DE2049570A1 - Demountable shielding blocks - for nuclear reactors - Google Patents
Demountable shielding blocks - for nuclear reactorsInfo
- Publication number
- DE2049570A1 DE2049570A1 DE19702049570 DE2049570A DE2049570A1 DE 2049570 A1 DE2049570 A1 DE 2049570A1 DE 19702049570 DE19702049570 DE 19702049570 DE 2049570 A DE2049570 A DE 2049570A DE 2049570 A1 DE2049570 A1 DE 2049570A1
- Authority
- DE
- Germany
- Prior art keywords
- nuclear reactors
- demountable
- shielding
- water
- water glass
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C11/00—Shielding structurally associated with the reactor
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Revetment (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Abschirmelemente für Atomkernreaktoren (Zusatz zu Patent . ... ... (Akt.Z.: P 19 33 750,9 - VPA 69/1073) Die vorliegende Erfindung bezieht sich entsprechend dem Hauptpatent ..... . (Aktz.: P 19 33 750.9 - VPA 69/1073) auf Abschirmelemente für Atomkernreaktoren, insbesondere zum Ausfüllen von Öffnungen und Durchbrüchen in Trenn- und Abschirmwänden eines Reaktorgebäudes, die nach Art von Setzsteinen mit prismatischem Querschnitt ausgebildet sind und eine formstabile, mindestens das Eigengewicht haltende Außenschicht sowie eine sandartige Innenstruktur aufweisen. Solche Elemente sind einerseits leicht montier- und demontierbar und bedeuten andererseits beim Herausschleudern keine Gefahr für die Umgebung, da sie beim Auftreffen auf einen festen Gegenstand zerbröckeln. Auf diese Weise bleiben im Palle eines Reaktorunfalles wichtige Rohrleitungen und andere Anlagenteile, die nicht direkt betroffen sind, vor einer indirekten Beschädigung bewahrt. Für den Au"-bau eines derartigen Setzsteines oder Abschirmelementes können verschiedenartigste Materialien verwendet werden. Weitere Entwicklungen auf diesem Gebiet haben ergeben, daß die Verwendung von Bariumsulfat für diesen Zweck besonders vorteilhaft ist.Shielding elements for nuclear reactors (addendum to patent. ... ... (Akt.Z .: P 19 33 750.9 - VPA 69/1073) The present invention relates accordingly the main patent ...... (File number: P 19 33 750.9 - VPA 69/1073) on shielding elements for atomic nuclear reactors, especially for filling openings and breakthroughs in dividing and shielding walls of a reactor building, which are like setting stones are designed with a prismatic cross-section and a dimensionally stable, at least have an outer layer that holds their own weight and a sand-like inner structure. Such elements are on the one hand easy to assemble and dismantle and on the other hand mean when thrown out, there is no danger to the environment, as they will hit the ground crumble a solid object. In this way, stay in the event of a reactor accident important pipelines and other system parts that are not directly affected, protected from indirect damage. For the construction of such a setting stone or shielding element, a wide variety of materials can be used. Further developments in this area have indicated that the use of barium sulfate is particularly advantageous for this purpose.
Erfindungsgemäß besitzt die Außenschicht derartiger Abschirmelemente eine Wandstärke von etwa 10 mm und besteht aus mit 4 bis 7 % Wasser sowie 0,5 bis 1 o/o Wasserglas verpreßtem Bariumsulfatpulver. Die Innenstrrtur besteht ebenfalls aus Bariumsulfatpulver und hat einen Wassergehalt von etwa 0,5 %.According to the invention, the outer layer has such shielding elements a wall thickness of about 10 mm and consists of 4 to 7% water and 0.5 to 1 o / o water glass of compressed barium sulfate powder. The internal structure also exists made of barium sulfate powder and has a water content of about 0.5%.
In den beiliegenden Figuren, die jenen des Hauptpatentes entsprechen, ist Anordnung und Aufbau des AbschirLaelementes dargestellt. Seine Herstellung ist verhältnismäßig einfach. Der prismatische Teil sowie die Stirn- und Bodenseite werden in Stahlformen getrennt voneinander gepreßt, sodann wird die Bodenwand nilt Wasserglas aufgeklebt, der Hohlraum mit Bariumbarytpulver gefüllt und anschließend die obere Stirnwand ebenfalls wieder mit Wasserglas aufgeklebt. Zur leichteren Handhabung dieser Steine, die an sich in dieser Form bereits die notwendige Festigkeit besitzen, ist es zweckmäßig, sie noch mit einer Kunstharzschicht, z.B. einer Epoxidharzschicht, von etwa 1 mm Dicke zu überziehen. Dieses Oxidharz, z.B. Araldit, ist strahlenbeständig bis etwa 1 . 109 rad, so daß eine genügende Haltbarkeit gewährleistet ist, da die Abschirmwände, wie in Fig. 3 dargestellt, nur eine Strahlendosis von etwa 20 000 bis 40 000 rad pro Stunde erhalten. Mit derartigen Steinen können Wände bis zu einer Höhe von etwa 2 bis 3 mm aufgeschichtet werden. Für höhere Wände können etwas festere Steine Verwendung finden, die z.B. mit etwas erhöhten Wandstärken ausgerüstet sind.In the enclosed figures, which correspond to those of the main patent, the arrangement and structure of the shielding element is shown. Its manufacture is relatively easy. The prismatic Part as well as the forehead and bottom side are pressed separately from each other in steel molds, then the Water glass is glued to the bottom wall, the cavity is filled with barium baryta powder and then the upper end wall also glued on again with a glass of water. For easier handling of these stones, which in itself already have the have the necessary strength, it is advisable to coat them with a synthetic resin layer, e.g. an epoxy resin layer, about 1 mm thick. This oxide resin, e.g. araldite, is radiation resistant up to about 1. 109 rad, so that a sufficient Durability is guaranteed because the shielding walls, as shown in Fig. 3, only received a radiation dose of about 20,000 to 40,000 rads per hour. With such Stones can be piled up walls up to a height of about 2 to 3 mm. For higher walls, more solid stones can be used, e.g. with something are equipped with increased wall thicknesses.
Außerdem ist es dann möglich, innerhalb der Wand ein Stützgerüst einzufügen, was beim Wegschleudern der Steine infolge eines Unfalles stehen bleibt.In addition, it is then possible to insert a support frame inside the wall, what remains when the stones are thrown away as a result of an accident.
3 Figuren 3 Patentansprüche3 Figures 3 claims
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2049570A DE2049570C3 (en) | 1969-07-03 | 1970-10-09 | Shielding elements for nuclear reactor systems |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691933750 DE1933750C3 (en) | 1969-07-03 | Shielding element for nuclear reactor systems | |
| DE2049570A DE2049570C3 (en) | 1969-07-03 | 1970-10-09 | Shielding elements for nuclear reactor systems |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2049570A1 true DE2049570A1 (en) | 1972-04-20 |
| DE2049570B2 DE2049570B2 (en) | 1979-06-07 |
| DE2049570C3 DE2049570C3 (en) | 1980-02-14 |
Family
ID=25757589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2049570A Expired DE2049570C3 (en) | 1969-07-03 | 1970-10-09 | Shielding elements for nuclear reactor systems |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2049570C3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT405773B (en) * | 1996-05-08 | 1999-11-25 | Hascic Wladimir Dr | Radiation-shielding material for gamma-rays and neutrons - contains barium sulphate as gamma-absorber, boron nitride as neutron absorber and optionally active carbon, graphite and boron carbide |
-
1970
- 1970-10-09 DE DE2049570A patent/DE2049570C3/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT405773B (en) * | 1996-05-08 | 1999-11-25 | Hascic Wladimir Dr | Radiation-shielding material for gamma-rays and neutrons - contains barium sulphate as gamma-absorber, boron nitride as neutron absorber and optionally active carbon, graphite and boron carbide |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2049570B2 (en) | 1979-06-07 |
| DE2049570C3 (en) | 1980-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| EHZ | Patent of addition ceased/non-payment of annual fee of parent patent |