Text

Technical Specifications, Mode Change Limitations Using the Consolidated Line Item Improvement Process
	ML050750384
Person / Time
Site:	Watts Bar
Issue date:	03/03/2005
From:	Pickett D; NRC/NRR/DLPM/LPD2
To:	Singer K; Tennessee Valley Authority
	Pickett D, NRR/DLPM, 415-1364
Shared Package
ML050320376	List: ML050320368; ML050750384;
References
	TAC MC4470 TVA-WBN-TS-04-09
	Download: ML050750384 (23)
	v • d • e

PAM Instrumentation 3.3.3 3.3 INSTRUMENTATION 3.3.3 Post Accident Monitoring (PAM) Instrumentation LCO 3.3.3 The PAM instrumentation for each Function in Table 3.3.3-1 shall be OPERABLE.

APPLICABILITY: According to Table 3.3.3-1.

ACTIONS I.------------

Separate Condition entry is allowed for each Function.

CONDITION REQUIRED ACTION COMPLETION TIME A. ------------ NOTE------------ A.1 Restore required channel to 30 days Not applicable to OPERABLE status.

Functions 3, 4, 15, and 17.

One or more Functions with one required channel Inoperable.

B. Required Action and B.1 Initiate action in accordance Immediately associated Completion with Specification 5.9.8.

Time of Condition A not met.

(continued)

Watts Bar-Unit 1 3.3-41 Amendment No. 55

LCO Applicability 3.0 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY LC0 3.0.1 LCOs shall be met during the MODES or other specified conditions in the Applicability, except as provided in LCO 3.0.2.

LCO 3.0.2 Upon discovery of a failure to meet an LCO, the Required Actions of the associated Conditions shall be met, except as provided in LCO 3.0.5 and LCO 3.0.6.

If the LCO is met or Is no longer applicable prior to expiration of the specified Completion Time(s), completion of the Required Action(s) Is not required unless otherwise stated.

LCO 3.0.3 When an LCO Is not met and the associated ACTIONS are not met, an associated ACTION Is not provided, or if directed by the associated ACTIONS the unit shall be placed In a MODE or other specified condition in which the LCO is not applicable. Action shall be Initiated within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months to place the unit, as applicable, in:

a. MODE 3 within 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months ;

b. MODE 4 within 13 hours1.50463e-4 days 0.00361 hours 2.149471e-5 weeks 4.9465e-6 months ; and

c. MODE 5 within 37 hours4.282407e-4 days 0.0103 hours 6.117725e-5 weeks 1.40785e-5 months .

Exceptions to this Specification are stated in the individual Specifications.

Where corrective measures are completed that permit operation in accordance with the LCO or ACTIONS, completion of the actions required by LCO 3.0.3 Is not required.

LCO 3.0.3 Is only applicable In MODES 1, 2, 3, and 4.

LCO 3.0.4 When an LCO Is not met, entry Into a MODE or other specified condition In the Applicability shall only be made:

a. When the associated ACTIONS to be entered permit continued operation In the MODE or other specified condition In the Applicability for an unlimited period of time; (continued)

Amendment No. 55 3.0-1 Wafts Bar-Unit 11 Watts Bar-Unit 3.0-1 Amendment No. 55

LCO Applicability 3.0 3.0 LCO APPLICABILITY LCO 3.0.4 (continued) b. After performance of a risk assessment addressing inoperable systems and components, consideration of the results, determination of the acceptability of entering the MODE or other specified condition in the Applicability, and establishment of risk management actions, If appropriate; exceptions to this Specification are stated in the individual Specifications, or

c. When an allowance is stated in the individual value, parameter, or other Specification.

This Specification shall not prevent changes In MODES or other specified conditions in the Applicability that are required to comply with ACTIONS or that are part of a shutdown of the unit.

LCO 3.0.5 Equipment removed from service or declared Inoperable to comply with ACTIONS may be returned to service under administrative control solely to perform testing required to demonstrate its OPERABILITY or the OPERABILITY of other equipment. This Is an exception to LCO 3.0.2 for the system returned to service under administrative control to perform the testing required to demonstrate OPERABILITY.

LCO 3.0.6 When a supported system LCO Is not met solely due to a support system LCO not being met, the Conditions and Required Actions associated with this supported system are not required to be entered. Only the support system LCO ACTIONS are required to be entered. This is an exception to LCO 3.0.2 for the supported system. In this event, additional evaluations and limitations may be required in accordance with Specification 5.7.2.18, Safety Function Determination Program (SFDP).' If a loss of safety function Is determined to exist by this program, the appropriate Conditions and Required Actions of the LCO In which the loss of safety function exists are required to be entered.

(continued)

Amendment No.55 3.0-2 Bar-Unit 1 Watts Bar-Unit 1 3.0-2 'Amendment No. 55

SR Applicability 3.0 3.0 SR APPLICABILITY SR 3.0.3 When the Surveillance is performed within the delay period and the Surveillance (continued) Is not met, the LCO must Immediately be declared not met, and the applicable Condition(s) must be entered.

SR 3.0.4 Entry into a MODE or other specified condition in the Applicability of an LCO shall only be made when the LCO's Surveillances have been met within their specified Frequency, except as provided by SR 3.0.3. When an LCO is not met due to Surveillances not having been met, entry into a MODE or other specified condition in the Applicability shall only be made in accordance with LCO 3.0.4.

This provision shall not prevent entry Into MODES or other specified conditions in the Applicability that are required to comply with ACTIONS or that are part of a shutdown of the unit.

Watts Bar-Unit I 3.0-5 Amendment No. 55

SDM - Tavg > 200'F 3.1.1 3.1 REACTIVITY CONTROL SYSTEMS 3.1.1 SHUTDOWN MARGIN (SDM) - Tacg > 200'F LCO 3.1.1 SDM shall be > 1.6% Ak/k.

APPLICABILITY: MODE 2 with ken < 1.0, MODES 3 and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. SDM not within limit. A.1 Initiate boration to restore SDM 15 minutes to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.1.1 Verify SDM is > 1.6% Ak/k. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Watts Bar Unit 1 3.1-1 Amendment No.55

SDM-T... < 2000 F 3.1.2 3.1 REACTIVITY CONTROL SYSTEMS 3.1.2 SHUTDOWN MARGIN (SDM)-Tavg S 2000 F LCO 3.1.2 The SDM shall be 2 1.0% Ak/k.

APPLICABILITY: MODE 5.

ACTIONS _

CONDITION REQUIRED ACTION COMPLETION TIME A. SDM not within limit. A.1 Initiate boration to restore SDM 15 minutes to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.2.1 Verify SDM is 2 1.0% Ak/k. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Watts Bar-Unit 1 3.1-2 Amendment No. 55

Remote Shutdown System 3.3.4 3.3 INSTRUMENTATION 3.3.4 Remote Shutdown System LCO 3.3.4 The Remote Shutdown System Functions in Table 3.3.4-1 shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

NOTE-------------------------------- ----- ----

Separate Condition entry is allowed for each Function.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more required A.1 Restore required Function to 30 days Functions Inoperable. OPERABLE status.

B. Required Action and B.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time not met. AND B.2 Be InMODE 4. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Watts Bar-Unit 1 3.3-46 Amendment No. 55

RCS Loops - MODE 5, Loops Not Filled 3.4.8 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.8 RCS Loops - MODE 5, Loops Not Filled LCO 3.4.8 Two residual heat removal (RHR) loops shall be OPERABLE and one RHR loop shall be In operation.

-.. -------------------------------NOTES----------------------------------------------

1. All RHR pumps may be de-energized for

15 minutes when switching from one loop to another provided:

a. The core outlet temperature is maintained > 10F below saturation temperature.

b. No operations are permitted that would cause a reduction of the RCS boron concentration; and

c. No draining operations to further reduce the RCS water volume are permitted.

2. One RHR loop may be inoperable for

2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing provided that the other RHR loop is OPERABLE and in operation.

APPLICABILITY: MODE 5 with RCS loops not filled.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One RHR loop inoperable. A.1 Initiate action to restore RHR Immediately loop to OPERABLE status.

(continued)

Watts Bar-Unit I 3.4-1 6 Amendment No. 55

Pressurizer PORVs 3.4.11 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.11 Pressurizer Power Operated Relief Valves (PORVs)

LCO 3.4.11 Each PORV and associated block valve shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

NOTE-----------------------------

Separate Condition entry Is allowed for each PORV.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more PORVs A.1 Close and maintain power to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable and capable of associated block valve.

being manually cycled.

B. One PORV inoperable B.1 Close associated block valve. 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and not capable of being manually cycled. AND B.2 Remove power from associated 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months block valve.

AND B.3 Restore PORV to OPERABLE 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months status.

(continued)

Watts Bar-Unit 1 3.4-22 Amendment No.55

COMS 3.4.12 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.12 Cold Overpressure Mitigation System (COMS)

LCO 3.4.12 A COMS System shall be OPERABLE with a maximum of one charging pump and no safety injection pump capable of injecting into the RCS and the accumulators isolated and either a or b below.

a. Two RCS relief valves, as follows:

1. Two power operated relief valves (PORVs) with lift settings within the limits specified In the PTLR, or

2. One PORV with a lift setting within the limits specified in the PTLR and the RHR suction relief valve with a setpoint 2 436.5 psig and < 463.5 psig.

b. The RCS depressurized and an RCS vent capable of relieving > 475 gpm water flow.

=, -- ---------------------------------------------------------.

1. Two charging pumps may be made capable of injecting for less than or equal to one hour for pump swap operations.

2. Accumulator may be unisolated when accumulator pressure is less than the maximum RCS Pressure for the existing RCS cold leg temperature allowed by the P/T limit curves provided in the PTLR.

APPLICABILITY: MODES 4 and 5, MODE 6 when the reactor vessel head is on.

Watts Bar-Unit 1 3.4-25 Amendment No. 55

COMS 3.4.12 ACTIONS

. - - - -- .---- - - -- - - - I---------------------------------NOTE--------------------- - .-- ........................---

LCO 3.0.4.b is not applicable when entering MODE 4.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more safety A.1 Initiate action to verify no Immediately Injection pumps capable of safety Injection pumps are injecting Into the RCS. capable of Injecting into the RCS.

B. Two or more charging B.1 Initiate action to verify a Immediately pumps capable of injecting maximum of one charging into the RCS. pump is capable of injecting into the RCS.

C. An accumulator not C.1 Isolate affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months isolated when the accumulator.

accumulator pressure is greater than or equal to the maximum RCS pressure for existing cold leg temperature allowed in the PTLR.

(continued)

Watts Bar-Unit 1 3.4-26 Amendment No. 55

RCS Leakage Detection Instrumentation 3.4.15 3.4 REACTOR COOLANT SYSTEM (hCS) 3.4.15 RCS Leakage Detection Instrumentation LCO 3.4.15 The following RCS leakage detection instrumentation shall be OPERABLE:

a. One containment pocket sump level monitor; and

b. One lower containment atmosphere radioactivity monitor (gaseous and particulate).

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS CONDITION l REQUIRED ACTION COMPLETION TIME A. Required containment A.1 Perform SR 3.4.13.1. Once per I' pocket sump level monitor 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months inoperable. AND A.2 Restore required containment 30 days pocket sump level monitor to OPERABLE status.

(continued)

Watts Bar-Unit 1 3.4-36 Amendment No. 55

RCS Leakage Detection Instrumentation 3.4.15 ACTIONS (continued) .

CONDITION REQUIRED ACTION COMPLETION TIME B. Required containment B.1.1 Analyze grab samples of Once per I atmosphere radioactivity the containment 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months monitor inoperable. atmosphere.

OR Once per B.1.2 Perform SR 3.4.13.1. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months AND 30 days B.2 Restore required containment atmosphere radioactivity monitor to OPERABLE status.

C. Required Action and C.1 Be In MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time not met. AND C.2 Be In MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months D. All required monitors D.1 Enter LCO 3.0.3. Immediately inoperable.

Watts Bar-Unit I 3.4-37 Amendment No. 55

RCS Specific Activity 3.4.16 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.16 RCS Specific Activity LCO 3.4.16 The specific activity of the reactor coolant shall be within limits.

APPLICABILITY: MODES 1 and 2, MODE 3 with RCS average temperature (Tavg) 2 5000 F.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. DOSE EQUIVALENT 1-131 --------------------NOTE--------------------

> 0.265 pC/gm. LCO 3.0.4.c is applicable.

A.1 Verify DOSE EQUIVALENT l-131 Once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months s 21 piCVgm AND A.2 Restore DOSE EQUIVALENT 1-131 to within limit. 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months B. Gross specific activity of the B.1 Perform SR 3.4.16.2. 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months reactor coolant not within limit.

AND B.2 Be In MODE 3 with Tag < 5000 F. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (continued)

Watts Bar-Unit 1 3.4-39 Amendment No. 55

ECCS - Operating 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.2 ECCS - Operating LCO 3.5.2 Two ECCS trains shall be OPERABLE.

K IATUD

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -I.. . Al- - ------------ ------------------------------

1. In MODE 3, both safety injection (SI) pump flow paths may be isolated by closing the Isolation valves for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months to perform pressure isolation valve testing per SR 3.4.14.1.

2. In MODE 3, the safety injection pumps and charging pumps may be made incapable of injecting to support transition into or from the Applicability of the LCO 3.4.12, Cold Overpressure Mitigation System (COMS) for up to four hours or until the temperature of all the RCS cold legs exceeds 375 0F, whichever occurs first.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One or more trains A.1 Restore train(s) to OPERABLE 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months inoperable. status.

AND At least 100% of the ECCS flow equivalent to a single OPERABLE ECCS train available.

B. Required Action and B.1 Be In MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time not met. AND B.2 Be in MODE 4. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Watts Bar-Unit 1 3.5-4 Amendment No. 55

ECCS - Shutdown 3.5.3 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.3 ECCS - Shutdown LCO 3.5.3 One ECCS train shall be OPERABLE.

APPLICABILITY: MODE 4.

ACTIONS

- -- NOTE-----------------------------------------------------------------

LCO 3.0.4.b Is not applicable to ECCS high head (centrifugal charging) subsystem.

CONDITION REQUIRED ACTION COMPLETION TIME A. Required ECCS residual ------- NOTE----------------

heat removal (RHR) The required ECCS residual heat subsystem inoperable. removal (RHR) subsystem may be inoperable for up to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months for surveillance testing of valves provided that alternate heat removal methods are available via the steam generators to maintain the Reactor Coolant System TaVg less than 3500 F and provided that the required subsystem is capable of being manually realigned to the ECCS mode of operation from the main control room.

A.1 Initiate action to restore Immediately required ECCS RHR subsystem to OPERABLE status.

B. Required ECCS B.1 Restore required ECCS 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months centrifugal charging centrifugal charging subsystem subsystem Inoperable. to OPERABLE status.

(continued)

Watts Bar-Unit 1 3.5-7 Amendment No. 55

Hydrogen Recombiners 3.6.7 3.6 CONTAINMENT SYSTEMS 3.6.7 Hydrogen Recombiners LCO 3.6.7 Two hydrogen recombiners shall be OPERABLE.

APPLICABILITY: MODES 1 and 2.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One hydrogen recombiner A.1 Restore hydrogen recombiner 30 days inoperable. to OPERABLE status. I B. Two hydrogen recombiners B.1 Verify by administrative means 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable. that the hydrogen control function Is maintained. AND Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter AND B.2 Restore one hydrogen 7 days recombiner to OPERABLE status.

C. Required Action and C.1 Be In MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time not met.

Watts Bar-Unit 1 3.6-20 Amendment No.55

ADVs 3.7.4 3.7 PLANT SYSTEMS 3.7.4 Atmospheric Dump Valves (ADVs)

LCO 3.7.4 Four ADV lines shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3, MODE 4 when steam generator is relied upon for heat removal.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One required ADV line A.1 Restore required ADV line to 7 days inoperable. OPERABLE status. I B. One train (two ADV lines) B.1 Restore ADV lines to 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months inoperable due to one train OPERABLE status.

of ACAS Inoperable.

C. Two or more required ADV C.1 Restore all but one ADV line to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months lines inoperable for OPERABLE status.

reasons other than Condition B.

D. Required Action and D.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time not met.

AND D.2 Be In MODE 4 without reliance 18 hours2.083333e-4 days 0.005 hours 2.97619e-5 weeks 6.849e-6 months upon steam generator for heat removal.

Watts Bar-Unit 1 3.7-9 Amendment No. 55

AFW System 3.7.5 3.7 PLANT SYSTEMS 3.7.5 Auxiliary Feedwater (AFW) System LCO 3.7.5 Three AFW trains shall be OPERABLE.

NOTE ---------------------------------------------------

Only one AFW train, which includes a motor driven pump, is required to be OPERABLE in MODE 4.

APPLICABILITY: MODES 1, 2, and 3, MODE 4 when steam generator is relied upon for heat removal.

ACTIONS

NOTE ---------------------------

LCO 3.0.4.b is not applicable when entering MODE 1.

CONDITION REQUIRED ACTION COMPLETION TIME A. One steam supply to turbine A.1 Restore steam supply to 7 days driven AFW pump inoperable. OPERABLE status.

AND 10 days from discovery of failure to meet the LCO B. One AFW train inoperable In B.1 Restore AFW train to 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months MODE 1, 2 or 3 for reasons OPERABLE status.

other than Condition A. AND 10 days from discovery of failure to meet the LCO (continued)

Watts Bar-Unit 1 3.7-11 Amendment No. 55

AC Sources - Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS 3.8.1 AC Sources - Operating LCO 3.8.1 The following AC electrical sources shall be OPERABLE:

a. Two qualified circuits between the offsite transmission network and the onsite Class 1E AC Electrical Power Distribution System; and

b. Four diesel generators (DGs) capable of supplying the onsite Class 1E AC Electrical Power Distribution System.

NOTE----------------------------------------------------

The C-S DG may be substituted for any of the required DGs.

APPLICABILITY: MODES 1, 2,3, and 4.

ACTIONS

NOTE---------------------

LCO 3.0.4.b is not applicable to DGs.

CONDITION REQUIRED ACTION COMPLETION TIME A. One offsite circuit A.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable. OPERABLE offsite circuit.

AND Once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter AND A.2 Declare required feature(s) with 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months from no offsile power available discovery of no Inoperable when Its redundant offsite power to one required feature(s) is train concurrent with inoperable. inoperability of redundant required feature(s)

AND (continued)

Watts Bar-Unit I 3.8-1 Amendment No.55

Boron Concentration 3.9.1 3.9 REFUELING OPERATIONS 3.9.1 Boron Concentration LCO 3.9.1 Boron concentrations of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained within the limit specified in the COLR.

APPLICABILITY: MODE 6.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Boron concentration not A.1 Suspend CORE Immediately within limit. ALTERATIONS.

AND A.2 Suspend positive reactivity Immediately additions.

AND A.3 Initiate action to restore boron Immediately concentration to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.1.1 Verify boron concentration is within the limit specified 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months in COLR.

Watts Bar-Unit 1 3.9-1 Amendment No. 55

Unborated Water Source Isolation Valves 3.9.2 3.9 REFUELING OPERATIONS 3.9.2 Unborated Water Source Isolation Valves LCO 3.9.2 Each valve used to isolate unborated water sources shall be secured in the closed position.

APPLICABILITY: MODE 6.

ACTIONS

-_-_ -- - -- - -__------------------------------------L

--- I t---_--__--____----_____----___--- __--____--

Separate Condition entry is allowed for each unborated water source isolation valve.

CONDITION REQUIRED ACTION COMPLETION TIME A. ------------NOTE------------- A.1 Suspend CORE Immediately Required Action A.3 must ALTERATIONS.

be completed whenever Condition A is entered. AND A.2 Initiate action to secure valve in Immediately One or more valves not closed position.

secured In closed position.

AND A.3 Perform SR 3.9.1.1. 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Watts Bar-Unit I 3.9-2 Amendment No. 55

RHR and Coolant Circulation - Low Water Level 3.9.6 3.9 REFUELING OPERATIONS 3.9.6 Residual Heat Removal (RHR) and Coolant Circulation - Low Water Level LCO 3.9.6 Two RHR loops shall be OPERABLE, and one RHR loop shall be in operation.

APPLICABILITY: MODE 6 with the water level < 23 ft above the top of reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Less than the required A.1 Initiate action to restore Immediately number of RHR loops required RHR loops to OPERABLE. OPERABLE status.

OR A.2 Initiate action to establish Immediately 2 23 ft of water above the top of reactor vessel flange.

(continued)

Watts Bar-Unit 1 3.9-10 Amendment No. 55

v t e Letter Sequence Other
TAC:MC4470, Increase Flexibility in Mode Restraints, Charging Pump Swap Ltop Allowance, Clarify Exception Notes to Be Consistent with the Requirement Being Excepted (Open)
Initiation Request Acceptance... Administration Questions Answers Results Approval... Other: ML050320368, ML050750384
MONTHYEAR2004-09-15 [Table View]

ML050750384

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