ML20117J220
| ML20117J220 | |
| Person / Time | |
|---|---|
| Site: | University of Virginia |
| Issue date: | 05/28/1996 |
| From: | VIRGINIA, UNIV. OF, CHARLOTTESVILLE, VA |
| To: | |
| Shared Package | |
| ML20117J218 | List: |
| References | |
| NUDOCS 9605310023 | |
| Download: ML20117J220 (5) | |
Text
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UVAR Tech. Specs.
Objective: As regards use of this term in the Technical Specifications, it is a statement tha,t indicates the purpose of the specifications.
On Call: To be on call refers to an individual who (1) has been specifically -
designated and the designation is known to the operator on duty, (2) keeps the operator on duty informed of where he may be contacted and the phone number, and (3) is capable of getting to the Reactor Facility within a reasonable time under nonnal conditions (e.g., approximately 30 min).
Operable: A component or system is operable when it is capable of performing its intended function in a normal manner.
Operatinc: A component or system is operating when it is performing its intended function in a normal manner.
Protective Actic.n: Protective action is the initiation of a signal or the operation of equipment within the reactor safety system in response to a variable or condition of the reactor heving reached a specific limit.
(1) channel ievel. At the protective instrument channel level, protective action is the generation and transmission of a trip signal indicating that a reactor variable has reached a specified limit.
(2) subsystem level. At the protective instrument subsystem level, protective action is the generation and transmission of a trip signal indicating that a specified limit has been reached, a
NOTF; Protective action at this level would lead to the operation of the safety shutdown equipment to immediately shut down the reactor.
(3) instrument system level. At the protective instrument system level, protective action is the generation and transmission of the command signal for the safety shutdown equipment to operate.
(4) safety system level. At the reactor safety system level, protective action is the operation of sufficient equipment to immediately shut down the reactor.
Reactivity Limits: Reactivity limits are referenced to an average pool temperature of less than 90" F with the effect of xenon poisoning on core reactivity accounted for if greater than or equal to 0.075. The reactivity worth of samarium in the core will not be included in reactivity limits. The reference core condition will be known as the cold, xenon free critical condition.
Reactivity Worth of an Experiment: The reactivity worth of an experiment is the value of the reactivity change that results from the experiment being inserted into or removed from its intended position.
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Amendment No. 23
UVAR Tech. Specs.
Reactor Operatine (operations operated....): The reactor is operating when it is not shutdown.
Reactor Operator: An NRC-licensed reactor operator is an individualwho is certified by the NRC and the reactor administration to manipulate the controls of the UVAR reactor.
Reactor Safety Systems: Reactor safety systems are those systems, including their associated input channels, which are designed to initiate automatic reactor protection or to provide information for initiation of manual protective action.
Reactor Secured: The reactor is secured when the following conditions exist:
a.
The reactor is shutdown.
- b. The console key is in the OFF position and is removed from the lock, and No work is in progress involving core fuel, core structure, installed control c.
rods, installed experiments or experimental facilities with a reactivity worth greater than 0.605, or control rod drives unless they are physically decoupled from the control rods.
Reactor Shutdown: The reactor is shut down when all installed shim rods are seated or there are only six or fewer fuel elements on the grid plate.
Reactor Staff: The Reactor Director and all personnel administratively reporting i
to him.
Regulatine Rod: The regulating rod is a control rod of low reactivity worth fabricated from stainless steel and used primarily to maintain an intended power level. The regulating rod need not have scram capability. The rod may be controlled by the operator with a manual switch or by the automatic seno-controller.
Reportable Occurrence: A reportable occurrence is any of the conditions described in Section 6.6.2 of these specifications.
7 Amendment No. 23
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" Red lined" pages i
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UVAR Tech. Specs.
Obiective: As regards use of this term in the Technical Specifications, it is a statement that indicates the purpose of the specifications.
On Call: To be on call refers to an individual who (1) has been specifically designated and the designation is known to the operator on duty, (2) keeps the operator on duty informed of where he may be contacted and the phone number, and (3) is capable of getting to the Reactor Facility within a reasonable time under normal conditions (e.g., approximately 30 min).
Operab!e: A component or system is operable when it is capable of performing its intended function in a normal manner.
Oneratinc: A component or system is operating when it is performing its intended function in a normal manner.
Protective Action: Protective action is the initiation of a signal or the operation of equipment within the reactor safety system in response to a variable or condition of the reactor having reached a specific limit.
(1) channel level. At the protective instrument channel level, protective action is the generation and transmission of a trip signal indicating that a reactor variable has
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reached a specified limit.
(2) subsystem level. At the protective instrument subsystem level, protective action is the generation and transmission of a trip signal indicating that a specified limit has been reached.
NOTE:
Protective action at this level would lead to the operation of the safety shutdown equipment to immediately shut down the reactor.
(3) instrument system level. At the protective instrument system level, protective action is the generation and transmission of the command signal for the safety shutdown equipment to operate.
(4) safety system level. At the reactor safety system level, protective action is the operation of sufficient equipment to immediately shut down the reactor.
Reactivity Limits: Reactivity limits are referenced to an average pool temperature of less than 90* F with the effect of xenon poisoning on core reactivity accounted for if greater than or equal to 0.075. The reactivity worth of samarium in the core will not be included in reactivity limits. The reference core condition will be known as the cold, xenon-free critical condition.
Reactivity Worth of an Exneriment: The reactivity worth of an experiment is the value of the reactivity change that results from the experiment being inserted into or removed from its intended position.
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6 Amendment No. 23 I
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l UVAR Tech. Specs.
i 3-I Reactor Operatine (operations operated....h The reactor is operating when it is no,t shutdown, k
)
Reactor Operator: An NRC-licensed reactor operator is an individual who is certified by the NRC and the reactor administration to manipulate the controls of the UVAR reactor.
i Reactor Safety Systems: Reactor safety systems are those systems, including their associated input channels, which are designed to initiate automatic reactor 1
l protection or to provide information for initiation of manual protective action.
Reactor Secured: The reactor is secured when the following conditions exist:
a.
The reactor is shutdown,
- b. The console key is in the OFF position and is removed from the lock, and c.
No work is in progress involving core fuel, core structure, installed control rods, installed experiments or experimental facilities with a reactivity worth greater than 0.605, er control rod drives unless they are physically decoupled from the control rods.
t Reactor Shutdown: The reactor is shut down when all installed shim rods are seated or there are only six or fewer fuel elements on the grid plate.
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Reactor Staff: The Reactor Director and all personnel administratively reporting to him.
Reculatine Rod: The regulating rod is a control rod of low reactivity worth fabricated from stainless steel and used primarily to maintain an intended power level. The regulating rod need not have scram capability. The rod may be controlled by the operator with a manual switch or by the automatic seno-controller.
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Reportable Occurrence: A reportable occurrence is any of the conditions described in Section 6.6.2 of these specifications.
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Amendment No. 23
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