IR 05000443/2012003

IR 05000443-12-003, 04/01/2012 - 06/30/2012, Seabrook Station, Unit No. 1, Routine Integrated Inspection Report

ML12223A073
Person / Time
Site:	Seabrook
Issue date:	08/09/2012
From:	Arthur Burritt Reactor Projects Branch 3
To:	Walsh K NextEra Energy Seabrook
Burritt A
References
IR-12-003
Download: ML12223A073 (37)

Text

{{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION ust 9, 2012

SUBJECT:

SEABROOK STATION, UNIT NO. 1 - NRC INTEGRATED INSPECTION REPORT 05000443/2012003

Dear Mr. Walsh:

On June 30, 2012, the U. S. Nuclear Regulatory Commission (NRC) completed an inspection at Seabrook Station, Unit No. 1. The enclosed inspection report documents the inspection results, which were discussed on June 28, 2012, with you and other members of your staff.

The inspection examined activities conducted under your license as they relate to safety and compliance with the Commissions rules and regulations and with the conditions of your license.

The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel.

Based on the results of this inspection no findings were identified.

In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system (ADAMS). ADAMS is accessible from the NRC website at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, /RA/ Arthur L. Burritt, Chief Reactor Projects Branch 3 Division of Reactor Projects Docket No. 50-443 License No: NPF-86

Enclosure:

Inspection Report No. 05000443/2012003 w/ Attachment: Supplemental Information

REGION I== Docket No.: 50-443 License No.: NPF-86 Report No.: 05000443/2012003 Licensee: NextEra Energy Seabrook, LLC Facility: Seabrook Station, Unit No.1 Location: Seabrook, New Hampshire 03874 Dates: April 1, 2012 to June 30, 2012 Inspectors: W. Raymond, Senior Resident Inspector J. DeBoer, Acting Resident Inspector K. Dunham, Reactor Engineer J. Noggle, Sr. Health Physicist T. Ziev, Reactor Engineer T. OHara, Reactor Inspector T. Burns, Reactor Inspector Approved by: Arthur Burritt, Chief Reactor Projects Branch 3 Division of Reactor Projects Enclosure

SUMMARY OF FINDINGS

IR 05000443/2012003; 04/01/2012 - 06/30/2012; Seabrook Station, Unit No. 1; Routine

Integrated Inspection Report.

This report covered a three-month period of inspection by resident inspectors and announced inspections performed by regional inspectors. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Revision 4, dated December 2006.

No findings were identified

REPORT DETAILS

Summary of Plant Status

Seabrook operated at 85% power from the start of the period until April 20, 2012, and at 45% power from April 20 to April 25 during repairs on the B main feed water pump controls.

On April 25, following completion of repairs operators restore the plant to 85% power where it remained for the rest of the period. On June 13, 2012, operators responded to an ammonia hydroxide spill in the stock room of the site administrative building. The spill resulted in the declaration of a Notice of Unusual Event because the toxic gases released were deemed detrimental to normal operation of the plant. More details for this event are discussed in Section 4OA3 of this report.

REACTOR SAFETY

Cornerstones: Initiating Events and Mitigating Systems

1R01 Adverse Weather Protection

.1 Readiness for Seasonal Extreme Weather Conditions

a. Inspection Scope

The inspectors performed a review of NextEras readiness for the onset of seasonal high temperatures. The review focused on ventilation and emergency diesel generators (EDGs). The inspectors reviewed the Updated Final Safety Analysis Report (UFSAR),technical specifications, control room logs, and the corrective action program to determine what temperatures or other seasonal weather could challenge these systems, and to ensure NextEras personnel had adequately prepared for these challenges. The inspectors reviewed station procedures, including NextEras seasonal weather preparation procedure and applicable operating procedures. The inspectors performed walkdowns of the selected systems to ensure station personnel identified issues that could challenge the operability of the systems during hot weather conditions. Documents reviewed for each section of this inspection report are listed in the Attachment.

b. Findings

No findings were identified.

.2 External Flooding

a. Inspection Scope

During the week of May 14, 2012, the inspectors performed an inspection of the external flood protection measures for Seabrook. The inspectors reviewed the UFSAR, Chapter 2.4., Hydrologic Engineering, which depicted the design flood levels and protection areas containing safety-related equipment to identify areas that may be affected by external flooding. The inspectors conducted a general site walkdown of all external areas of the plant, including the turbine building, auxiliary building, and the switchyard to ensure that NextEra erected flood protection measures in accordance with design specifications. The inspectors also reviewed operating procedures for mitigating external flooding during severe weather to determine if NextEra planned or established adequate measures to protect against external flooding events.

b. Findings

No findings were identified.

.3 Summer Readiness of Offsite and Alternate Alternating Current (AC) Power Systems

a. Inspection Scope

The inspectors performed a review of plant features and procedures for the operation and continued availability of the offsite and alternate AC power system to evaluate readiness of the systems prior to seasonal high grid loading. The inspectors reviewed NextEras procedures affecting these areas and the communications protocols between the transmission system operator and NextEra. This review focused on changes to the established program and material condition of offsite alternate AC power equipment.

When required, the inspectors assessed whether NextEra established and implemented appropriate procedures and protocols to monitor and maintain availability and reliability of both the offsite AC power system and the onsite alternate AC power system. The inspectors evaluated the material condition of the associated equipment by interviewing responsible NextEra personnel, reviewing condition reports and open work orders, and walking down portions of the offsite and alternate AC power systems including the 345 kilovolt (KV) switchyard.

b. Findings

No findings were identified. ==1R04 Equipment Alignment

.1 Partial System Walkdowns

==

a. Inspection Scope

The inspectors performed partial walkdowns of the following systems: B emergency feed water (EFW) with A EFW out of service, May 8, 2012 B service water (SW) train during planned maintenance on A SW train, May 16-17, 2012 A EFW with B EFW out of service, May 22, 2012 A EDG during planned maintenance activities on the B EDG on May 1, 2012 B EDG following restoration from maintenance on May 7, 2012 The inspectors selected these systems based on their risk-significance for the current plant configuration or following realignment. The inspectors reviewed applicable operating procedures, system diagrams, the UFSAR, technical specifications, work orders, condition reports, and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have impacted system performance of their intended safety functions. The inspectors also performed field walkdowns of accessible portions of the systems to verify system components and support equipment were aligned correctly and were operable.

b. Findings

No findings were identified.

.2 Full System Walkdown

a. Inspection Scope

The inspectors performed a complete system walkdown of accessible portions of the containment building spray (CBS) system to verify the equipment lineup was correct for the period May 7, 2012 through May 9, 2012. The inspectors reviewed operating procedures, drawings, equipment lineup procedures, system health reports and the UFSAR to verify the system was aligned to perform its required safety functions. The inspectors also reviewed electrical power availability and equipment cooling, hanger and support functionality, and operability of support systems. The inspectors performed field walkdowns of accessible portions of the systems to verify system components and support equipment were aligned correctly and operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no deficiencies. The inspectors also reviewed whether NextEra staff had properly identified equipment issues and entered them into the corrective action program for resolution with the appropriate significance characterization.

Additionally, the inspectors reviewed a sample of related condition reports and work orders to ensure NextEra appropriately evaluated and resolved any deficiencies.

b. Findings

No findings were identified. ==1R05 Fire Protection