The Occupational Safety, Health and Working Conditions (Andhra Pradesh) Rules, 2026
Rule 155. Centrifuges
Official text
1. Inter locking Arrangements:
(a) Every centrifuge shall be provided with a lid-opening interlock to ensure that the lid cannot 2. be opened while the basket is in motion.
(a) Charging and discharging operations shall be effectively interlocked with complete stoppage of the motor and rotation. 3. Dynamic Balancing and Vibration Control: Each centrifuge shall be equipped with suitable dynamic balancing arrangements and continuous vibration monitoring devices to prevent mechanical failure. 4. Over-speed Protection: All centrifuges shall be fitted with approved over-speed protection systems, including speed governors and automatic trip mechanisms, to stop the equipment in the event of excess speed. 5. Alarm and Warning Systems: Adequate audible and visible alarm systems shall be provided to indicate:
(i) Over-speed condition,
(ii) Excessive vibration,
(iii) Abnormal bearing temperature rise,
(iv) Failure of nitrogen supply or inserting system. 6. Access Control:
(a) Not more than one person shall be permitted inside the centrifuge room at any time.
(b) After loading of material, no person shall remain in the vicinity of the centrifuge during operation. 7. Remote Operation: All centrifuges shall be operated, including starting and stopping, only from outside the centrifuge room, with suitable control panels provided for the purpose. 8. Daily Examination: Every centrifuge shall be examined by a competent person at the beginning of each working day, and the equipment shall not be operated until it is certified safe for use. 9. Mother Liquor(ML) Storage: ML tanks shall be installed outside the centrifuge room in a fully closed condition, and their vent lines shall be extended and fitted with certified flame arrestors. 10. Protective Clothing: Workers employed in centrifuge operations shall be issued suitable cotton clothing free from synthetic fibres to minimize static electricity hazards. 11. Anti-static Equipment: Centrifuges shall be fitted with anti-static V-belts, brake shoes, and other components vulnerable to static generation. 12. Bonding and Earthing: All joints, flanges, and connections associated with centrifuge operations shall be provided with suitable crocodile clips or bonding arrangements to ensure proper earthing and dissipation of static charges.