US3350565A - Process for the removal in a small volume of liquid samples placed in containers and device for the practical application of the process - Google Patents

Process for the removal in a small volume of liquid samples placed in containers and device for the practical application of the process Download PDF

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Publication number
US3350565A
US3350565A US438467A US43846765A US3350565A US 3350565 A US3350565 A US 3350565A US 438467 A US438467 A US 438467A US 43846765 A US43846765 A US 43846765A US 3350565 A US3350565 A US 3350565A
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US
United States
Prior art keywords
containers
removal
liquid samples
liquid
small volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US438467A
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English (en)
Inventor
Calame-Longjean Andre
Palli Claude
Guillet Henri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
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Publication of US3350565A publication Critical patent/US3350565A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0093—Radioactive materials
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/20—Disposal of liquid waste
    • G21F9/22—Disposal of liquid waste by storage in a tank or other container
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1062—Sampling under constant temperature, pressure, or the like
    • G01N2001/1081—Storing samples under refrigeration

Definitions

  • the present invention relates to the removal, in a small volume, of samples of noxious solutions which are placed in containers.
  • the invention is more especially concerned with the removal of samples of radioactive solutions after these latter have been analyzed in a pilot plant, said samples being, for example, placed within flasks of polythene which are in turn enclosed within capped transporter tubes which are also formed of polythene, said transporter tubes being employed for transferring samples from the hot cells to the laboratories, then from the laboratories to a decontamination plant for conditioning and subsequent removal.
  • the sample flasks When the analyses to be performed have been completed, the sample flasks must be opened and their contents removed. Since the rubber plug which closes each sample flask is secured by means of an aluminium capsule which is crimped-on for reasons of safety, the flasks can be emptied only by means of a mechanical process which consists either in removing the caps, in splitting open the flasks or in an unclamping operation. It is then necessary to decontaminate the interior of the flasks which have contained a radioactive liquid, then to condition the flasks, containers and caps for subsequent removal. It is in fact essential to separate the radioactive liquids which are eliminated in the form of liquid efiiuents from the solid wastes which are stored in special drums prior to separate processing.
  • the primary aim of this invention is to provide a process for the removal of waste products which conforms to a wide range of practical requirements more effectively than has been possible heretofore, especially insofar as the disadvantages referred-to in the foregoing are overcome by said process.
  • the invention mainly consists of a process in which liquid samples and their contaminated containers are cooled, prior to breaking-down, to a temperature such that said containers are embrittled and the activated liquids present therein are frozen, the fragments resulting from the breaking-down or crushing operation being then reheated, washed, conditioned and discharged in a storage drum.
  • the invention also consists of a device for the practical application of the process comprising successively a compressed-air conduit for the supply of containers, an inclined ramp, a cooler through which liquid nitrogen is circulated, a crusher, a washing tank, a device for conditioning solid wastes, means for discharging solid wastes and liquid efiluents, the complete apparatus being disposed within a steel-walled, leak-tight enclosure which is lead-shielded and fittted with viewing windows, handling grabs, access doors, lock chambers, lighting means and all other known arrangements which are necessary.
  • the invention finally consists, aside from these main arrangements, in certain other arrangements which are preferably employed at the same time and which are to e considered separately or in conbination, viz:
  • said containers are formed of polythene
  • said containers are brought within said cooler to a temperature of approximately C.
  • said device additionally comprises, within said steelwalled enclosure, a lifting apparatus which serves for emergency operation in the event of failure in the normal supply of containers.
  • the active liquids being frozen at the time of crushing
  • FIG. 1 is a vertical section view along line a-a of FIG. 2 and showing a device in accordance with the invention
  • FIG. 2 is a vertical sectional view along line bb of FIG. 1, with a fragmentary sectional view of the crusher.
  • the complete device in accordance with the invention is placed within a steel- Walled enclosure 1 which is in turn surrounded by a lead shield 2.
  • the full containers such as the container 3 are admitted at 4 at the top of the enclosure 1 and are directed by means of an inclined ramp 5 towards a cooler 6 in which they remain for a certain length of time.
  • Liquid nitrogen which is circulated through said cooler is admitted through the tube 7 and discharged through the tube 8 and maintains as a result of the evaporation thereof a temperature of approximately -150 C, within the cooler.
  • the containers formed of polythene which has thus been embrittled are directed together with their frozen contents towards a crusher 9 provided with two series of discs such as 10 which are designed to crush all the containers and reduce them to small fragments.
  • the discs such as the disc 10 are driven in rotation by a motor 11 through the intermediary of a driving belt 12, a flywheel 13 and a shaft 14 which passes proportion 3 through the shield 2 and the enclosure 1 in leak-tight manner by virtue of seals 15, 16 and 17.
  • the crushed fragments fall through a funnel 18 placed beneath the crusher 9 into a washing tank 19 in which the liquid effluents are then separated from the solid wastes.
  • Three water-supply pipes such as the pipe 20 and acidsupply pipes such as the pipes 21 and 22 terminate within the top portion of said tank 19 and, as will be apparent, also pass through the enclosure 1 in leak-tight manner.
  • Compressed air is injected at 23 into the bottom outlet of the tank 19 so as to complete the washing of the crushed containers by agitation.
  • the liquid efiluents will be discharged through the pipe 24 which is fitted with a filter cock 25.
  • the solid wastes which are considerably reduced in volume, will be discharged through a conduit 27 by means of compressed air which is admitted through an intake 26.
  • a capping device 28 and a container lift 29 which will serve for emergency operation in the event of failure in the normal supply of containers at 4.
  • the present invention is not limited in any sense to the example of construction or to the mode of application which have been more especially described and illustrated but is intended, on the contrary, to include within its scope all alternative forms, particularly in regard to the removal of any liquid 3, samples of a hazardous but not necessarily radioactive nature which are placed in containers.
  • a device for carrying out the process of claim 1 comprising a compressed air conduit for the supply of containers, and inclined ramp connected to said conduit, a cooler through which liquid nitrogen is circulated receiving containers from said ramp, a crusher receiving containers from said cooler, a washing'tank receiving fragments from said crusher, means for conditioning solid wastes from said washing tank, means for discharging solid wastes and liquid effluents from said containing means, said device being disposed within a steel walled, leak tight, lead shielded enclosure and viewing windows, handling grabs, access doors, lock chambers and lighting means for said enclosure.
  • a device as described in claim 4 including lifting apparatus in said enclosure for emergency operation on failure of normal supply of containers.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
US438467A 1964-03-06 1965-03-02 Process for the removal in a small volume of liquid samples placed in containers and device for the practical application of the process Expired - Lifetime US3350565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR966509A FR1401234A (fr) 1964-03-06 1964-03-06 Procédé d'élimination sous faible volume d'échantillons liquides placés dans des containers et dispositif pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
US3350565A true US3350565A (en) 1967-10-31

Family

ID=8824957

Family Applications (1)

Application Number Title Priority Date Filing Date
US438467A Expired - Lifetime US3350565A (en) 1964-03-06 1965-03-02 Process for the removal in a small volume of liquid samples placed in containers and device for the practical application of the process

Country Status (11)

Country Link
US (1) US3350565A (es)
BE (1) BE660164A (es)
CH (1) CH432668A (es)
DE (1) DE1277024B (es)
ES (1) ES310148A1 (es)
FR (1) FR1401234A (es)
GB (1) GB1095466A (es)
IL (1) IL23084A (es)
LU (1) LU48078A1 (es)
NL (1) NL6502574A (es)
SE (1) SE315344B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2776583C1 (ru) * 2021-11-04 2022-07-22 Федеральное государственное бюджетное учреждение науки Институт проблем безопасного развития атомной энергетики Российской академии наук (ИБРАЭ РАН) Способ концентрирования неорганических жидких радиоактивных отходов

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2620636C3 (de) * 1976-05-10 1986-01-09 Alkem Gmbh, 6450 Hanau Einrichtung zur Einführung einer kraftübertragenden Welle in einen Handschuhbehälter mit kontaminierter Atmosphäre
ATE173T1 (de) * 1978-12-29 1981-09-15 Stablex A.G. Verbesserungen in der behandlung gefaehrlicher abfallstoffe.
DE2916203A1 (de) * 1979-04-21 1980-11-06 K E W A Kernbrennstoff Wiedera Verfahren zur behandlung von brennbaren, festen, radioaktiven abfaellen
US4641789A (en) * 1983-12-27 1987-02-10 Combustion Engineering, Inc. Compactor enhancement system
IT1187097B (it) * 1985-06-12 1987-12-16 Protex & Franco Giuseppe Merca Procedimento e relativo impianto per la decontaminazione dei rifiuti solidi contaminati da sostanze radioattive o tossiche e nocive in in genere
JPS6227697A (ja) * 1985-07-29 1987-02-05 動力炉・核燃料開発事業団 放射性物質含有廃液の処理方法および装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2776583C1 (ru) * 2021-11-04 2022-07-22 Федеральное государственное бюджетное учреждение науки Институт проблем безопасного развития атомной энергетики Российской академии наук (ИБРАЭ РАН) Способ концентрирования неорганических жидких радиоактивных отходов

Also Published As

Publication number Publication date
NL6502574A (es) 1965-09-07
ES310148A1 (es) 1966-05-01
DE1277024B (de) 1968-09-05
GB1095466A (es) 1900-01-01
FR1401234A (fr) 1965-06-04
BE660164A (es) 1965-06-16
IL23084A (en) 1968-08-22
CH432668A (fr) 1967-03-31
LU48078A1 (es) 1965-04-26
SE315344B (es) 1969-09-29

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