United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for May 3, 1999

                       Headquarters Daily Report

                         MAY 03, 1999

                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED

HEADQUARTERS                           X
REGION I                               X
REGION II           X
REGION III                             X
REGION IV                              X

Licensee/Facility:                     Notification:

Northern States Power Co.              MR Number: 3-99-0036
Monticello 1                           Date: 05/03/99
Monticello,Minnesota                   E-mail from Resident Inspectors
Dockets: 50-263

Subject: Reactor Startup from Forced Outage


On May 1, 1999, the licensee completed an unplanned outage and returned
the unit to 100 percent power. The outage began on April 22, 1999, when
the reactor scrammed due to low reactor water level which was caused by a
malfunction in the feedwater control system.

The licensee repaired the feedwater control system and performed other
minor outage related maintenance prior to the startup.

Regional Action:

The resident inspectors observed portions of the outage maintenance
activities and portions of the reactor startup.

Contact:  R. Lanksbury               (630)829-9631
REGION III  MORNING REPORT     PAGE  2          MAY  3, 1999

Licensee/Facility:                     Notification:

Commonwealth Edison Co.                MR Number: 3-99-0037
Quad Cities 1                          Date: 05/03/99
Cordova,Illinois                       E-Mail
Dockets: 50-254

Subject: Unit 1 Startup Following Outage To Repair Jet Pump Riser Crack


Unit 1 startup commenced on Thursday, April 29, 1999, following an April
10 planned shutdown to install a brace made necessary due to a reactor
recirculation jet pump riser crack. The Unit 1 reactor was critical on
April 30, and the generator was synchronized to the electrical grid on
May 1, 1999. The crack on the jet pump 7 and 8 riser pipe was identified
during the Unit 1 refueling outage which ended December 5, 1998.
Operations were limited during the subsequent period to prevent
additional cracking before repairs could be made. Other outage activities
included noble metal injection for chemistry control, performance of
18-month interval surveillance logic tests, and containment piping
overpressure modifications.

Regional Action:

The resident inspectors observed shutdown, startup and selected outage

Contact:  M. Ring                    (630)829-9703
REGION III  MORNING REPORT     PAGE  3          MAY  3, 1999

Licensee/Facility:                     Notification:

Iowa Electric Light & Power Co.        MR Number: 3-99-0038
Duane Arnold 1                         Date: 05/03/99
Palo,Iowa                              SRI via LAN
Dockets: 50-331



On April 29, 1999, at 7:42 p.m. (CDT), the licensee commenced a reactor
startup following a shutdown to identify and repair an intermittent main
generator ground. The reactor was critical at 11:22 p.m. and the main
turbine was connected to the grid at 7:19 p.m. on April 30.

The licensee identified a torn copper "leaf" used to connect the positive
main terminal studs to the main generator field. The main terminal studs
were last removed during an outage in 1988 to support main generator
preventive maintenance work. The main terminal studs were over-torqued
when reinstalled which led to the torn copper leaf. Through years of
operation the torn copper pealed away from the main terminal stud due to
centrifugal force and caused the intermittent electrical grounds, which
initially started on January 1, 1999. No other major work activities were
conducted during the 11-day outage.

Regional Action:

The resident inspectors observed portions of the plant startup and power
ascension activities.

Contact:  Paul Prescott              (319)851-5111
Page Last Reviewed/Updated Thursday, March 29, 2012