ML080220378

Watts Bar, Unit 1 - Tech Spec Pages for Amendment 67 Regarding the Maximum Number of Tritium Producing Burnable Assembly Rods in the Reactor Core

ML080220378
Person / Time
Site:	Watts Bar
Issue date:	01/18/2008
From:	NRC/NRR/ADRO/DORL/LPLII-2
To:
Moroney B T, NRR/DORL, 415-3974
Shared Package
ML073530482	List: ML073520546 ML080220378
References
TAC MD5430
Download: ML080220378 (3)

Text

Accumulators 3.5.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.1.1 Verify each accumulator isolation valve is fully open. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.5.1.2 Verify borated water volume in each accumulator is 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />s_> 7630 gallons and < 8000 gallons.SR 3.5.1.3 Verify nitrogen cover pressure in each accumulator is 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />s_> 610 psig and 660 psig SR 3.5.1.4 --------------------------

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

31 days The number of TPBARs in the reactor core is contained in the Core Operating Limits Report (COLR) AND for each operating cycle.--.------------------------------------------------

NOTE ---------Only required to be Verify boron concentration in each accumulator is as performed for provided below depending on the number of tritium affected producing burnable absorber rods (TPBARs) installed accumulators.

in the reactor core for this operating cycle: Once within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution Number of TPBARs Boron Concentration Ranges volume increase of 0-400 > 3000 ppm and < 3300 ppm 75 gallons, that is not the result of addition from the refueling water storage tank.(continued)

Watts Bar-Unit 1 3.5-2 Amendment 7, 21, 40, 48. 67 RWST 3.5.4 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.4.1 -----------------------

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

Only required to be performed when ambient air temperature is < 60'F or > 105'F.Verify RWST borated water temperature is 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s> 60°F and < 105'F.SR 3.5.4.2 Verify RWST borated water volume is 7 days> 370,000 gallons.SR 3.5.4.3 ------------------------

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

The number of TPBARs in the reactor core is contained in the Core Operating Limits Report (COLR) for each operating cycle.Verify boron concentration in the RWST is as provided 7 days belowdepending on the number of tritium producing burnable absorber rods (TPBARs) installed in the reactor core for this operating cycle: Number of TPBARS Boron Concentration Ranges 0-400 >3100 ppm and < 3300 ppm Watts Bar-Unit 1 3.5-10 Amendment 7, 40, 48, 67 Design Features 4.0 4.0 DESIGN FEATURES 4.1 Site 4.1.1 Site and Exclusion Area Boundaries The site and exclusion area boundaries shall be as shown in Figure 4.1-1.4.1.2 Low Population Zone (LPZ)The LPZ shall be as shown in Figure 4.1-2 (within the 3-mile circle).4.2 Reactor Core 4.2.1 Fuel Assemblies The reactor shall contain 193 fuel assemblies.

Each assembly shall consist of a matrix of Zircalloy or Zirlo fuel rods with an initial composition of natural or slightly enriched uranium dioxide (U0 2) as fuel material.

Limited substitutions of zirconium alloy or stainless steel filler rods for fuel rods, in accordance with approved applications of fuel rod configurations, may be used. Fuel assemblies shall be limited to those fuel designs that have been analyzed with applicable NRC staff approved codes and methods and shown by tests or analyses to comply with all fuel safety design bases. A limited number of lead test assemblies that have not completed representative testing may be placed in nonlimiting core regions. For Unit 1, Watts Bar is authorized to place a maximum of 400 Tritium Producing Burnable Absorber Rods into the reactor in an operating cycle.4.2.2 Control Rod Assemblies The reactor core shall contain 57 control rod assemblies.

The control material shall be boron carbide with silver indium cadmium tips as approved by the NRC.I (continued)

Watts Bar Unit 1 4.0-1 Amendment 8, 40, 48, 67