Abstract
The subject of the publication is to present the method of water consumers safety analysis and assessment to implement the so-called Water Safety Plans (WSP), recommended by the World Health Organization (WHO) in Poland. The paper presents the method of water consumers safety analysis and assessment, which is based on failure mode and effects analysis (FMEA). The failure mode and effects analysis is widely used to analyse the reliability and safety of products and processes in technical systems. The procedure in the FMEA is based on the identification of potential undesirable events, assessment of effects and determining the causes of these events, assessment of frequency, the possibility of detection, estimating validity of the actions and estimating how to prevent undesirable events, re-examining and assessment of these events. The developed method of water consumers safety analysis and assessment is a complement and extension of recommended for WSP matrix methods, which according to the author's opinion is not sufficient for a proper analysis of undesirable events that may happen in collective water supply system (CWSS). The use of the FMEA method will allow for better identification of existing hazards and to determine the cause–effect relationships between them. Reliable access to drinking water is one of the basic conditions for the development of civilization.
Highlights
According to the act [1] collective water supply system (CWSS) is part of the critical infrastructure
The method of failure mode and effects analysis FMEA allows to analyse the product or process, to determine weak points and to introduce improvements and new solutions to eliminate the source of undesirable events
If the value of the risk priority number (RPN) is higher than 100 (ULS), one must submit a proposal for remedial actions, indicate the person responsible for their implementation and the planned completion date
Summary
According to the act [1] collective water supply system (CWSS) is part of the critical infrastructure. This system is crucial for the functioning of society and the state. Wrong functioning of CWSS may be a threat to people health or lives. CWSS must be characterized by a high degree of reliability and safety [2, 3, 4]. Water consumers safety is defined as the probability of avoiding threats associated with the consumption of poor quality water or lack of water supply. Water consumers safety is affected by a number of factors, which include, among others: - the state of water supply infrastructure, - the state of monitoring, - exposure to internal and external threats, - way to protect consumers against the consequences of undesirable events,
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