ML061990300

Technical Specifications, Proposed Change, Page 3/4 1-5

ML061990300
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/19/2005
From:	Office of Nuclear Reactor Regulation
To:
References
Download: ML061990300 (1)

Text

REACTIVITY CONTROL SYSTEMS MODERATOR TEMPERATURE COEFFICIENT LIMITING CONDITION FOR OPERATION 3.1.1.4 The moderator temperature coefficient (MTC) shall be within the limits specified in the CORE OPERATING LIMITS REPORT. The maximum upper design limit shall be:

a. Less positive than +0.5x10 4 Ak/k/OF whenever THERMAL POWER is _*70% of RATED THERMAL POWER, and

b. Less positive than 0.0 Ak/k/°F whenever THERMAL POWER is > 70% of RATED THERMAL POWER.

APPLICABILITY: MODES 1 and 2*#

ACTION:

With the moderator temperature coefficient outside any one of the above limits, be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.1.1.4.1 The MTC shall be determined to be within its limits by confirmatory measurements.

MTC measured values shall be extrapolated and/or compensated to permit direct comparison with the above limits. (Note 1)'

4.1.1.4.2 The MTC shall be determined at the following frequencies and THERMAL POWER conditions during each fuel cycle:

a. Prior to initial operation above 5% of RATED THERMAL POWER, after each fuel loading. (Note 1)*

b. At any THERMAL POWER, prior to reaching a RATED THERMAL POWER equilibrium boron concentration of 800 ppm.

c. At any THERMAL POWER, within 14 EFPD after reaching a RATED THERMAL POWER equilibrium boron concentration of 300 ppm. (Note 2) O

• With K'ff _ 1.0.

1. See Special Test Exception 3.10.2.

Note 1: For fuel cycles that meet the applicability requirements given in WCAP-1 6011-P-A, the verification prior to entering MODE 1 may be made using the predicted MTC as adjusted for the measured boron concentration.,

Note 2: The MTC determination of surveillance 4.1.1.4.2.c is not required if the results of the tests required in surveillances 4.1.1.4.2.a and 4.1.1.4.2.b are within a tolerance of

_ 0.16'x 10"4 Ak/k/ 0 F from the Corresponding design values. For cycles that meet the applicability requirements given in WCAP-1 6011-P-A, the MTC determination of surveillance 4.1.1.4.2.c is not required if the result of the test required in surveillance 4.1.1.4.2.b is within a tolerance of +/- 0.16 x 10Q4 Ak/k/OF from the corresponding design value.Y ARKANSAS - UNIT 2 3/4 1"-5 Amendment No. 84,8e,&+,94,+-57,2,