Progress of basic concepts and activities for protecting the environment Progress of environmental protection activities Environmental protection action plan Environmental management system Working to prevent global warming Activities to reduce the environmental impact in production processes Working toward a recycling-based society Investments for environmental protection Contributing to environmental protection through our products About eco-materials With constant monitoring under an environmental monitoring system and the implementation of rational measures to reduce the environmental impact, Nisshin Steel has achieved the environmental standards set forth in laws such as the Air Pollution Prevention Law and the Water Pollution Prevention Law, and in various agreements. We are also striving to properly respond to new substances that have an environmental impact and to improve the collection of data on the quantity of emissions of specified chemical substances and better ways to control them.

Air pollution prevention measures In order to reduce the sulfur dioxides (SOx), nitrogen oxides (NOx), and dust produced by burning, we are reducing the use of fuel under energy conservation measures, converting to clean fuels such as natural gas and LPG, using coal and heavy oil that has low sulfur content, improving combustion technology, and installing low-NOx burners. Also, with environmental monitoring systems we are keeping track of the quantity of NOx and fuels used, with this data sent to local governing bodies by telemeter systems.   1) Generation facilities   SOx: sintering machines, heating furnaces, boilers NOx: sintering machines, heating furnaces, annealing furnaces, boilers Dust: sintering machines   2) Measures   SOx: conversion to low-sulfur blended raw materials, fuel conversion, reduction of quantity of heavy oil burned through hot charging and increased recovery of byproduct gases, etc. NOx: adoption of low-NOx burners Dust: installation of electric dust collectors, fuel conversion   3) Results (company-wide)   Reduction percentage through 2007, taking 1973 as the base year SOx: 75% reduction NOx: 36% reduction Dust: 83% reduction   Measures to prevent water pollution The quality of water discharged from our manufacturing facilities is improved by appropriate control of suspended solids (SS), pH, and chemical oxygen demand (COD) with various water treatment equipment that performs coagulation and sedimentation, filtration, and biological treatment. And with the use of a telemeter system, the main data for controlling water quality is sent to local governments in real time. For example, at the Toyo Works, as at the other works, the industrial water that is used is filtered and neutralized in on-site water treatment equipment until it no longer has components that are harmful to the environment. The stable operation of the water treatment equipment is checked on site and is continually monitored in a monitoring center via control data and television. To protect the beautiful Seto Inland Sea, we have a full system to help to realize an environment that is congenial to people.   Utility monitoring center Water treatment equipment     NEXT

Progress of basic concepts and activities for protecting the environment Progress of environmental protection activities Environmental protection action plan Environmental management system Working to prevent global warming Activities to reduce the environmental impact in production processes Working toward a recycling-based society Investments for environmental protection Contributing to environmental protection through our products About eco-materials