Term
Ves Con
Describe the Delta T limits for H/U and C/D. |
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Definition
-Reactor vessel flange and shell differential temperature shall be limited to:
-H/U: <78F.
-C/D: <132F. |
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Term
Ves Con
Describe any precaustions for raising recirculation flow. |
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Definition
| -Flow shall not be raised unless top and bottom head delta T is < 145F. |
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Term
Ves Con
Describe the maximum H/U and C/D limit. |
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Definition
| -Shall not exceed 100F/hr. |
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Term
Ves Con
Describe the operating and design temperature limit. |
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Definition
-Design: 562F.
-Operating: 525F. |
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Term
Ves Con
Describe the operating and design pressure limit. |
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Definition
-Design: 1250 psig.
-Operating: 1025 psig. |
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Term
Ves Con
Describe the amount of core flow. |
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Definition
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Term
Ves Con
Describe the amount of steam flow. |
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Definition
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Term
Ves Con
Describe the amount of feed flow. |
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Definition
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Term
Ves Con
Describe the setpoints for vessel head seal flange leak rate detection. |
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Definition
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Term
Ves Con
Describe the function of the CRD housing support. |
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Definition
-CRDs are not ejected due to stub tube failure. .
-Limits travel to 3". |
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Term
Ves Con
Describe the function of the control rod tube guide. |
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Definition
-Houses CR when withdrawn.
-Four holes for water flow thru fuel. |
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Term
Ves Con
Describe the function of the velocity limiter. |
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Definition
-Prevents freefall less than 5' (3'11") / second.
-Limits reactivity addition of <280 cal/gram. |
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Term
Ves Con
Describe the jet pump / recirc flow percentages. |
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Definition
-42% from recirc pumps (driving).
-58% from jet pumps (driven). |
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Term
Ves Con
Describe the jet pumps. |
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Definition
-20 total.
-10 per loop0.
Eensures 2/3 coverage of core (-174"). |
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Term
Ves Con
Describe the indicated safeguard water level. |
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Definition
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Term
Ves Con
Describe the indicated core flood water level. |
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Definition
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Term
Ves Con
Describe the indicated feedwater water level. |
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Definition
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Term
Ves Con
Describe the indicated vessel flood water level. |
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Definition
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Term
Ves Con
Describe the limits on starting a recirc pump. |
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Definition
-Don't start if:
-50F difference across recirc pumps
(or)
-145F Rx difference. |
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Term
Ves Con
Describe the Rx low water level alarm setpoint. |
|
Definition
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Term
Ves Con
Describe the Low/Low water level setpoint and what happens. |
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Definition
-Set at -47".
-Trips recirc pumps.
-Initiates groups 1 and 2
-Starts RCIC, HPCI, RHR, CS, EDG's and APRS low level logic. |
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Term
Ves Con
Describe the High water level setpoint and what happens. |
|
Definition
-Set at +48".
-Trips RCIC.
-Trips HPCI.
-Trips FW.
-Trips the turbine. |
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Term
Ves Con
Descripe what happens at -156". |
|
Definition
| Containment spray permissive reset. |
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Term
Ves Con
Describe the LPCI loop select permissive setpoint. |
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Definition
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Term
Ves Con
Describe what happens at <600psig Rx pressure. |
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Definition
| -Bypasses MSIV closure and low condenser vacuum inputs to RPS when mode switch in startup, shutdown or refuel. |
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Term
Ves Con
Describe what happens when <420 psig Rx pressure. |
|
Definition
-LPCI valve permissive.
-ECCS pump start permissive. |
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Term
Ves Con
Describe the High pressure SCRAM setpoint. |
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Definition
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Term
Ves Con
Describe the indications for a failure of the shroud support access cover. |
|
Definition
-Sudden drop in Core Plate d/p.
-Sudden drop in reactor power.
-Rise in indicated core flow.
-Drop in all jet pump d/ps. |
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Term
Ves Con
Descripe the indications of a shroud support access cover coming completely off. |
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Definition
| -Core plate d/p, reactor power, indicated core flow, and jet pump d/p will be 15% above normal. |
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Term
Ves Con
Describe the temperatures taken during H/U and C/D. |
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Definition
-Taken every 15 minutes until 3 consecutive within 5F in each location.
-Rx vessel shell adjacent to shell flange.
-RX vessel bottom drain.
-Recirc loops A and B.
-RX vessel bottom head. |
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Term
Ves Con
Describe the function of the biological shield. |
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Definition
-Provide shielding to protect equipment from radiation and thermal effects.
-Provides main protection for areas surrounding Rx.
-ALARA. |
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Term
Ves Con
Describe the height of the steam seperator skirt. |
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Definition
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Term
Ves Con
Describe the jet pumps with multiple taps. |
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Definition
-A loop 11 and 16.
-B loop 1 and 6. |
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Term
Ves Con
Describe core orificing. |
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Definition
-More power occurs in center of core so more two-phase flow in center.
-Larger openings in center of core. |
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Term
Ves Con
Describe a rod when at pos 48. |
|
Definition
-Valve off seat area to allow cooling water flow path.
-If it uncouples it will go to position 49 and may get alarm. |
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Term
Ves Con
Describe the fuel bundle and control rod locations. |
|
Definition
-Fuel: odd-even.
-Control rod: even-odd. |
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Term
Ves Con
Describe a control rod withdrawl sequence. |
|
Definition
| -Limit worth so that core will not be more than 1.3% reactivity supercritical during rod drop accident. |
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