Distribution Operation Maintenance Strategy Scottish Waters DOMS IAF Impact Risk Assessment Form Completion Guide

Transcription

1 Legal tice: This document and the intellectual property rights in it belong to Scottish Water and except where you are specifically licensed to use this document, you have no right to re-use it. Disclosure of this document under freedom of information does not change the position on (i) ownership and (ii) re-use. DOMS Impact Assessment Form. A DOMS Impact Assessment Form (DOMS IAF) is the control method for Scottish Water to authorise access to all parties onto its water distribution network. The DOMS IAF must be completed for all planned and unplanned intervention on the water distribution network. Scottish Water s DOMS Impact Assessment Forms must be completed for any valve operations or hydrant operations where there is an impact or risk to the following: Water quality The continuity of supply or actual Interruption to Supply To maintain water supply hygiene A DOMS IAF must be completed for the following scenarios where there is the potential for or actually any valve operations or hydrant operations etc are required for any planned or un-planned emergency work on the water distribution network: 1. All mains repairs or any mains intervention on the water distribution network that requires or has the potential for valves to be operated. This includes any mains repaired under pressure which still need valve(s) to be operated or hydrant / scours / washouts opened to reduce the pressure to fit a repair collar. 2. Service reservoirs that require compartments or tanks to be isolated for whatever reason. 3. Isolation of treated water storage points that require compartments or tanks to be isolated for whatever reason. 4. Mains and hydrant flushing as part of a planned / regular flushing program or as an emergency flushing program as part of an incident. te Any Mains Flushing as part of any MST does NOT require an IAF but should be updated onto the Operation Log Pre and Post Flushing. 5. De-commissioning or re commissioning of mains 6. Tankering or bowsers being filled as part of an incident. 7. n Intrusive Pipe sampling or New Connection above 32mm to the live distribution mains. (Under Pressure branch or Bores) 8. Under Pressure bores / connection either 25mm or 32mm will only require a DOMS IAF if the work is to be undertaken on any main deemed a Complex shut or at SW discretion. All under pressure 25mm or 32mm connection will be completed as per the generic and/or any site specific Risk assessment or method statement. 9. All trial excavations must be checked, agreed and validated in advance with Water Operations staff. Any trial excavation on or near (SW discretion) any water main deemed to be a Complex shut. Requires a valid / completed DOMS Impact Assessment Form. A DOMS IAF is required to be completed for all burst repairs including any communication pipes and service repairs. The only exception is where the individual supply can be isolated without carrying out any valve / hydrant operations on the distribution network. Page 1 of 14

2 If there is any doubt regarding the isolations of any Communication pipes or the Service pipe s supply a DOMS IAF must be completed with the appropriate information supplied for the isolation of the main with the valves cleaned and marked. The following is a step by step guide for the completion of a DOMS IAF for both Complex and n Complex using paper copies. The DOMS IAF is available electronically with built in drop down and pop up box for guidance on the correct population and completion Section 1. Details SCOTTISH WATER DOMS IMPACT ASSESSMENT FORM MCL 2628 ( COMPLEX ) Form Initially Raised & Completed By Date and Time Company Name or Business Function to carry out work William Langan SW Water Job / WO / Ops (NSO) SR SR :20am Description of work to be SW Water Ops NSO Unknown Valve Operator Water Ops NSO to update Function / Company & complete CID Project ID Project Name Planned start date N/A Unknown / Risk Technician to confirm undertaken. Including Material Type and Diameter. Diameter Burst main causing Poor Pressure Burst 90mm MDPE Main 90mm Material Type MDPE Valve Operator Name Valve Operator Contact Number Valve Operator EU Skills Number Unknown Water Ops NSO to update & complete Unknown Water Ops NSO to update & complete Unknown Water Ops NSO to update & complete WOA WSZ DMA BALMORE Woodhill Tower Woodhill Tower South DMA Location of the Work to be undertaken & any Known affected areas (Include all relevant post codes) Burst Main On footpath Opposite Number 54 O'Neill Avenue Bishopbriggs Glasgow Causing some Possible poor pressure & Possible discolouration from BV Operation. Form initially raised & completed by Name date and time of person requesting or raising work for access to water network. The person raising the IAF should / Must check that all the valves required to carry out the work are locatable and have been cleaned out are accessible and marked up. Within SW this will generally be the Field Response NSO when raising a mains repair work order (n Complex) Emergency Complex Burst mains the Field Response NSO will complete a DOMS IAF to the best of their Knowledge for issue to Water Operation NSO. Company name or Business function Confirmation on who will be carrying out the work i.e. SW Customer Ops / Leakage Delivery /Water Response / SW Solutions / Clancy Dowcra / SLO s / RPS etc For Customer Ops NSO`s when raising the work this will normally be left blank as OMC are the planners of the work and they will know who will be issued the work request. This can be populated and updated by either SW staff after the OMC assigns the work pack to either a Water Ops NSO / Water Response or by the framework contractor. For all other work types this should be already populated by the person requiring access to the network. I.e. Mains rehab work contractor. Valve Operator Name & Valve Operator contact number These details should / will be added updated prior to the valves being operated on site. For Customer Ops especially any emergency Burst repairs out of hours on stand by this will generally be the person, NSO raising the work. CSD staff the valve operate name shall be updated if different by the person carrying out the valve Ops on site Page 2 of 14

3 EUSR Skills number This shall be populated at the same time as the valve operators name for customer Ops work once known. For all contractors requesting work on the network they will know in advance who will be doing the valve ops on their behalf i.e. mains Re-Hab Customer Care operative etc. For all contractors this section must be checked by Scottish Water staff giving their authorisation for any contractor being allowed to operate valves etc on the network. Their DOMS & National Water Hygiene cards must be checked by Customer Ops that they are correctly trained and have a valid cards and training. Service Request Number SW NSO populates when raising a work request / IAF Job work order Number This is added if already known or updated when issued by OMC CID Auto code & Project Name This is section is completed by contractor Planned start date and time The DOMS IAF should be completed with the view of the work being completed within a 7 day window of the DOMS IAF being Authorised and signed off being by Customer Ops staff. I.e. Monday 13 th Oct 08 then the DOMS IAF is valid for 1 week / 7 days If the work does not go ahead by the 20th Oct 08 then a new DOMS IAF is required either re written or counter signed after all details have been re-checked by CSD. WOA name The Water Operational Area name WSZ name The Water supply Zone name DMA name The district metered area name This information shall be checked and populated by SW as part of the authorisation process. Description of work to be undertaken I.e. 4 Burst Main Repair / Flushing Program / DMA valve zoning / Burst comm. pipe / Mains Re-Hab with description Pipe Bursting / Slip lining /Main laying / New main installation etc Diameter Confirm the pipe diameter either Imperial or Metric Material Type Confirm Material type i.e. Cast Iron MDPE / HPPE / Asbestos Cement, Ductile Iron, Steel Main. Location of the work This should include the site location of the actual excavation and any other affected areas or street names if known. Planned Complex Operations Network Control forums have been set up to review all Planned COMPLEX shuts. All Planned Complex shuts or network activity must be submitted to the local Network control meeting for review and authorisation These forums allow more visibility of work being carried out and ensure rigorous contingency plans are in place. We also review works to allow us to learn from our successes and failures and share best practice. Through these forums we will reduce the risk to water quality and interruptions to supply and also improve customer satisfaction. Therefore, if you want to access our network then it is vital that you get involved in your area s forum. To find out more contact your local meeting s chair: Ayr Mark Templeton AyrNetworkControl@scottishwater.co.uk Clyde Jake Ratter ClydeNetworkControl@scottishwater.co.uk Don Steven Law - DonNetworkControl@scottishwater.co.uk Forth John Williamson ForthNetworkControl@scottishwater.co.uk Ness Mike Rae NessNetworkControl@scottishwater.co.uk Nith Stewart Hamilton NithNetworkControl@scottishwater.co.uk Tay John Coventry - TayNetworkControl@scottishwater.co.uk Tweed Scott Young TweedNetworkControl@scottishwater.co.uk Page 3 of 14

4 Section 2 Network Activity NETWORK ACTIVITY DETAILS FOR MAINS DEEMED COMPLEX ANY WORK DEEMED A COMPLEX SHUT MUST BE SIGNED OFF AT THE REGIONAL NETWORK CONTROL MEETING OR BY EITHER THE WATER OPERATIONS AND OR LEAKAGE DELIVER TEAM LEADERS / MANAGERS PRIOR TO ANY VALVE OPERATIONS. Confirmation of Main type Distribution / Strategic / Critical / Trunk Main / Raw Water Distribution Work to be Completed Under Pressure Please Confirm YES / NO/ UNKNOWN GIS Drawing Attached Complex Shut Required Please Confirm YES / NO Actual Number of Properties Affected 17 Potential Number of Properties Affected Boundary Valve Authorisation Level Please delete as applicable WSZ BV Movement Authorised By NAME & DESIGNATION J Martin Water Ops Team Leader Main Type Confirmation of the Main type i.e. Trunk Main, Distribution Main, Raw etc. Under Pressure Confirmation if work is to be completed under pressure. (New bore etc) GIS Drawing Confirmation if a GIS Drawing is attached with IAF. Complex Shut Required Confirmation if Complex or n Complex. Actual Number of Properties Confirmation of actual numbers affected directly within Shut off. Potential Properties Confirmation of the total potential numbers of properties affected by the work on the network, Including those affected by any back feeding operations or tankering operations for maintaining supplies etc BV Level Type of BV to be operated i.e. WOA / WSZ / DMA / PCC etc BV Authorisation BV operation authorised by name and designation Section 2 Network Activity (continued) Supervision Required Please add either YES / NO And level of Supervision Required on site t Applicable Method Statement Required Please confirm either YES / NO Contingency Plan Required Please enter yes or no (if unsure please enter yes) Method Statement Completed by t Applicable Contingency Plan Completed By t Applicable t Required Supervision Confirmation if site supervision required due to risk to the network or to SW reputation. Supervision Confirmation on the level of site supervision required. i.e. NSO / Team Leader etc Method Statement Confirmation if an additional Method Statement required. Contingency Plan Confirmation if an additional contingency Plan is required. Section 2 Network Activity (continued) Maintaining Supplies Alternative Supplies Options Checked Confirm either YES / NO Maintaining Supplies Alternative Supplies Options Available YES / NO WSZ Boundary Valve requires to be opened. Please Pick or Circle Relevant Alterative Supply / Supplies Back Feeding Maintaining Supplies Details of any Alternative Supply / Supplies to be used & Implemented I.E. Hydrant locations / Overland Length & Size etc Boundary Valve to be opened to maintain supplies and back feed bottom section of O'Neill Ave ( 45 properties ) Additional Overland Supply Alternative available to supply 10 properties with 100m of 2"lay flat overland from hydrant outside no 5 O'Neill A Maintaining Supplies Confirmation that Maintaining Supplies option has been checked for the site location and work required. Maintaining Supplies Confirmation of the Maintaining Supplies option available Maintaining Supplies Confirmation of the Maintaining Supplies option selected and the site specific instructions for implementing. Page 4 of 14

5 Section 2 Network Activity (continued) All Valves checked & cleaned out in advance of work Please Confirm / Any Valves not enabled, checked or cleaned out, Information & Comments, action required for Valve Operations. Sign off required Only 3 valves checked and cleaned out and marked out with blue paint prior to shut of planned. Valve at Beech Road at O'Neill Avenue to be excavated prior to shut off. Spindle rounded unable to operate valve. Back feed Required Please Confirm / Back feed installed & checked prior to shut off Please delete either yes / no BV Valve only checked it is there as per GIS. BV foam and tag still in place. Additional Details for Back Feed if required? Water Supply Zone valve requires to be opened on the day of the mains repair prior to mains shut down. WSZ Valve required to back feed 48 properties in the bottom section of O'Neill Avenue. Total s of Assets to be Operated 7 s of Control Valves to be operated 3 s of Boundary Valves to be operated 1 s of Hydrants to be operated 3 s of Washouts to be operated 0 All Valves Checked Confirmation that all valves have been enabled and are operable. Any Valves t Enabled / Checked Confirmation and instruction for any valves that have not been enabled or checked and or any follow on action required. The person raising the IAF should / Must check that the valves required to carry out the work are locatable and have been cleaned out are accessible and marked up. If 4 valves are required to be operated they are all should cleaned out checked and accessible. If there are reasons why any of the above criteria is not met this MUST be recorded in the additional details box detailing why and what is required for the work to go ahead. I.e. Valve missing then this should lead to further valve investigation further back on the network and will / may increase the amount of valve operations required. I.e. Valve not cleaned out / issue with location of valve middle of busy junction or two man operations required for site safety etc. I.e. Socket spindle worn / rounded requires to be excavate prior to shut off Back Feed Required Confirmation if a Back feed is actually required Back Feed Installed Confirmation Back feed installed prior to any shut off required Back Feed Instruction Confirmation with site specific back feed instruction required Total number of assets to be operated Confirmation of the total number of assets to be operated for work required including Valves, Hydrants, Scours, and Air valves etc Number of control valves to be operated. Confirmation of the total number of control valves to be operated for work required. Number of Boundary Valves to be operated for work required. Confirmation of the total number of Boundary valves to be operated Number of hydrants to be operated either for drain down of main or flushing Confirmation of the total number of hydrants to be operated Number of scours / washouts to be operated either for drain down of main or flushing. Confirmation on the total number of Scour valves or Wash outs to be operated. Page 5 of 14

6 Section 3 Network Activity Isolation NETWORK ACTIVITY ISOLATION DETAILS ( NOTE : VALVES SHOULD BE LISTED IN ORDER OF SEQUENCE FOR THEIR OPERATION ) REMEMBER C.A.L.M When working on the WATER NETWORK CHECK / ACTUATE / LISTEN / MONITOR NETWORK ACTIVITY ISOLATION DETAILS ( NOTE : VALVES SHOULD BE LISTED IN ORDER OF SEQUENCE FOR THEIR OPERATION ) Asset ID Asset Description Asset Location Current Valve Status Open / Closed Valve Closure Direction Anti Clockwise / Clockwise rmal Valve Status Valve to be returned to Open / Closed mm Sluice valve On Footpath Opposite 51 O'Neill Avenue Open Anti Clockwise Open mm Sluice valve On Footpath Opposite 51 O'Neill Avenue Open Anti Clockwise Open mm Sluice valve Junction Beech O'Neill Avenue Open Anti Clockwise Open Asset ID This section shall be populated by CSD staff authorising the DOMS IAF from GIS Asset description Type of valve and diameter to be operated / checked etc Asset Location The physical location of the asset. Current Valve status The current valve status onsite. i.e. Has the valve been operated and left shut to minimise damage to the road / footpath etc. Valve Closing Direction Direction of valve closure either clockwise or anticlockwise. Any clockwise / British Standard valve found must be updated accordingly within GIS. rmal Valve Status The status that the valve has to be returned to after the work is complete. Section 3 Backfeed and Temporary Boundary Valves created (If applicable) BACKFEED AND TEMPORARY BOUNDARY VALVE CREATED ( If applicable ) Asset ID Asset Description Asset Location Current Valve Status Open / Closed Valve Closure Direction Anti Clockwise / Clockwise rmal Valve Status Valve to be returned to Open / Closed mm Water Supply Zone Valve Rear of 39 O'Neill Avenue in the lane on grass verge. Open Anti Clockwise Closed Pressure Checked on site Pre Valve Ops NORMAL OPERATING PRESSURE Recorded onsite 2Bar Checked & Recorded by Name Designation Date and Time William Langan NSO 20/5/14 Temp Boundary Valves Updated onto GIS (If more than 3 Days) Asset ID This section shall be populated by CSD staff authorising the DOMS IAF from GIS Asset description Confirmation of the description and type of Boundary Valve. Asset Location The physical location of the Boundary Valve. Current Valve status The current valve status onsite. i.e. Has the boundary valve been operated and left open to implement any Back feed etc. Valve Closing Direction Direction of valve closure either clockwise or anticlockwise. Any clockwise / British Standard valve found must be updated accordingly within GIS. rmal Valve Status The status that the valve has to be returned to after the work is complete. Pressure Checked Confirmation Pressure checked, pre BV operation Pressure Checked Confirmation of the normal operating pressure in the network. Pressure Checked & Recorded Confirmation name date and time checked Confirmation any Temp boundary valves created Temp Boundary Valves If any BV is opened for more than 3 days and temp BVs must be updated onto GIS Page 6 of 14

7 te All Boundary Valves will only be operated by designated staff who are authorised by the local Water Operation Regional Manager. Section 4 Pressure checks information PRESSURE CHECKS INFORMATION Fire Hydrant Asset ID Fire Hydrant Address Is Fire Hydrant missing if not please give Co-Ordinates Fire Hydrant Pressure Either side of B.V. Up Stream and Down Stream Name, Date & Time pressure was taken Outside no 37 O'Neill Avenue on footpath , Bar W Langan 9:40am Outside no 5 O'Neill Avenue on footpath , Bar W Langan 9:55am Fire Hydrant Asset ID This section shall be populated by CSD staff authorising the DOMS IAF from GIS Fire hydrant Address The physical address, location of the fire hydrant. Fire hydrant coordinates X, Y coordinates of hydrant. Fire Hydrant Pressure Confirmation of the pressures recorded both Up Stream and Down Stream of Boundary Valve. Name, Date & Time pressure taken Confirmation of the person carrying out pressure checks on site. Section 5 Drain Down & Re-charge DRAIN DOWN & RE-CHARGE MAINS ( AIR VALVES / HYDRANTS / SCOURS ) Asset ID Asset Description Asset Location Status Open / Closed Instruction / Comments Fire Hydrant Outside no 5 O'Neill Avenue on Footpath Open Drain down & re-charge network Additional Checks. I.e. Main to be bored and tapped Additional Requirements Confirmed Network Isolation complete After Valve Ops PRESSURE Recorded onsite after Valve Ops Network Isolation Checked & Recorded / signed off by Name / Designation Date and Time Water Ops NSO 9:40am Asset ID This section shall be populated by CSD staff authorising the DOMS IAF from GIS Asset description Confirmation of the description and asset used of drained down or airing he system during mains re-charge. Asset Location The physical location of the asset used Status The current status onsite. Instruction / Comments Confirmation on Operational requirements i.e. BV Flushing, Drain down & re-charge network etc. Additional s Confirmation on any additional site specific Operational requirements for checking of the main has been isolated. i.e. Main bored & tapped Confirmed Network Isolation Confirmation the main / network is shut off. Pressure Recorded Confirmation Main shut off and a Negative Pressure within the main. Network Isolation Checked & Recorded Confirmation the main / network is isolated Signed off with their Name, Designation, Date and Time. Section 5 Risks to the Network This section requires for a review and assessment for any potential or actual risks for the following areas Loss of Supplies, Contamination, Discolouration, Additional Bursts, Reduced Pressure etc and the documented Impacts and Actions required to avoid or lessen impact with affecting the Water Quality & or the supply s to customers or causing any other adverse impacts to the water network. Each of the following risks has two options from a or perspective. Page 7 of 14

8 RISKS TO THE NETWORK Risk to Network Loss of Supply Possible loss of supply to customers properties Possible shut line valves else where on the network out with planned shut off. Impact If valve not excavated and operable the shut off needs to be extended to another additional 103 properties which will affect Beach Rd and include a Primary school and hairdresser. Sluice Valves checked before commencing work on site. Pressure and flow checks on network out with shut area to ensure only customers within the known shut are only affected. Action to Avoid or Lessen Impact Excavate Valve and fit new valve head or cancel and re-warn customers. Loss of Supply Shut Valves on Network Check Valves Out with Shut Loss of supply Impact what are the potential or actual Impacts water to specific location street name/names i.e. Extended Shut off required, If valve not excavated and operable the shut off needs to be extended to another additional 103 properties which will affect Beach Rd and include a Primary school and hairdresser. Impact what are the potential or actual Impacts PRV Failure, Shut Valves on Network, Backfeed, Other work on Network, Valve in-operable, Valve t Checked Action what action(s) you have or are required to take to avoid or lessen impact of work i.e. Excavate Valve and fit new valve head or cancel and re-warn customers. Action what action(s) you have or are required to take to avoid or lessen impact of work e.g. Check Valves Out with Shut, Check Flows & Pressures, Update Ops Log Pre & Post Valve Ops, Monitor Customer Contacts, Alternative Supplies, Night Shift Work, PRV Altered, Customer tification Contamination Contamination from possible back siphonage or dirty water entering main during shut down. Air valves with chambers flooded Possible stagnant water behind closed BV Ground water entering main Follow HCOP disinfection procedures & Sample mains repairs / interventions not carried out under pressure Adequate sump and pump hole within excavation minimum depth 150mm. Flush hydrants up and down stream of BV. 37 & 119 O'Neill Avenue on footpath for flushing the main when opening BV Sump hole below pipe invert 150mm minimum Contamination BV Ops Stagnant Water Flush upstream & downstream of BV Contamination Impact what are the potential or actual Impacts I.e. Possible stagnant water behind closed Boundary Valve or Ground water entering main from back siphonage or other potential contamination. Impact what are the potential or actual Impacts BV Ops Stagnant Water, Working in Contaminated Land, Working in Farmland, Damaged Sewer or Drain, Air Valve Chamber flooded, Ground Water Back Sphionage into main Action what action(s) you have or are required to take to avoid or lessen impact of work i.e. Flush hydrants up and down stream of BV. 37 & 119 O'Neill Avenue on footpath for flushing the main when opening BV Sump hole below pipe invert 150mm minimum. Action what action(s) you have or are required to take to avoid or lessen impact of work e.g. Disinfection all tools & materials etc, Adequate Sump & Pump 150mm minimum, Flush Mains, Sample main, Segregate Working area from Live stock, Flush upstream & downstream of BV, Check Air Valve Chambers Page 8 of 14

9 Burst Possible additional burst mains with Air in the system from main being recharged to quickly Increase in pressure with BVs or PRV's being operated Opening Boundary Valve to Quickly WSZ valve opened with increase in pressure Leave identified hydrant open to air the system. All valves to be operated as per training allowing sufficient time too recharge. Any Air valve chambers checked. Slowly Shut and Open valves and open hydrant outside 5 O'Neill Avenue to Drain and Air the system. Check and monitor Pressure and flow checks on network out with shut area Burst BV or PRV operation increased Pressure Operate all valves slowly and in correct sequence Burst Impact what are the potential or actual Impacts I.e. Opening Boundary Valve to Quickly, WSZ valve opened with increase in pressure Impact what are the potential or actual Impacts BV or PRV operation increased Pressure, Water Hammer Shutting Valves too quickly, Air trapped in the Main, Re-charging Main too quickly, Action what action(s) you have or are required to take to avoid or lessen impact of works i.e. Slowly Shut and Open valves and open hydrant outside 5 O'Neill Avenue to Drain and Air the system. Check and monitor Pressure and Flow checks on network out with shut area Action what action(s) you have or are required to take to avoid or lessen impact of work e.g. Operate all valves slowly and in correct sequence, PRV altered to correct pressure, Air system through air valves & hydrants, Check & monitor Flows & Pressures, Discolouration Discolouration of water due to known / historical water quality in this areas due to Manganese. BV opened without flushing. Re charge main to quickly causing discolouration after mains repair and or dirty water entering main during repair. Flush Identified Fire hydrant for required period to remove discolouration. Night Shift work required. Flush hydrants up and down stream of BV. 37 & 119 O'Neill Avenue on footpath for flushing the main when opening BV Flush Fire hydrant opposite no 5 O'Neill Ave for required period to remove discolouration after repair. Discolouration BV or PRV operation increased Pressure BV Operations Flush main up & downstream of BV Discolouration Impact what are the potential or actual Impacts I.e. BV opened without flushing. Re charge main to quickly causing discolouration after mains repair and or dirty water entering main during repair. Impact what are the potential or actual Impacts I.e. BV or PRV operation increased Pressure, Operating Valves too quickly, Re-charging Main too quickly, Stagnant Water / Dead Legs, High velocity burst main scouring main, Known or Historical water quality issues i.e. Manganese, Flow reversal, Action what action(s) you have or are required to take to avoid or lessen impact of works i.e. Flush hydrants up and down stream of BV operations. 37 & 119 O'Neill Avenue on footpath for flushing the main when opening BV. Flush Fire hydrant opposite no 5 O'Neill Ave for required period to remove discolouration after repair. Action what action(s) you have or are required to take to avoid or lessen impact of work e.g. Monitor flows & pressures Pre & Post Valve Ops, Re-charge main slowly & Flush Hydrant to remove discolouration, Nightshift work, BV Operations Flush main up & downstream of BV, Warn customers, Throttle valves to reduce flow / pressure, Alter PRV correctly, Page 9 of 14

10 Reduced Pressure or Increased Pressure. Reduced or Increase in pressure with BVs or PRV's operated Contact Water Operations or Leakage Delivery to set any PRV's required to correct pressures. Pressure and flow checks on network out with shut area to ensure only customers within the known shut are only affected. Reduced Pressure or Increased Pressure. BV Operations Monitor flows & pressures Pre & Post Valve Ops Other Reduced Pressure or Increase in Pressure Impact what are the potential or actual Impacts I.e. Increase in 1.5 bar of Pressure due to WZS valve used as back feed. Impact what are the potential or actual Impacts I.e. BV Operations, PRV Operations, Operating valves too quickly, Action what action(s) you have or are required to take to avoid or lessen impact of work i.e. Operate BV as part of Nightshift work and Monitor flows & pressures Pre & Post BV operations. Action what action(s) you have or are required to take to avoid or lessen impact of work e.g. Monitor flows & pressures Pre & Post Valve Ops,Re-charge main slowly & Flush Hydrant to remove discolouration, Nightshift work, BV Operations Flush main up & downstream of BV, Warn customers, Throttle valves to reduce flow / pressure, Alter PRV correctly, Other Impact Any other potential or actual Impacts Impact Any other action(s) you have or are required to take to avoid or lessen impact of work. Section 5 Risks to the Network (continued) RISKS TO THE NETWORK CUSTOMER NOTIFICATIONS INCLUDING KEY AND SENSITIVE CUSTOMERS (Please delete either yes or no and place a 'X' in relevant box) Commercial, Industrial, Other Medical, Public Authority and Other CUSTOMERS TO BE NOTIFIED Planned Work Customers Type. Details of Customer Impact to Customer Action to Avoid or Lessen Impact t Applicable t Applicable t Applicable Customers HAVE BEEN tified Letter Press Visit to Door Leaflet Loudhailer Customer tification including Key/Sensitive Customers Provide details of any known Key/Sensitive Customers affected by site works e.g. Hospitals; Schools etc. Give details of what action(s) you have taken to avoid or lessen impact of work e.g. supplied bottled water or organised overland or other alternative supplies The whole sale service desk must be informed with the ops log updated. Customer to be tified Confirmation if customers are to be notified of planned work Customer type Confirmation of Customers type i.e. Hospital, School, Impact to Customer Confirmation of the type of impact to customer Water / Poor Pressure / Discolouration etc Action to Avoid or Lessen Impact Confirmation of the actions to minimise the impact to customer i.e. Overland Supply, Nightshift work, Out with rmal Working Hours, Weekend work, Bottled Water Issued, Tankering into Supply Customers have been tified Confirmation customers have been given notification. Confirmation on the type of notification given to customers. i.e. Letter, Loudhailer etc Page 10 of 14

11 GIS search for Key Account Customers 1. Object Control - Under: Foreground (Smallworld Datastore) --> Customer Information --> double click on 'Key Account Customer' This activates the Key Account Customer editor. 2. Select 'Clear' at bottom of editor 3. Select 'Browse...' --> activates Object Browser and lists all Key Account Customers Scotland Wide Section 6 DOMS IAF Authorisation DOMS IAF AUTHORISATION COMPLEX SHUT ( EMERGENCY WORK ) Authorised by SW Staff Name designation & Signature J Martin Water Ops Team Leader Date 20/05/2014 PLANNED COMPLEX SHUT REVIEWED AT NETWORK CONTROL MEETING Authorised by SW Staff Name designation & Signature t Applicable Date COMPLEX SHUT DOWN GRADED to Low Risk Authorised by SW Staff Name designation & Signature t Applicable Date DOMS IAF Authorisation This is section must be completed by SW Customer Ops staff given their authorisation to either internal or external staff to allow access onto the network, Planned Complex shuts must be authorised by the relevant local Network control forum. Section 7 Onsite Pre Work tification & Communication ONSITE PRE WORK NOTIFICATION Valve Operator or Squad tification Valve Operator Have You Contacted? / tification By Name & Designation Date / Time Comments Ops Log Updated Pre Valve Ops Water Ops NSO 9:00am Informed Ops log starting Back feeding operation and isolating main for mains repair. Boundary Valve Control Centre Pre Valve Ops Water Ops NSO 9:05am Updated BV control line. BV Opened up and Main flushing Network Isolation checked & confirmed by SW Staff and Hand Over to Contractor / Squad Hand Over to Contractor / Squad Name of Contractor or Squad Network handed over too. 9:50am Water Ops NSO Confirmed main shut and handed over to Water Response Squad. Communication Before any Network activity The Call centre must be contacted & notified for the Operations log to be updated by the valve operator from site before any valves are operated and contacted again after the work has been completed, when the supplies are being restored. Ops Log Updated Pre Valve Ops Confirmation Ops log updated. tification By Name & Designation Confirmation of Valve operator name designation Date & Time Updated Confirmation off time ops log updated. Comments any additional information provided. I.e. Informed Ops log starting Back feeding operation and isolating main for mains repair. BV Authorisation and BV Operators All Boundary Valves MUST be authorised prior to operation. A comprehensive list Of All Staff for both the BV Authorisation and BV Operators will be updated by the Regional Manager and retained by the BV control line for Boundary Valve Management with any Un- Authorised BV operations being reportable to the Local Water Operation Regional Manager for action. BV Control contacted Pre & Post valve Operation Page 11 of 14

12 Confirmation the valve operator has contact BV control from site prior to valve operation to close and on completion of the work to the Close position. All Boundary Valves will only be operated by designated staff who are authorised by the local Water Operation Regional Manager. BV Control Updated Pre Valve Ops Confirmation Ops log updated. tification By Name & Designation Confirmation of Boundary Valve operator, name designation Date & Time Updated Confirmation of the time the Boundary Valve line updated. Comments any additional information provided Onsite Post Work tification & Communication ONSITE POST WORK NOTIFICATION Valve Operator or Squad tification Valve Operator Have You Contacted? tification By Name & Designation Date / Time Comments All Valves returned to correct status? yes / no Water Ops NSO 9:00am All VALVES returned to correct status All Boundary Valves returned to correct status? yes / no Water Ops NSO 9:00am BV Returned to correct status Ops Log Updated Post Valve Ops Water Ops NSO 9:00am Main recharged with hydrant at 5 O'Neill Ave left flushing due to discoloration Boundary Valve Control Centre Pre Valve Ops COMPLETED IAF sent to DOMS e mail inbox doms@scottishwate r.co.uk Water Ops NSO 9:00am Update BV Control Water Ops NSO 9:00am DOMS IAF e mailed to doms@scottishwater.co.uk All Valves returned to correct status Confirmation that all control valves returned to open position with the valve operator name, designation, date time and any additional comments required. All Boundary Valves returned to correct Status Confirmation Boundary valves returned to closed position with their name, designation, date time and additional comments required. Ops Log Updated Confirmation that the valve operator has Call centre has been contacted & notified for the Ops log to be updated. The operation log must be contacted by the valve operator from site before the valves are operated and contacted again after the work has been completed, with the water supply restored. BV Control contacted Pre & Post valve Operation Confirmation the valve operator has contact BV control from site prior to valve operation to close and on completion of the work to the Close position. BV Control Updated Post Valve Ops Confirmation Ops log updated. tification By Name & Designation Confirmation of Boundary Valve operator, name and designation. Date & Time Updated Confirmation of the time Boundary Valve line updated. Comments any additional information provided Completed DOMS IAF Confirmation the completed DOMS IAF has been e mailed into the DOMS e mail inbox with their name, designation, date time and additional comments required. Page 12 of 14

13 Water Sampling & Post Operational Review WATER SAMPLING DETAILS Water Sample Taken? Please delete either yes / no LIMS Reference Number Sampler Name & EUSR number t Applicable, Clamp used & repaired under pressure POST OPERATIONAL REVIEW Post Operational Review: Risks encountered but not accounted for during operational activity on the water network, i.e., Unplanned Interruptions to Supply or Water Quality Issues, Incorrect GIS & Updates Required.& their impact with any property Numbers Locations etc Asset ID Asset Description Asset Location Valve Status Open / Closed Operational Issues Valve Seized / Leaking etc Unknown not on GIS Fire Hydrant Hydrant at rear off 42 O'Neill Avenue on grass verge. Closed Missing from GIS x,y co ordinates , PLEASE PROVIDE DETAILS BELOW FOR Any UNPLANNED Water Quality Issues / Unplanned Interruptions to Supply Issues / Other Issues Water Sampling Details Confirmation if a water sample is actually required for work activity undertaken on the network. Confirmation of any water sample details including the LIMS sample Ref number and the sampler name and their EU skills number Post Operation Review This is to be completed when and if required to highlight any network issues that have occurred during the work on the water network. I.e. Any valves broken, Leaking Valves or incorrectly recorded on GIS i.e. British standard valves etc or Any other areas / streets etc affected but shut off / back feed did not work or water complaints, dirty water complaints or Poor pressure complaints recorded from x, y streets or properties etc? Page 13 of 14

14 C.A.L.M. Initiative REMEMBER C.A.L.M!! WHEN WORKING ON SCOTTISH WATERS DISTRIBUTION WATER NETWORK I.E For a clockwise opening valve CHECK Check the valve position and status turn the valve fully clockwise until it stops, always count the turns to this point, this will confirm the valve is full open. ACTUATE It is important to understand that closing a valve using the correct technique is as important as when the valve is being opened. When actuating the valve the following should be followed; Closing The valve should be closed at a constant slow pace until 75% closed. The operator should then close the remaining 25% using a 5 stage approach e.g. 5% wait 30 secs and so on. Remember the last 25% will stop 50% of the flow. Opening From the fully closed position the reverse of the above technique should be followed e.g. First 5% until the valve stops sounding then increments until 25% open. Pause 30 secs then open the remainder slowly and consistently. LISTEN Listening/sounding the valve throughout it s operation is critical to understanding the affects of its operation MONITOR It is important to be observant when carrying out valve operations, you should constantly monitor the situation for example; Before we are committed to work Be sensitive to customers who come out to complain of an interruption from the wider area. Take pressure pre and post valve ops confirming affected area. Call customer contact centre checking if there are any unplanned issues associated with you operations. Reminder for all staff on good practice for the correct method when operating valves and hydrants etc on the Water network. Network Control forums have been set up to review and Authorise all Planned COMPLEX shuts. COMPLEX SHUT CRITERIA is any shut off required which meets any of the following criteria 1. Any Main 200mm or above in size? 2. Is a Strategic Main going to be affected? 3. Is it a multiple valve change job which requires NSO support (generally 5 Valves or more)? 4. Is Back-feeding required? 5. Is a District Metering Area (DMA) or Boundary Valve going to be changed? 6. Are any Key Customers, Hospitals or Prisons going to be affected? COMPLEX shut Criteria Reminder for all staff on COMPLEX shut Criteria Page 14 of 14