevelExceeded

1.000 11.001 21.002 31.003 41.004 52.000 6 32.001 7 22.002 82.003 92.004 101.005 111.006 INTERCEPTOR1.007 123.000 133.001 144.000 154.001 16




PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

OverflowAct.

4.002 17 15 Winter 30 +20% 100/15 Summer5.000 18 15 Winter 30 +20% 100/15 Winter5.001 19 15 Summer 30 +20% 100/15 Summer5.002 20 15 Summer 30 +20% 100/15 Summer5.003 21 15 Winter 30 +20% 30/15 Summer5.004 22 15 Winter 30 +20% 30/15 Summer5.005 23 15 Winter 30 +20% 30/15 Summer5.006 24 15 Winter 30 +20% 30/15 Summer4.003 25 15 Winter 30 +20% 30/15 Summer4.004 26 15 Winter 30 +20% 100/15 Summer6.000 27 15 Winter 30 +20%4.005 28 360 Winter 30 +20% 30/120 Winter7.000 29 15 Winter 30 +20%7.001 30 15 Summer 30 +20%7.002 31 15 Summer 30 +20% 100/180 Winter8.000 32 15 Winter 30 +20%8.001 33 15 Winter 30 +20% 30/15 Summer9.000 34 15 Winter 30 +20%8.002 35 15 Winter 30 +20% 100/120 Winter1.008 TANK 360 Winter 30 +20% 1/15 Summer1.009 36 360 Winter 30 +20% 1/15 Summer1.010 37 240 Winter 30 +20% 1/15 Summer1.011 38 PUMP 240 Winter 30 +20% 1/15 Summer1.012 39 15 Summer 30 +20%

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded

4.002 17 55.158 -0.015 0.000 0.83 17.0 OK5.000 18 56.016 -0.109 0.000 0.16 2.7 OK5.001 19 55.902 -0.090 0.000 0.34 5.3 OK5.002 20 55.826 -0.061 0.000 0.65 11.0 OK5.003 21 55.687 0.037 0.000 0.60 9.8 SURCHARGED5.004 22 55.644 0.134 0.000 0.91 15.1 SURCHARGED5.005 23 55.506 0.156 0.000 1.10 18.3 SURCHARGED5.006 24 55.271 0.111 0.000 1.15 21.7 SURCHARGED4.003 25 54.996 0.049 0.000 1.42 46.8 SURCHARGED4.004 26 54.847 -0.043 0.000 0.99 54.0 OK6.000 27 55.492 -0.108 0.000 0.18 8.4 OK4.005 28 54.575 0.152 0.000 0.19 11.9 SURCHARGED7.000 29 55.492 -0.083 0.000 0.72 25.2 OK7.001 30 55.379 -0.109 0.000 0.52 50.3 OK7.002 31 54.734 -0.119 0.000 0.45 50.3 OK8.000 32 55.431 -0.069 0.000 0.55 9.5 OK8.001 33 55.005 0.015 0.000 1.04 18.7 SURCHARGED9.000 34 55.425 -0.075 0.000 0.50 9.9 OK




8.002 35 54.684 -0.137 0.000 0.32 34.8 OK1.008 TANK 54.574 1.024 0.000 0.94 39.6 SURCHARGED1.009 36 54.584 1.084 0.000 0.85 33.0 SURCHARGED1.010 37 54.624 1.255 0.000 0.55 21.8 SURCHARGED1.011 38 PUMP 54.631 1.573 0.000 9.38 11.2 SURCHARGED1.012 39 56.352 -0.031 0.000 0.98 11.2 OK

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded













Inertia Status ON


720, 960, 1440, 2160, 2880, 4320, 5760,7200, 8640, 10080


PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

1.000 1 15 Winter 100 +20% 30/15 Summer1.001 2 15 Winter 100 +20% 30/15 Summer1.002 3 15 Winter 100 +20% 30/15 Summer1.003 4 15 Winter 100 +20% 30/15 Summer1.004 5 15 Winter 100 +20% 1/15 Summer2.000 6 15 Winter 100 +20% 30/15 Summer 100/15 Winter2.001 7 15 Winter 100 +20% 30/15 Summer 100/15 Winter2.002 8 30 Winter 100 +20% 30/15 Summer2.003 9 15 Winter 100 +20% 30/15 Summer2.004 10 15 Winter 100 +20% 30/15 Summer1.005 11 15 Winter 100 +20% 1/15 Winter1.006 INTERCEPTOR 15 Winter 100 +20% 1/15 Summer1.007 12 360 Winter 100 +20% 1/15 Summer3.000 13 15 Winter 100 +20%3.001 14 15 Winter 100 +20%4.000 15 15 Winter 100 +20%4.001 16 15 Winter 100 +20% 100/15 Summer




PNUS/MHName

OverflowAct.

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


1.000 1 56.775 1.595 0.000 0.47 30.9 FLOOD RISK1.001 2 56.698 1.717 0.000 0.54 35.7 SURCHARGED1.002 3 56.614 1.813 0.000 1.15 59.3 SURCHARGED1.003 4 56.546 1.774 0.000 0.92 60.1 SURCHARGED1.004 5 56.419 1.810 0.000 1.85 91.4 SURCHARGED2.000 6 56.602 1.202 2.177 0.61 35.0 FLOOD2.001 7 56.601 1.251 0.830 0.69 46.2 FLOOD2.002 8 56.574 1.428 0.000 0.66 43.3 SURCHARGED2.003 9 56.548 1.584 0.000 1.60 76.1 SURCHARGED2.004 10 56.477 1.535 0.000 0.47 69.8 SURCHARGED1.005 11 56.281 1.697 0.000 2.68 171.3 SURCHARGED1.006 INTERCEPTOR 55.441 1.073 0.000 3.68 170.8 SURCHARGED1.007 12 55.025 0.827 0.000 1.33 55.7 SURCHARGED3.000 13 55.508 -0.042 0.000 0.87 14.3 OK3.001 14 55.338 -0.059 0.000 0.68 28.6 OK4.000 15 56.622 -0.111 0.000 0.15 7.9 OK4.001 16 55.553 0.190 0.000 0.84 14.0 SURCHARGED

PNUS/MHName

LevelExceeded

1.000 11.001 21.002 31.003 41.004 52.000 6 32.001 7 22.002 82.003 92.004 101.005 111.006 INTERCEPTOR1.007 123.000 133.001 144.000 154.001 16




PNUS/MHName Storm

ReturnPeriod

ClimateChange

First (X)Surcharge

First (Y)Flood

First (Z)Overflow

OverflowAct.

4.002 17 15 Winter 100 +20% 100/15 Summer5.000 18 15 Winter 100 +20% 100/15 Winter5.001 19 15 Winter 100 +20% 100/15 Summer5.002 20 15 Winter 100 +20% 100/15 Summer5.003 21 15 Winter 100 +20% 30/15 Summer5.004 22 15 Winter 100 +20% 30/15 Summer5.005 23 15 Winter 100 +20% 30/15 Summer5.006 24 15 Winter 100 +20% 30/15 Summer4.003 25 15 Winter 100 +20% 30/15 Summer4.004 26 15 Winter 100 +20% 100/15 Summer6.000 27 15 Winter 100 +20%4.005 28 360 Winter 100 +20% 30/120 Winter7.000 29 15 Winter 100 +20%7.001 30 15 Summer 100 +20%7.002 31 360 Winter 100 +20% 100/180 Winter8.000 32 15 Winter 100 +20%8.001 33 15 Winter 100 +20% 30/15 Summer9.000 34 15 Winter 100 +20%8.002 35 360 Winter 100 +20% 100/120 Winter1.008 TANK 360 Winter 100 +20% 1/15 Summer1.009 36 360 Winter 100 +20% 1/15 Summer1.010 37 360 Winter 100 +20% 1/15 Summer1.011 38 PUMP 360 Winter 100 +20% 1/15 Summer1.012 39 15 Winter 100 +20%

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded

4.002 17 55.441 0.268 0.000 0.95 19.3 SURCHARGED5.000 18 56.145 0.020 0.000 0.21 3.4 SURCHARGED5.001 19 56.135 0.143 0.000 0.41 6.6 SURCHARGED5.002 20 56.119 0.232 0.000 0.76 12.8 SURCHARGED5.003 21 56.040 0.390 0.000 0.80 13.0 SURCHARGED5.004 22 56.000 0.490 0.000 1.01 16.6 SURCHARGED5.005 23 55.856 0.506 0.000 1.20 20.0 SURCHARGED5.006 24 55.590 0.430 0.000 1.28 24.1 SURCHARGED4.003 25 55.242 0.295 0.000 1.61 53.4 SURCHARGED4.004 26 55.089 0.199 0.000 1.13 61.5 SURCHARGED6.000 27 55.498 -0.102 0.000 0.23 10.8 OK4.005 28 55.021 0.598 0.000 0.24 15.3 SURCHARGED7.000 29 55.521 -0.054 0.000 0.93 32.5 OK7.001 30 55.399 -0.089 0.000 0.68 65.0 OK7.002 31 55.021 0.168 0.000 0.10 10.9 SURCHARGED8.000 32 55.446 -0.054 0.000 0.71 12.2 OK8.001 33 55.129 0.139 0.000 1.34 24.2 SURCHARGED9.000 34 55.438 -0.062 0.000 0.63 12.6 OK




8.002 35 55.021 0.200 0.000 0.07 7.9 SURCHARGED1.008 TANK 55.020 1.470 0.000 0.94 39.5 SURCHARGED1.009 36 55.028 1.528 0.000 0.85 33.0 SURCHARGED1.010 37 55.035 1.666 0.000 0.55 21.7 SURCHARGED1.011 38 PUMP 55.040 1.982 0.000 9.38 11.2 SURCHARGED1.012 39 56.352 -0.031 0.000 0.98 11.2 OK

PNUS/MHName

Water Level(m)

SurchargedDepth(m)

FloodedVolume(m³)

Flow /Cap.

Overflow(l/s)


LevelExceeded

APPENDIX G

Existing Volumes

The Flood Risk Consultancy Page 120 Church StreetColneLancashire BB8 0LGDate 21/07/2017 11:27 Designed by floodFile Checked byXP Solutions Source Control 2017.1.2

Greenfield Runoff Volume


FSR Data

Return Period (years) 100Storm Duration (mins) 360

Region England and WalesM5-60 (mm) 19.500

Ratio R 0.288Areal Reduction Factor 1.00

Area (ha) 1.840SAAR (mm) 1000

CWI 123.365Urban 0.000SPR 0.450

Results

Percentage Runoff (%) 4.85Greenfield Runoff Volume (m³) 62.037

APPENDIX H

Pollution Control Details

Issue Description Date 04 CC1180 Introduction of NSBE036 May 2014

015319 NSBE010-NSBE125 Class 1 Bypass Separator

Installation & Maintenance Guidelines

Kingspan Environmental Service Contact Numbers: GB: 0844 846 0500 NI: 028 3025 4077 IRL: 048 3025 4077

DS1155 NSBE010-NSBE030 Class 1 Bypass Separators

DS1254 NSBE036 Class 1 Bypass Separator

DS1224 NSBE040 & NSBE050 Class 1 Bypass Separators

DS1225 NSBE075-NSBE125 Class 1 Bypass Separators

Enclosed Documents

015319-04 NSBE010 – NSBE125 Class 1 Separators - Installation & Operation Guidelines

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HEALTH & SAFETY These warnings are provided in the interest of safety. You must read them carefully before installing or using the equipment.

It is important that this document is retained with the equipment for future reference. Should the equipment be transferred to a new owner, always ensure that all relevant documents are supplied in order that the new owner can be acquainted with the functioning of the equipment and the relevant warnings.

Installation should only be carried out by a suitably experienced contractor, following these guidelines.

We recommend the use of a dust mask and gloves when cutting GRP components.

Electrical work should be carried out by a qualified electrician.

Contaminated surface water can contain substances harmful to human health. Any person carrying out maintenance on the equipment should wear suitable protective clothing, including gloves. Good hygiene practice should also be observed.

Access covers should be selected with reference to the location of the unit and traffic loads to be accommodated. These are not (normally) part of the Separator supply.

When covers are removed precautions must be taken against personnel falling into the unit.

Should you wish to inspect the operation of the equipment, please observe all necessary precautions, including those listed below, which apply to maintenance procedures.

Ensure that you are familiar with the safe working areas and accesses. Ensure that the working area is adequately lit.

Take care to maintain correct posture, particularly when lifting. Use appropriate lifting equipment when necessary. Keep proper footing and balance at all times. Avoid any sharp edges.

OIL ALARM SYSTEMS

PPG3 requires that the oil level alarm be fitted, tested and commissioned by a competent Installer. This is to ensure that the excessive oil probe is calibrated correctly, raising an alarm when 90% of the recommended maximum oil storage volume is reached. Should the oil level alarm fail to provide an early warning, excessive oil could pass through the separator, thus polluting the environment. This could result in substantial cleanup costs and legal action being taken under the water resources act 1991.

MAINTENANCE

The correct ongoing maintenance is essential for the proper operation of the equipment. Operators who rely on oil level alarms to prompt them to service separators between maintenance intervals run the risk of polluting should the alarms not work, hence the ongoing functional assessment of the oil alarm systems is fundamental if pollution incidents are to be avoided.

The removal of sediment and retained oil/grease should be carried out by a contractor holding the relevant permits to transport and dispose of such waste. The contractor must refer to the guidelines in this document.


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CONTENTS

Page HEALTH & SAFETY .......................................................................................................................................... 2 1 Introduction ................................................................................................................................................. 5

1.2 Handling & Storage .............................................................................................................................. 5 1.3 Site Planning ........................................................................................................................................ 5

2 Installation .................................................................................................................................................. 6 2.1 Installation – General ............................................................................................................................ 6 2.2 Separator Installation ............................................................................................................................ 7 2.3 Pipework Connections .......................................................................................................................... 7 2.4 Oil Level Alarm Neck Fitting ................................................................................................................. 8 2.5 Alarm Installation .................................................................................................................................. 8

3 Operation .................................................................................................................................................... 9 4 Maintenance ............................................................................................................................................. 10

4.1 Waste Removal and Servicing ........................................................................................................... 10 4.2 Waste Removal Procedure – Oil & Silt ............................................................................................... 10 4.3 Checking the Coalescer Assembly ..................................................................................................... 10 4.4 Removing the coalescer assembly. .................................................................................................... 11 4.5 Cleaning the coalescer assembly/ Media Replacement. ................................................................... 11 4.6 Replacing the coalescer assembly. .................................................................................................... 11

5 Emergencies ............................................................................................................................................ 12 Appendices

Separator Maintenance Log


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5 of 5

1 Introduction 1.1.1 These Guidelines represent Best Practice for the installation of the above Separator Units. Many

years of specialist experience has led to the successful installation of thousands of separator units. It must be noted, however, that these Guidelines are necessarily of a general nature. It is the responsibility of others to verify that they are appropriate for the specific ground conditions and in-service loads of each installation. Similarly, any information or advice given by our employees or agents regarding the design of an installation must be verified by a qualified specialist (e.g. Civil engineering consultant).

1.1.2 For guidance of Separator selection and application, please refer to the most recent issue of Environment Agency Guidelines pollution prevention guidelines No. 3 (PPG3).and BS En 858

1.2 Handling & Storage

1.2.1 Care must be taken to ensure that units are not damaged during delivery and handling on site. Please take care and place unit so that it cannot fall and become damaged

1.2.2 The design requirements of these products will frequently mean that the centre of gravity of the unit is “offset”. Care must therefore be taken to ensure that the unit is stable when lifting. Rainwater may also collect inside units, particularly if they have been stored on site prior to installation, adding weight and increasing instability. Check units before lifting and pump out any excess water.

1.2.3 When lifting units, use webbing slings of a suitable specification. Do not use chains.

1.2.4 A suitable spreader bar should be used to ensure that units are stable and that loads are evenly distributed during lifting. When lifting separators, a spreader bar should be used where the slings would otherwise be at an angle > 30 degrees to the vertical.

1.2.5 Lifting equipment should be selected by taking into account the unit weight, length and the distance of lift required on site.

1.2.6 We accept no responsibility for the selection of lifting equipment.

1.2.7 Whenever units are stored or moved on site, ensure that the storage location is free of rock, debris and any sharp objects, which may damage the unit. The units must be placed on ground, which is flat, and level and the unit orientated onto its side with even support. Do not roll separators.

1.3 Site Planning

The following points should be considered before installation of the equipment:

1.3.1 The discharge must have the consent of the relevant Environmental Regulator.

1.3.2 The installation should have Planning and Building Control approval.

1.3.3 Consider installing flow cut-off valves to isolate the separator in an emergency or during site cleaning operations. See Environment Agency Guidelines PPG3.

1.3.4 We will fit a tube to receive the alarm probe. This tube provides protection and ensures that the probe is positioned at the correct level to sense the oil build up. The tube design and probe level setting assumes the use of our standard oil alarm system and may not be suitable for other alarm supplier’s equipment. The probe tube may be fitted either within the neck or within the body of the unit. It should be extended to ground level when fitted in the body of the tank and you should make provision to extend the tube to the required height before backfilling. Consult the alarm supplier’s instructions for their detailed fitting installation instructions.

1.3.5 Consider venting of the unit. Comply with local regulations. In the UK, comply with the following regulations. For Petrol Stations: Health and Safety Guidance Note 41 (HS(G)41). For other applications: BS8301: 1985 (obsolescent) BS EN 752 Building Drainage. Adequate ventilation should be provided to the separator. The ventilation pipe should be as short as is practicable and be terminated not less than 2.5m above paving nor less than 1m above the head of an openable window or other opening into a building within a horizontal distance of 3m. Each neck should be vented independently, we advise against joining these below ground prior to their rising as vent stacks.

1.3.6 Consider installation of a sampling point downstream of the separator. There is no suitable facility to effectively sample the wastewater from inside the unit.


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1.3.7 Uncontaminated run off such as roof water should be excluded from separators. (EA Guidelines PPG3.)

1.3.8 Ground conditions and water table level should be assessed. If the water table will be above the base of the units at any time of the year, adequate concrete backfill must be provided to avoid flotation. In poorly draining ground, consideration should also be given to the likelihood of flotation due to surface water collecting in the backfill, and an appropriate installation method devised to avoid this.

1.3.9 If the discharge is to a soakaway, a porosity test should be carried out as part of the assessment of suitability for sub-soil drainage.

1.3.10 The separator must be installed at a level, which will allow connection to the incoming drain and a free discharge at the system outlet. The water table must be below the discharge outlet.

1.3.11 Do not install the unit deeper than necessary, ensure that you purchase extension shaft kits. The minimum invert depth of the unit is shown on the customer drawing.

1.3.12 Adequate access must be provided for routine maintenance. Vehicles should not be permitted within a distance equal to the depth of the unit, unless suitable structural protection is provided to the installation.

1.3.13 There must be at least 1 metre of clear, level ground all around the access covers to allow for routine maintenance.

1.3.14 It is essential that a mains water supply is accessible for routine cleansing and refilling after removal of waste material and liquid.

1.3.15 Provide electrical supply for alarm system.

1.3.16 Installation should only be carried out by suitably qualified and experienced contractors in accordance with current Health and Safety Regulations. Electrical work should be carried out by a qualified electrician, working to the latest edition of IEE wiring regulations.

1.3.17 This unit is designed to operate with gravity in and out flows. The unit is not designed to operate with a pumped influent.

2 Installation 2.1 Installation – General

2.1.1 When units are installed in unstable ground conditions where movement of the surrounding material and/or unit may occur, the connecting pipework should be designed to minimise the risk of damage from differential movement of the unit(s) and/or surrounding material.

2.1.2 For separators with burial depths greater than 1000mm from cover level to the top of the unit, specific site conditions should be taken into consideration and the backfill designed to bear any loads which may be applied during and after installation to prevent the tank being subjected to these loads.

2.1.3 The excavation must be deep enough to provide bedding and cover depth as determined by the type of surface pavement and loading. Asphalt and concrete pads should extend a minimum of 300mm horizontally beyond the unit in all directions.

2.1.4 In situations where the excavation will not maintain a vertical wall, it will be necessary to shore up the sidewalks of the excavation with suitable trench sheets and bracing systems to maintain a vertical wall from the bottom to the top of the excavation. DO NOT completely remove the shoring system until the backfilling is complete, but before the concrete fully hardens.

2.1.5 In areas where the water table is above the bottom of the excavation and/or the excavation is liable to flood, the excavation should be dewatered using suitable pumping equipment and this should continue until the installation is complete.

2.1.6 During installation care must be taken to ensure that the body of the unit is uniformly supported so that point loads through the unit are avoided.

2.1.7 The concrete Specification is not a site specific installation design.


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GENERAL CONCRETE SPECIFICATION IN ACCORDANCE WITH BS EN 206-1 ( BS 8500-1)

TYPE OF MIX (DC) DESIGN

PERMITTED TYPE OF CEMENT BS 12 (OPC): BS 12 (RHPC): BS 4027 (SRPC)

PERMITTED TYPE OF AGGREGATE (coarse & fine)

BS 882

NOMINAL MAXIMUM SIZE OF AGGREGATE 20 mm

GRADES: C25 /30

C25 /30

C16 /20

REINFORCED & ABOVE GROUND WITH HOLDING DOWN BOLTS REINFORCED (EG. FOR HIGH WATER TABLE) UNREINFORCED (NORMAL CONDITIONS)

MINIMUM CEMENT CONTENT

C30 C20

270 - 280 Kg/M3 220 - 230 Kg/M3

SLUMP CLASS S1 (25mm)

RATE OF SAMPLING READY MIX CONCRETE SHOULD BE SUPPLIED COMPLETE WITH APPROPRIATE DELIVERY TICKET IN ACCORDANCE WITH BS EN 12350-1

NOTE: STANDARD MIXES SHOULD NOT BE USED WHERE SULPHATES OR OTHER AGGRESSIVE CHEMICALS EXIST IN GROUND WATER

2.2 Separator Installation

2.2.1 Excavate a hole of sufficient length and width to accommodate the tank and a minimum 225mm concrete surround and to a depth, which allows for the burial depth of the unit plus concrete base slab and haunch.

2.2.2 Construct a suitable concrete base slab appropriate to site conditions. Ensure that the slab is flat and level.

2.2.3 When the concrete base slab has set enough to support the installed load, add a concrete haunch so as to provide even support under the unit and then lower the unit onto the haunch using suitable webbing slings and lifting equipment.

2.2.4 Pour no more than 300-mm depth of clean water into the unit, avoiding shock loads. For units with more than one chamber, add water to each chamber simultaneously. DO NOT OVERFILL; the unit is not designed to hold water whilst unsupported.

2.2.5 Place concrete backfill to approximately 300mm depth under and to the sides of the tank ensuring good compaction to remove voids. DO NOT use vibrating pokers. Continue adding concrete backfill, simultaneously keeping the internal water level no more than 200 mm above the backfill level at all times, until the backfill is just below the underside of the outlet drain, giving sufficient room to connect the inlet and outlet pipework.

2.2.6 Connect inlet and outlet drains and vent pipes when safe access to the backfill can be gained.

2.3 Pipework Connections

2.3.1 In all cases, ensure that the outlet pipework level is maintained for correct operation. (Unless specified on the order, the fall across the unit will be as per the customer drawings).

2.3.2 Small units are generally fitted with PVCu spigots to both the outlet and the inlet.

2.3.3 Connect using the same size PVCu socket or a suitable reducer.

2.3.4 Larger units are generally fitted with Our GRP manufactured sockets.

2.3.5 The connecting pipework should be pushed into the socket. Ensure that the seal is secure and watertight before backfilling the pipe.


8 of 8

2.3.6 Alternatively, proprietary flex seal couplings can be obtained to fit over the outside of the site pipework and the outside of the GRP socket. When using this connection method, please be aware that the outside GRP laminate is not perfectly regular and that you may need to use a sealant on the outside diameter of the GRP. Take care not to over tighten the coupling when connecting to the GRP and ensure that the seal is secure before backfilling the pipe. Drawing 403144 provides the ID of our Bypass GRP sockets. The OD is variable, as the wall thickness can be up to 15-20 mm. If purchasing a flexseal coupling for use with clay /concrete, we suggest that a size 110 mm larger than the ID is selected.

2.4 Oil Level Alarm Neck Fitting

2.4.1 We will fit a tube to receive the oil alarm probe. This provides protection and ensures that the probe is positioned at the correct level to sense oil build up.

2.4.2 See alarm supplier information and ensure that the probe is placed within the tube and can be accessed from ground level.

2.4.3 Continue backfilling with concrete over the tank body to the required level. Build up a shell of concrete, minimum 225mm thick, around the access shaft(s). Temporarily strut the access shaft to avoid distortion.

2.4.4 Where we supply an extension shaft to meet a deeper invert requirement, a coalescer extension tube will be required. When fitting, ensure that the tube is extended to just below the surface so that the coalescer can easily be removed. Remove the coalescer from the unit before adding the extension tube. When refitting, ensure that the coalescer is correctly inserted and fully pushed into the base fitting. This is important and you must ensure that the coalescer is correctly located before putting the unit in to operation. Reattach the bracket to the extended neck so it lines up with the hole in the coalescer.

2.4.5 It is advisable to seal the joints on the extension shafts (particularly on sites with high ground water) with proprietary sealant or by GRP lamination. Temporarily strut the extension neck(s) to avoid distortion during back filling. Where more than one neck section is required to suit a deep invert, consider back-filling section by section. If the extension neck is too long, it can be trimmed using a fine-toothed saw. The original fixing hole bolting the coalescer to the neck should be sealed.

2.4.6 Ensure that the vent socket if cut out, is replaced elsewhere. The maximum recommended inlet invert is 2000mm (using 500mm long extension sections). If you are installing a unit deeper than this then you must make your own arrangements for removing and replacing the coalescer. Consideration must be given to the depth of lift involved.

2.4.7 Continue back-filling, ensuring minimum 225mm concrete thickness around the access shaft/ extension neck and alarm access tube (as applicable).

2.4.8 Mains powered Alarm Systems. See alarm suppliers installation instructions. Lay 82mm diameter PVCu underground ducting between the alarm panel location and the alarm probe position. The ducting should be 500mm below ground level and fitted with a drawstring for later cable insertion. Any changes of direction should be by long radius bend. If necessary, drill a suitable hole in the access shaft adjacent to the alarm probe terminal box, to accept the ducting and seal.

2.4.9 In traffic areas a suitable top slab must be constructed. The top slab should bear on a suitable foundation to prevent superimposed loads being transmitted to the unit and access shafts. Loads applied to covers and frames must bear on the top slab, not the access shaft.

2.4.10 The unit should be filled with clean water up to the invert level of the outlet pipe. Ensure the unit identification is placed/ marked inside the neck for future information. The unit is now ready for use.

2.5 Alarm Installation

2.5.1 Install the alarm probe and control panel, as per the Suppliers Alarm Installation Guidelines. Ensure that the probe is positioned correctly for the required storage of oil. The table below indicates the maximum volume of oil to be stored and the depth of floating oil expected in the separation chamber.


9 of 9

Unit Required Minimum Oil Storage volumes

in litres

Max. (100%)Depth of floating oil (Static)

NSBE010 150 litres 320mm











3 Operation 3.1.1 The unit is sized on treating a defined area and rainfall (5 mm/hour) EN.858 Part 1 and using the

factor provided in the Environment agency guidelines PPG3. (0.0018 = 6.5mm/hr) The unit will treat the entire flow i.e. NSBE015 will treat a flow of 15 litres per second. If the flow is greater than this then the excess flow will bypass the main treatment chamber. A NSBE015 unit will work in bypass mode over 15 and up to 150 litres per second. Flows in excess of this will back up on to the site. During a storm, the rain falls and flushes any surface debris, silt or oil into the tank. This first flush, up to the maximum rated flow is fully treated. As the severity of the storm increases, so does the rate of flow increase. The liquid entering the separator after the first flush tends to be cleaner and so, in lower risk applications, is allowed to bypass the oil separation chamber for directly discharge.

3.1.2 The bypass unit has three chambers. The entire flow up to the units listed flow rating is fully treated and passes through all chambers. (E.g. NSBE015 treats 15 litres per second.)

3.1.3 Flows in excess of this rating will bypass the separation chamber and the liquid passes untreated to the outlet chamber.

3.1.4 The first chamber will accumulate silt and grit. The maximum volume that can be retained is the rating x 100 e.g. a NSBE015 is capable of holding 1500 litres of silt.

3.1.5 The second / separating chamber is sized to separate oil at the rated flow rate and to accumulate the required oil storage volume. A NSBE015 maximum oil storage volume is 225 litres. An oil probe should be positioned to detect the accumulation of oil when there is no or low flow conditions. The probe should be positioned so that the alarm operates at 90% of the rated oil storage volume.

3.1.6 In bypass flow conditions, the flow moves directly from the inlet to the outlet chamber avoiding the separating chamber.

3.1.7 Separators are purchased as Class 1 units. Class 1 Bypass Separators are fitted with a removable coalescer which also includes media to further improve the discharge quality. The coalescer media requires maintenance.

3.1.8 Bypass Class 1 Separators are not effective for the removal of soluble or emulsified pollutants such as oil/detergent mixes found in vehicle wash effluents. With permission such discharges should be drained to the foul sewer. Consult our technical department for Separation equipment to meet these applications.


10 of 10

4 Maintenance 4.1 Waste Removal and Servicing

4.1.1 Separated light liquid must be removed from separator when the oil capacity has been reached.

4.1.2 An oil level alarm system is available for purchase which gives warning when the separated light liquid/water interface level reaches 90% of the maximum recommended oil storage volume.

4.1.3 Separators should be inspected at least every six months or more frequently if experience dictates. A log should be maintained detailing the depth of oil found, any oil volume removed and any silt removal or cleaning carried out. A specimen maintenance log is included in the appendices.

4.1.4 Every site is different, in respect to the amount and type of silt generated by the drain design and installation. Frequently, the construction programme itself generates large and perhaps unusual quantities of silt and grit. We do recommend that following the initial installation, an inspection of the separator contents be made to check that building rubble has not entered the unit. Further inspections at 3 and 6 months should be made so as to be able to assess the volumes of silt and oil accumulated. The inspection and emptying programme can then be defined following the first 6 months site experience. We recommend leaving a maximum interval between inspections of 6 months.

4.1.5 Alarm probes should be removed and cleaned with water whenever waste material is removed from the separator. Please note the alarm may alert until the liquid level is replaced.

4.1.6 Separator waste is a “special waste” under the terms of The Waste Management Code of Practice. The Code imposes a duty of care on the waste producer to ensure that the Cleansing contractor is registered with the Environment Agency and that the final disposal of the waste is to a licensed facility.

4.1.7 You should consider the purchase of a maintenance service, which includes bi-annual inspections, removal of oil and silt, cleaning of the alarm probe and cleaning or replacement of the coalescer (where appropriate).

4.2 Waste Removal Procedure – Oil & Silt

4.2.1 Oil can only be effectively removed when there is no flow entering the unit. Isolate the unit and prevent flow from entering. Always remove the oil before attempting to remove the coalescer. If this is not done, when the coalescer is withdrawn the oil can coat the media surface and when replaced the oil may be forced through the media, contaminating the effluent.

4.2.2 Remove the access cover and lower the desludging hose in to the separation chamber. Draw off the surface oil.

4.2.3 If removing the silt, lower the desludge hose to the base of the tank and empty the contents of the chamber. Ensure that you access and clean both the inlet and the separation compartments.

4.2.4 Remove the alarm probe, if fitted, clean with water and replace.

4.2.5 Consider the period of time that the coalescer has been installed and consider removing and inspecting (cleaning or replacing) the coalescer media. If removed, ensure that it is correctly replaced and secured into position. Replace the access covers. It is best to lower the water level to aid re-fitting.

4.2.6 Re-fill the separator with clean water up to the outlet level.

4.2.7 If an alarm is fitted, it will display an alarm condition until the separator is re-filled. Check alarm operation when unit full.

4.3 Checking the Coalescer Assembly

4.3.1 Coalescers, where fitted, may be cleaned periodically to maintain efficiency. Coalescers should be checked following a major incident and replaced if necessary. Please contact us if you wish to purchase the coalescer media.

4.3.2 Identify the type and size of separator (shown on labels inside the access neck).


11 of 11

4.3.3 Assemblies weighing less than 25 Kg may be removed by hand. Heavier assemblies should be lifted by mechanical means. Any lifting device employed must be capable of lifting:

4.3.3.a In excess of the maximum assembly weight.

4.3.3.b The assembly completely out of the access shaft.

4.3.3.c Giving a smooth and controlled lift.

4.3.3.d Swinging the assembly to one side clear of the access shaft.

Unit Dry Weight (Kg)

Wet Weight (Kg)

Silted Weight (Kg)

NumberWithin

unit

Replacement Media Part No.

NSBE010 5.7 kg ≈50 kg ≈60 kg 1 402862

NSBE015 6.2 kg ≈55 kg ≈65 kg 1 402864

NSBE020 6.2 kg ≈55 kg ≈65 kg 1 402864

NSBE025 12.0 kg ≈65 kg ≈75 kg 1 402866

NSBE030 12.0 kg ≈65 kg ≈75 kg 1 402866

NSBE036 14.0 kg ≈65 kg ≈75 kg 1 402718

NSBE040 21.0 kg ≈100 kg ≈200 kg 1 402885

NSBE050 21.0 kg ≈100 kg ≈200 kg 1 402885

NSBE075 21.0 kg ≈100 kg ≈200 kg 2 402885

NSBE100 21.0 kg ≈100 kg ≈200 kg 2 402885

NSBE125 21.0 kg ≈100 kg ≈200 kg 3 402885

4.3.4 Ensure that the area around the access shaft is clear and that there is space to place the assembly once removed. If space is not available it will be necessary to support the assembly over the access shaft. e.g. by scaffold poles and platform.

4.3.5 Only remove the access cover when necessary to remove the assembly. Do not leave the access shaft uncovered and unattended.

4.4 Removing the coalescer assembly.

4.4.1 Undo and remove the bracket which secures the coalescer to the access shaft.

4.4.2 Lift the assembly with a smooth and steady motion. Coalescers will become lighter as water drains from the exposed media. Allow the water to drain completely. Assemblies blocked with fine silt may be very heavy.

4.4.3 Fully extract the assembly and set it down adjacent to the access shaft.

4.5 Cleaning the coalescer assembly/ Media Replacement.

4.5.1 Hose down the assembly using clean water at normal pressure. If the media is heavily contaminated with oil and silt, it may not be possible to clean it effectively by hosing. Do not allow untreated cleaning water to pass out of the unit. Continue hosing until the water runs clear.

4.5.2 To replace the media, undo the banding. Slide media off the core tube and slide new media on. Ensure all the apertures on the core tube are covered by the media. Re-secure or replace banding. Consider replacing media and banding every two years.

4.6 Replacing the coalescer assembly.

4.6.1 Position it over the access shaft.

4.6.2 Lower the assembly steadily into the access shaft ensuring that the end locates within the sump at the bottom of the tank. Re-secure the bracket.

4.6.3 Replace the access cover.


12 of 12

5 Emergencies 5.1.1 At sites where there is a high risk of spillage, spill kits containing drain seals, absorbent materials,

disposal containers and other appropriate equipment should be held. In the event of a spillage on site, the material should be contained, (if a spill kit is not available, sand or soil may be used) and the Environment Agency notified immediately using the appropriate emergency hotline number listed in the Agency Guideline PPG3. Year 2011 - 0800 80 70 60

6 Warranty

The company will replace or, at its option, properly repair without charge any goods which are found to be defective and which cause failure in normal circumstances of use within a period of twelve months from the date of delivery. This warranty is conditional upon:

(a) the Buyer notifying the Company of any claim within Seven days of the failure becoming discernible.

(b) the Company being allowed a reasonable opportunity to inspect the goods so as to confirm that they are defective.

(c) the goods not having been modified, mishandled or misused and being used strictly in accordance with any relevant instructions issued by the Company.

The Company’s liability under this Clause is limited to the repair or replacement of the defective goods, and does not cover costs of transport, installation or associated site costs, if applicable.

The Company’s liability to replace or repair the goods is in lieu of and excludes all other warranties and conditions, and in particular (but without limitation) the Company shall have no liability of any kind for consequential loss or damage.

For any further advice, please us.

A warranty form is included in this package, to register your unit for warranty. Please complete ALL sections of the form, and return it at your earliest convenience.


13 of 13

SEPARATOR MAINTENANCE LOG

Site address/location ..................................................................................................................................

..................................................................................................................................

Separator location ..................................................................................................................................

..................................................................................................................................

Type of separator ..................................................................................................................................

Nominal Flow ..................................................................................................................................

Total capacity ..................................................................................................................................

Inspection/ Maintenance

Date

Comments

Waste Volumes Removed

(if appropriate)

EXTENSION PARTS(IF REQUIRED)INCLUDED IN

PRODUCT CODE

Ø110 PVCuVENT PIPE

750

DIM.'H'

250

DIM. 'G'

�INLET OUTLET

ALARM PROBE TUBE

�

DIM. 'B'

DateIssue

Please check with Kingspan Environmental that this drawing is the latest issue

STANDARD. PLEASE CONSULT OUR SALES DEPARTMENT FOR DETAILSDIFFERENT SIZE CONNECTIONS MAY NOT BE FULLY COMPLIANT WITH THEEN858-1 STATES MINIMUM CONNECTION SIZES, UNITS ORDERED WITHAND ORIENTATION SHOWN ON THE DRAWING. THE STANDARD

1. UNITS ARE SUPPLIED WITH THE STANDARD (MINIMUM) PIPEWORK SIZE,NOTES

Drawn by Approved by Description

06 11.11.14 T.Kelly CC1191 - Alarm Probe Tube Re-Positioned

05 24.06.13 T.Kelly CC1131 - Case Feet Changed

EXTENSION PARTS FOR DEEPER INVERTS CAN BE PROVIDED FOR ON SITE

THIS DRAWING SHOULD BE USED FOR DIMENSIONAL INFORMATION ONLY.TO SUIT APPLIED LOADINGS.

ALL UNITS SUPPLIED ARE CLASS 1 AND INCLUDE A COALESCER.

ALL UNITS REQUIRE APPROPRIATE CONCRETE BASE, COVER AND FRAMEASSEMBLY.

4.

2.

5.A Ø76mm TUBE IS SUPPLIED TO HOUSE AN OIL ALARM PROBE.

PIPEWORK.

3.

6.

OF AVAILABLE OPTIONS, BUT PLEASE NOTE WE DO NOT ALTER INTERNAL

UNITNOMINALFLOW (l/sec.)

DIM.'A' DIM.'B' DIM.'C' DIM.'D' DIM.'E' DIM.'F' DIM.'G' DIM.'H'STD. PIPEØ

APPROX. EMPTYWEIGHT (kg)

FALL ACROSSUNIT

NSBE010 10.0 2070 1095 1450 1350 700 800 2150 1220 315 160 100NSBE015 15.0 2950 1560 1450 1350 700 800 2150 1220 315 200 100

NSBE020 20.0 3893 2016 1450 1350 700 800 2150 1220 375 220 100NSBE025 25.0 3575 1900 1680 1580 700 800 2380 1420 375 300 100NSBE030 30.0 4265 2263 1680 1580 700 800 2380 1420 450 325 100

Surface Area :

Thickness : n/a

Weight :

Finish : Page 1 of 2

the written permission of Kingspan Environmental.

Scale: Not to scaleAll dimensions in mm

Tolerance : Material : VariousDrawing : DS1155

R:\Drawing Data\02 - Sales Drawings\DS\DS - 11\DS1155

Kingspan Environmental reserve theright to alter the details of this drawing without prior notice.

This drawing is copyright and may not be reproduced or used without

NSBE010 - NSBE030 Bypass Separators

��IN

LET INVERT

OUTLET INVERT

DIM. 'C'

DIM. 'E'

DIM.'D'

DIM. 'A'

DIM. 'F'

�

�

�

�

�

OPTION KOPTION H

�

�

OPTION A

OPTION G

OPTION B OPTION C

OPTION D OPTION E OPTION F

�

�

�

�

�

�

�

�

�

�

�

Pipe Orientation Options

Third Angle Projection

Scale: Do Not ScaleAll Dimensions In mm

Tolerance (unless stated) : Material : Various

NSBE010 - 030 BYPASS SEPARATORS

Drawing : DS1155Finish :

Weight : 222.62 Kg

Thickness : n/a

Surface Area : m²

Page 2 of 2

Modelled By :

R:\Drawing Data\02 - Sales Drawings\DS\DS - 11\DS1155


This drawing is copyright and may not be reproduced or used withoutthe written permission of Kingspan Environmental

OUTLET

INLET

� �INLET OUTLET

�

ALTERNATIVE

POSITION

ALTERNATIVE

POSITION

�

ALTERNATIVE

POSITION

�

OUTLETPOSITION

ALTERNATIVEINLET

�

Please Note:-Due to the physically small size of the NSBE010,the inlet pipe, all orientation options, is fitteddirectly into this turret.

APPENDIX I

Pump Details

Direction of Discharge

Please check with Kingspan Environmental that this drawing is the latest issueIssue Date Drawn by Approved by Description

01 07/09/09 JMcM Initial Release

Non Standard Inverts Available:Ø1.8 x 3.0m - 11, 12, 13, 14, 19Ø1.8 x 4.0m - 11, 12, 13, 14, 19, 21, 22, 23, 29Ø2.6 x 3.3m - 11, 12, 13, 14, 21, 22Ø2.6 x 4.0m - 11, 12, 13, 14, 21, 22, 29

CaseDiamerer

'C'

Outlet Invert

'D'

Case Depth 'B' Inlet Invert 'A'Inlet

Size 'E'20(2.0m)

30(3.0m)

33(3.3m)

40(4.0m)

10(1.0m)

15(1.5m)

20(2.0m)

24(2.4m)

30(3.0m)

18(1.8m) 0.7m

o o110mm160mm200mm225mm250mm315mm

o o o o

o o o o o o

2.6(2.6m) 0.7m

o o o o

o o o o o

or Flange Fitting

Non Return Valve

Isolation Valve

High Level

Safety Plate

Supplied

Pump Lifting Chains

2 no. Lifting Eyes

Alarm Float

Casing

Sewage Pumps

Pump Chamber

Pedestal Kit

Stop Float

Assist Float

Start Float

and Frame

Pump Guide Rails

Access Cover

OutletCompresssion

Notes:

Pumpwell delivered with pumps & Floats not installed to avoid damage in transit.•Pumps to be coupled to chains with shackles supplied on lifting chain which is connected to unistrut assembly.•Read Operating and Installation guidelines before installing.•

Out

let I

nver

t 'D

'

Cas

e D

epth

'B'

700

Duc

t

Case Diameter 'C'

Inle

t Inv

ert '

A'

Inle

t Size

'E'

225°

270°

315°

0°

45°

90°

135°

180°Inlet Orientation

(Duct positioned @ 180°)

Tolerance :

Weight : 267.48 Kg Kgs

All dimensions in mm Scale: Not to scale

Material : Various Drawing : DS1015

S:\Engineering Projects\881N - Ø1.8 & Ø2.6 Vertical Pumpstation Review\Sales Drawings\DS1015

Surface Area : Thickness : n/a

Twin Sewage Pump Chamber Sales Drawing

the written permission of Kingspan Environmental.

Finish :


This drawing is copyright and may not be reproduced or used without

Page 1 of 1

013540 INSTALLATION, OPERATING & MAINTENANCE GUIDELINES

FOR PACKAGE PUMPSTATIONS EFFLUENT / SEWAGE & GRINDER APPLICATIONS

Kingspan Environmental Service Contact Numbers: GB: 0844 846 0500 NI: 028 3025 4077 IRL: 048 3025 4077

Ø1.

0

Ø1.

2

Ø1.

8

Ø2.

6

EFFLUENT APPLICATIONS

DS1065P DS1062P

Single Effluent Pump Chamber Sales Drawing Twin Effluent Pump Chamber Sales Drawing

DS1059P DS1056P


DS1022P DS1017P


SEWAGE APPLICATIONS

DS1063P DS1060P

Single Sewage Pump Chamber Sales Drawing Twin Sewage Pump Chamber Sales Drawing

DS1057P DS1054P


DS1020P DS1015P


GRINDER APPLICATIONS

DS1064P DS1061P

Single Grinder Pump Chamber Sales Drawing Twin Grinder Pump Chamber Sales Drawing

DS1058P DS1055P


DS1021P DS1016P


FLOATS

DS0778P Float Information Sales Drawing

IIssssuuee DDeessccrriippttiioonn DDaattee 0066 CCCC OOccttoobbeerr 22001122

Enclosed Documents

013540 GL0070P-06 – Installation, Operation & Installation Guidelines for Package Pump Stations

Page 2

HEALTH & SAFETY

THESE WARNINGS ARE PROVIDED IN THE INTEREST OF SAFETY. YOU MUST READ THEM CAREFULLY BEFORE INSTALLING OR USING THE EQUIPMENT.

It is important that this document is retained with the equipment for future reference. Should the equipment be transferred to a new owner, always ensure that all relevant documents are supplied in order that the new owner can be acquainted with the functioning of the equipment and the relevant warnings.

INSTALLATION SHOULD ONLY BE CARRIED OUT BY A SUITABLY EXPERIENCED CONTRACTOR, FOLLOWING THESE GUIDELINES. ELECTRICAL WORK SHOULD BE CARRIED OUT BY A QUALIFIED ELECTRICIAN.

Sewage and sewage effluent can contain substances harmful to human health. Any person carrying out maintenance on the equipment should wear suitable protective clothing, including gloves. Good hygiene practice should also be observed.

When covers are removed precautions must be taken against personnel falling into the unit.

Should you wish to inspect the operation of the equipment, please observe all necessary precautions, including those listed below, which apply to maintenance procedures.

Ensure that you are familiar with the safe working areas and accesses & that the working area is adequately lit.

Take care to maintain correct posture, particularly when lifting. Use appropriate lifting equipment when necessary. Keep proper footing and balance at all times. Avoid any sharp edges.

The removal of sediment should be carried out by a contractor holding the relevant permits to transport and dispose of such waste. The contractor must refer to the guidelines in this document.

AS WITH ALL SITE WORK, THE DANGERS OF WORKING WITH WATER AND ELECTRICITY POSE SEVERE THREATS TO HEALTH, IF OBVIOUS AND FUNDAMENTAL PRECAUTIONS ARE NOT TAKEN. THEREFORE IF YOU ARE IN ANY DOUBT REGARDING ANY OF THE FOLLOWING, PLEASE DO NOT HESITATE TO CONTACT US.

CONTENTS

HEALTH & SAFETY …………………………………………………………………………………………………………2

1. System Overview…………………………………………………………………………………………...………3

1.1 Site Delivery Checklist ………………………………………………………………………..…………4

2 Operating Guidelines …………………………………………………………………………………..………….5

2.1 Introduction …………………………………………………………………………………….…………5

2.2 Handling and Storage ………………………………………………………………………….………..5

3 Chamber Installation ……………………………………………………………………………….……………..5

4 Important Notes ……………………………………………………………………………………..……………..7

5 Operational Descriptional ……………………………………………………………………….………………..7

5.1 Pump Control Panels ………………………………………………………………………..…………..7

6 General Maintenance …………………………………………………………………………………….……….8

7 How to Keep your Pump Station Running Sweetly ……………………………………………………………8

8 Warranty……………………………………………… ……………………………………………………………9


Page 3

1 System Overview.

Pictorial representation below indicates basic requirements for a standard system, please note not all of the items required are supplied from us as standard.

Kiosk – Control Panel Housing (if Applicable)

Inlet Pipe -Clients Supply

Concrete Plinth

Concrete Plinth

MDPE Rising Main – Clients supply

Ø110mm Cable Duct – Clients supply

Pump Chamber Casing

Pump Chamber Access Cover

Float Switches

Pumps

Pump Lifting Chain

Non Return Valves

Isolation Valve

Safety Plate


Page 4

1.1 Site Delivery Check List. The delivery ticket will have 4 no. items listed that will need to be checked against items actually delivered. Each item will be clearly identified as per list below.


Page 5

2 Operating Guidelines

2.1 Introduction

2.1.1 These Guidelines represent Best Practice for the installation of the above packaged pump stations (waste water application). It must be noted, however, that these Guidelines are of a general nature. It is the responsibility of others to verify that they are appropriate for the specific ground conditions and in-service loads of each installation. Similarly, any information or advice given by employees or agents of the company regarding the design of an installation must be verified by a qualified specialist (e.g. Civil engineering consultant).

2.2 Handling & Storage

2.2.1 Care must be taken to ensure that units are not damaged during delivery and handling on site. Please take care and place unit so that it cannot fall and become damaged.

2.2.2 The design requirements of the product will frequently mean that the centre of gravity of the unit is “offset”. Care must therefore be taken to ensure that the unit is stable when lifting and that loads are evenly distributed during lifting.

2.2.3 Lifting equipment should be selected by taking into account the unit weight, length and the distance of lift required on site.

2.2.4 We accept no responsibility for the selection of lifting equipment.

3 Chamber Installation

3.1.1 Select a suitable location for the chamber. This will normally be at the lowest ground level on the site so that the facilities can be drained into the chamber.

3.1.2 Check that no other structure - or special access - is required over the selected position. Provision can be made, if necessary, to place the chamber in a roadway, provided that the backfill, cover slab and access cover are designed in accordance with the anticipated loads.

3.1.3 Check that no underground cable, pipe or service duct lies beneath the selected position.

3.1.4 Excavate the minimum opening in the ground to receive the pump chamber and pipework to be used. This opening must allow for a minimum of 250mm of concrete around the chamber.

3.1.5 The depth of the excavation needs to be at least 150mm deeper than the overall tank depth.

3.1.6 If a machine is used to remove the soil, then the sides of the excavation should be battered for stability and a sump left should it be necessary to dewater.

3.1.7 If it is dug by hand, the sides will need shoring up for safety, to prevent earth slippage.

3.1.8 A de-watering pump may be required to control any ground water present.

3.1.9 Place in position the concrete base, minimum thickness 150mm of concrete and allow to set.

3.1.10 Lower the pump chamber onto the dried concrete, ensuring that the inlet and outlet pipes are correctly aligned.

3.1.11 The unit then should be backfilled with either mass concrete, or a lean mix in areas where ground conditions are wet or unstable.The minimum surround thickness for this backfill should be 150mm.

3.1.12 In all instances the pumpchamber must be filled with clean water to keep pace with the backfilling process, this is in order to equalize the pressures exerted onto the unit and prevent the possibility of chamber deformation or flotation during installation.


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3.1.13 Ø1.2 Vertical Pump Chambers Only

1. Assemble the holding down brackets into the holding down hooks as shown in illustration.

2. Place concrete back-fill to approximately 1 metre above the

unit base, ensuring good compaction to avoid voids. Do not use vibrating pokers.

3.1.14 All Pump Chambers: Connect up the site pipework (supplied by others) to the inlet and outlet connections of the pump chamber.

3.1.15 Finish off the surface of the excavation to the required level, depending on the final surface finish required.

3.1.16 The Concrete Specification is not a site-specific installation design.

GENERAL CONCRETE SPECIFICATION IN ACCORDANCE WITH BS EN 206-1 (BS 8500-1)

TYPE OF MIX (DC) DESIGN

PERMITTED TYPE OF CEMENT BS 12 (OPC): BS 12 (RHPC): BS 4027 (SRPC)

PERMITTED TYPE OF AGGREGATE (coarse & fine)

BS 882

NOMINAL MAXIMUM SIZE OF AGGREGATE 20 mm

GRADES: C25 /30

C25 /30

C16 /20

REINFORCED & ABOVE GROUND WITH HOLDING DOWN BOLTS

REINFORCED (EG. FOR HIGH WATER TABLE)

UNREINFORCED (NORMAL CONDITIONS)

MINIMUM CEMENT CONTENT

C30

C20

270 - 280 Kg/M3

220 - 230 Kg/M3

SLUMP CLASS S1 (25mm)

RATE OF SAMPLING READY MIX CONCRETE SHOULD BE SUPPLIED COMPLETE WITH APPROPRIATE DELIVERY TICKET IN ACCORDANCE WITH BS EN 12350-1

NOTE: STANDARD MIXES SHOULD NOT BE USED WHERE SULPHATES OR OTHER AGGRESSIVE CHEMICALS EXIST IN GROUND WATER


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4 Important Notes

4.1.1 When positioning the chamber please check that your electrician has provided sufficient cable to allow the control panel to be placed in the required position.

4.1.2 It is most important that once the chamber is in position, with all the inlet connections made and before installing the pumps, that the drainage system is flushed through and all sand, debris etc. is removed from the chamber.

4.1.3 FAILURE TO DO THIS MAY INVALIDATE THE WARRANTY ON THE PUMPSETS

4.1.4 A cable duct is required, free from sharp bends, minimum diameter 75mm.

Additional Notes

4.1.5 If the chamber is going to be subjected to traffic & or vehicle loads, it is essential that a cover slab is constructed so there is no direct load onto the chamber. Also a suitably rated access frame and cover must be obtained, and installed in such a manor that no loads bear directly onto the neck of the chamber.

4.1.6 When using a concrete backfill it is important to ensure that the mix is not to wet as this may exert floatation pressure on the pumpchamber.

4.1.7 In all instances the pumpchamber must be filled with clean water to keep pace with the backfilling process, this is in order to equalize the pressures exerted onto the unit and prevent the possibility of chamber deformation or flotation during installation.

IF IN DOUBT PLEASE CONTACT US FOR ADVICE.

IT SHOULD BE NOTED THAT THIS INFORMATION IS FOR GUIDANCE PURPOSES ONLY. IT IS THE RESPONSIBILTY OF THE CONTRACTOR TO ENSURE THAT THE INSTALLATION IS CARRIED OUT TO THE SATISFACTION OF YOUR REGULATING LOCAL WATER AUTHORITY, IN ACCORDANCE WITH THE PREVAILING GROUND CONDITIONS.


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5 Operational Description

5.1 Pump Control Panels

5.1.1 Twin Pump Panels are designed to operate from 4 float switches i.e. stop / start / duty - standby & high level alarm. Single Pump Panel installations are designed to operate on 3 float switches start / stop & high level alarm.

5.1.2 Each pump may be run on its own by operating the respective “manual” switch mounted on the door.

5.1.3 In “auto” the pumps will run under float switch control.

5.1.4 As the level rises the stop float contacts will close. When the start float switch contact closes, the duty pump will start. This pump will continue to run until the level falls below the stop float switch.

5.1.5 After each pump cycle the duty pump is alternate so that the other pump becomes the duty pump the next time the level reaches the duty pump start float.

5.1.6 Should the duty pump have failed or is running and the level continues to rise to the duty /standby pump start float, the second standby pump will start and continue to run until the level falls below the stop float switch.

5.1.7 If the level continues to rise to the high level float, the high-level alarm light will illuminate. This alarm may be reset once the level is below the high-level float switch. Under high level conditions this lamp will be illuminated to indicate that there is either a pump failure or that the volume of influent is exceeding the discharge capability of the pump. The high level alarm / beacon will need to be manually reset by the site operator once the cause of the high level condition has been identified and resolved.

5.1.8 Cable access is available from both the top & bottom end of the panel. Additional access can be gain from the sides but must be suitably glanded. The control panel has an IP54 rating. The cabling work and glanding to the panel needs to meet the same standard to maintain this rating.

5.1.9 Please ensure that the overload(s) within the panel are adjusted to match the Full Load Current of the pump(s) to ensure nuisance tripping is not encountered. Please contact our technical office for further advice if required.

PLEASE REFER TO WIRING DIAGRAMS SUPPLIED INSIDE THE CONTROL PANEL.

6 General Maintenance

The best way to achieve this is to arrange a contract with an approved Service provider. Please contact us on the phone number given for service contact details.

There will always be situations when a little self help may be sufficient to avoid call out and we describe here some basic checks which may prove useful: Before opening the unit, please see Health and Safety Notes.

We recommend the unit is checked every 6 months to ensure there are no blockages or obstructions in the inlet and out let pipes, also check that there is not excessive sludge build up in the bottom of the tank.

If in any doubt whatsoever please contact your service provider.

Your unit will require desludging periodically. The frequency of desludging required depends on the units loading and applications; you should inspect and assess the sludge build up every 6 months.

As a part of a service contract you will be advised on your plants expected desludging frequency requirement. It is important that desludging contractors desludge properly as incorrect desludging can lead to poor plant performance.


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7 How to Keep your Pump Station Running Sweetly.

If a Pump Station serves your property, the likelihood is that the property is not connected directly to the mains sewer system.

Sewage pump systems are designed to handle foul water, natural human waste and biodegradable products. Other household waste and non-biodegradable products should never be disposed of through the drainage system.

Disposal of non bio-degradable products will affect the reliability of all pumping stations, causing pumps to block and storage chambers to become congested with non-pumpable waste.

Bear in mind too that it isn't only the toilet that is connected to the station; anything that goes down the sink, bath etc. also ends up there.


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THE FOLLOWING MUST NOT BE DISCHARGED INTO THE DRAINS

• Cleaning Rags • Cloths • Syringes & Hypodermic Needles • Medicines & Medical Equipment. Take unused medicines to a pharmacist for safe disposal. • Grease & Fat. These products tend to cool down, separate from the water and coagulate within the

pump chamber. Fat & grease encase the pump and floats, causing blockages and failure of pumps.

• Nappies, sanitary towels, incontinence materials, soft toys, tennis balls etc. It may seem a bit obvious to say this, but it is amazing what gets flushed down the loo from time to time. Causing blockages of the drains and pumps

• Even so-called disposable nappies and sanitary towels often do not degrade fully and can lead to malfunction, so it is best to dispose of them by other means. Fabric cleansing wipes & nappy liners can block pipework. They should not be flushed into the drainage system.

ROUTINE DE-SLUDGING AND SERVICING

Pump Stations over time accumulate settled solids. It is good practice to check and if necessary empty/desludge these at the same time as any treatment unit.

It is vital to the systems ongoing operation and should be carried out regularly.

Mechanical and electrical servicing, particularly, must be performed by properly trained personnel suitably qualified and experienced in this type of work

8 Warranty Taken from ‘Kingspan’s Terms & Conditions of Sale’

8.1 The company will replace or, at its option, properly repair without charge any goods which are found to be defective and which cause failure in normal circumstances of use within a period of twelve months from the date of delivery.

8.2 This warranty is conditional upon: 8.3 (a) the Buyer notifying the Company of any claim within Seven days of the failure becoming

discernible. (b) the Company being allowed a reasonable opportunity to inspect the goods so as to confirm

that they are defective.

(c) the goods not having been modified, mishandled or misused and being used strictly in accordance with any relevant instructions issued by the Company.

8.4 The Company’s liability under this Clause is limited to the repair or replacement of the defective goods, and does not cover costs of transport, installation or associated site costs, if applicable.

8.5 The Company’s liability to replace or repair the goods is in lieu of and excludes all other warranties and conditions, and in particular (but without limitation) the Company shall have no liability of any kind for consequential loss or damage.

8.6 For any further advice, please contact us. 8.7 A warranty form is included in this package, to register your unit for warranty. Please complete

ALL sections of the form, and return it at your earliest convenience.

APPENDIX J

Guidance to Maintenance Plan

CIRIA RP992 The SuDS Manual Update: Paper RP992/21

Guidance on the Maintenance Plan

1

Guidance on the Maintenance Plan 1. Why is a Maintenance Plan such an important part of a drainage

submission? The purpose of a Maintenance Plan is to ensure all those involved in the maintenance and ongoing operation of the SuDS system understand its functionality and maintenance requirements in terms of supporting long-term performance to the design criteria to which it was designed.

A Maintenance Plan delivered as part of a drainage submission:

Confirms that the designer has taken maintenance into account within the design

Demonstrates the competence of the designer

Provides a guide to the adoption team as to what the maintenance requirements of the system are and how they can be met most efficiently

Provides a basis for costing long term maintenance budgets (and commuted sums, if required)

Provides a working document for use on site

Details procedures for dealing with emergency spillages, vandalism, etc. It should include the local Environment Agency or SEPA Emergency Hotline telephone number which should be called in case of spillages or other pollution incidents.

The Maintenance Plan for the drainage system should be designed in cooperation with the adopting authority and the information therein should be presented and discussed verbally with all those involved in inspecting and maintaining the drainage systems.

2. What should a Maintenance Plan include? The SuDS Maintenance Plan should cover and clarify the following issues:

A description of the site - concentrating on describing how the drainage system works in practice and what it is trying to achieve. This is likely to include flow routes, sub-catchments, SuDS components, flow control features and outfall arrangements. It should also explain the visual and biodiversity aspects of a scheme as these can easily be compromised by inappropriate maintenance.

A plan of the site that identifies runoff sub-catchments, SuDS components, critical water levels, control structures, flow routes (including exceedance routing) and outfalls.

A plan clearly showing the extent of the adopted area along with easements and rights of way for access to carry out maintenance. If other parties are responsible for different parts of a scheme, this should be clearly shown on the plan.

The access that is required to each surface water management component for maintenance purposes and a plan for the safe and sustainable removal and disposal of waste periodically arising from the drainage system.

A review of the work to be undertaken based on regular day to day maintenance, occasional tasks and remedial work. Details of the likely maintenance requirements for each SuDS element are provided in the SuDS Manual. Maintenance requirements for proprietary systems should be provided by the manufacturer or supplier.

The maintenance specification - detailing the materials to be used and the standard of work required. A specification should describe how the work should be carried out and should contain clauses giving general instructions to the maintenance contractor.



2

The maintenance schedule of work - itemizing the tasks to be undertaken and the frequency at which they should be performed so that an acceptable long‑term performance standard is secured. This schedule can then be priced, checked on site and form the basis of an inspection log where appropriate. The schedule should be a living document as it may change, where inspections advise changes to the scheme maintenance requirements.

Contact sheet and any additional guidance notes – e.g. action plan for dealing with accidental spillages.

Photographic records of the inspections. This can pick up long-term changes that might not be apparent on a single visit, especially where inspections are carried out by different members of staff.

Note: An example of a Maintenance Plan is available as a separate document.



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Maintenance Inspection Checklists 3. Objectives This checklist is a generic list that can be added to, or have items removed from, to suit a particular site. The exact content of the checklist will depend on the combination of different SuDS components used in a scheme. Checklists should be selected based on the combination of elements in the drainage system to provide a bespoke inspection report.

The objective of this checklist is to:

Confirm that appropriate routine maintenance of the system is being undertaken

Confirm that the system is continuing to operate effectively

Identify any remedial works required

Provide a consistent record of the condition and performance of the system.

It is not a checklist of maintenance items (see CIRIA C697 for maintenance schedules – page references are provided below). It is a checklist to facilitate consistent inspection of the condition of the system. It can be used by any organisation responsible for the long-term maintenance of the SuDS system as a recording process, or by a sub-contracted organisation as part of their client reporting procedures.

The SuDS Manual – Page references for appropriate maintenance activities and frequencies

Component SuDS Manual Page Ref *

Filter strip

Swale

Infiltration basin

Soakaway

Detention basin

Pond

Wetland

Bioretention

Permeable/porous pavement

Filter drain

Proprietary systems Maintenance and inspection activities and frequency of proprietary systems should follow the advice provided by the manufacturer or supplier and should be included on the checklist for a site. These should be checked during the first year of operation to make sure they are appropriate for the site.

Attenuation tanks

Green roofs

(*) SuDS Manual Page References will be included once the SuDS Manual update has been completed.



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Inspections should comply with all relevant Health and Safety legislation (Health and Safety at Work Regulations, 1999) including the development of risk assessments for working close to or in water.

Inspections should ideally be carried out monthly (and no less than 3 monthly), at the same time as other routine maintenance activities.



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Table 1: SuDS Maintenance Inspection Checklist

GENERAL INFORMATION

Site ID

Site Location and co-ordinates (GIS if appropriate)

Elements forming the SuDS scheme Approved Drawing Reference(s)

Inspection frequency Approved Specification Reference

Type of development Specific purpose of any parts of the scheme (e.g. biodiversity, wildlife and visual aspects)

Inspection date

Inspection date

Details Y/N Action required

Date Completed


Date Completed

GENERAL INSPECTION ITEMS

Is there any evidence of erosion, channelling, ponding (where not desirable) or other poor hydraulic performance?

Is there any evidence of accidental spillages, oils, poor water quality, odours, nuisance insects?

Have any health and safety risks been identified to either the public or maintenance operatives?

Is there any deterioration in the surface of permeable or porous surfaces (e.g. rutting, spreading of blocks or signs of ponding water)?



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Inspection date

Inspection date


Date Completed


Date Completed

SILT/SEDIMENT ACCUMULATION

Is there any sediment accumulation at inlets (or other defined accumulation zones such as the surface of filter drains or infiltration basins and within proprietary devices)?

If yes, state depth (mm) and extent

Is removal required?

If yes, state waste disposal requirements and confirm all waste management requirements have been complied with (consult Environment Agency or SEPA).

Is surface clogging visible (potentially problematic where water has to soak into the underlying construction or ground (e.g. under-drained swale or infiltration basin)?

Does permeable or porous surfacing require sweeping to remove silt?

SYSTEM BLOCKAGES / LITTER BUILD UP

Is there evidence of litter accumulation in the system?

If yes, is this a blockage risk?

Is there any evidence of any other clogging/blockage of outlets or drainage paths?

VEGETATION



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Inspection date

Inspection date


Date Completed


Date Completed

Is the vegetation condition satisfactory (density, weed growth, coverage etc.)? (Check against approved planting regime.)

Does any part of the system require weeding / pruning / mowing? (Check against maintenance frequency stated in approved design.)

Is there any evidence of invasive species becoming established?

If yes, state action required.

INFRASTRUCTURE

Are any check dams or weirs in good condition?

Is there evidence of any accidental damage to the system (e.g. wheel ruts?)

Is there any evidence of cross connections or other unauthorised inflows?

Is there any evidence of tampering with the flow controls?

Are there any other matters that could affect the performance of the system in relation to the design objectives for hydraulic, water quality, biodiversity and visual aspects? (Specify.)

OTHER OBSERVATIONS

Information appended (e.g. photos)



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Inspection date

Inspection date


Date Completed


Date Completed

SUITABILITY OF CURRENT MAINTENANCE REGIME

Continue as current

Increase maintenance

Decrease maintenance

NEXT INSPECTION

Proposed date for next inspection

Suite One | No 3 Mitton Road Business Park | Mitton Road | Whalley | Lancashire | BB7 9YE Office: 01254 377622 Mobile: 07906 753583 [email protected] www.bekenviro.co.uk

mailto:[email protected]

http://www.bekenviro.co.uk/