The Global Residential Gas Generator market is currently growing at a steady rate. The market receives the majority of its revenue from North American countries, followed by the APAC region, and Europe. The overall market is expected to grow at a CAGR of 9.55 percent during the period 2013-2018.

The Global Professional Lighting market is currently growing at a steady rate across the world. The market was dominated by the APAC region, accounting for a share of 42 percent in 2013. It was followed by Europe and North America. The Office segment was the largest revenue contributor of the market in 2013. Lighting sources contributed a majority of the revenue to the market in the same year. However, the Lighting Control System segment is expected to post a rapid growth during the period 2014-2018. The Global Professional Lighting market is expected to grow at a CAGR of 5.91 percent during the forecast period.

 

Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. Online monitoring can be employed to identify those sensors that require calibration, allowing for calibration of only those sensors that need it. International application of calibration monitoring has shown that sensors may operate for longer periods within calibration tolerances. This issue is expected to also be important as the United States looks to the next generation of reactor designs (such as small modular reactors and advanced concepts), given the anticipated longer refueling cycles, proposed advanced sensors, and digital instrumentation and control systems. The U.S. Nuclear Regulatory Commission (NRC) accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no U.S. plants have been granted the necessary license amendment to apply it. This report presents a state-of-the-art assessment of online calibration monitoring in the nuclear power industry, including sensors, calibration practice, and online monitoring algorithms. This assessment identifies key research needs and gaps that prohibit integration of the NRC-approved online calibration monitoring system in the U.S. nuclear industry. Several needs are identified, including an understanding of the impacts of sensor degradation on measurements for both conventional and emerging sensors; the quantification of uncertainty in online calibration assessment; determination of calibration acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and assessment of the feasibility of using virtual sensor estimates to replace identified faulty sensors in order to extend operation to the next convenient maintenance opportunity.