ML22271A644
| ML22271A644 | |
| Person / Time | |
|---|---|
| Site: | Orano USA |
| Issue date: | 07/01/2010 |
| From: | AREVA |
| To: | Division of Fuel Management |
| Garcia-Santos N | |
| Shared Package | |
| ML22271A128 | List:
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| References | |
| A33010, EPID L-2022-DOT-0007 | |
| Download: ML22271A644 (54) | |
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A Document type t AC - CALCULATION NOTE 54 AREVA Class Number of pages N Number of appendices 0 Document Title FCC3 containers for fresh fuel assemblies Data for the fatigue strength analysis of the lifting boxes and upper shell NON-PROPRIETARY VERSION Short title FCC3 CONTAINERS FOR FRESH FUEL ASSEMBLIES DATA FOR THE FATIGUE STRENGTH ANALYSIS B 2009-06-23 A 2008-12-30 A
This d cument was released in ace rdance with ANP Quality Management System requi ements.
The docu ent has been electronically signed ANP elease Dept NEEL-FS Date 23/06/2009 Si n Rev Date Author Checked by Modifications / Observations Status Approved by Contract:
Project F2 NEEL-F 2008 DC 11 ?EN File code No EOTP:
61 E.S048 Subdivision INTERNAL IDENTIFICATION NUMBER
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 2 / 54 REVISIONS IND STATUS PARAGRAPH SCOPE OF THE REVISION REV DATE A 2008-12-30 Original version.
Validation as per email B 2009-06-23 of 07/01/2009 from
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 3 / 54
SUMMARY
This document is part of the work carried out in answer to the comments made by the DGSNR. These comments subject the FCC3 transport container to, inter alia, the demonstration that "the securing and handling systems have adequate resistance to fatigue"
[translation].
This is the first stage in updating the existing FCC3 container model to determine the maximum stresses occurring under static loads (self weight, stacking of empty or full containers, tie-down), or quasi-static loads (lifting), and loads due to accelerations during transport.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 4 / 54 TABLE OF CONTENTS
- 0. REFERENCES 8
- 1. INTRODUCTION 9
- 2. PARTS OF THE CONTAINER COVERED BY THE ANALYSIS 10
- 3. CONFIGURATIONS TO BE ANALYSED AND RELATED LOADS 11 3.1. Steady-state conditions 11 3.2. Transport configurations 12 3.3. Elementary and combined loads 12
- 4. RETAINED TIE-DOWN CONFIGURATIONS 13
- 5. FINITE ELEMENT MODELLING 14 5.1. Existing models 14 5.2. Model modification description 14 5.3. Material and masses 14 5.4. Meshing 15 5.5. Boundary conditions and loads 16
- 6. RESULTS 22
- 7. CONCLUSION AND RECOMMENDATIONS 23
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 5 / 54 LIST OF TABLES Table 1: Elementary loads 24 Table 2: Level 1 combined loads 25 Table 3 : Description of the boundary conditions based on the type of applied load 26 Table 4 : Maximum equivalent von Mises stress on the upper half shell per tie-down type and for the applied loads 27
A N° NEEL-F 2008 DC 117EN AREVA REV. B PAGE 6 I 54 LIST OF FIGURES Figure 1: FCC3 Container - General view 28 Figure 2: FCC3 Container - Upper half shell 29 Figure 3: FCC3 Container - Lower half shell 30 Figure 4: Detail of the analysed welded joints , extract from reference [7] drawing) 31 Figure 5: Tie-down configuration - Case 1 32 Figure 6: Tie-down configuration - Case 2 33 Figure 7: Tie-down configuration - Case 3 34 Figure 8: Tie-down configuration - Case 4 35 Figure 9: Tie-down configuration - Case 5 36 Figure 10: Modelling of a quarter container 37 Figure 11: Modelling of a half container - General view 38 Figure 12: Modelling of a half container- Meshing 39 Figure 13: Thickness distribution 40 Figure 14: Three-container stacking scheme during transport 41 Figure 15: Boundary conditions - Elementary load cases 1 and 2 (table 1, 3 rd column) 42 Figure 16: Boundary conditions - Elementary load cases 3 to 7 (table 1, 3 rd column) 43 Figure 17: Boundary conditions - Elementary load cases 8 and 9 (table 1, 3 rd column) 44 Figure 18: Boundary conditions - Elementary load cases 10 and 11 (table 1, 3 rd column) 45 Figure 19: Boundary conditions - Elementary load case 12 (table 1, 3rd column) 46 Figure 20: Boundary conditions - Elementary load case 13 (table 1, 3rd column) 47 Figure 21: Boundary conditions - Elementary load case 14 (table 1, 3rd column) 48 Figure 22: Boundary conditions - Elementary load case 15 (table 1, 3rd column) 49 Figure 23: Boundary conditions - Type 1 tie-down configuration (elastic connections) -
Elementary load case 12 to 14, (table 1, 3rd column) 50 Figure 24: Boundary conditions - Type 2 tie-down configuration (elastic connections) -
Elementary load case 12 to 14, (table 1, 3rd column) 51
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 7 / 54 Figure 25: Boundary conditions - Type 3 tie-down configuration (elastic connections) -
Elementary load case 12 to 14, (table 1, 3rd column) 52 Figure 26: Boundary conditions - Type 4 tie-down configuration (elastic connections) -
Elementary load case 12 to 14, (table 1, 3rd column) 53 Figure 27: Boundary conditions - Type 5 tie-down configuration (elastic connections) -
Elementary load case 12 to 14, (table 1, 3rd column) 54
A N° NEEL-F 2008 DC 117EN AREVA REV. B PAGE 8 / 54
- 0. REFERENCES
[1] Lettre DGSNR/SD1/N°0880/2005 Transport de matieres radioactives - Emballages FCC3 et FCC4 charges d'assemblages ou de crayons combustibles neufs pour REP - Modeles de colis F/347/IF-96 et F/348/IF Complements de justification.
[Transport of radioactive materials - Containers FCC3 and FCC4 loaded with fresh fuel assemblies or fuel rods for PWR. Package models F/347/IF96 and F/348/IF96 -
Additional justification].
[2] Calculation note FF DC 04807/B FCC containers - Complementary data for fatigue calculation.
[3] Drawing TFX 30 FAG 229 K 0100/F sheet 1/1 Container for 2 UO 2 fuel assemblies - 12 ft model - 17 x 17 - Closed assembly -
General assembly.
[4] Drawing TFX 30 FAG 229 K 0102/1 sheets 1 to 2/2 Container for 2 UO 2 fuel assemblies - 12 ft model - 17 x 17 - Package assembly.
[5] Drawing TFX 30 FAG 229 K 0105/1 sheets 1 to 4/4 Container for 2 UO 2 fuel assemblies - 12 ft model - 17 x 17 - Lower shell - Assembly.
[6] Drawing TFX 30 FAG 229 K 0579 0106/C planche 1/1 Container for 2 UO 2 fuel assemblies - 12 ft model - 17 x 17 - Lower shell - Detail: pad frame.
[7] Drawing TFX 30 FAG 229 K 0110/1 sheets 1 to 2/2 Container for 2 UO 2 fuel assemblies - 12 ft model - 17 x 17 - Upper shell - Assembly.
[8] Calculation note NVPM DC 99.0663 E0/B TFX - Container for 12' fuel assemblies - Mechanical verification of lifting points.
[9] Calculation note PVED DC 03.0222 E0/A FFXE - Container for 12 ft fresh fuel assemblies - Stacking behaviour.
[10] AFCEN RCC-MR - Design and Construction Rules for Mechanical Components of Nuclear Installations Section 1 - Subsection B - Class 1 Components,
- Subsection Z - Appendix A3 - Characteristics of Materials.
Edition 2007.
[11] SYSTUS programme, version 2008.1 (10.1)
Qualification file: note NFPMR DC 68/E Note de synthese de qualification de SYSTUS integrant les outils SYS*, le bloc fissure et le module NUKE
[SYSTUS qualification synthesis note, including the SYS* tools, the crack block, and the NUKE module].
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 9 I 54
- 1. INTRODUCTION This document is part of the response to the remark made by the DGSN R (reference [1]
email) which subjects the certification of the FCC3 transport containers to, inter alia, the demonstration that "the securing and handling systems have adequate resistance to fatigue"
[translation].
It contains the first step in the approach which consists in updating the existing FCC3 model and determining the maximum stress level based on static loads (self weight, stacking of empty or full containers, tie-down), or quasi static loads (lifting), and the transport acceleration loads, in accordance with the client's specification (reference [2]).
A N° NEEL-F 2008 DC 117EN AREVA REV. B PAGE 10/54
- 2. PARTS OF THE CONTAINER COVERED BY THE ANALYSIS The FCC3 container is described by reference drawings [3] to [7]; figures 1 to 3 show a general view and detailed views of the upper and lower half shells.
The parts of the container which have a relevant function in tie-down or handling are the following:
- the lifting boxes,
- the upper half shell, on which stand the lifting boxes (including the end plates and the flanges for coupling with the lower half shell),
- the upper half shell circumferential stiffeners (circular angle beams-),
- the welds between the boxes, the stiffeners, and the upper half shell.
The welds in question are fillet welds, identified as follows on reference drawing [7] and figure 4:
- welds between each lifting box and the two reinforcing angle sections on both sides; there are 4 welding beads per box, with a * *
- apothem,
- welds between the extreme edges of each lifting box and the upper half shell, in the longitudinal direction; there are 2 beads per box, with a apothem,
- welds positioned on the circumferential angle section reinforcing the upper half shell in the paracentral position (those which are not in contact with the lifting boxes).
which tie the upper half shell to the two sides of each circumferential reinforcing angle section positioned at the end of the lifting box. The length of each discontinuous welding bead is apart from the -whose length is increased to (figure 4 ).
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 11 / 54
- 3. CONFIGURATIONS TO BE ANALYSED AND RELATED LOADS All the configurations to be analysed are described in reference document [2]: a distinction is made between static situations (or steady-state conditions), and transport situations, which engender vibrations on the container due to variable acceleration levels transmitted by the deck supporting the container.
3.1. Steady-state conditions Static conditions are all conditions excluding those occurring during transport (see § 3.2).
This includes lifting during handling, which can be considered a quasi-static operating condition due to the low level of associated velocity and acceleration.
Reference [2] note identifies the following situations, which cover a series of similar but less penalising situations from the engendered stress point of view:
- the case of an empty, discharged container, or zero-stress conditions: this is a fictitious status neglecting stresses due to the self weight of the container. It enables us to maximise the cyclic variation of the stresses compared to the other statuses. This configuration also includes all handling operations by a forklift truck, which do not concern the container tie-down devices identified in § 2,
- empty storage: in this configuration an empty container standing on the ground may have 1 or 2 other empty containers of the same type stacked on top,
- lifting: in this configuration, a full container is lifted by a lifting beam with 4 vertical strands (see reference note [8]); a dynamic amplification factor of 1.15 is applied: this is a bounding configuration for lifting an empty container or a container upper shell alone,
- stacking of full containers: this configuration corresponds to two full containers standing on a deck with a third full container placed in the middle position on both of them, resting on two lifting boxes of each container, the upper container being tied down. This configuration is bounding for the following situations:
stacking of three untied full containers, stacking of four empty containers (standing two by two vertically, in contact between them), the two upper containers being tied, stacking of four empty containers (two by two vertically with contact between them), the two upper containers not being tied,
- tying-down of full containers: in this configuration two full containers are standing on a deck, tied together by straps (see § 4). This is a bounding configuration for tying-down two empty containers or only one, full or empty, container.
It is not planned to tie-down containers superposed on two levels separately (3 or 4 in all): if they are stacked, only the upper level container(s) are tied-down; if the containers are not stacked, only the containers standing on the deck are tied-down directly.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 12 / 54 3.2. Transport configurations In addition to the steady loading conditions described in § 3.1, the transport configurations are associated to variable dynamic loads, which are represented by distributed accelerations of given levels along each direction.
There are three transport configurations: road, rail and sea.
Dynamic loads are applied in a static equivalent way by considering the mass of the full container without taking into account the damping effect exerted by the anti-vibration pads on the assembly suspended inside the container, and represented by the mass of the cradle, the frame, the doors and the two assemblies.
Reference [2] note gives the criteria for establishing the amplitude of acceleration per direction and the combination of accelerations according to the directions and the type of transport.
In the present study, unit accelerations are considered separately in each direction (vertical, transversal and longitudinal).
3.3. Elementary and combined loads Based on the classification set out in the previous paragraphs, each type of load is described by one or several elementary components (single action per origin and per direction).
According to the type of action and the direction, different boundary conditions can be applied to the elementary calculation.
Table 1 contains the detailed list of the actions, in sequence from 1 to 15 (third column of table 1). These actions are grouped, based on different applicable boundary conditions, into eight calculation cases (first column in table 1).
Elementary actions are then combined to create the static loads described in § 3.1 (cases 16 to 18 in table 2, column two) or partial combinations for further use, to define transport configurations (case 19 in table 2, column two).
This document is aimed to define the unit transport load cases in each direction (vertical, transversal, or longitudinal). The combination of the unit loads with appropriate acceleration amplitudes will be matter of a further document.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 13/54
- 4. RETAINED TIE-DOWN CONFIGURATIONS Tie-down is realized by pre-stressing the tie-down straps, positioned either on the lifting boxes or on the upper half shell of the container.
Reference [2] note identifies five enveloping configurations for transport, described by figures 5 to 9, taken from such a document. It should be noted that these figures represent the simplified case of two containers standing one on the other. Actually, either 3 or 4 containers are set on two levels or 1 or 2 containers are set on a single level. For all these cases, the figures are representative of the total number of straps per tie-down configuration and of the position of each strap.
The following cases are analysed:
- case 1 (figure 5): container with 2 straps positioned close to the lifting box "internal" hole,
- case 2 (figure 6): container with 2 straps placed on the upper half shell close to the lifting box "internal" stiffener,
- case 3 (figure 7): container with 2 straps placed on the upper half shell between the lifting box "internal" stiffener and the paracentral one,
- case 4 (figure 8): this is a container with 2 straps positioned as follows:
two on the upper half shell close to the lifting box "internal" stiffener (as in case 2),
two on the upper half shell, close to the paracentral stiffener,
- case 5 (figure 9): container with 3 straps positioned as follows:
two on the upper half shell, between the lifting box "internal" stiffener and the paracentral one (as in case 3),
one on the upper half shell, at the centre of the container (in the longitudinal direction).
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 14 / 54
- 5. FINITE ELEMENT MODELLING 5.1. Existing models The FCC3 containers have been studied in the past as described in notes [8] and [9]
concerning the lifting conditions and the regulatory stacking tests respectively.
A spatial shell finite element model was used for these studies. It represents either one quarter or one half of the container, depending on the type of study carried out.
5.2. Model modification description The current FCC3 container version is shown on drawings [3] to [7]. Figures 1 to 3, extracted from these drawings, show the actual structure of the container.
Compared to the configuration shown in [8] and [9] notes, modifications exist on the lifting box welding beads, as well as the addition of reinforcing gusset plates on the lower half shell.
As the lower part is not directly involved in the current study, these gusset plates have been ignored.
On the other hand, insofar as the welding beads concern the upper half shell connection with the lifting boxes and the angle stiffeners, and that their fatigue strength is the main purpose of this study, the existing finite element model was corrected and made consistent with the current configuration.
Figure 4 shows the detail of the main welds to be analysed. Their characteristics are described in § 2.
5.3. Material and masses The containers are made of - c a r b o n steel.
Mechanical properties are taken from A3 and The characteristics at ambient temperature are as follows:
The total mass of an empty FCC3 container is taken - that of the container loaded with two 12 ft assemblies is 4385 kg.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 15/54 5.4. Meshing Figure 10 represents the model of one quarter of the container, used in the previous analysis (references [8] and [9]).
The load set to be used for fatigue analysis is complex and impossible to be correctly represented using this partial model.
At least one-half of the container has to be represented, with different sets of boundary conditions adapted to the applied loads in order to cover all the required configurations.
The model was therefore doubled in size in order to represent one half of a FCC3 container in the longitudinal direction, as shown in figures 11 and 12.
The global system of axes is centred on the section plane with the X axis parallel to the longitudinal direction, the Y axis transversal and the Z axis vertical and positive towards the top.
The mesh, which consists of linear shell finite elements, is compatible with the SYSTUS computer programme (reference [11]).
Figure 13 shows the distribution of the plate and shell thicknesses on the container.
Figure 14 shows the arrangement of three containers in the tie-down and transport configuration. However, this is not true modelling, which was limited to only one container.
In the modelled configuration, the container is either in the left lower position and receives the loads due to the container standing on it and its tie-down system, or it is tied-down with its counterpart on the lower level.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 16/54 5.5. Boundary conditions and loads Due to the complexity of the applied load set, and taking into account the symmetries, eight sets of boundary conditions have been used with three of them varying according to the applied tie-down conditions.
The actions of the tie-down straps were modelled by elastic connections specific to each tie-down case.
Table 3 gives the description of the applied conditions, according to type. Figures 15 to 22 show the boundary conditions for cases 1 to 8 in table 1 (column 1) and are supplemented by figures 23 to 27 for the elastic connections, variable in number and position according to the 5 tie-down cases analysed.
The tie-down load (reference [2]) is always described by the equivalent of a vertical force and a transversal horizontal force of each one, representing pre-stressing, and by a longitudinal horizontal force of 1/2 of the previous value, to take into account the effect of friction. These values are conservative and constitute an increase of 15% over the maximum tension achieved during testing with 5-ton straps.
In order to validate the assumptions concerning the boundary conditions, the three following conditions have to be complied with for all tie-down configurations in actual operation:
- adjoining containers are in transversal contact at the flanges joining the half shells by placing at least three stops between them (this condition is generally achieved by using parallelepiped wood inserts),
- each container standing on a deck (road trailer, wagon or flat for maritime transport) butts transversally against its pads, excluding the installing clearances, in order to avoid the container sliding during transport,
- each container standing on a deck (road trailer, wagon or flat for maritime transport) butts longitudinally against its pads, excluding the installing clearances, in order to avoid the container sliding during transport, The last two conditions have to be confirmed for all transporters and in all tie-down configurations in order to protect the containers against any risk of sliding, which would lead to unacceptable excessive stress and affect the stability of the tie-down arrangement.
The following paragraphs describe load cases 1 to 8 in table 1. These include identification of the elementary load components 1 to 15, all the boundary conditions applicable and the reference to the corresponding figures.
The signs chosen for the loading components described in table 1 maximise the stresses.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 17 / 54 5.5.1. Calculation case 1 This configuration includes the load components for the storage of two empty containers above the one being studied.
The elementary loads identified in table 1 (3 rd column) are as follows:
- component 1: the empty self-weight of the modelled container,
- component 2: the empty self-weight of the 2 superposed containers, The boundary conditions are independent from the tie-down configuration; they are shown by figure 15; the applicable conditions are as follows (table 3):
- symmetry on the YZ plane,
- vertical bearing on the pads,
- numerical stabilisation of the calculation (transversal blocking on Y of on node of the model).
5.5.2. Calculation case 2 This configuration covers the load components displaying a double symmetry relative to the model section planes and to contact between the two containers standing on a deck.
The elementary loads identified in table 1 (3 rd column) are as follows:
- component 3: self-weight of the full modelled container or unit vertical downward transport acceleration,
- component 5: vertical force due to tie-down on a superposed half container, -
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 18/54 6: force due to direct tie-down on the modelled container, vertical 7: force due to direct tie-down of the modelled container, transversal The boundary conditions are independent from the tie-down configuration; they are shown by figure 16; the applicable conditions are as follows (table 3):
- symmetry on plane YZ,
- symmetry on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck; it represents the contact through the mobile restraints between the two containers fastened together,
- vertical bearing on the pads,
- transversal restraints on the modelled pad which is on the side opposite the locking of the tie-down strap.
5.5.3. Calculation case 3 This configuration includes the load components with symmetry relative to the section plane of the model and anti-symmetry relative to the contact plane between two containers bearing on a deck.
The elementary loads identified in table 1 (3 rd column) are as follows:
- component 8: vertical action of the transversal component of stacking (overturn moment) of a superposed half container, The boundary conditions are independent from the tie-down configuration; they are shown by figure 17; the applicable conditions are as follows (table 3):
- symmetry on plane YZ,
- anti-symmetry on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck, which represent contact through the mobile restraints between the two containers fastened together,
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 19/54
- vertical bearing on the pads,
- transversal restraints on the modelled pad which is on the same side as the tie-down strap locking point.
5.5.4. Calculation case 4 This includes the loading components displaying anti-symmetry relative to the model sectional plane and symmetry relative to the contact plane between the two containers standing on the deck.
The elementary loads identified in table 1 (3 rd column) are as follows:
- componen * * * *
- container, 11: direct tie-down force applied on the modelled container, longitudinal The boundary conditions are independent from the tie-down case; they are shown on figure
- 18. The applicable conditions are as follows (table 3):
- anti-symmetry conditions on the YZ plane,
- symmetry conditions on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck, which represent the contact through the mobile restraints between the two containers fastened together,
- vertical bearing on the pads,
- longitudinal restraints on the two modelled pads.
5.5.5. Calculation case 5 This configuration includes a load component with symmetry on the model sectional plane and anti-symmetry on the contact plane between the two containers standing on the deck.
The action of the tie-down straps on the container secured at floor level is taken into account.
The elementary loading identified in table 1 (3 rd column) is as follows:
- component 12: transversal transport action;
A N° NEEL-F 2008 DC 117EN AREVA REV. B PAGE 20 / 54 The boundary conditions depend on the tie-down case and are shown in figure 19 (rigid connections) and 23 to 27 (elastic tie-down connections, depending on the case examined);
the applicable conditions are as follows (table 3):
- symmetry on plane YZ,
- anti-symmetry on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck, which represent the contact through the mobile restraints between the two containers tied-down together,
- vertical bearing on the pads,
- transversal restraints on the modelled pad which is on the same side as the tie-down strap locking point,
- elastic connections on the tie-down strap(s), applied to the contact surface between the strap(s) and the container (lifting box or upper half shell).
5.5.6. Calculation case 6 This configuration includes a loading component with anti-symmetry relative to the model sectional plane and symmetry relative to the contact plane between the containers bearing on the flat surface. The action of the straps on the container secured at the floor level is taken into account.
The elementary load identified in table 1 (3 rd column) is as follows:
- component 13: longitudinal transport action.
The boundary conditions depend on the tie-down case and are shown by figures 20 (rigid connections) and 23 to 27 (elastic connections, function of the case considered); the applicable conditions are as follows (table 3):
- anti-symmetry on plane YZ,
- symmetry on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck, which represent the contact through the mobile restraints between the two containers fastened together,
- vertical bearing on the pads,
- longitudinal restraints on the two modelled pads,
- elastic connections on the tie-down strap(s), applied to the contact surface between the tie-down strap(s) and container (lifting box or upper half shell).
5.5.7. Calculation case 7 This configuration includes a loading component with symmetry relative to the model sectional plane and to the contact plane between the two containers bearing on the deck.
The action of the tie-down straps on the container secured at floor level is taken into account.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 21 / 54 The elementary load identified in table 1 (3 rd column) is as follows:
- component 14: upward vertical transport action The boundary conditions depend on the tie-down case and are shown by figures 21 (rigid connections) and 23 to 27 (elastic tie-down connections, function of the case considered);
the applicable conditions are as follows (table 3):
- symmetry on plane YZ,
- symmetry on the plane parallel to XZ, where the modelled container is in contact with the other container bearing on the deck, which represent the contact through the mobile restraints between the two containers fastened together,
- elastic connections on the tie-down strap(s), applied to the contact surface between the strap(s) and container (lifting box or upper half shell).
5.5.8. Calculation case 8 This configuration includes a loading component specific to the lifting configuration The elementary load identified in table 1 (3 rd column) is as follows:
- component 15: the vertical force of gravity multiplied by the coefficient of dynamic amplification - t h e force is due to the distributed weight of the modelled full container.
This effort can only be constant (static calculation assumption).
The boundary conditions are independent from the tie-down case (non tied-down container) and are shown on figure 22. The applicable conditions are as follows (table 3):
- symmetry on plane YZ,
- vertical bearing on the upper nodes of the lifting boxes circular holes,
- numerical stabilisation of the calculation (transversal blocking on Y of one of the nodes on the lifting box identified in the previous line).
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 22 / 54
- 6. RESULTS The SYSTUS calculations are executed separately for each of the five tie-down cases studied. Each one is a linear elastic calculation.
The results of the elementary calculations and the static combinations (cases 1 to 19 on tables 1 and 2) are summarised in table 4.
The parameter chosen to represent the effect of each loading component, elementary or combined, is the maximum von Mises equivalent stress on the plate and shell elements representing the upper half of the container (lifting box, upper half shell, plate ends, flanges and angle stiffeners).
This maximum stress on the above referenced assembly is computed in middle skin (membrane component) and upper and lower skins (membrane plus bending).
The values in bold on table 4 identify the skin on which the membrane plus bending stress is maximum for a given load, and the bold underlined values identify the maximum stress among all the five tie-down configurations for each load case.
The results of the calculations in the present document will be used to obtain the dynamic loads and cyclic loads, and to perform the fatigue analysis in a later report.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 23 / 54
- 7. CONCLUSION AND RECOMMENDATIONS This document is part of the work to demonstrate the fatigue strength capability of the tie-down and handling systems used on the FCC3 container. It constitutes the first stage of the approach, consisting in updating the existing FCC3 container model and determining the maximum stress based on static loading (self-weight, stacking of empty and full containers, tie-down), or quasi static loads (lifting) , and the transport acceleration loads.
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 24 / 54 TABLE 1: ELEMENTARY LOADS PROPRIETARY TABLE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 25 / 54 TABLE 2: LEVEL 1 COMBINED LOADS PROPRIETARY TABLE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 26 / 54 TABLE 3: DESCRIPTION OF THE BOUNDARY CONDITIONS BASED ON THE TYPE OF APPLIED LOAD PROPRIETARY TABLE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 27 / 54 TABLE 4: MAXIMUM EQUIVALENT VON MISES STRESS ON THE UPPER HALF SHELL PER TIE-DOWN TYPE AND FOR THE APPLIED LOADS PROPRIETARY TABLE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 28 / 54 FIGURE 1: FCC3 CONTAINER - GENERAL VIEW PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 29 / 54 FIGURE 2: FCC3 CONTAINER- UPPER HALF SHELL PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 30 / 54 FIGURE 3: FCC3 CONTAINER- LOWER HALF SHELL PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 31 / 54 FIGURE 4: DETAIL OF THE ANALYSED WELDED JOINTS EXTRACT FROM REFERENCE [7] DRAWING)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN REV. B PAGE 32 / 54 AREVA FIGURE 5: TIE-DOWN CONFIGURATION-CASE 1 r& X+
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A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 34 / 54 FIGURE 7: TIE-DOWN CONFIGURATION-CASE 3
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A N° NEEL-F 2008 DC 11 ?EN REV. B PAGE 36 / 54 AREVA FIGURE 9: TIE-DOWN CONFIGURATION - CASE 5
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I GAUCH E I yI CAS N" ECHELLE 1/25 FORMAT AJ NOTE N ' FF DC 04807 Ri! vision B PAGE 6(11
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 37 / 54 FIGURE 10: MODELLING OF A QUARTER CONTAINER PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 38 / 54 FIGURE 11: MODELLING OF A HALF CONTAINER - GENERAL VIEW PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 39 / 54 FIGURE 12: MODELLING OF A HALF CONTAINER- MESHING PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 40 / 54 FIGURE 13: THICKNESS DISTRIBUTION PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 41 / 54 FIGURE 14: THREE-CONTAINER STACKING SCHEME DURING TRANSPORT PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 42 / 54 FIGURE 15: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASES 1 AND 2 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 43 / 54 FIGURE 16: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASES 3 TO 7 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 44 / 54 FIGURE 17: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASES 8 AND 9 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 45 / 54 FIGURE 18: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASES 10 AND 11 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 46 / 54 FIGURE 19: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASE 12 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 47 / 54 FIGURE 20: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASE 13 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 48 / 54 FIGURE 21: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASE 14 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 49 / 54 FIGURE 22: BOUNDARY CONDITIONS - ELEMENTARY LOAD CASE 15 (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 50 / 54 FIGURE 23: BOUNDARY CONDITIONS - TYPE 1 TIE-DOWN CONFIGURATION (ELASTIC CONNECTIONS) - ELEMENTARY LOAD CASE 12 TO 14, (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 51 / 54 FIGURE 24: BOUNDARY CONDITIONS -TYPE 2 TIE-DOWN CONFIGURATION (ELASTIC CONNECTIONS) - ELEMENTARY LOAD CASE 12 TO 14, (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 52 / 54 FIGURE 25: BOUNDARY CONDITIONS -TYPE 3 TIE-DOWN CONFIGURATION (ELASTIC CONNECTIONS) - ELEMENTARY LOAD CASE 12 TO 14, (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 53 / 54 FIGURE 26: BOUNDARY CONDITIONS -TYPE 4 TIE-DOWN CONFIGURATION (ELASTIC CONNECTIONS) - ELEMENTARY LOAD CASE 12 TO 14, (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE
A N° NEEL-F 2008 DC 11 ?EN AREVA REV. B PAGE 54 / 54 FIGURE 27: BOUNDARY CONDITIONS -TYPE 5 TIE-DOWN CONFIGURATION (ELASTIC CONNECTIONS) - ELEMENTARY LOAD CASE 12 TO 14, (TABLE 1, 3RD COLUMN)
PROPRIETARY FIGURE