IEEE 382-2019 pdf free download

IEEE 382-2019 pdf free download.IEEE Standard for Qualification of Safety-Related Actuators for Nuclear Power Generating Stations and Other Nuclear Facilities.
the actuator open and one with the actuator closed. The OBE sweeps in each axis may be followed by the SSE test in the same axis [see item c) and item d)1. The OBE sweeps may also provide resonance search data unless test table and fixtures adversely affect theresults.
c) For actuator SSE qualification for line mounted application, perform a single frequency test by exposing the actuator to a series of single frequency sine-beat tests at the one-third octave interval test frequencies indicated in Figure 1, or other enveloping levels specified by the user. For hard rock sites, the SSE single frequency tests shall be extended up to 64 Hz at the one-sixth octave interval test frequencies specified by the user (see IEEE Std 344 for further definitions and detailed descriptions of test methods). The excitation at each frequency shall be in the form of a continuous series of sine beats of 12—15 oscillations per beat for the duration required. The successive beats shall be phased so that any superposition of response motion are additive. At each test frequency the peak acceleration shall be the RIM value shown in Figure I or other enveloping levels specified by the user. The duration of each test shall be IS s minimum. If the operating cycle duration is greater than 15 s the vibration may be interrupted during a part of the cycle provided the open and close operation takes place during vibration at the specified level. Actuators whose openiclose cycle time is less than 5 s shall be cycled at least twice during the test at each frequency. Operate modulating actuators, under load, at 20% stroke. Apply motion at the same frequencies and accelerations in each of the three orthogonal axes separately or biaxially, in which case the test is to be performed both in phase and out of phase in each of the two orientations. See item d) for guidance in biaxial testing (a single frequency sinusoidal dwell test of 15 s duration at each frequency may be used in lieu of the sine-beat tests if desired).
d) For actuator SSE qualification for hard-mounted application, perform a multifrequency test by exposing the actuator to triaxial multifrequency test motion which, when analyzed for each axis, produces a test response spectrum (TRS) that envelopes the required response spectrum (RRS) shown in Figure 2, or other enveloping levels specified by the user. (see IEEE Std 344 for further definitions and detailed descriptions of test methods). Alternatively, a biaxial multifrequency test may be performed with one horizontal axis combined with the vertical axis and then repeated with the orthogonal horizontal axis combined with the vertical. Independent (nonphase coherent) multifrequency motions for the three axes are preferred. If phase-coherent motions are used the test shall be performed four times, that is, in each of the four horizontal directions (90° apart), each one combined in phase with the vertical. The duration of each test shall be 30 s minimum. If the operating cycle duration is greater than 30 s. IEEE 382-2019 pdf free download.