ISO 20468-10:2025 PDF

Name: ISO 20468-10:2025 — Performance evaluation of treatment technologies for water reuse systems — Part 10: Guidelines for evaluation of dependability of treatment systems
SKU: ISO 20468-10:2025
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Performance evaluation of treatment technologies for water reuse systems — Part 10: Guidelines for evaluation of dependability of treatment systems

Название (английский):

ISO 20468-10:2025

Performance evaluation of treatment technologies for water reuse systems — Part 10: Guidelines for evaluation of dependability of treatment systems

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 8 декабря 2025 г.
Издание:: ISO IS 20468 edition 1 version 1
ICS:: 13.020.40

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Описание (английский):

This document provides guidelines for evaluating the dependability represented by the availability of treatment systems for water reuse. The document specifies methodologies for both qualitative and quantitative assessments of availability on a life cycle basis.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 20468-10:2025 - "Performance evaluation of treatment technologies for water reuse systems - Part 10: Guidelines for evaluation of dependability of treatment systems" provides standardized guidance to evaluate the dependability of water treatment systems used in water reuse. The document defines dependability primarily in terms of availability over the asset life cycle and specifies both qualitative and quantitative assessment methodologies. It is intended to support planning, design, operation and benchmarking of water reuse treatment systems.

Key topics and technical requirements

Scope and objective: Guidelines for assessing availability of treatment systems for water reuse on a life cycle basis.

Dependability concept: Dependability is represented by availability and influenced by reliability, maintainability, and maintenance support performance.

Availability metrics: Uses standard availability relationships (inherent availability expressed by MTBF / (MTBF + MTTR)) and distinguishes uptime and downtime.

Performance Control Points (PCPs): Critical unit processes are identified as PCPs; availability of the overall system depends on availability of individual PCPs and their integration.

Assessment methods:

Qualitative assessment - based on maintenance strategies, benchmarks and preventive maintenance concepts (useful in planning and design).
Quantitative assessment - based on collected operational data (mean time between failures, mean time to recovery, uptime/downtime) for operation-stage evaluation.

Evaluation procedure: Steps include setting evaluation boundaries, selecting PCPs, defining failure states and confirming PCP requirements, then conducting qualitative and/or quantitative availability assessments.

Benchmarking: Recommends setting availability benchmarks for comparison and improvement.

Applications and users

Practical applications include:

Selecting and comparing treatment technologies during planning and design of water reuse projects.

Operational performance monitoring and O&M optimization of membrane systems (RO, NF), UV, biological and chemical unit processes.

Life cycle performance evaluation that integrates dependability with environmental (GHG) and economic (LCC) assessments from the ISO 20468 series. Who will use it:

Water reuse project managers and planners

Treatment plant designers and system integrators

Operators, maintenance managers and asset managers

Consultants, regulators and risk/performance assessment specialists

Related standards

ISO 20468 series (performance evaluation of treatment technologies)

ISO 20468-1 (general requirements)

ISO 20468-2 (environmental performance / GHG)

ISO 20468-8 (economic evaluation / LCC)

ISO 20670 (water reuse vocabulary)

ISO 20426 (risk control approach and PCPs referenced)

Keywords: ISO 20468-10:2025, dependability, availability, water reuse, treatment systems, availability assessment, lifecycle evaluation, PCP, MTBF, MTTR, preventive maintenance, benchmarking.

ISO 20468-10:2025 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

BS ISO 20468-2:2019

Guidelines for performance evaluation of treatment technologies for water reuse systems. Methodology to evalu…

ISO 20468-1:2018

Guidelines for performance evaluation of treatment technologies for water reuse systems — Part 1: General

ISO 20468-8:2022

Guidelines for performance evaluation of treatment technologies for water reuse systems — Part 8: Evaluation…

BS ISO 20670:2023

Water reuse. Vocabulary.

ISO 20426:2018

Guidelines for health risk assessment and management for non-potable water reuse