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RCS
review
13
Engineering
Professional
04/19/2014
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Term
Limit for UNIDENTIFIED Leakage
 Definition
1 gpm
Term
Limit for IDENTIFIED leakage
 Definition
10 gpm (including SGs)
Term
Limit for CONTROLLED leakage
 Definition
40 gpm (seal water flow)
Term
Limit for Primary to secondary leakage
 Definition
500 gpd through 1 SG
Term
Where does reactor vessel head leakoff drain to?
 Definition
CDTT
Term
Requirements to open a Tcold loop stop valve
 Definition
  • Associated Thot loop stop closed
  • Auctioneered High Thot within 20F of low Thot
  • Auctioneered High Tcold within 20F of low Tcold
  • Both High Tcold and High Thot <170F
  • 200 psid max pressure allowed
Term
Open permissive of a Hot leg stop
 Definition

Associated cold leg stop closed

 

and

 

max 200 psid
Term
What inputs into each loop Tave circuit?
 Definition
  • The average of 3 narrow range Thot indicators
  • 1 narrow range Tcold indicator
Term
What chemical is used to increase pH in the RCS?
 Definition
LiOH
Term
Loop 1 cold leg penetrations
 Definition
  1. SI/RHR/Accum
  2. CHG and SI
  3. Normal Charging
  4. Pzr spray
Term
Loop 2 cold leg penetrations
 Definition
  1. Pzr spray
  2. SI/RHR/Accum
  3. Charging and SI
Term
Loop 3 cold leg penetrations
 Definition
Letdown
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