DE1234302B - Protection circuit against electromagnetic interference, especially for the safety system of nuclear reactors - Google Patents
Protection circuit against electromagnetic interference, especially for the safety system of nuclear reactorsInfo
- Publication number
- DE1234302B DE1234302B DES88128A DES0088128A DE1234302B DE 1234302 B DE1234302 B DE 1234302B DE S88128 A DES88128 A DE S88128A DE S0088128 A DES0088128 A DE S0088128A DE 1234302 B DE1234302 B DE 1234302B
- Authority
- DE
- Germany
- Prior art keywords
- blind
- channels
- protection circuit
- measuring
- electromagnetic interference
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/36—Control circuits
-
- 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
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Measurement Of Radiation (AREA)
Description
BUNDESREPUBLIK DEUTSCHLAND DEUTSCHES wXw PATENTAMTFEDERAL REPUBLIC OF GERMANY GERMAN wXw PATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. CL:Int. CL:
HOIhHOIh
H 02 h
Deutsche Kl.: 21 c - 68/50 H 02 h
German class: 21 c - 68/50
Nummer: 1 234 302Number: 1 234 302
Aktenzeichen: S 88128 VIIIb/21 cFile number: S 88128 VIIIb / 21 c
Anmeldetag: 31. Oktober 1963 Filing date: October 31, 1963
Auslegetag: 16. Februar 1967Opened on: February 16, 1967
Zur Überwachung von Atomreaktoren und anderen Anlagen, die für die Umgebung gefährliche Betriebszustände erreichen können, ist eine Anzahl von sogenannten Sicherheitssystemen bekanntgeworden. Hierbei werden die wichtigsten Meßwerte von mehreren gleichartigen Meßgeräten erfaßt und auf unabhängigen Meßkanälen an eine Auswerteeinrichtung gegeben. Diese löst die Abschaltautomatik aus, wenn mehrere Meßkanäle eine für den Betrieb der Anlage gefährliche Abweichung vom Sollwert anzeigen. Am häufigsten wird das Zwei-von-Drei-System verwendet, bei dem dann abgeschaltet wird, wenn zwei oder drei Meßkanäle eine Grenzwertüberschreitung anzeigen. Die Meßkanäle sind vielfach sehr hochohmig und daher gegen Störungen empfindlich. Dies trifft insbesondere zu für die mit Strahlungsmeßgeräten verbundenen Kanäle von Reaktoren und für Thermoelementmeßkanäle mit kleinen Temperaturmeßbereichen. Hier besteht die Gefahr, daß elektromagnetische Einstreuungen gleichzeitig auf mehrere Meßkanäle wirken und die Abschaltautomatik anspricht. Die Anlage wird infolgedessen abgeschaltet, ohne daß ein Gefahrfall gegeben ist.For monitoring nuclear reactors and other systems that are dangerous for the environment A number of so-called safety systems have become known to be able to reach operating states. The most important measured values are recorded and recorded by several measuring devices of the same type independent measuring channels given to an evaluation device. This triggers the automatic switch-off, if several measuring channels indicate a deviation from the setpoint that is dangerous for the operation of the system. Most often the two-out-of-three system is used, in which there is then a shutdown, if two or three measuring channels indicate a limit value violation. The measuring channels are multiple very high resistance and therefore sensitive to interference. This applies in particular to the reactor channels connected to radiation measuring devices and for thermocouple measuring channels with small temperature measuring ranges. There is a danger here that electromagnetic interference act simultaneously on several measuring channels and the automatic switch-off appeals to. As a result, the system is switched off without any danger being given.
Der Erfindung liegt die Aufgabe zugrunde, eine Schutzschaltung anzugeben, die ein Ansprechen des Sicherheitssystems bei elektromagnetischen Einstreuungen verhindert. Gemäß der Erfindung wird dies dadurch erreicht, daß mindestens ein in der Nähe der Leitungszüge der Meßkanäle verlaufender, nicht mit Meßeinrichtungen verbundener Leitungszug (Blindkanal) über den Meßkanälen entsprechende Verstärkereinrichtungen im Sinne einer Blockierung auf die Abschaltautomatik wirkt, derart, daß deren Auslösung in an sich bekannter Weise unterbleibt, wenn Meßkanäle und Blindkanal das gleiche Signal führen.The invention is based on the object of specifying a protective circuit that enables the Prevents the safety system in the event of electromagnetic interference. According to the invention this is achieved by having at least one in the vicinity of the lines of the measuring channels, Cable run not connected to measuring devices (blind duct) over the measuring ducts Amplifier devices in the sense of a blocking acts on the automatic switch-off in such a way that their There is no triggering in a manner known per se if the measuring channels and the blind channel have the same signal to lead.
Es ist bei digitalbinären Steuerungen mit Halbleiterelementen bekannt, Maßnahmen vorzusehen, um innere Fehler der Schaltungen, d. h. Defektwerden von Halbleiterelementen auszuschalten, so daß hierdurch nachgeschaltete Stellglieder nicht beeinflußt werden. Störungen von außen, insbesondere elektromagnetische Einstreuungen, können sich aber auch hier auswirken und zu Fehlschaltungen führen.In the case of digital binary controls with semiconductor elements, it is known to provide measures internal faults in the circuits, d. H. To eliminate defects in semiconductor elements, see above that downstream actuators are not affected. External interference, in particular Electromagnetic interference, however, can also have an effect here and lead to incorrect switching.
Um zu vermeiden, daß infolge von Gerätefehlern in einem oder mehreren Blindkanälen die Abschaltautomatik blockiert wird, können auch die Blindkanäle zu einem Sicherheitssystem, z. B. dem Zweivon-Drei-System zusammengefaßt werden. Die Blokkierung der Abschaltautomatik wird in diesem Fall nur dann wirksam, wenn zwei oder drei der Blindkanäle die Anwesenheit einer Störung melden.In order to avoid the automatic switch-off in one or more blind channels as a result of device errors is blocked, the blind channels to a security system, e.g. B. the two-of-three system be summarized. The automatic switch-off is blocked in this case only effective if two or three of the blind channels report the presence of a fault.
Schutzschaltung gegen elektromagnetische
Einstreuungen, insbesondere für das
Sicherheitssystem von AtomreaktorenProtection circuit against electromagnetic
Interferences, especially for the
Nuclear reactor safety system
Anmelder:Applicant:
Siemens Aktiengesellschaft, Berlin und München, München 2, Wittelsbacherplatz 2Siemens Aktiengesellschaft, Berlin and Munich, Munich 2, Wittelsbacherplatz 2
Als Erfinder benannt:Named as inventor:
Dipl.-Ing. Dr. Ludwig Merz, MünchenDipl.-Ing. Dr. Ludwig Merz, Munich
Der Aufwand an Blindkanälen kann gemäß einer Weiterbildung der Erfindung wesentlich verringert werden, wenn jeder Blindkanal über ein Zeitrelais auf die Abschaltautomatik wirkt, das den Blindkanal abschaltet, wenn die Störung länger andauert. Dieser Maßnahme liegt die Überlegung zugrunde, daß elektromagnetische Einstreuungen immer nur kurzzeitig wirken. Mit dem Zeitrelais kann eine Signaleinrichtung verbunden sein, die anspricht, wenn der Blindkanal ein länger andauerndes Signal gibt. Dies ist dann ein Zeichen für das Vorliegen einer Störung im Blindkanal oder in den nachgeschalteten Verstärkereinrichtungen. According to a further development of the invention, the expenditure on blind channels can be significantly reduced when each blind channel acts on the automatic switch-off via a timing relay that affects the blind channel switches off if the fault persists. This measure is based on the idea that electromagnetic Interferences only have a short-term effect. The timing relay can be used as a signaling device be connected, which responds when the blind channel gives a long-lasting signal. This is then a sign of the presence of a fault in the blind channel or in the downstream amplifier equipment.
Es ist bekannt, das Sicherheitssystem von Reaktoren in bestimmten Zeitabständen mit Hilfe von Prüfimpulsen zu überwachen. Die gleiche Überwachung kann auch für die gemäß der vorliegenden Erfindung vorgeschlagenen Blindkanäle angewendet werden.It is known that the safety system of reactors at certain time intervals with the help of Monitor test pulses. The same monitoring can also be carried out for those according to the present Invention proposed blind channels are used.
Claims (3)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES88128A DE1234302B (en) | 1963-10-31 | 1963-10-31 | Protection circuit against electromagnetic interference, especially for the safety system of nuclear reactors |
GB43853/64A GB1070500A (en) | 1963-10-31 | 1964-10-27 | Improvements in or relating to the protection of control arrangements from undesired or stray electromagnetic radiation |
FR992976A FR1412810A (en) | 1963-10-31 | 1964-10-28 | Protection device against electromagnetic interference, in particular for the safety system of nuclear reactors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES88128A DE1234302B (en) | 1963-10-31 | 1963-10-31 | Protection circuit against electromagnetic interference, especially for the safety system of nuclear reactors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1234302B true DE1234302B (en) | 1967-02-16 |
Family
ID=7514252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES88128A Pending DE1234302B (en) | 1963-10-31 | 1963-10-31 | Protection circuit against electromagnetic interference, especially for the safety system of nuclear reactors |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1234302B (en) |
GB (1) | GB1070500A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1112506B (en) * | 1959-08-29 | 1961-08-10 | Drahomir Sokol | Process for the production of potassium terephthalate by thermal rearrangement of the dipotassium salts of phthalic or isophthalic acid or their mixtures |
-
1963
- 1963-10-31 DE DES88128A patent/DE1234302B/en active Pending
-
1964
- 1964-10-27 GB GB43853/64A patent/GB1070500A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1112506B (en) * | 1959-08-29 | 1961-08-10 | Drahomir Sokol | Process for the production of potassium terephthalate by thermal rearrangement of the dipotassium salts of phthalic or isophthalic acid or their mixtures |
Also Published As
Publication number | Publication date |
---|---|
GB1070500A (en) | 1967-06-01 |
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