Separator systems for light liquids (e.g. oil and petrol) - Part 1: Principles of product design, performance and testing, marking and quality control

This standard deals with installations for the separation of light liquides (e.g. oil and petrol), i.e. those with a density up to 0.95 g/cm3 from waste water by means of gravity and/or coalescence. The standard is not primarily intended to apply to installations that are required to treat large quantities of trade effluent (e.g., oil refinery effluent). The standard may, however, still be appropriate for this purpose depending on local requirements.

Abscheideranlagen für Leichtflüssigkeiten (z.B. Öl und Benzin) -Teil 1: Bau-, Funktions- und Prüfgrundsätze, Kennzeichnung und Güteüberwachung

Diese Norm legt Begriffe, Nenngrößen, Baugrundsätze, Funktionsanforderungen, Kennzeichnung, Prü-fungen
und Güteüberwachung für Abscheideranlagen für Leichtflüssigkeiten fest.
Diese Norm gilt für Abscheideranlagen für Leichtflüssigkeiten, die die Trennung von Leichtflüssigkeiten
vom Abwasser aufgrund der Schwerkraft und/oder Koaleszenz bewirken.
Diese Norm gilt nicht für die Behandlung von stabilen Emulsionen, Lösungen von Leichtflüssigkeiten in
Wasser, Fetten und Ölen pflanzlichen und tierischen Ursprungs.

Installations de séparation de liquides légers (par exemple hydrocarbures) - Partie 1: Principes pour la conception, les performances et les essais, le marquage et la maîtrise de la qualité

La présente norme spécifie les définitions, les tailles nominales, les principes de conception et les exigences de performance, ainsi que le marquage, les essais et la maîtrise de la qualité des installations de séparation des liquides légers.
La présente Norme européenne est applicable aux installations de séparation des liquides légers lorsque ces derniers sont séparés des eaux usées par gravité et/ou coalescence.
Cette norme européenne ne s'applique pas au traitement des émulsions stables, des solutions de liquides légers et d'eau, de graisses et d'huiles d'origines végétale et animale.

Ločevalni sistemi za lahke tekočine (olje in gorivo) - 1. del: Načela načrtovanja proizvoda, značilnosti in preskušanje, označevanje in kontrola kakovosti

General Information

Status
Published
Publication Date
22-Jan-2002
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
16-Nov-2006

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SLOVENSKI STANDARD
SIST EN 858-1:2002
01-december-2002

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SURL]YRGD]QDþLOQRVWLLQSUHVNXãDQMHR]QDþHYDQMHLQNRQWURODNDNRYRVWL

Separator systems for light liquids (e.g. oil and petrol) - Part 1: Principles of product

design, performance and testing, marking and quality control
Abscheideranlagen für Leichtflüssigkeiten (z.B. Öl und Benzin) -Teil
1: Bau-, Funktions- und Prüfgrundsätze, Kennzeichnung
und Güteüberwachung

Installations de séparation de liquides légers (par exemple hydrocarbures) - Partie 1:

Principes pour la conception, les performances et les essais, le marquage et la maîtrise

de la qualité
Ta slovenski standard je istoveten z: EN 858-1:2002
ICS:
13.060.99
SIST EN 858-1:2002 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 858-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2002
ICS 13.060.99
English version
Separator systems for light liquids (e.g. oil and petrol) - Part 1:
Principles of product design, performance and testing, marking
and quality control

Installations de séparation de liquides légers (par exemple Abscheideranlagen für Leichtflüssigkeiten (z.B - Öl und

hydrocarbures) - Partie 1: Principes pour la conception, les Benzin) - Teil 1: Bau-, Funktions- und Prüfgrundsätze,

performances et les essais, le marquage et la maîtrise de Kennzeichnung und Güteüberwachung

la qualité
This European Standard was approved by CEN on 8 March 2001.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,

Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 858-1:2002 E

worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
EN 858-1:2002 (E)
Contents
page

Foreword......................................................................................................................................................................4

1 Scope ..............................................................................................................................................................4

2 Normative references ....................................................................................................................................4

3 Terms and definitions....................................................................................................................................6

4 Classes of separators....................................................................................................................................8

5 Nominal sizes .................................................................................................................................................8

6 Requirements .................................................................................................................................................8

6.1 General............................................................................................................................................................8

6.2 Materials..........................................................................................................................................................8

6.2.1 General............................................................................................................................................................8

6.2.2 Concrete..........................................................................................................................................................8

6.2.3 Metallic materials ...........................................................................................................................................8

6.2.4 Plastic materials.............................................................................................................................................9

6.2.5 Sealing materials .........................................................................................................................................10

6.2.6 Coatings/linings ...........................................................................................................................................10

6.2.7 Chemical resistance ....................................................................................................................................11

6.3 Design requirements ...................................................................................................................................12

6.3.1 Area of the separator or sludge trap..........................................................................................................12

6.3.2 Watertightness of components ..................................................................................................................12

6.3.3 Accessibility .................................................................................................................................................12

6.3.4 Water seals ...................................................................................................................................................12

6.3.5 Pipes and pipe joints ...................................................................................................................................12

6.3.6 Internal components....................................................................................................................................13

6.3.7 Sludge traps .................................................................................................................................................13

6.3.8 Access covers..............................................................................................................................................13

6.4 Structural stability .......................................................................................................................................13

6.4.1 General..........................................................................................................................................................13

6.4.2 Separator systems made of unreinforced concrete, fibre-reinforced concrete, reinforced

concrete ........................................................................................................................................................13

6.4.3 Separator systems made of glass fibre-reinforced plastics ...................................................................14

6.5 Functional requirements .............................................................................................................................14

6.5.1 General..........................................................................................................................................................14

6.5.2 Storage capacity for light liquids ...............................................................................................................14

6.5.3 Automatic closure devices .........................................................................................................................14

6.5.4 Automatic warning devices and additional devices.................................................................................14

6.5.5 Separators with a bypass device ...............................................................................................................14

6.5.6 Determination of the nominal size and class............................................................................................15

6.6 Marking .........................................................................................................................................................16

6.6.1 Separator systems.......................................................................................................................................16

6.6.2 Automatic closure devices, automatic warning devices .........................................................................16

7 Manufacturer's product information ..........................................................................................................16

8 Test methods................................................................................................................................................16

8.1 Materials........................................................................................................................................................16

8.1.1 Concrete........................................................................................................................................................16

8.1.2 Plastics materials.........................................................................................................................................17

8.1.3 Coatings........................................................................................................................................................17

8.1.4 Chemical resistance of internal surfaces..................................................................................................18

8.1.5 Chemical resistance of external coatings.................................................................................................19

8.2 Watertighness of system components......................................................................................................19

8.3 Functional requirements .............................................................................................................................22

---------------------- Page: 3 ----------------------
EN 858-1:2002 (E)

8.3.1 Storage capacity for light liquid.................................................................................................................22

8.3.2 Automatic closure device ...........................................................................................................................22

8.3.3 Determination of the nominal size and class............................................................................................24

9 Type testing of factory made separator systems.....................................................................................31

9.1 General..........................................................................................................................................................31

9.2 Prototypes and documentation..................................................................................................................31

10 Quality control..............................................................................................................................................33

10.1 General..........................................................................................................................................................33

10.2 Factory production control.........................................................................................................................33

Annex A (normative) Analysis of effluent samples ...............................................................................................35

A.1 General..........................................................................................................................................................35

A.2 Extraction and preparation of the extract .................................................................................................35

A.3 Evaluation.....................................................................................................................................................35

Annex B (normative) Factory production control..................................................................................................37

Annex C (informative) Established methods of calculation and testing .............................................................43

C.1 Germany .......................................................................................................................................................43

C.2 The Netherlands...........................................................................................................................................43

C.3 France ...........................................................................................................................................................43

Annex D (informative) Control by third party (third party control).......................................................................44

D.1 General..........................................................................................................................................................44

D.2 Procedure of the third party control ..........................................................................................................44

D.2.1 Factories certified to EN ISO 9001 .............................................................................................................44

D.2.2 Factories not certified to EN ISO 9001.......................................................................................................44

D.3 Report by the third party.............................................................................................................................45

D.4 Non-conforming products ..........................................................................................................................45

Annex E (informative) A–Deviation..........................................................................................................................46

Bibliography..............................................................................................................................................................48

---------------------- Page: 4 ----------------------
EN 858-1:2002 (E)
Foreword

This European Standard has been prepared by Technical Committee CEN /TC 165, "Wastewater engineering", the

secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or

by endorsement, at the latest by July 2002, and conflicting national standards shall be withdrawn at the latest by

December 2002.

This is the first part of the two part standard for separator systems for light liquids. Part 2 of this standard contains

the necessary statements on selection of nominal size, installation, operation and maintenance of separator

systems for light liquids.
Annexes A and B are normative. The annexes C, D and E are informative.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland,

France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,

Sweden, Switzerland and the United Kingdom.
1 Scope

This standard specifies definitions, nominal sizes, principles of design, performance requirements, marking, testing

and quality control for separator systems for light liquids.

This standard applies to separator systems for light liquids, where light liquids are separated from waste water by

means of gravity and/or coalescence.

This standard does not apply to the treatment of stable emulsions, solutions of light liquids and water, grease and

oils of vegetable and animal origin.
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).

ISO 48, Rubber, vulcanized or thermoplastic – Determination of hardness (hardness between 10 IRHD and

100 IRHD).
ISO 178, Plastics – Determination of flexural properties.
ISO 180, Plastics – Determination of Izod impact strength.
ISO 185, Grey cast iron – Classification.

ISO 527-2, Plastics – Determination of tensile properties – Part 2: Test conditions for moulding and extrusion

plastics.
---------------------- Page: 5 ----------------------
EN 858-1:2002 (E)
ISO 630, Structural steels – Plates, wide flats, bars, sections and profiles.

ISO 877:1994; Plastics – Methods of exposure to direct weathering, to weathering using glass-filtered daylight, and

to intensified weathering by daylight using Fresnel mirrors.
ISO 1083, Spheroidal graphite cast iron – Classification.

ISO 1133, Plastics – Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of

thermoplastics.

ISO 1183, Plastics – Methods for determining the density and relative density of non-cellular plastics.

ISO 1518, Paints and varnishes – Scratch test.
ISO 1817, Rubber, vulcanized – Determination of the effect of liquids.

ISO 1920, Concrete tests – Dimensions, tolerances and applicability of test specimens.

ISO 2409, Paints and varnishes – Cross-cut test.

ISO 2736-1, Concrete tests – Test specimens – Part 1: Sampling of fresh concrete.

ISO 2736-2, Concrete tests – Test specimens – Part 2: Making and curing of test specimens for strength tests.

ISO 2808, Paints and varnishes – Determination of film thickness.

ISO 2812-1, Paints and varnishes – Determination of resistance to liquids – Part 1: General methods.

ISO 2812-2, Paints and varnishes, determination of resistance to liquids, Part 2 : water immersion method.

ISO 2815, Paints and varnishes – Buchholz indentation test.
ISO 3755, Cast carbon steels for general engineering purposes.
ISO 4012, Concrete – Determination of compressive strength of test specimens.
ISO 4624, Paints and varnishes – Pull-off test for adhesion.

ISO 4628-2, Paints and varnishes – Evaluation of degradation of paint coatings – Designation of intensity, quantity

and size of common types of defects – Part 2: Designation of degree of blistering.

ISO 4628-3, Paints and varnishes – Evaluation of degradation of paint coatings – Designation of intensity, quantity

and size of common types of defects – Part 3: Designation of degree of rusting.
ISO 6272, Paints and varnishes – Falling-weight test.

ISO 7253, Paints and varnishes – Determination of resistance to neutral salt spray (fog).

ISO 8217, Petroleum products – Fuels (class F) – Specifications of marine fuels.

ISO 8501-1, Preparation of steel substrates before application of paints and related products – Visual assessment

of surface cleanliness – Part 1: Rust grade and preparation grades of uncoated steel substrates and of steel

substrates after overall removal of previous coatings.
EN 60, Glass reinforced plastics – Determination of the loss of ignation.
EN 61, Glass reinforced plastics – Determination of tensible properties.

EN 62, Glass reinforced plastics – Standard atmospheres for conditioning and testing.

EN 63, Glass reinforced plastics– Determination of flexural properties – Three point method.

---------------------- Page: 6 ----------------------
EN 858-1:2002 (E)

EN 124:1994, Gully tops and manhole tops for vehicular and pedestrian areas – Design requirements, type testing,

marking, quality control.
EN 228, Automotive fuels – Unleaded petrol – Requirements and test methods.

EN 288-1, Specification and approval of welding procedures for metallic materials – Part 1: General rules for fusion

welding.

EN 288-2, Specification and approval of welding procedures for metallic materials – Part 2: Welding procedure

specification for arc welding.

EN 288-3, Specification and approval of welding procedures for metallic materials – Part 3: Welding procedure

tests for the arc welding of steels.

EN 476, General requirements for components used in discharge pipes, drains and sewers for gravity systems.

EN 681-1, Elastomeric seals – Materials requirements for pipe joint seals used in water and drainage applications –

Part 1: Vulcanized rubber.

EN 976-1:1997, Underground tanks of glass-reinforced plastics (GRP) – Horizontal cylindrical tanks for the non-

pressure storage of liquid petroleum based fuels – Part 1: Requirements and test methods for single wall tanks.

EN 978, Underground tanks of glass-reinforced plastics (GRP) – 
 
  


ENV 10080, Steel for the reinforcement of concrete – Weldable ribbed reinforcing steel B 500 – Technical delivery

conditions for bars, coils and welded fabric.
EN 10088-1, Stainless steels – Part 1: List of stainless steels.

EN 10088-2, Stainless steels – Part 2: Technical delivery conditions for sheet/plate and strip for general purposes.

EN 10088-3, Stainless steels – Part 3: Technical delivery conditions for semi-finished products, bars, rods and

sections for general purposes.
EN ISO 1514, Paints and varnishes – Standard panels for testing (ISO 1514:1993).
3 Terms and definitions

For the purposes of this European Standard, the following terms and definitions apply.

3.1
light liquid

liquid with a density no greater than 0,95 g/cm , which is actually or practically insoluble and unsaponifiable

3.2
separator system

arrangement comprising a separator (class I, class II), a sludge trap and a sampling point

3.3
sludge trap

part of the separator system where material settles, i. e. sludge, silt and grit, and which can be a separate unit or

constructed with the separator as a combined unit
3.4
separator (class I, class II)

part of the separator system, which separates light liquid from waste water and retains the light liquid

3.5
sampling point

part of the separator system situated downstream of the separation process where samples can be taken of the

waste water discharged from the separator
---------------------- Page: 7 ----------------------
EN 858-1:2002 (E)
3.6
extension shaft

component used to extend an opening in the separator system to finished level for inspection and maintenance

purposes
3.7
nominal size (NS)

number, without units, approximately equivalent to the maximum effluent flow in litres per second from the

separator when tested in accordance with 8.3.3
3.8
separating zone
zone, in which light liquid is separated from waste water in the separator
3.9
storage capacity for light liquids

volume of separated light liquid, which can be held in the separator without the stored light liquid entering the inlet

or outlet of the separator
3.10
automatic closure device

mechanism, operated by the accumulated light liquid, which prevents discharge of the light liquid from the

separator
3.11
maximum operational liquid level

highest level of liquid at the flow, corresponding to the nominal size and after reaching the storage capacity for light

liquids
3.12
automatic warning device

device to warn of excessive depth of light liquid or waste water or low level condition

3.13
bypass separator

separator with a device, which allows a flow in excess of the maximum permissible effluent flow to bypass the

separator
3.14
coating/lining
a protective layer on a separator component
---------------------- Page: 8 ----------------------
EN 858-1:2002 (E)
4 Classes of separators
There are two classes of separators as shown in table 1.
Table 1 — Classes of separators
Class Maximum permissible content of Typical separating technique (for example)
residual oil
mg/l
I 5,0 Coalescing separators
II 100 Gravity separators

When tested in accordance with 8.3.3.1 and samples being analysed for their hydrocarbon

content using infrared spectroscopy in accordance with A.2 and A.3.
5 Nominal sizes

The preferred nominal sizes of separator systems for light liquids are: 1,5, 3, 6, 10, 15, 20, 30, 40, 50, 65, 80, 100,

125, 150, 200, 300, 400 and 500.
6 Requirements
6.1 General

Separator systems for light liquids and their separate components shall be in accordance with the material

requirements specified in 6.2. Where required, regulations with regard to environment and "safety in case of fire"

shall be considered.
6.2 Materials
6.2.1 General
Separator systems may be constructed from:
 unreinforced concrete, fibre-reinforced concrete, reinforced concrete;
 metallic materials: cast iron, stainless steel, steel;
 plastics materials: glass fibre reinforced plastics, polyethylene.

Any other materials used in the construction of a separator system shall meet all the requirements of this standard

and may need additional requirements.
6.2.2 Concrete

The minimum compressive strength of concrete at 28 days shall be 45 N/mm when tested on a cube of 150 mm,

or 35 N/mm when tested on a cylinder 150 mm diameter x 300 mm high.
6.2.3 Metallic materials

a) The production, quality and testing of the metallic materials listed below shall be in accordance with the

following standards:
---------------------- Page: 9 ----------------------
EN 858-1:2002 (E)
Flake graphite cast iron ISO 185 Reinforcing steel ENV 10080
Spheroidal graphite cast iron ISO 1083
Cast steel ISO 3755
Rolled steel ISO 630 Stainless steel EN 10088-1
EN 10088-2
EN 10088-3
b) Additional requirements for metallic materials
Stainless steel

For good general corrosion resistance and stability against intercrystalline corrosion effects of the various

steels listed in the EN 10088-1, EN 10088-2 and EN 10088-3, only austenitic steels minimum quality

X6 CrNi 1810 shall be used.
Welding of steel
The requirements given in EN 288-1, EN 288-2 and EN 288-3 shall apply
6.2.4 Plastic materials
a) Glass fibre reinforced plastics

The laminate shall be constructed using resins, reinforcement materials, processing agents and other materials in

accordance with EN 976-1:1997, clause 3.
b) Polyethylene
1) The requirements for moulding and fabricating polyethylene are as follows:
Polyethylene for rotational moulding:

 Density shall not be less than 935 kg/m when measured in accordance with ISO 1183.

 Melt mass-flow rate, under a nominal load of 21,6 N and at a temperature of 190 C, shall be between 1,0 g/10

min and 5,0 g/10 min, measured in accordance with ISO 1133.
Polyethylene for blow moulding:

 Density shall not be less than 945 kg/m when measured in accordance with ISO 1183.

 Melt mass-flow rate, under a nominal load of 50 N and at a temperature of 190 C, shall be between 0,3 g/10

min and 1,0 g/10 min, measured in accordance with ISO 1133.
Polyethylene for injection moulding:

 Density shall not be less than 945 kg/m when measured in accordance with ISO 1183.

 Melt mass-flow rate, under a nominal load of 50 N and at a temperature of 190 C, shall be between 0,3 g/10

min and 1,0 g/10 min, measured in accordance with ISO 1133.
Polyethylene for buttweld-sheet assembly:

 Density shall not be less than 950 kg/m when measured in accordance with ISO 1183.

---------------------- Page: 10 ----------------------
EN 858-1:2002 (E)

 Melt mass-flow rate, under a nominal load of 50 N and at a temperature of 190 C, shall be between 0,3 g/10

min and 1,0 g/10 min, measured in accordance with ISO 1133.
2) Additional requirements
Tensile strength:

 The tensile properties, when determined in accordance with ISO 527-2 (using a testing speed of 100 mm/min)

shall be as follows:
Polyethylene for rotational moulding:
 Tensile stress at yield shall be greater than 15 MPa.
 Tensile strain at yield shall be less than 25 %.
 Tensile strain at break shall be greater than 200 %.
Polyethylene for blow moulding, injection moulding and buttweld-sheet assembly:
 Tensile stress at yield shall be greater than 21 MPa.
 Tensile strain at yield shall be less than 25 %.
 Tensile strain at break shall be greater than 200 %.
U.V. stability:

 When exposed to U. V. radiation of 3,5 GJ/ (m . a) in accordance withISO 877:1994, annex C, the mechanical

properties shall not decrease more than 50 %.
6.2.5 Sealing materials

For separator systems, only elastomers (rubber) or permanent elastic sealing materials shall be used. Cement

mortar and similar sealing cements or compounds shall not be used.

Rubber seals shall comply with the requirements of EN 681-1, type WC, and their hardness for joints shall not be

less than 40 IRHD in accordance with ISO 48.
6.2.6 Coatings/linings
6.2.6.1 General

If there are coating/lining applied to the surfaces of the separator system for protection against the effects of the

influent (for internal surfaces), and ground conditions (for external surfaces), they shall be in accordance with the

following requirements.
6.2.6.2 Technical documentation
The supplier of the coating materials shall prov
...

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