Event Notification Report for August 11, 2000
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
08/10/2000 - 08/11/2000
** EVENT NUMBERS **
37212 37219 37220
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|Power Reactor |Event Number: 37212 |
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| FACILITY: PEACH BOTTOM REGION: 1 |NOTIFICATION DATE: 08/08/2000|
| UNIT: [] [3] [] STATE: PA |NOTIFICATION TIME: 01:24[EDT]|
| RXTYPE: [2] GE-4,[3] GE-4 |EVENT DATE: 08/07/2000|
+------------------------------------------------+EVENT TIME: 21:26[EDT]|
| NRC NOTIFIED BY: WINGFIELD |LAST UPDATE DATE: 08/10/2000|
| HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |LAWRENCE DOERFLEIN R1 |
|10 CFR SECTION: | |
|ARPS 50.72(b)(2)(ii) RPS ACTUATION | |
|AESF 50.72(b)(2)(ii) ESF ACTUATION | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|3 A/R Y 100 Power Operation |0 Hot Shutdown |
| | |
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EVENT TEXT
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| AUTO REACTOR SCRAM FROM 100% POWER ON A FALSE LOW REACTOR WATER LEVEL |
| INDICATION |
| |
| Unit 3 experienced an automatic reactor scram when an instrument line "root" |
| valve failed causing a water leak which resulted in a false low reactor |
| water level signal indication sensed by the reactor protection system. The |
| water leak was immediately isolated by the engineered safety features |
| actuation of the excess flow check valve in the same reactor instrumentation |
| line. All control rods fully inserted, no emergency core cooling system |
| injection occurred, no relief valves lifted and all safety systems responded |
| correctly. Unit 3 also had an actuation of the primary containment |
| isolation system following the reactor scram. |
| |
| The NRC Resident Inspector will be notified by the licensee. |
| |
| * * * UPDATE AT 1230 ON 08/10/00 BY STEVE BECK TO JOLLIFFE * * * |
| |
| The following additional information regarding this event is provided by the |
| licensee: |
| |
| During scram recovery, due to a false low reactor water level signal, the |
| reactor building ventilation system could not be reset and placed in |
| service. Reactor building temperatures increased to the alarm setpoint and |
| the crew entered the Secondary Containment Control Emergency Operating |
| Procedure (EOP). The EOP directed the crew to restore ventilation via a |
| supplemental procedure which directed overriding the false low reactor water |
| level signal using jumpers. The crew installed the jumpers and restored the |
| normal ventilation system and reactor building temperatures returned to |
| normal. With the jumpers installed, the high drywell pressure and low |
| reactor water level initiation signals to the Standby Gas Treatment (SBGT) |
| System were overridden. Inhibiting the SBGT System initiation signals is |
| reportable per 10CFR50.72(b)(2)(iii)(C) and 10CFR50.73(a)(2)(v). |
| |
| All systems have since been restored to normal status. |
| |
| The licensee notified the NRC Resident Inspector. The NRC Operations |
| Officer notified the R1DO John Rogge. |
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|Fuel Cycle Facility |Event Number: 37219 |
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| FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 08/10/2000|
| RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 01:55[EDT]|
| COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 08/09/2000|
| 6903 ROCKLEDGE DRIVE |EVENT TIME: 15:20[EDT]|
| BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 08/10/2000|
| CITY: PIKETON REGION: 3 +-----------------------------+
| COUNTY: PIKE STATE: OH |PERSON ORGANIZATION |
|LICENSE#: GDP-2 AGREEMENT: N |RONALD GARDNER R3 |
| DOCKET: 0707002 |C.W. (BILL) REAMER NMSS |
+------------------------------------------------+FRANK CONGEL IRO |
| NRC NOTIFIED BY: ERIC SPAETH | |
| HQ OPS OFFICER: DOUG WEAVER | |
+------------------------------------------------+ |
|EMERGENCY CLASS: N/A | |
|10 CFR SECTION: | |
|NBNL RESPONSE-BULLETIN | |
| | |
| | |
| | |
| | |
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EVENT TEXT
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| BULLETIN 91-01 24 HOUR REPORT |
| |
| At 1520 hours on 8/9/00, it was discovered that a Nuclear Criticality Safety |
| Approval (NCSA) non-compliance had occurred in the X-705 decontamination |
| facility. During a routine walk-through by the NRC Resident Inspector, two |
| (2) violations of the X-705 Inadvertent Containers NCSA, NCSA-0705_076, were |
| noted. The conditions noted were as a follows: |
| |
| - An open plastic bag containing used personal protective clothing (PPE) was |
| discovered lying in the Tunnel Basement. |
| - A shelving unit, adjacent to the Microfiltration system was found to |
| contain cardboard boxes, loosely wrapped in plastic. |
| |
| Both of these areas are covered by the controls of NCSA-0705_076. It was |
| determined that these arrays had the potential to collect an unsafe |
| configuration of Uranium-bearing material. |
| |
| This event resulted in the loss of one control (geometry/volume) of the |
| double contingency control principle. The physical integrity of all nearby |
| systems containing uranium-bearing material was maintained throughout this |
| event. |
| |
| NCSA-0705_076 compliance was restored at 1620 hours when the on duty NCS |
| engineer authorized the removal of these items from there respective areas. |
| |
| The licensee informed the NRC resident inspector that this report would be |
| made. |
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|Other Nuclear Material |Event Number: 37220 |
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| REP ORG: COGEMA MINING, INC. |NOTIFICATION DATE: 08/10/2000|
|LICENSEE: COGEMA MINING, INC. |NOTIFICATION TIME: 10:13[EDT]|
| CITY: LINCH REGION: 4 |EVENT DATE: 08/09/2000|
| COUNTY: JOHNSON STATE: WY |EVENT TIME: 13:00[MDT]|
|LICENSE#: SUA-1341 AGREEMENT: N |LAST UPDATE DATE: 08/10/2000|
| DOCKET: |+----------------------------+
| |PERSON ORGANIZATION |
| |KRISS KENNEDY R4 |
| |C.W. (BILL) REAMER NMSS |
+------------------------------------------------+MIKE LAYTON NMSS |
| NRC NOTIFIED BY: JOHN VASELIN | |
| HQ OPS OFFICER: DOUG WEAVER | |
+------------------------------------------------+ |
|EMERGENCY CLASS: N/A | |
|10 CFR SECTION: | |
|NLTR LICENSEE 24 HR REPORT | |
| | |
| | |
| | |
| | |
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EVENT TEXT
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| MONITOR WELL ON EXCURSION STATUS |
| |
| A routine quarterly (every 3 months) water sample collected on August 7, |
| 2000, from monitor well M2, exceeded 2 of its 3 upper control limits (UCLs). |
| A confirmation sample was collected August 9, which also exceeded 2 UCLs. |
| Monitor well M2 was then placed on excursion status per license section 11.2 |
| and its sampling frequency increased to weekly. Monitor well M2 is a |
| perimeter ore zone monitor well located approximately 300 feet east of the |
| restored Production Unit 2 boundary, at the Irigaray Mine, Johnson County |
| Wyoming. The nearest community is Linch, Wyoming, approximately 23 miles to |
| the southeast. |
| |
| Date Chlorides Conductivity |
| Alkalinity Uranium |
| Sampled (mg/I) (umhos/cm2) |
| (mg/I) (mg/I U-308) |
| (UCL 18.0) (UCL 685) (UCL 131.1) |
| (no UCL) |
| 08-07-00 18.2 733 |
| 105.5 <0.4 |
| 08-09-00 19.0 779 |
| 98.8 <0.4 |
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Page Last Reviewed/Updated Wednesday, March 24, 2021