CN107578836A - MOX pellets storage system and method - Google Patents
MOX pellets storage system and method Download PDFInfo
- Publication number
- CN107578836A CN107578836A CN201710762094.XA CN201710762094A CN107578836A CN 107578836 A CN107578836 A CN 107578836A CN 201710762094 A CN201710762094 A CN 201710762094A CN 107578836 A CN107578836 A CN 107578836A
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- China
- Prior art keywords
- triple valve
- vessel
- pellet
- filter
- hold
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Classifications
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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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A kind of MOX pellets storage system, including argon bottle, mechanical pump A, filter A, mechanical pump B, filter B, pellet hold-up vessel；Wherein include argon bottle connection mechanical pump A, mechanical pump A connection triple valves A, triple valve A connects filter A and pellet hold-up vessel respectively, and pressure gauge is installed on triple valve A, filter A is connected with mechanical pump B again, mechanical pump B is connected with filter B, filter B connection triple valve B, triple valve B connection pellet hold-up vessels.A kind of MOX pellets storage method, comprises the following steps：S1：Mechanical pump A squeezes into the dry argon gas in argon bottle in pellet hold-up vessel 6 by triple valve A；S2:After being passed through argon gas for a period of time, gas in pellet hold-up vessel is all replaced into argon gas, triple valve B and pellet hold-up vessel connector is now closed, is continually fed into argon gas；S3：Triple valve A, triple valve B and filter A, the connector of filter B are opened respectively.
Description
Technical field
The invention belongs to nuclear fuel storage field, and in particular to a kind of mox fuel pellet storage system and method.
Background technology
In MOX pellet production processes, because the influence productions such as overhaul of the equipments that may be present, production capacity mismatch are continuous
Problem, the pellet after sintering cannot be introduced into dimension control or assembling components technique, at this moment pellet directly can not be placed on into opening
Glove box atmosphere in, open atmosphere may accelerate the oxidation rate of MOX pellets, change pellet oxygen metal than this importance
Matter, the technical parameters such as fuel-assembly burn-up may be had an impact, and pellet from thermal phenomenon equally can to its own generation shadow
Ring.Large batch of pellet storage inevitably results in irradiation level and significantly raised, because pellet is stored in glove box, to avoid
Other manual operations are not influenceed, need to reduce irradiation level.Therefore, the storage of MOX pellets must avoid the oxidation of pellet, dissipate in time
Heat, while solve the problems, such as that pellet radiation level is too high.
The content of the invention
It is an object of the invention to provide a kind of safe efficient, reliable MOX pellets storing technology, solves pellet storage
The problem of, avoid pellet from aoxidizing, radiating, reduces whole irradiation level in time.
Technical scheme is as follows：A kind of MOX pellets storage system, including argon bottle, mechanical pump A, filter A,
Mechanical pump B, pellet hold-up vessel；Argon bottle connection mechanical pump A is wherein included, mechanical pump A connections triple valve A, triple valve A connect respectively
Filter A and pellet hold-up vessel are met, and pressure gauge is installed on triple valve A, filter A is connected with mechanical pump B again, machinery
Pump B connections triple valve B, triple valve B connection pellet hold-up vessel.
Also include filter B, it is between mechanical pump B and triple valve B.
A kind of pellet storage method of MOX pellets storage system, comprises the following steps：
S1：Triple valve A, triple valve B and pellet hold-up vessel connector are opened, mechanical pump A is by argon bottle
Dry argon gas is squeezed into pellet hold-up vessel by triple valve A；
S2:After being passed through argon gas for a period of time, gas in pellet hold-up vessel is all replaced into argon gas, now closes threeway
Valve B and pellet hold-up vessel connector, are continually fed into argon gas, are then shut off triple valve A and pellet hold-up vessel connector；
S3：Pressure gauge monitors the internal pressure of pellet hold-up vessel, if pressure declines, opens triple valve A, continues to be passed through
Argon gas, until pressure is gone up to 100kpa；
S4：Triple valve A, triple valve B and filter A, the connector of filter B are opened respectively, are made in pellet hold-up vessel
Gas by carrying out filter A, filter B carries out filtration treatment, while the gas in pellet hold-up vessel is circulated,
Prevent that local temperature is too high.
In the S2, when pressure reaches 100kpa in pellet hold-up vessel, triple valve A and pellet hold-up vessel 6 are closed
Connector.
In the S3, if pressure drops to 30kpa or so, triple valve A is opened, continues to be passed through argon gas.
The remarkable result of the present invention is：Efficiently, mox fuel pellet is reliably stored, avoids pellet from aoxidizing, in time radiating,
Reduce overall irradiation level.
Brief description of the drawings
Fig. 1 is MOX pellets storage system of the present invention
In figure：Argon bottle 1, mechanical pump A2, filter A3, mechanical pump B4, filter B 5, pellet hold-up vessel 6, triple valve
A7, pressure gauge 8, triple valve B9,
Embodiment
A kind of MOX pellets storage system, including argon bottle 1, mechanical pump A2, filter A3, mechanical pump B4, filter B 5,
Pellet hold-up vessel 6；Wherein include argon bottle 1 and connect mechanical pump A2, mechanical pump A2 connections triple valve A7, triple valve A7 are connected respectively
Filter A3 and pellet hold-up vessel 6, and pressure gauge 8 is installed on triple valve A7, filter A3 is connected with mechanical pump B4 again,
Mechanical pump B4 is connected with filter B 5, and filter B 5 connects triple valve B9, triple valve B9 connection pellets hold-up vessel 6.
A kind of MOX pellets storage method, comprises the following steps：
S1：Triple valve A7, triple valve B9 and pellet hold-up vessel 6 connector are opened, mechanical pump A2 is by argon bottle 1
In dry argon gas squeezed into by triple valve A7 in pellet hold-up vessel 6；
S2:After being passed through argon gas for a period of time, gas in pellet hold-up vessel 6 is all replaced into argon gas, now closes three
Port valve B9 and pellet hold-up vessel 6 connector, are continually fed into argon gas, and pressure in pellet hold-up vessel 6 is reached 100kpa,
Now close triple valve A7 and pellet hold-up vessel 6 connector；
S3：Pressure gauge 8 monitors the internal pressure of pellet hold-up vessel 6, if pressure drops to 30kpa or so, opens three
Port valve A7, continue to be passed through argon gas, until pressure is gone up to 100kpa.
S4：Triple valve A7, triple valve B9 and filter A3, the connector of filter B 5 are opened respectively, form gas circulation
Loop, the gas in pellet hold-up vessel 6 is made in the loop with 30cm by mechanical pump B4 effect2Flow circulation, pellet
Gas in hold-up vessel 6 passes sequentially through filter A3, filter B 5 carries out filtration treatment, avoids mechanical pump B4 damage, core
By circulation, gas temperature temperature when flowing through pipeline reduces gas in block hold-up vessel 6, prevents local temperature mistake
It is high.
Claims (5)
- A kind of 1. MOX pellets storage system, it is characterised in that：Including argon bottle (1), mechanical pump A (2), filter A (3), machinery Pump B (4), pellet hold-up vessel (6)；Wherein include argon bottle (1) connection mechanical pump A (2), mechanical pump A (2) connection triple valves A (7), triple valve A (7) connects filter A (3) and pellet hold-up vessel (6) respectively, and is provided with pressure on triple valve A (7) Table (8), filter A (3) are connected with mechanical pump B (4) again, mechanical pump B (4) connection triple valve B (9), triple valve B (9) connection core Block hold-up vessel (6).
- A kind of 2. MOX pellets storage system according to claim 1, it is characterised in that：Also include filter B (5), its position Between mechanical pump B (4) and triple valve B (9).
- A kind of 3. pellet storage method of MOX pellet storage systems as claimed in claim 2, it is characterised in that：Including following Step：S1：Triple valve A (7), triple valve B (9) and pellet hold-up vessel (6) connector are opened, mechanical pump A (2) is by argon Dry argon gas in gas cylinder (1) is squeezed into pellet hold-up vessel (6) by triple valve A (7)；S2:After being passed through argon gas for a period of time, pellet hold-up vessel (6) interior gas is all replaced into argon gas, now closes threeway Valve B (9) and pellet hold-up vessel (6) connector, are continually fed into argon gas, are then shut off triple valve A (7) and pellet hold-up vessel (6) connector；S3：The internal pressure of pressure gauge (8) monitoring pellet hold-up vessel (6), if pressure declines, triple valve A (7) is opened, after It is continuous to be passed through argon gas, until pressure is gone up to 100kpa；S4：Triple valve A (7), triple valve B (9) and filter A (3), the connector of filter B (5) are opened respectively, store pellet The gas in container (6) is deposited by carrying out filter A (3), filter B (5) progress filtration treatment, while makes pellet hold-up vessel (6) gas in is circulated, and prevents that local temperature is too high.
- A kind of 4. MOX pellets storage method according to claim 3, it is characterised in that：In the S2, pellet hold-up vessel When pressure reaches 100kpa in 6, triple valve A (7) and pellet hold-up vessel (6) connector are closed.
- A kind of 5. MOX pellets storage method according to claim 3, it is characterised in that：In the S3, if pressure drops to During 30kpa or so, triple valve A (7) is opened, continues to be passed through argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762094.XA CN107578836A (en) | 2017-08-30 | 2017-08-30 | MOX pellets storage system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762094.XA CN107578836A (en) | 2017-08-30 | 2017-08-30 | MOX pellets storage system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107578836A true CN107578836A (en) | 2018-01-12 |
Family
ID=61030333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710762094.XA Pending CN107578836A (en) | 2017-08-30 | 2017-08-30 | MOX pellets storage system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107578836A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01259297A (en) * | 1988-04-08 | 1989-10-16 | Kawasaki Heavy Ind Ltd | Method and device for storing spent fuel of fast breeder |
| JPH01308999A (en) * | 1988-06-08 | 1989-12-13 | Power Reactor & Nuclear Fuel Dev Corp | Storage pretreatment for spent fuel |
| CN103282966A (en) * | 2010-12-21 | 2013-09-04 | Tn国际公司 | Long-term storage device including a ventilated storage case intended to house a containment case containing radioactive substances |
| CN203882631U (en) * | 2014-03-26 | 2014-10-15 | 中国核电工程有限公司 | Partially-reinforced cooling system for dry type spent fuel storage |
| CN206134268U (en) * | 2016-10-09 | 2017-04-26 | 江苏中海华核电材料科技有限公司 | Weary fuel storage ware with seal structure |
| CN106910542A (en) * | 2017-02-22 | 2017-06-30 | 南京航空航天大学 | Spent fuel storage device and preparation method thereof |
-
2017
- 2017-08-30 CN CN201710762094.XA patent/CN107578836A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01259297A (en) * | 1988-04-08 | 1989-10-16 | Kawasaki Heavy Ind Ltd | Method and device for storing spent fuel of fast breeder |
| JPH01308999A (en) * | 1988-06-08 | 1989-12-13 | Power Reactor & Nuclear Fuel Dev Corp | Storage pretreatment for spent fuel |
| CN103282966A (en) * | 2010-12-21 | 2013-09-04 | Tn国际公司 | Long-term storage device including a ventilated storage case intended to house a containment case containing radioactive substances |
| CN203882631U (en) * | 2014-03-26 | 2014-10-15 | 中国核电工程有限公司 | Partially-reinforced cooling system for dry type spent fuel storage |
| CN206134268U (en) * | 2016-10-09 | 2017-04-26 | 江苏中海华核电材料科技有限公司 | Weary fuel storage ware with seal structure |
| CN106910542A (en) * | 2017-02-22 | 2017-06-30 | 南京航空航天大学 | Spent fuel storage device and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |
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| RJ01 | Rejection of invention patent application after publication |