E31 MSIV Leakage

Question 1

E32 Can Div 1 and Div 2 be used at the same time?

Answer 1

No

Question 2

What are the time critical actions?

Answer 2

Cannot be used until 20 min after a LOCA

Can be used within 18 mins from receiving hi DW rad consistent with DBA LOCA

Question 3

Describe sequence for starting outboard MSIV.

Answer 3

Have LOCA
< 20 psig (34.7psia)
HS taken to initiate
F008 / F009 open to depressurize because >28.9 psia
@28.9 psia enter long term cleanup F006/F007 open and F008 / F009 close
If 28.9 psia is reached F006/F007 go closed and you have to re initiate.

Question 4

E32 What are the 2 modes of operation?

Answer 4

Main steam line depressurization

Long-term cooling

Question 5

E32 What is the primary side?

Answer 5

Outboard

Question 6

E32 What is the secondary side?

Answer 6

Inboard

Question 7

E32 outboard power supplies

Answer 7

16B41

Question 8

E32 inboard power supply

Answer 8

15B21

Question 9

E32 Outboard initiation permissives

Answer 9

20 psig rx pressure

20 psig MSL pressure

Question 10

E32 inboard initiation permissive

Answer 10

20 psig rx pressure
20 psig MSL pressure
>90% inboard MSIV closure

Question 11

What must be running to use MSIV leakage system?

Answer 11

Standby gas

Question 12

How is MSIV leakage system initiated?

Answer 12

Manually