Radioactive Drains

Question 0

What systems is the RD system used to detect leakage in?

Answer 0

RCS,refueling pool, ESF equipment room and SFP

Question 1

Where does the radioactive drains system receive waste from?

Answer 1

Ctmt, aux building, radwaste bldg, fuel bldg, yard hut area, decontamination facility (unit 1 only) and the MSSS.

Question 2

What system provides sump pump bearing lubrication for the RD system?

Answer 2

DW

Question 3

What system is used to operate the RD containment isolation valves?

Answer 3

IA

Question 4

What system provides power for the inside containment ISO valves?

Answer 4

PH

Question 5

What system provides power to the outside containment ISO valves?

Answer 5

PK

Question 6

Where are all of the rd sumps pumped to?

Answer 6

LRS system

Question 7

Where is the RD system vented to?

Answer 7

HR
HA
HS

Question 8

Where is the reactor cavity sump vented to?

Answer 8

Ctmt bldg atmosphere

Question 9

Where does the west ctmt building sump receive drains from.

Answer 9

Floor and equipment drains, refueling pool, refueling pool liner plate leak detector compartment.

Question 10

Where does the east ctmt sump receive drains from?

Answer 10

Floor and equipment drains and the refueling pool.

Second penetration receives from Rx cavity sumps.

Question 11

Where are the east and west ctmt sumps vented to?

Answer 11

Ctmt atmosphere.

Question 12

Where are the ESF sumps penetrations from?

Answer 12

Sdchx
CS pump room
HPSI pump room
LPSI pump room
Pipe chase area room

Question 13

Where are the ESF sumps vented to

Answer 13

HA exhaust duct

Question 14

Where does the non ESF sump receive drains from?

Answer 14

Non ESF floor drains and equipment drains located throughout the aux bldg
Additionally a stainless steel pipe from the equipment drain tank relief valve is routed through the cover plate and into the sump.

Question 15

Where is the non ESF sump vented to?

Answer 15

HA exhaust duct

Question 16

Where are the non ESF sump pumps located?

Answer 16

40’ of aux bldg next to the sumps.

Question 17

Where does the radwaste bldg sump receive drains from?

Answer 17

Floor and equipment drains from the radwaste building and charging pump oil drain tank drains directly to the sump

Question 18

Where is the radwaste sump vented to.

Answer 18

Radwaste building HVAC exhaust duct

Question 19

Where does the fuel building sump receive drains from?

Answer 19

Floor and equipment drains throughout the fb
Cask decon pit
FP liner leak detector
Cask pit

Question 20

Where does the FB sump vent to?

Answer 20

FB atmosphere.

Question 21

Where does the holdup tank area sump receive drains from?

Answer 21

Rmwt
Holdup pump room
RWT overflows
HUT overflow

Question 22

Where is the HUT area sump vented to?

Answer 22

Atmosphere.

Question 23

Where does the decon facility located only in unit one pump to?

Answer 23

Chemical drain tanks

Question 24

What happens if a hi hi level occurs in a radwaste building sump?

Answer 24

An alarm is lit in the control room and the radwaste control room.

Question 25

What system supplies power to the radwaste sump pumps?

Answer 25

NHN

Question 26

How does a loss do radioactive drains effect the plant?

Answer 26

Sumps would eventually overflow and there would be a radioactive spill

Question 27

What happens to the RD system in the event of a LOCA?

Answer 27

Outside of contamination ISO valve will be closed from the control room to isolate flowpath from the ESF and non ESF sumps to the I radwaste building.