05000390/LER-2005-001, Regarding Two Trains of ABGTS Inoperable
| ML051330257 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 05/10/2005 |
| From: | Lagergren W Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 05-001-00 | |
| Download: ML051330257 (8) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 3902005001R00 - NRC Website | |
text
Tennessee Valley Authority, Post Office Box 2000, Spring City. Tennessee 37381-2000 William R. Lagergren, Jr.
Site Vice President, Watts Bar Nuclear Plant MAY 10 2005 10 CFR 50.73 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Gentlemen:
In the Matter of Tennessee Valley Authority
)
Docket No. 50-390 WATTS BAR NUCLEAR PLANT (WBN) - UNIT I - FACILITY OPERATING LICENSE NPF LICENSEE EVENT REPORT (LER) 50-390/2005-001 This submittal provides LER 390/2005-001. This LER addresses an event that occurred on March 11, 2005, where both trains of the Auxiliary Building Gas Treatment System (ABGTS) were inoperable. This event is being reported under 10 CFR 50.73(a)(2)(v)(C) and 10 CFR 50.73(a)(2)(v)(D).
There are no regulatory commitments associated with this letter. Should there be questions regarding this submittal, please contact Paul L. Pace at (423) 365-1824.
Sincerely, W. R. Lagergren '
Enclosure:
LER 390/2005-001 cc: See page 2 P-twd 0-cycud Pm
U.S. Nuclear Regulatory Commission Page 2 MAY 1 0 2005 cc (Enclosure):
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Project Manager U.S. Nuclear Regulatory Commission MS 08G9 One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 Institute of Nuclear Power Operations 700 Galleria Parkway, NW Atlanta, Georgia 30339-5957
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06/3012007 (6-2004)
, the NRC (See reverse for required number of may not conduct or sponsor, and a person Is not required to respond to, the digitslcharacters for each block)
Information collection.
- 3. PAGE Watts Bar Nuclear Plant 05000 1 OF 6
- 4. TITLE Two Trains of ABGTS Inoperable
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR S
EQUENTIAL REV MONTH DAY YEAR U B R N.05 000 I IFACILITY NAME DOCKET NUMBER 03 11 2005 2005 001 0
05 10 2005 05000
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Checkall that apply) o 20.2201(b) a 20.2203(a)(3)(i) 0J50.73(a)(2)(i)(C)
Q 50.73(a)(2)(vii)
Defueled D 20.2201(d) a 20.2203(a)(3)(ii)
D 50.73(a)(2)(ii)(A)
C 50.73(a)(2)(viii)(A) o 20.2203(a)(1) 5 20.2203(a)(4)
D 50.73(a)(2)(ii)(B) 50.73(a)(2)(Viii)(B) 20.2203(a)(2)(i)
D 50.36(c)(1)(i)(A) 5 50.73(a)(2)(iii)
C 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL D 20.2203(a)(2)(ii) 5 50.36(c)(1)(ii)(A)
D 50.73(a)(2)(iv)(A)
D 50.73(a)(2)(x)
D 20.2203(a)(2)(iii)
D 50.36(c)(2) 5 50.73(a)(2)(v)(A) 5 73.71(a)(4) o 20.2203(a)(2)(iv) 5 50.46(a)(3)(ii) 5 50.73(a)(2)(v)(B)
C 73.71(a)(5) 0%
20.2203(a)(2)(v) 5 50.73(a)(2)(i)(A)
E 50.73(a)(2)(v)(C) 5 OTHER O 20.2203(a)(2)(vi) 5 50.73(a)(2)(i)(B)
E 50.73(a)(2)(v)(D)
SpecifyinAbstractbelow or in (If more space Is required, use additional copies of (If more space Is required, use additional copies of (if more space Is required, use additional copies of (if more space Is required, use additional copies of (Ifmore space Is required, use additional copies of NRC Form 366A) (17)
V. 2.
SO 1-30.02, 'Containment Purge System," was revised to:
a.
Clarify the System Description requirements apply whenever irradiated fuel is being moved.
b.
Place references to the System Description requirements in each of the sub-sections for Section 5.0, 'Startup."
VL.
ADDITIONAL INFORMATION
A.
Failed Components There were no failed components involved in this LER.
B.
Previous LERs on Similar Events The following is a listing of the LERs which have been initiated for Watts Bar where both trains of the ABGTS were inoperable:
ER
Cause of Event
Num ber
- 1.
390/1997-04 Lack of a questioning attitude by Operations personnel for test data taken during a 10 hour1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> surveillance test run.
- 2.
390/2003-05 Inattention and inadequate communication by a shift test director responsible for directing alignment activities associated with test prerequisites.
C.
Additional Information
None.
D.
Safety System Functional Failure This event is considered a safety system functional failure of ABGTS in accordance with Nuclear Energy Institute (NEI) 99-02, Revision 3, since the system was rendered incapable of automatically performing its safety function as designed.
E.
Loss of Normal Heat Removal Consideration This event is not considered a scram with loss of normal heat removal.
VII. COMMITMENTS
None