麵濟部中央標率局員工消費合作社印聚 4Ιθ3 t〇 五、發明説明（,） 本發明係有關於包含放射性廢料之運送及/或儲存容器 乾燥之方法，經由在容器内部產生負壓而乾燥該容器内 郡。可確定乾燥期間的蒸發速率。在乾燥之後，可決定留 在容器内部的剩餘蒸汽。本發明也有關於用於執行此方法 的裝置。上又中說明的運送及/或儲存容器通常充滿在潮溼 狀態之核電廠的放射性燃料元件’然後加以脫水。因為在 容器内通常會留下相當的殘餘濕氣，尤其是在燃料元件 内所以必須將谷器冗全乾燥。對於所允許的剩餘濕氣具 有特定的限制。在核電廠的容器製造者需要證明濕氣小於 此限制。所執行的乾燥操作主要避免運送及/或儲存容器中 發生腐触。 在上述實際上已知的型式及本發明所依據的方法中執 行負壓乾燥以從容器内去除剩餘濕氣。可從每單位時間内 上升壓力確定蒸發速率，因此之故，需要知道氣體/濕氣所 可使用的容器體積。在負壓乾燥之後，然後使用濕氣量測 态（如露點鏡，dew point mirror)，持績至少6小時進行額 外的量測，以相當複雜的方式量測剩餘的負壓。基本上這 些量測已進行令人滿意的改進，但是此已知方法對負壓乾 燥具有某些限制。如果負壓乾燥不夠，則仍留在容器内的 濕氣將冷凍或結冰。在已知的方法中，使用已知之蒸發程 序芫成乾燥無法再加以估測，故必須小心地避免濕氣的冷 '東’此係因為濕氣壓力受到冷凍程序的影響。但是，如果 ^器南度負載，且乾燥期間太長的話，由於不允許燃料棒 段套管膨脹的事實，所以也限制了負壓乾燥。因此，也限 -4 - +代沃尺度過巧宁囤國家標準（CNS) A4現格（2ί〇χ297公釐） (請先閲靖背面之注意事項再填窝本頁)Employees' Cooperative Cooperative of the Central Standards Bureau of the Ministry of Health, Ministry of Health, India 4 Iθ3 t05. Description of the Invention (,) The present invention relates to a method for transporting and / or drying storage containers containing radioactive waste, which is dried by generating negative pressure inside the container. Inside the container. The evaporation rate during drying can be determined. After drying, the remaining steam remaining inside the container can be determined. The invention also relates to a device for performing this method. The shipping and / or storage containers described above are usually filled with the radioactive fuel elements of a nuclear power plant in a humid state and then dehydrated. Because considerable residual moisture is usually left in the container, especially in the fuel element, the trough must be dried completely. There are specific restrictions on the allowable residual moisture. Container manufacturers at nuclear power plants need to demonstrate that moisture is less than this limit. The drying operation performed is mainly to prevent corrosion in the shipping and / or storage container. In the above-mentioned actually known type and the method on which the present invention is based, negative pressure drying is performed to remove residual moisture from the container. The rate of evaporation can be determined from the rising pressure per unit of time, so for this reason it is necessary to know the volume of the container in which the gas / moisture can be used. After the negative pressure is dried, then use a moisture measurement state (such as a dew point mirror) for at least 6 hours to perform additional measurements to measure the remaining negative pressure in a rather complicated manner. Basically these measurements have been satisfactorily improved, but this known method has certain limitations on negative pressure drying. If the vacuum is not dry enough, the moisture still in the container will freeze or freeze. In the known methods, drying using known evaporation procedures can no longer be estimated, so care must be taken to avoid the cold 'east' of moisture because the moisture pressure is affected by the freezing process. However, if the load is south, and the drying period is too long, due to the fact that the fuel rod section casing is not allowed to swell, negative pressure drying is also limited. Therefore, it is also limited to -4-+ Daiwo standard too Qiao Ning National Standard (CNS) A4 (2ί〇χ297 mm) (Please read the precautions on the back of Jing before filling this page)
經濟部中央橾牟局員Η消費合作社印製 4183 1〇 at B7 五、發明説明（ 制了此負壓乾燥之谷许期間。對於已知的負壓乾燥，使用 出口側含冷凝器的大單級轉動輪葉泵，或者使用雙級轉動 輪葉泵與吸入側冷凝器之結合，這些對應裝置的量測基本 上已證明相當令人滿意’但是沒有更進一步最適化。 在已知之另一來自實際驗證的實施例中，使用容器的負 壓乾燥，且在負壓下應用驅除氣體持續沖洗容器，最好驅 除氣體為惰性氣體，如氦。也可以使用空氣及氮氣作為驅 除氣體，與上述負壓乾燥比較下，此方法可改進容器内部 的去熱《但是’此程序相當複雜乂而且，持續供應惰性氣 體對於使用裝置之冷凝器的效率將會產生逆效應。基本上 已證明此方法相當令人滿意，但是不是最適之方法。 本發明係基於指示上文之類似之方法的技術問題，並中 可在相當短的時間内達成有效乾燥，且其中可對應在容器 中，餘之水份或剩餘的濕氣得到令人信賴的效$，且可信 賴容器内部指示在沒有其中複雜量測下所可達到的乾燥度： 為了解決此一技術上的問題，本發明中提出—種在上文 中說明的方法，其特徵為執行負壓乾燥，_ ::的濕氣乾燥為…從冷《理期間，蒸發速= 二”容器内部仍留下的剩餘濕氣。因此，依據本=偏 内邵剩餘濕氣的冷束可具有相當程度的忍受度。與 H相比㈣，在本發明中，含惰性氣體、 會連續排出廢氣。 合益内4不 依1本發明的較佳實施例（此實施例在本發明 預疋乾燥時間後’將容器内部充填氦氣，且然後： (請先閲讀背面之注意事項再填舄本頁} k'·Printed by the Central Government Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 4183 10at B7 V. Description of the invention (made this period of negative pressure drying valley. For known negative pressure drying, use a large single stage with condenser on the outlet side Rotary vane pumps, or the use of a two-stage rotary vane pump with a suction-side condenser, the measurement of these corresponding devices has basically proved to be quite satisfactory 'but has not been further optimized. Another known from the actual In the verified embodiment, the negative pressure of the container is used for drying, and a purging gas is continuously used to flush the container under a negative pressure. The purging gas is preferably an inert gas, such as helium. Air and nitrogen can also be used as the purging gas, and the above negative pressure is used. Under the comparison of drying, this method can improve the heat removal inside the container. "But 'the procedure is quite complicated. Moreover, the continuous supply of inert gas will have an inverse effect on the efficiency of the condenser used in the device. This method has basically proved to be quite attractive. Satisfactory, but not the most suitable method. The present invention is based on technical problems that indicate similar methods as above, and may be in a relatively short time. Effective drying is achieved within time, and the corresponding moisture in the container can be obtained, and the remaining moisture can be trusted, and the internal indication of the reliable container can reach the dryness without complicated measurement. : In order to solve this technical problem, the present invention proposes a method described above, which is characterized by performing negative pressure drying, _: 's moisture drying is ... from the cold period, the evaporation rate = two "The remaining moisture remaining inside the container. Therefore, according to this = the cold beam of the remaining moisture in the inward direction can have a considerable degree of tolerance. Compared with H, in the present invention, inert gas containing, will be continuous The exhaust gas is exhausted. 4 in accordance with the preferred embodiment of the present invention (this embodiment after the pre-drying time of the present invention 'fill the container with helium, and then: (Please read the precautions on the back before filling This page} k '·
,1T 4 ) Β3 ί〇 A7 B7 五、發明説明（3 ) -济部中央標笨局員工消費合作.社印繁 產生負壓，以作為乾燥之用》最好’在剩餘濕氣剩餘後灌 入氦氣。因此，在本發明的設計理念之内，可另外執行負 壓乾燥，確定由灌入氦氣而使得剩餘的濕氣冷康為止，且 如果需要的話，再度進行負壓乾燥，確定冷康為止，其餘 步騾依此類推。在灌入氦氣後’最好再開始進行負壓乾燥 之後，讓氦氣仍留在容器内一段時間，最好是一小時。灌 入氦氣以供應熱量且因此產生乾燥速度《在灌入氛.氣後， 仍留在容器内部的水份可吸收熱量（稱為„蓄積 "(accumulation))，在往後的負壓乾燥期間，該熱量被轉換 成蒸發熱’使得乾燥程序可加速。依據本發明的較佳實施 例’容器灌入氦氣至約100 hPa的壓力。最好，用於灌入 谷器的氦氣純度可至少為99.996%。與在介紹中說明的已 知步驟比較下，本發明的惰性氣體或氦氣.適當在特定的時 段（而非持續）進行沖洗。灌入氦氣之方法的優點為’甚至 在高度負載的容器内仍不會限制負壓乾燥時間。另言之’ 可使用本發明的方法而不需要額外注意，甚至對於在負載 時須維持在真空或負壓下僅一段時間下的容器。 ” 本發明係基於發現與乾燥度有關之可信賴需要，且功 十如果依據本發明，可以相當細精的方式冷凍容器内部剩 餘濕氣的話，則可以得到剩餘的濕氣量或在容器内剩餘水 量。另言之，有達到以相當準確的方法決定乾燥的時間。 依據本發明，在負壓乾燥期間，決定蒸發速率。可由壓力 量測或者由量測泵運送輸出而確定蒸發速率。在負壓乾燥 期間，開始時，蒸發速率呈線性下降。當負壓乾燥持續時， 能 (請先聞讀背面之注意事項再填寫本頁} *,衣, 1T 4) Β3 ί〇A7 B7 V. Description of the invention (3)-Consumers' cooperation with the Central Bureau of Standards of the Ministry of Economic Affairs of the People's Republic of China. The company produced negative pressure for drying purposes. Into helium. Therefore, within the design concept of the present invention, a negative pressure drying may be additionally performed, and it is determined that the remaining moisture is cooled by filling helium gas, and if necessary, a negative pressure drying is performed again, and a cold temperature is determined, The rest of the steps followed. After filling with helium gas, it is better to start the negative pressure drying and leave the helium gas in the container for a period of time, preferably one hour. Injecting helium gas to supply heat and thus produce a drying speed "After the atmosphere is filled, the water remaining in the container can absorb heat (called" accumulation "), at a negative pressure in the future During drying, this heat is converted into heat of evaporation 'to allow the drying process to be accelerated. According to the preferred embodiment of the present invention, the container is filled with helium to a pressure of about 100 hPa. Preferably, the purity of the helium used for filling the trough is It can be at least 99.996%. Compared with the known steps described in the introduction, the inert gas or helium of the present invention is suitable for flushing at a specific period of time (not continuous). The advantage of the method of filling helium is' Negative pressure drying time is not limited even in highly loaded containers. In other words, the method of the present invention can be used without additional attention, even for those that must be maintained under vacuum or under negative pressure for only a period of time under load Container. "The present invention is based on the discovery of a reliable need related to dryness, and if the remaining moisture in the container can be frozen in a very fine manner according to the present invention, the remaining can be obtained. The amount of moisture or water remaining in the container. In other words, it is possible to determine the drying time in a fairly accurate way. According to the invention, during the drying under negative pressure, the evaporation rate is determined. The evaporation rate can be determined by pressure measurement or by the output delivered by a measurement pump. During negative pressure drying, the evaporation rate decreases linearly at the beginning. When negative pressure drying continues, (please read the precautions on the back before filling in this page) *, clothing
、1T '6- •張&度㈣巾關家標準（CNS ) Α4規格（210^297¾- 吋璉郎十央螵弟局員工消費合作社印 -7-, 1T '6- • Zhang & Degrees Family Care Standards (CNS) Α4 specifications (210 ^ 297¾-inch Inkura Shiyang Children's Bureau Staff Consumer Cooperative Cooperative Seal -7-
4183 10 A7 —--------__B7 五、發明説明（） 在容器内部剩餘的濕氣或剩餘的水份因為蒸發熱去除所 以冷凍下來，水蒸汽壓力側維持固定。因此如同上述蒸發 速率中大致上呈線性之曲線上產生一步階性的改變。冷凍 之水量可由此蒸發速率的曲線中確定，且因此有達到決定 仍留在容器内部的剩餘濕氣量。詳言之，可將冷康期間所 釋出之蒸汽量乘上蒸發熱與溶化熱的比率而決定冷凍水 量。在本發明的設計理念内經測試氣流執行校準操作以量 測蒸發速4 〇尤纟有用的是不需要知曉用於決定容器内部 中剩餘濕氣含量的容器大小。 A結果’本發明的方法相當簡單，便宜，且同時可有效地 乾燥容器内部。可應用簡單的方法完成運送及/或儲存容器 中用於剩餘濕氣之特定限制β 本發明也有關於一種用於執行本發明之方法的裝置，其 特徵為容器内部經由一吸入管連接一魯氏泵，其中在負壓 乾燥的第—級中，冷凝器連接魯氏泵的下游，且其中如果 預設壓力低於預定值，則在負壓乾燥的第二階段中 的輪葉㈣接魯氏㈣下游。最好，冷凝 葉泵的下游》 逆伐得勁輪 W發明中該㈣㈣使用尤其重要。因為操作魯氏聚 不需要内邵密封，其尤適於運送及壓縮蒸汽。因此 ❹’負㈣㈣料，在魯U下游的冷凝器 L周溫下的冷; 東水單獨操作。因此，不需要特殊的冷 :二：：以’本發明<裝置可由可得到相當高之吸下功 十的取小支出中加以辨識。因為本發明之魯歧的置入， 本纸张尺度適用中國國家裙準（CNS) Α4規格(2!0x^5~y /)I-ΓI-.——IT------J______ ; ----—' --- (請先閱讀背面之注意事項再填寫本頁) A7 B7 41S3 五、發明説明（ 該裝f可在最低壓力下操作，即壓力极低於（hpa。此最 好可得到下列事實：即可確定地量化乾 可先之方式得到。在本發明中使用 ：：以功能上 最好轉動輪葉系之水蒸汽容量至 少為40 hPa。 ^述說明係與運送及/或儲存容器内部㈣容器内 之第-蓋子及第二蓋子之間之柵壁乾燥最好可由適當的 乾燥步驟執行。相同的方法可用於乾燥第一蓋子密封 隙。 ^ 下文說明本發明的實施例，並請參考附圖，其中各圖為： 圖1為連接本發明裝置之運送及/或儲存容器，以用於乾 燥容器内部，以及 圖2示本發明中用於乾燥容器内部的裳置。 主要元件代表符號 (請先閲讀背面之注意事項再填寫本頁) " 訂 fc£谛郎中央慄华局員工消費合作社印製 1 容器 10 氣氣源 2 容器内部 11 閥 3 吸入管 12 壓力量測裝置 4 魯氏(Roots)泵 13 第一蓋子 5 冷凝器 14 壓力量測裝置 6 流量計 15 壓力量測裝置 7 轉動輪葉泵 16 記綠器 8 冷凝器 η 吸入線閥 9 密封供應管路 18 閥 8- 本纸ί長尺度適用中國國家標準（CNS) A4規格（210X297公釐） 418310 A7 B7 五、發明説明（6 ) 19 閥 20 閥 21 閥 22 儀器閥 {讀先閲請背面之注意事項再填寫本頁) 圖示一用於執行本發明之裝置，其可乾燥運送及、、： 容器1，該容器含放射性廢料，尤其是燃料元件。或，存 内部產生負壓而乾燥容器内部魯氏泵4經吸二f容器 接容器内部2。在負壓乾燥的第一級中，冷凝器$、S 3'連 氏泵4的下游。在圖2所示的實施例中，流量接魯 氏泵4。最好流量计為一商業上量測範園介於〇到$ \魯 的流量計。 cm & 訂 在負壓乾燥的第二級中，在預定壓力之下時，轉動 葉泵7連接魯氏泵4的下游。本發明包含使用雙線轉動： 葉泵7的例子，而並在蒸汽壓力下的冷凝器5。最好口 : 放射冷凝器的冷凝器8最好連接轉動輪葉条7的下游。、 接本發明之下游的轉動輪m在葱發速率的線性範園= 操作，最好吸入功率固定而與容器體積無關。結果，本發 明的录速可加以設計，使得運送輸出降至最低壓力或蒸發 壓力。 、 經濟部中央標準局員工消资合作社印製 從圖1中可看到，較佳實施例之容器内部2崾含閥i i 之密封供應管路9連接氦氣源10。在預定間隔中容器内部 2灌入氦氣’然後再產生負壓以執行乾燥之用。 在圖1中顯示運送及/或儲存容器丨，其含容器内部2及 第一蓋子B。也顯示壓力量測裝置12，由此可在大於1〇〇 hPa的壓力下量測總壓Po。最好壓力量測裴置〖2為商用的 -9 本紙乐尺度適用中國國家標隼（CNS ) A4規格（2〖〇χ297公餐） 4^Sl〇 五、發明説明（7 A7 B7 經濟部t央標準局貝工消費合作社印裝 薄膜真2量測計，其量測範圍從〇到2000 hPa，且解析度 為1 ^圖1不範圍在100 hPa下，用於量測總壓ρι的 裝置14Θ ,麗f I測震1 15 *好是一商用之傳統容量真空 儀’其量測範圍從0.01到1〇〇 hPa。圖2顯示用於量測總 廢ΡΠ的壓力量測裝I 1 5，最好此壓力量測裝置1 5為一商 用之傳統熱導真空儀，如圖2可看出，最好量測的I力ρ。， Pi及Ρπ適於饋入記錄器16中，以畫出壓力曲線或泵停止 曲線以作為計算之用。 下又說明本發明的方法並請參考附圖。將燃料元件載入 運送及/或儲存容器内部2中，且去除廢料。然後執行容器 内部2之乾燥以去除剩餘的漏氣。先關閉吸入線閥I?.及閾 i 1 (見圖1及2中比較性的研究）。為了決定參考壓力，記 錄器開始畫出壓力Pi及Ρπ。關閉閥18及19,且打開闕20 及^然後由儀器閥22設定通量為卫Ncm3/s。然後讀取 壓力Ρπ ’作為參考壓力值β然後封閉閥2丨且打開閥〗8 ’ 19 ° 為了執行負壓乾燥，打開吸入線閥丨7。在蜃力= i〇〇 hPa下封閉閥20。連接魯氏泵4下游的冷凝器5在預設的 間隔下呈空置狀態，如間隔如幾小時。在壓力Ρη =丨〇 hpa 下1關閉閥1 8，19 JL打開閥20。 當壓力Pi S 3hPa時或另一給定的時間限制值（對於負壓 乾燥）已超過時，將容器内部2灌入氦氣。因此之故，關閉 吸入線閥17 ’打開用於氦氣源1 〇之供應線9的閥11。閥 11仍開著，直到容器内灌入100 hPa的氦氣為止。在1小 -10 本紙張X度適用中國國家搮準（CNS ) A4規格（210X297公釐） (請先聞讀背面之注意事項再填寫本頁) •K. 訂 ,i— I -. A7 B7 418310 五、發明説明（ 時後，再打開吸入線閥17,且再開始容器内部的負壓乾 燥》在約1小時的負壓乾燥後，壓力ρπ被特別決定β如果 此壓力Ρπ大於開始時記錄的參考壓力值，則容器内部2 再灌入氦氣，如上所述，且然後執行負壓乾燥。但是，如 果壓力ΡΙΙ小於上述決定的參考壓力值，則完成此乾燥。關 閉吸入線閥17。最好，打開用於氦氣源i 〇之供應管9的 閥1 1 ’直到容器内部2灌入1 〇〇 hPa的氦為止。 ---------Lk— (請先聞讀背面之注意事項再填寫本頁) 訂 :ΐ=β=Γ;.中夬嘌¢.局員工消費合作社印¾ 木印nt遢中圉國家標準（CNS ) A4規格（210X 297公釐）4183 10 A7 —--------__ B7 V. Description of the invention () The remaining moisture or water in the container is frozen due to evaporation heat removal, and the water vapor pressure side remains fixed. As a result, a stepwise change occurs on the substantially linear curve as described above. The amount of frozen water can be determined from the curve of the evaporation rate, and thus there is reached the amount of residual moisture that still remains inside the container. In detail, the amount of steam released during the cold period can be multiplied by the ratio of heat of evaporation to heat of melting to determine the amount of frozen water. It is within the design concept of the present invention to perform a calibration operation with a test gas flow to measure the evaporation rate 40. It is particularly useful not to know the size of the container used to determine the amount of moisture remaining in the interior of the container. A result 'The method of the present invention is relatively simple and inexpensive, and at the same time, the inside of the container can be effectively dried. A simple method can be applied to complete the specific limitation of the remaining moisture in the transport and / or storage container. The invention also relates to a device for carrying out the method of the invention, characterized in that the inside of the container is connected to a Luke via a suction tube A pump in which in the first stage of negative pressure drying, the condenser is connected downstream of the Luke pump, and if the preset pressure is lower than a predetermined value, the blades in the second stage of negative pressure drying are connected to the Luke ㈣ Downstream. Best, downstream of the condensing vane pump. This invention is particularly important in the invention of the reverse cutting wheel W. Because Lue poly does not require an internal seal, it is particularly suitable for transporting and compressing steam. Therefore, ❹ ’negative charge is cold at the peripheral temperature of the condenser L downstream of Lu U; Dongshui operates separately. Therefore, no special cooling is required: Two: The device of the present invention can be identified from the small expenditure that can obtain a relatively high suction power. Because of the insertion of the Luqi of the present invention, the paper size is applicable to China National Skirt Standard (CNS) Α4 specification (2! 0x ^ 5 ~ y /) I-ΓI -.—— IT ------ J______;- ----- '--- (Please read the precautions on the back before filling out this page) A7 B7 41S3 V. Description of the invention (The device f can be operated at the lowest pressure, that is, the pressure is extremely lower than (hpa. This is the best The following facts can be obtained: the dry quantification can be obtained in a certain way. It is used in the present invention: the water vapor capacity of the blade system which is preferably rotated functionally is at least 40 hPa. The description is related to transportation and / Or the inside of the storage container, the grid wall drying between the first lid and the second lid in the container is preferably performed by an appropriate drying step. The same method can be used to dry the first lid sealing gap. ^ Examples of the present invention are described below Please refer to the accompanying drawings, wherein each of the drawings is as follows: FIG. 1 is a transportation and / or storage container connected to the device of the present invention for drying the inside of the container, and FIG. 2 shows a dress used for drying the inside of the container in the present invention. Main component representative symbols (please read the precautions on the back before filling this page) " Order fc £ printed by the Central Lihua Bureau employee consumer cooperative 1 container 10 gas source 2 container interior 11 valve 3 suction pipe 12 pressure measuring device 4 Roots pump 13 first cover 5 condenser 14 pressure Measuring device 6 Flow meter 15 Pressure measuring device 7 Rotary vane pump 16 Green recorder 8 Condenser η Suction line valve 9 Sealed supply line 18 Valve 8- This paper is long-sized and is suitable for China National Standard (CNS) A4 specifications (210X297 mm) 418310 A7 B7 V. Description of the invention (6) 19 Valve 20 Valve 21 Valve 22 Instrument valve {Read the first note, please fill in this page before filling out this page) Picture a device for implementing the present invention, which Can be transported dry and: Container 1, which contains radioactive waste, especially fuel elements. Or, a negative pressure is generated inside the drying container, and a Luke pump 4 inside the drying container is connected to the container 2 through the suction f. The container is dried under negative pressure. In the first stage, the condenser $, S 3 'downstream of the Lian pump 4. In the embodiment shown in Figure 2, the flow rate is connected to the Lushi pump 4. Preferably, the flow meter is a commercially available measurement Flowmeters from 0 to $. Cm & order dry at negative pressure In the second stage, at a predetermined pressure, the rotary vane pump 7 is connected downstream of the Roots pump 4. The present invention includes an example of using a two-line rotary: vane pump 7 and a condenser 5 under steam pressure. The best mouth: The condenser 8 of the radiation condenser is preferably connected downstream of the rotating wheel blade 7. The linear wheel of the rotating wheel m connected to the downstream of the present invention is operated in the linear range of the onion rate, preferably the fixed suction power and The volume of the container is irrelevant. As a result, the recording speed of the present invention can be designed so that the conveying output is reduced to the minimum pressure or the evaporation pressure. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs As can be seen from FIG. 1, the inside of the container 2 in the preferred embodiment, the sealed supply pipeline 9 containing the valve i i is connected to the helium source 10. The inside of the container 2 is filled with helium gas at a predetermined interval and then a negative pressure is generated to perform drying. A transport and / or storage container 丨 is shown in FIG. 1 and includes a container interior 2 and a first lid B. A pressure measuring device 12 is also shown, whereby the total pressure Po can be measured at a pressure greater than 100 hPa. The best pressure measurement is Pei 〖2 is commercial -9. This paper music scale is applicable to Chinese national standard (CNS) A4 specifications (2 〖〇297297 meals） 4 ^ S105. Invention description (7 A7 B7 Ministry of Economic Affairs t Central Standards Bureau Shellfish Consumer Cooperative printed film true 2 measuring meter, its measurement range is from 0 to 2000 hPa, and the resolution is 1 ^ Figure 1 is not in the range of 100 hPa, a device for measuring total pressure ρ 14Θ, Li f I Seismic measurement 1 15 * It is a commercial traditional capacity vacuum instrument 'whose measurement range is from 0.01 to 100 hPa. Figure 2 shows the pressure measuring device I 1 5 for measuring total waste Π. Preferably, the pressure measuring device 15 is a commercial conventional thermal conductivity vacuum instrument. As can be seen in Figure 2, the best measured I force ρ. Pi and Pπ are suitable for feeding into the recorder 16 to Draw the pressure curve or pump stop curve for calculation. The method of the present invention will be described below with reference to the drawings. The fuel element is loaded into the transport and / or storage container interior 2 and the waste is removed. Then the inside of the container is executed 2 to dry to remove the remaining leakage. First close the suction line valve I? And the threshold i 1 (see the comparative study in Figures 1 and 2). In order to determine the reference pressure, the recorder begins to draw the pressure Pi and Pπ. Close the valves 18 and 19, and open 阙 20 and ^, then set the flux to Ncm3 / s by the instrument valve 22. Then read the pressure Pπ 'as the reference pressure The value β then closes the valve 2 and opens the valve. 8 '19 ° In order to perform negative pressure drying, the suction line valve is opened. 7. Close the valve 20 at a pressure of 100 hPa. Connect the condenser downstream of the Luke pump 4 5 It is empty at the preset interval, such as several hours. At the pressure Pη = 丨 〇hpa 1 closes the valve 18, 19 JL opens the valve 20. When the pressure Pi S 3hPa or another given time When the limit value (for negative pressure drying) has been exceeded, fill the inside of the container 2 with helium. Therefore, close the suction line valve 17 'and open the valve 11 for the supply line 9 of the helium source 10. The valve 11 remains Keep it open until the container is filled with 100 hPa of helium. The paper is 1 degree-10 X degree applicable to China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling This page) • K. Order, i— I-. A7 B7 418310 V. Description of the invention (After that, open the suction line again 17, and then start the negative pressure drying inside the container. ”After about 1 hour of negative pressure drying, the pressure ρπ is specially determined. If this pressure Pπ is greater than the reference pressure value recorded at the beginning, then the inside of the container is filled with helium. As described above, and then performing a negative pressure drying. However, if the pressure PI is less than the reference pressure value determined above, the drying is completed. The suction line valve 17 is closed. Preferably, the supply pipe for the helium gas source i 0 is opened 9's valve 1 1 'until the inside of the container 2 is filled with 100 hPa of helium. --------- Lk— (Please read the precautions on the reverse side before filling out this page) Order: ΐ = β = Γ ;. 中 夬 浦 ¢. Bureau employee consumer cooperative seal ¾ wood seal nt 遢 中圉 National Standard (CNS) A4 specification (210X 297 mm)