Systems Exam 2 - BTRS

Question 1

If TIS-382 fails high…

Answer 1

TCV-129 diverts to the VCT and bypasses the letdown demins.

Question 2

Per SOP-106 the max allowable flow(s) through BTRS demins…

Answer 2

is 164 gpm for one, and 300 gpm for two.

Question 3

If BTRS is not isolated and the plant trips…

Answer 3

we could cause an inadvertent dilution of the RCS, as flow is still passing through the demins.

Question 4

What is the setpoint for TE-381?

Answer 4

TE-381 alarms @ 150°F

Question 5

What is the setpoint for TE-382? What occurs at this setpoint?

Answer 5

TE-382 alarms @ 155°F and diverts TCV-129 to bypass the demins.

Question 6

What is the normal lineup for BTRS when in service?

Answer 6

Used for EOL dilution and crud burst cleanup (requires IPTE to use).
→Beds 1-2 used for crud burst
→Beds 3-5 used for dilution (100 ppm to 0 ppm)

Question 7

What is the fail position for BTRS?

Answer 7

Fails in a boration lineup, i.e. valves 7056, 7057, 7045, and 7046 fail to place demins in boration lineup

Question 8

What is the purpose of the u-7054 BTRS isolation valve?

Answer 8

Must be manually closed after entry into emergency procedures. Only directly addressed in FRS-0.1A(B) RESPONSE TO NUCLEAR POWER GENERATION/ATWT