This document provides guidance for water utilities on the detection and classification of water and wastewater events.<\/p>\n
The following subjects are within the scope of this document:<\/p>\n
publicly and privately owned and operated water utilities. It does not favour any particular ownership or operating model;<\/p>\n<\/li>\n
all aspects of the drinking water system and the wastewater system;<\/p>\n<\/li>\n
all causes of abnormal changes in water and\/or wastewater service provision capable of detection by monitoring systems including accidents, unexpected operational changes, natural hazards and intentional disruption.<\/p>\n<\/li>\n<\/ul>\n
This document is independent of the measurement methods used to collect the data.<\/p>\n
The document focuses on events which could imminently affect the water utility\u2019s interested parties.<\/p>\n
The following are outside the scope of this document:<\/p>\n
methods of design and construction of drinking water and wastewater systems;<\/p>\n<\/li>\n
plumbing and drainage systems not under the control of the water utility.<\/p>\n<\/li>\n<\/ul>\n
This document does not include details about action taken as a result of event detection. For such details see ISO 24518 and EN 15975 Part 1.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Principles of an event detection process 4.1 Design phase 4.1.1 General <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.1.2 Influence matrix table and EDP <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.1.3 EDP inputs 4.1.4 EDP design <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.1.5 EDP target service level design 4.2 Detection phase 4.2.1 General 4.2.2 Validation process <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4.2.3 Further event monitoring 4.3 Ongoing activities 4.3.1 Post-event EDP evaluation 4.3.2 Periodic reviews 4.3.3 Validation of links between phenomena and risk materialization <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 4.3.4 Estimation 4.3.5 Decision-making 4.3.6 Guidance on interpretation 5 The event detection cycle and the role of the EDP 5.1 The EDP’s application of the event detection cycle (the EDP cycle) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.2 Development and regular review of an EDP-based event detection capability 5.2.1 General <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.2.2 Listing of possible event indicators 5.2.3 IMT establishment 5.2.4 EIT establishment 5.2.5 IMT and EIT periodic review 5.3 Deployment of an event detection procedure 5.3.1 General <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 5.3.2 Defining the possibility of an event’s occurrence 5.3.3 Nature of water\/wastewater measurement sampling considerations 5.3.4 Results assessment <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 5.3.5 Missing inputs 5.3.6 Unfamiliar combination of inputs 5.3.7 Deviation from normal frequency detection 5.3.8 Measurement grouping 5.4 Classification of events and evaluation of the classification procedure 5.4.1 General <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5.4.2 Process-based classification 5.4.3 Actual classification <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 5.4.4 Assignment of weights 5.4.5 Frequency calculations 5.4.6 Classification efficiency estimation 5.4.7 Classification evaluation 5.5 Notification to relevant personnel\/systems 5.6 Documentation of events 5.6.1 General <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 5.6.2 Time stamps 5.6.3 Subsequent documentation 5.6.4 Responsible person documentation 5.6.5 Documentation authority 5.6.6 Data security 5.7 Validation process \u2014 Periodic evaluation of the detection process 5.7.1 General 5.7.2 Confidence-level assignment <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 5.8 Periodic system evaluation \u2014 System functionality 5.9 EDP development \u2014 General principles and governance 5.9.1 EDP operation 5.9.2 Access to the EDP 5.9.3 User training and qualification <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 5.9.4 Testing and certification 5.9.5 EDP output expression 5.9.6 EDP output presentation <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Annex A (informative) Examples of typical event indicators that could be used as EDP inputs <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Annex B (informative) Influence matrix table (IMT) <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex C (informative) Event identification table (EIT) <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Annex D (informative) Examples of statistical methods for the evaluation of event classification within the EDP <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Annex E (informative) Signal measurements’ grouping <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Annex F (informative) Verifying the EDP\u2019s response to potential types of events <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | Annex G (informative) Classification of potential events detected <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Annex H (informative) Event classification performance guide <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Event detection process: Guidelines for water and wastewater utilities<\/b><\/p>\n |