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(12) Patent Application: | (11) CA 2205947 |
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(54) English Title: | METHOD FOR REUSE OF CONTAMINATED CONCRETE |
(54) French Title: | METHODE POUR REUTILISER DU BETON CONTAMINE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 1997-05-23 |
(41) Open to Public Inspection: | 1997-11-30 |
Examination requested: | 1997-05-23 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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A method for minimizing waste volumes from the demolition
of radiologically and/or chemically contaminated concrete
facilities by using engineering techniques to separate
contaminated from uncontaminated fractions and/or by reusing the
contaminated concrete for manufacture of waste storage or
disposal containers. Explosive demolition is used to either
selectively remove contaminated surface layers of concrete from
underlying uncontaminated concrete (where the contamination is
confined to the surface layers), or, where the contamination is
throughout the concrete, to reduce contaminated concrete into
pieces of an appropriate size for use as manufacturing aggregate.
The balance of the concrete structure can alternatively be
demolished using standard techniques if underlying concrete is
clean, and the resulting rubble free released for recycle or
disposal. When required, the concrete pieces are processed
through a concrete crusher until the appropriate aggregate size
is achieved. The recycled and previously regulated aggregate is
then used in manufacturing of storage or disposal containers,
cells, etc. for nuclear and/or hazardous waste and material, thus
reducing waste volumes and costs resulting from the
decommissioning of nuclear (or similar chemical processing)
facilities.
Méthode pour réduire au minimum les volumes de déchets provenant de la démolition d'installations radiologiques et (ou) chimiques en béton contaminé, grâce à des techniques permettant de séparer les fractions contaminées des fractions non contaminées et (ou) de réutiliser le béton contaminé pour la fabrication de contenants de stockage ou d'élimination des déchets. La démolition à l'explosif sert soit à éliminer sélectivement les couches de béton superficielles contaminées du béton sous-jacent non contaminé (là où la contamination est confinée aux couches de surface), ou, lorsque la contamination traverse toute l'épaisseur de béton, à réduire le béton contaminé en morceaux de taille appropriée pour servir comme agrégats industriels. Le reste de la structure de béton peut aussi être démoli à l'aide de techniques normalisées, si le béton sous-jacent n'est pas contaminé; les gravats résultants peuvent alors être recyclés ou éliminés. On peut, selon les besoins, faire passer les morceaux de béton dans un concasseur pour béton jusqu'à obtention de la taille d'agrégat appropriée. L'agrégat recyclé et de taille voulue est ensuite utilisé pour la production de contenants de stockage ou d'élimination, de compartiments, etc. pour matériaux et déchets nucléaires et (ou) dangereux, ce qui réduit le volume de déchets et les coûts résultant du démantèlement des installations nucléaires (ou d'unités chimiques de même type).
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 2205947 was not found.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: IPC expired | 2022-01-01 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: Dead - No reply to s.30(2) Rules requisition | 2001-08-10 |
Application Not Reinstated by Deadline | 2001-08-10 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2001-05-23 |
Inactive: Abandoned - No reply to s.30(2) Rules requisition | 2000-08-10 |
Inactive: S.30(2) Rules - Examiner requisition | 2000-04-10 |
Amendment Received - Voluntary Amendment | 1999-11-26 |
Inactive: S.30(2) Rules - Examiner requisition | 1999-10-13 |
Application Published (Open to Public Inspection) | 1997-11-30 |
Inactive: IPC assigned | 1997-09-10 |
Classification Modified | 1997-09-10 |
Inactive: IPC assigned | 1997-08-25 |
Inactive: IPC assigned | 1997-08-25 |
Classification Modified | 1997-08-25 |
Inactive: First IPC assigned | 1997-08-25 |
Letter Sent | 1997-07-29 |
Filing Requirements Determined Compliant | 1997-07-29 |
Inactive: Filing certificate - RFE (English) | 1997-07-29 |
Inactive: Applicant deleted | 1997-07-25 |
Application Received - Regular National | 1997-07-25 |
Request for Examination Requirements Determined Compliant | 1997-05-23 |
All Requirements for Examination Determined Compliant | 1997-05-23 |
Abandonment Date | Reason | Reinstatement Date |
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2001-05-23 |
The last payment was received on 2000-05-09
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Please refer to the CIPO Patent Fees web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - standard | 1997-05-23 | ||
Registration of a document | 1997-05-23 | ||
Request for examination - standard | 1997-05-23 | ||
MF (application, 2nd anniv.) - standard | 02 | 1999-05-24 | 1999-05-05 |
MF (application, 3rd anniv.) - standard | 03 | 2000-05-23 | 2000-05-09 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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THE BABCOCK & WILCOX COMPANY |
THE BABCOCK & WILCOX COMPANY |
Past Owners on Record |
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CHARLES PAUL PIETSCH |
JOHN BERNARD MEYERS |
RICHARD SEYMOUR KINGSLEY |
TIMOTHY CARTER MARKS |