ML19072A113

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Final Safety Evaluation for Licensing Topical Report, NEDC-33353P, Licensing Topical Report Application of Gnf Ziron to Gnf Fuel Designs
ML19072A113
Person / Time
Site: 99901376
Issue date: 03/29/2019
From: Dennis Morey
NRC/NRR/DLP/PLPB
To: Catts M P
GE-Hitachi Nuclear Energy Americas
Golla J A, NRR/DLP, 415-1002
References
EPID L-2010-TOP-0003, NEDC-33353P
Download: ML19072A113 (344)


Text

/RA/

Code of Federal RegulationThe reactor core and associated coolant, control, and protection systems shall be designed with the appropriate margin to assure that specified acceptable fuel design limits are not exceeded during any condition of normal operation, including the effects of anticipated operational occurrences.

The reactivity control systems shall be designed to have a combined capability, in conjunction with poison addition by the emergency core cooling system, of reliably controlling reactivity changes to assure that under postulated accident conditions and with appropriate margin for stuck rods the capability to cool the core is maintained.

A system to provide abundant emergency core cooling shall be provided. The system safety function shall be to transfer heat from the reactor core following any loss of reactor coolant at a rate such that (1) fuel and clad damage that could interfere with continued effective core cooling is prevented and (2) clad metal-water reaction is limited to negligible amounts.

f

Inner Surface Oxidation

Outer Surface Oxidation

Shadow Corrosion

there is insufficient evidence to indicate that Zircaloy-2 or Ziron cladding will remain in compliance with the hydrogen limit in all possible operating conditions.

.

Stress

Strain

Strain Fatigue

Fretting Wear

Oxidation and Crud Buildup

Rod Bowing

3.3.1.7 Axial Growth

Rod Internal Pressure

NEDE-31152P, Rev. 8

Limitations and Conditions

  • Code of Federal RegulationsCode of Federal RegulationsCode of Federal Regulations

Code of Federal Regulations

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