CN101916603A - Spent fuel storage sleeve pipe and manufacturing method thereof - Google Patents
Spent fuel storage sleeve pipe and manufacturing method thereof Download PDFInfo
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- CN101916603A CN101916603A CN2010102262693A CN201010226269A CN101916603A CN 101916603 A CN101916603 A CN 101916603A CN 2010102262693 A CN2010102262693 A CN 2010102262693A CN 201010226269 A CN201010226269 A CN 201010226269A CN 101916603 A CN101916603 A CN 101916603A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a spent fuel storage sleeve pipe and a manufacturing method thereof. The spent fuel storage sleeve pipe comprises a side wall and a bottom wall for supporting a spent fuel assembly. The side wall is formed by superposing an inner steel pipe layer for strength bearing, an interlayer cadmium pipe for shielding and an outer steel pipe for protection, the interlayer cadmium pipe is soldered and sealed between the inner steel pipe layer and the outer steel pipe, and the position and the length of the interlayer cadmium pipe can ensure that the active section of the spent fuel assembly can be covered. The feed end of the storage sleeve is flared into a tapered guiding section, the bottom of the storage sleeve pipe is provided with a first water port, and a locating element matched with a grid for accommodating the storage sleeve pipe is arranged on the storage sleeve pipe. The invention has good sleeve pipe sealing property, smooth cooling water circulation and good cooling effect, and the guiding section of the feed port of the storage sleeve pipe can be used for avoiding feeding accidents.
Description
Technical field
The present invention relates to a kind of spent fuel storage sleeve pipe and manufacture method thereof.
Background technology
Used irradiated fuel assembly in the civilian nuclear power plant, owing to also have certain radioactivity, can not directly handle as spent fuel, also need in the irradiated fuel store pond, deposit a period of time, treat that the half life period of irradiated fuel assembly finishes, after reaching spent fuel and burying standard, could finally handle, therefore, needing to make a spent fuel storage device that is arranged in the irradiated fuel store pond deposits.
Common spent fuel storage device, as Chinese patent 200910150807.2 " storage rack that is used for storing nuclear fuel elements ", comprise channel architecture and support plate, channel architecture comprises a plurality of Vertical Channel of admitting fuel element, Vertical Channel is closely adjacent to each other and arranges and have a wall portion, and the wall portion of Vertical Channel is made by the neutron absorbing material or comprises the neutron absorbing material.The deficiency that exists is: can decompose gradually because some neutron absorbing materials such as cadmium are met water, and in decomposable process toxigenicity, so just can not guarantee the neutron conductively-closed of cadmium leak site, and not relate to the seal approach of neutron absorbing material in the literary composition; Moreover the next-door neighbour arranges and has the Vertical Channel of wall portion that its side and bottom surface are water proofs, do not possess the outlet that makes the chilled water circulation, after storage facility was dipped in the pond, chilled water entered from the upper end open of Vertical Channel, but can't flow out swimmingly, circulation freely can not influence cooling effect; In addition, the charging aperture of Vertical Channel often with passage with the footpath, when charging, lack the guide of enlarging, occur irradiated fuel assembly easily and do not drop in the Vertical Channel, but the charging accident such as fall between storage facility upper end or pond and the storage facility.
Summary of the invention
Freely do not influence cooling effect, the deficiency of charging accident occurs easily in order to solve existing, chilled water circulation not good, the present invention proposes clear and coherent smooth, the good cooling results of a kind of good airproof performance, cooling water flow of neutron absorbing material, the spent fuel storage sleeve pipe that is not prone to the charging accident and manufacture method thereof for the sealing that solves the neutron absorbing material that existing spent fuel storage device exists.
The present invention adopts following technical scheme:
A kind of spent fuel storage sleeve pipe, comprise sidewall and the diapire that supports irradiated fuel assembly, described sidewall by the nexine steel pipe that plays strength support role, the interlayer cadmium pipe that plays shielding action, the outer layer pipe that shields is stacked constitutes, described interlayer cadmium pipe is welded among nexine steel pipe and the outer layer pipe, and the position of interlayer cadmium pipe and length can guarantee to cover the active section of irradiated fuel assembly; The feed end enlarging of described storage sleeve pipe becomes the guide section of band tapering, and the bottom of storage sleeve pipe is provided with first outlet pass; Described storage sleeve pipe is provided with the keeper with the screen work coupling of holding storage sleeve pipe.Storage sleeve pipe is arranged in the storage chamber of screen work.
Preferably, the main body of storage sleeve pipe is the square tube section, the guide section side of the being arranged to bell of storage sleeve pipe.The effect of described side's bell is to provide guiding for charging.
Further, described outer layer pipe and nexine steel pipe are butt welded tube, and interlayer cadmium pipe is the overlap joint welded tube, and the lapped seam of the butt joint longitudinal joint of described outer layer pipe, interlayer cadmium pipe, the butt joint longitudinal joint of nexine steel pipe are staggeredly arranged.
Further, described keeper is first boss of each side that is arranged on the square tube section of storage sleeve pipe.The storage chamber inwall of described screen work is provided with second boss with first boss overlap joint coupling.
Preferably, described first outlet pass has a plurality of, is arranged on the storage sleeve pipe diapire around shape.The screen work bottom is provided with second outlet pass that communicates with first outlet pass, and second outlet pass also is arranged on the screen work diapire around shape.Like this, make things convenient for the even circulation of chilled water, help the cooling of irradiated fuel assembly.In addition, when screen work and storage sleeve pipe are sling maintenance, can water in screen work and the storage sleeve pipe yet.
Preferably, be furnished with the location-plate that a circle is used to locate interlayer cadmium pipe on the described nexine steel pipe, described interlayer cadmium pipe places on the described location-plate.
Preferably, the hemisphere nest that swells for each top, side of described first boss in the square tube section of storage sleeve pipe.
The manufacture method of above-mentioned spent fuel storage sleeve pipe may further comprise the steps:
(1) makes nexine steel pipe and outer layer pipe: the steel plate cutting that will make nexine steel pipe and outer layer pipe, carry out the size line, go up plate bending rolls then respectively and roll into pipe crimping, the longitudinal joint butt welding of pipe crimping connects, weld seam carries out liquid penetrant inspection, and the default helium that is used for is visited the aperture that omission is surveyed on outer layer pipe; After nexine steel pipe and outer layer pipe welding are finished, needing in the following step (8) that nexine steel pipe and outer layer pipe are welded formed Sealed sandwich structure carries out helium and visits omission and survey, for conveniently vacuumizing, fill steps such as helium, need on outer tube, hole, if after having welded, bore again, can damage the nexine steel pipe, therefore, directly boring after the weldering of outer layer pipe volume is finished;
(2) location-plate is welded on the nexine steel pipe;
(3) the cadmium plate is wrapped on the nexine steel pipe, cadmium plate one end contacts with described location-plate, the both side edges overlap joint of cadmium plate, and its lapped seam is staggeredly arranged with the longitudinal joint that docks of nexine steel pipe, forms interlayer cadmium pipe;
(4) treat that interlayer cadmium pipe and nexine steel pipe are fitted fully after, the spot welding of interlayer cadmium pipe is fixed;
(5) outer layer pipe is inserted in interlayer cadmium pipe outside, the lapped seam of the butt joint longitudinal joint of outer layer pipe and interlayer cadmium pipe is staggeredly arranged, and the butt joint longitudinal joint of outer layer pipe is staggeredly arranged with the longitudinal joint that docks of nexine steel pipe, forms three layers of sleeve pipe;
(6) by suspender above-mentioned three layers of Casing elevator are installed to bulkage equipment, start bulkage equipment, pipe is risen into by the square tube that xsect is a rectangle;
(7) with outer layer pipe on the both ends of the surface of square tube and the welding of nexine steel pipe, with further reinforcing square tube; Like this, can be with the complete seal protection in end of interlayer cadmium pipe;
(8) sidewall of the square tube that step (7) is formed carries out helium and visits omission and test;
(9) feed end with square tube expands into square bell, swells described hemisphere nest in the side of the square tube of square bell lower end;
(10) bottom of the square tube of making in step (9) welding base plate, described base plate is provided with first outlet pass of arranging around shape, and the weld seam of square tube and base plate is carried out liquid penetrant inspection; Spent fuel storage sleeve pipe completes.
Further, also comprise step between described step (6) and step (7), step (7) and the step (8): square tube is plugged test with being placed in the outer simulated assembly of square tube, even with the interior hole dimension that guarantees square tube, plug process simulation assembly must not have catching phenomenon.
Preferably, longitudinal joint 180 degree that stagger that dock of the lapped seam of interlayer cadmium plate and nexine steel plate arrange, the butt joint longitudinal joint of outer layer pipe is arranged with longitudinal joint 90 degree that stagger that dock of the lapped seam of interlayer cadmium pipe, nexine steel pipe respectively.
Technical conceive of the present invention is: can decompose gradually because cadmium is met water, and in decomposable process toxigenicity, so just can not guarantee the neutron conductively-closed of cadmium leak site, storage sleeve pipe of the present invention adopts three-decker, by interlayer cadmium pipe is wrapped between outer layer pipe and the nexine steel pipe, two ends seal with continuous weld, make that the cadmium good seal is difficult for revealing, thereby guarantee good shielding properties; Moreover, arrange first outlet pass in the storage sleeve pipe bottom, first outlet pass communicates with second outlet pass of the storage chamber bottom of screen work, the chilled water that makes irradiated fuel assembly flow through on every side can flow out from the bottom of storage sleeve pipe, the unobstructed chilled water that flows can in time be taken away the heat of irradiated fuel assembly, good cooling results; In addition, the storage sleeve pipe charging aperture extends out into the guide section of band tapering, is convenient to the safe charging of spentnuclear fuel, avoids occurring charging accidents such as spentnuclear fuel falls between storage facility upper end or pond and the storage facility.
Beneficial effect of the present invention is: (1) storage sleeve pipe adopts three-decker, and the interlayer cadmium seal of tube is good, is difficult for revealing, and the neutron shield performance is good; (2) cooling water flow is clear and coherent smooth, good cooling results; (3) the storage sleeve pipe charging aperture has guide section, can avoid occurring the charging accident.
Description of drawings
Fig. 1 is the structural representation of spent fuel storage sleeve pipe embodiment of the present invention.
Fig. 2 is the A portion enlarged diagram of Fig. 1.
Fig. 3 is the B portion enlarged diagram of Fig. 1.
Fig. 4 is the vertical view of Fig. 1.
Fig. 5 is the assembling synoptic diagram of spent fuel storage sleeve pipe and screen work.
Fig. 6 is the vertical view of Fig. 5.
Embodiment
With reference to Fig. 1-6: spent fuel storage sleeve pipe 2, comprise sidewall 21 and the diapire 22 that supports irradiated fuel assembly, described sidewall 21 constitutes by the nexine steel pipe 211 that plays strength support role, the interlayer cadmium pipe 212 that plays shielding action, the outer layer pipe that shields 213 are stacked, described interlayer cadmium pipe 212 is welded among nexine steel pipe 211 and the outer layer pipe 213, and the position of interlayer cadmium pipe 212 and length can guarantee to cover the active section of irradiated fuel assembly; The main body of spent fuel storage sleeve pipe 2 is the square tube section, and the feed end of storage sleeve pipe 2 expands into the guide section 23 of square bell, and the bottom of described storage sleeve pipe 2 is provided with first outlet pass 12; Described storage sleeve pipe 2 is provided with the keeper with screen work 1 coupling of holding storage sleeve pipe 2, and storage sleeve pipe 2 is arranged in the storage chamber of screen work 1.Described keeper is first boss 31 of each side that is arranged on the square tube section of storage sleeve pipe 2, and the storage chamber inwall of described screen work 1 is provided with second boss 32 with first boss, 31 overlap joint couplings.In the present embodiment, described first boss 31 is the hemisphere nest that swells on each top, side of the square tube section of storage sleeve pipe 2.
Described outer layer pipe 213 and nexine steel pipe 211 are butt welded tube, and interlayer cadmium pipe 212 is the overlap joint welded tube, and the lapped seam of the butt joint longitudinal joint of described outer layer pipe 213, interlayer cadmium pipe 212, the butt joint longitudinal joint of nexine steel pipe 211 are staggeredly arranged.
Be furnished with one on the described nexine steel pipe 211 and enclose the location-plate that is used to locate interlayer cadmium pipe 212, described interlayer cadmium pipe 212 places on the described location-plate.
In the present embodiment, described first outlet pass 12 is first center pit 15 that wears swivel nut for be arranged in four trapezoidal holes on storage chamber 11 diapires around shape in the middle of four trapezoidal holes; Second outlet pass 24 is second center pit 25 for be arranged in four trapezoidal holes on the storage sleeve pipe diapire around shape in the middle of four trapezoidal holes.Arrange that around shape first outlet pass 12, second outlet pass 24 that communicate are even circulations of chilled water for convenience, help the cooling of irradiated fuel assembly.In addition, when screen work and storage sleeve pipe are sling maintenance, can water in screen work and the storage sleeve pipe yet.Coupling bolt 31 passes through first center pit 25 on the storage sleeve pipe 2 and second center pit 15 on the screen work, and the other end is fastening by nut 32, and screen work 1 is fixing with storage sleeve pipe 2.
In the present embodiment, longitudinal joint 180 degree that stagger that dock of the lapped seam of described interlayer cadmium plate 212 and nexine steel plate 211 are arranged, angle permissible variation ± 15 °, the butt joint longitudinal joint of outer layer pipe 213 respectively with the lapped seam of interlayer cadmium pipe 212, the butt joint longitudinal joint of nexine steel pipe 211 90 degree that stagger are arranged, simultaneously, the butt joint longitudinal joint of outer layer pipe 213 is also arranged with longitudinal joint 90 degree that stagger that dock of nexine steel pipe 211, certainly, also can stagger other angle of the slit of three layers of pipe is arranged, but the your pupil of above-mentioned angle security, purpose is to guarantee through the rise sealing of pipe back square tube of bulkage equipment again, otherwise water enters in the cadmium plate, the cadmium dissolving can influence the nuclear screening performance.
The manufacture method of above-mentioned spent fuel storage sleeve pipe, may further comprise the steps: make nexine steel pipe 211 and outer layer pipe 213: the steel plate cutting that will make nexine steel pipe 211 and outer layer pipe 213, carry out the size line, go up plate bending rolls then respectively and roll into pipe crimping, the longitudinal joint butt welding of pipe crimping connects, weld seam carries out 100% liquid penetrant inspection, to guarantee not exist crackle; Default following step (9) helium that is used for is visited the aperture that omission is surveyed on outer layer pipe; After nexine steel pipe and outer layer pipe welding are finished, needing in the following step (9) that nexine steel pipe and outer layer pipe are welded formed Sealed sandwich structure carries out helium and visits omission and survey, for conveniently vacuumizing, fill steps such as helium, need on outer tube, hole, if after having welded, bore again, can manage in the damage, therefore, directly boring after the weldering of outer layer pipe volume is finished;
(1) on outer layer pipe, offers the welding aperture that is used for subsequent step helium spy omission survey; After nexine steel pipe and outer layer pipe welding are finished, need weld formed Sealed sandwich structure to nexine steel pipe and outer layer pipe carries out helium and visits omission and survey, for conveniently vacuumizing, fill steps such as helium, need on outer layer pipe, bore the aperture of a φ 3, if after having welded, bore again, can damage the nexine steel pipe, therefore, directly boring after the weldering of outer layer pipe volume is finished;
(2) location-plate is welded on the nexine steel pipe 211;
(3) the cadmium plate is wrapped on the nexine steel pipe 211, cadmium plate one end contacts with described location-plate, the both side edges of cadmium plate overlap joint, and longitudinal joint 180 degree that stagger that dock of its lapped seam and nexine steel pipe 211 are arranged formation interlayer cadmium pipe 212;
(4) treat that interlayer cadmium pipe 212 and nexine steel pipe 211 are fitted after, 212 spot welding of interlayer cadmium pipe are fixed, should do corresponding qualification of welding procedure before the spot welding;
(5) outer layer pipe 213 is inserted in interlayer cadmium pipe 212 outsides, the lapped seam of the butt joint longitudinal joint of outer layer pipe 213 and interlayer cadmium pipe 212, longitudinal joint 90 degree that stagger that dock of the butt joint longitudinal joint of outer layer pipe 213 and nexine steel pipe 211 are arranged, form three layers of sleeve pipe;
(6) by suspender above-mentioned three layers of Casing elevator are installed to bulkage equipment, start bulkage equipment, pipe is risen into by the square tube that xsect is a rectangle; Pipe being risen into the aid of the bulkage equipment of square tube as storage sleeve pipe making of the present invention, is disclosed prior art, advances two step square tube tubers as ZL03216898.5 hydraulic pressure, just can realize this operation.201010170770.2 " a kind of bulkage equipment " of application also can be used as one of embodiment of bulkage equipment before the applicant.
(7) with being placed in the outer simulated assembly of square tube square tube is plugged test, even with the internal diameter size that guarantees square tube, the shape Founder, the entire test simulated assembly should be steadily to plug, and catching phenomenon must not be arranged;
Plug test concrete operations: square tube is vertically placed, the verticality of adjusting the four sides is also temporary fixed, the handling simulated assembly is suitable for reading to square tube, gently vertical drop, and dropping process should be steadily without hindrance, when discovery has obstruction, measure and hinder the position after the distance of the mouth of pipe, simulated assembly is extracted out, check square tube and processing, again carry out the simulated assembly spot check test after intact, can free smoothly, unhinderedly insertion fully until simulated assembly.
(8) with outer layer pipe on the both ends of the surface of square tube 213 and 211 welding of nexine steel pipe,, note the control of welding position distortion situation during welding with further reinforcing square tube;
(9) sidewall of the square tube that step (8) is formed carries out helium and visits omission and test;
Helium is visited omission and is tested step: use special frock, vacuumize in the Sealed sandwich structure that surrounds from the welding of interlayer cadmium pipe 212 residing nexine steel pipes and outer layer pipe by the aperture on the outer layer pipe 213, fill helium then to 1.05MPa, carry out the helium leak test, check criteria is: the helium slip is answered≤1*10
-8Mbar.l/s.
(10) feed end with square tube expands into square bell, swells described hemisphere nest in the side of the square tube of square bell lower end; The hemisphere nest is as first boss, the 31 overlap joint couplings on the storage chamber inwall of second boss 32 and screen work 1.
(11) bottom of the square tube of making in step (10) welding base plate, described base plate is provided with first outlet pass of arranging around shape 12, the weld seam of square tube and base plate is carried out liquid check thoroughly; Spent fuel storage sleeve pipe completes.In this step, described liquid penetrant inspection is the platinum penetration inspection.
The principle of present embodiment: decompose gradually because cadmium is met water, and in decomposable process toxigenicity, so just can not guarantee the neutron conductively-closed of cadmium leak site, storage sleeve pipe 2 adopts three-decker, by interlayer cadmium pipe is wrapped between outer layer pipe and the nexine steel pipe, two ends seal with continuous weld, make that the cadmium good seal is difficult for revealing, thereby guarantee good shielding properties; Moreover, arrange first outlet pass 12 in storage sleeve pipe 2 bottoms, first outlet pass 12 communicates with second outlet pass 24 of the storage chamber bottom of screen work 1, the chilled water that makes irradiated fuel assembly flow through on every side can flow out from the bottom of storage sleeve pipe 2, the unobstructed chilled water that flows can in time be taken away the heat of irradiated fuel assembly, good cooling results; In addition, storage sleeve pipe 2 charging apertures extend out into the guide section of band tapering, are convenient to the safe charging of spentnuclear fuel, avoid occurring charging accidents such as spentnuclear fuel falls between storage facility upper end or pond and the storage facility.
The foregoing description only is that protection scope of the present invention is not limited only to the foregoing description to the enumerating of inventive concept way of realization, and protection scope of the present invention may extend to those skilled in the art according to the thinkable equivalent technologies means of technical conceive of the present invention.
Claims (10)
1. spent fuel storage sleeve pipe (2), comprise sidewall (21) and the diapire (22) that supports irradiated fuel assembly, it is characterized in that: described sidewall (21) is by the nexine steel pipe (211) that plays strength support role, the interlayer cadmium pipe (212) that plays shielding action, the stacked formation of outer layer pipe (213) that shields, described interlayer cadmium pipe (212) is welded among nexine steel pipe (211) and the outer layer pipe (213), and the position of interlayer cadmium pipe (212) and length can guarantee to cover the active section of irradiated fuel assembly; The feed end enlarging of described storage sleeve pipe (2) becomes the guide section (23) of band tapering, and the bottom of storage sleeve pipe (2) is provided with first outlet pass (12); Described storage sleeve pipe (2) is provided with the keeper with screen work (1) coupling of holding storage sleeve pipe (2).
2. spent fuel storage sleeve pipe as claimed in claim 1 is characterized in that: the main body of described storage sleeve pipe (2) is the square tube section, guide section (23) side of the being arranged to bell of storage sleeve pipe (2).
3. spent fuel storage sleeve pipe as claimed in claim 1 or 2, it is characterized in that: described outer layer pipe (213) and nexine steel pipe (211) are butt welded tube, interlayer cadmium pipe (212) is the overlap joint welded tube, and the lapped seam of the butt joint longitudinal joint of described outer layer pipe (213), interlayer cadmium pipe (212), the butt joint longitudinal joint of nexine steel pipe (211) are staggeredly arranged.
4. spent fuel storage sleeve pipe as claimed in claim 3 is characterized in that: described keeper is first boss (31) of each side of the square tube section that is arranged on storage sleeve pipe (2).
5. spent fuel storage sleeve pipe as claimed in claim 4 is characterized in that: described first outlet pass (12) has a plurality of, is arranged on storage sleeve pipe (2) diapire (22) around shape.
6. spent fuel storage sleeve pipe as claimed in claim 4 is characterized in that: be furnished with the location-plate that a circle is used to locate interlayer cadmium pipe (212) on the described nexine steel pipe (211), described interlayer cadmium pipe (212) places on the described location-plate.
7. spent fuel storage device as claimed in claim 6 is characterized in that: described first boss (31) is the hemisphere nest that swells on each top, side of the square tube section of storage sleeve pipe (2).
8. as the manufacture method of spent fuel storage sleeve pipe (2) as described in the claim 7, it is characterized in that: may further comprise the steps:
(1) makes nexine steel pipe (211) and outer layer pipe (213): the steel plate cutting that will make nexine steel pipe (211) and outer layer pipe (213), carry out the size line, go up plate bending rolls then respectively and roll into pipe crimping, the longitudinal joint butt welding of pipe crimping connects, and weld seam carries out liquid penetrant inspection; The default helium that is used for is visited the aperture that omission is surveyed on outer layer pipe;
(2) location-plate is welded on the nexine steel pipe (211);
(3) with hand the cadmium plate is wrapped on the nexine steel pipe (211), cadmium plate one end contacts with described location-plate, the both side edges overlap joint of cadmium plate, and its lapped seam is staggeredly arranged with the longitudinal joint that docks of nexine steel pipe (211), forms interlayer cadmium pipe (212);
(4) treat that interlayer cadmium pipe (212) and nexine steel pipe (211) are fitted fully after, interlayer cadmium pipe (212) spot welding is fixed;
(5) outer layer pipe (213) is inserted in interlayer cadmium pipe (212) outside, the lapped seam of the butt joint longitudinal joint of outer layer pipe (213) and interlayer cadmium pipe (212) is staggeredly arranged, and forms three layers of sleeve pipe;
(6) by suspender above-mentioned three layers of Casing elevator are installed to bulkage equipment, start bulkage equipment, pipe is risen into by the square tube that xsect is a rectangle;
(7) with outer layer pipe on the both ends of the surface of square tube (213) and nexine steel pipe (211) welding, with further reinforcing square tube;
(8) sidewall of the square tube that step (7) is formed carries out helium and visits omission and test;
(9) feed end with square tube expands into square bell, swells described hemisphere nest in the side of the square tube of square bell lower end;
(10) bottom of the square tube of making in step (9) welding base plate, described base plate is provided with first outlet pass of arranging around shape (12), and the weld seam of square tube and base plate is carried out liquid penetrant inspection; Spent fuel storage sleeve pipe completes.
9. as the manufacture method of spent fuel storage sleeve pipe as described in the claim 8, it is characterized in that: also comprise step between described step (6) and the step (7): square tube is plugged test with being placed in the outer simulated assembly of square tube, even with the interior hole dimension that guarantees square tube, plug process simulation assembly must not have catching phenomenon.
10. as the manufacture method of spent fuel storage sleeve pipe as described in the claim 9, it is characterized in that: longitudinal joint 180 degree that stagger that dock of the lapped seam of described interlayer cadmium plate (212) and nexine steel plate (211) arrange, the butt joint longitudinal joint of outer layer pipe (213) is arranged with longitudinal joint 90 degree that stagger that dock of the lapped seam of interlayer cadmium pipe (212), nexine steel pipe (211) respectively.
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| CN2010102262693A CN101916603B (en) | 2010-07-13 | 2010-07-13 | Spent fuel storage sleeve pipe and manufacturing method thereof |
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| CN2010102262693A CN101916603B (en) | 2010-07-13 | 2010-07-13 | Spent fuel storage sleeve pipe and manufacturing method thereof |
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| CN102142288A (en) * | 2010-12-24 | 2011-08-03 | 清华大学 | Spent fuel storage tank for nuclear power plants |
| CN109985932A (en) * | 2017-12-29 | 2019-07-09 | 中国核动力研究设计院 | A kind of manufacturing method for spentnuclear fuel storage boron aluminium neutron-absorbing shielding cylinder |
| CN111807207A (en) * | 2020-07-20 | 2020-10-23 | 中国核动力研究设计院 | Spent fuel storage grid underwater installation position measuring device and grid installation method |
| CN117030144A (en) * | 2023-10-09 | 2023-11-10 | 西安核设备有限公司 | Grid helium leakage detection method |
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| CN102142288A (en) * | 2010-12-24 | 2011-08-03 | 清华大学 | Spent fuel storage tank for nuclear power plants |
| CN102142288B (en) * | 2010-12-24 | 2012-11-14 | 清华大学 | Spent fuel storage tank for nuclear power plants |
| CN109985932A (en) * | 2017-12-29 | 2019-07-09 | 中国核动力研究设计院 | A kind of manufacturing method for spentnuclear fuel storage boron aluminium neutron-absorbing shielding cylinder |
| CN111807207A (en) * | 2020-07-20 | 2020-10-23 | 中国核动力研究设计院 | Spent fuel storage grid underwater installation position measuring device and grid installation method |
| CN111807207B (en) * | 2020-07-20 | 2022-04-26 | 中国核动力研究设计院 | Spent fuel storage grid underwater installation position measuring device and grid installation method |
| CN117030144A (en) * | 2023-10-09 | 2023-11-10 | 西安核设备有限公司 | Grid helium leakage detection method |
| CN117030144B (en) * | 2023-10-09 | 2024-02-06 | 西安核设备有限公司 | Grid helium leakage detection method |
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