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)
2026/1/1
59.9
60.0
0.0
2026/1/2
62.1
62.7
0.5
2026/1/3
58.9
59.0
0.0
2026/1/4
59.3
59.3
0.0
2026/1/5
59.5
59.6
0.0
2026/1/6
58.4
59.0
0.0
2026/1/7
58.6
59.3
0.0
2026/1/8
60.0
60.5
0.0
2026/1/9
59.4
59.4
0.0
2026/1/10
59.5
59.4
0.0
2026/1/11
60.1
60.4
0.0
2026/1/12
59.2
59.3
0.0
2026/1/13
60.3
60.3
0.0
2026/1/14
59.5
59.4
0.0
2026/1/15
58.8
59.7
0.0
2026/1/16
59.8
59.9
0.0
2026/1/17
60.0
60.0
0.0
2026/1/18
59.6
59.5
0.0
2026/1/19
59.8
59.7
0.0
2026/1/20
59.8
60.0
0.0
2026/1/21
59.7
59.3
0.0
2026/1/22
59.6
59.7
0.0
2026/1/23
60.1
59.9
0.0
2026/1/24
60.4
60.2
0.0
2026/1/25
59.9
59.9
0.0
2026/1/26
59.3
59.2
0.0
2026/1/27
59.9
59.8
0.0
2026/1/28
60.0
60.0
0.0
2026/1/29
60.5
60.1
0.0
2026/1/30
60.1
60.2
0.0
2026/1/31
60.2
60.1
0.0
月/日
MP No.1
(×10-3μSv/h)
MP No.2
(×10-3μSv/h)
日積算雨量
(mm)
2025/12/1
61.4
60.8
0.0
2025/12/2
60.8
60.3
0.0
2025/12/3
62.7
62.4
0.5
2025/12/4
60.1
60.2
0.0
2025/12/5
60.6
60.4
0.0
2025/12/6
60.6
60.2
0.0
2025/12/7
61.0
60.8
0.0
2025/12/8
61.1
60.9
0.0
2025/12/9
60.7
60.3
0.0
2025/12/10
60.7
60.6
0.0
2025/12/11
61.1
60.9
0.0
2025/12/12
60.0
60.0
0.0
2025/12/13
60.3
59.8
0.5
2025/12/14
64.9
65.4
11.0
2025/12/15
58.6
58.6
0.0
2025/12/16
59.2
58.9
0.0
2025/12/17
59.3
59.2
0.0
2025/12/18
59.2
59.1
0.0
2025/12/19
59.5
59.1
0.0
2025/12/20
60.7
60.2
2.0
2025/12/21
61.3
61.4
10.5
2025/12/22
59.0
59.6
0.0
2025/12/23
58.3
58.4
0.0
2025/12/24
68.2
68.3
18.5
2025/12/25
66.6
67.0
10.5
2025/12/26
61.3
61.9
2.5
2025/12/27
60.1
59.0
0.0
2025/12/28
60.3
59.0
0.0
2025/12/29
58.8
58.9
0.0
2025/12/30
59.6
59.6
0.0
2025/12/31
59.2
59.4
0.0
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