Survey of the actual situation of asbestos-containing spray materials in school facilities (interim report) (2005)

Last update date September 15, 2020

１． Outline of survey

A fact-finding survey was conducted during the summer vacation to investigate the use of asbestos-containing spraying materials at municipal school facilities. In the survey, spraying materials and felt materials were sampled, and samples were analyzed sequentially. As a result of the analysis, if the use of asbestos is found, a scattering survey is conducted to check the asbestos scattering status in the air as necessary. (Felt material: folded plate backed as asbestos insulation)

Outline of survey
・Fact-finding survey	In the survey, a visual survey was conducted on the buildings of each school. We conducted sampling of spraying materials and other materials that may contain asbestos and investigated the deterioration status. The collected samples are analyzed by the Institute of Environmental Science, and the type and content of asbestos are confirmed. (Analysis is expected to be completed in mid-September.)
・Scatter volume survey	If asbestos is found as a result of the analysis, a survey will be conducted to see if asbestos is scattered in the air in the sample space. The survey will be conducted with priority given to classrooms and corridors that elementary school studenｔ students use on a daily basis.

２． Survey Status

As of September 9, 19 schools found that use asbestos was found.

Survey Status
Schools surveyed	Number of sampling schools
Schools surveyed		During analysis	Analysis of
520 schools	196 schools	50 schools	146 schools

Analysis Status Diagram

３． Future Actions

For schools where asbestos is found to be used, priority will be given to places where elementary school studenｔ students and others use them daily, taking into account the scattering situation. The measures include removal, containment, and enclosure. In that case, school closures should be considered according to the work situation. In addition, the survey results will be announced using the website, etc., including the status of measures.

Usage and response status of municipal school sprayed asbestos As of September 9, 2005

Oh Kanagawa Ward
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

Oh Naka Ward
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
Yokohama Sogo High School	Gymnasium (felt material)	39	Chrysothyl (white)	Approx. 100%	Less than 0.11 bottles/L		Responding to
Yokohama Sogo High School	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 %	Scatter volume investigation

Oh Konan Ward
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% or more	Scatter volume investigation

Oh Hodogaya-ku
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 ％	Scatter volume investigation
Sakamoto Elementary School	school lunch Room Hall (under ceiling)	47	Chrysothyl (white)	Less than 1%	Scatter volume investigation
Setogaya Elementary School	Music Room Ceiling	50	Closidolite (blue)	1～5 ％	Scatter volume investigation
Sugeta School for the Disabled	Gymnasium (felt material)	56	Chrysothyl (white)	Approx. 100%	0.3 pcs/L		Responding to
Sugeta School for the Disabled	Slope wall	49	Closidolite (blue)	1～5 ％	1.2 bottles/L	Wall protection	Responding to

Oh Asahi Ward
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 %	Scatter volume investigation
Nakao Elementary School	Staircase	53	Chrysothyl (white)	50% or more	Less than 0.11 bottles/L		Responding to

Oh Isogo Ward
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) chrysotile (white)"	1～5 ％	Scatter volume investigation

Oh Kanazawa Ward
School name	Location of use	Year of construction	Type	Content	Scattering situation※	Current situation	Future Actions
Namiki Daiichi Elementary School	Classroom	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% or more	Scatter volume investigation

Oh Midori Ward
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

Oh Aoba Ward
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	Scatter volume investigation

Oh Totsuka Ward
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 9/9 to 10
Hirato Junior High School	Elevator room	11	Chrysothyl (white)	Less than 1%	Less than 0.11 bottles/L		Responding to

Oh Seya Ward
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

Remarks
※	・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

For inquiries to this page

Education and Facilities Division, Board of Education Secretariat

Phone: 045-671-3254

Fax: 045-664-4743

Email address: ky-shisetsu@city.yokohama.jp

List of related pages Open the menu in the related page list

Survey of asbestos use in school facilities (2005)
Surveillance of asbestos-containing spray materials at school facilities (final report) (2005)
Survey of the actual situation of asbestos-containing spray materials in school facilities (interim report) (2005)
Survey of asbestos use in school facilities, etc. (No. 2) (FY2005)
Survey of asbestos use in school facilities, etc. (First Report) (FY2005)

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