ML051300148

G20050125 - Supplement Dated 05/05/05 to 2.206 Petition Requesting Backup Power Supplies to Emergency Notification Systems

ML051300148
Person / Time
Site:	Diablo Canyon
Issue date:	05/05/2005
From:	Gunter P Nuclear Information & Resource Service (NIRS)
To:	William Reckley NRC/NRR/DLPM/LPD4
Reckley W, NRR,/DLPM/LPDIV-1, 415-1323
Shared Package
ML051330437	List: ML051240288 ML051300148
References
2.206, G20050123, G20050125, G20050136, TAC MC6185
Download: ML051300148 (2)

Text

Nuclear Information and Resource Service 1424 1 6 h Street NW Suite 404 Washington, DC 20036 Tel. 202 328 0002 vwww.nirs.org May 05, 2005 William Reckley Petition Manager (10 CFR 2.206)

Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 By email c/o Donna Skay, Petition Manager, NRR Division of Licensing Project Management: dms6@nrc.gov Supplement 2 to Requested Emergency Enforcement Action (10 CFR 2.206) Filed February 23, 2005 Regarding Emergency Backup Power To Emergency Notification Systems Mr. Reckley:

On behalf of the petitioners filing the February 23, 2005 Emergency Enforcement Petition (URL attached) requesting NRC to issue generic communications to all Part 50 operating licensees to assure the reliability of power to Emergency Notification Systems and Orders to require licensees to install and maintain Emergency Notification System backup power sources independent of the electrical grid, NIRS submits the following supplemental material.

Attached please find URL:

http://www.sanluisobispo.com/mld/sanluisobispotribune/living/community/

11560545.htm San Luis Obispo Tribune May 04, 2005 article CountyRoundup The San Luis Obispo Tribune May 04, 2005 DIABLO CANYON PG&E starts siren replacement Pacific Gas and Electric Co. has begun replacing the 131 emergency warning sirens surrounding Diablo Canyon nuclear power plant.

The older sirens, which date from the 1980s, are being replaced with new ones equipped with battery backups. The replacement project is expected to be completed late next year.

PG&E decided to undertake the project following the December 2003 San Simeon Earthquake, which knocked out electrical power to many of the sirens. Although there was no emergency at the plant that required the use of the sirens, the possibility that the sirens might fail during a public emergency that included power outages caused a public outcry and prompted the utility to replace the sirens sooner than planned.

-- David Sneed The petitioners submit this as further supporting evidence demonstrating that existing emergency sirens can be back fitted to assure operation independent of vulnerable electric grid systems. Currently, the electric grid is the sole power system to many public Emergency Notification Systems around nuclear power stations which can result in the simultaneous failure of emergency notification systems during electrical grid disturbances and an emergency at nuclear power stations resulting from an accident and potentially an act of sabotage.

Petitioners submit that such upgrades to emergency notification systems to provide emergency back up power systems needs to be fully analyzed by NRC to assure performance of emergency notification performance for the duration of an emergency.

Petitioners further submit that upgrades to emergency notification systems to provide emergency back up power systems needs to be uniformly applied over all Part 50 licensees with uniform standards, inspection procedures, and enforcement to reasonably assure uniform performance.

Thank you, Paul Gunter, Director Reactor Watchdog Project NIRS Attachments:

1) URL to San Luis Obispo Tribune, May 04, 2005, County Roundup http://www.sanluisobispo.com/mld/sanluisobispotribune/living/community/

11560545.htm Cc: Petitioners