Friday, September 07, 2007

Industrial troubleshooting using Radioisotopes

TCR (India, Kuwait, Saudi Arabia) in association with its Associates have upped its skills to now undertake intelligent pigging as well as other services to help conduct detailed quality inspections and assessments of pipelines/ reactors/ vessels/ process columns in refineries, petrochemicals, chemical, oil and gas industrial vertical.

 

TCR now undertakes:

• Blockage detection in underground pipelines

• Leakage detection/location in pipelines

• Gamma scanning of various process columns

• Residence time distribution analysis

 

Blockage detection in underground cross-country pipelines

TCR can undertake Blockage detection of almost all the major cross country pipelines using radiotracer pigs. Sealed source used is 5-10 mCi of 137Cs or 60Co. Associates of TCR have worked on the Mumbai - Pune 160 Km long pipeline, Kandla - Bhatinda pipeline, Vaizag - Vijaiwada 350 Km long pipeline and many other noteworthy projects.

 

Leakage detection/location in pipelines

Radiotracers are extensively used for locating leakages from underground pipelines and in industrial systems. The technique is cost effective. in the past, TCR Associates have accurately determined and located leaks of the order of 1 litre/hour from 10" dia cross country pipelines.

 

The principle of the Leak detector pig method is as follows:

1.  Leaky section fitted with pig launcher & receiver, radiotracer inlet & outlet

2.  Marker sources are placed on pipe in the dug pits at regular intervals

3.  Pipeline filled completely with diluted radiotracer (short-lived : mostly 82Br as ammonium bromide)

4.  A Data logger records the location of leak with respect to marker sources and downloads the same to a computer

5.  Location of leak is exactly identified with respect to location of marker sources

 

Gamma Scanning of various Process Columns

Gamma Column Scanning Technique is the only technique to view inside the column. Using this technique TCR, in conjunction with a RLA study, TCR can determine the health of a process column and help plants generate maximum output.

 

Residence Time Distribution Analysis (RTD)

In a chemical reaction of known kinetics, the extent of conversion will depend upon the time of reaction or MRT. The resulting distribution of residence times (RTD) governs the overall reaction. Most widely method used for visualization of RTD is ‘stimulus response technique.’ Interpretation RTD curve leads to determine dynamic hold-up of fluid flowing in the system.

 

A computer generated RTD curve gives information such as:

• Type of flow (plug flow, well mixed flow)

• Flow anomalies like, channeling, bye-passing, recirculation, presence of dead zones, parallel flow, etc.

 

TCR's associates have custom developed an RTD software that helps and assists in all analysis efforts.

 

To get a quote for any of the above services, please contact www.tcreng.com

 

 

 

 

No comments: