ML19320A316

Proposed Tech Specs 3.1.7 Re Moderator Temp Coefficient of Reactivity

ML19320A316
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/30/1978
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19320A305	List: ML19320A304 ML19320A316
References
NUDOCS 8004210592
Download: ML19320A316 (1)

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a 3.1.7 Moderator Tenperature Coefficient of Reactivity Specification 3.1.7.1 The moderator temperature coefficient (MIC) shall be non-posicive whenever thermal power is >95% of rated thermal power and shall be less positive than 0.5 x 10-4 Ak/k/*F whenever thenral power is <95% of rated themal power and the reactor is not shutdown.

3.1.7.2 The MIC shall be detennined to be within its limits by confinnatory measurements prior to initial operation above 5% of rated thermal power after each fuel loading. MIC measured values shall be extra-polated and/or ccznpensated to permit direct cxanparison with the limits in 3.1.7.1 above.

Bases A non-positive moderator coefficeint at power levels above 95% of rated power is specified such that the maximun clad tenperatures will not exceed the Final Acceptance Criteria based on IOCA analyses. Below 95% of rated power the Final Acceptance Criteria will not be exceeded with a positive moderator tsuperature coefficient of +0.5 x 10-4 Ak/k/ F mrrected to 95%

of rated power. All other accident analyses as reported in the FSAR have been performed for a range of moderator tenperature coefficients including

+0.5 x 10-4 Ak/k/*F.

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