Term
RBCCW
Describe the power supplies to the RBCCW pumps. |
|
Definition
-11 pump: MCC-133.
-12 pump: MCC-142A. |
|
|
Term
RBCCW
Describe the RBCCW loads. |
|
Definition
-RWCU NRHX.
-Recirc pump motor and seal water coolers.
-RB & TB process system sample coolers and chillers.
-Fuel pool cooling water HXs.
-RHR pump seal coolers.
-DW coolers.
-DW equipment drain sump HX.
-CRD pump thrust bearing and gear box oil coolers.
-PAS system. |
|
|
Term
RBCCW
Describe the flow to recirc pumps and alarms, trips. |
|
Definition
-Normal flow 66.5 gpm.
-Low flow alarm at 58 gpm.
-Loss of RBCCW must trip recirc pumps after 60 secs. |
|
|
Term
RBCCW
Describe the surge tank alarms. |
|
Definition
-High alarm: 6'4".
-Low alarm: 2'6". |
|
|
Term
RBCCW
Describe the system pressure alarms/standby features. |
|
Definition
-Low pressure is 30psig.
-Standby pumps starts at 30psig if in auto. |
|
|
Term
RBCCW
Describe the load shed of RBCCW. |
|
Definition
| Shed on LOOP with ECCS signal. |
|
|
Term
RBCCW
Describe rad monitoring of the RBCCW system. |
|
Definition
-RM downstream of pumps.
-Alarms at 1500cps. |
|
|
Term
RBCCW
Describe primary containment with RBCCW. |
|
Definition
-Supply MO valve and check valve.
-2 discharge MO valves.
-All on outside of drywell. |
|
|
Term
RBCCW
Describe what cools the RBCCW HXs. |
|
Definition
|
|
Term
RBCCW
Describe the HX operation requirements. |
|
Definition
-During summer ops: all 3 HXs w/SW to all 3.
-During winter ops: 2 HX w/SW to 1.
-Max dP of SW to heat exhchanger is 20psid. |
|
|
Term
RBCCW
Describe corrosion protection for RBCCW. |
|
Definition
| Potassium chromate is added. |
|
|
Term
RBCCW
Describe power supplies to RBCCW MO valves. |
|
Definition
-2 drywell cooler MO isolation valves powered by MCC-143, and 2 others by MCC-133.
-Inlet to drywell and second outlet from drywell MO valves powered by MCC-134.
-First outlet valve from drywell powered by MCC-143.
-NRHX outlet valve is MCC-122 (non "E"). |
|
|
