Main and auxiliary separation operation method for pasting secondary shield of containment system

Abstract

The invention provides a main and auxiliary separation operation method for secondary shield pasting of an enclosure system, which divides the process steps of a secondary shield pasting project into a main process and an auxiliary process, the main process is operated by personnel with certificates, and the auxiliary process is operated by personnel without certificates, so that the personnel are reasonably distributed as much as possible. And meanwhile, the main process is reasonably divided into two operation sections, so that one person without license can meet the auxiliary requirements of the two main processes at the same time. According to the operation mode, the secondary shielding project period is shortened from 30 days to 20 days, and the daily secondary shielding installation number is increased by 30%. The standard operation mode provides theoretical guidance for secondary shielding engineering construction. Indexes needing to be completed every day are set according to the theory. And related abnormal condition explanations need to be provided for the grades which do not reach the installation indexes. And the abnormity in the construction process is separated out according to a standard operation mode, an abnormity database is established, and related solutions are formulated.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly to a main and auxiliary separation operation method for pasting a secondary shield of an enclosure system. Background Art

[0002] The insulating layer of the MARKⅢ thin-film type enclosure system is mainly composed of reinforced polyurethane foam. The main wall is 304L stainless steel with a thickness of 1.2 mm, and the secondary shield is a three-in-one diaphragm. The key construction stage of the enclosure system is the pasting of the secondary shield, including manual secondary shield pasting and automatic secondary shield pasting. The main function of the secondary shield is to ensure the tightness of the shielding layer and play a sealing role. Its structure is generally two layers of glass cloth with aluminum foil in the middle, which is a three-in-one diaphragm. Its types are divided into rigid secondary shield (RSB) and flexible secondary shield (FSB), as Figure 1 shown. During the process of pasting the secondary shield, the tightness of the secondary shield cannot be measured before the pasting work is completed. Therefore, in order to ensure its good tightness and avoid subsequent rework, the pasting process, steps and quality of manually pasting the secondary shield become the key in the pasting of the secondary shield and also the key in the construction of the enclosure system.

[0003] According to past experience, the operation process of manually pasting the secondary shield is divided into four steps: preparation before pasting, pasting operation, inspection and protection, and removal of protection tools. There is no clear boundary between each step, and there is no detailed operation procedure and management specification for mutual cooperation among operators. There is no sequence and no standard document as a guide during the pasting operation process. This leads to frequent quality problems in the pasting of the secondary shield and it is impossible to find the relevant responsible personnel. The operation efficiency of pasting the secondary shield is relatively low and there is a large room for improvement. There is also no clear operation division in terms of personnel division. The operations of each step are independent, and operators often cause waiting waste due to interference. There is no clear daily material quantity index and visualization standard for the secondary shield project, and the project progress depends entirely on the experience of on-site operators. This leads to disorderly on-site operations, chaotic operation methods, and anomalies and wastes during the operation process cannot be discovered and solved in time. In addition, the staff for pasting the secondary shield needs a certain level of certificate for the corresponding operation steps. However, in the past operation process, due to the shortage of certified personnel, some auxiliary personnel without job level certificates are needed to help. Due to the chaotic operation content, the operation content of certified personnel and uncertified personnel is confused, resulting in many quality problems of unqualified pasting of the secondary shield, and the subsequent rework pasting operation is more difficult. Some teams use all certified operators. Although this method reduces the quality problems, using certified personnel to complete some operation steps that can be completed by auxiliary personnel will result in a waste of high-skilled talents. In other words, without standard operation steps, the above two wastes will not disappear. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the present invention studies and analyzes the process of secondary shielding pasting operations, carefully sorts out and counts the operation steps of secondary shielding pasting, eliminates some unnecessary actions and steps, and at the same time differentiates effective operations and auxiliary operations according to the requirements of process documents (certified and uncertified). The secondary shielding pasting is systematically sorted out according to the method of separating main and auxiliary operations, and a new operation method is produced to improve the construction efficiency of the secondary shielding project and shorten the construction period of the MarkⅢ enclosure system.

[0005] To achieve the above object and other related objects, the present invention provides a method for separating main and auxiliary operations in secondary shielding pasting of an enclosure system, including the following steps:

[0006] S1. Sort out the process steps of the secondary shielding pasting project;

[0007] S2. Separate main and auxiliary operations, divide the process steps of the secondary shielding pasting project into main processes and auxiliary processes, and the main processes are operated by certified personnel, while the auxiliary processes are operated by uncertified personnel;

[0008] S3. Measure and count the time required for each process to complete the secondary shielding pasting project, and calculate the total duration of the main process and the auxiliary process respectively;

[0009] S4. According to the principle of rhythmic construction, determine the personnel combination and process allocation of main and auxiliary operations; the basic principle is that the main process is divided into at least two operation segments, and different operation segments are successively completed by different certified personnel; the difference in the working duration of different operation segments is within 5 minutes, and the working duration of each operation segment = the working duration of the auxiliary process × n ± △, where n is an integer and the value of △ is within 5 minutes.

[0010] Optionally, in step S1, the process steps of the secondary shielding pasting project include pre-pasting preparation work, pasting operation steps, and inspection and protection operation steps;

[0011] The pre-pasting preparation work includes taping the area to be operated, grinding and cleaning with a vacuum cleaner, measuring and marking lines, marking and registering FSB measurement information, pasting protective tape around, caulking, cutting FSB and ethylene film, and preparing a hot press plate and fixed angle iron; FSB represents flexible secondary shielding;

[0012] The pasting operation steps include installing fixed studs, installing hot press plate fixed angle iron, laying FSB pasting tape, cleaning, scraping glue and standing still to check for bubbles, tearing the edge tape of the boundary filler, pasting FSB, pasting FSB positioning tape, pasting ethylene film and rolling it flat, and pasting ethylene film positioning tape;

[0013] The inspection and protection operation steps include installing the hot press plate, fixing the hot press plate with square steel, connecting the air pipe and power cord, and opening the hot press plate adjustment box.

[0014] Optionally, in step S2, the auxiliary processes include applying glue and cutting the FSB ethylene film; the part excluding the auxiliary processes is the main process.

[0015] Optionally, in step S3, the total duration of the main process is 73 minutes, and the total duration of the auxiliary process is 17 minutes.

[0016] Optionally, in step S4, the main process is divided into two consecutive operation segments. The duration of the first operation segment is 37 minutes, and the duration of the second operation segment is 36 minutes; the duration of the auxiliary process is 17 minutes; n = 2.

[0017] Optionally, arrange 5 people to complete the two - pass shielding paste project, including 4 certified personnel and 1 uncertified personnel. Every two of the 4 certified personnel are divided into a group, including the first group and the second group. Different groups perform different operation segments, and the personnel within the group perform the same operation segment with a time sequence, so that the uncertified personnel can continuously assist two group members; 1 uncertified personnel cooperates with the two groups of certified personnel, and it takes 37 minutes to complete two complete shielding paste projects.

[0018] Optionally, the first operation segment of the main process includes: taping the area to be operated, sanding and cleaning with a vacuum cleaner, measuring and marking lines, marking and registering FSB measurement information, pasting the surrounding protection tape, preparing the hot press plate and fixing angle iron, installing fixing studs, laying the FSB paste tape;

[0019] The second operation segment comes after the first operation segment and includes cleaning, scraping glue and standing still to check for bubbles, tearing the edge tape of the boundary filler, pasting the FSB, pasting the FSB positioning tape, pasting the ethylene film and rolling it flat, pasting the ethylene film positioning tape, installing the hot press plate, fixing the hot press plate with square steel, connecting the air pipe and power cord, and opening the hot press plate adjustment box;

[0020] The auxiliary process is carried out after marking and registering the FSB measurement information and includes applying glue, cutting the FSB and ethylene film.

[0021] As described above, the present invention provides a main and auxiliary separation operation method for secondary shielding pasting of an enclosure system. This operation method divides the process steps of the secondary shielding pasting project into main processes and auxiliary processes. The main processes are carried out by certified personnel, and the auxiliary processes are carried out by uncertified personnel to reasonably allocate personnel as much as possible. At the same time, the main processes are reasonably divided into 2 operation segments, so that an uncertified person can simultaneously meet the auxiliary requirements of two main processes. Guided by the "main and auxiliary operation separation" and "rhythmization" operation theories of lean production, the present invention provides a high-efficiency construction method for the MarkⅢ enclosure system. This operation mode shortens the secondary shielding project cycle from 30 days to 20 days, and increases the daily secondary shielding installation quantity by 30%. This standard operation mode provides theoretical guidance for the construction of the secondary shielding project. Based on this theoretical guidance, the indicators to be completed daily are set. For the number of files that do not reach the installation indicators, relevant explanations of abnormal situations need to be provided. Abnormalities in the construction process are analyzed according to the standard operation mode, an abnormal database is established and relevant solutions are formulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shows a schematic structural diagram of the secondary shielding in the prior art.

[0023] Figure 2 Shows a schematic diagram of the operation process of Embodiment 1 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, number, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0026] Embodiment 1

[0027] This embodiment provides a main and auxiliary separation operation method for secondary shielding pasting of an enclosure system, including the following steps:

[0028] S1. Sort out the process steps of the secondary shielding pasting project.

[0029] A detailed process of secondary shielding pasting is carried out, including tape pasting, sanding and vacuum cleaning of the work area, measuring and marking, marking and recording FSB (flexible secondary shielding) measurement information, pasting protective tape around the perimeter, gluing, cutting FSB and vinyl film, preparing hot press plates and fixing angle irons;

[0030] The pasting operation steps include installing fixing studs, installing hot press plate fixing angle irons, laying FSB pasting tape, cleaning, scraping glue, standing to check for bubbles, tearing off the edge tape of the boundary filler (JF), pasting FSB, pasting FSB positioning tape, pasting vinyl film and rolling it flat, and pasting vinyl film positioning tape;

[0031] The inspection and protection operation steps include installing the hot press plate, fixing the hot press plate with square steel, connecting the air pipe and power cord, and opening the hot press plate adjustment box.

[0032] S2. Separate the main and auxiliary operations. Divide the process steps of the secondary shielding pasting project into the main process and the auxiliary process. The main process is performed by certified personnel, and the auxiliary process is performed by uncertified personnel, so as to reasonably allocate personnel as much as possible.

[0033] Due to process requirements, the steps of a licensed operation must be performed strictly in sequence, and there is no parallel operation. Unlicensed operations can be determined as auxiliary operations based on actual operations.

[0034] The main processes that must be performed by certified personnel include: applying masking tape, sanding, measuring and marking, marking FSB length and width information, applying masking tape, preparing heat press plate, laying glue, applying vinyl film, installing heat press plate, and connecting power cord.

[0035] Among them, the auxiliary processes that can be performed by unlicensed workers include cutting FSB, vinyl film and gluing. According to actual operations, cutting FSB, vinyl film and gluing can be performed in parallel during the process of licensed operations, and it is more economical and reasonable to arrange unlicensed auxiliary personnel to perform the operations. Therefore, the above steps are auxiliary operations.

[0036] S3. Calculate and count the time required to complete each process of the shielding pasting project, and calculate the total duration of the main process and auxiliary processes respectively.

[0037] According to the time measurement principle, each process is measured at least three times and the average value is taken. The statistical time of each process is detailed in the attached Figure 2 The total duration of the main process is 73 minutes, and the total duration of the auxiliary process is 17 minutes.

[0038] S4. According to the principle of rhythmic construction, determine the personnel combination and process allocation for main and auxiliary operations.

[0039] The basic principle is that the working times of multiple operation segments divided from the main process are approximately the same, and the difference in the working durations of the multiple operation segments is within 5 minutes; and the working duration of each operation segment = the working duration of the auxiliary process × n ± △, where n is an integer and △ is an allowable deviation value less than 5 minutes.

[0040] As Figure 2 shown, the main process is divided into two operation segments, and the duration of each operation segment and the working duration of the auxiliary process are respectively:

[0041] Duration of the first operation segment = 1 + 10 + 4 + 2 + 4 + 12 + 1 + 1 + 2 = 37 minutes

[0042] Duration of the second operation segment = 2 + 15 + 1 + 1 + 1 + 1 + 1 + 2 + 10 + 2 = 36 minutes

[0043] Working duration of the auxiliary process = 17 minutes; 17 minutes * 2 = 34 minutes

[0044] The first operation segment and the second operation segment are respectively completed by different certified personnel, and the auxiliary process is completed by an uncertified person. At this time, n = 2, that is, an uncertified person can simultaneously meet the auxiliary needs of two main processes.

[0045] Finally, it is determined that 5 personnel are required to complete two complete secondary shielding pasting projects, including 4 certified personnel and 1 uncertified person. Every two of the 4 certified personnel are divided into a group, namely the first group [A, A1] and the second group [B, B1]. Different groups perform different operation segments, and the personnel within the group perform the same operation segment and have a time sequence, so that the uncertified person can continuously assist two personnel within the group. For example, A and B are certified personnel and perform the operations of the main process; C is an auxiliary operator, uncertified, and performs the operations of the auxiliary process. A, A1 perform the operations of the first operation segment, and B, B1 perform the operations of the second operation segment. C continuously assists the operations of A, A1.

[0046] The operator C cooperates with the two groups of personnel, which also conforms to the principle of rhythmic operation. It takes 37 minutes to complete two complete secondary shielding pasting projects. The above operation mode separates the main operation and the auxiliary operation, achieves the best operation division mode, eliminates the waste of waiting, and enables the secondary shielding pasting to reach 37 minutes for every two.

[0047] Specifically, the first operation segment of the main process includes:

[0048] S10. Tape pasting in the area to be operated: Operator A goes to the area to be operated and pastes masking tape to protect the secondary shielding that has been pasted nearby from being damaged during the grinding operation. (A 1 minute)

[0049] S11. Grinding and vacuum cleaner cleaning: Operator A uses a grinding machine or grinding stone to grind the area to be worked on and uses a vacuum cleaner for cleaning. (Operator A: 10 minutes)

[0050] S12. Measuring and marking lines: Operator A measures the area to be worked on and uses a pencil to mark the demarcation line for pasting.

[0051] (Operator A: 4 minutes)

[0052] S13. Marking and registering FSB measurement information: Operator A marks the measured FSB length and width information on the insulation board near the area to be worked on. (Operator A: 2 minutes)

[0053] S14. Pasting protective tape around: Operator A pastes masking tape along the reference line demarcated in step S13 to prevent the glue from contaminating the nearby area outside the area to be worked on during the glue spreading process. At the same time, if there is JF nearby, it also needs to be covered with masking tape to prevent contamination during the glue laying. (Operator A: 4 minutes)

[0054] S15. Preparing the hot press plate and fixing angle iron: Operator A finds the model of the hot press plate that fits the area to be pasted and places it near the area to be worked on. At the same time, find the angle iron and square steel needed during the operation and place them near the area to be worked on. Arrange them neatly according to the rules. (Operator A: 12 minutes)

[0055] S16. Installing fixing studs: Operator A fixes several studs on the nearby insulation board to be used as the support points for fastening subsequent tools. (Operator A: 1 minute)

[0056] S17. Installing the hot press plate fixing angle iron: Operator A installs the angle iron on the studs installed in step S16. The angle iron does not need to be fastened with bolts to prevent unnecessary waste of actions caused by unloading bolts when installing the hot press plate later. (Operator A: 1 minute)

[0057] S18. Laying the FSB pasting tape: Operator A cuts the masking tape according to a certain size and gently attaches one end to the angle iron installed in step S17. And Operator A checks whether all the above steps are completed. If there is no error, convey the completion information to Operator B. (Operator A: 2 minutes)

[0058] S19. Operator A goes to the next area to be worked on and repeats steps S10 to S18, finishing organizing the prepared tools and workstations and repeating the above steps. The working time of Operator A is 37 minutes.

[0059] The auxiliary processes specifically include:

[0060] T1. Gluing, cutting the FSB and ethylene film: After step S14, Operator C obtains the measured length and width information of the FSB. Operator C first goes to the gluing area on the third floor of the scaffolding to apply glue and registers the measurement information. During the preparation of the glue, Operator C simultaneously goes to cut the FSB and ethylene film. After completion, the applied glue, FSB, and ethylene film are taken to the area to be operated and placed in a safe position. (Operator C takes 17 minutes), and the time for Operator C is 17 minutes.

[0061] Specifically, the second operation segment of the main process includes:

[0062] S20. Cleaning: Operator B checks whether the tools are prepared completely at the work station sorted out by Operator A, and whether the glue and secondary shielding prepared in step T1 meet the construction requirements. If it meets the construction requirements, mark the word "OK" after the measurement information. Then use the cleaning equipment to clean before the main operation. (Operator B takes 2 minutes)

[0063] S21. Applying glue and standing still to check for bubbles: Operator B picks up the glue prepared by Operator C and applies it in the operation area. During the application process, it is necessary to ensure that all the glue is used and the glue is evenly applied without obvious bubbles. Stand still for 1 minute to check the glue application situation. (Operator B takes 15 minutes)

[0064] S22. Tearing the edge tape of the boundary filler (JF): If there is JF nearby, Operator B needs to gently tear off the masking tape pasted in step S14 on the JF. (Operator B takes 1 minute)

[0065] S23. Pasting the FSB: Operator B gently lays the FSB prepared in step T1 on the glue applied in step S21, ensuring that glue overflows at the edges of the FSB. (Operator B takes 1 minute)

[0066] S24. Pasting the FSB positioning tape: Operator B uses the masking tape prepared in step S18 to stick tightly to the edge of the FSB to prevent the FSB from shifting when the hot press plate is heated. (Operator B takes 1 minute)

[0067] S25. Operator B uses a small roller to roll out the air bubbles inside the FSB to ensure that the FSB is evenly laid and flat. (Operator B takes 1 minute)

[0068] S26. Pasting the ethylene film and rolling it flat: Operator B attaches the ethylene film prepared in step T1 on the FSB, ensuring that the FSB is completely covered by the ethylene film. (Operator B takes 1 minute)

[0069] S27. Pasting the ethylene film positioning tape: Operator B uses the masking tape prepared in step S18 to stick tightly to the edge of the ethylene film to prevent the ethylene film from shifting when the hot press plate is heated. (Operator B takes 2 minutes)

[0070] S28. Install the hot pressing plate: Operator B uses the hot pressing plate prepared in Step S15 to cover the working position. (Operator B, 10 min)

[0071] S29. Operator B uses square steel to fix the hot pressing plate, connects the air pipe and the power cord at the same time, and opens the hot pressing plate adjustment box. (Operator B, 2 min). It takes Operator B 36 minutes to complete the above steps. Move to the next working station completed by Operator A and repeat Steps S20 to S28.

[0072] In summary, the present invention provides a method for separating the main and auxiliary operations of the secondary shielding pasting of the enclosure system. In this operation method, the process steps of the secondary shielding pasting project are divided into the main process and the auxiliary process. The main process is operated by certified personnel, and the auxiliary process is operated by uncertified personnel to reasonably allocate personnel as much as possible. At the same time, the main process is reasonably divided into two operation segments, so that an uncertified person can meet the auxiliary requirements of two main processes at the same time. Guided by the "separation of main and auxiliary operations" and "rhythmization" operation theories of lean production, the present invention provides a highly efficient construction method for the construction of the MarkⅢ enclosure system. This operation mode shortens the secondary shielding project cycle from 30 days to 20 days, and increases the daily secondary shielding installation quantity by 30%. This standard operation mode provides theoretical guidance for the construction of the secondary shielding project. Set the indicators to be completed daily according to this theoretical guidance. For the number of files that do not reach the installation indicators, relevant explanations of abnormal situations need to be provided. Analyze the abnormalities in the construction process according to the standard operation mode, establish an abnormal database and formulate relevant solutions.

[0073] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for separating the primary and secondary shielding of an enclosure system, characterized in that: The steps include: S1. Sorting out the process steps of the secondary shielding pasting project; S2. Separate the main and auxiliary operations, and divide the process steps of the secondary shielding pasting project into main processes and auxiliary processes. The main processes are performed by certified personnel, and the auxiliary processes are performed by uncertified personnel; S3, calculate and count the time required to complete each process of the shielding pasting project, and calculate the total time of the main process and the auxiliary process respectively; S4. According to the principle of rhythmic construction, determine the personnel combination and process allocation of main and auxiliary operations; the basic principle is that the main process is divided into at least two work sections, and different work sections are completed by different certified personnel; the difference in working time of different work sections is within 5 minutes, and the working time of each work section = the working time of the auxiliary process × n±△, n is an integer, and the value of △ is within 5 minutes.

2. The method for separating the primary and secondary shielding of the enclosure system according to claim 1 is characterized in that: In step S1, the process steps of the secondary shield pasting project include pre-pasting preparation work, pasting operation steps, and inspection and protection operation steps; The preparation work before pasting includes taping the area to be worked on, sanding and vacuum cleaning, measuring and marking, marking and registering FSB measurement information, pasting protective tape around the perimeter, applying glue, cutting FSB and vinyl film, preparing hot press plates and fixing angle irons; FSB stands for flexible secondary shielding; The pasting operation steps include installing fixing studs, installing hot press plate fixing angle irons, laying FSB pasting tape, cleaning, scraping glue and letting it stand to check for bubbles, tearing off the edge tape of the border filler, pasting FSB, pasting FSB positioning tape, pasting vinyl film and rolling it flat, and pasting vinyl film positioning tape; The inspection and protection operation steps include installing the hot press plate, fixing the hot press plate with square steel, connecting the air pipe and power cord, and opening the hot press plate adjustment box.

3. The method for separating the primary and secondary shielding of the enclosure system according to claim 2 is characterized in that: In step S2, the auxiliary process includes gluing and cutting the FSB vinyl film; the part excluding the auxiliary process is the main process.

4. The method for separating the primary and secondary shielding of the enclosure system according to claim 3 is characterized in that: In step S3, the total duration of the main process is 73 minutes, and the total duration of the auxiliary process is 17 minutes.

5. The method for separating the primary and secondary shielding of the enclosure system according to claim 4 is characterized in that: In step S4, the main process is divided into two consecutive operation segments, the duration of the first operation segment is 37 minutes, and the duration of the second operation segment is 36 minutes; the duration of the auxiliary process is 17 minutes; n=2.

6. The method for separating the primary and secondary shielding of the enclosure system according to claim 5 is characterized in that: Five personnel were arranged to complete two sub-shielding and pasting projects, including four certified personnel and one uncertified personnel. The four certified personnel were divided into groups of two each, including the first group and the second group. Different groups carried out different work sections, and the personnel in the group carried out the same work sections in a chronological order, so that the uncertified personnel could continue to assist the two personnel in the group; it took 37 minutes for one uncertified personnel to cooperate with two groups of certified personnel to complete two complete sub-shielding and pasting projects.

7. The method for separating the primary and secondary shielding of the enclosure system according to claim 6 is characterized in that: The main process The first work section includes: tape application, sanding and vacuum cleaning of the work area, measuring and marking, marking and recording FSB measurement information, applying protective tape around the perimeter, preparing hot press plates and fixing angle irons, installing fixing studs, and laying FSB tape; The second operation section is after the first operation section, including cleaning, scraping glue and standing to check bubbles, tearing the edge tape of the border filler, pasting FSB, pasting FSB positioning tape, pasting vinyl film and rolling flat, pasting vinyl film positioning tape, installing the hot press plate, fixing the hot press plate with square steel, connecting the air pipe and power cord, and opening the hot press plate adjustment box; Auxiliary processes are carried out after marking and registering FSB measurement information, including gluing, cutting FSB and vinyl film.

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