BS EN 12255-1:2002 – Wastewater treatment plants — Part 1: General construction principles
1 Scope
This European Standard specifies general requirements for structures and equipment as they relate to wastewater treatment plants for a total population of more than 50 PT.
The primary application is designed for wastewater treatment plants for the treatment of domestic and municipal wastewater.
Requirements for structures which are not specific for wastewater treatment plants are not within the scope of this European Standard. Other ENs can apply.
Equipment which is not solely used in wastewater treatment plants is subject to the applicable product standards.
However, specific requirements for such equipment when used in wastewater treatment plants are included in this part.
General principles of building construction, mechanical and electrical engineering are not subject of this standard.
This European Standard does not cover the design of treatment processes.
Differences in wastewater treatment throughout Europe have led to a variety of systems being developed. This standard gives fundamental information about the systems; this standard has not attempted to specify all available systems.
Detailed information additional to that contained in this standard may be obtained by referring to the Bibliography.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
EN 752-6, Drain and sewer systems outside buildings – Part 6: Pumping installations.
EN 809, Pumps and pump units for liquids – Common safety requirements.
EN 1085, Wastewater treatment – Vocabulary.
EN 12255-9, Wastewater treatment plants — Part 9: Odour control and ventilation.
EN 12255-10, Wastewater treatment plants – Part 10: Safety principles.
prEN 12255-12, Wastewater treatment plants — Part 12: Control and automation.
EN 60034-1, Rotating electrical machines – Part 1: Rating and performance (IEC 60034-1:1996, modified).
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529: 1989).
ISO 3506-1, Mechanical properties of corrosion-resistant stainless-steel fasteners – Part 1: Bolts, screws and studs.
ISO 3506-2, Mechanical properties of corrosion-resistant stainless-steel fasteners – Part 2: Nuts.
ISO 3506-3, Mechanical properties of corrosion-resistant stainless-steel fasteners – Part 3: Set screws and similar fasteners not under tensile stress.
ISO 4200, Plain end steel tubes, welded and seamless – General tables of dimensions and masses per unit length.
BS EN 12255-1:2002 – Wastewater treatment plants — Part 1: General construction principles