05000338/LER-2010-005, For North Anna Power Station, Regarding Unanalyzed Scaffolding Renders Changing Pump Inoperable Due to Human Error

For North Anna Power Station, Regarding Unanalyzed Scaffolding Renders Changing Pump Inoperable Due to Human Error

ML110400112
Person / Time
Site:	North Anna
Issue date:	02/03/2011
From:	Lane N Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
11-012 LER 10-005-00
Download: ML110400112 (4)

LER-2010-005, For North Anna Power Station, Regarding Unanalyzed Scaffolding Renders Changing Pump Inoperable Due to Human Error

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)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(v), Loss of Safety Function
LER closed by
IR 05000338/2011003 (28 July 2011)
3382010005R00 - NRC Website

text

1 0CFR50.73 Virginia Electric and Power Company North Anna Power Station P. 0. Box 402 Mineral, Virginia 23117 February 3, 2011 Attention: Document Control Desk Serial No.:

11-012 U. S. Nuclear Regulatory Commission NAPS:

RAP Washington, DC 20555-0001 Docket No.: 50-338 License No.: NPF-4

Dear Sirs:

Pursuant to 10CFR50.73, Virginia Electric and Power Company hereby submit the following Licensee Event Report applicable to North Anna Power Station Unit 1.

Report No. 50-338/2010-005-00 This report has been reviewed by the Facility Safety Review Committee and will be forwarded to the Management Safety Review Committee for its review.

Sincerely, N. Larry Lane Site Vice President North Anna Power Station Enclosure Commitments contained in this letter: None cc:

United States Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, Georgia 30303-1257 NRC Senior Resident Inspector North Anna Power Station

4.

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO, 3150-0104 EXPIRES: 10/31/2013 (10-2010)

, 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 NORTH ANNA POWER STATION, UNIT 1 05000 338 1 OF 3

4. TITLE Unanalyzed Scaffolding Renders Charging Pump Inoperable Due to Human Error

5. EVENT DATE f.1

6. LER NUMBER

7. REPORT DATE

8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH DAY YEAR FACILITY NAME DOCUMENT NUMBER NUMBER NO.

05000 12 12 2010 2010

-- 005--

00 02 03 2011 FACILITY NAME DOCUMENT NUMBER 05000

9. OPERATING MODE

11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)

FZ 20.2201(b)

El 20.2203(a)(3)(i)

F1 50.73(a)(2)(i)(C) 0 50.73(a)(2)(vii) 0[]

20.2201(d)

El 20.2203(a)(3)(ii)

[

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

E] 50.73(a)(2)(viii)(A) 1 [E

20.2203(a)(1)

[i 20.2203(a)(4)

L 50.73(a)(2)(ii)(B) 50.73(a)(2)(viii)(B)

[__]

20.2203(a)(2)(i)

E] 50.36(c)(1)(i)(A) 50.73(a)(2)(iii)

H 50.73(a)(2)(ix)(A)

10. POWER LEVEL I]

20.2203(a)(2)(ii)

[] 50.36(c)(1)(ii)(A)

E]

50.73(a)(2)(iv)(A)

[]

50.73(a)(2)(x)

[]

20,2203(a)(2)(iii)

[]

50.36(c)(2)

[]

50.73(a)(2)(v)(A)

[]

73.71(a)(4)

El 20.2203(a)(2)(iv)

[E 50.46(a)(3)(ii)

LI 50.73(a)(2)(v)(B)

LI 73.71(a)(5)

El 20.2203(a)(2)(v)

El 50.73(a)(2)(i)(A)

[]

50,73(a)(2)(v)(C)

[]

OTHER 100%

El 20.2203(a)(2)(vi)

[l 50.73(a)(2)(i)(B)

[J 50.73(a)(2)(v)(D)

Specify in Abstract below or in 4.0 IMMEDIATE CORRECTIVE ACTION(S)

The Technical Specification action was entered at the time the scaffolding was discovered in the Unit 1 "A" Charging Pump cubicle. The pump was placed in PULL-TO-LOCK with the Unit 1 "C" Charging Pump, powered by the "H" Emergency Bus, in service at the time and the associated actions were cleared. The scaffolding was removed from the pump cubicle and then the pump was returned to AUTO.

5.0 ADDITIONAL CORRECTIVE ACTIONS

The Scaffolding Order will be removed from a scaffold at the time of dismantling and shall be "in hand" when updating the status of that scaffold in the scaffold tracking program. Non-supervisory personnel will be required to obtain a second verification prior to updating scaffolding status. These process enhancements have been implemented.

The scaffold tracking function using electronic Scaffold Orders with electronic approvals and signatures will be fully implemented. The use of hard copy Scaffold Orders will be discontinued. This item will be tracked to completion via the Corrective Action System.

6.0 ACTIONS TO PREVENT RECURRENCE The actions noted above are sufficient to preclude recurrence.

7.0

SIMILAR EVENTS

None.

8.0 ADDITIONAL INFORMATION

Unit 2 was in Mode 1,100 percent power, at the time of this event and was not affected.