Section 3.7 PLANT SYSTEMS

Question 1

What is T.S. 3.7.1 Main Steam Safety Valves? Any 1-hour or less actions?

Answer 1

T.S. 3.7.1 Main Steam Safety Valves

Applicable in Modes 1-3

Requires 23 of 24 MSSV to be operable.

Lift at +/- 3 psi of

1000, 1020 and 1040 psia.

No 1`-hour or less actions.

Question 2

What is T.S. 3.7.2 Main Steam Isolation Valves? Any 1-hour or less actions?

Answer 2

T.S. 3.7.2 Main Steam Isolation Valves

Applicable in Mode 1 and Modes 2 & 3 except when both MSIVs are closed and de-activated.

Two MSIVs shall be operable.

No 1-hour or less actions.

Question 3

What is T.S. 3.7.3 Main Feedwater Regulating Valves (MFRVs) and MFRV Bypass Valves? Any 1-hour or less actions?

Answer 3

T.S. 3.7.3 Main Feedwater Regulating Valves (MFRVs) and MFRV Bypass Valves

Modes 1, 2 and 3, except when BOTH MVRV and BOTH FR BYPASS Valves are closed and de-activated or isolated by closed manual valves.

Two MFRVs and two MFRV bypass valves shall be OPERABLE.

No 1-hour or less actions.

Question 4

What is T.S. 3.7.4 Atmospheric Dump Valves (ADVs)? Any 1-hour or less actions?

Answer 4

T.S. 3.7.4 Atmospheric Dump Valves (ADVs)

Applicable in Modes 1-3 and Mode 4 when a steam generator is relied upon for heat removal.

One ADV per steam generator shall be OPERABLE.

No 1-hour or less actions.

Question 5

What is T.S. 3.7.5 Auxiliary Feedwater System?

Any 1-hour or less actions?

Answer 5

T.S. 3.7.5 Auxiliary Feedwater System

Applicable in Modes 1-3 and Mode 4 when steam generator is relied upon for heat removal.

Two AFW Trains shall be operable.

Less than 100% required AFW to both SG available - immediately initiate action to restore 1 AFW train to OPERABLE status.

Question 6

How many trains of AFW are required in Mode 4?

When is the steam driven pump required to be OPERABLE?

How long can two AFW pumps be plance in manual for testing?

Answer 6

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

The steam driven pump is only required to be OPERABLE prior to making the reactor critical.

Two AFW pumps may be placed in manual for testing, for a period of up to 4 hours.

Question 7

What is T.S. 3.7.6 Condensate Storage and Supply? Anu 1-hour or less actions?

Answer 7

T.S. 3.7.6 Condensate Storage and Supply

Applicable during Modes 1-3 and Mode 4 when steam generator relied upon for heat removal?

The combined useable volume of the Condensate Storage Tank (CST) and Primary Makeup Storage Tank (T-81) shall be ≥ 100,000 gallons.

N0 1-hour less actions.

T-2 > = 71%

T-81 >= 83%

Question 8

What is T.S. 3.7.7 Component Cooling Water (CCW) System? Any 1-hour or less actions?

Answer 8

T.S. 3.7.7 Component Cooling Water (CCW) System

Applicable in Modes 1-4

Two trains of CCW SHALL be OPERABLE.

Less than 100% required post accident CCW cooling available - enter LCO 3.0.3 immediately.

Question 9

What is T.S. 3.7.8 Service Water System (SWS)? Any 1-hour or less actions?

Answer 9

T.S. 3.7.8 Service Water System

Applicable in Modes 1-4

Two SWS trains SHALL be OPERABLE.

Less than 100% post accident SWS cooling capability, enter LCO 3.0.3 immediately.

Question 10

What is T.S. 3.7.9 Ultimate Heat Sink? Any 1-hour or less actions?

Answer 10

T.S. 3.7.9 Ultimate Heat Sink

Applicable in Modes 1-4

The UHS SHALL be OPERABLE.

>= 568.25 feet

<= 85F

No 1-hour or less actions.

Question 11

What is T.S. 3.7.10 Control Room Ventilation (CRV) Filtration? Any 1-hour or less actions?

Answer 11

T.S. 3.7.10 Control Room Ventilation (CRV) Filtration

• Applicable in MODES 1 - 4,
• During CORE ALTERATIONS,
• During movement of irradiated fuel assemblies,
• During movement of a fuel cask in or over the Spent Fuel Pool (SFP).

Two CRV Filtration trains shall be OPERABLE.

• A filtration train or both filtration trains inoperable due to inoperable control room envelope - IMMEDIATELY commence mitigating actions.
• A filtration train not restored to OPERABLE status within 7-days; THEN suspend core alterations, cask movements over irradiated fuel, or irradiated fuel movements OR place OPERABLE train in Emergency.

Question 12

What is T.S. 3.7.11 Control Room Ventilation (CRV) Cooling? Any 1-hour or less actions?

Answer 12

3.7.11 Control Room Ventilation (CRV) Cooling

• MODES 1 - 4,
• During CORE ALTERATIONS,
• During movement of irradiated fuel assemblies,
• During movement of a fuel cask in or over the Spent Fuel Pool (SFP).

Two CRV Cooling trains shall be OPERABLE.

A cooling train not restored to OPERABLE status within 30-days; THEN suspend core alterations, cask movements over irradiated fuel, or irradiated fuel movements OR place OPERABLE train in Emergency.

Question 13

What is T.S. 3.7.12 Fuel Handling Area Ventilation System? Any 1-hour or less actions?

Answer 13

T.S. 3.7.12 Fuel Handling Area Ventilation System

The Fuel Handling Area Ventilation System shall be OPERABLE with one fuel handling area exhaust fan aligned to the emergency filter bank and in operation.

• During movement of irradiated fuel assemblies in the fuel handling building when irradiated fuel assemblies with < 30 days decay time are in the fuel handling building,
• During movement of a fuel cask in or over the SFP when irradiated fuel assemblies with < 90 days decay time are in the fuel handling building,
• During CORE ALTERATIONS when irradiated fuel assemblies with < 30 days decay time are in the containment with the equipment hatch open,
• During movement of irradiated fuel assemblies in the containment when irradiated fuel assemblies with < 30 days decay time are in the containment with the equipment hatch open.

Immediately suspend fuel moves, core alterations or cask moves over SFP if Fuel Handling Area Ventilation System not aligned or in operation. OR Fuel Handling Area Ventilation System inoperable.

Question 14

What is T.S. 3.7.13 Engineered Safeguards Room Ventilation (ESRV) Dampers?

Any 1-hour or less actions?

Answer 14

3.7.13 Engineered Safeguards Room Ventilation (ESRV) Dampers

Applicability Modes 1-4

Two ESRV Damper trains shall be OPERABLE.

IMMEDIATELY Initiate action to isolate associated ESRV Damper train(s) for inoperable train.

Question 15

What is T.S. 3.7.14 Spent Fuel Pool (SFP) Water Level?

Any 1-hour or less actions?

Answer 15

T.S. 3.7.14 Spent Fuel Pool (SFP) Water Level

Applicable During movement of irradiated fuel assemblies in the SFP, During movement of a fuel cask in or over the SFP.

The SFP water level shall be ≥ 647 ft elevation.

• SFP water level not within limit, IMMEDIATELY suspend movement of irradiated fuel assemblies in the SFP or fuel cask in or over SFP.

Question 16

What is T.S. 3.7.15 Spent Fuel Pool (SFP) Boron Concentration? Any 1-hour or less actions?

Answer 16

T.S. 3.7.15 Spent Fuel Pool Boron

Applicability - When fuel assemblies are stored in the Spent Fuel Pool.

The SFP boron concentration shall be ≥ 1720 ppm.

Not within limit, IMMEDIATELY suspend movement of fuel assemblies in the SFP and actions to restore concentration.

Question 17

What is T.S. 3.7.16 Spent Fuel Pool Storage?

Any 1-hour or less actions?

Answer 17

Storage in the spent fuel pool shall be as follows:

Each fuel assembly and non-fissile bearing component stored in a Region I Carborundum equipped storage rack shall be within the limitations in Specification 4.3.1.1 and, as applicable, within the requirements of the maximum nominal planar average U-235 enrichment and burnup of Tables 3.7.16-2, 3.7.16-3, 3.7.16-4 or 3.7.16-5,

Fuel assemblies in a Region I Metamic equipped storage rack shall be within the limitations in specification 4.3.1.2, and

The combination of maximum nominal planar average U-235 enrichment, burnup, and decay time of each fuel assembly stored in Region II shall be within the requirements of Table 3.7.16-1.

Question 18

What is T.S. 3.7.17 Secondary Specific Activity?

Any 1-hour or less actions?

Answer 18

T.S. 3.7.17 Secondary Specific Activity

Modes 1-4

The specific activity of the secondary coolant shall be ≤ 0.10 μCi/gm DOSE EQUIVALENT I-131.