Maintenance and Inspection Practices in Coromandel Fertilisers Limited

摘要

Coromandel Fertilisers Limited, commissioned in 1968, is always ahead in adopting various new technological changes and believes that inspection and maintenance plays key role in plant productivity. The maintenance and inspection strategies for continuous operation of the plant are unique. CFL has taken the voluntary implementation of Process Safety Management System (PSMS) for system compliance at higher level, for adhering to operating standards. One of the elements, Mechanical Integrity, ensures the critical equipment integrity. CFL has implemented the inspection programme of "Equipment Health Monitoring " for all the mechanical, electrical, instrument and civil category of assets. CFL has adopted various NDT techniques for assessing the foundation Integrity of critical foundations such as ammonia storage tanks and other major rotary drums. Thermography is being carried out for major electrical equipments and ammonia piping cold insulation integrity. The condition monitoring of critical equipments is being done through sophisticated vibration analyser. The on line shaft vibration for critical turbines are monitored through DCS continuously. CFL has adopted the procedure of systematic planning and execution of annual turnaround. Major replacements like converter for sulphuric .acid plant has been taken up through systematic study of residual life assessment. Thus, details of maintenance and inspection practices are outlined in this paper.