This newsletter provides feedback on Operating Experience (OE) from significant safety related events at nuclear power plants (NPPs) worldwide, every three months.

This Quarterly Report compiles the NPP events that were reported publicly during the period from 1st October to 31st December 2018.

Five events were selected from the short-list for this Newsletter:

1. 11/09/2018: Pressurizer instrument nozzle leak due to primary water stress corrosion cracking (US / ST LUCIE 2).

2. 30/09/2018: Automatic reactor scram due to loss of two condensate pumps (US / PEACH BOTTOM 3).

3. 25/10/2018: Insufficient seismic resistance of a bolted assembly (FRANCE / CHINON B1/B2).

4. 08/11/2018: Late detection of loose electrical connections on several valves of the RHR system (FRANCE / CIVAUX 1).

5. 04/12/2018: Catwalks not compliant with seismic resistance requirements (FRANCE / MULTI-SITE).

Please see attachment for more details.

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