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- Survey of asbestos-containing spraying materials at school facilities (final report) (FY2005)
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Survey of asbestos-containing spraying materials at school facilities (final report) (FY2005)
Last Updated September 15, 2020
１． Overview of the survey
During the summer vacation, we conducted a fact-finding survey to investigate the use of spraying materials containing asbestos at municipal school facilities. In the survey, the deterioration status of spraying materials and felt materials was checked, and samples were taken and analyzed. As a result of the analysis, if the use of asbestos was found, a scattering volume survey was conducted to check the asbestos scattering status in the air. (Felt material: Asbestos heat insulating material on folding boards)
| ・Survey | In the survey, we conducted a visual survey of the buildings of each school. We investigated the deterioration of spraying materials, etc., which may contain asbestos, and conducted sampling. The collected samples were analyzed by the Institute for Environmental Science, and the type and content of asbestos were confirmed. |
|---|---|
| ・Scatter volume survey | If the analysis found that asbestos content was contained, we investigated whether asbestos was scattered in the air in the sampled space. The survey prioritized space in classrooms and corridors used by elementary school studenｔ students on a daily basis. |
２． Survey status
| Schools surveyed | Spraying materials, etc. No use | Spraying materials, etc. Used | ||
|---|---|---|---|---|
| Status of asbestos content | ||||
| 520 schools | 324 schools | 196 schools | No | Yes |
| 173 schools | 23 schools | |||
・As a result of a fact-finding survey on the use of spraying materials that may contain asbestos, 324 schools have been confirmed to be "no use" and 196 schools have been confirmed to be "useful".
・As a result of collecting and analyzing samples of 196 schools that have been confirmed to be "useful", 23 schools have found asbestos content.
・The survey results are as per the attached sheet "Usage situation such as municipal school sprayed asbestos and the correspondence situation".
３． Future Responses
For schools where asbestos is found to be used, we will take necessary measures, giving priority to places where elementary school studenｔ students and others use daily. In that case, school closures will be considered depending on the work situation. In addition, the results of the survey and the status of response will be announced on our website.
Usage status and response status of municipal school sprayed asbestos as of September 21, 2005
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Sugeta Junior High School | First Library (behind the ceiling) | 55 | Crysotile (white) | Less than 1% | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Minato Junior High School | Second Disaster Prevention Warehouse | 57 | Crysotile (white) | 5% or more | Less than 0.11 bottles/L | Sequential response | |
| A Staircase | 57 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | ||
| Spiral staircase | 57 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | ||
| Staff entrance | 57 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | ||
| Yokohama Sogo High School | Gymnasium (felt material) | 39 | Crysotile (white) | Approx. 100% | Less than 0.11 bottles/L | Sequential response | |
| Substation room | 47 | Crysotile (white) | 90% or more | Less than 0.11 bottles/L | Sequential response | ||
| Minato Sogo High School | Disaster Prevention Monitoring Office | 55 | Crysotile (white) | Less than 1% | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status ※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Aibuyama Elementary School | Corridor Piping | 51 | Amocyte (tea) | 5～10％ | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status ※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Kawashima Elementary School | Crossing corridor (behind the ceiling) | 54 | Crysotile (white) | 1～5 ％ | 3rd floor 0.29 bottles/L 4th floor less than 0.11 bottles/L | Sequential response | |
| Sakamoto Elementary School | school lunch Room Hall (behind the ceiling) | 47 | Crysotile (white) | Less than 1% | Less than 0.11 bottles/L | Sequential response | |
| Setogaya Elementary School | The ceiling of the music room | 50 | Clocidolite (blue) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | |
| Kami Sugeta School for the Disabled | Gymnasium (felt material) | 56 | Crysotile (white) | Approx. 100% | 0.3 bottles/L | Sequential response | |
| Slope wall | 49 | Clocidolite (blue) | 1～5 ％ | 1.2 bottles/L | Wall protection | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Oike Elementary School | Printing room (behind the ceiling) | 57 | Crysotile (white) | Less than 1% | 0.12 bottles/L | Sequential response | |
| Nakao Elementary School | Staircase | 53 | Crysotile (white) | 50% or more | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Bairin Elementary School | Janitor room piping | 49 | Amocyte (tea) Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | |
| Yokodai-Daiichi Junior High School☆ | Piping in the ceiling of the technical staff room | 46 | Crysotile (white) | Approx. 100% | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status ※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Namiki Daiichi Elementary School | Classrooms, corridors, etc. | 53, 56, 59 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | |
| Tomiokahigashi Junior High School | Corridors, etc. | 54, 55 | Crysotile (white) | 5～10％ | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Midori Elementary School | Stair landing | 55 | Amocyte (tea) | 50% or more | 0.7 bottles/L | Enclosure work 8/31 Implementation |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Utsukushigaoka Junior High School | Classroom beams (behind the ceiling) | 47 | Amocyte (tea) | 50% or more | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Higashi Gumizawa Elementary School | Ceiling on the top floor of stairs | 50 | Crysotile (white) | 50% or more | 0.7 bottles/L | Enclosure work 9/9 to 9/10 | |
| Substation room | 50 | Crysotile (white) | 50% or more | 0.11 bottles/L | Sequential response | ||
| Higashitotsuka Elementary School☆ | Piping in the ceiling of the technical staff room | 48 | Crysotile (white) | Approx. 100% | 0.53 bottles/L | Sequential response | |
| Hirato Junior High School | Elevator room | 11 | Crysotile (white) | Less than 1% | Less than 0.11 bottles/L | Sequential response |
| School name | Location of use | Year of construction | Type | Content | Shatter status※ | Current situation | Future Responses |
|---|---|---|---|---|---|---|---|
| Kami Seya Elementary School | Warehouse | 49 | Amocyte (tea) | Approx. 100% | 0.12 bottles/L | Sequential response | |
| Futatsu Bridge Elementary School☆ | Men's Toilet PS Internal Piping | 38 | Crysotile (white) | Less than 1% | Less than 0.11 bottles/L | Sequential response | |
| Futatsu Bridge School for the Disabled☆ | Work room | 56 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response | |
| Staff room | 56 | Crysotile (white) | 1～5 ％ | Less than 0.11 bottles/L | Sequential response |
| ※ | ・Air Pollution Control Law Site Boundary Concentration Standard 10 pcs/L ・Survey on the concentration of asbestos in the atmosphere in Yokohama City (FY1961-FY199) Not detected ~ 2.44 bottles / L |
|---|---|
| ☆ | ・Schools whose use of asbestos has been found since September 13 (interim report) |
Inquiries to this page
Education and Facilities Division, Board of Education Secretariat Facilities Department
Telephone: 045-671-3254
Telephone: 045-671-3254
Fax: 045-664-4743
Email address: ky-shisetsu@city.yokohama.lg.jp
Page ID: 323-558-715
