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12 Cards in this Set
- Front
- Back
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How do we prevent THERMAL STRATIFICATION of the PZR Surge Line? |
By limiting the Delta T between the PZR Liquid Space and the Hot Leg to less than 210 DEGREES. - (OP-3C P&L 3.1.5) |
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According to OP-4C, PRT pressure should NOT be allowed to rise above what pressure, or below what pressure?
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Should not be allowed ABOVE 75 psig. - Should not be allowed BELOW 1 psig. |
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Why do we not want a vacuum on the PRT?
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To prevent drawing Containment Atmosphere (ie Oxygen) into the PRT, which could contain Hydrogen.
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At what pressure does the PRT Rupture Disc rupture?
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100 psid. - In other words: 100 pounds above Containment Pressure. |
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What is the interlock associated with RC-527 and the PRT? - What is the reason for that interlock? |
If the PRT pressure rises to 7 psig, RC-527 goes shut. - Prevents over-pressurizing the Vent Header. |
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What are the Inputs to the PRT?
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PORV's Safeties RHR Suction Reliefs RHR Discharge Reliefs Letdown Relief (downstream of orifices) Seal Water Return Line Relief SI Test Line Relief RC Gas Vent System |
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What alarms are associated with the PRT?
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HI Press (5 psig) HI Temp (125 degrees) HI Level (76%) LO Level (71.5%) |
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PZR Level is linearly proportional to what?
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Average Coolant Temperature (between no-load Tave and 577 degrees) |
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What is the range of PZR level?
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20% to 47%
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What are the power supplies to the BLOCK VALVES?
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1(2)B-32 - 1(2)B-42
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What is required to get the LTOP Enabled Red Light lit?
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Key switch to Enable - Block Valve full open |
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At what pressure do the PORV's open? |
2335 psig.
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