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BS EN 12255-12:2024

BS EN 12255-12:2024

$142.49

Wastewater treatment plants – Control and automation

Published By Publication Date Number of Pages
BSI 2024 30
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This document specifies general requirements for instrumentation and specific requirements for process control and automation systems on wastewater treatment plants for more than 50 PT. NOTE 1 Because of the rapid rate of development of sensor and control equipment, this document is intended as an overview and uses examples and general requirements, not detailed equipment specifications. Detailed information additional to that contained in this document can be obtained by referring to the Bibliography. NOTE 2 Although EC directives become matters of law in member states of the EU and some other situations, this standard is intended for wider use and hence those directives with clear technical guidance of a type that would generally be appropriate in a standard are referenced in the text and listed in the Bibliography. The alternative of listing requirements copied from directives would potentially create unacceptable conflict when directives are revised.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Symbols and abbreviations
10 5 Instrumentation and control requirements
5.1 General requirements
5.2 Instruments
5.3 Instrumentation systems
5.3.1 Instrumentation systems
11 5.3.2 Instrumentation
5.3.3 Cabling, cable bracketry and cable conduits
5.3.4 Operation and maintenance of instrumentation
12 5.4 Process control and automation
5.4.1 General requirements
5.4.2 Specification and installation requirements for process control and automation systems
13 6 Design and implementation
6.1 Initial design
6.2 Detailed design
14 6.3 Commissioning, test and take over
15 Annex A (informative)Guidance for the selection of instrumentation, control and automation systems
A.1 General
16 A.2 Instrumentation life cycle
A.2.1 Overview
A.2.2 Stage 1 – Instrumentation purpose
A.2.3 Stage 2 – Instrumentation specification
17 A.2.4 Stage 3 – Installation
A.2.5 Stage 4 – Operation and maintenance
18 A.2.6 Stage 5 – Review and replacement
A.3 Examples of basic instrumentation and control systems
A.3.1 General
A.3.2 Simple relay-based control systems
19 A.3.3 Programmable logic controller (PLC) based instrumentation and control systems
20 A.3.4 Advanced process control
21 A.4 The level of instrumentation, control and automation in wastewater systems
A.4.1 Overview
A.4.2 Determination of appropriate instrument and control systems for trickling reactor plants
23 A.4.3 Determination of appropriate instrument and control systems for activated sludge plants

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BS EN 12255-12:2024
$142.49