Specialized substances require management at suppressive concentrations, so confirmation through measurement is necessary! Introduction of improvement cases.
We would like to introduce the issues and improvement measures related to the amendments to the Special Substances Prevention Regulations. In grinding operations involving special substances (cobalt), it is difficult to enclose only the grinding area due to the presence of optical devices attached to the grinding equipment. Additionally, since the management of special substances (cobalt) is based on suppression concentration, confirmation through measurement is necessary, which posed certain challenges. As an improvement measure, we implemented an external hood system by enclosing the back of the suction inlet (the back of the equipment) with a curtain, allowing us to confirm the suppression concentration at the designed airflow. [Challenges] - Preparation of notification documents to the Labor Standards Inspection Office and accompanying summary documents, calculation sheets, drawings, etc., in response to the amendments to the Special Substances Prevention Regulations (effective January 1, 2013). - Design of local exhaust equipment (hoods, ducts, dust collection devices) considering three factors: workability, energy conservation, and compliance with relevant laws and regulations. *For more details, please refer to the related links or feel free to contact us.
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【Improvement Proposal】 ■ By enclosing the back of the suction inlet (the back of the device) with a curtain, it will function as an external hood, allowing airflow to be directed towards the operator's position. ■ By using a curtain for the back and making it easy to move and detach the hose, we ensure that the operability of the grinding device is not compromised. ■ The suction inlet will be connected to a duct hose and installed as close as possible to the grinding area without interfering with the work, while also avoiding interference with optical devices. *For more details, please refer to the related links or feel free to contact us.
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