JP2010197327A - Transfer tool for liquid specimen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transfer tool for a liquid specimen allowing a specimen to be transferred without causing so-called contamination in work in a manipulator chamber which is a working chamber, allowing the work to be performed simply in a short time as compared with a prior art, and furthermore, reducing the amount of radioactive waste caused by one time of transfer work as compared with the prior art. <P>SOLUTION: A transfer tool body 10 for storing the liquid specimen is a cylindrical container with an opening formed at its upper part. The upside of the tool body 10 is detachably crowned with a cap 20. A funnel-shaped flow path 30 is disposed in a top plate 21 of the cap 20. A wide mouth 31 of the flow path 30 is formed so that its periphery sticks quickly to an inner wall of the tool body 10 over the entire circumference thereof. A spout 32 of the flow path 30 is mounted with an injection needle 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid sample transfer tool used in a facility such as a nuclear facility to perform a necessary pretreatment on an original sample sent to an analysis facility and transfer it to an analysis chamber as a liquid sample ready for analysis. It is about.

  Currently, in facilities handling nuclear power, whether or not the value of the target substance concentration or physical quantity in the in-process fluid is within a specified range is inspected by periodically collecting and analyzing the substance. .

  The original sample collected at the site contaminated with radioactive material is once transferred to a manipulator chamber where it can be operated with a manipulator, where it is pre-processed into a liquid sample that can be analyzed, and then into a glove box where analysis work is performed. Has been transported.

  FIG. 10 is a diagram showing a schematic configuration of a manipulator chamber to which a container containing a sample is transferred from the site. In the manipulator chamber 100, the original sample collected in the field can be transferred in a state where the original sample is contained in the container, and the loaded original sample can be subjected to processing such as dilution in the manipulator chamber 100 for analysis. There is provided a carry-out box 102 for transferring the liquid sample for analysis pretreated to a proper state to a glove box which is an analysis chamber.

  Reference numeral 103 denotes a transfer tool carry-in box into which a transfer tool used when transferring the liquid sample for analysis pretreated in the manipulator chamber 100 to the glove box serving as the analysis chamber is carried from the outside.

  Here, when the original sample is carried in from the site, the container itself containing the original sample is also contaminated on the site, so that the worker A who performs the work in the manipulator chamber 100 performs all the operations. Use M.

  The worker A who uses the manipulator M in the manipulator chamber 100 first analyzes the raw sample sent from the site into the container 110 into the carry-in box 101 by transferring it from the container 110 to a beaker and diluting it. Work to make the sample in a possible state.

  Next, the worker A moves the liquid sample in the beaker ready for analysis into the transfer tool 120 sent to the transfer tool carry-in box 103, and uses the transfer tool 120 to carry out the unloading box. It moves into the uncontaminated air transportation container in 102, and this air transportation container is aired to the glove box which is an analysis room.

  Here, the manipulator chamber 100 which is a working chamber for handling the original sample sent in the state where it enters the container 110 from such a site and the glove box which is an analysis chamber for actually analyzing the sample are allowed. Since the contamination levels are significantly different, the carry-out box 102 connected to the glove box is required to have high airtightness. A system called STS (Solution Transfer System) is already known as a system having such a highly airtight carry-out box 102.

  In the STS carry-out box 102, it is necessary to move the liquid sample in the manipulator chamber 100 to an uncontaminated air delivery container in the carry-out box 102 using an injection needle. For this reason, the operation of temporarily transferring the liquid sample that can be analyzed in the manipulator chamber 100 into the transfer device 120 including the injection needle is an essential operation in the manipulator chamber 100.

  Here, a conventional method for transferring a liquid sample in an analyzable state from a beaker to a transfer tool 120 having an injection needle using the manipulator M will be described with reference to the drawings.

  FIG. 11 shows parts used in a conventional liquid transfer method (hereinafter referred to as AREVA method) adopted by AREVA NC of France.

  In FIG. 11, reference numeral 120 denotes a cylindrical transfer tool in which the internal airtightness is maintained, and a rubber stopper portion 120a through which the injection needle can pass is provided on the upper portion thereof. 121 is a syringe to which an injection needle can be attached at the tip, and 121 a is a piston that is an accessory of the syringe 121. 122 and 123 are injection needles, and 122a and 123a are protective caps. Reference numeral 124 denotes a needle holder including a cap member 125 that can be crowned on the upper portion of the transfer tool 120 and a double-ended needle 126, and 126a denotes a protective cap.

  In the conventional liquid transfer method, first, assembly work is performed outside the manipulator chamber 100 according to the procedure shown in FIGS.

  That is, the piston 121a is removed from the syringe 121 as shown in FIG. 12 (a), the injection needle 122 is attached to the tip of the syringe 121 as shown in FIG. 12 (b), and the protective cap 122a is removed. As shown in FIG. 12C, the injection needle 122 and the injection needle 123 attached to the syringe 121 are passed through the rubber stopper 120a on the upper part of the transfer tool 120, and the assembly operation is completed.

  Here, the injection needle 123 serves as a vent hole when a sample is put into the transfer tool 120 from the syringe 121.

  Thus, the transfer tool 120 in the state shown in FIG. 12C and the needle holder 124 shown in FIG. 11 are carried into the transfer tool carry-in box 103 of the manipulator chamber 100 from the outside.

  Next, an operation performed using the manipulator M in the manipulator chamber 100 which is a work chamber will be described.

  First, as shown in FIG. 13A, the worker pours the liquid sample S in the beaker B that is ready for analysis into the syringe 121, and the sample S in the syringe 121 falls naturally. And waits for movement into the transfer tool 120.

  When the sample S in the syringe 121 moves into the transfer tool 120, as shown in FIG. 13B, the syringe 121 and the injection needle 122 are removed from the transfer tool 120, and the injection needle 123 is also removed.

  Next, as shown in FIG. 13C, the cap member 125 of the needle holder 124 is attached to the upper part of the transfer tool 120. Due to this crowning operation, the portion existing in the cap member 125 of the double-ended needle 126 penetrates the rubber stopper 120 a at the top of the transfer tool 120. In this state, the protective cap 126a is removed, and the portion exposed to the outside of the double-ended needle 126 is the rubber on the upper part of the air feeding container 130 in the carry-out box 102 as shown in FIG. It penetrates through the plug part 130a.

  Here, the configuration of the pneumatic container 130 in the carry-out box 102 is the same as that of the transfer tool 120, and further, since the inside of the pneumatic container 130 is in a vacuum state, the sample S in the transfer tool 120 is placed. Moves quickly into the air carrier 130.

  When the movement of the sample is completed, the double-ended needle 126 is removed from the air-feeding container 130, and the sample S contained in the air-feeding container 130 is placed in the analysis chamber from the inside of the carry-out box 102 as shown in FIG. Airing the glove box, the work in the manipulator chamber 100 is completed.

  In the operation in the manipulator chamber 100 described above, the manipulator is configured so that the liquid sample S is not affected by the contaminants adhering to the manipulator M or the like before the operation, that is, so-called contamination does not occur. Careful attention is required for the worker A who uses M.

  When the work in the manipulator chamber 100 is performed by the AREVA method described above, the sample can be transferred to the glove box that is the analysis chamber without causing so-called contamination in the liquid sample for analysis.

  However, this AREVA method requires labor and time for the assembly work of the transfer tool 120 performed outside the manipulator chamber 100, and requires meticulous removal of the syringe 121 and the injection needle 123 from the transfer tool 120 using the manipulator M. There was a problem that work requiring attention was required. Furthermore, there is a problem that the waiting time until the sample S in the syringe 121 naturally falls into the transfer device 120 via the injection needle 122 is included in the work time.

  Further, every time the analysis sample is transported once, all of the parts shown in FIG. 11 become waste, so a large amount of waste is generated. There is also a problem that a large amount of radioactive waste is generated because it becomes a radioactive waste that is directly used in the processing stage and is difficult to handle.

  In order to solve the above problems, the present invention provides a cylindrical transfer tool body having an opening formed in the upper part, a cap member that can be attached to the upper part of the transfer tool body, and a funnel-shaped flow path. A top plate portion of the cap member such that the wide mouth portion of the funnel-shaped flow path member is located inside the cap member and the spout portion is located outside the top plate portion of the cap member. When the cap member is crowned on the upper part of the transfer tool body, the wide mouth part is located inside the transfer tool body, and the peripheral part of the wide mouth part extends over the entire circumference. It comprises a flow path member that is in close contact with the inner wall of the transfer tool body, and an injection needle that is attached to the spout portion of the flow path member. Here, the outer peripheral wall of the cap member may be formed with a collar having a diameter larger than that of the other part over the entire circumference, and further includes a protective cap for protecting the injection needle. A protruding portion that protrudes in the outer peripheral direction may be formed on the upper portion of the protective cap.

  According to the present invention, in a work in a manipulator chamber that is a work chamber, a sample can be transferred without causing so-called contamination, and the work can be performed easily and in a short time compared to the conventional case. Furthermore, the amount of radioactive waste generated in one transfer operation can be reduced as compared with the conventional case.

It is a perspective view which shows the structure of Example 1 of this invention. It is sectional drawing which shows the internal structure of Example 1 of this invention. It is a disassembled perspective view which shows the structure of Example 1 of this invention. It is explanatory drawing of the usage method of Example 1 of this invention. It is explanatory drawing of the usage method of Example 1 of this invention. It is explanatory drawing of the usage method of Example 1 of this invention. It is explanatory drawing of the usage method of Example 1 of this invention. It is explanatory drawing of the usage method of Example 1 of this invention. It is a perspective view which shows the structure of Example 2 of this invention. It is explanatory drawing of the transfer method of the conventional liquid sample. It is a perspective view which shows the components used for the transfer tool of the conventional liquid sample. It is explanatory drawing of the usage method of the transfer tool of the conventional liquid sample. It is explanatory drawing of the usage method of the transfer tool of the conventional liquid sample. It is explanatory drawing of the usage method of the transfer tool of the conventional liquid sample.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view showing the configuration of a first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the internal configuration, and FIG. 3 is an exploded perspective view.

  1 to 3, reference numeral 10 denotes a cylindrical transfer tool main body, and an opening 11 is formed on the upper part thereof. The shape of the transfer tool main body 10 does not have to be a complete cylindrical shape, and a tapered portion is provided so that the upper diameter is smaller than the lower diameter as shown in FIGS. A cylindrical shape may be sufficient.

  Reference numeral 20 denotes a cap member that can be detachably attached to the upper part of the transfer tool main body 10, and 21 is a top plate portion thereof. Moreover, the collar part 22 whose diameter is larger than another part is formed in the outer peripheral wall of the cap member 20 over the perimeter.

  As shown in FIG. 2, a funnel-shaped flow path member 30 is disposed on the top plate portion 21 of the cap member 20. The flow path member 30 is disposed on the top plate portion 21 so that the wide mouth portion 31 is located inside the cap member 20 and the spout portion 32 is located above and outside the top plate portion 21. ing. Furthermore, as shown in FIG. 2, in the state where the cap member 20 is crowned on the upper portion of the transfer body 10, the wide opening 31 of the flow path member 30 is located inside the transfer body 10, and the wide opening 31 The wide-mouthed portion 31 of the flow path member 30 is formed so that the peripheral edge portion of the channel member 30 is in close contact with the inner wall of the transfer body 10. In the first embodiment, the funnel-shaped flow path member 30 and the top plate portion 21 are integrally formed.

  An injection needle 40 is attached to the tip of the spout part 32 of the flow path member 30. Reference numeral 41 denotes a protective cap for protecting the injection needle 40.

  In the first embodiment configured as described above, the assembly operation is completed simply by attaching the cap member 20 to the transfer tool body 10 and mounting the injection needle 40 with the protective cover 41. The transfer device according to the first embodiment assembled in this way is carried into the transfer device carry-in box 102 in the manipulator chamber 100 shown in FIG. 4 from the outside of the manipulator chamber, which is a work chamber, as in the prior art. .

  Next, the operation procedure of the method for transferring the liquid sample in the manipulator chamber 100 using the first embodiment will be described with reference to the drawings.

  Here, as shown in FIG. 4, in the first embodiment, a “U” -shaped metal fitting 50 fixed in advance in the manipulator chamber 100, that is, on the wall surface of the work chamber, is installed in advance, and the transfer device body Ten mounting tables 60 are installed in advance.

  As shown in FIG. 5A, the “U” -shaped metal fitting 50 is fixed to the wall surface of the working chamber so that the two arm portions 51 and 52 extend in the horizontal direction. The interval between the two arm portions 51 and 52 is selected to be approximately equal to the diameter of the cap member 20. As shown in FIG. 5 (b), the mounting table 60 of the transfer body 10 is formed with a flange 61 into which the lower portion of the transfer body 10 can be fitted.

  First, the worker A shown in FIG. 4 preprocesses the original sample carried in from the site so that it can be analyzed, prepares a liquid sample to be sent to the analysis chamber, and prepares the liquid sample in a beaker. Work. Next, the worker carries the transfer device according to the first embodiment to the place where the “U” -shaped metal fitting 50 is installed, and the cap member 20 as shown in FIG. Is inserted between the two arm portions 51 and 52 so as to be positioned above the bracket 50.

  Next, as shown in FIG. 5 (b), the transfer body 10 is pulled downward and fitted into the flange 61 of the mounting table 60. In such a state, the cap member 20 is held in the air without being contaminated because the collar portion 22 is locked by the “U” -shaped metal fitting 50.

  Next, as shown in FIG. 6A, the worker A pours an appropriate amount of the sample S in the beaker B from the opening 11 of the transfer body 10, and as shown in FIG. The cap member 20 held in the air by the character-shaped metal fitting 50 is attached to the upper part of the transfer device body 10.

  After the cap member 20 is attached to the transfer body 10, the transfer body 10 is moved upward (see FIG. 7A), the protective cap of the injection needle 40 is removed (see FIG. 7B), As in the prior art, the injection needle 40 is passed through the rubber stopper 130a on the upper part of the air delivery container 130 in the carry-out box 102 (see FIG. 8A), and the inside is transferred into the air delivery container 130 in a vacuum state. The sample S in the vessel body 10 is moved.

  When the sample moves into the pneumatic container 130, the injection needle 40 is removed from the pneumatic container 130, and the sample S that has entered the pneumatic container 130 is taken out of the carry-out box 102 as shown in FIG. The work in the manipulator chamber 100 is completed by airing the glove box as the analysis chamber.

  As described above, according to the first embodiment, the manipulator chamber 100 can be used within a short period of time without performing a work requiring careful attention as in the past and without causing so-called contamination. Can be done.

  Furthermore, in the first embodiment, there is no element that causes so-called contamination other than when the pretreated liquid sample is transferred to the transfer body 10, and the syringe 121 must be operated for a long time while being exposed. The risk can be further reduced as compared with the conventional AREVA method which does not become necessary.

  As a result of experiments conducted by the present applicant, the work time from preparation to completion of the disposal work was about 8 minutes in the conventional method, but was about 3 minutes or less in the method of the first embodiment.

  Here, the radioactive waste generated at the stage when one transfer operation in the manipulator chamber 100 is completed is only the article shown in FIG. 3 when the transfer tool according to the present invention is used. On the other hand, in the conventional system, since most of the articles shown in FIG. 11 become radioactive waste, according to the present invention, the amount of radioactive waste can be reduced as compared with the conventional system.

  As shown in FIG. 9, if a protruding portion 41 a that protrudes in the outer peripheral direction is formed on the upper portion of the protective cap 40 of the injection needle 40 of the first embodiment described above, the protective cap 40 is used using the manipulator M. When removing the protective cap 40, the protective cap 40 can be removed more easily.

DESCRIPTION OF SYMBOLS 10 Transfer tool main body 11 Opening part 20 Cap member 21 Top plate part 22 Gutter part 30 Channel member 31 Wide mouth part 32 Spout part 40 Injection needle 41 Protection cap 41a Protrusion part 50 "U" -shaped metal fittings 51 and 52 Arm part 60 Mounting table 61 Saddle 100 Manipulator chamber 101 Carry-in box 102 Carry-out box 103 Transfer tool carry-in box A Worker B Beaker M Manipulator S Liquid sample

Claims (3)

A cylindrical transfer tool body having an opening formed in the upper part;
A cap member that can be crowned on the upper part of the transfer device body;
A funnel-shaped flow path member, wherein the funnel-shaped flow path member has a wide mouth portion located inside the cap member and a spout portion located outside and above the top plate portion of the cap member. When the cap member is attached to the upper part of the transfer tool body, the wide mouth part is located inside the transfer tool body, and the peripheral part of the wide mouth part is the entire part thereof. A flow path member that closely adheres to the inner wall of the transfer tool body over the circumference;
A liquid sample transfer device comprising: an injection needle attached to the spout portion of the flow path member.   2. The liquid sample transfer device according to claim 1, wherein a flange having a diameter larger than that of the other portion is formed on the outer peripheral wall of the cap member over the entire periphery.   2. The liquid sample transfer device according to claim 1, further comprising a protective cap for protecting the injection needle, wherein a protruding portion is formed on the upper portion of the protective cap so as to protrude in an outer peripheral direction. .

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