東海事業所では敷地内の2箇所に放射線測定設備(モニタリングポスト(MP))を設置し、環境放射線測定を行っております。
自然界に存在する放射線の量は、地質により地域差があります。関西は、関東に比べ若干高いことが知られています。
モニタリングポストの測定値は、降雨により大気中に存在する自然の放射性物質を含むチリが地表に降下するため一時的に高くなることがあります。このため日積算雨量を併記しています。
モニタリングポスト設置場所
月/日
MP No.1
(×10-3μSv/h)
MP No.2
(×10-3μSv/h)
日積算雨量
(mm)
2025/11/1
59.3
58.7
0.5
2025/11/2
59.5
59.1
0.0
2025/11/3
59.6
59.1
0.0
2025/11/4
60.0
58.8
0.0
2025/11/5
59.6
59.1
0.0
2025/11/6
59.2
58.6
0.0
2025/11/7
59.6
59.2
0.0
2025/11/8
59.2
58.7
0.0
2025/11/9
62.5
62.3
4.0
2025/11/10
59.6
59.3
0.0
2025/11/11
59.8
59.5
0.0
2025/11/12
59.1
58.8
0.0
2025/11/13
59.9
59.6
0.0
2025/11/14
59.8
59.3
0.0
2025/11/15
59.3
58.9
0.0
2025/11/16
59.7
59.3
0.0
2025/11/17
60.3
59.6
0.0
2025/11/18
60.6
60.4
0.0
2025/11/19
59.7
59.6
0.0
2025/11/20
60.0
59.7
0.0
2025/11/21
61.0
60.7
0.0
2025/11/22
60.7
60.3
0.0
2025/11/23
60.8
60.4
0.0
2025/11/24
61.1
60.5
0.0
2025/11/25
63.1
63.0
1.5
2025/11/26
60.2
60.1
0.0
2025/11/27
59.9
59.6
0.0
2025/11/28
60.8
60.5
0.0
2025/11/29
60.1
59.6
0.0
2025/11/30
60.4
60.0
0.0
月/日
MP No.1
(×10-3μSv/h)
MP No.2
(×10-3μSv/h)
日積算雨量
(mm)
2025/10/1
65.9
65.1
21.0
2025/10/2
60.4
59.8
3.0
2025/10/3
59.7
59.1
0.0
2025/10/4
60.2
59.4
0.0
2025/10/5
60.5
59.3
0.0
2025/10/6
61.1
60.1
0.5
2025/10/7
61.1
60.4
1.5
2025/10/8
66.5
64.4
0.0
2025/10/9
60.7
60.1
0.0
2025/10/10
60.8
60.0
0.0
2025/10/11
71.4
71.7
23.0
2025/10/12
59.6
58.9
0.0
2025/10/13
59.6
59.2
0.0
2025/10/14
64.2
63.9
5.5
2025/10/15
60.6
60.2
0.5
2025/10/16
62.3
62.0
6.0
2025/10/17
58.7
58.2
0.5
2025/10/18
59.1
58.4
0.0
2025/10/19
59.7
59.2
0.0
2025/10/20
61.3
61.1
0.0
2025/10/21
59.3
58.9
0.0
2025/10/22
59.3
58.8
0.0
2025/10/23
59.6
59.1
0.0
2025/10/24
59.8
59.3
0.0
2025/10/25
61.9
61.8
1.0
2025/10/26
60.2
60.3
3.5
2025/10/27
59.6
59.1
0.0
2025/10/28
59.6
59.3
0.0
2025/10/29
59.2
58.7
0.0
2025/10/30
59.5
58.9
0.0
2025/10/31
63.2
63.0
44.5
月/日
MP No.1
(×10-3μSv/h)
MP No.2
(×10-3μSv/h)
日積算雨量
(mm)
2025/09/01
62.4
60.7
0.0
2025/09/02
62.8
60.7
0.0
2025/09/03
63.4
61.7
0.0
2025/09/04
62.7
61.1
2.5
2025/09/05
61.0
60.1
86.5
2025/09/06
59.8
58.9
0.0
2025/09/07
60.5
59.2
0.0
2025/09/08
61.5
59.7
0.0
2025/09/09
61.2
59.4
0.0
2025/09/10
61.5
59.9
0.0
2025/09/11
61.6
60.3
1.5
2025/09/12
60.8
59.2
0.5
2025/09/13
60.6
59.1
1.5
2025/09/14
61.6
59.9
0.0
2025/09/15
60.9
59.6
0.0
2025/09/16
62.1
60.2
0.0
2025/09/17
62.3
60.7
0.0
2025/09/18
66.5
65.1
31.0
2025/09/19
62.8
62.1
5.5
2025/09/20
60.1
58.7
0.5
2025/09/21
60.8
59.4
0.0
2025/09/22
60.0
58.8
0.0
2025/09/23
60.1
58.8
0.0
2025/09/24
60.3
59.3
0.0
2025/09/25
61.1
59.8
0.0
2025/09/26
61.8
60.3
0.0
2025/09/27
62.3
60.7
0.0
2025/09/28
62.7
61.0
0.0
2025/09/29
62.4
60.7
0.0
2025/09/30
62.1
60.7
0.0
月/日
MP No.1
(×10-3μSv/h)
MP No.2
(×10-3μSv/h)
日積算雨量
(mm)
2025/8/1
62.7
60.8
8.5
2025/8/2
60.9
59.5
18.0
2025/8/3
61.2
59.3
0.0
2025/8/4
61.6
59.6
0.0
2025/8/5
62.9
60.6
0.0
2025/8/6
63.6
61.5
0.0
2025/8/7
64.3
62.5
0.0
2025/8/8
68.2
65.6
21.5
2025/8/9
61.7
60.2
0.5
2025/8/10
29.1
27.8
0.5
2025/8/11
61.3
59.5
0.0
2025/8/12
63.1
61.6
2.0
2025/8/13
61.6
59.9
0.0
2025/8/14
61.9
60.4
0.0
2025/8/15
63.6
61.9
7.5
2025/8/16
61.9
60.4
0.0
2025/8/17
62.4
60.4
0.0
2025/8/18
63.5
61.3
0.0
2025/8/19
63.9
61.7
0.0
2025/8/20
64.1
62.0
0.0
2025/8/21
64.8
62.5
0.0
2025/8/22
64.0
61.8
0.0
2025/8/23
64.5
62.1
0.0
2025/8/24
65.2
62.8
0.0
2025/8/25
64.3
61.9
0.0
2025/8/26
64.4
61.9
0.0
2025/8/27
66.4
64.1
53.5
2025/8/28
61.6
60.3
0.0
2025/8/29
62.1
60.7
0.0
2025/8/30
62.7
61.0
0.0
2025/8/31
62.8
61.1
0.0