Advances in safety related maintenance

Read or Download Advances in safety related maintenance PDF

Similar electronics books

Getting Started with Processing

Research desktop programming the simple means with Processing, an easy language that allows you to use code to create drawings, animation, and interactive pix. Programming classes frequently commence with conception, yet this ebook helps you to leap correct into inventive and enjoyable initiatives. It's excellent for an individual who desires to examine simple programming, and serves as an easy advent to pix for individuals with a few programming talents.

Linear Systems and Signals (2nd Edition)

Incorporating new difficulties and examples, the second one version of Linear platforms and indications good points MATLAB® fabric in each one bankruptcy and behind the e-book. It provides transparent descriptions of linear platforms and makes use of arithmetic not just to turn out axiomatic idea, but additionally to reinforce actual and intuitive knowing.

Digital Design and Computer Architecture (2nd Edition)

Electronic layout and desktop structure takes a distinct and sleek method of electronic layout. starting with electronic common sense gates and progressing to the layout of combinational and sequential circuits, Harris and Harris use those primary development blocks because the foundation for what follows: the layout of an exact MIPS processor.

Extra resources for Advances in safety related maintenance

Sample text

15. In this connection it should be mentioned that being in a degraded state, the pump is assumed to be still available. As the inclusion of degradation detection probabilities through tests mainly affects the degraded state probability, the availability does not show major changes. Availability 1,00 (a) 25% degradation detection probability 0,95 0,90 0,85 (b) no degradation detection probability 0,80 8 12 16 20 maintenance interval [weeks] Fig. 15. Comparison of the availability of the auxiliary feedwater pump of plant I: In case (a), tests are capable of detecting a degraded state with a probability of 25%, whereas in case (b) tests are not capable of detecting any mode of degradation.

16 the degraded state probabilities are shown for tests being capable of detecting pump degradation with a probability of 50%, now denoted by case (a), and for tests not being capable of detecting a degraded state, denoted by case (b). The test interval is again 4 weeks. Degraded State Probability 0,40 (a) 50% degradation detection probability 0,35 0,30 0,25 0,20 0,15 " (b) no degradation detecton probability 0,10 - - _ _ _ _ 4 8 _ . 12 16 20 maintenance interval [weeks] Fig. 16. Comparison of the degraded state probability of the auxiliary feedwater pump of plant I: In case (a), tests are capable of detecting a degraded state with a probability of 50%, whereas m case (b) tests are not capable of detecting any mode of degradation.

17. However, the difference between the failed state probabilities has increased due to the higher probability of degradation detection through tests, thereby decreasing the probability of the transiting from a degraded state to the failed state. Failed State Probability 0,30 0,25 0,20 0,15 0,10 0,05 0,00 — 4 (a) 50% degradation detection probability {b) no degradation detection probability 8 12 16 20 maintenance interval [weeks] Fig. Comparison of the failed state probability of the auxiliary feedwater pump of plant I: In case (a), tests are capable of detecting a degraded state with a probability of 50%, whereas in case (b) tests are not capable of detecting any mode of degradation.

Download PDF sample

Rated 4.76 of 5 – based on 45 votes