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IEEE Std 382-2019 pdf download

IEEE Std 382-2019 pdf download.IEEE Standard for Qualification of Safety-Related Actuators for Nuclear Power Generating Stations and Other Nuclear Facilities.
Documentation shall be provided as described in this standard.
5. Identification of the generic actuator group
5.1 Generic actuator group identification
A generic actuator group from which sample actuators are selected for type test shall be established and identified. Consideration shall be given to details including but not limited to design. materials, manufacturing processes, limiting stresses, deformation, deflections, operating principles, and design margin.
Generic actuator group designs shall have the following common characteristics:
a) Identical type actuator (electromechanical, pneumatic, hydraulic, mechanical, electrical, or any combination)
b) Functionally and geometrically similar structural arrangements with the principal differences being overall size, weight, and ratings
c) Similar materials of construction
d) Similar actuator mounting configuration and output drive method
e) Similar mounting of functional accessories
0 Similar internal control devices
5.2 Selection of actuator units for type testing
Due to the variation in types, sizes, and configurations of actuators, it is not practical for this standard to establish a fixed number of actuators to be tested in order to establish qualification. It is also impractical to require all actuators to be tested.
All actuators within a generic group are qualified by analysis provided an appropriate number of units are type tested and a comparison by analysis is made between tested units and others. The number of units to be tested shall be based on an evaluation of the variations in physical and performance parameters that exist within the generic group; for example, thrust, torque, power, speed, materials, pressure, weight, dimension, inertia, and seismic momenta For non-direct acting actuators, such as motor actuators or scotch-yoke actuators, the actuator with the worst (i.e., lowest) gearbox efficiency should be one of the units selected.
NOTE—The relationship between generic actuator group and the specific application of an actuator is given in Part I. 7.3.
Annex A describes a suggested procedure for selection of test units.
6. Qualification testing of selected actuators in generic actuator group
6.1 Type test parameter values
6.1.1 Normal and abnormal service conditions
The service conditions for the equipment shall be specified. These conditions shall include the nominal values and their expected durations, as well as extreme values and their expected durations. Examples include, but arc not limited to, the following:
a) Ambient pressure and temperature
b) Relative humidity
C) Radiation environment
d) Seismic operating basis earthquake (OBE) and non-seismic vibration
e) Operating cycles
f) Thrust andior torque loading conditions
g) Condensation, chemical spray, and submergence
h) Electromagnetic compatibility (EMC)
6.1.2 Design basis event conditions
The postulated design basis event conditions including specified high-energy line break, loss-of-coolant accident, main steam line break, andlor seismic safe shutdown earthquake (SSE) events, during or after which the equipment is required to perform its safety function(s), shall be specified. Equipment shall be qualified for the duration of its operational performance requirement for each applicable design basis event condition. including any required post design basis event operability period.
6.1.3 Margin
If the equipment specification identifies qualification margins (see Annex D for the definition of margin), their values shall be stated. Otherwise margins, as required by IEC/IEEE 60780-323, shall be applied to service conditions to obtain parameter values.
6.2 Type test plan
A type test plan shall be prepared based on the requirements of this standard. The test plan shall contain the following information as a minimum:
a) Reference to this standard
b) Identification of the actuator(s) to be tested including the manufacturer, catalog identifications, and parts list and drawings for each actuator
c) Range of motive power source and control signal requirements, including quality of the actuating medium (such as cleanliness of an air supply or voltage ripple) that are critical to the proper functioning of the actuator.

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