05000336/LER-2016-001, Turbine Driven Auxiliary Feedwater Pump Room HELB Door Left Open
| ML16187A324 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 06/27/2016 |
| From: | Daugherty J Dominion, Dominion Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 16-001-00 | |
| Download: ML16187A324 (6) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 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)(v), Loss of Safety Function 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)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i) |
| 3362016001R00 - NRC Website | |
text
Dominion Nuclear Connecticut, Inc.
Rope Ferry Rd., Waterford, CT 06385 Mailing Address: P.O. Box 128 Waterford, CT 06385 dam.com U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNIT 2 LICENSEE EVENT REPORT 2016-001-00 TURBINE DRIVEN AUXILIARY FEEDWATER PUMP ROOM HELB DOOR LEFT OPEN
- ')
!;J' ' Dominion JUN 2 7 2016 Serial No.
MPS Lic/GJC Docket No.
License No.16-243 RO 50-336 DPR-65 This letter forwards Licensee Event Report (LER) 2016-001-00 documenting a condition discovered at Millstone Power Station Unit 2, on April 27, 2016.
This LER is being submitted pursuant to 10 CFR 50. 73(a)(2)(v) as any event or condition that alone could have prevented the fulfillment of the safety function of structures or systems that are needed to: (8) Remove residual heat; and (D) Mitigate the consequences of an accident.
If you have any questions or require additional information, please contact Mr. Thomas G. Cleary at (860) 444-4377.
Sincerely, Jo~~
Site Vice President - Millstone Attachments: 1 Commitments made in this letter: None
cc:
U.S. Nuclear Regulatory Commission Region I 2100 Renaissance Blvd.
Suite 100 King of Prussia, PA 19406-2713 R.V. Guzman Serial No.16-243 Docket No. 50-336 Licensee Event Report 2016-001-00 Page 2 of 2 NRC Senior Project Manager Millstone Units 2 and 3 U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 08 C-2 Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station
ATTACHMENT Serial No.16-243 Docket No. 50-336 Licensee Event Report 2016-001-00 LICENSEE EVENT REPORT 2016-001-00 TURBINE DRIVEN AUXILIARY FEEDWATER PUMP ROOM HELB DOOR LEFT OPEN MILLSTONE POWER STATION UNIT 2 DOMINION NUCLEAR CONNECTICUT, INC.
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018 (11-2015)
, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- ri
- 3. PAGE I
Millstone Power Station Unit 2 I
05000336 1 of 3
' I
- 4. TITLE I
Turbine Driven Auxiliary Feedwater Puinp Room H~LB Door Left Open
- 5. EVENT DATE
- 6. LER NUMBER I
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED
~
I SEQUENTIAL I REV
~ONTH FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR DAY YEAR NUMBER NO.
I 05000 I
FACILITY NAME DOCKET NUMBER 04 27 2016 2016 -
001 -
00
. 06 27 2016 05000
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)
D 20.2201(b)
D 20.2203(a)(3)(i)
D 50.73(a)(2)(ii)(A)
D 50.73(a)(2)(viii)(A) 1 D 20.2201(d)
D 20.2203(a)(3)(ii)
D 50.73(a)(2)(ii)(B)
D 50.73(a)(2)(viii)(B)
D 20.2203(a)(1) o 20.2203(a)(4)
D 50.73(a)(2)(iii)
D 50.73(a)(2)(ix)(A)
D 20.2203(a)(2)(i)
D 50.36(c)(1)(i)(A)
D 50.73(a)(2)(iv)(A)
D 50.73(a)(2)(x)
- 10. POWER LEVEL D 20.2203(a)(2)(ii)
D 50.36(c)(1)(ii)(A)
D 50.73(a)(2)(v)(A)
D 13.71(a)(4)
D 20.2203(a)(2)(iii)
D 50.36(c)(2)
[{] 50.73(a)(2)(v)(B)
D 73.71(a)(5)
D 20.2203(a)(2)(iv)
D 50.46(a)(3)(ii)
D 50.73(a)(2)(v)(C)
D 13.77(a)(1) 100 D 20.2203(a)(2)(v)
D 50.73(a)(2)(i)(A)
[{] 50.73(a)(2)(v)(D)
D 73.77(a)(2)(i)
D 20.2203(a)(2)(vi)
D 50.73(a)(2)(i)(B)
D 50.73(a)(2)(vii)
D 73.77(a)(2)(ii)
D 50.73(a)(2)(i)(C)
D OTHER Specify in Abstract below or in NRC Form 366A
- 12. LICENSEE CONTACT FOR THIS LER LICENSEE CONTACT TELEPHONE NUMBER (Include Area Code)
Thomas G. Cleary, Manager Nuclear Station Licensing (860) 4.44-4377 CAUSE SYSTEM COMPONENT MANU-REPORTABLE I
CAUSE
SYSTEM COMPONENT MANU-REPORTABLE FACTURER TO EPIX FACTURER TOEPIX
- 14. SUPPLEMENTAL REPORT EXPECTED
- 15. EXPECTED MONTH DAY YEAR
- DYES (ff yes, complete 15. EXPECTED SUBMISSION DATE)
[{]NO SUBMISSION DATE ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines)
On April 27, 2016, with Millstone Power Station Un.it 2 (MPS2) in MODE 1 at 100% power, plant personnel inadvertently left the door to the turbine driven auxiliary feed pur!ip room open. This condition existed for less than one hour.. The door is a high energy line break (HELB) barrier. With the door open there is no HELB protection for the motor driven auxiliary feedwater (AFW) pumps thus potentially r 1endering both trains of AFW inoperable.
The cause is human performance error. The door is conspicuously labeled on each side that it is a HELB boundary door and must be closed except for entry and exit from the room. Corrective actions are being taken in accordance with the station's corrective action program.
This condition is being reported pursuant to 10 CFR 50.73(a)(2)(v) as any event or condition that alone could have preventea the fulfillment of the safety function of structures or systems that are needed to: (B) remove residual heat; and (D) mitigate the consequences of an accident.
NRC FORM 366 (11-2015) (11-2015}
U.S. NUCLEAR REGULATORY COMMISSION
~l\\ltlQU(
R
.. ~ ******.!' LICENSEE EVENT REPORT (LER)
CONTINUATION SHEET
- 1. FACILITY NAME
- 2. DOCKET Millstone Power Station Unit 2 05000336
- 1.
EVENT DESCRIPTION
APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018
, the NRG may not conduct or sponsor, and a person is not required to respond to, the information collection.
YEAR 2016
- 6. LER NUMBER I
SEQUENTIAL I NUMBER 001 REV NO.
00
- 3. PAGE 3 of 3 This was a human performance problem and was addressed in accordance with appropriate policies.
Corrective actions are being taken in accordance with the station's corrective action program.
- 5.
PREVIOUS OCCURRENCES
MPS2 LER 2013-002-00, Turbine Driven Auxiliary Feedwater Pump HELB Door Left Open During Surveillance Test.
- 6.
Energy Industry Identification System (EllS) codes Auxiliary feedwater system - BA TDAFW pump - TRB,
- P Electric motor driven auxiliary feedwater pump - MO, P Door-DR Steam Generator - SG