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BS EN 16941-1:2024

BS EN 16941-1:2024

$167.15

On-site non-potable water systems – Systems for the use of rainwater

Published By Publication Date Number of Pages
BSI 2024 52
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This document specifies the requirements and gives recommendations for the design, sizing, installation, identification, commissioning and maintenance of rainwater harvesting systems for the use of rainwater on-site as non-potable water. This document also specifies the minimum requirements for these systems. Excluded from the scope of this document are – the use as drinking water and for food preparation, – the use for personal hygiene purposes, – attenuation and – infiltration. NOTE Conformity with the document does not exempt from compliance with the obligations arising from local or national regulations.

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
2 Normative references
11 3 Terms and definitions
12 4 Functional elements of rainwater harvesting systems
5 Design
5.1 Collection
5.1.1 General
13 5.1.2 Collection surfaces
5.1.2.1 Qualitative aspects
5.1.2.2 Quantitative aspects
5.1.3 Collection piping system
14 5.2 Treatment
5.2.1 General
5.2.2 Preliminary treatment
5.2.3 Treatment in storage device
15 5.2.4 Additional treatment
5.3 Storage
5.3.1 General
5.3.2 Materials
5.3.3 Dimensions
5.3.4 Capacity
5.3.5 Structural behaviour
16 5.3.6 Watertightness
5.3.7 Connections and internal pipe system
5.3.8 Access
5.3.9 Overflow
17 5.4 Back-up water supply
5.4.1 General
5.4.2 Backflow protection device
20 5.5 Pumping
5.5.1 General
5.5.2 Submerged pump
21 5.5.3 Non-submerged pump
5.5.4 Expansion vessel
5.5.5 Pump control unit
22 5.6 System control with monitoring
5.7 Metering
5.8 Distribution
23 5.9 Risk assessment
6 Sizing
6.1 Storage device
6.1.1 General
24 6.1.2 Determination of the available volume of rainwater
25 6.1.3 Determination of the non-potable water demand
26 6.1.4 Calculation methods
6.2 Back-up water supply
27 7 Installation
28 8 Differentiation and identification
9 Commissioning
29 10 Quality of non-potable water
11 Maintenance
30 Annex A (informative)Examples of calculation methods for storage capacity
A.1 General
A.2 Examples of calculation methods
A.2.1 Basic approach with annual time step
31 A.2.2 Detailed approach
A.2.2.1 General
32 A.2.2.2 Input data
A.2.2.3 Simulation principle
33 A.2.2.4 Application of results
35 Annex B (informative)Examples of rainwater harvesting systems with different back-up supply arrangements
38 Annex C (informative)Example for a commissioning sheet
40 Annex D (informative)Example of dye testing for distribution pipework cross-connections
41 Annex E (informative)Inspection and maintenance
E.1 Inspection and maintenance instruction sheet
42 E.2 Logbook

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BS EN 16941-1:2024
$167.15