Systems 3 Tech Specs

Question 1

Tech Spec 3.7.9 SSI Requirements

Answer 1

→maintain max expected inlet temp ≤102°F
→level maintained ≥770’, restore within 7 days or shutdown (required level based on 30 days for accident unit and safe shutdown of other unit)
→if SSI inoperable for reasons other than level (e.g. temp >102° or dam degraded), be in mode 3 in 6 hrs, mode 5 in 36 hrs

Modes 1-4

Question 2

TR 13.7.33 SSI Sediment

Answer 2

→average sediment depth shall be ≤1.5 ft; if not, take immediate action to reduce sediment level
→dam shall have no abnormal degradation or erosion; if not, immediately enter TS 3.7.9 for SSI inop

Question 3

Tech Spec 3.7.8 Station Service Water System (SSWS)

Answer 3

Two trains and an SSW Pump on the opposite unit with its associated cross-connects shall be operable (Modes 1-4).

Question 4

TR 13.7.34 Flood Protection

Answer 4

→flood protection shall be provided for all safety-related systems, components, and structures when SCR exceeds 777.5 ft
→applicable at all times
→initiate action to be in lower mode in 1 hr, mode 3 in 7 hrs (only applies if flood protection not in place)

Question 5

Tech Spec 3.7.7 CCW Operability

Answer 5

Both trains of CCW must be operable in Modes 1-4
→one train inoperable: restore within 72 hrs (or RICT)
→can’t restore: mode 3 in 6 hrs, mode 5 in 36 hrs

Note: if any RHR train is made inoperable by CCW inoperability, must enter LCO 3.4.6

Question 6

RWST Tech Spec Requirements

Answer 6

Modes 1-4
→Temp: 40°F to 120°F, fix within 8 hrs
→Boron: 2400-2600 ppm, fix within 8 hrs
→Level: 473,731 ( >95% per TS Bases), fix within 1 hour

Note: If low temp alarm comes in (≈45°), recirc through containment spray pumps to warm it up.

Question 7

Tech Spec 3.5.2 ECCS - Operating

Answer 7

Two trains shall be operable in MODES 1‐3
→exception allowed to isolate both SI flowpaths for 2 hours for valve testing in MODE 3

When coming up to NOP/NOT from shutdown:
→both SI pumps required to be inoperable below 350°F for LTOP
→therefore, SI pumps must be inoperable while changing from Mode 4 to Mode 3
→allowed for 4 hours OR before RCS temp >375°F, whichever comes first
→one train of CCP inop - 7 days to restore
→one or more train inoperable other than CCP but you can still guarantee 100% ECCS flow - 72 hours

Question 8

Tech Spec 3.5.3 ECCS - Shutdown

Answer 8

One ECCS train shall be operable in MODE 4
→an RHR train in SDC can be considered operable for this spec
→assumes train can be realigned to the injection flowpath
→concerned with RHR suction temperature and voiding when realigned to the RWST
→cannot consider RHR in shutdown cooling for this spec when temperature is >200F
→SIPs are not required in this spec due to requirements of LTOP
→one train RHR inop - immediately take action to restore to operable
→one CCP OOS - restore within 1 hour

Question 9

Tech Spec 3.5.5 Seal Injection Flow

Answer 9

Seal injection flow shall be <40gpm when RCS pressure is between 2215 psig and 2255 psig
→applicable in Modes 1‐3
→restore in 4 hours or shutdown
→concerned with adequate ECCS flow on an SI

Question 10

TR 13.1.31 Boration Injection Systems - Operating

Answer 10

Two flowpaths required operable in Modes 1‐4
→required to be manually aligned in 15 minutes
→administratively controlled if field actions required for alignment

Question 11

TS 3.6.7 Chem Add Tank requirements

Answer 11

→NaOH concentration must be between 28% - 30% by weight
→Level must be maintained 91% - 94%.
→1-4 psig N2 overpressure

Question 12

TS 3.6.6 CS System MODE requirements

Answer 12

2 trains required in modes 1 - 4

Question 13

TS 3.5.4 RWST

Answer 13

→Boron 2400-2600 ppm (restore in 8 hrs)
→Level > 95% or 473,731 gallons (restore in 1 hr)
→Temp 40 -120˚F (restore in 8 hrs; if too cold, heat by recirc through CSPs)

Question 14

TS 3.9.5 RHR High Water Level (Mode 6)

Answer 14

One RHR loop shall be OPERABLE and in operation in MODE 6 with the water level ≥ 23 feet above the top of the reactor vessel.

Question 15

TS 3.9.6 RHR Low Water Level (Mode 6)

Answer 15

Two RHR loops shall be OPERABLE and one RHR loop shall be in operation in MODE 6 with the water level < 23 feet above the top of the reactor vessel flange

Question 16

Tech Specs

3.4.6 RCS Loops - Mode 4
3.4.7 RCS Loops - Mode 5, Loops Filled
3.4.8 RCS Loops - Mode 5, Loops Not Filled

Question 17

Tech Spec 3.4.12 requirements for LTOP

Answer 17

→2 RHR suction reliefs (lift @ 450 psig ± 3%), or
→2 PORVs, or
→1 of each
→0 SI pumps capable of injecting
→2 charging pumps capable of injecting
→0 accumulators capable of injecting

If these requirements are not met, then the RCS must be depressurized and a 2.98 sq in vent path must be made in the RCS pressure boundary.

Question 18

Per Tech Spec 3.4.12, LTOP applies Mode 4, 5, and 6 (when RV head on), but does not apply when all RCS CL temperatures > 320°F and all of the following are met:

Answer 18

1. at least 1 RCP operating
2. PZR level ≤ 92%
3. Plant heatup rate is limited to 60°F per hour

Note: LTOP will still arm ≤350°F

Question 19

Tech Spec 3.5.2 ECCS - Operating

Answer 19

Two ECCS trains shall be operable (Modes 1-3)
→ECCS trains are CCPs, SIPs, RHRPs and piping
→SI Accumulators and RWST not considered part of the LCO
→all ECCS subsystems credited for LOCA

Note: operation in Mode 3 with ECCS pumps made incapable of injecting per LTOP (LCO 3.4.12) is allowed for up to 4 hrs or until temp of all 4 cold legs >375° F, whichever comes first.

Question 20

Tech Spec 3.5.3 ECCS - Shutdown

Answer 20

One ECCS train shall be operable (Mode 4)
→an operable train is CCP and RHR (doesn’t include SIP) capable of taking suction from RWST and swapping to sump
→an RHR train is operable when aligned for shutdown cooling if capable of being manually realigned to ECCS
→if RHR subsystem inoperable, take action to restore immediately
→if CCP subsystem inoperable, restore within 1 hr

Question 21

TS LCO 3.7.20, UPS HVAC System

Answer 21

Two UPS HVAC System Trains shall be OPERABLE (Modes 1-4)
1 hour or less, actions

LCO 3.7.20.A one UPS HVAC System train inoperable

→A.1: Verify the affected UPS & Distribution Room is supported by an OPERABLE UPS A/C Train immediately AND
→A.2: Restore the inoperable UPS HVAC train to OPERABLE status within 30 days

Question 22

TR 13.7.36 “Area Temperature Monitoring”

Answer 22

One or more areas exceeds the normal temperature for more than 8 hours then restore according to CAP and complete analysis immediately.

Question 23

13.7.37 - Safety Chilled Water System

Answer 23

Electrical Switchgear Area Emergency Fan Coil Units shall be OPERABLE in MODES 1-4. If one or more is inoperable, the LCO allows you to either:

1. Declare Safety Chilled Water train(s) inoperable and enter TS LCO 3.7.19 (Immediately), or
2. Declare affected fan coil unit(s) and their support equipment inoperable (Immediately)

Question 24

Tech Spec 3.7.19

Answer 24

Two safety chilled water trains shall be operable in Modes 1-4

→one train inoperable, restore within 72 hrs or RICT; if not, Mode 3 in 6 hrs, Mode 5 in 36 hrs

→two trains inoperable, LCO 3.0.3 immediately

Question 25

Tech Spec 3.1.4 Rod Group Alignment Limits

Answer 25

Modes 1 and 2 All shutdown and control rods shall be OPERABLE AND Individual indicated rod positions shall be within 12 steps of their group step counter demand position. Note: the operability (i.e. trippability) of the shutdown and control rods is an initial assumption in all safety analyses that assume rod insertion upon reactor trip. One or More Rods Inoperable: →verify SDM within COLR limits within 1 hr OR →initiate boration to restore SDM within 1 hr AND →Mode 3 in 6 hrs One Rod Not Within Alignment Limits: →verify SDM within COLR limits within 1 hr OR →initiate boration to restore SDM within 1 hr AND →reduce thermal power to ≤75% RTP within 2 hrs More Than One Rod Not Within Alignment Limits: →verify SDM within COLR limits within 1 hr OR →initiate boration to restore SDM within 1 hr AND →Mode 3 in 6 hrs

Question 26

Tech Spec 3.1.5 Shutdown Bank Insertion Limits

Answer 26

Each shutdown bank shall be within insertion limits specified in the COLR (Modes 1 and 2 with any control bank not fully inserted) . Each shutdown bank shall be within 218 and 231 steps withdrawn in MODE 1, and in MODE 2 with any control bank not fully withdrawn. This LCO is not applicable during the performance of OPT-106A/B (SR 3.1.4.2) One or More Shutdown Banks Not Within Limits: →verify SDM within COLR limits within 1 hr OR →initiate boration to restore SDM within 1 hr AND →restore shutdown banks to within limits within 2 hrs

Question 27

Tech Spec 3.1.6 Control Bank Insertion Limits

Answer 27

Control banks shall be within the insertion, sequence, and overlap limits specified in the COLR (Modes 1 and 2 with keff ≥1.0). This LCO is not applicable while performing SR 3.1.4.2

Question 28

TR 13.1.37 Rod Group Alignment Limits and Rod Position Indicator

Answer 28

The Rod Position Deviation Monitor (u-ALB-6D/3.5, DRPI ROD DEV alarm and inputs) shall be operable in Modes 1 and 2. If the DRPI ROD DEV alarm becomes inoperable, rod group alignment, and the operability of the Demand Position Indication System and the DRPI System must be verified every 4 hours. Applicable conditions of LCOs 3.1.4, Rod Group Alignment Limits, and 3.1.7, Rod Position Indication, shall be immediately entered upon discovery of one or more rod position indications inoperable.

Question 29

TR 13.1.38 Control Bank Insertion Limits

Answer 29

The Control Bank Insertion Limit Monitor shall be operable in Mode 1 and in Mode 2 with the reactor critical. The Control Bank Insertion Limit Monitor inputs annunciators u-ALB-6D/1.7, ANY CONTROL BANK AT LO LMT, and u-ALB-6D/2.7, ANY CONTROL BANK AT LO-LO LMT, and CONTROL ROD INSERTION LIMIT & POSITION recorders u-ZR-0412 & 0412A. If these indications become inoperable, the position of each control bank must be verified to be within the limits of the COLR every 4 hours. Applicable conditions of LCO 3.1.6, Control Bank Insertion Limits shall be immediately entered upon discovery of control bank insertion limits not met.

Question 30

ODCM Section 3.3.3.5 - Radioactive Gaseous Effluent Control

Answer 30

→specifies requirements for Radioactive Gaseous Effluent Monitoring I & C →WRGM flow rate and sample points →if WRGM is OOS, flow rate is estimated every 4 hrs OR sample every 24 hrs, depending on which aspect of WRGM is OOS

Question 31

Tech Spec 5.5.4 Administrative Requirement for Control of Radioactive Effluents

Answer 31

→ALARA to the public →monitor releases

Question 32

Tech Spec 3.3.2 ESF Instrumentation

Answer 32

→containment pressure instruments operable →Modes 1-3 →trip or bypass in 72 hrs or Mode 3 in 78 hrs, Mode 4 in 84 hrs

Question 33

Tech Spec 3.3.3 PAM Instrumentation

Answer 33

→Modes 1-3 →PAM instruments must be operable

Question 34

Tech Spec 3.3.1 & 3.9.3 Source Range:

Answer 34

→Source Range Instrumentation is required in Mode 2 (below P6) through Mode 6 →in Mode 6, only visual count rate indication is required in the Control Room →in Mode 3-5 the T.S. only applies if the Rod Control System is capable of withdrawal and one or more rods not fully inserted.

Question 35

Tech Spec 3.3.1 Intermediate Range:

Answer 35

The Intermediate Range Instrumentation is required in Mode 1 (below P-10) and Mode 2 (above P-6) 1 IR Channel inoperable, Mode 1 (P-6): →reduce THERMAL POWER to P-10 in 24 hours →Mode 2 (P-6): →suspend operations involving positive reactivity additions immediately, and →reduce power to

Question 36

Tech Spec 3.3.1 Power Range:

Answer 36

2 PR Channels Inoperable, enter LCO 3.0.3

Question 37

Tech Spec 3.2.4 Quadrant Power Tilt Ratio (QPTR)

Answer 37

→action required once ≥1.02 →applicable in Mode 1, >50% →For each 1% QPTR above 1.00, reduce power 3% →verify QPTR every 12 hrs →perform evaluation to allow continued operation →if completion time not met, reduce power to <50% Note: this one is tricky. Action isn't required until 1.02, but you must take the action based on the amount above 1.00

Question 38

Tech Spec 3.2.3 Axial Flux Difference

Answer 38

→applicable in Mode 1 >50% →Spec not met when **two or more** PR NIs indicate out of spec →30 minutes to be <50% - no time for correction Background Info: →AFD = ΔI →inside the doghouse = acceptable; outside the doghouse = unacceptable "Half power, half an hour"