Event Notification Report for June 02, 1999

AGREEMENT STATE REPORT

"Abstract: A Troxler gauge Model 3411 B (Serial # 9816) was run over and damaged by a bulldozer at a construction site near El Dorado, Arkansas. The gauge contained approximately 9 millicuries of Cesium-137 and 44 millicuries of Americium-241: beryllium. The outer case of the gauge was damaged and the source rod was bent. The licensee was working under reciprocity with a Louisiana Radioactive Material License (LA-5382-L01). The licensee was able to retrieve the gauge, assess the damage and return the gauge to the storage location. A leak test was performed and Troxler Labs was notified. A health physicist from the Arkansas Dept. of Health investigated the incident on June 3, 1999. It was noted during investigation that the shutter was partially opened resulting in doserate of 50 mR/hour at contact. Further investigation is on going.

"Arkansas License No: ARK-REC-232; Reciprocity Licensee: AQUATERRA, INC., LA-5382L01, of PORT ALLEN, LA"

REMOTE TONE ALERT RADIO SYSTEM ACTIVATION FUNCTIONAL TEST FAILURE

Primary and backup systems failed during the weekly functional test. The licensee was able to activate the tone alert system locally at the 18 minute point from the start of the test. However, they are required to be able to activate the system within 15 minutes.

Personnel have been designated to activate the system locally if necessary. Repairs to the remote activation equipment are in progress.

The licensee notified the NRC resident inspector.


* * * UPDATE AT 1400 ON 6/2/99 BY HUNTER, TAKEN BY WEAVER * * *

THE TONE ALERT SYSTEM WAS RETURNED TO SERVICE AT 1359.

HOO NOTIFIED RDO (BARR).

HPCI INOPERABLE

Upon opening MO-2036 during the performance of a HPCI surveillance, a HPCI turbine inlet high drain pot level alarm was received. HPCI was declared inoperable. The alarm cleared 17 minutes after initiation. HPCI is available if called upon.

An operability test will be run prior to declaring HPCI operable. The licensee will notify the NRC resident inspector.

- NRC BULLETIN 91-01, 24 HOUR REPORT -

At 1500 on 06/02/99, it was determined that the mass control within a primary High Efficiency Particulate Air (HEPA) filter had been exceeded. This primary HEPA filter is on the combined exhaust of a utility hood and oxidation furnace.

Maintenance personnel discovered this situation in the Dry Scrap Recycle (DSR) facility during a routine inspection. The hold-up weight was determined to be approximately 45 kgs U02 equivalent. This exceeds the established mass limit of 25 kgs U02. The second, independent control parameter on moderation remained intact, thus no unsafe condition existed.

Associated equipment has been shutdown and controls were reestablished within 4 hours.

SAFETY SIGNIFICANCE OF EVENT:
Low safety significance; independent controls on moderation remained intact.

POTENTIAL CRITICALITY PATHWAYS INVOLVE [BRIEF SCENARIO(S) OF HOW CRITICALITY COULD OCCUR]:
Multiple failure modes required before a criticality accident could occur. Simultaneous loss of moderation required.

CONTROLLED PARAMETER(S) (MASS, MODERATION, GEOMETRY. CONCENTRATION. ETC.):
Mass and moderation.

ESTIMATED AMOUNT, ENRICHMENT, FORM OF LICENSED MATERIAL (INCLUDE PROCESS LIMIT AND % WORST CASE CRITICAL MASS):
47 kgs U308 (~45 kgs U02 equivalent) at 4.1% U235 enrichment with maximum moisture content of 1,493 ppm H20. Mass limited to 25 kgs U02 at 5% U235 enrichment moderation limited to 50,000 ppm H20. At 50,000 ppm H20, the safe hemisphere mass of theoretical density U02 exceeds 600 kgs U02 at 5% U235 enrichment


NUCLEAR CRITICALITY SAFETY CONTROL(S) OR CONTROL SYSTEM(S) AND DESCRIPTION OF THE FAILURES OR DEFICIENCIES:
Administrative control on differential pressure across HEPA filter housing failed. Fuel business system computer controls limit feed material type to <50,000 ppm H2O equivalent. Moderation control remained intact.

CORRECTIVE ACTIONS TO RESTORE SAFETY SYSTEMS AND WHEN EACH WAS IMPLEMENTED:
1. Shutdown of DSR oxidation furnace/utility hood operation; begin nondestructive assay gamma monitoring of DSR HVAC.
2. Removal of prefilter & HEPA filter cartridge, shake U308 material down into safe geometry 3 gallon containers.
3. Investigation and implementation of corrective actions pending.

This event is reportable pursuant to NRC Bulletin 91-01 (within 24 hours) due to the mass control failure.

The licensee plans to notify state and local officials and NRC Region 2.

THREE SPRINKLER SYSTEMS DECLARED INOPERABLE DUE TO CORRODED HEADS (24-hour report) - (Refer the event #36018 and event #36605 for similar events at Portsmouth, and refer to event #36552 for a continuation of this event at Paducah.)

The following text is a portion of a facsimile received from Paducah:

"On 06/02/99 at 1630 CDT, the Plant Shift Superintendent (PSS) was notified that numerous sprinkler heads were corroded, affecting 16 sprinkler systems in C-337 and one system in C-333, such that the ability of the sprinklers to flow sufficient water was called into question. Subsequently, these sprinkler systems were declared inoperable, and TSR-required actions establishing roving fire patrols were initiated. This deficiency was detected during scheduled system inspections conducted by Fire Protection personnel. Currently, functionality of the sprinkler heads has not been fully evaluated by Fire Protection personnel, and the remaining cascade buildings are currently being inspected, and if necessary, this report will be updated to identify any additional areas. It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

The NRC resident inspector has been notified of this event by Paducah personnel.

* * * UPDATE AT 1022 EDT ON 06/04/99 FROM CAGE TO TROCINE * * *

The following text is a portion of a facsimile received from Paducah:

"Two sprinkler heads on system D-1 in C-337 and two sprinkler heads on system 27 in C-335 were identified to also be corroded. These were identified to the PSS on 06/03/99 at 1600 CDT and 1601 CDT, respectively, and determined to require an update to this report by the PSS. It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

Paducah personnel notified the NRC resident inspector of this update. The NRC operations officer notified the R3DO (Hills) and NMSS EO (Combs).

* * * UPDATE AT 2152 EDT ON 06/17/99 FROM WALKER TO POERTNER * * *

The following text is a portion of a facsimile received from Paducah:

"Three sprinkler heads on system C-15 and five sprinkler heads on system B-8 in C-333 were identified to also be corroded. The PSS was notified of this condition at 1300 CDT on 06/17/99 and determined that an update to this report was required. It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

Paducah personnel notified the NRC resident inspector of this update. The NRC operations officer notified the R3DO (Madera).

* * * UPDATE AT 1440 EDT ON 06/18/99 FROM UNDERWOOD TAKEN BY STRANSKY * * *

The following text is a portion of a facsimile received from Paducah:

"Two sprinkler heads on system C-15 and one sprinkler head on system B-8 in C-333 were identified to have corrosion. The PSS was notified of this condition at 1350 CDT on 06/18/99. The area of the fire patrol for system C-15 was expanded to include the two heads identified as corroded. The one head on system B-8 was in the area already being patrolled. The PSS determined that an update to this report was required."

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Madera).

* * * UPDATE AT 1315 EDT ON 06/25/1999 FROM WALKER TAKEN BY STRANSKY * * *

The following text is a portion of a facsimile received from Paducah:

"Two sprinkler heads on system D-8 and three sprinkler heads on system D-7 in C-337 were identified to have corrosion. The PSS was notified of the condition on system D-8 at 0125 CDT on 06/25/99 and at 1019 CDT on 06/25/99 for system D-7. Both systems were immediately declared inoperable and LCO fire patrol actions were implemented. It was determined that an update to this report was required."

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jordan).

* * * UPDATE AT 2119 EDT ON 07/30/99 FROM CAGE TAKEN BY STRANSKY * * *

The following text is a portion of a facsimile received from Paducah:

"Five sprinkler heads and one sprinkler piping tee on C-337 system D-7 were identified to have corrosion. The PSS was notified of these corroded system parts and declared the system inoperable at 0931 CDT on 07/30/99. LCO required fire patrols of the affected area were initiated. The PSS determined that an update to this event report was required."

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Wright).

* * * UPDATE AT 1655 EDT ON 07/31/99 FROM WHITE TAKEN BY STRANSKY * * *

The following text is a portion of a facsimile received from Paducah:

"Two sprinkler heads on C-337 System D-1 were identified to have corrosion. The PSS was notified of these corroded system parts and declared the system inoperable at 1155 CDT on 7/31/99. LCO required fire patrols of the affected area were initiated. The PSS determined that an update to this report was required."

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Wright).

* * * UPDATE AT 1546 EDT ON 08/10/99 FROM WHITE TAKEN BY STRANSKY * * *

The following text is a portion of a facsimile received from Paducah:

"Two sprinkler heads on C-337 system C-15 were identified to have corrosion. The PSS was notified of these corroded system parts and declared the system inoperable at 1130 CDT on 8/10/99. LCO required fire patrols of the affected area were initiated. The PSS determined that an update to this report was required."

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Burgess).

* * * UPDATE AT 1154 EDT ON 08/22/99 FROM WALKER TO POERTNER * * *

Four adjacent sprinkler heads on the C-333 building System B-1 were identified to have corrosion. The PSS was notified of the corroded system parts and declared the system inoperable at 0918 CDT on 08/22/99. LCO required fire patrols were initiated.

The NRC resident inspector will be notified by Paducah personnel. The NRC operations officer notified the R3DO (Clayton).

* * * UPDATE AT 2015 EDT ON 08/28/99 FROM W. F. GAGE TO S. SANDIN * * *

Two adjacent sprinkler heads on the C-337 building System D-11 were identified to have corrosion. The PSS was notified of these corroded system parts and declared the system inoperable at 1420 CDT on 08/28/99. LCO required fire patrols of the affected area were initiated.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (Leach) and NMSS EO (Piccone).

* * * UPDATE AT 2037 EDT ON 08/29/99 FROM KEVIN BEASLEY TO S. SANDIN * * *

Two adjacent sprinkler heads on the C-337 building System D-15 were identified to have corrosion and the PSS declared the system inoperable at 0925 CDT on 08/29/99. Also two adjacent heads on the C-337 building System D-10 were identified to have corrosion and the PSS declared the system inoperable at 1450 CDT. LCO required fire patrols for both of the affected areas were initiated in the time frame required by TSR.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (Leach) and NMSS EO (Piccone).

* * * UPDATE AT 0930 EDT ON 09/01/99 FROM ERIC WALKER TO FANGIE JONES * * *

Add two adjacent sprinkler heads on the C-337 building System D-14 were declared inoperable.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (David Hills) and NMSS EO (Robert Pierson).

* * * UPDATE AT 1133 EDT ON 09/08/99 FROM TOM WHITE TO FANGIE JONES * * *

Add two adjacent sprinkler heads on the C-331 building System 26 were declared inoperable at 2155 CDT on 09/07/99. An LCO required fire patrol for the affected area was initiated in the time frame required by the TSR.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (Monte Phillips) and NMSS EO (Josie Piccone).

* * * UPDATE AT 0948 ON 09/30/99 FROM ERIC WALKER TO DOUG WEAVER * * *

Add two adjacent sprinkler heads on the C-333 building System B-15 were identified to have corrosion and the PSS declared the system inoperable at 0815 CDT on 9/30/99. An LCO required fire patrol for the affected area was initiated in the time frame required by the TSR.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (Vegel) and NMSS EO (Cool).

* * * UPDATE AT 1600 ON 10/13/99 FROM WALKER TO GOULD * * *

Two adjacent sprinkler heads on the C-333 building System A-11 were identified to have corrosion and the PSS declared the system inoperable at 1307 CDT on 10/13/99. An LCO required fire patrol for the affected area was initiated in the time frame required by the TSR.

Paducah personnel informed the NRC resident inspector. The NRC operations officer notified the R3DO (Madera) and NMSS EO (Moore).

* * * UPDATE AT 1520 ON 10/19/99 FROM UNDERWOOD TAKEN BY STRANSKY * * *

Six sprinkler heads on the C-337 building System D-16 were identified to have corrosion and the PSS declared the system inoperable at 1052 CDT on 10/19/99. An LCO required fire patrol for the affected area was initiated in the time frame required by the TSR.

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jorgensen).

* * * UPDATE AT 2140 ON 10/19/99 FROM WALKER TAKEN BY STRANSKY * * *

Seven sprinkler heads on the C-337 building System A-7 were identified to have corrosion, and another four had been painted over. In addition, three adjacent sprinkler heads on the C-337 building System A-8 were identified to have corrosion. The PSS declared the systems inoperable at 1900 CDT on 10/19/99. An LCO required fire patrols for the affected areas were initiated in the time frame required by the TSR.

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Wright).

* * * UPDATE AT 1713 ON 10/21/99 FROM CAGE TAKEN BY JOLLIFFE * * *

Four sprinkler heads on the C-337 building System A-5, twelve sprinkler heads on the C-337 building System A-8, three sprinkler heads on the C-337 building System A-9, and six sprinkler heads on the C-337 building System B-8 were identified to have corrosion. On 10/21/99, the PSS declared Systems A-5 and A-9 inoperable at 1028 CDT, System A-8 inoperable at 1227 CDT and System B-8 inoperable at 1406 CDT. An LCO required fire patrol for the affected areas was initiated in the time frame required by the TSR.

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Bruce Jorgensen).

* * * UPDATE AT 2128 ON 10/22/99 FROM ERIC WALKER TAKEN BY JOLLIFFE * * *

At 1400 CDT on 10/22/99, the PSS was notified that numerous corroded sprinkler heads were discovered in the C-337 building on sprinkler systems B-1, B-3, B-5, B-6, B-7, B-11, and D-17. Due to the number of systems called into question, the PSS declared all of the sprinkler systems in C-337 on the cell floor (a total of 66 systems) inoperable and TSR required actions establishing roving fire patrols were initiated within the required time frame.

The NRC resident inspector has been informed of this update by Paducah personnel. The NRC operations officer notified the R3DO (Bruce Jorgensen).

* * * UPDATE AT 1239 ON 10/24/99 FROM TOM WHITE TAKEN BY JOLLIFFE * * *

At 1200 CDT on 10/23/99, the PSS was notified that numerous corroded sprinkler heads were discovered in the C-337 building on sprinkler systems B-13 and B-14 on the ground floor, The PSS declared these systems inoperable and TSR required actions establishing roving fire patrols were initiated within the required time frame. At 1600 CDT on 10/23/99, the PSS was notified that numerous corroded sprinkler heads were discovered in the C-337 building on sprinkler systems A-16, B-12, C-8, C-12, C-15, D-5, and D-8 on the cell floor, These systems have already been declared inoperable and fire patrols are already being performed.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Bruce Jorgensen).

* * * UPDATE AT 1117 ON 10/25/99 FROM W. F. CAGE TAKEN BY SANDIN * * *

At 1940 CDT on 10/24/99, the PSS was notified that numerous corroded sprinkler heads had been discovered on High Pressure Fire Water Systems C-4, C-5, C-6 and C-8, located in the C-337 building. These systems had previously been declared inoperable and fire patrols were already being performed at the time of discovery.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Lanksbury) and NMSS EO (Brain Smith).

* * * UPDATE AT 2235 ON 10/27/99 FROM WHITE TAKEN BY MACKINNON * * *

At 1517 CDT on 10/27/99, the PSS was notified that nine corroded sprinkler heads had been discovered on High Pressure Fire Water System A-12 located in the C-333 building. This system has been declared inoperable and fire patrols have been initiated.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jordan) and NMSS EO (Hickey).

* * * UPDATE AT 2150 ON 10/30/99 FROM UNDERWOOD TAKEN BY WEAVER * * *

At 1950 CDT on 10/30/99, the PSS was notified that numerous corroded sprinkler heads had been discovered on High Pressure Fire Water Systems A-5, A-9, A-11, C-5, and C-7 in the C-333 building. Reference ATR-1 1999-6699 and 6702. These systems have been declared inoperable and fire patrols have been initiated. Also, due to the number of inoperable sprinkler heads, the remaining systems on the cell floor of C-333 were called into question and declared inoperable. Fire patrols for the entire cell floor have been initialed. The PSS determined that an update to this report was required.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jordan) and NMSS EO (Hickey).

* * * UPDATE AT 2111 ON 10/31/99 FROM UNDERWOOD TAKEN BY WEAVER * * *

At 1412 CDT on 10/31/99, the PSS was notified that five corroded sprinkler heads had been discovered on High Pressure Fire Water System 9 in the C-335 building. There were two adjacent corroded heads discovered in two separate locations and a third individual head at a different location. The system was declared inoperable and fire patrols were initiated. The corroded heads have since been replaced and the system returned to operable status.

The NRC resident inspector was notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jordan) and NMSS EO (Hickey).

* * * UPDATE AT 2121 ON 11/01/99 FROM KEVIN BEASLEY TAKEN BY JOLLIFFE * * *

At 0930 CST on 11/01/99, the PSS was notified that three corroded sprinkler heads had been discovered on the High Pressure Fire Water System B-4 in the C-337 building. Two of these sprinkler heads are adjacent. Two adjacent corroded sprinkler heads were also discovered on the High Pressure Fire Water System B-5 in the C-337 building. These systems were declared inoperable and fire patrols were initiated. Work has been initiated to replace the corroded heads.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jim Creed).

* * * UPDATE AT 2143 ON 11/02/99 FROM KEVIN BEASLEY TAKEN BY JOLLIFFE * * *

At 1400 CST on 11/02/99, the PSS was notified that numerous corroded sprinkler heads had been discovered on High Pressure Fire Water Systems C-8 and D-7 in the C-333 building. These systems had been previously declared inoperable and fire patrols were being performed at the time of discovery. Work has been initiated to replace the corroded heads.

The NRC resident inspector has been notified of this update by Paducah personnel. The NRC operations officer notified the R3DO (Jim Creed).

* * * UPDATE AT 2110 EST ON 11/04/99 FROM ERIC WALKER TO S. SANDIN * * *

The following text is a portion of a facsimile received from Paducah:

"At 1700 [CST] on 11/04/99, the [PSS] was notified that numerous corroded sprinkler heads had been discovered on High Pressure Fire Water systems A-16, C-17, D-12, and D-16 in the C-333 building. These systems had been previously declared inoperable, and fire patrols were being performed at the time of discovery. Work his been initiated to replace the corroded heads. The PSS determined that an update to this report was required."

"It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

The NRC senior resident inspector has been notified of this event by Paducah personnel. The NRC operations officer notified the R3DO (Creed) and NMSS EO (Hodges).

* * * UPDATE AT 2328 EST ON 11/23/99 FROM WHITE TAKEN BY MACKINNON * * *

At 2240 CST on 11/22/99, the PSS was notified that numerous corroded sprinkler heads had been discovered on High Pressure Fire Water System B-7 and B-8 in the C-337 building. These systems were declared inoperable, and fire patrols were initiated at the time of discovery. The PSS determined that an update to this report was required.

The NRC resident inspector was notified of this update by the certificate holder. The R3DO (Ron Gardner) and NMSS EO (Joe Holonich) were notified by the NRC operations officer.

******************** UPDATE AT 1017 ON 11/24/99 FROM ERIC WALKER TO LEIGH TROCINE ********************

The following text is a portion of a facsimile received from Paducah:

"At 1045 [CST] on 11/23/99, the [PSS] was notified that more than five corroded sprinkler heads per system had been discovered on both High Pressure Fire Water systems B-3 and 8-4 in the C-337 building. Per the Authority Having Jurisdiction (AHJ), the discovery of five or more heads on one system renders the system inoperable. These systems were declared inoperable, and actions were taken as required by the TSR. The PSS determined that an update to this report was required."

"It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

Paducah personnel notified the NRC resident inspector. The R3DO (Gardner) and NMSS EO (Hickey) were notified by the NRC operations officer.

***************** UPDATE AT 2147 ON 12/08/99 FROM MIKE UNDERWOOD TO LEIGH TROCINE ****************

The following text is a portion of a facsimile received from Paducah:

"At 1000 [CST] on 12/08/99, the [PSS] was notified that five corroded sprinkler heads had been discovered on High Pressure Fire Water system B-1 in the C-337 building. Two heads are at column Y-X/4, two heads at column Wb-4, and one head at column Wa-4 on the ground floor. Per the Authority Having Jurisdiction (AHJ), the discovery of five or more heads on the system renders the system inoperable. The system was declared inoperable, and actions were taken by the TSR. The PSS determined that an update to this required."

"It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed."

Paducah personnel notified the NRC resident inspector. The R3DO (Hiland) and NMSS EO (Sherr) were notified by the NRC operations officer.

* * * UPDATE AT 2315 ON 12/09/99 FROM TOM WHITE TAKEN BY JOLLIFFE * * *

At 1405 CST on 12/09/99, the PSS was notified that twelve (12) corroded sprinkler heads had been discovered on High Pressure Fire Water System #B-1 in the C-337 building. Two heads are at column X-6, three heads at column Wb-3, four heads at column Wa-5, one head at column Wb-8, one head at column X-6, and one head at column W4, all on the ground floor. Per the Authority Having Jurisdiction, the discovery of five or more heads on one system renders the system inoperable and three locations have two adjacent heads corroded and this renders the system inoperable as well. The system was declared inoperable and actions were taken as required by the technical safety requirement. The PSS determined that an update to this report was required.

The NRC Resident inspector has been notified of this event.

The NRC Operations Officer notified the R3DO Pat Hiland.

* * * UPDATE AT 1054 ON 12/11/99 FROM FRANK CAGE TAKEN BY MACKINNON * * *

At 0135 CT on 12/11/99, the Plant Shift Superintendent (PSS) was notified that during maintenance activities to repair corroded heads on C-337 High Pressure Fire Water System B-15, two additional adjacent corroded sprinkler heads had been discovered. The system had been declared inoperable and actions were being taken as required by the TSR when the additional corroded heads were discovered. The PSS determined that an update to this report was required.

The NRC Resident Inspector has been notified of this event.

The NRC Operations Officer notified the R3DO Pat Hiland and NMSS EO (Sherr)

* * * UPDATE ON 12/28/99 @ 2122 FROM BEASLEY TO GOULD * * *

At 1330 on 12/28/99. the Plant Shift Superintendent (PSS) was notified that during walk downs of the High Pressure Fire Water (HPFW) system in C-337, corroded sprinkler heads had been discovered on HPFW systems B-5 and B-7. Four adjacent corroded heads were found on system B-5, and a total of five corroded sprinkler heads were found on system B-7. The affected systems were declared inoperable and actions were taken as required by the TSR. The PSS determined that an update to this event report is required.

It has been determined that this event is reportable under 10CFR76.120(c)(2) as an event in which equipment is disabled or fails to function as designed.

The NRC Resident Inspector has been notified of this event.

The Reg 3 RDO (Burgess) and NMSS EO (Hickey) were notified.

NOTE: THIS EVENT IS CONTINUED IN EVENT #36552.