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["SITE NAME:","Mogden STW",null,null,null,"ODOUR RISK ASSESSMENT"]
["DATE:","2020-10-12"]
[null,null,null,"Normal ",null,"Abnormal"]
["Process Stage","Process Unit ","Applicable Legislation","Odour Description","Constant/ Intermittent/ Occasional/ Rare","Event Description","Likelihood of Event Frequent/ Rare/ Planned","Length of Time of Release","Nearest Customer/ Receptor","Offensive-ness (0-5)","Likelihood of Impact (0-5)","Odour Risk\n(<5 Low, >15 High)","Odour Impact","Monitoring","Frequency ","Recorded ","Responsibility","Mitigation Measures","Residual Odour Impact (L/M/H)","Responsibility for Mitigation Measures","Customer Communication Needed?","Notes"]
["ADD EXTRA ROWS BELOW THIS ROW IF REQUIRED",null,null,null,null,null,null,null,null,null,null,{"$f":"J5*K5","v":0},"-","-","-","-","-","-","-","-","-"]
["Works Inlet","East side inlet - Main pumping station including culvert","UWWTD","Sewage","C",null,null,null,"Weavers Close & DNR footpath  & Oak  Lane",3,0,{"$f":"J6*K6","v":0},"Low","-","-","-","-",null,"-",null,"-","Enclosed building."]
["Works Inlet","East side inlet - Main pumping station including culvert","UWWTD","Sewage",null,"Flooding of the wet well","R","Hours","Weavers Close & DNR footpath & Oak  Lane",3,3,9,"Medium",null,null,null,null,"Over pumping and tankering","L","Event Controller","Y","This has never happened; there is resilience available in the main pumping station and online monitoring all the time."]
["Works Inlet","East side inlet - Main pumping station including culvert","UWWTD","Raw sewage and H2S",null,"OCU Mechanical / Electrical failure","R","Hours","Weavers Close & DNR footpath & Oak  Lane",3,1,3,"Low",null,null,null,null,"Use standby fan and repair the faulty one","L","Technical Coordinator / Plant Manager","Y"]
["Works Inlet","East side inlet - Main pumping station including culvert","UWWTD","Raw sewage and H2S",null,"Planned Preventive Maintenance of OCU","P","Hours","Weavers Close & DNR footpath & Oak  Lane",3,1,3,"Low",null,null,null,null,"Planned ","L","Technical Coordinator / Plant Manager","N"]
["Works Inlet","East side - Cess import facility","EPR & UWWTD","Cess","I",null,null,null,"Weavers Close & DNR footpath  & Oak  Lane",3,1,3,"Low",null,null,null,null,null,null,null,"-"]
["Works Inlet","East side - Cess import facility","EPR & UWWTD","Cess",null,"Localised spillage from tanker","R","Hours","Weavers Close & DNR footpath & Oak  Lane",3,1,3,"Low",null,null,null,null,"Hosing area down  ","L","Tech 1 ","N"]
["Works Inlet","West side inlet - Lucifer's Gate & High level flow split chamber","UWWTD","Sewage","C",null,null,null,"Worton Road & Oak Lane",3,0,{"$f":"J12*K12","v":0},"Low","-","-","-","-",null,null,"-","-"]
["Works Inlet","West side inlet - Lucifer's Gate & High level flow split chamber","UWWTD","Sludge",null,"Flooding of high level flow split chamber","R","Hours","Worton Road & Oak Lane",3,3,{"$f":"J13*K13","v":9},"Medium","-","-","-","-","Over pumping and tankering","L","Event Controller","Y","This has never happened; the controlled penstocks in the area can be manually operated and additional flows can be treated on the east side of the works."]
["Storm Separation","Storm Tanks - Feed Channels","UWWTD","Sewage","I",null,null,null,"Lynton Close, Bankside Close & Hillary Drive",3,1,{"$f":"J14*K14","v":3},"Low","-","-","-","-","-","-","-","-","Local council provided twice daily area check sheets. "]
["Storm Separation","Storm Tanks - Feed Channels","UWWTD","Sewage, sludge, fat",null,"Accumulation of fat & surface sludge","R","Hours","Lynton Close, Bankside Close & Hillary Drive",4,2,{"$f":"J15*K15","v":8},"Medium","-","-","-","-","Flush out with final effluent to prevent odour release from accumulated solids/grit ","L","Process Controller","N","Local council provided twice daily area check sheets. "]
["Storm Separation","Storm Tanks ","UWWTD","None",null,null,null,null,null,null,null,{"$f":"J16*K16","v":0},"Low","-","-","-","-","-","-","-","-"]
["Storm Separation","Uncovered Storm Tanks ","UWWTD","Sewage",null,"Filling/emptying","R","Days","Lynton Close, Bankside Close & Hillary Drive",3,3,{"$f":"J17*K17","v":9},"Medium","-","-","-","-","Daily area checks ensuring plant is operational","L","Process Controller","N","Use of storm tanks is dependent on flows into site."]
["Storm Separation","Uncovered Storm Tanks ","UWWTD","Strong sewage",null,"Unable to return storm content","R","Days","Lynton Close, Bankside Close & Hillary Drive",4,3,{"$f":"J18*K18","v":12},"Medium",null,null,null,null,"Over pumping and tankering","M","TM and Process Controller","Y","A failure would likely occur on a single tank minimising accumulative impact."]
["Storm Separation","Uncovered Storm Tanks ","UWWTD","Raw sludge, sewage",null,"Amajets failure","R","Hours","Lynton Close, Bankside Close & Hillary Drive",4,3,{"$f":"J19*K19","v":12},"Medium",null,null,null,null,"Manual hosing and tankering","M","M&E","Y","Customer Communications required if all Amajets fail."]
["Storm Separation","East Side Storm Overflow ","UWWTD","Sewage ","R",null,null,null,"Weavers Close",3,0,{"$f":"J20*K20","v":0},"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","East Side Screening Handling Plant - Screens","UWWTD","Sewage","C",null,null,null,"Weavers Close, Fleming Way, Oak Lane",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","East Side Screening Handling Plant -Washpactors and conveyors","UWWTD","Sewage","C",null,null,null,"Weavers Close, Fleming Way, Oak Lane",3,0,{"$f":"J22*K22","v":0},"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","East Side Screening Handling Plant - Washpactors and conveyors","UWWTD","Sewage",null,"Spillages","R","Hours","Weavers Close, Fleming Way, Oak Lane",3,2,6,"Medium",null,null,null,null,"Hosing area down and clear rag","L","Tech 1 & TM","N","Water is added to screenings during the process reducing odour."]
["Preliminary Treatment","East Side Screening Handling Plant - Skips","UWWTD","Sewage / Rag","C",null,null,null,"Weavers Close, Fleming Way, Oak Lane",2,0,{"$f":"J24*K24","v":0},"Low",null,null,null,null,null,null,null,"-","Enclosed skips and odour control plant."]
["Preliminary Treatment","East Side Screening Handling Plant - Skips","UWWTD","Sewage / Rag",null,"Changing skips","P","Hours","Weavers Close, Fleming Way, Oak Lane",2,1,{"$f":"J25*K25","v":2},"Low",null,null,null,null,"Clear rag during skip change","L","Tech 1","N","Skip change will be completed within minutes. The rag present would have been dewatered."]
["Preliminary Treatment","West Side Screening Handling Plant - Screens","UWWTD","Sewage","C",null,null,null,"Worton Road, DNR footpath & Oak Lane",3,0,{"$f":"J26*K26","v":0},"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","West Side Screening Handling Plant -Washpactors ","UWWTD","Sewage & Rag",null,"Rejection of skips due to high water content - failure/ degraded performance of washpactor.","R","Hours","Worton Road, DNR footpath & Oak Lane",3,5,15,"High","-","-","-","-","Skips should be covered. ","M","Plant Manager/ Technical Co-ordinator","N","Plans for refurbishment of West Side Inlet Screens."]
["Preliminary Treatment","West Side Screening Handling Plant - Washpactors ","UWWTD","Sewage",null,"Spillages","R","Hours","Worton Road, DNR footpath & Oak Lane",3,2,6,"Low",null,null,null,null,"Hosing area down and clear rag","L","Tech 1 & TM","N","Water is added to screenings during the process reducing odour."]
["Preliminary Treatment","West Side Screening Handling Plant - Skips","UWWTD","Rag","C",null,null,null,"Worton Road, DNR footpath & Oak Lane",2,0,0,"Low",null,null,null,null,null,null,null,"-","Enclosed skips and odour control plant."]
["Preliminary Treatment","West Side Screening Handling Plant - Skips","UWWTD","Rag",null,"Changing skips","P","Hours","Worton Road, DNR footpath & Oak Lane",2,1,2,"Low",null,null,null,null,"Clear rag during skip change","L","Tech 1","N","Skip change will be completed within minutes. The rag present would have been dewatered."]
["Preliminary Treatment","East Side Screenings Handling - Conveyor stone trap","UWWTD","Sewage ","C",null,null,null,"Weavers Close, Fleming Way, Oak Lane",1,0,0,"Low",null,null,null,null,null,null,null,"-","Dry stones from the screen process."]
["Preliminary Treatment","West Side Screenings Handling - Screen launder stone trap","UWWTD","Sewage","C",null,null,null,"Worton Road, DNR footpath & Oak Lane",2,1,{"$f":"J32*K32","v":2},"Low",null,null,null,null,null,null,null,"-"]
["Preliminary Treatment","East Side Grit Removal - Grit Channels","UWWTD","Sewage, grit","C",null,null,null,"Weavers Close & DNR footpath & Oak Lane",3,0,0,"Low",null,null,null,null,null,null,null,"-","Covered and odour controlled."]
["Preliminary Treatment","East Side Grit Removal - Grit Channels","UWWTD","Sewage, grit",null,"Channel out of service","P","Days","Weavers Close & DNR footpath & Oak Lane",3,0,0,"Low",null,null,null,null,"Empty and clean channel","L","TM & Tech 1","N","Covered and odour controlled."]
["Preliminary Treatment","East Side Grit Removal - Dredger ","UWWTD","Sewage, grit",null,"Failure","R","Days","Weavers Close & DNR footpath & Oak Lane",3,0,0,"Low",null,null,null,null,"Use tanker to empty channel content","L","M&E","N"]
["Preliminary Treatment","East Side Grit Removal - Dredger ","UWWTD","Sewage, grit",null,"Maintenance","P","Hours","Weavers Close & DNR footpath & Oak Lane",3,0,0,"Low",null,null,null,null,"East OCU in operation","L","M&E","N"]
["Preliminary Treatment","East Side Grit Removal - Grit Classifiers (including return liquors)","UWWTD","Sewage, grit","C",null,null,null,"Weavers Close & DNR footpath & Oak Lane",3,1,3,"Low",null,null,null,null,null,null,null,"-"]
["Preliminary Treatment","East Side Grit Removal - Grit Classifiers (including return liquors)","UWWTD","Sewage, grit",null,"Failure","R","Weeks","Weavers Close & DNR footpath & Oak Lane",3,1,3,"Low",null,null,null,null,"Use one of the other two available classifiers","L","M&E","N"]
["Preliminary Treatment","East Side Grit Removal - Grit Classifiers (including return liquors)","UWWTD","Sewage, grit",null,"Maintenance","P","Hours","Weavers Close & DNR footpath & Oak Lane",3,1,3,"Low",null,null,null,null,null,null,"M&E","N"]
["Preliminary Treatment","East Side Grit Removal - Grit Skips","UWWTD","Grit","C",null,null,null,"Weavers Close & DNR footpath & Oak Lane",2,0,{"$f":"J40*K40","v":0},"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","East Side Grit Removal - Grit Skips","UWWTD","Grit",null,"Skip change","P","Hours","Weavers Close & DNR footpath & Oak Lane",2,1,2,"Low",null,null,null,null,"Clear and wash down area","L","Tech 1","N"]
["Preliminary Treatment","West Side Grit Removal - Detritors / Crossflow grit trap","UWWTD","Sewage, grit","C",null,null,null,"Worton Road & Oak Lane",2,1,2,"Low",null,null,null,null,"N",null,null,"-"]
["Preliminary Treatment","West Side Grit Removal - Detritors / Crossflow grit trap","UWWTD","Sewage, grit",null,"Failure","R","Weeks","Worton Road & Oak Lane",2,1,2,"Low",null,null,null,null,"Use the other detritor","L","M&E","N","Worst case scenario for timescale."]
["Preliminary Treatment","West Side Grit Removal - Detritors / Crossflow grit trap","UWWTD","Sewage, grit",null,"Maintenance","P","Hours","Worton Road & Oak Lane",2,1,2,"Low",null,null,null,null,"Use the other detritor","L","M&E","N"]
["Preliminary Treatment","West Side Grit Removal - Skips","UWWTD","Grit","C",null,null,null,"Worton Road & Oak Lane",2,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Preliminary Treatment","West Side Grit Removal - Skips","UWWTD","Grit",null,"Skip change","P","Hours","Worton Road & Oak Lane",2,1,2,"Low","-","-","-","-","Clear and wash down area","L","Tech 1","N"]
["Preliminary Treatment","East and West individual skips for housekeeping","UWWTD","Rag, grit","I",null,null,null,"Worton Road, Oak Lane, Weavers Close, DNR footpath & Oak Lane",2,1,2,"Low",null,null,null,null,null,null,null,"-","Skips are covered."]
["Crude Sewage Transfer ","West Side screw pumps","UWWTD","Sewage","C",null,null,null,"Worton Road & Oak Lane",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Crude Sewage Transfer ","West Side screw pumps","UWWTD","Sewage",null,"Failure","R","Weeks","Worton Road & Oak Lane",3,0,0,"Low","-","-","-","-","Use the other pumps","L","M&E","N","Worst case scenario for timescale."]
["Primary Settlement","East Side - Primary Settlement Tanks","UWWTD","Settled sewage","C",null,null,null,"Oak Lane, Weavers Close, Fleming Way, Lynton Close",3,0,{"$f":"J50*K50","v":0},"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Primary Settlement","East Side - Primary Settlement Tanks","UWWTD","Settled sewage",null,"Roof / panel damage through impact or weather","R","Days","Oak Lane, Weavers Close, Fleming Way, Lynton Close",3,2,6,"Medium","-","-","-","-","Draining down and cleaning of affected tank while repairs are undertaken","L","Technical Coordinator","Y","Very unlikely to occur."]
["Primary Settlement","East Side - Primary Settlement Tanks","UWWTD","Settled sewage / Raw sludge",null,"Tank drained down for maintenance","P","Days","Oak Lane, Weavers Close, Fleming Way, Lynton Close",3,0,0,"Low","-","-","-","-","Wash out tank as soon as drained down to remove sludge deposits","L","Tech 1 / TM","N"]
["Primary Settlement","West Side - Circular Primary Settlement Tanks (9 - 12)","UWWTD","Settled sewage","C",null,null,null,"Hall Road, Worton Road, Worton Hall, Oak Lane",3,1,3,"Low","-","-","-","-",null,"-","-","-","Uncovered tanks."]
["Primary Settlement","West Side - Circular Primary Settlement Tanks (9 - 12)","UWWTD","Settled sewage / Raw sludge",null,"Inability to desludge tank(s) due to pump failure","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane",3,2,{"$f":"J54*K54","v":6},"Medium","-","-","-","-","Replace pumps","L","Technical Coordinator","N"]
["Primary Settlement","West Side - Circular Primary Settlement Tanks (9 - 12)","UWWTD","Settled sewage / Raw sludge",null,"Bridge / Scraper failure","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane",3,2,6,"Medium","-","-","-","-","Carry out repair (if the repair will take longer than 48 hours, drain and hose tank down)","L","Technical Coordinator","N","Customer Communication needed only if tank is drained down."]
["Primary Settlement","West Side - Circular Primary Settlement Tanks (9 - 12)","UWWTD","Settled sewage / Raw sludge",null,"Tank drained down via low level drainage valve","P","Hours","Hall Road, Worton Road, Worton Hall, Oak Lane",3,2,6,"Medium","-","-","-","-","Wash out tank as soon as drained down to remove sludge deposits","L","Technical Coordinator / Tech 1","Y"]
["Primary Settlement","West Side - Circular Primary Settlement Tanks (9 - 12)","UWWTD","Settled sewage / Raw sludge",null,"Low level drainage valve failure when draining tank down","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane",3,2,{"$f":"J57*K57","v":6},"Medium","-","-","-","-","Overpumping of tank contents / Drain down and clean tank","L","Technical Coordinator / Tech 1","Y"]
["Primary Settlement","West Side Circular Primary Settlement Tanks (9-12) - Scum Removal System","UWWTD","Fat ","C",null,null,null,"Oak Lane, Weavers Close, Fleming Way, Lynton Close",2,1,2,"Low","-","-","-","-","-","-","-","-"]
["Primary Settlement","West Side Circular Primary Settlement Tanks (9-12) - Scum Removal System","UWWTD","Fat ",null,"Failure of scum removal system","R","Hours","Hall Road, Worton Road, Worton Hall, Oak Lane",2,2,4,"Low","-","-","-","-","Repair and hose down surface if required","L","Technical Coordinator / Tech 1","N"]
["Primary Settlement","West Side - Primary Settlement Tanks (13-25)","UWWTD","Settled sewage","C",null,null,null,"Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Primary Settlement","West Side - Primary Settlement Tanks (13-25)","UWWTD","Settled sewage / Raw sludge",null,"Roof / panel damage through impact or weather","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",3,2,6,"Medium","-","-","-","-","Draining down and cleaning of affected tank while repairs are undertaken","L","Technical Coordinator","Y","Very unlikely to occur."]
["Primary Settlement","West Side - Primary Settlement Tanks (13-25)","UWWTD","Settled sewage / Raw sludge",null,"Tank drained down for maintenance","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",3,0,0,"Low","-","-","-","-","Wash out tank as soon as drained down to remove sludge deposits","L","Tech 1 / TM","N"]
["Primary Settlement","West Side Primary Settlement Tanks (13-25) - Scum Removal System","UWWTD","Fat ","C",null,null,null,"Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",2,1,{"$f":"J63*K63","v":2},"Low","-","-","-","-","-","-","-","-"]
["Primary Settlement","West Side Primary Settlement Tanks (13-25) - Scum Removal System","UWWTD","Fat ",null,"Failure of scum removal system","R","Days","Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",2,2,4,"Low","-","-","-","-","Repair and hose down surface if required","L","Technical Coordinator / Tech 1","N"]
["Settled Sewage Transfer ","East Side - Flow & Distribution to Secondary Treatment","UWWTD","Settled sewage","C",null,null,null,"Oak Lane, Weavers Close, Fleming Way, Lynton Close",3,0,0,"Low","-","-","-","-",null,"-","-","-","Underground channels."]
["Settled Sewage Transfer ","West Side Primary Settlement Tanks (9-12) - Flow & Distribution to Secondary Treatment","UWWTD","Settled sewage","C",null,null,null,"Hall Road, Worton Road, Worton Hall, Oak Lane",3,0,0,"Low",null,null,null,null,null,null,null,"-","Underground channels."]
["Settled Sewage Transfer ","West Side Primary Settlement Tanks (13-25) - Flow & Distribution to Secondary Treatment","UWWTD","Settled sewage","C",null,null,null,"Hall Road, Worton Road, Worton Hall, Oak Lane, Wainwright Grove",3,0,{"$f":"J67*K67","v":0},"Low",null,null,null,null,null,null,null,"-","Covered / Odour controlled."]
["Secondary Treatment","East Side - Activated Sludge Plant Lanes & Zones ","UWWTD","Earthy","C",null,null,null,"Lynton Close, Bankside Close, Hillary Drive",2,1,2,"Low","-","-","-","-",null,"-","-","-"]
["Secondary Treatment","East Side - Activated Sludge Plant Lanes & Zones","UWWTD","Earthy",null,"Lane drained down","P","Days","Lynton Close, Bankside Close, Hillary Drive",2,2,4,"Low","-","-","-","-","Hose down tanks immediately after drain down ","L","Technical Coordinator / Tech 1","N"]
["Secondary Treatment","West Side - Activated Sludge Plant Lanes & Zones ","UWWTD","Earthy","C",null,null,null,"Hall Road, Wainwright Grove, Harvesters Close",2,1,2,"Low","-","-","-","-","-","-","-","-"]
["Secondary Treatment","West Side - Activated Sludge Plant Lanes & Zones ","UWWTD","Earthy",null,"Lane drained down ","P","Days","Hall Road, Wainwright Grove, Harvesters Close",2,2,{"$f":"J71*K71","v":4},"Low","-","-","-","-","Hose down tanks immediately after drain down ","L","Technical Coordinator / Tech 1","N"]
["Secondary Treatment ","East Side - Flow & Distribution to Secondary Settlement (FSTs)","UWWTD","Earthy","C",null,null,null,"Lynton Close, Bankside Close, Hillary Drive",2,1,2,"Low","-","-","-","-","-","-","-","-"]
["Secondary Treatment ","East Side - Flow & Distribution to Secondary Settlement (FSTs)","UWWTD","Earthy","C","Surface scum accumulation","F","Weeks","Lynton Close, Bankside Close, Hillary Drive",2,1,{"$f":"J73*K73","v":2},"Low","-","-","-","-","Hose down surface","L","TM / Tech 1","N"]
["Secondary Treatment ","West  Side - Flow & Distribution to Secondary Settlement (FSTs)","UWWTD","Earthy","C",null,null,null,"Hall Road, Wainwright Grove, Harvesters Close",2,1,2,"Low","-","-","-","-","-","-","-","-"]
["Secondary Treatment ","West  Side - Flow & Distribution to Secondary Settlement (FSTs)","UWWTD",null,null,"Surface scum accumulation","F","Weeks","Hall Road, Wainwright Grove, Harvesters Close",2,1,{"$f":"J75*K75","v":2},"Low","-","-","-","-","Hose down surface","L","TM / Tech 1","-"]
["Secondary Settlement ","East Side - Final Settlement Tanks","UWWTD","Final effluent","C",null,null,null,"Mogden Lane, Beaumont Place, Hillary Drive, Fleming Way, Bankside Close and Weavers Close",0,0,{"$f":"J76*K76","v":0},"Low","-","-","-","-",null,"-","-","-"]
["Secondary Settlement ","East Side - Final Settlement Tanks","UWWTD","Earthy",null,"Drained down and not yet washed out","P","Hours","Mogden Lane, Beaumont Place, Hillary Drive, Fleming Way, Bankside Close and Weavers Close",2,1,2,"Low","-","-","-","-","Hose down tanks immediately after drain down","L","TM / Tech 1","N"]
["Secondary Settlement ","East Side - Final Settlement Tanks","UWWTD","Earthy",null,"Scraper failure leading to build up of sludge on the surface","R","Hours","Mogden Lane, Beaumont Place, Hillary Drive, Fleming Way, Bankside Close and Weavers Close",2,1,2,"Low",null,null,null,null,"Drain down tanks and hose down sludge","L","TM / Tech 1","N"]
["Secondary Settlement ","West Side - Final Settlement Tanks","UWWTD","Final effluent","C",null,null,null,null,0,0,0,"Low","-","-","-","-",null,"-","-","-"]
["Secondary Settlement ","West Side - Final Settlement Tanks","UWWTD","Earthy",null,"Drained down and not yet washed out","P","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Harvesters Close",2,1,2,"Low","-","-","-","-","Hose down tanks immediately after drain down","L","TM / Tech 1","N"]
["Secondary Settlement ","West Side - Final Settlement Tanks","UWWTD","Earthy",null,"Scraper failure leading to build up of sludge on the surface","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Harvesters Close",2,1,{"$f":"J81*K81","v":2},"Low","-","-","-","-","Drain down tanks and hose down sludge","L","TM / Tech 1","N"]
["Secondary Settlement ","RAS Chambers & Pumping","UWWTD","Earthy","C",null,null,null,"Hall Road, Bankside Close, Wainwright Grove",2,1,2,"Low","-","-","-","-",null,"-","-","-"]
["Secondary Settlement ","RAS Chambers & Pumping","UWWTD","Earthy",null,"Crust due to air mixing system failure","R","Hours","Hall Road, Bankside Close, Wainwright Grove",2,1,2,"Low","-","-","-","-","Hose down to brake the crust","L","TM / Tech 1","N"]
["Secondary Settlement ","SAS Chambers & Pumping","UWWTD","Earthy","C",null,null,null,"Hall Road, Bankside Close, Wainwright Grove",2,1,2,"Low","-","-","-","-","-","-","-","-"]
["Secondary Settlement ","SAS Chambers & Pumping","UWWTD","Earthy",null,"Crust due to air mixing system failure","R","Hours","Hall Road, Bankside Close, Wainwright Grove",2,1,2,"Low","-","-","-","-","Hose down to brake the crust","L","TM / Tech 1","N"]
["Final Effluent",null,"UWWTD","None",null,null,null,null,"None",0,0,0,"Low","-","-","-","-","-","-","-","-"]
["Sludge Imports","Sludge Import Reception Tank","EPR","Raw sludge","I",null,null,null,"Whitton Dene, Harlequin Close",4,0,0,"Low","-","-","-","-",null,"-","-",null,"Covered and odour controlled."]
["Sludge Imports","Sludge Import Reception Tank","EPR","Raw sludge ",null,"Spillages","R","Hours","Whitton Dene, Harlequin Close",4,1,4,"Low","-","-","-","-","24 h monitoring of the area / Clean up spillages","L","Plant Manager / Sludge shift","Y","Contact EHO and issue email notification."]
["Sludge Imports","Sludge Import Screening facility","EPR","Raw sludge ","I",null,null,null,"Whitton Dene, Harlequin Close",4,0,0,"Low",null,null,null,null,null,null,null,null,"Covered and odour controlled."]
["Sludge Imports","Sludge Import Screening facility","EPR","Raw sludge",null,"Blockages ","R","Hours","Whitton Dene, Harlequin Close",4,1,4,"Low",null,null,null,null,"24 h monitoring of the area / Unblock screens","L","Plant Manager / Sludge shift","N"]
["Sludge Imports","Sludge Import Screening facility","EPR","Raw sludge ",null,"Maintenance","P","Hours","Whitton Dene, Harlequin Close",4,1,4,"Low","-","-","-","-","Amount of time during which hatch is open is kept to a minimum","L","Technical Coordinator","N"]
["Sludge Imports","Skip Management","EPR","Sludge and rag","I",null,null,null,"Whitton Dene, Harlequin Close",4,1,4,"Low","-","-","-","-","-","-","-","-","Covered but not odour controlled."]
["Sludge Imports","Skip Management","EPR","Sludge and rag",null,"Overfilling","R","Days","Whitton Dene, Harlequin Close",4,1,4,"Low","-","-","-","-","Transfer spilled rag into another skip and cover","L","Team Manager","Y","Contact EHO and issue email notification."]
["Sludge Conditioning (Indigenous)","Raw Sludge Holding Tank","EPR","Raw sludge","C",null,null,null,"Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent",4,0,0,"Low",null,null,null,null,"Odour controlled via OCU",null,null,"-","Covered and odour controlled."]
["Sludge Conditioning (Indigenous)","Raw Sludge Holding Tank","EPR","Raw sludge",null,"Overfilling of tank due to probe failure","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent",4,2,8,"Medium",null,null,null,null,"Wash down sludge to local drainage","L","Team Manager","Y","Contact EHO and issue email notification."]
["Sludge Conditioning (Indigenous)","Raw Sludge Holding Tank","EPR","Raw sludge",null,"Hatch left open","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent",4,1,4,"Low",null,null,null,null,"Close hatch ","L","Plant Manager / Sludge shift","N"]
["Sludge Conditioning (Indigenous)","Primary Raw Sludge Thickening & Pumping - Thickened sludge balancing tank","EPR","Thickened sludge ","C",null,null,null,"Whitton Dene and Harlequin Close",4,0,0,"Low",null,null,null,null,null,null,null,null,"Covered and odour controlled."]
["Sludge Conditioning (Indigenous)","Primary Raw Sludge Thickening & Pumping - Thickened sludge balancing tank","EPR","Thickened sludge ",null,"Spillages","R","Hours","Whitton Dene and Harlequin Close",4,1,4,"Low",null,null,null,null,"Wash down area ","L","Plant Manager / Sludge shift","Y","Contact EHO and issue email notification."]
["Sludge Conditioning (Indigenous)","Primary Raw Sludge Thickening & Pumping - Thickened sludge balancing tank","EPR","Thickened sludge ",null,"Hatch left open","R","Hours","Whitton Dene and Harlequin Close",4,1,4,"Low",null,null,null,null,"Close hatch ","L","Plant Manager / Sludge shift","N"]
["Sludge Conditioning (Indigenous)","SAS pre-Thickening & Pumping - PFT","EPR","Earthy ","C",null,null,null,"Arnold Crescent, Harvesters Close, Glen Walk, Harlequin Close and Whitton Dene",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and odour controlled."]
["Sludge Conditioning (Indigenous)","SAS pre-Thickening & Pumping - PFT","EPR","Earthy",null,"Spillages","R","Hours","Arnold Crescent, Harvesters Close, Glen Walk, Harlequin Close and Whitton Dene",3,1,3,"Low",null,null,null,null,"Wash down area ","L","Team Manager / Day Ops","Y","Contact EHO and issue email notification."]
["Sludge Conditioning (Indigenous)","SAS pre-Thickening & Pumping - PFT","EPR","Earthy",null,"Failure","R","Hours","Arnold Crescent, Harvesters Close, Glen Walk, Harlequin Close and Whitton Dene",3,1,3,"Low","-","-","-","-","Drain and wash down PFT immediately / Do reactive maintenance","L","Team Manager / Day Ops / Technical Coordinator","Y"]
["Sludge Conditioning (Indigenous)","SAS pre-Thickening & Pumping - PFT ","EPR","Earthy ",null,"Maintenance","P","Hours","Arnold Crescent, Harvesters Close, Glen Walk, Harlequin Close and Whitton Dene",3,1,3,"Low","-","-","-","-","PPM","L","-","N"]
["Sludge Conditioning (Indigenous)","Return Liquors","EPR","Sulphurous","C",null,null,null,"Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent",4,0,0,"Low","-","-","-","-","-","-","-","-","Underground pipe."]
["Sludge Conditioning (Indigenous)","Return Liquors","EPR","Sulphurous",null,"PS 16 not in operation","F","Months","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent",4,1,4,"Low","-","-","-","-","None","L","-","N","The returns liquors go back to the PSTs via the site drainage instead of the bypass pipe."]
["Sludge Treatment","Pasteurisation units","EPR","Hot thickened sludge","C",null,null,null,"Whitton Dene and Harlequin Close ",5,0,{"$f":"J106*K106","v":0},"Low","-","-","-","-","-","-","-","-","Covered and vented via an OCU."]
["Sludge Treatment","Pasteurisation units","EPR","Hot thickened sludge",null,"Overfilling pasteurisation stream ","R","Hours","Whitton Dene and Harlequin Close ",5,2,10,"Medium","-","-","-","-","Repair level sensors and hose down local drainage","L","Plant Manager / Technical coordinator / Sludge Shift","Y"]
["Sludge Treatment","Pasteurisation units","EPR","Hot thickened sludge",null,"Planned Preventive Maintenance","P","Hours","Whitton Dene and Harlequin Close ",5,0,{"$f":"J108*K108","v":0},"Low","-","-","-","-","Odour controlled via OCU","-","-","N"]
["Sludge Treatment","Pasteurisation units","EPR","Hot thickened sludge",null,"Drain down of all pasteurisation units","P","Hours","Whitton Dene and Harlequin Close ",5,2,10,"Medium",null,null,null,null,"Flush gullies and monitor area","L","Plant Manager / Technical coordinator / Sludge Shift","Y"]
["Sludge Treatment","Pasteurised sludge storage tanks","EPR","Hot thickened sludge","C",null,null,null,"Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent and Rugby Road",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and vented via OCU."]
["Sludge Treatment","Primary Digestion","EPR","Digested sludge","C",null,null,null,"Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",3,3,9,"Medium","-","-","-","-","Enclosed process. Area wash down and general maintenance/housekeeping.","-","-","-","24h management of the area and of the CHP engines to maintain bell heights to acceptable levels."]
["Sludge Treatment","Primary Digestion","EPR","Biogas, H2S",null,"Release of biogas from digesters seals","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",3,3,9,"Medium","-","-","-","-","Turn extra CHP on to draw down the gas filled / And anti foam digester sealed","M","Plant Manager / Team Manager ","N","24h management of the area and of the CHP engines to maintain bell heights to acceptable levels. Consider EHO notification if gas released is of large quantities."]
["Sludge Treatment","Primary Digestion","EPR","Digested sludge",null,"Spillages","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",3,3,9,"Medium",null,null,null,null,"Turn extra CHP on to draw down the gas filled / And anti foam digester sealed","M","Plant Manager / Team Manager ","N"," Consider EHO notification if spillage is of large quantity."]
["Sludge Treatment","Primary Digestion","EPR","Digested sludge",null,"Whessoe valve failure leading to release of biogas from valves","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",3,3,9,"Medium",null,null,null,null,"Isolate the digester / Turn extra CHP on to draw down the gas filled / And anti foam digester sealed / ","M","Plant Manager / Team Manager / Technical Coordinator","N"," Consider EHO notification if gas realease is of large quantity."]
["Sludge Treatment","Primary Digestion","EPR","Digested sludge",null,"Purging one digester","P","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",3,3,9,"Medium",null,null,null,null,"Divert flow to other digeters","M","Plant Manager","N"]
["Sludge Treatment","Buffer Tank for digested sludge prior to transfer to Iver South SDC","EPR","Digested sludge","C",null,null,null,"Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",3,0,0,"Low","-","-","-","-",null,"-","-","-","Covered and vented via OCU."]
["Sludge Treatment","Buffer Tank for digested sludge prior to transfer to Iver South SDC","EPR","Digested sludge",null,"Overfilling leading to spillages","R","Hours","Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",3,1,{"$f":"J117*K117","v":3},"Low","-","-","-","-","Clean up area / Find cause and resolve","L","Plant Manager / Technical Coordinator","N"," Consider EHO notification if spillage is of large quantity."]
["Sludge Treatment","Emergency Holding Tanks","EPR","None","C",null,null,null,"Harvesters Close, Glenn Walk and Wainwright Grove",0,0,{"$f":"J118*K118","v":0},"Low","-","-","-","-",null,"-","-","-"]
["Sludge Treatment","Emergency Holding Tanks","EPR","Digested sludge",null,"Iver South SDC pumping failure","R","Days","Harvesters Close, Glenn Walk and Wainwright Grove",3,5,{"$f":"J119*K119","v":15},"High","-","-","-","-","Use emergency holding tank and repair main ","H","Process Manager","Y","EHO to be contacted."]
["Sludge Dewatering","Primary Raw Sludge Thickening & Pumping - Drum thickeners","EPR","Raw sludge","C",null,null,null,"Whitton Dene and Harlequin Close",4,0,{"$f":"J120*K120","v":0},"Low",null,"-","-","-",null,"-","-","-","In odour controlled building and drum thickeners are odour controlled."]
["Sludge Dewatering","Liquor Return","EPR","Centrate","C",null,null,null,"Localised on site",4,0,0,"Low","-","-","-","-","-","-","-","-","Underground pipe."]
["Sludge Movements","Iver South Main","EPR","Digested sludge","I",null,null,null,"Hall Road",3,0,{"$f":"J122*K122","v":0},"Low","-","-","-","-","-","-","-","-","Underground pipe."]
["Sludge Movements","Iver South Main","EPR","Digested sludge",null,"Pipe burst","R","Days","Hall Road",3,2,6,"Medium",null,null,null,null,"Stop pumping sludge to Iver South SDC and clean up area","L","Process Manager ","Y"]
["Biogas Systems","Biogas Compressors","EPR","Biogas","C",null,null,null,"Harlequin Close, Whitton Dene, Mogden Lane and Rugby Road",5,0,0,"Low","-","-","-","-",null,"-","-","-","Enclosed in kiosks."]
["Biogas Systems","Biogas Compressors","EPR","Biogas",null,"Biogas leak","R","Hours","Harlequin Close, Whitton Dene, Mogden Lane and Rugby Road",5,2,10,"Medium","-","-","-","-","Shut down affected compressor and run standby until leak fixed","L","Plant Manager / Technical Coordinator","N"]
["Biogas Systems","CHP","EPR","None",null,null,null,null,"Localised on site",null,null,0,"Low","-","-","-","-","-","-","-","-","Enclosed in power house."]
["Biogas Systems","Flare stack","EPR","None","R",null,null,null,"Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",0,0,0,"Low"]
["Biogas Systems","Flare stack","EPR","Biogas",null,"Failure to ignite","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",5,5,25,"High",null,null,null,null,"Hire flare or repair ","L","Plant Manager / Technical Coordinator","Y","Contact EA and issue email notification."]
["Biogas Systems","Boilers","EPR","None","C",null,null,null,"Localised on site",0,0,0,"Low","-","-","-","-","-","-","-","-","Enclosed in the boiler house."]
["Power Generation","Standby Generators","EPR","None","O",null,null,null,"None",0,0,{"$f":"J130*K130","v":0},"Low",null,null,null,null,null,null,null,null,"Planned Preventive Maintenance carried out monthly."]
["Power Generation","Power Management System (PRISMIC) ","EPR","None","C",null,null,null,"None",0,0,{"$f":"J131*K131","v":0},"Low"]
["Power Generation","Power Management System (PRISMIC) use of Standby Generators","EPR","Various",null,"Failure","R","Days","All",3,3,{"$f":"J132*K132","v":9},"Medium",null,null,null,null,"Hire in temporary generators","L","Process Manager","Y","Worst case scenario. Length of time of release would depend on the reason why electricity has been lost to the site."]
["Odour Control Packages","Main pumping station OCU (Biofilter) ","UWWTD","None","C",null,null,null,"Oak Lane, Weavers Close, Fleming Way, Worton Road",1,1,1,"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","Main pumping station OCU (Biofilter) ","UWWTD","H2S",null,"Electrical / Mechanical failure","R","Hours","Oak Lane, Weavers Close, Fleming Way, Worton Road",3,1,3,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","Proess Controller","Y","Air vented out of the pumping station wet well.  If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","Main pumping station OCU (Biofilter) ","UWWTD","H2S",null,"Deterioration of media","R","Months","Oak Lane, Weavers Close, Fleming Way, Worton Road",4,3,{"$f":"J135*K135","v":12},"Medium","-","-","-","-","Replace media","L","Process Manager","N","The media would be replaced before Odour Managemetn Plan trigger level bridges. "]
["Odour Control Packages","Main pumping station OCU (Biofilter) ","UWWTD","None",null,"Planned Preventive Maintenance","P","Hours","Oak Lane, Weavers Close, Fleming Way, Worton Road",0,0,0,"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","Air vented from pumping station wet well. If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","OCU 12 (Chemical scrubber) - Sludge treatment","EPR","None","C",null,null,null,"Whitton Dene and Harlequin Close ",1,1,1,"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","OCU  12 (Chemical scrubber) - Sludge treatment","EPR","H2S",null,"Electrical / Mechanical failure","R","Hours","Whitton Dene and Harlequin Close ",3,2,{"$f":"J138*K138","v":6},"Medium","-","-","-","-","Use standby fan and repair the faulty one","L","Sludge Shift","N","Air would still vent out of the Odour Control Unit.  If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","OCU  12 (Chemical scrubber) - Sludge treatment","EPR","H2S",null,"Chemical dosing pump failure","R","Hours","Whitton Dene and Harlequin Close ",3,2,{"$f":"J139*K139","v":6},"Medium","-","-","-","-","Switch over to the standby Odour Control stream","L","Sludge Shift","N","Air will still be treated  by carbon media even if all dosing pump fails."]
["Odour Control Packages","OCU  12 (Chemical scrubber) - Sludge treatment","EPR","H2S",null,"Deterioration of media","R","Months","Whitton Dene and Harlequin Close ",4,3,12,"Medium",null,null,null,null,"Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","OCU  12 (Chemical scrubber) - Sludge treatment","EPR","None",null,"Planned Preventive Maintenance","P","Hours","Whitton Dene and Harlequin Close ",1,1,{"$f":"J141*K141","v":1},"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","East Side OCU (Chemical scrubber)","UWWTD","None","C",null,null,null,"Weavers Close, Fleming Way and Worton Road",1,1,{"$f":"J142*K142","v":1},"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","East Side OCU (Chemical scrubber)","UWWTD","H2S",null,"Electrical / Mechanical failure","R","Hours","Weavers Close, Fleming Way and Worton Road",2,1,2,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","TM / Tech 1","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","East Side OCU (Chemical scrubber)","UWWTD","H2S",null,"Chemical dosing pump failure","R","Hours","Weavers Close, Fleming Way and Worton Road",2,1,2,"Low","-","-","-","-","Switch over to the standby Odour Control stream","L","TM / Tech 1","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","East Side OCU (Chemical scrubber)","UWWTD","H2S",null,"Deterioration of media","R","Months","Weavers Close, Fleming Way and Worton Road",4,3,{"$f":"J145*K145","v":12},"Medium","-","-","-","-","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","East Side OCU (Chemical scrubber)","UWWTD","None",null,"Planned Preventive Maintenance","P","Hours","Weavers Close, Fleming Way and Worton Road",1,1,1,"Low",null,null,null,null,"Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","Transfer Pumping Station OCU (Biofilter)","EPR","None","C",null,null,null,"Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",1,1,{"$f":"J147*K147","v":1},"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","Transfer Pumping Station OCU (Biofilter)","EPR","H2S",null,"Electrical / Mechanical failure","R","Hours","Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",1,1,1,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","Plant Manager / Sludge shift","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","Transfer Pumping Station OCU (Biofilter)","EPR","H2S",null,"Deterioration of media","R","Months","Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",4,3,12,"Medium","-","-","-","-","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","Transfer Pumping Station OCU (Biofilter)","EPR","None",null,"Planned Preventive Maintenance","P","Hours","Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",1,1,{"$f":"J150*K150","v":1},"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","West Side OCU PS7 ","UWWTD","None","C",null,null,null,"Worton Road",1,1,1,"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","West Side OCU PS7 ","UWWTD","H2S",null,"Electrical / Mechanical failure","R","Hours","Worton Road",1,1,1,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","TM / Tech 1","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","West Side OCU PS7","UWWTD","H2S",null,"Deterioration of media","R","Months","Worton Road",4,3,12,"Medium","-","-","-","-","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","West Side OCU PS7 ","UWWTD","H2S",null,"Planned Preventive Maintenance","P","Hours","Worton Road",1,1,{"$f":"J154*K154","v":1},"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","UWWTD","None","C",null,null,null,"Worton Road and Hall Road",1,1,{"$f":"J155*K155","v":1},"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","UWWTD","H2S",null,"Electrical / Mechanical failure","R","Hours","Worton Road and Hall Road",2,1,2,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","TM / Tech 1","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","UWWTD","H2S",null,"Chemical dosing pump failure","R","Hours","Worton Road and Hall Road",2,1,2,"Low","-","-","-","-","Switch over to the standby Odour Control stream","L","TM / Tech 1","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","UWWTD","H2S",null,"Deterioration of media","R","Months","Worton Road and Hall Road",4,3,12,"Medium",null,null,null,null,"Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","UWWTD","H2S",null,"Planned Preventive Maintenance","P","Hours","Worton Road and Hall Road",1,1,{"$f":"J159*K159","v":1},"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","Thickening OCU (Biofilter)","EPR","None","C",null,null,null,"Whitton Dene and Mogden Lane",1,1,1,"Low","-","-","-","-",null,"-","-","-"]
["Odour Control Packages","Thickening OCU (Biofilter)","EPR","H2S",null,"Electrical / Mechanical failure","R","Hours","Whitton Dene and Mogden Lane",3,1,3,"Low","-","-","-","-","Use standby fan and repair the faulty one","L","Plant Manager / Sludge shift","N"," If a full shut down is required email notification will be sent to customers."]
["Odour Control Packages","Thickening OCU (Biofilter)","EPR","H2S",null,"Deterioration of media","R","Months","Whitton Dene and Mogden Lane",4,3,12,"Medium","-","-","-","-","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","Thickening OCU (Biofilter)","EPR","None",null,"Planned Preventive Maintenance","P","Hours","Whitton Dene and Mogden Lane",1,1,{"$f":"J163*K163","v":1},"Low","-","-","-","-","Use standby stream","L","Technical Coordinator / Plant Manager","N","If a full shut down is required email notification will be sent to customers."]

{"sheet":"Critical Odour Issues","index":1,"n_rows":19,"n_cols":17,"rows_kept":19,"cut":false,"hidden":false,"merged":[]}
[{"$f":"'Risk Assessment'!A1","v":"SITE NAME:"},{"$f":"'Risk Assessment'!B1","v":"Mogden STW"},null,"CRITICAL ODOUR ISSUES"]
["DATE: 12/10/2020"]
[null,null,"Normal ",null,"Abnormal"]
["Process Stage","Process Unit ","Odour Description","Constant/ Intermittent/ Occasional/ Rare","Event Description","Likelihood of Event Frequent/ Rare/ Planned","Length of Time of Release","Nearest Customer/ Receptor","Offensive-ness (0-5)","Likelihood of Impact (0-5)","Odour Risk\n(<5 Low, >15 High)","Odour Impact","Mitigation Measures","Residual Odour Impact (L/M/H)","Responsibility for Mitigation Measures","Customer Communication Needed?","Notes"]
["Storm Separation","Uncovered Storm Tanks ","Strong sewage",null,"Unable to return storm content","R","Days","Lynton Close, Bankside Close & Hillary Drive",4,3,12,"Medium","Over pumping and tankering","M","TM and Process Controller","Y","A failure would likely occur on a single tank minimising accumulative impact."]
["Storm Separation","Uncovered Storm Tanks ","Raw sludge, sewage",null,"Amajets failure","R","Hours","Lynton Close, Bankside Close & Hillary Drive",4,3,12,"Medium","Manual hosing and tankering","M","M&E","Y","Customer Communications required if all Amajets fail."]
["Sludge Treatment","Pasteurisation units","Hot thickened sludge",null,"Overfilling pasteurisation stream ","R","Hours","Whitton Dene and Harlequin Close ",5,2,10,"Medium","Repair level sensors and hose down local drainage","L","Plant Manager / Technical coordinator / Sludge Shift","Y"]
["Sludge Treatment","Pasteurisation units","Hot thickened sludge",null,"Drain down of all pasteurisation units","P","Hours","Whitton Dene and Harlequin Close ",5,2,10,"Medium","Flush gullies and monitor area","L","Plant Manager / Technical coordinator / Sludge Shift","Y"]
["Sludge Treatment","Emergency Holding Tanks","Digested sludge",null,"Iver South SDC pumping failure","R","Days","Harvesters Close, Glenn Walk and Wainwright Grove",3,5,15,"High","Use emergency holding tank and repair main ","H","Process Manager","Y","EHO to be contacted."]
["Biogas Systems","Biogas Compressors","Biogas",null,"Biogas leak","R","Hours","Harlequin Close, Whitton Dene, Mogden Lane and Rugby Road",5,2,10,"Medium","Shut down affected compressor and run standby until leak fixed","L","Plant Manager / Technical Coordinator","N"]
["Biogas Systems","Flare stack","Biogas",null,"Failure to ignite","R","Hours","Whitton Dene, Harlequin Close, Glen Walk, Arnold Crescent, Mogden Lane and Rugby Road",5,5,25,"High","Hire flare or repair ","L","Plant Manager / Technical Coordinator","Y","Contact EA and issue email notification."]
["Odour Control Packages","Main pumping station OCU (Biofilter) ","H2S",null,"Deterioration of media","R","Months","Oak Lane, Weavers Close, Fleming Way, Worton Road",4,3,{"$f":"I12*J12","v":12},"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Managemetn Plan trigger level bridges. "]
["Odour Control Packages","OCU  12 (Chemical scrubber) - Sludge treatment","H2S",null,"Deterioration of media","R","Months","Whitton Dene and Harlequin Close ",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","East Side OCU (Chemical scrubber)","H2S",null,"Deterioration of media","R","Months","Weavers Close, Fleming Way and Worton Road",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","Transfer Pumping Station OCU (Biofilter)","H2S",null,"Deterioration of media","R","Months","Harvesters Close, Glen Walk, Arnold Crescent, Whitton Dene and Harlequin Close ",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","West Side OCU PS7","H2S",null,"Deterioration of media","R","Months","Worton Road",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","OCU 11 (Wet chemical scrubber)","H2S",null,"Deterioration of media","R","Months","Worton Road and Hall Road",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Odour Control Packages","Thickening OCU (Biofilter)","H2S",null,"Deterioration of media","R","Months","Whitton Dene and Mogden Lane",4,3,12,"Medium","Replace media","L","Process Manager","N","The media would be replaced before Odour Management Plan trigger level bridges."]
["Preliminary Treatment","West Side Screening Handling Plant -Washpactors ","Sewage & Rag",null,"Rejection of skips due to high water content - failure/ degraded performance of washpactor.","R","Hours","Worton Road, DNR footpath & Oak Lane",3,5,15,"High","Skips should be covered. ","M","Plant Manager/ Technical Co-ordinator","N","Plans for refurbishment of West Side Inlet Screens."]

{"sheet":"Guidance for Users","index":2,"n_rows":62,"n_cols":3,"rows_kept":62,"cut":false,"hidden":false,"merged":[]}
["GUIDANCE FOR USERS"]
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["1.","To use the spreadsheet, you first of all need to click 'Enable Content' so that the macros will work (see below)."]
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["2.","Then click the 'Display Critical Odour Issues' button."]
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["3.","Then go to 'Critical Odour Issues' sheet to see the list of odour critical plant and issues etc."]
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["4.","When saving the document, make sure you save it as 'Excel Macro-Enabled Workbook (*.xlsm)' (see below)"]
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[null,"Important Notes on Odour Risk Assessment"]
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[null,"Odour Risk Assessment is not a ‘one-off’ exercise but an on-going process, due to changes, both operational and capital, in the treatment plant. The Odour Risk Assessment should be "]
[null,"reviewed whenever the site undergoes an operational or capital change which could affect odour."]
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[null,"It is constructed in the following manner:"]
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[null,"l","Each part of the treatment process is considered under different operating modes – e.g. normal, failure, abnormal: system overload, summer conditions, maintenance etc. "]
[null,null,"The nearest customers to the particular odour source are identified."]
[null,null,"The likely frequency and duration of occurrence for each eventuality is identified."]
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[null,"l","A score is assigned to the severity (0 – 5) of odour under each operating mode. "]
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[null,"l","A score is assigned to the probability (0 – 5) of causing an odour nuisance for each operating mode."]
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[null,"l","Multiplying the severity of odour and probability of causing an odour nuisance generates a ‘Current Odour Emission Risk’ score. Between 0 (zero risk) and 25 (maximum risk), this is used to decide where mitigation should be applied in the short term, and determine where in the longer term enhanced improvement measures are required. Where improvements are identified as necessary (i.e., where suitable mitigation measures are not already in place), entries are made onto the Odour Improvement Plan."]
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[null,"l","The need for operational mitigation, enhanced measures and customer communication is stated and brief details given."]