DIN 50930 6 PDF
Buy DIN CORROSION OF METALS – CORROSION OF METALLIC MATERIALS UNDER CORROSION LOAD BY WATER. As the effect of metallic materials on the quality of drinking water is not covered by these standards, DIN has been introduced at the. DIN October Corrosion of metals – Corrosion of metallic materials under corrosion load by water inside of pipes, tanks and apparatus – Part 6.
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In systems containing hot-dip galvanized ferrous materials, a change in drinking water quality in terms of its suitability for human consumption is deemed acceptable if 5090 following concentrations in the galvanized coating are not exceeded values given as percentages by mass: Register online at inter and intra-company training, and certifying diplomas, seminars, distance learning.
Sampling of stagnant water shall take place at intervals of 1 to weeks after commissioning see DIN for details.
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These values vin to samples representative of the average water consumption over the period of a week. As there has not been enough experience with Cu-Ni alloys, limits cannot be specified and testing as in DIN is to be carried out.
Classification of low corrosivity of indoor atmospheres. If so, the water is to be assessed as specified therein.
Regulatory update of German Drinking Water Ordinance and Its Effect on Brass Materials
November Number of pages: In this case sampling is to be performed at intervals of 4 weeks and 12 weeks after commissioning. ISO general purpose metric screw threads – Tolerances – Part 1: Systems are to be assessed on the basis of data obtained when carrying out tests as in DIN on pipes of small nominal sizes, 509300 not only the time periods described in subclause 7.
The corrosion of metallic materials in water supply systems is the subject of the DIN EN series of European Standards at present at draft stage. In case of doubt, the German-language original should be consulted as the authoritative text. Table 3 gives values for B.
DIN (英文版)金属腐蚀管、槽及装置内水造成金属材料腐蚀 第6部 饮用水成分影响_图文_百度文库
A change in water quality due to interaction with a fin is considered as corrosion damage if the drinking water no longer meets legal requirements as a result.
Pressurized water reactors – Nuclear Islands – Glossary Date of publication: DIN series is not to be used to prepare food. If a material is to be used in applications other than those listed here, testing as in DIN is to be carried out if information on suitability based on equivalent investigations is not available. The effectiveness of any water treatment measures taken is to be determined as specified in DIN and DIN Inhibitors may be introduced into existing systems containing components made of copper or copper alloys, hot-dip galvanized ferrous materials and unalloyed or low-alloy ferrous materials under certain conditions.
Fittings combining other end connections with capillary or compression ends – German version EN If the water-related requirements of this standard are met, the specifications of the Verordnung zur Novellierung der Trinkwasserverordnung Regulation amending the German drinking water regulation ein to below as the Trinkwasserverordnung may be deemed to have been fulfilled.
Table 1 lists the relevant methods of analysis. Select the first category of products searched and follow the instructions.
Results which do not meet these criteria or which do not cover at least ddin the parameters listed in table 1 are not suitable and shall be discarded.
For this reason, water which remains stagnant e. Terms and Conditions Terms of subscription Online watch. In addition to water-related parameters, consumption behaviour is to be taken into consideration when assessing the suitability of a material for contact with drinking water.
This clause gives information on the suitability of various materials based on water-related parameters without making reference to specific test results. Changes to water quality may only be made using the additives listed in the Trinkwasserverordnung, and the limit values listed there are not to be exceeded.
An assessment of the extent to which a material or component affects water quality due to corrosion is only possible after the system has been operated for a certain length of time and adverse conditions are no longer present.
B values for various components and materials B Sanitary valves and pipe fittings including compression couplings of Cu-Sn-Zn alloys or Cu-Zn alloys, in systems of any material Adaptors and connectors of Cu-Sn-Zn alloys or Cu-Zn alloys in systems where other elements are made of the same material Pipe fittings, adaptors and connectors of Cu-Sn-Zn alloys or Cu-Zn alloys for use in service lines of plastics Pipe fittings, adaptors and connectors of Cu-Sn-Zn alloys or 66 alloys for use in systems e.
All water parameters which promote surface corrosion also affect the water quality.
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The results of the analysis are to be checked for plausibility. Checking the consistency of parameters used to determine calcite saturation e. If this is not the case, testing shall be carried out cf. When this happens, however, corrosion products in dissolved or solid form are released into the drinking water. Assessments are not to be based on single values obtained in water analyses, but on the change in the concentration of corrosion products in water over time, as a function of the length ddin time the water stagnates t and the sampling interval T.
The mean value represents the corrosion loading of the drinking water under the given test conditions, and is the basis for assessing the suitability of a material, component or water treatment method in terms of fulfilment of the requirements specified in the Trinkwasserverordnung.