ISA MNTRNG MEAS I&C PERF NUC PWR PLNT-2014 Monitoring and Measuring I&C Performance in Nuclear Power Plants.pdf
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1、MONITORING AND MEASURING I V = voltage; I = current).2 Fig. I.2 Data acquisition signal path for OLM .12 Fig. 1.1 Example of conventional sensors used in a PWR NPP 23 Fig. 1.2 Important pressure transmitters in a loop of a PWR plant24 Fig. 1.3 Bathtub curve showing different failure possibilities .2
2、7 Fig. 1.4 OLM techniques categorized by source of data .33 Fig. 1.5 OLM applications versus sampling frequency 34 Fig. 1.6 OLM applications of static and dynamic data analysis 35 Fig. 1.7 Simplified diagram of chemical and volume control system components 37 Fig. 1.8 Actual noise data from a pressu
3、re transmitter in an NPP and spectrum of one-hour record of this data .38 Fig. 1.9 Effect of sensing-line blockage on dynamic performance of a pressure transmitter .39 Fig. 1.10 Auto power spectral density containing vibration signatures of reactor internals 39 Fig. 1.11 Principle of LCSR test 42 Fi
4、g. 1.12 Potential outcomes of TDR tests .44 Fig. 1.13 Integrated OLM system .46 Fig. 2.1 Slope and intercept of a calibration curve 50 Fig. 2.2 Schematics of two typical deadweight testers .50 Fig. 2.3 Zero shift .53 Fig. 2.4 Span shift with and without zero shift .54 Fig. 2.5 Hysteresis 54 Fig. 2.6
5、 Principle of as-found and as-left calibration limits 57 Fig. 2.7 In-situ methods to verify the calibration of process instruments 58 Fig. 2.8 On-line monitoring data for four boiler level transmitters in an operating power plant 59 Fig. 3.1 Zero-order transfer function 62 Fig. 3.2 Frequency test pr
6、inciple 63 Fig. 3.3 Equipment setup for PI testing .65 Fig. 3.4 Typical PI test transients 65 Fig. 3.5 PI test transients from response-time testing of force-balance pressure transmitters 67 Fig. 3.6 Noise data acquisition sequence .68 Fig. 3.7 Normal and skewed APDs of pressure transmitter noise si
7、gnals .70 Fig. 3.8 Examples of PSDs of nuclear plant pressure transmitters .71 Fig. 3.9 Equipment setup for sensor response-time testing using the noise analysis technique .72 00-Frontmatter_final to ISA.indd 9 12/18/2013 2:32:55 PMx Monitoring and Measuring I (b) LCSR can determine the degree of bo
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