05000397/LER-2009-001, Re Reactor Scram Due to Turbine Control System Trip Header Depressurization

Re Reactor Scram Due to Turbine Control System Trip Header Depressurization

ML091110297
Person / Time
Site:	Columbia
Issue date:	04/09/2009
From:	Gambhir S Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GO2-09-065 LER 09-001-00
Download: ML091110297 (5)

LER-2009-001, Re Reactor Scram Due to Turbine Control System Trip Header Depressurization

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(iv)(A), System Actuation 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)(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
3972009001R00 - NRC Website

text

ENERGY NORTHWEST Sudesh K. Gambhir Vice President, Technical Services P.O. Box 968, Mail Drop PE04 Richland, WA 99352-0968 Ph. 509-377-8313 F. 509-377-2354 sgambhir@energy-northwest.com April 9, 2009 G02-09-065 10 CFR 50.73 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 LICENSEE EVENT REPORT NO. 2009-001-00

Dear Sir or Madam:

Transmitted herewith is Licensee Event Report No. 2009-001-00 for Columbia Generating Station.- This report is submitted pursuant to 10 CFR 50.73(a)(2)(iv)(A). The enclosed report discusses itemsof reportability and corrective actions taken related to a Reactor Protection System Turbine Govemor Valve Fast Closure scram that occurred on February 8, 2009.-,

There are no commitments being made to the NRC by this letter. If you have any questions or require additional information, please contact Mr. MC Humphreys at (509) 377-4025.

ectfully, S Gambhir Vice President, Technical Services

Enclosure:

Licensee Event Report 2009-001-00 cc: EE Collins, Jr. - NRC RIV CF Lyn -NRC NRR INPO Records Center NRC Sr. Resident Inspector -988C (2)

RN Sherman - BPA/1399 WA Horn - Winston & Strawn WC Walker - NRC RIV/fax

- A--

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150-0104 EXPIRES 08131/2010 (9-2007)

, the NRC may digits/characters for each block) not conduct or sponsor, and a person is not required to respond to, the information collection.

3. PAGE Columbia Generating Station 05000397 1 0F74

4. TITLE Reactor Scram due to Turbine Control System Trip Header Depressurization

5. EVENT DATE

6. LER NUMBER

7. REPORT DATE

8. OTHER FACILITIES INVOLVED M

SEQUENTIAL REV MONTH DAY YEAR FACILITY NAME DOCKET NUMBER MONTH___

j A.

NUMBER NO.

05000 02 08 2009 2009- 001 - 00 04 09 2009 FACILITY NAME DOCKET NUMBER 05000

9. OPERATING MODE

11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply) 1 l 20.2201(b) 0l 20.2203(a)(3)(i)

El 50.73(a)(2)(i)(C) 0l 50.73(a)(2)(vii)

[] 20.2201(d)

El 20.2203(a)(3)(ii)

El 50.73(a)(2)(ii)(A)

[E 50.73(a)(2)(viii)(A)

El 20.2203 (a)(1)

El 20.2203(a)(4)

El 50.73(a)(2)(ii)(B)

El 50.73(a)(2)(viii)(B)

El 20.2203(a)(2)(i)

C3 50.36(c)(1)(i)(A)

El 50.73(a)(2)(iii)

[I 50.73(a)(2)(ix)(A)

10. POWER LEVEL El 20.2203(a)(2)(ii)

C3 50.36(c)(1)(ii)(A) 0 50.73(a)(2)(iv)(A)

El 50.73(a)(2)(x) 075 Cl 20.2203(a)(2)(iii)

Cl 50.36(c)(2) 0l 50.73(a)(2)(v)(A)

El 73.71(a)(4)

[I 20.2203(a)(2)(iv)

C3 50.46(a)(3)(ii)

Cl 50.73(a)(2)(v)(B)

El 73.71(a)(5) 0l 20.2203(a)(2)(v)

[I 50.73(a)(2)(i)(A)

[I 50.73(a)(2)(v)(C) 0l OTHER El 20.2203(a)(2)(vi)

El 50.73(a)(2)(i)(B)

El 50.73(a)(2)(v)(D)

Specify in Abstract below or in.

26158 R4