Morning Report for January 10, 2007

Headquarters Daily Report

• REGION IV

REGION IV

SMOKE IN THE RADIOLOGICALLY CONTROLLED AREA/MECHANICAL AUXILIARY BUILDING

Licensee/Facility: STP NUCLEAR OPERATING CO. South Texas 1 WADSWORTH, Texas Dockets: 05000498 [1] W-4-LP License No:

Notification: MR Number: 4-2007-0001 Date: 01/10/2007 Call / Fax from Licensee

Discussion:

On January 10, 2007, at 5:34 a.m., the STP Unit 2 control room received numerous smoke alarms for the Mechanical Auxiliary Building (MAB) 60-foot elevation. Plant operators entered their emergency procedure and the fire brigade was dispatched to the area. A significant amount of smoke was present in the area. The fire brigade leader requested offsite assistance from the Bay City fire department. It was determined that the source of the smoke was from a nonsafety-related heater control panel that provides power to a ventilation duct heater. No open flames were observed during this event. The electrical supply breaker for the affected heater was opened and the MAB locker room supply fan was secured. Following this action, the smoke began to quickly dissipate. Personnel accessed the duct work and determined that there was no visible fire. Before arriving on site, the Bay City Fire Department was contacted and informed that their assistance was no longer required. The fire brigade leader reported that the event was under control at 5:48 a.m.

The licensee did not enter their Emergency Plan because the entry criteria were not satisfied in that no flames were observed, and the event was under control in less than 15 minutes.

This morning report is being submitted for information only. The resident inspectors responded to the site and continue to monitor the licensee's actions and investigation of the event.

Contacts:

Name	Office Abbrev	Phone No	E-Mail
JOHNSON, CLAUDE E	R4	(817) 860-8148	CEJ1@nrc.gov