Survey algorithm for cold and hot water supply systems of residential buildings
Introduction. Currently, there is a wide variety of methods for monitoring the condition of pipeline systems which require a different set of equipment. However, these methods are not applied for internal water supply systems due to restrictions on pipe diameters and complicated availability of comm...
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Moscow State University of Civil Engineering (MGSU)
2023-10-01
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| Online Access: | https://www.vestnikmgsu.ru/jour/article/view/88 |
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| author | N. A. Makisha V. A. Chukhin |
| author_facet | N. A. Makisha V. A. Chukhin |
| author_sort | N. A. Makisha |
| collection | DOAJ |
| description | Introduction. Currently, there is a wide variety of methods for monitoring the condition of pipeline systems which require a different set of equipment. However, these methods are not applied for internal water supply systems due to restrictions on pipe diameters and complicated availability of communicationsMaterials and methods. To assess the corrosion activity of water and determine the possibility of calcium carbonate release, various indices can be used: Langelier, Risner, Snow-Jackson, etc. When monitoring water supply systems with signs of corrosion using an electron microscope, it was found that the composition of the corrosive sediment contains a large amount of zinc, and, in some cases, copper. The essence of the proposed method is that a preliminary prepared steel indicator sample cut from an uncoated pipe was placed in a container under a stream of cold or hot water in the investigated water supply system made of galvanized steel pipes (including copper-containing fittings and heat exchangers), the sample was kept under the stream for 3–4 hours until the formation of surfaces of firmly attached corrosion products (sediment).Results. Fistulas were found on horizontal sections, on turns, in places where pipelines are welded. When laying pipes in parallel in a horizontal plane, it is necessary to bypass the pipes located next to the risers, which leads to the appearance of U-shaped or U-shaped contours of horizontally laid pipes. The most obvious reason for abnormally rapid corrosion in horizontally arranged pipelines with a U-shaped connection scheme of risers is the low speed of water movement. At low velocity of water flow in pipes with a change in the direction of water movement from horizontal to vertical and down, air will accumulate on the horizontal section of the main pipeline, while sediment will accumulate on the horizontal section going to the riser.Conclusions. The experience of the survey of water supply systems of buildings shows that, first of all, it is necessary to assess the impact of water quality on corrosion of pipelines according to stability indices, which in some cases can provide an answer to the possibility of abnormally rapid corrosion. |
| format | Article |
| id | doaj-art-df2f66397b36486699e18457d7e77014 |
| institution | Kabale University |
| issn | 1997-0935 2304-6600 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | Moscow State University of Civil Engineering (MGSU) |
| record_format | Article |
| series | Vestnik MGSU |
| spelling | doaj-art-df2f66397b36486699e18457d7e770142025-01-09T08:22:48ZengMoscow State University of Civil Engineering (MGSU)Vestnik MGSU1997-09352304-66002023-10-0118101617162610.22227/1997-0935.2023.10.1617-162636Survey algorithm for cold and hot water supply systems of residential buildingsN. A. Makisha0V. A. Chukhin1Moscow State University of Civil Engineering (National Research University) (MGSU)Moscow State University of Civil Engineering (National Research University) (MGSU)Introduction. Currently, there is a wide variety of methods for monitoring the condition of pipeline systems which require a different set of equipment. However, these methods are not applied for internal water supply systems due to restrictions on pipe diameters and complicated availability of communicationsMaterials and methods. To assess the corrosion activity of water and determine the possibility of calcium carbonate release, various indices can be used: Langelier, Risner, Snow-Jackson, etc. When monitoring water supply systems with signs of corrosion using an electron microscope, it was found that the composition of the corrosive sediment contains a large amount of zinc, and, in some cases, copper. The essence of the proposed method is that a preliminary prepared steel indicator sample cut from an uncoated pipe was placed in a container under a stream of cold or hot water in the investigated water supply system made of galvanized steel pipes (including copper-containing fittings and heat exchangers), the sample was kept under the stream for 3–4 hours until the formation of surfaces of firmly attached corrosion products (sediment).Results. Fistulas were found on horizontal sections, on turns, in places where pipelines are welded. When laying pipes in parallel in a horizontal plane, it is necessary to bypass the pipes located next to the risers, which leads to the appearance of U-shaped or U-shaped contours of horizontally laid pipes. The most obvious reason for abnormally rapid corrosion in horizontally arranged pipelines with a U-shaped connection scheme of risers is the low speed of water movement. At low velocity of water flow in pipes with a change in the direction of water movement from horizontal to vertical and down, air will accumulate on the horizontal section of the main pipeline, while sediment will accumulate on the horizontal section going to the riser.Conclusions. The experience of the survey of water supply systems of buildings shows that, first of all, it is necessary to assess the impact of water quality on corrosion of pipelines according to stability indices, which in some cases can provide an answer to the possibility of abnormally rapid corrosion.https://www.vestnikmgsu.ru/jour/article/view/88inspection of internal water supply systemsabnormally fast corrosiondrinking water qualitygalvanized pipescorrosion indicatorselectron microscopyenergy dispersive x-ray spectroscopy |
| spellingShingle | N. A. Makisha V. A. Chukhin Survey algorithm for cold and hot water supply systems of residential buildings Vestnik MGSU inspection of internal water supply systems abnormally fast corrosion drinking water quality galvanized pipes corrosion indicators electron microscopy energy dispersive x-ray spectroscopy |
| title | Survey algorithm for cold and hot water supply systems of residential buildings |
| title_full | Survey algorithm for cold and hot water supply systems of residential buildings |
| title_fullStr | Survey algorithm for cold and hot water supply systems of residential buildings |
| title_full_unstemmed | Survey algorithm for cold and hot water supply systems of residential buildings |
| title_short | Survey algorithm for cold and hot water supply systems of residential buildings |
| title_sort | survey algorithm for cold and hot water supply systems of residential buildings |
| topic | inspection of internal water supply systems abnormally fast corrosion drinking water quality galvanized pipes corrosion indicators electron microscopy energy dispersive x-ray spectroscopy |
| url | https://www.vestnikmgsu.ru/jour/article/view/88 |
| work_keys_str_mv | AT namakisha surveyalgorithmforcoldandhotwatersupplysystemsofresidentialbuildings AT vachukhin surveyalgorithmforcoldandhotwatersupplysystemsofresidentialbuildings |