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| Entered date | Event description | |
|---|---|---|
| ENS 52223 | 6 September 2016 11:24:00 | On Tuesday, September 6, 2016 at 0827 (EDT), with the reactor at 91% core thermal power (CTP), Pilgrim Nuclear Power Station (PNPS) operators initiated a manual reactor scram due to high reactor water level resulting from feedwater level control oscillation. Other than the feedwater level control oscillations, all other plant systems responded as designed. Plant cooldown is in progress using the High Pressure Coolant Injection System in the pressure control mode. The plant is in hot shutdown. The cause of the feed water level control oscillations is under investigation. This event has no impact on the health and safety of the public. Subsequent to the manual reactor scram the plant experienced the following isolation signals: Group 1 Isolation: Main Steam Isolation Valves Group 2 Isolation: Miscellaneous containment isolation valves Group 6 Isolation: Reactor Water Clean-up Reactor Building (Ventilation) Isolation Actuation The licensee has notified the NRC Senior Resident Inspector. This notification is being made in accordance with 10 CFR 50.72(b)(2)(iv)(B), 'any event that results in actuation of the reactor protection system (RPS) when the reactor is critical...'. This notification is also being made in accordance with 10 CFR 50.72(b)(3)(iv)(A), 'Any event or condition that results in valid actuation of any of the systems listed in paragraph (b)(3)(iv)(B) of this section...' (B)(2) 'General containment isolation signals affecting containment isolation valves in more than one system or multiple main steam isolation valves (MSIVs).' All rods were inserted. The plant is stable with normal off-site power line-up. The licensee will notify the Commonwealth of Massachusetts. |
| ENS 48665 | 11 January 2013 10:16:00 | At 1534 EST on Thursday, January 10, Pilgrim Station operators initiated a manual shutdown of the power plant following a trip of the plant's recirculation pumps. The plant is in a safe condition and plant personnel are investigating the cause. The plant will be restarted after a thorough evaluation and any necessary repairs are completed. The plant had been online continuously for 230 days at the time of the shutdown. The NRC Resident Inspector staff has been informed of this press release and notification. This informational notification is being made in accordance with 10CFR50.72(b)(2)(xi). The licensee will notify the Massachusetts Emergency Management Agency (MEMA). |
| ENS 47199 | 26 August 2011 15:02:00 | At approximately 1345 EDT, on August 26, 2011, Entergy Corporation issued a press release regarding ongoing preparations at Pilgrim Station for hurricane Irene currently located 300 miles SSW of Cape Hatteras, North Carolina traveling in a northerly direction at approximately 14 miles per hour. The purpose of the press release is to re-assure the public regarding the safety and security of the facility and the extent of preparations that are in progress. Current plant operation is not impacted and the release of this information does not indicate a current threat to the facility or the health and safety of the public. The licensee has notified the NRC Resident Inspector. This four (4) hour report is being made in accordance with 10 CFR 50.72(b)(2)(xi). State and local notifications will be made coincident with the Issuance of this Event Report. |