Secondary sampling system

Question 1

What chemicals are added to the FW system and why?

Answer 1

Hydrazine to control O2, also contributes to pH control.
Also add MPA for pH control.

Question 2

Effect of loss of IA on system:

Answer 2

SD002s, SD005s, (Blowdown isolation and blowdown sample isolation) and PS179s (blowdown to primary sample panel) Close

Question 3

Blowdown is cooled by two stages of coolers. The rough stage sheds heat to ____ and the fine stage sheds heat to _____.

Answer 3

WS
Sampling chilled water system

Question 4

How does phase A signal affect this system?

Answer 4

SD002s and SD005s Close

Question 5

____ cools the fine and ____ cools the rough HX.

Answer 5

WO
WS

Question 6

PS179s close on ____ or _____.

Answer 6

Hi radiation signal
or
Loss of IA

Question 7

LCO 3.7.3 secondary activity spec
Modes

Answer 7

<=0.1 uci/g
Modes 1-4