August 20, 2013

Use Air Particle Monitoring to Supplement Flame and Gas Detector Protection in Compressor Stations

GasCompressorThis blog post will be discussing the dangers of oil mist in gas compressor stations. Lubrication oil is often circulated through natural gas compressors to provide cooling and to prevent engine wear. The lube oil system is pressurized, and as a result, there is a high risk potential for leakage. When leaks occur, the lube oil often sprays into the atmosphere producing an oil mist or atomized cloud. The mist not only creates an expensive, time-consuming clean-up project but more importantly can produce highly toxic smoke or burst into explosive flame upon contact with hot surfaces or engine spark ignitions. It is not uncommon that gas transportation companies can report dozens of oil leaks per year in a single gas compression station facility, and some of those leaks break into fire, causing significant damage and production loss. Numerous industry studies have verified that both smoke and oil mist often precede flame and either may obscure or blind some optical flame detectors, preventing fire warning and potentially leading to disaster.

The solution to this pressing safety issue may be an air particle monitor (APM), which can be used as a supplement to other flame and gas detectors. An APM is an infrared optical detector that monitors ambient air for the presence of particulate matter such as dust and oil mist; and products of combustion like smoke and carbon. The principle of operation is based on the reflection of infrared radiation by airborne particles. Field-adjustable zero level of obscuration, as well as multiple sensitivity settings, allow for fine tuning within specific application conditions to optimize performance and eliminate false alarms. Sensor performance is not affected by high volume air velocity. Responses from the APM include actuation of relays, LED indicators, LED alphanumeric display and 4–20 mA DC Millenniumoutput for transmitting information to other devices. This type of detector is ideally suited for the previously described natural gas compressor station system where lube oil is used to cool and lubricate compressors in pipeline or processing applications. This advanced detection system provides compressor buildings with fast, accurate detection of lube oil leaks manifested by smoke or oil mist, giving a proven source of protection for plant and personnel. Natural gas transportation companies worldwide and several offshore platform operators have successfully implemented an APM – specifically the Millennium Oil Mist Detector – Air Particle Monitor (APM) from Net Safety Monitoring – to extend the protection provided by optical flame detectors and gas sensors.

How do you cope with oil mist leaks?

For additional information, Click HERE.

August 6, 2013

A Short History of Water

Hands and stream of water.Water. Here at Rosemount Analytical we see a lot of it and our pH, conductivity, chlorine, DO, and amperometric monitoring systems help keep water clean and safe – whether for drinking or for use in industrial processes.

But how did humans work with water before such instruments existed? Just for a fun break, here’s a short history of water and its treatment:

  • egyptianAncient scriptures show that early Egyptian and Indus Valley cultures used processes to keep their water pure and it was amazingly effective. The processes included boiling, heating water in the sun, or poking a heated iron into the water. They may also have used filtering through sand and gravel.
  • hippocratesHippocrates, in Greece, created a cloth bag filter called the “Hippocrates Sleeve” which captured sediment in order to improve the water’s taste and smell.
  • In Sparta, a drinking cup invented by a ninth century B.C. lawgiver was designed to attract the mud in the water to its sides, making the water appear more clear and palatable.
  • The first desalination attempt was made by Sir Francis Bacon in 1627 using a sand filter. He hypothesized that the sand would remove the salt. While his experiments failed, they did revive interest in filtration technology.
  • microscopeIn the 1700s, Anton Van Leeuwenthoek built the first microscope by grinding and polishing curved lenses. For the first time, people could see that organisms lived in water that was presumed to be clean.
  • The microscope helped overcome the presumption that good-tasting water that had no odor was pure. The first use of chlorine as a water treatment to kill cholera bacteria followed. Several cities began regular water treatment with sand filters and chlorine.
  • In the late 19th century, municipal water treatment became more prevalent in the US using rapid sand filtration. Waterborne diseases such as cholera and typhoid were greatly reduced by the early twentieth century.

waterfountainThere you have it. A brief history of something we take for granted. Can we help you with the future of water? For more info on what Rosemount Analytical offers for water treatment, Click HERE. Thanks so much for coming by.