So you have a plan... what next?

Transcription

1 So you have a plan... what next? Embedding risk management into operations for recycled water schemes Dr Nanda Altavilla Urban Water LGNSW Water Management Conference August 2015

2 Role of DPI Water regional water recycling LWU WIC Act DPI Water R & D Approval under s.60 LG Act or s.292 WM Act NRWRF

3 Preventive risk management -Water quality management systems

4 Need for guidance Application of national guidance in NSW context Pathway for s60 approvals Requirements to meet 12 elements Updated info from 2006 AGWR

5 Need for guidance Essential information tables Checklists RWMS template Incorporated workshop feedback Cross referenced to information sheets

6 Information Sheet 1. It s too late benefits of preventive risk management Overview and benefits 2. Indicators, Reference Pathogens & Log 10 Reductions: What does it all mean? Technical 3. Calculating Log Reduction Values Technical 4. Critical Control Points Technical 5. Non treatment barriers: End use and onsite controls Technical 6. Types of monitoring Technical 7. Validation & Verification What s the difference? Technical 8. Getting chlorination right Technical 9. User Agreements Advice 10. Recycled Water Incident Notification and Response Advice

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8 So you have a plan what next? Cannot be effective if it is simply prepared by an external consultant and then left on a shelf (Adapted from Hrudey and Hrudey, 2014) RWMP

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10 Critical Control Points CCPs Information Sheet 4 Process which is critical to control hazards e.g. Disinfection Operational procedures and process control (4) CCPs S M A R T Is there a significant risk managed by the process? Can the process be measured and limits established where action needs to be taken? Are there actions that can be implemented if the process is measured to be outside acceptable limits Will these actions reduce the risk? Can the measurements and response actions be carried out in a timely manner?

11 Critical Control Points CCPs

12 Critical Control Points CCPs

13 Critical Control Points CCPs Working in CCP mode Focus on critical processes Can be applied to all plants for ensuring water quality Simplified for operators Working OUTSIDE CCP mode

14 When it all goes pear shaped

15 Incident Management Information Sheet 10 for Public Health you don t know the value of a incident protocol until you have to use one Management of incidents and emergencies (6) Identification of possible incidents prior to occurrence Who needs to be contacted in the utility other organisations media Training and review Learning from mistakes or near hits

16 Saying an accident is due to human failing is about as helpful as saying that a fall is due to gravity (Kletz, 2001) Humans inevitably make mistakes. The focus of reviewing a failure needs to be on how a system allowed a simple mistake or set of mistakes to have disastrous consequences. If we are to reduce failures and minimize consequences, we must have systems (including effective monitoring checks and balances) that can accommodate human error without allowing catastrophic outcomes. (Adapted from Hrudey and Hrudey, 2014)

17 Monitoring Information Sheets 6 & 7 Monitoring to ensure that recycled water is consistently provided to a quality that is fit for purpose. Types of monitoring Baseline monitoring Validation monitoring Operational monitoring CCP monitoring Verification monitoring Baseline monitoring Where are we now? Operational monitoring Is it working now? Validation monitoring Will it work? Verification monitoring Did it work?

18 Monitoring Information Sheets 6 & 7

19 Commitment to responsible use and management of recycled water Organisational commitment Should be the same level of commitment as for drinking water More highly contaminated source from humans Public likely to be exposed

20 Commitment to responsible use and management of recycled water A plan should be a living document that engages all parties in the system, responds to continuing changes in the system, and is capable of achieving a fundamental culture change from being strictly reactive to being primarily preventive. This requires an engagement and commitment by all of the key personnel in a utility. (Adapted from Hrudey and Hrudey, 2014)

21 Review and audit Dual pipe scheme needs independent audit prior to operation All schemes should review data and performance Annual return to DPI Water Review and Audit

22 Review and audit Do not blindly perform regulatory requirements; rather seek to fully understand why these requirements are specified and what must be achieved. Adapted from Hrudey and Hrudey, 2014

23 Clearer communications- utility, regulators, recipients Benefits of a recycled water management system Information sheet 1 Commitment to reliable and safe water All levels of organisation Prevention of incidents Economic Identification of redundant monitoring Demonstration of standard of duty and due diligence Continuous improvement Increased understanding

24 DPI Water Training Case studies Step through guidance and information sheets by doing 6 activities covering: Regulatory Pathways Pathogen Log Reduction Critical Control Points Chlorination and UV as a CCP Monitoring and incidents End User Agreements Utility talk - Benefits of water quality management systems for utilities

25 DPI Water Training The workshop dates and locations are: Wed 2nd September - Griffith Wed 14th October - Queanbeyan Wed 28th October - Ballina (to follow the AWA NSW Engineers & Operators Regional Conference) Wed 11th November - Port Macquarie

26 DPI Water Documents can be found under further resources

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