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Efficient Coker Operation begins with Accurate and Reliable Process Variable Measurement

Presented By

Stan Miller - Clearguard Pty Ltd


Every automated industrial process, requires accurate, reliable, continual measurement. The most common method of level and flow measurement is by differential pressure transmitters, (Dp Cells) however, these can be hampered by partial plugging of tapping points and impulse lines. Many processes have services, such as level measurement on the reactor and scrubber where the operators know that they cannot rely on the instruments. There are also many other safety critical services. Scale, soot, or crystals build up on the orifice of the tapping point over a period of time, this gradually affects the process variable measurement to a point where instrument data is inaccurate. The industry standard method of removing this scale is known as rodding out or Blowing out and is typically carried out manually, under permit, once the hole is completely blocked. This exposes a maintenance or process operator, to (often live) process and the obvious HAZOP risks, resulting in the need for strict PPE and onerous safe working procedures. By frequently stroking a scraper through the bore of a tapping point before debris begins to form, you will reduce the potential of blocked tapping’s and unreliable field instrument data.This eliminates the need for obtrusive and potentially unsafe maintenance rodding/blowing out practices, increased purge consumption, dual, triple and quadruple redundancies, oversized tapping points and lack of confidence in data from the field instrument. Rather than use non-contact instruments to treat the symptom, our workshop will focus on reducing the HAZOP risks to personnel, and improving plant process accuracy.
Our workshop will detail:

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