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PD CEN/TS 16637-1:2014

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Construction products. Assessment of release of dangerous substances Guidance for the determination of leaching tests and additional testing steps
Available format(s)

Hardcopy , PDF

Superseded date

25-10-2018

Language(s)

English

Published date

31-08-2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Determination of the appropriate release
  test method
6 Adoption of modules for the product specific
  leaching standard
7 Indirect methods
Annex A (informative) - Release scenarios and
        impact assessment
Annex B (informative) - Different types of leaching tests
Annex C (informative) - Key concepts for product
        sampling
Annex D (informative) - Example of a chain of
        custody report
Annex E (informative) - Example of a sampling report
Bibliography

Defines the identification of the appropriate leaching test method for the determination of the release of Regulated Dangerous Substances from construction products into soil, surface water and groundwater.

(1) This Technical Specification allows the identification of the appropriate leaching test method for the determination of the release of Regulated Dangerous Substances from construction products into soil, surface water and groundwater. This document provides a stepwise procedure for the determination of appropriate release tests, including: guidance for the identification of construction products potentially emitting Regulated Dangerous Substances; determination of the test method based on general product properties; choice of the test method using specific product properties. (2) Furthermore, this Technical Specification gives general guidance for CEN Technical Product Committees on basic aspects (sampling, sample preparation and storage, eluate treatment, analysis of eluates and documentation) to be specified in the relevant product standards. (3) Metallic products, coatings on metallic products and organic coatings for metals are not considered in the determination scheme of this Technical Specification since the test method in CEN/TS16637‑2 (tank test) is not appropriate for the testing of these construction products due to a different release mechanism (solubility control). NOTE Metallic products are excluded from the scope of CEN/TS16637‑2 because the principles of that test (diffusion) are not obeyed by these products. Metallic products have shown pH dependent solubility control, which means that metals released from the oxidation layer on the metal until the maximum possible solubility level at the prevailing pH conditions in the surrounding water is reached (more water in contact with the same metal surface means more metals released and more time does not lead to more release due to solubility control). Maximum level of release can often be reached in minutes to hours. More generally, it can be stated that expression of results for metallic surfaces in mg/(m2·s) is always “ conditional??, i.e. dependent on the local conditions at which the measurements were done, such as the volume of water relative to the surface area. For impact assessment, it is necessary to understand the above mentioned effects and to capture these effects in a test reflecting the dominant release mechanism. However, such a test method is currently unavailable. If the intrinsic leaching behaviour is known, release under specified local conditions could be determined by modelling. Furthermore, no notified regulations exist for metallic products at the time these Technical Specifications have been published. (4) It is assumed that intermittent contact with water (e.g. exposure to rainwater) is tested - by convention - as permanent contact. For some coatings, (e.g. some renders with organic binders according to EN15824 ) in intermittent contact to water, physical and chemical properties might be altered in permanent contact with water. These products are not considered in the determination scheme of this Technical Specification since the test method in CEN/TS16637‑2 is not appropriate for the testing of these construction products.

Committee
B/557
DocumentType
Standard
Pages
52
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
CEN/TS 16637-1:2014 Identical

EN 12457-2:2002 Characterisation of waste - Leaching - Compliance test for leaching of granular waste materials and sludges - Part 2: One stage batch test at a liquid to solid ratio of 10 l/kg for materials with particle size below 4 mm (without or with size reduction)
ISO 11074:2015 Soil quality — Vocabulary
CEN/TS 16637-2:2014 Construction products - Assessment of release of dangerous substances - Part 2: Horizontal dynamic surface leaching test
CEN/TR 16098:2010 Construction products: Assessment of release of dangerous substances - Concept of horizontal testing procedures in support of requirements under the CPD
CEN/TR 15858:2009 Construction products - Assessment of the release of regulated dangerous substances from construction products based on the WT, WFT/FT procedures
EN 12457-4:2002 Characterisation of waste - Leaching - Compliance test for leaching of granular waste materials and sludges - Part 4: One stage batch test at a liquid to solid ratio of 10 l/kg for materials with particle size below 10 mm (without or with size reduction)
CEN/TR 16220:2011 Construction products - Assessment of release of dangerous substances - Complement to sampling
CEN/TR 16496:2013 Construction Products - Assessment of release of dangerous substances - Use of harmonised horizontal assessment methods
EN 12457-1:2002 Characterisation of waste - Leaching - Compliance test for leaching of granular waste materials and sludges - Part 1: One stage batch test at a liquid to solid ratio of 2 l/kg for materials with high solid content and with particle size below 4 mm (without or with size reduction)
NEN 7348 : 2006 LEACHING CHARACTERISTICS - DETERMINATION OF THE REDUCING CHARACTER AND THE REDUCING CAPACITY - SOLID EARTHY AND STONEY MATERIALS
EN 12457-3:2002 Characterisation of waste - Leaching - Compliance test for leaching of granular waste materials and sludges - Part 3: Two stage batch test at a liquid to solid ratio of 2 l/kg and 8 l/kg for materials with high solid content and with particle size below 4 mm (without or with size reduction)
CEN/TR 16045:2010 Construction Products - Assessment of release of dangerous substances - Content of regulated dangerous substances - Selection of analytical methods

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