Secondary Side Deposit Built-up (Sludge Pile) in Steam Generator of K-1: Lab Test Investigation

University of the Punjab Conference Portal, 6th Symposium on Engineering Sciences

Qasim Zia Butt

Last modified: 2016-11-22

Abstract

Chemistry of boiling is very important in steam generator life management and the root causes of sludge accumulation and scale formation will be focused under which the efficiency of KANUPP steam generator is affected. During the previous years of KANUPP operation and besides maintain the Boiler feeder water (BFW) chemistry within prescribed limits given by vendor, sludge got accumulated in the steam generators. In this study root causes of this amount of sludge pile accumulation is to be sorted out. The objective of this lab test program is to investigate the role of secondary coolant chemistry (AVT treatment, etc) and of fabrication material (carbon steel copper based alloys) on deposit build-up. Mapping and monitoring of other impurities in the deposit from outside sources as, condenser tube leak and water treatment plant. Sludge lancing samples from six Steam Generators are assessed on atomic absorption spectrophotometer (AAS). Chemical evaluation of sludge samples from recent activity in 2014 and its comparison from the chemical picture of sludge in 2011 obtained are also be discussed and analyzed in this project.

References

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