Event Notification Report for August 18, 1999
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
08/17/1999 - 08/18/1999
** EVENT NUMBERS **
36017
!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!!
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|Power Reactor |Event Number: 36017 |
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| FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 08/11/1999|
| UNIT: [] [2] [] STATE: CT |NOTIFICATION TIME: 14:08[EDT]|
| RXTYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 08/11/1999|
+------------------------------------------------+EVENT TIME: 13:53[EDT]|
| NRC NOTIFIED BY: KEN TRUESDALE |LAST UPDATE DATE: 08/17/1999|
| HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |HAROLD GRAY R1 |
|10 CFR SECTION: | |
|ADEG 50.72(b)(1)(ii) DEGRAD COND DURING OP | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|2 N Y 100 Power Operation |100 Power Operation |
| | |
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EVENT TEXT
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| DISCOVERY OF A HISTORICAL CONDITION INVOLVING LOW DIESEL GENERATOR VOLTAGE |
| |
| The licensee determined that voltage for the 'B' emergency diesel generator |
| would not have met the technical specification criteria, and this rendered |
| the 'B' emergency diesel generator inoperable approximately 32 days prior to |
| 08/05/99. Although the voltage was discovered to be low during a test run |
| of the 'B' emergency diesel generator on 08/05/99, it was thought to be |
| acceptable (satisfactory) at the time of the test run. However, subsequent |
| engineering review determined that the voltage was in fact below the |
| technical specification (TS) acceptance criteria. |
| |
| The licensee determined this event to be reportable at 1353 on 08/11/99. |
| |
| The licensee notified the NRC resident inspector. |
| |
| ******************** UPDATE AT 1435 ON 08/17/99 FROM STEPHEN BAKER TO |
| TROCINE ******************** |
| |
| The following text is a portion of a facsimile received from the licensee: |
| |
| "Condition Report M2-99-2179[, 'B' Emergency Diesel Generator Slow Start Did |
| Not Meet TS Acceptance Criteria,'] was written when it was identified that |
| the output voltage for the "B" emergency diesel generator (EDG) did not meet |
| the TS acceptance criteria, potentially rendering the diesel inoperable." |
| |
| "The original reportability determination for this condition concluded that |
| this condition was reportable under 10CFR 50.73(a)(2)(i), Technical |
| Specifications, and 10CFR50.72(b)(1)(ii), Outside Design Basis, based upon |
| initial investigation of the deficiency. Accordingly, a prompt report was |
| issued on 08/11/99 per |
| 10CFR50.72(b)(1)(ii)." |
| |
| "Upon further investigation of this condition it was determined that while |
| the voltage requirements of the applicable surveillance procedure were not |
| met, the requirements of [TS] Surveillance Requirement 4.8.1.1.2.a.2 were |
| met. Additionally, it was discovered that the output voltage was set |
| sufficiently high during the previous month's surveillance such that the EDG |
| would have loaded properly and performed its required safety function(s) |
| during the period in question." |
| |
| "Therefore, this condition is NOT reportable under the requirements of |
| 10CFR50.73(5)(2)(i), Technical Specifications, or 10CFR50.72(b)(1)(ii), |
| Outside Design Basis, and it is recommended that the associated prompt |
| report be retracted." |
| |
| "Based on the above discussion, this is not a condition which is adverse to |
| safety. This deficiency was reviewed against the requirements of |
| 10CFR50.72, 10CFR50.73, [and] 10CFR50.9(b), and [it was] determined to be |
| not reportable." |
| |
| The licensee notified the NRC resident inspector. The NRC operations |
| officer notified the R1DO (Eselgroth). |
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