Yes, explosion protection is absolutely necessary when introducing sulfur into bitumen modification equipment. Sulfur dust and sulfur vapors can form explosive mixtures with air, especially at elevated temperatures typical for PMB production. In addition, sulfur melts and reacts exothermically, and hydrogen sulfide (H?S) may be released if conditions are uncontrolled. Therefore, equipment must be designed with ATEX-compliant motors and sensors, proper grounding, inerting or ventilation of dosing zones, temperature interlocks, and sealed feeding systems. This is not just good practice but a basic safety requirement in sulfur-modified bitumen plants.