The technical requirements of repairs for steel general purpose containers
Some standard content:
National Standard of the People's Republic of China
Technical requirements of repairsfor steel general purpose containers1 Subject content and applicable scope
GB/T 12418--:90
This standard specifies the technical requirements for the repair of steel general purpose containers, including the concept, inspection, damage category, repair measures, material, container status and part code.
This standard applies to steel general purpose containers for multimodal transport. All repairs of this type of containers shall comply with this standard. The repair requirements for various special containers and air freight containers will be specified separately. 2 Reference standards
GB 1413
GB1835
GB1836
GB1992
GB 3218
GB 3219
GB 5338
3 Terminology
External dimensions and rated loads of containers
Technical requirements for corner fittings of containers
Container marking codes
Terms and terms of container registration
5Technical conditions and test methods for type D general purpose containersTechnical conditions and test methods for type ICC general purpose containersTechnical conditions and test methods for type 1AA, 1A and 1AX general purpose containers3.1 Maintenance
Work performed to maintain the good condition and normal use of containers 3.2 Repair
Replacement of container structure, parts or accessories, local patching and shape correction in order to restore the good condition of the container and extend its service life. The repair measures are shown in Appendix C (Supplement). 3.3 Maintenance and repair A general term for container maintenance and repair work. 3.4 Refurbishment
Treatment of the inner and outer surfaces of the container, renewal of coatings and markings, 3.5 Inspection
Checking the integrity and applicability of the container, and proposing a plan for repair or continued use based on this. 3.6 Testing
Evaluation of the performance of the container according to the technical conditions and test methods listed in the established standards or specifications. 3.Production inspection
inspection and testing
Approved by the State Administration of Standards and Regulations on July 21, 1990
Implemented on April 1, 1991
A general term for inspection and testing.
3.8Certification
GB/T7241890
The procedure for container products to be certified to meet the requirements of standards and specifications through inspection and certification and for the issuance of certificates by relevant authorities. 3.9Continuous inspection rulesAcEP—upproved continuous examinationprogrammeThe relevant provisions for the re-inspection of containers that have been inspected and certified and have reached a certain period of service. Inspection and repair requirements for general steel containers4.1 Inspection requirements
4.1.1 Inspection location
Refers to the wharf, container yard and repair site designated by the container owner or user. 4.1.2 Inspection cycle
The interval from the time the container is manufactured to the first inspection shall not exceed 5 years. The subsequent inspection interval shall be 30 months. 4.1.3 Inspection personnel
refers to personnel who are familiar with the structure, type, construction and repair technology of the container and can correctly judge the potential factors that endanger safe transportation. 4.1.4 Inspection route
Start from the front end of the container body, and check the left side, rear end, right side, front part, inside the box and bottom in the order of inspection. 4.1.5 Pre-repair inspection content
For the components and parts to be inspected, please refer to Appendix A (supplement). 4.1.6 Temporary inspection
For the upper side beams, lower side beams, main columns, end beams and other important load-bearing parts of the dyeing and loading box, when major repairs are required, the box should be temporarily inspected.
4.1.7 Inspection Records
For each container inspected, there should be a record of the inspection results, and it should be kept at least until the next inspection date. The codes used in the records are shown in Appendix B (Supplement).
After the container is inspected, a steel stamp should be stamped on the safety identification card to indicate the next inspection date. 4.2 Basic requirements for container repairs
The container owner should appoint qualified inspection personnel to be responsible for implementing the ACFP repair plan and decide whether the container should be stopped, continued to be used or sent for repair.
4.2.1For containers sent for repair, the repair unit and the container repair unit should promptly prepare the inspection records and relevant technical documents of the container's condition before, during and after the repair.
4.2.2 Container repair shops should be equipped with necessary inspection, testing and repair equipment and tools. 4.2.3 Various professionals and operators responsible for container repair should have the knowledge and operating skills required by their profession and hold a certificate of qualification.
4.3 Inspection requirements for container repair
4.3.1 After the container is repaired, the dimensions of each part should not exceed the wheel flange formed by the outer surface of the corner fittings. The external dimensions, limit deviation and diagonal dimensions of the container body should comply with the dimensional requirements specified in GB1413. 4.3.2 For containers with fork slots, grab handles and neck slots, the dimensions of these parts should comply with the relevant provisions of the relevant national standards for container technical conditions and test methods.
4.4 Quality requirements for container repair
4.4.1 The geometric dimensions and mechanical properties of materials such as steel, wood and metal connectors that need to be replaced during container repair should be consistent with or higher than the original container. For the repair materials of the canal, see Appendix D (reference). 4.4.2 The materials of the accessories used in container repair shall be approved by the ship inspection. 4.4.3 The materials of the inner and outer layers of the repaired parts shall be compatible, and the color of the outer coating shall be coordinated with the surrounding parts as much as possible. GB/T12418-90
4.4.4 The repair welds of the container shall be smooth, uniform, flat, accurate in size, with sufficient fusion depth and no defects such as sand holes, pores, and undercuts. 4.4.5 The connection, hook and connection method of the replaced bottom plate shall be consistent with the original box. 4.4.6 The various marking plates of the box body shall be complete, firmly connected, with clear handwriting, and the installation position shall meet the requirements. 4.4.7 The special markings and patterns required by the owner on the box body shall be constructed according to the owner's requirements. 4.4.8 The strength of each repaired part of the container shall not be lower than the original design strength of the part. 4.4.9 After the container is repaired, it shall be inspected in detail and the specified strength test shall be carried out according to the requirements of the quality supervision personnel. It should comply with the requirements of the "National Standards for Technical Conditions and Test Methods of Containers and Container Inspection Specifications". 4.4.10 All repaired containers should be subjected to wind tightness tests in accordance with relevant regulations and meet the requirements. 4.4.11 After the container is repaired, all parts of the container should still have the function of preventing smuggling. 5 Repair methods for steel general-purpose containers
5.1 End structure
5.1.1 Corner columns
5.1.1.1 When the front and rear corner columns have any of the following damages, no matter how large the range is, they need to be repaired: the depth of local bending, dents and arches in any part is greater than 20mm: b.
The same corner column has dents or arches greater than 15mm in two or more places; any part of the rear corner column has damage that affects the opening of the door, the positioning of the piano and the wind and rain tightness; c
There are damages, cracks and other damages that affect the integrity of the structure: 5.1.1.2 Repair method
For general damage, cold operation method is used for correction. If hot operation method is really needed, it should be limited to the damaged part and the temperature should not be higher than
650℃
If the above method cannot meet the requirements, the damaged part should be cut off and a filling plate of appropriate size should be welded by butt welding method; each corner column has a maximum of 2 filling plates, and each filling plate is not less than 150mm along its length. The edge of the filling plate cannot be located at the corner of the corner column section. When the distance between the filling plate and the lower upper plane of the top and bottom corner pieces is less than 300mm, it should be extended to the connection of the corresponding corner piece. The minimum distance between the filling plates at the same corner position of the column section is 150, and the filling plates at different corner positions cannot be welded at the same cross section.
The requirements for the position of the filling plate along the length direction of the corner column and in the cross section are listed in Figures 1 to 2, e. When the corner column is seriously damaged, but the adjacent upper and lower side beams and upper and lower end beams are intact, the corner column should be replaced: d. For minor cracks, cuts, holes and other damages on the corner column, the welding method is adopted. When the seam is large, it should be negotiated with the container owner and repaired after obtaining the owner's consent. GB/T
12418--90
--is a feasible method
13~is an unfeasible method
Figure 1 Repair method for corner column section
The bamboo of the gift board
GB/I12418---90bzxz.net
The board repair cannot be extended to
The non-broken and salvaged part
The repair is still
A~F is a feasible method
A~E" is an unfeasible method
Figure 2 Repair method for corner outer board
The broken part is repaired
The repair board cannot be
more than the commercial part
5. 1.2 Upper beam, lower beam, door cap and threshold GB/I12418-90
5.1.2.1 The upper beam, lower beam, door cap and threshold need to be repaired when there is damage: a. The local bending, denting and arching of the upper beam and door cap are greater than 25mm, and the depth of the above damage within 250mm from the corner is less than 13mm
b. Any part of the upper beam and door cap top reinforcement plate is perforated, cracked due to the misalignment of the lifting lock head, or the peripheral bending, denting and arching caused by other reasons The depth of damage is greater than 25mm; c. The depth of local bending, sinking and arching of the door sill and lower beam is greater than 40mm, and the depth of the above damage within 250mm from the angle piece is greater than 13mm.
d. The depth of local bending, sinking and arching of the flange at the bottom of the lower beam is greater than 40mm, and the depth of the same damage in other parts is greater than 25mm;
e. The door sill and door sill have damage that affects the normal opening, positioning and wind and rain tightness of the box door. There are damages, cracks and other damages that affect the integrity of the structure. 5. 1. 2. 2 Repair method
a. Use the repair method in item a of 5.1.1.2: If the above method does not meet the requirements, the damaged part should be cut off and a filling plate of appropriate size should be welded in a butt-joint manner. The minimum length of each filling plate should be 150mm. The distance between the filling plate welding on each beam and the adjacent weld or the inner edge of the adjacent angle piece should be greater than 150mm. Otherwise, the filling plate size should be lengthened to extend to the corresponding weld or angle piece connection. If the crossbeam is seriously damaged, but the other connected beams and columns are intact, the entire beam should be replaced: Minor cracks, cuts and holes on the beam are generally repaired by welding. When the cracks are large, it is advisable to negotiate with the owner and obtain the owner's consent before repairing.
5.1.3 End wall
5.1.3.1 The corrugated end wall needs to be repaired when any of the following damage occurs: local bending, denting and arching damage, which is greater than 25mm at the trough and greater than 40mm at the crest; b.
In the corresponding parts of the end plate and the door plate, the length inside the box is reduced by 50mm due to bending, denting or arching damage; b.
The compression depth of each wave on at least 6 consecutive peaks or troughs is greater than 25mm; c.
Broken arches, cracks and cuts on any part of the end plate. 5.1.3.2 Repair method
For general damage, use cold working method to level out the depressions and dents; a
For cracks or breaks within the single wave range, flatten them and then perform repair welding; D. For damage of a larger area, the damaged part should be cut off and welded with an overlapped plate or a butt welded plate; d.
For large-area serious damage or when the repair method cannot meet the requirements, it is advisable to replace the entire end plate or the entire group of end plates: 5.2 Box top structure
5.2.1 Top dyeing
5.2.1. 1 Repairs shall be carried out when any of the following damages occur: E: The depth of local bending, depression and arching of the top beam is greater than 40mm or the external dimensions of the container exceed the scope specified in GB1413; b. Damage, cracks, cuts in any part of the top beam, loosening and loss of the end parts of the beam, etc. Other damages that affect the integrity of the structure occur on the top beam. 5.2.1.2 Repair method
Use the repair method in item a of 5.1.1.2!
Use the welding method for holes and cracks on the top beam: If the above method does not meet the requirements, a new top beam should be replaced. 5.2.2 Flat top plate
GB/T 12418-90
5.2.2.1 Damage, cracks, cuts, etc. on the flat top plate, regardless of their scope, should be repaired. 5.2.2.2 Repair method
a. In general, the damaged part is leveled by cold working method and then repaired by welding; b. If the above method does not meet the requirements, a repair plate should be welded from the top surface in an overlapping manner. If the damaged part is located at the top beam, the top beam should be removed before repairing, and then installed after the repair; C. For serious damage to the top plate, the whole top plate or the whole set of top plates should be replaced. 5.2.3 Enclosed top plate
5.2.3.1 When one of the following damages occurs on the enclosed corrugated top plate, repair is required: local bending, depression, arching and other damages in any direction have a depth of 4mm at the crest and 25mm at the trough;
From the corrugated top plate, the compression depth of each corrugation in at least 6 consecutive corrugations is greater than 25mm. 5.2.3.2 Repair method
For local damage to the corrugated top, the cold working method is used to flatten it and then perform repair welding: h.
When the damaged part exceeds the wave range, a short-lap or butt-jointed patch plate or filling plate should be attached! When the above method does not meet the requirements, the whole corrugated top plate or the whole set of corrugated top plates should be replaced. 5.3 Bottom structure
5.3.1 Bottom beam, vertical beam, goose groove cross beam and side beam 5.3.1.1 When any of the following damage occurs in the above beams, repair is required: E: For the bending, denting and arching of the pressed beam, for the I-beam of the pressed beam and the rolled I-beam, the flange of the upper part is disconnected from the connection of the bottom of the box, and the size measured from the bend of the top flange is greater than 13mm; b. Breakage, cracks and cuts in any position of the pressed beam. 5.3.1.2 Repair method
8. Use the repair method a in 5.1.1.2. b. If the above method does not meet the requirements, the damaged part should be cut off and welded with a small and appropriate filling plate in a butt-welded manner, as shown in Figure 3. The minimum length of the filling plate is 150mm; the distance between the weld of the filling plate and the weld of the adjacent plate or the connection between the lower beam and the bottom beam should be greater than 150mm, otherwise the size of the filling plate should be increased to extend to the weld and the connection, as shown in Figure 3;: If the upper or lower part of the beam section is severely damaged along its entire length, the damaged part will be cut off along the entire length of the beam, and the lap beam will be welded in an overlap manner, and the minimum overlap size is 13mm, as shown in Figure 4; d. If the above method does not meet the requirements, a new beam should be replaced, and the repair method shown in Figure 5 is not allowed. For the maintenance method of the rolled beam, the repair should be carried out after consultation with the box owner and after the box owner's consent. e.
5.3.2 Fork groove bottom plate
Figure 3 Repair method
Figure 4 Repair method of bottom beam
Small anti-ban intestine
Figure is not full of fraud. Cut off the entire section to repair the bottom. The minimum damage is i.imm
5.3.2.1 Any part of the fork groove bottom plate has damage such as sag, sinking and arching, and the depth is more than 25mm, or there are holes and cracks in the part, which need to be repaired.
5. 3. 2. 2
Repair method,
Use the repair method in item a of 5.1.1.2, as shown in Figure 6; if the above method does not meet the use requirements, a new bottom plate should be replaced. 5.3.3 Gooseneck groove plate
12418-90
Figure 6·Repair method of groove
J patch plate
5.3.3.1. Any part of the top plate of the gooseneck groove with bending, dents and other damages exceeding the size and limit deviation of the gooseneck groove specified in GB5338 or the depth of the upward and downward arching is greater than 25mm, it is necessary to repair. 5.3.3.2 Use 5.1.1, 2 item a to consult the repair method 5.3.4 Bottom plate
5.3.4.1 The bottom plate includes the wooden bottom plate, connectors and door end guard plate. When the following damage occurs, it shall be repaired: a. The delamination, cracks and light leakage between the boards are enough to affect the loading and unloading operations; b. The board produces odors, contamination, microbial damage or stains that are harmful to the goods; c.
When the depth and range of the dents on the wooden bottom plate are large and the connectors are loose or lost, the repair conditions should be negotiated with the container owner and agreed by the container owner;
The height difference between the adjacent boards is greater than 6mm.
5.3.4.2 Repair method
GB/T12478-—90
For local damage in each strip of the wooden bottom board of the strip board structure, a new board should be partially replaced, but the length of the replaced strip board and the length of the original retained part should at least cover 4 bottom beams, the end of the strip board should be located at the upper flange of the bottom beam, and the ends of adjacent strip boards cannot be located at the upper cover edge of the same bottom beam;
Use the cold operation method to level the arched part of the guard plate, and use cleaning, air sweeping, water washing and detergent, steam cleaning, etc. according to the condition of the wooden board; d. Fill the light leaking parts with sealant:
For plywood, no matter how big the damaged area is, replace the whole board. For serious damage to a large area, replace the board.
5.4 Side structure
5.4.1 Upper beam
5.4.1.1 The upper beam needs to be repaired when any of the following damage occurs: 1. The depth of the bend formed by gradual deformation in any direction along the entire length of the beam is greater than 25mm, and the depth of the above damage within 250mm from the corner piece is greater than 13m;
b. Damage, cracks and other damage that affects the integrity of the structure. 5.4.1.2 Repair method
Remove the damaged part and weld it with a filler plate in a butt-joint manner, as shown in Figure 7; the length of the filler plate should be at least 150mm, and the spacing between the ends of the two filler plates on the same upper beam should be at least 150mm, or the distance between the corresponding welds should be greater than 150mm, otherwise the intermediate part should be cut off and replaced with one filler plate. When the distance between the end of the filler plate and the inner edge of the adjacent angle fitting is less than 300mm, it should be extended to the connection between the corresponding angle fitting and the beam. The spacing of the welds of the filler plates on the two upper beams of the same container along the length of the container is greater than 60mm. b. When the upper beam is seriously damaged and the part to be replaced exceeds 50% of the box length, the whole beam should be replaced. 5.4.2 Lower beam
5.4.2.1 The lower beam needs to be repaired when any of the following damages occur: a. The depth of damage such as small bending, denting and arching at any part of the lower flange of the beam cross section is greater than 40mm, and the depth of the above damage within 250mm from the angle piece is greater than 13mm. h.
The depth of damage such as bending, denting and arching at any part of the beam plate and upper flange is greater than 40mm: holes, cracks and cuts at any part of the beam: d.
Other damages that affect the integrity of the structure occur on the beam. 5.4.2.2 Repair method
Use the repair method in item a of 5.1.1.2: b.
For holes, cracks, etc., the whole beam should be leveled and welded after burning; cut off the damaged part and weld it to fill the plate in a butt-welding manner. Specific requirements are shown in Figure 8. The length of the filling plate should be at least 150mm. The distance between the ends of the two filling plates on the same lower beam should be at least 150mm or the distance between the adjacent welds should be greater than 150mm, otherwise the middle part should be cut off and replaced with a filling plate. When the distance between the end of the filling plate and the inner edge of the adjacent bottom angle piece is less than 300mLm, it should be extended to the connection between the corresponding angle piece and the beam. When the beam is severely damaged and the above method does not meet the requirements, a new beam should be replaced. The method of switching the complete section along the length of the beam is not allowed.
Generally, it should be at least
15t/mm
GB/T 12418
The minimum distance is
The minimum break
The wall is
A~: is an unbreakable method
A~C is a feasible method
Figure 7 The repair method of the upper side beam
The minimum distance is
Filling board
The distance between the side wall and the wall is
5.4.3 Side wall panel
1241890||tt ||Figure 8 Repair method for lower side frame
5.4.3.1 The corrugated side wall panel needs to be repaired when the following damage occurs: damage such as shoulder bending, denting and arching, the damage is greater than 40mm at the crest and greater than 25mm at the trough; a.
In the corresponding parts of the two side panels, the width of the box is reduced by 50mm due to bending, denting or arching. On at least 6 consecutive crests and troughs, the compression depth of each wave is greater than 25mmCracks should be leveled and repaired after burning; cut off the damaged part and weld it with a filling plate in a butt-welded manner. The specific requirements are shown in Figure 8. The length of the filling plate should be at least 150mm, and the distance between the ends of the two filling plates on the same lower beam should be at least 150mm or the distance between adjacent welds should be greater than 150mm, otherwise the middle part should be cut off and replaced with a filling plate. When the distance between the end of the filling plate and the inner edge of the adjacent bottom angle piece is less than 300mLm, it should be extended to the connection between the corresponding angle piece and the beam. When the beam is severely damaged and the above method does not meet the requirements, a new beam should be replaced. The method of switching the complete section along the length of the beam is not allowed.
Generally, it should be at least
15t/mm
GB/T 12418
The minimum distance is
The minimum break
The wall is
A~: is an unbreakable method
A~C is a feasible method
Figure 7 The repair method of the upper side beam
The minimum distance is
Filling board
The distance between the side wall and the wall is
5.4.3 Side wall panel
1241890||tt ||Figure 8 Repair method for lower side frame
5.4.3.1 The corrugated side wall panel needs to be repaired when the following damage occurs: damage such as shoulder bending, denting and arching, the damage is greater than 40mm at the crest and greater than 25mm at the trough; a.
In the corresponding parts of the two side panels, the width of the box is reduced by 50mm due to bending, denting or arching. On at least 6 consecutive crests and troughs, the compression depth of each wave is greater than 25mmCracks should be leveled and repaired after burning; cut off the damaged part and weld it with a filling plate in a butt-welded manner. The specific requirements are shown in Figure 8. The length of the filling plate should be at least 150mm, and the distance between the ends of the two filling plates on the same lower beam should be at least 150mm or the distance between adjacent welds should be greater than 150mm, otherwise the middle part should be cut off and replaced with a filling plate. When the distance between the end of the filling plate and the inner edge of the adjacent bottom angle piece is less than 300mLm, it should be extended to the connection between the corresponding angle piece and the beam. When the beam is severely damaged and the above method does not meet the requirements, a new beam should be replaced. The method of switching the complete section along the length of the beam is not allowed.
Generally, it should be at least
15t/mm
GB/T 12418
The minimum distance is
The minimum break
The wall is
A~: is an unbreakable method
A~C is a feasible method
Figure 7 The repair method of the upper side beam
The minimum distance is
Filling board
The distance between the side wall and the wall is
5.4.3 Side wall panel
1241890||tt ||Figure 8 Repair method for lower side frame
5.4.3.1 The corrugated side wall panel needs to be repaired when the following damage occurs: damage such as shoulder bending, denting and arching, the damage is greater than 40mm at the crest and greater than 25mm at the trough; a.
In the corresponding parts of the two side panels, the width of the box is reduced by 50mm due to bending, denting or arching. On at least 6 consecutive crests and troughs, the compression depth of each wave is greater than 25mm
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