KR101984982B1 - Bearing commercial grade item dedication apparatus of nuclear power plant - Google Patents

Abstract

The present invention relates to a device for verifying a quality of a general standard bearing of a nuclear power plant. More specifically, the present invention relates to the device for verifying the quality of the general standard bearing of the nuclear power plant capable of verifying the quality of the bearing, and preventing damage due to collision with other structures and the like and the difficulties in repositioning caused when moved due to the external forces and the like by fixing a display part on an upper surface of an installation surface.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing apparatus for a nuclear power plant,

The present invention relates to an apparatus for verifying the quality of a bearing general standard of a nuclear power plant in a nuclear power generation technology field, and more particularly, to an apparatus for verifying the quality of a bearing, The present invention relates to a device for verifying quality of a general standard of a bearing of a nuclear power plant to prevent damage due to collision with other structures and the like.

In general, the Commercial Grade Item Dedication (CGID) is a safety standard for nuclear power plants which are designed, manufactured and supplied under the Nuclear Quality Assurance Program (10CFR50 App. B) A series of acceptance procedures to confirm that safety functions can be carried out smoothly on behalf of parts. It is divided into Technical Evaluation and Acceptance Process.

  The technology evaluation, which is the core of CGID, is designed to analyze facility characteristics, analyze essential characteristics of design, analyze reliable safety functions for operation environment, (FMEA), and so on. Most of the verification essential features derived from the technology evaluation are confirmed by one or more methods such as testing and inspection.

  The technical evaluation items and acceptance criteria for replacing generic products with Nuclear Safety Classes are determined by the evaluator's experience and proficiency. In particular, if there is no verification experience as a substitute item for a general standard product, it can not be guaranteed that it meets the appropriate standard. Determination of essential characteristics, measurement methods and measurement criteria for substitute product verification is an important attribute to substitute for safety items of nuclear power plant, which has a significant influence on safety of nuclear power plant.

Korean Patent Registration No. 10-1876632 (Aug. 20, 2018) discloses an apparatus for verifying the quality of general standard products for substituting with the safety grade of a nuclear power plant.

However, such a conventional quality verification apparatus has a problem that it is difficult to change direction or move to the display unit.

Korea Patent Registration No. 10-1876632 (2018.07.09.) 'Method and Apparatus for Verifying the Quality of General-Specified Capacitors for Substitution with Safety Class of Nuclear Power Plant' Korea Patent Registration No. 10-1750477 (June 27, 2017) 'Bearing Roundness Inspection Device'

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for verifying the quality of a bearing, And to provide a device for verifying quality of a bearing general standard product of a nuclear power plant for preventing breakage due to collision with other structures and the like.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides an information processing apparatus including an identification unit (1310) for collecting information on a manufacturer and a model name of the verification target part from identifier information added to the verification target part; A receiving unit (1320) for receiving verification essential characteristic information and conformance confirmation reference information of a bearing corresponding to the manufacturer and model name from the verification information database (1360), wherein the verification essential characteristic information and the conformance confirmation reference information The receiving unit 1320, which is received for physical characteristics and performance characteristics, respectively; A display unit (1330) for displaying verification essential characteristic information and compatibility verification standard information on the physical characteristics; An input unit 1350 for receiving confirmation of acceptance of physical characteristics from a verification subject; And a verification unit (1340) for determining whether to pass the performance characteristic of the verification target component based on the verification essential characteristic information and the compatibility verification standard information for the performance characteristic, The movement preventing unit 100 further includes a fixing plate extending outward from both sides of the display unit 1330 so as to prevent the display unit 1330 from being fixed to the mounting surface, 110); A pressing plate 120 which is brought into close contact with the mounting surface so as to face the fixing plate 110; And a pressing means 130 for pressing the pressing plate 120 from the fixing plate 110. The pressing means 130 is fixed to the press plate 120 at a lower portion thereof, (131); A pressure plate 132 housed inside the casing 131; A pressure bar 133 whose lower portion is connected to the pressure plate 132 and whose upper portion passes through the fixed plate 110; Is supported inside the casing (131) so as to be positioned below the pressure plate (132) and supports the pressure plate (132) from the inner bottom of the casing (131) while contracting and relaxing due to vibration from the outside A spring 134 for buffering the fluid; A cover 135 blocking the upper portion of the casing 131 and forming a hollow 135a through which the pressure bar 133 passes; And adjusting the pressure of the pressure bar 133 so that the pressure plate 133 is brought into close contact with the mounting surface of the fixing plate 110 while pushing the pressure bar 133 downward, And a lever (136). The apparatus for verifying quality of a bearing general standard product of a nuclear power plant is provided.

According to the present invention, quality verification can be performed so that the same verification result can be obtained regardless of the evaluator's experience and proficiency.

In addition, there is an effect that the direction can be changed and moved smoothly with respect to the display unit.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a flowchart of a method for verifying the quality of a general standard product of a bearing of a nuclear power plant according to the present invention.
2 is a detailed flowchart of the physical property verification step of FIG.
FIG. 3 is a block diagram showing a configuration of a bearing general general product quality verifying apparatus of a nuclear power plant according to the present invention.
FIG. 4 is a front view showing a state where a movement prevention unit is provided in a bearing general general product quality verification apparatus of a nuclear power plant according to the present invention.
5 is a partially enlarged cross-sectional view showing the movement preventing portion in FIG.
And
6 is a partially enlarged cross-sectional view showing the cap in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is intended to evaluate whether a generic standard product can be replaced with a safety grade of a nuclear power plant. Such an evaluation methodology may include definitions of items, technical assessments (equipment safety functions, FMEA, equipment validation evaluation), design mandatory characteristics, acceptance judgment mandatory features, inspection and test procedures. Each item included in the methodology can be evaluated and databaseized sequentially at each step. Technical evaluation, design essential characteristics and acceptance criteria include one or more evaluation items. In particular, the essential characteristics may include data from design documents, manufacturer information, and related standard information, and the test and test items may consist of one or more test items to assess conformance to the acceptance criteria taken from the design essential characteristics.

The present inventors have recognized that the verification quality and evaluation effectiveness of the replacement product are determined based on the determination of evaluation factors such as item identification, physical shape, performance characteristics, and essential characteristics with respect to general standard products to be used as safety items for nuclear power plants. Therefore, it is necessary to prepare a standard for acceptance and acceptance criteria for each attribute, to recognize that the same verification result should be obtained separately from the evaluator's experience and proficiency, to identify the identification method, physical shape measurement method , Design characteristic derivation method, required design characteristics and acceptance criteria.

Identification information is provided for substitution as a safety item for a general standard product. The method includes collecting a manufacturer, a model name, and the like associated with at least one item. One or more unique identification information about the manufacturer, the model name, and data as essential characteristics. One or more identified Properties may be stored in the database. Identifier (ID) information may be added to the product and / or packaging box based on the identification information and data. The physical attributes of one or more shape information and the dimensional data including the attributes may be documented and recorded in a test and inspection record, and may be database.

In the evaluation of the safety function for replacing the general standard product with the safety grade item, the bearing to be used for the nuclear safety grade equipment is installed in the power supply device of Class 1E equipment in normal operation, abnormal operation and accident condition Whether or not it performs properly can be verified as a safety function through the evaluation of the function of at least one of the criteria and items, such as the final safety assessment report and design basis data. The bearing can be understood as including the outer and inner rings and rolling elements.

In the analysis of the failure mode considering the safety function of the bearing, it is possible to evaluate the essential properties of the bearing by classifying and analyzing the failure mode according to the failure cause of the bearing.

In evaluating the bearing device verification, it is recommended that Alternative Item, except Like-for-Like Item, be replaced with Mild Environment and Harsh Environment in order to substitute general standard product with safety grade item. (EQ) evaluation, considering seismic verification (SQ) evaluation considering one or more of bearing design and installation conditions.

The design essential characteristics of bearings can be classified into identification information, physical characteristics, and performance characteristics, and identification information identifies one or more attributes such as manufacturer and model name. The physical characteristics can be checked from the product manual and drawings, such as the outline and dimensional data of the product. The properties such as abrasion due to friction and temperature rise can be confirmed with respect to performance characteristics.

In the identification determination of the bearing, it is possible to display a passing criterion which can be specifically determined so that one or more manufacturers and model names can be confirmed. The acceptance of the physical property is indicated by one or more pass criteria information so that the CFSI can be confirmed by visual inspection, and one or more dimension information reference values can be displayed so that the dimension inspection can be performed. Acceptance criteria for performance characteristics can indicate acceptance criteria information for essential characteristics derived from failure mode impact analysis and design required characteristics to enable testing and inspection.

Next, identification information confirmation and visual inspection procedures derived from the essential characteristic acceptance criteria can be performed. One or more procedures may be specified and indicated, including appropriate measurement equipment for verification of physical characteristics (shape, dimensions) and acceptance criteria confirmation method. In addition, one or more test procedures, such as common applications, test procedures, etc., can be defined and indicated for essential characteristics derived from the performance characteristics.

Hereinafter, with reference to FIG. 1, a method for verifying quality of a bearing general standard product of a nuclear power plant according to the present invention will be described in more detail.

As shown in FIG. 1, the quality verification method according to the present invention may first collect information on the manufacturer and model name of the verification target part from the identifier information added to the verification target part (step 910). Here, the identifier information is added to the verification target part or the packaging box of the part in the form of RFID tag, for example, and information about the manufacturer and the model name included in the RFID tag can be collected using the RFID reader. Alternatively, it may be added in the form of a bar code or QR code, and may be collected through a bar code reader or a QR code reader, or an application. However, the form of adding and collecting the identifier information is not limited to the example described above, and any form for adding information can be applied.

Thereafter, verification validity characteristic information and conformity confirmation criteria information of the bearing corresponding to the manufacturer and model name identified previously from the verification information database may be received (step 920). Verification essential feature information and conformance verification reference information can be received for physical and performance characteristics, respectively, regarding shape and dimensions. The verification information database is installed in the power supply of the first class (Class 1E) equipment in normal operation, abnormal operation and accident condition for a specific one of a plurality of bearings classified by the manufacturer and model name, , Which may include abrasion due to friction, temperature rise, etc., and the conformance criteria of the characteristics may be stored as data for each individual model. In addition, information on the shape and dimensions of the bearings provided by the manufacturer of the individual bearings for confirming the physical characteristics of the bearings, the appropriate measurement equipment, and information on the acceptance criteria confirmation method can be stored as data.

Upon receipt of the verification essential characteristic information and the conformance verification reference information corresponding to the manufacturer and model name of the component to be verified, first the verification essential property information and the conformance verification reference information for the physical property are displayed, and from the verifier, (Step 930). As shown in FIG. 2, in the physical property verification step, the shape of the bearing described in the product manual provided by the manufacturer of the bearing corresponding to the identified manufacturer and the model name, The equipment and acceptance criteria confirmation method may be displayed on the display (step 931). Thus, regardless of the proficiency level of the verifier, it is possible to determine whether the physical characteristics of the verification target component are acceptable or not through the correct criteria and measurement method. Thereafter, by receiving a verification acceptance confirmation indicating that the verification target component meets the conformity verification criterion of the physical characteristic (Step 933), the verification device can verify the physical characteristics of the verification target component.

Thereafter, a performance characteristic verification step (step 940) may be performed to determine whether to pass the performance characteristics of the verification target component based on the verification essential characteristic information and the conformance verification reference information for the performance characteristic. In the performance verification step, properties such as wear due to friction and temperature rise can be confirmed.

Therefore, regardless of the proficiency level of the verifier, it is possible to obtain a value for the performance characteristic of the bearing through an accurate reference and correct measurement method, thereby determining that the performance characteristic of the verification target component is acceptable.

Referring to FIG. 3, the apparatus for verifying quality of a bearing general standard product of a nuclear power plant according to the present invention will be described in detail.

3, a quality verification apparatus (hereinafter referred to as a " quality verification apparatus ") for a bearing general general product of a nuclear power plant according to the present invention includes an identification unit 1310, a reception unit 1320, a display unit 1330, An input unit 1340, and an input unit 1350. The verification information database 1360 may be included in the quality verification apparatus or may be installed separately to transmit / receive data to / from the quality verification apparatus through a wired or wireless network.

The identification unit 1310 may be configured to collect information on the manufacturer and the model name of the verification target component from the identifier information added to the verification target component, and the receiving unit 1320 may acquire, from the verification information database 1360, And the verification essential characteristic information of the bearing corresponding to the model name and the conformity confirmation reference information. Herein, the verification essential characteristic information and the conformance verification standard information can be received for the physical characteristic and the performance characteristic relating to the shape and the dimension, respectively.

The display unit 1330 may display verification essential characteristic information and conformance verification reference information for the physical characteristics so that the verification requester can recognize the information. The input unit 1350 can receive confirmation of acceptance of physical characteristics from the verifier. The verifier 1340 verifies the performance characteristics of the verification target component based on the verification essential characteristic information and the conformance verification reference information for the performance characteristic. You can decide whether to pass or not.

Here, the quality verification device verifies whether the bearings to be used in the stability class equipment of the nuclear power plant are installed in the power supply unit of the first class (Class 1E) equipment under normal operation, abnormal operation and accident condition, .

On the other hand, the display unit 1330 further displays the shape and dimensions of the bearing described in the product manual provided by the manufacturer of the bearing corresponding to the manufacturer and the model name, the appropriate measuring equipment, and the acceptance criteria confirmation method And the input unit 1350 may further input a verification acceptance confirmation indicating that the verification target part satisfies the conformity verification criterion of the physical characteristic from the verification person.

The verifying unit 1340 verifies the attributes such as abrasion due to friction and the temperature rise and the like when the verification target component is within the range of the conformance verification standard received from the verification information database 1360, It can be determined that the performance characteristic of the target part is acceptable. Here, the display unit 1330 may display the verification essential characteristics, the measurement method, and the conditions, and the input unit 1350 may receive a value according to the measurement method and condition from the verifier and transmit the value to the verification unit 1340 .

The quality verification apparatus according to the present invention further includes a movement prevention unit 100 for fixing the display unit 1330 to the installation target surface as shown in FIGS.

The movement preventing portion 100 stably supports the display portion 1330 from the floor surface of the room, the inside and the outside, the installation target surface including the separate structure, etc., and prevents the display portion 1330 from moving due to an external force or the like do.

That is, the movement preventive unit 100 prevents the difficulty of repositioning, which may occur due to an external force or the like, that may be generated while moving from the position where the display unit 1330 is initially installed, while preventing breakage or the like caused by collision with other structures or the like.

The movement preventing portion 100 includes a fixing plate 110 extending outward from both sides of the display portion 1330, a pressing plate 120 which is in close contact with the mounting surface so as to face the fixing plate 110, And a pressing means 130 for pressing the pressing member 120.

The fixing plate 110 has a rectangular plate shape and is fixed to both sides of the display portion 1330.

The compression plate 120 may be made of silicone, rubber, or the like, and has a semispherical shape protruding upward, and is pressed against the installation target surface when the compression plate 120 is pressed downward.

The pressurizing means 130 has a casing 131 which is fixed to the compression plate 120 at the bottom and opens at the top, a pressure plate 132 which is received inside the casing 131, a lower portion which is connected to the pressure plate 132, A pressure bar 133 passing through the fixing plate 110 and a pressure plate 132. The pressure plate 132 is supported from the inner bottom of the casing 131 while being received inside the casing 131 to be positioned below the pressure plate 132, A cover 135 for blocking the upper portion of the casing 131 and forming a hollow 135a through which the pressure bar 133 passes, and a pressure bar (not shown) And an adjusting lever 136 for pressing the pressing bar 133 downward so that the pressing plate 120 is brought into close contact with the mounting surface.

The casing 131 has a cylindrical shape in which an upper portion is opened, and protects the spring 134 received from the outside from the outside while allowing the spring 134 to smoothly contract and relax.

The casing 131 may be connected to the compression plate 120 while a connection bar 137 is provided at a lower portion thereof.

The connection bar 137 has a cylindrical shape and a lower portion thereof is integrally formed with the compression plate 120.

The upper portion of the connection bar 137 may be detachably coupled to the lower portion of the casing 131.

For example, the casing 131 is formed with a coupling groove 131a on the lower surface thereof. The coupling bar 137 is formed with a coupling groove 131a while a flange 137a coupled to the coupling bar 137 with the coupling groove 131a is formed Can be removably coupled.

This is because the casing 131 is made of a material having a certain strength different from the compression plate 120 so that the connection bar 137 can be stably installed on the casing 131, So that replacement can be smoothly performed.

The casing (131) is threaded on the upper outer circumferential surface, the cover (135) is opened on the lower side, and threaded on the inner circumferential surface and screwed to the outside of the casing (131).

The lid 135 is removed from the casing 131 and the pressing plate 132 and the spring 134 are pulled out to remove the foreign substances and the like introduced into the casing 131 and to check the spring 134 So that the replacement operation can be performed.

The pressure plate 132 is received inside the casing 131 so as to be positioned on the upper side of the spring 134 and is formed integrally with the pressure bar 133.

The control lever 136 has a cylindrical shape with upper and lower openings, and is rotatably fixed to the fixing plate 110 by a bearing or the like.

The adjusting lever 136 is formed with a thread on the inner circumferential surface thereof. The pressing bar 133 is screwed to the inside of the adjusting lever 136 while being threaded on the outer circumferential surface thereof.

The control lever 136 causes the pressure plate 132 to move up and down together with the pressure bar 133 to press or release the spring 134 in accordance with the rotation.

The spring 134 presses the casing 131 against the pressing plate 120 while pressing the pressing plate 120 against the mounting surface while pressing the casing 131 to release the pressing force, So that it can be easily detached from the installation target surface.

In addition, the spring 134 supports the pressure plate 132 from the inner bottom of the casing 131, and is capable of buffering the shock while being contracted and relaxed by external pressure.

The hollow 135a has a width enough to allow the pressure bar 133 to pass therethrough while being extended in the left and right direction to prevent contact with the pressure bar 133 when the display portion 1330 is rotated in the left- desirable.

The casing 131 is formed at one side with a guide hole 131b extending from the upper side to the lower side and communicating with the inside.

The pressure plate 132 has a guide bar 132a protruding outward from the casing 131 through a guide hole 131b.

The guide plate 132a is moved up and down along the guide hole 531b when the spring 134 is contracted or relaxed so that the inside of the casing 131 can be stably raised and lowered.

The movement preventing portion 100 further includes a protection cap 140 whose lower portion is opened and fitted to the outside of the upper portion of the control lever 136.

The protective cap 140 may be made of rubber or the like and is coupled to the upper portion of the control lever 136 to protect the control lever 136 from external force while preventing the rotation of the control lever 136.

Accordingly, the movement preventing unit 100 can prevent the display unit 1330 from being difficult to reposition, which may be caused by moving due to an external force or the like, by fixing the display unit 1330 to the installation target surface, Breakage or the like can be prevented.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

1310: Identification part 1320:
1330: Display unit 1340: Verification unit
1350: input unit 1360: verification information database
100: Support part 110: Fixing plate
120: compression plate 130: pressing means
131: casing 132: pressure plate
133: pressure bar 134: spring
135: cover 136: control lever
137: connection bar 140: protective cap

Claims (1)

An identification unit (1310) for collecting information on a manufacturer and a model name of the verification target part from identifier information added to the verification target part;
A receiving unit (1320) for receiving verification essential characteristic information and conformance confirmation reference information of a bearing corresponding to the manufacturer and model name from the verification information database (1360), wherein the verification essential characteristic information and the conformance confirmation reference information The receiving unit 1320, which is received for physical characteristics and performance characteristics, respectively;
A display unit (1330) for displaying verification essential characteristic information and compatibility verification standard information on the physical characteristics;
An input unit 1350 for receiving confirmation of acceptance of physical characteristics from a verification subject; And
And a verification unit (1340) for determining whether to pass the performance characteristics of the verification target component based on the verification essential characteristic information and the conformance verification reference information with respect to the performance characteristic, in a device for verifying quality of a bearing general standard product of a nuclear power plant ,
Further comprising a movement preventing portion (100) for fixing the display portion (1330) to a mounting surface,
The movement prevention part (100)
A fixing plate 110 extending outward from both sides of the display unit 1330;
A pressing plate 120 which is brought into close contact with the mounting surface so as to face the fixing plate 110; And
And pressing means (130) for pressing the pressing plate (120) from the fixing plate (110)
The pressing means (130)
And a connection bar 137 formed integrally with the compression plate 120 at a lower portion thereof, A casing 131 in which an upper portion is opened;
A pressure plate 132 housed inside the casing 131;
A pressure bar 133 whose lower portion is connected to the pressure plate 132 and whose upper portion passes through the fixed plate 110;
Is supported inside the casing (131) so as to be positioned below the pressure plate (132) and supports the pressure plate (132) from the inner bottom of the casing (131) while contracting and relaxing due to vibration from the outside A spring 134 for buffering the fluid;
A cover 135 which is screwed to the outside of the upper portion of the casing 131 to block the upper portion of the casing 131 and has a hollow 135a through which the pressure bar 133 passes; And
And an adjusting lever 136 for pressing the pressing bar 133 downward so that the pressing plate 120 is brought into close contact with the mounting surface,
The movement prevention part (100)
And a protection cap 140 for preventing the rotation of the control lever 136 while protecting the control lever 136 from an external force while being coupled to an upper portion of the control lever 136. [ ,
The casing (131)
A coupling groove 131a is formed in the lower surface, and a guide hole 131b extending from the upper portion to the lower portion and communicating with the inner portion is formed on one side,
The pressure plate (132)
A guide bar 132a protruding outward from the casing 131 through the guide hole 131b is formed on one side,
The connection bar (137)
A flange 137a coupled to the coupling groove 131a at an upper portion thereof and being detachably coupled to the coupling groove 131a,
The control lever 136 is a lever-
The pressing plate 133 is rotatably fixed to the fixing plate 110 and the pressing bar 133 is screwed up and down so that the pressing plate 133 is moved up and down together with the pressing bar 133 And the spring (134) is pressed or released.

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