05000317/LER-2005-002, Regarding Reactor Scram Due to Main Turbine Vibrations During Power Reduction
| ML051260229 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  (DPR-053) |
| Issue date: | 05/02/2005 |
| From: | Holm D Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 05-002-00 | |
| Download: ML051260229 (5) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 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)(viii)(B) 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)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 3172005002R00 - NRC Website | |
text
Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 Constellation Energy Group May 2, 2005 U.S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
SUBJECT:
Document Control Desk Calvert Cliffs Nuclear Power Plant Unit No. 1; Docket No. 50-317; License No. DPR 53 Licensee Event Report 2005-002 Reactor Scram Due to Main Turbine Vibrations During Power Reduction The attached report is being sent to you as required by 10 CFR 50.73.
Should you have questions regarding this report, please contact Mr. L. S. Larragoite at (410) 495-4922.
Very truly yours, David A. Holm Plant General Manager DAH/ALS/bjd
Attachment:
As stated cc:
R. V. Guzman, NRC S. J. Collins, NRC Resident Inspector, NRC R. l. McLean, DNR
"-- r- 2 -Z'
(5-
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06130/2007
.6-204)
Estimated burden per response to comply with this mandatory collection request 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br />. Reported lessons learned are incorporated Into the licensing process and fed back to Industry. Send comments regarding burden estimate to the Records and FOIA/Privacy Service Branch (T-5 F52), U.S.
LICENSEE EVENT REPORT (LER)
Nuclear Regulatory Commission, Washington, DC 20555-0001, or by Internet e-mail to infooollects@>nrc gov. and to the Desk Officer, Office of Information and RegulatoryAffair DNEB10202. (3150.0104), Office of Management and Budget. Washington. DC 20503. If a means used to Impose an information (See reverse for required number of collectiondoesnotdisplay acurrentlyvalidOMBcontrolnumber.theNRCmay digits/characters for each block) not or sponsor, and a person Is not required to respond to, the
- 3. PAGE Calvert Cliffs Nuclear Power Plant, Unit 1 05000 317 1 OF 004
- 4. TITLE Reactor Scram Due to Main Turbine Vibrations During Power Reduction
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED SEUNTA RVFACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH DAY YEAR 05000 FACILITY NAME DOCKET NUMBER 03 01 2005 2005 - 002 -
00 05 02 2005 05000
- 9. OPERATING MODE
- 1. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check all that apply) o 20.2201(b) 0 20.2203(a)(3)(i)
El 50.73(a)(2)(i)(C)
El 50.73(a)(2)(vii) 1 0 20.2201(d)
E 20.2203(a)(3)(ii) 03 50.73(a)(2)(ii)(A)
El 50.73(a)(2)(viii)(A)
El 20.2203(a)(1) 0 20.2203(a)(4)
El 50.73(a)(2)(ii)(B)
El 50.73(a)(2)(viii)(B)
El 20.2203(a)(2)(i)
D 50.36(c)(1)(i)(A)
El 50.73(a)(2)(iii)
El 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL C] 20.2203(a)(2)(ii) 0 50.36(c)(1)(ii)(A) 0 50.73(a)(2)(iv)(A)
E 50.73(a)(2)(x)
El 20.2203(a)(2)(iii) 0 50.36(c)(2)
El 50.73(a)(2)(v)(A)
D 73.71(a)(4)
El 20.2203(a)(2)(iv) 0 50.46(a)(3)(ii) 0 50.73(a)(2)(v)(B)
El 73.71(a)(5) 015 0 20.2203(a)(2)(v) 0 50.73(a)(2)(i)(A)
El 50.73(a)(2)(v)(C)
El OTHER o 20.2203(a)(2)(vi)
El 50.73(a)(2)(i)(B) 0 50.73(a)(2)(v)(D)
Specify In Abstract below 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 NRC Form 366A)
V.
ADDITIONAL INFORMATION
A.
Component Identification IEEE 803 EIIS Function Component Main Turbine IEEE 805 System ID TA TRB i
B.
Previous Occurrences
A review of Calvert Cliffs' events over the past several years was performed. No previous occurrences were identified involving a reactor scram due to high main turbine vibrations caused by rotor bowing.