Need for adopting modern techniques in agri sector stressed
By Trriq Chaudhry

ISLAMABAD—The technical experts continued their deliberations at 2nd International Conference on Ammonia & Urea Technology here on Tuesday underscored the need of adopting modern means of fertilizers applications for enhancing soil productivity and achieving more agriculture production.
The participants read out different papers highlighting the importance of the subject calling upon the farmers to use fertilizers in line with requirements of the soils. The paper describes the effects on Secondary Reformer and waste heat boilers as a result of Process air compressor surging, experienced at Ammonia-2 Unit for the 1st time in the history of Engro Chemicals Pakistan Limited, Daharki.
The Incident resulted in a plant shutdown of 12 days. It also describes analysis, repair work and problems encountered to put the plant in service in minimum possible time and the remedial actions taken to handle the issue.
In his papers Arshad Masood Zahidi & Rehman Hanif, Engro Chemicals Pakistan Limited brings out the how the initial strategy and road map was developed to complete this very challenging world class project with very successful results.
It also highlighted major problems causing deviation from the plan and the continuous changes made to stay on course with the main objective.
Giuseppe Merelli, Technical Manager, Snamprogetti S.P.A. & Sunder VISWANATHAN, Commissioning Manager, Snamprogetti S.P.A. gives detailed account of events leading to deactivation of pre-reformer catalyst, study and analysis done Comments on Safety Management in Operation over Ten Years Abstract.
This paper briefs the safety production of Tianhua’s ammonia and urea plants since they were put in operation ten (10) years ago, summaries and analyzes the occurrence laws of equipment accidents, personnel injury accidents, experience and lessons as well as the corresponding precautions taken during the past 10 year period, aiming to find out the key points of next step safety production work for colleagues, reference and communication.
Yang Xin, Sichuan Tianhua Co. Ltd., China Inspection and Maintenance Needs of High Pressure Equipment of Urea Plant his paper presents consideration on corrosion in urea plants.
These considerations include safety, best criteria and procedure for inspection and the criteria for good maintenance. The paper presents methods to detect and repair carbamate solution leakages. The paper also describes some of the most repairs feasible in field and give some best criteria about how to arrange for maintenance purpose.
Cesare Miola, Consultant High Pressure Ammonia Urea Equipment, Italy Heat exposure to Waste Heat Steam Generator’s gas inlet channel due to refractory failure and its repair according to Fitness-for-Service Code (API-579). After 06 years of operation, fire damage occurred on the inlet nozzle of reformed gas waste heat steam generator. The paper presents results of the failure analysis, description of the work done and fitness-for-service assessment within the guidelines provided under ‘Recommended Practice for Fitness-for-Service (API-579).
The morphology of nitride layer formed has been discussed in terms of case depth & maximum hardness. X-Ray diffraction of the samples was performed to identify the nature of nitride layer formed.