Electrochemical techniques for legionella prevention (BRL-K14010 part 2)
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The assessment directive focuses on electrochemical techniques that have been granted an authorization by the Ctgb (Board for the Authorization of Plant Protection Products and Biocides) and that are applied in collective drinking water and domestic hot water installations for ’'in line’' disinfection. The equipment belonging to the electrochemical technique can be introduced either in the main supply line of the entire installation or in a part of it. This concerns the following techniques: copper/silver ionization and anodic oxidation.
This BRL is important for, among others, owners of collective tap water installations. The Kiwa Water Mark may be carried by certificate holders for and on products that come into contact with drinking water and meet all requirements from the relevant Kiwa assessment directives. These assessment directives contain all the requirements set by the market and the government for products that come into contact with drinking water: both the private, functional requirements and the public, hygienic requirements.
The Kiwa Water Mark is therefore the most efficient tool for selling and using these products on the Dutch market: producers and suppliers only have to deal with one set of requirements and the user is completely unburdened and does not have to look any further.
The process steps
Steps to obtain a certificate with the Kiwa Water Mark are:
The most important parts of the admission investigation (step 4) are:
a. Product testing
By means of an investigation, often carried out in our own laboratory, it is determined whether the product meets the requirements stated in the assessment directive. The product testing relates to functional and health aspects, such as durability, dimensions and material composition.
b. Assessment of production process, quality system and IKB (Internal Quality Control) scheme
The assessment is aimed at determining whether the supplier is capable of continuously delivering a product that meets the set requirements. During this assessment, aspects of the process that influence the quality of the product are addressed, including incoming inspection, process control and final inspection.
The periodic audits (step 7) are intended for the maintenance of the certificate and certification scheme. The production process is thereby inspected to maintain a justified confidence that the products delivered under the certificate continue to meet the requirements stated in the assessment directive. Part of these periodic audits are functional and health tests of the certified products. The frequency of the audits varies from product group to product group: generally from 1 to 4 times a year. The conditions of the certification process are laid down in the regulations for certification and the general terms and conditions of Kiwa for the execution of assignments.
Alternative methods for legionella prevention (BRL-K14010 part 1a and 1b)
There are various techniques to prevent or reduce the growth of legionella bacteria in tap water installations. Under certain conditions, physical techniques may be used for this purpose. In consultation with the government and the market, Kiwa has developed the assessment directive (Dutch: beoordelingsrichtlijn (BRL)) ’Legionella prevention with alternative techniques, BRL-K14010 part 1a and 1b: Physical techniques’.
Chemical techniques for legionella prevention (BRL-K14010 part 3)
There are various techniques to prevent or reduce the growth of legionella bacteria in tap water installations. Under certain conditions, electrochemical techniques may be used for this purpose. In consultation with the government and the market, Kiwa has developed the assessment directive (Dutch: beoordelingsrichtlijn (BRL)) ’Legionella prevention with alternative techniques, part 3: Chemical techniques’ (BRL-K14010 part 3).
