ML022880122

Tech Spec Pages for Amendments 251 and 232 Refueling Operations - Fuel Decay Time Prior to Commencing Core Alterations or Movement of Irradiated Fuel

ML022880122
Person / Time
Site:	Salem
Issue date:	10/10/2002
From:	NRC/NRR/DLPM
To:
References
TAC MB5488, TAC MB5489
Download: ML022880122 (2)

Text

REFUELING OPERATIONS DECAY TIME LIMITING CONDITION FOR OPERATION 3.9.3 The reactor shall be subcritical for at least:.

a. 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> - Applicable through year 2010.

b. 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> APPLICABILITY: Specification 3.9.3.a - From October 15ý" through May 15th, during movement of irradiated fuel in the reactor pressure vessel.

through October 14 t, Specification 3.9.3.b - From May 16.'

during movement of irradiated fuel in the reactor pressure vessel.

ACTION:

With the reactor subcritical for less than the required time, suspend all operations involving movement of irradiated fuel in the reactor pressure vessel. The provisions of Specification 3.0.3 are not applicable.

SURVEILLANCE REQUIREMENTS 4.9.3 The reactor shall be determined to have been subcritical as required by verification of the date and time of subcriticality prior to movement of irradiated fuel in the reactor pressure vessel.

SALEM - UNIT 1 3/4 9-3 Amendment No. 251

3/4.9 REFUELING OPERATIONS BASES 3/4.9.1 BORON CONCENTRATION The limitations on minimum boron concentration (2000 ppm) ensure that:

1) the reactor will remain subcritical during CORE ALTERATIONS, and 2) a is maintained for reactivity control in the water uniform boron concentration access to the reactor vessel. The limitation on Keff of no volume having direct greater than 0.95 which includes a conservative allowance for uncertainties, is sufficient to prevent reactor criticality during refueling operations.

The sampling and analysis required by surveillance requirement 4.9.1.2 ensures the boron concentration required by Limiting Condition of Operation is met. Sampling and analysis of the refueling canal is required if 3.9.1 water exists in the refueling canal, regardless of the amount.

3/4.9.2 INSTRUMENTATION The OPERABILITY of the source range neutron flux monitors ensures that redundant monitoring capability is available to detect changes in the reactivity condition of the core.

3/4.9.3 DECAY TIME The minimum requirement for reactor subcriticality prior to movement of fuel assemblies in the reactor pressure vessel ensures that irradiated time has elapsed to allow the radioactive decay of the short lived sufficient fission products. The 100-hour decay time is consistent with the assumptions in the fuel handling accident analyses and the resulting dose used using the Alternative Source Term described in Reg. Guide 1.183.

calculations reactor subcriticality also ensures that the The minimum requirement for consistent with that assumed in the Spent Fuel Pool cooling decay time is analysis. Delaware River water average temperature between October 1 5 th and determined from historical data taken over 30 years. The use of May 1 5 th is to select maximum temperature is consistent with Reg. Guide 30 years of data 1.27, "Ultimate Heat Sink for Nuclear Power Plants".

has the potential to occur during both applicability time A core offload In order not to exceed the analyzed Spent Fuel Pool cooling frames.

0 capability to maintain the water temperature below 180 F, two decay time are provided. In addition, PSEG has developed and implemented a Spent limits Decay Heat Management Program as part of the Salem Fuel Pool Integrated This program requires a pre-outage assessment of the Outage Risk Assessment.

loads and heatup rates to assure available Spent Fuel Spent Fuel Pool heat Pool cooling capability prior to offloading fuel.

SALEM - UNIT 1 B 3/4 9-3 Amendment No. 251