Oil & Gas Innovation OGI Autumn 2017 Digital Version - Page 45

LumaSense E2T Pulsar 4. required for ignition of flared gases that can be either continuous or intermittently feeding the flare. When there is no flaring the pilots must remain ignited and status monitored to assure the flare is ready 100% of the time for any emergency flaring requirements. Pilot flames must be monitored to assure ignition of flared gases during flare operation. However, thermocouple failure due to thermal shock leaves operators without pilot monitoring capability until the next scheduled flare tip maintenance. Like thermal oxidizers, IR pyrometers offer a continuous monitoring solution for pilot flames. Pilot flames are critical to ensure that the gases will be ignited for environmental protection and confirm compliance with government-set pilot status recording requirements. A loss of pilot flames can release gases that endanger plant personnel, cause environmental damage and, if improperly ignited, costly damage to the flare stack infrastructure. Operation of the flare stack without a pilot monitoring system can result in violation of governmental flare operational regulations. Thermocouples are the industry standard for pilot detection, however failures are common and secondary redundant monitoring methods are often installed to enhance a failing thermocouple issue and increase redundancy and reliability of pilot monitoring in this critical monitoring requirement. The LumaSense Quasar Pilot Monitoring system is an IR pyrometer based system that can provide pilot status from ground level. It can be used as a redundant monitoring system with an existing thermocouple system or installed as an aftermarket replacement for failing thermocouples without removing the flare stack from operation. The E2T Quasar 8100 series are monitoring and detection instruments designed for continuous duty monitoring of pilot flame (type PM). A sight- through optical system and selection of various spot sizes enables the E2T QUASAR M8100- EXP to be positioned as far as 400 m from the stack being monitored. Alignment on the LumaSense E2T Quasar 8100. target is accomplished with the aid of advanced optics. Custom electronics adapt to target movement, varying luminosity and most climate conditions. The alarm delay circuit can be adjusted, eliminating false alarms from temporary loss of signal due to intermittent flames, adverse weather and wind. Conclusion Infrared temperature monitoring can help petrochemical facilities achieve optimal performance and safety for their emissions processing equipment. It is superior to thermocouples, as contact with the process is not required. LumaSense infrared temperature monitoring solutions, such as Pulsar and Quasar, are positively addressing the challenges of flame transparency in combustion processes and can make emissions process safer, more reliable and efficient. • Author: David Ducharme, LumaSense Technologies, Inc. Contact: lumasenseinc.com info@lumasenseinc.com Tel: + 49 69 973 73-0 Sulphur Recovery Unit and Flare Stack Monitoring Schema. 45