Safety Evaluation Table of Domestic Production Bases

Safety evaluation of substances subject to PRTR

How to approach the “Degree of Safety Evaluation”

While the PRTR Law requires reports of discharge amounts of chemical substances into the environment, the impact of chemical substances on the environment largely depends not only on the discharge amount but also on the degree of hazardousness. Therefore, it is necessary to take action based on comprehensive evaluation to reduce the risk that chemical substances pose to the environment, considering both the discharge amount and the hazardousness.
Accordingly, since 2010, with reference to the “Guidelines for Evaluation of Degree of Impact on Safety by Chemical Substances” issued by Kanagawa Prefecture, we have calculated the “translation discharge amount” obtained by multiplying the “discharge amount” of the individual substances to be reported under the PRTR Law by the “toxic coefficient” depending on the hazardousness published by Kanagawa Prefecture, and we have calculated the total discharge amount by adding them together. Then, we ranked the degree of impact on “human health” and on the “ecological system.” We clarified the direction of risk reduction by indicating the position of each business site with reference to “Evaluation Table of Degree of Impact on Safety.”
For example, the Hiratsuka Factory recorded a total translation discharge amount for human health of 5,382.931 tons and ranked II, while with a total translation discharge amount for the ecological system of 15.154 tons, it ranked 4.
Accordingly, the degree of impact on safety of the Hiratsuka Factory is indicated as “II-4.”

Reasons for changes in FY 2021

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Hiratsuka Factory, Ⅱ-4 to Ⅲ-4
The effects on human health improved.
The amount of No. 58 ethylene glycol monomethyl ether handled and discharge decreased.
Shinshiro Plant, Ⅴ-4 to Ⅶ-5
The effects on human health and the ecosystem improved as well.
The amount of No. 333 Hydrazine and No. 154 Cyclohexylamine handled and discharged decreased.
Mishima Plant, V-4 to Ⅵ-5
The effects on human health and the ecosystem improved as well.
The amount of No. 411 Formaldehyde discharge decreased.
There were no changes in the ranks of Hiratsuka Factory, Shinshiro-Minami Plant, Mie Plant, Hamatite Plant, Ibaraki Plant, and Nagano Plant.

Explanation about degree of impact on safety

Toxicity ranking and toxicity factor

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Rank A B C D
Toxicity factor 1000 100 10 1

Ranking of effects on human health

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Rank Total converted emissions (Effects on human health)
I 10,000t or more
II 3,000t to less than 10,000t
III 1,000t to less than 3,000t
IV 300t to less than 1,000t
V 100t to less than 300t
VI 30t to less than 100t
VII 10t to less than 30t
VIII Less than 10t

Ranking of effects on the ecosystem

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Rank Total converted emissions (Effects on the ecosystem)
1 10,000t or more
2 1,000t to less than 10,000t
3 100t to less than 1,000t
4 10t to less than 100t
5 Less than 10t

Changes in safety evaluation of each plant

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Plant Name 2017 2018 2019 2020 2021 Improvement or worsened points
Hiratsuka Factory Ⅴ-4 Ⅱ-4 Ⅱ-4 Ⅱ-4 Ⅲ-4 The effects on human health better, and the effects on the ecosystem were no change as compared with the previous year (FY 2020).
Adhesives and Sealants Plant Ⅵ-5 Ⅶ-4 Ⅶ-5 Ⅶ-5
Nagano Plant Ⅷ-5 Ⅷ-5 Ⅷ-5 Ⅷ-5 Ⅷ-5 There was no change from the previous year (FY 2020).
Ibaraki Plant Ⅶ-5 Ⅶ-5 Ⅵ-5 Ⅵ-5 Ⅵ-5 There was no change from the previous year (FY 2020).
Shinshiro Plant Ⅳ-4 Ⅳ-4 Ⅳ-4 Ⅴ-4 Ⅶ-5 The effects on human health are better, and the ecosystem is also better compared to the previous year (FY2020).
Shinshiro-Minami Plant Ⅴ-5 Ⅴ-5 Ⅴ-5 Ⅴ-5 Ⅴ-5 There was no change from the previous year (FY 2020).
Mie Plant Ⅵ-5 Ⅵ-5 Ⅵ-5 Ⅵ-5 Ⅵ-5 There was no change from the previous year (FY 2020).
Mishima Plant Ⅳ-4 Ⅴ-4 Ⅳ-4 Ⅴ-4 Ⅵ-5 The effects on human health are better, and the ecosystem is also better compared to the previous year (FY2020).
Onomichi Plant Ⅶ-5 Ⅶ-5 Ⅷ-5 Ⅶ-5 Ⅶ-5 There was no change from the previous year (FY 2020).
  • As the Nagano Plants have no substances to be reported (less than 1 ton), their details are not attached.
  • Each plant discloses information in accordance with the requirements of the law.
Discharge and total transfer amounts of PRTR in domestic factories
Discharge and total transfer amounts of PRTR in domestic factories (by location)
Onomichi Plant
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Shinshiro Plant
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Shinshiro-Minami Plant
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Mishima Plant
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Mie Plant
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Hiratsuka Factory
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Ibaraki Plant
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Nagano Plants
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