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- Surveillance of asbestos-containing spray materials at school facilities (final report) (2005)
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Surveillance of asbestos-containing spray materials at school facilities (final report) (2005)
Last update date September 15, 2020
１． Outline of survey
In order to investigate the use of asbestos-containing sprayed materials at municipal school facilities, a fact-finding survey was conducted during summer vacation. In the survey, we checked the deterioration status of the spraying material and felt materials, sampled and analyzed. As a result of the analysis, if the use of asbestos was found, a scattering survey was conducted to check the asbestos scattering status in the air. (Felt material: folded plate backed as asbestos insulation)
| ・Fact-finding survey | In the survey, a visual survey was conducted on the buildings of each school. We investigated the deterioration status of sprayed materials that may contain asbestos and collected samples. The collected samples were analyzed by the Institute of Environmental Science, and the type and content of asbestos were confirmed. |
|---|---|
| ・Scatter volume survey | As a result of the analysis, if asbestos was found, a survey was conducted to see if asbestos was scattered in the air in the sampled space. The survey was conducted with priority given to spaces such as classrooms and corridors used by elementary school studenｔ students. |
２． Survey Status
| Schools surveyed | Spray materials, etc. No use | Spray materials, etc. Available | ||
|---|---|---|---|---|
| Content 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 sprayed materials that may contain asbestos, 324 schools were identified as "no use" and 196 schools were confirmed to be "useable".
・At 196 schools that were identified as "available", 23 schools found asbestos content as a result of collecting and analyzing samples.
・The survey results are as shown in the attached sheet "Use situation such as municipal school sprayed asbestos and correspondence situation".
３． Future Actions
For schools where the use of asbestos is found, priority will be given to places where elementary school studenｔ students use on a daily basis and take necessary measures. In that case, school closures will be considered depending on the work situation. In addition, the survey results and the status of response will be announced on our website.
Usage and response status of municipal school sprayed asbestos As of September 21, 2005
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Sugeta Junior High School | First drawing room (under the ceiling) | 55 | Chrysothyl (white) | Less than 1% | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Minato Junior High School | Second Disaster Prevention Warehouse | 57 | Chrysothyl (white) | 5% or more | Less than 0.11 bottles/L | Responding to | |
| A stairs | 57 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | ||
| Helix staircase | 57 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | ||
| Staff entrance | 57 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | ||
| Yokohama Sogo High School | Gymnasium (felt material) | 39 | Chrysothyl (white) | Approx. 100% | Less than 0.11 bottles/L | Responding to | |
| Substation room | 47 | Chrysothyl (white) | 90% or more | Less than 0.11 bottles/L | Responding to | ||
| Minato Sogo High School | Disaster Prevention Monitoring Office | 55 | Chrysothyl (white) | Less than 1 % | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation ※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Aibuyama Elementary School | Corridor plumbing | 51 | Amocyte (tea) | 5～10％ | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation ※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Kawashima Elementary School | Crossing corridor (behind the ceiling) | 54 | Chrysothyl (white) | 1～5 ％ | 0.29 bottles/L on the third floor Less than 0.11 bottles/L on the 4th floor | Responding to | |
| Sakamoto Elementary School | school lunch Room Hall (under ceiling) | 47 | Chrysothyl (white) | Less than 1% | Less than 0.11 bottles/L | Responding to | |
| Setogaya Elementary School | Music Room Ceiling | 50 | Closidolite (blue) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | |
| Sugeta School for the Disabled | Gymnasium (felt material) | 56 | Chrysothyl (white) | Approx. 100% | 0.3 pcs/L | Responding to | |
| Slope wall | 49 | Closidolite (blue) | 1～5 ％ | 1.2 bottles/L | Wall protection | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Oike Elementary School | Printing room (under the ceiling) | 57 | Chrysothyl (white) | Less than 1 % | 0.12 bottles/L | Responding to | |
| Nakao Elementary School | Staircase | 53 | Chrysothyl (white) | 50% or more | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Bairin Elementary School | Janitor room plumbing | 49 | Amocyte (tea) Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | |
| Yokodai-Daiichi Junior High School☆ | Engineer room plumbing in ceiling | 46 | Chrysothyl (white) | Approx. 100% | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation ※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Namiki Daiichi Elementary School | Classrooms, corridors, etc. | 53, 56, 59 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | |
| Tomioka Higashi Junior High School | Corridor, etc. | 54, 55 | Chrysothyl (white) | 5～10％ | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Midori Elementary School | Stair landing | 55 | Amocyte (tea) | 50% or more | 0.7 pcs/L | Enclosure work 8/31 Implementation |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Utsukushigaoka Junior High School | Classroom beams (behind the ceiling) | 47 | Amocyte (tea) | 50% or more | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Higashi Gumizawa Elementary School | Ceiling top floor ceiling | 50 | Chrysothyl (white) | 50% or more | 0.7 pcs/L | Enclosure work September 9 to 9/10 | |
| Substation room | 50 | Chrysothyl (white) | 50% or more | 0.11 bottles/L | Responding to | ||
| Higashitotsuka Elementary School☆ | Engineer room plumbing in ceiling | 48 | Chrysothyl (white) | Approx. 100% | 0.53 bottles/L | Responding to | |
| Hirato Junior High School | Elevator room | 11 | Chrysothyl (white) | Less than 1% | Less than 0.11 bottles/L | Responding to |
| School name | Location of use | Year of construction | Type | Content | Scattering situation※ | Current situation | Future Actions |
|---|---|---|---|---|---|---|---|
| Kami-Seya Elementary School | Warehouse | 49 | Amocyte (tea) | Approx. 100% | 0.12 bottles/L | Responding to | |
| Futatsubashi Elementary School☆ | Men's Toilet PS Inside Piping | 38 | Chrysothyl (white) | Less than 1% | Less than 0.11 bottles/L | Responding to | |
| Futatsubashi School for the Disabled☆ | Work room | 56 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to | |
| Staff room | 56 | Chrysothyl (white) | 1～5 ％ | Less than 0.11 bottles/L | Responding to |
| ※ | ・Air Pollution Control Law site boundary concentration standard 10 tubes/L ・Survey of asbestos concentration in the atmosphere in Yokohama City (1961-1999) Non-detection ~ 2.44 bottles / L |
|---|---|
| ☆ | ・Schools where asbestos has been found since September 13 (interim report) |
For inquiries to this page
Education and Facilities Division, Board of Education Secretariat
Phone: 045-671-3254
Phone: 045-671-3254
Fax: 045-664-4743
Email address: ky-shisetsu@city.yokohama.jp
Page ID: 323-558-715
