SPDS

Question 1

purpose of spds

Answer 1

-monitor/display parameters to assess plant safety status
-assist implementing EOPS
-provides plant status info to U1/U2 CRs,
TSC and EOF

Question 2

What are six primary SPDS Displays?

Answer 2

ATOG: RCS press-RCS Temp limits
PSHT: Pri to Sec Heat Transfer
SGTR: SG Tube Rupture
RCSI: RCS Inventory
RHO: Reactivity Control
RB: RB Conditions

Question 3

What does the ALT button do?

Answer 3

allows operation of the display on C19

Question 4

List the 4 quality descriptors

Answer 4

black space = good
s = suspect
m = manual/substituted
b = bad

Question 5

Spds operability includes:

Answer 5

• accident assessment capability in CR, EOF, and TSC (last two can be met with person communicating with CR)
• at least one spds train in operation

Question 6

Why is spds tech spec

Answer 6

required by CFR after 3 mile island

Question 7

SPDS is inop if either is true:

Answer 7

• unable to restart at least 1 train after failure of BOTH for greater than 1 hour
• unable to transmit data to EITHER EOF or TSC for greater than 1 hour and comms capability with the CR is NOT confirmed shiftly