Term
RPIS
Describe the indications for different positions on RPIS. |
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Definition
-Position --: Green.
-Position 00: Green.
-Positions 01-47: Amber.
-Position 48: Red.
-Position "49": Blank. |
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Term
RPIS
Describe the power supply to rod select push buttons. |
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Definition
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Term
RPIS
Describe the tests done on/by RPIS. |
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Definition
-RPIS scans rod position every 2.4 milliseconds.
-RWM (Y-70) scans rod position every 100 milliseconds or 2.4 milliseconds for SCRAM. |
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Term
RPIS
Describe the power supply to RPIS. |
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Definition
-Through Y-10 from 250V battery (normal).
-From #11 EDG from 15 bus MCC 134 (emergency). |
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Term
RPIS
Describe the effect on a loss of power to RPIS (Y-10). |
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Definition
-Rod select blank.
-Loss of all rod position information to RWM, process computer, full core display, and 4 rod display. |
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Term
RPIS
Describe the RPIS reed switches. |
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Definition
-53 glass enclosed switches at 3" intervals in dry tube.
-Operated by magnet on index tube.
-Even numbers are latched positions. |
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Term
RPIS
Describe when a rod drift alarm comes in. |
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Definition
| Closing of an odd switch while not driving or opening of an even switch while not driving. |
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Term
RPIS
Describe when a ROD OVERTRAVEL alarm actuates. |
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Definition
| Control rod position 49 an any of the 121 rods. |
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Term
RPIS
Describe when RPIS INOPERATIVE annunciator actuates. |
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Definition
-Master clock switching time greater than 44 microseconds or less than 22 microseconds.
-Any probe buffer card is absent from its slot. |
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Term
RPIS
Describe the probe buffer cards. |
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Definition
| -4 buffer cards of 100, 200, 300, and 400 pages (rods divided up amongst them). |
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Term
RPIS
Describe the power supply to the full core display. |
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Definition
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Term
RPIS
Describe the Alarms for RPIS. |
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Definition
-RPIS INOPERATIVE
-Clock malfunction.
-Lose 4 rod display.
-No affect on full core display.
-Probe buffer card removed.
-Loss of Power (Y-10).
-Will receive rod block. |
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Term
RPIS
Describe the indications on a rod block. |
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Definition
-White rod permit light goes out.
-Full core display light goes out.
-Rod select matrix light stays on.
-Disconnects HCU from drive busses.
-RWM rod block - enforced at all power levels.
-RWM rod block alarm.
-Do no get rod block alarm. |
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