05000280/LER-2019-001, Failure to Align Angle Drive to Pump Results in Inoperable Emergency Service Water Pump
| ML19273A424 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 09/19/2019 |
| From: | Mladen F Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 19-402 LER 2019-001-00 | |
| Download: ML19273A424 (4) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(ii) 10 CFR 50.73(a)(2)(viii) 10 CFR 50.73(a)(2)(viii)(B) 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), Loss of Safety Function 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)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i) |
| 2802019001R00 - NRC Website | |
text
SEP 1 9 20T9 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555-0001
Dear Sir or Madam:
10CFR50.73 Virginia Electric and Power Company Surry Pow~r Station 5570 Hog Island Road Surry, Virginia 23883 Serial No.:
SPS:
Docket No.:
19-402 SCN 50-280 50-281 License No.: DPR-32 DPR-37 Pursuant to 1 OCFR50.73, Virginia Electric and Power Company hereby submits the following Licensee Event Report appl(cable to Surry Power Station Unit 1 and Unit 2.
Report No. 50-280, 50-281 I 2019-001-00 This report has been reviewed by the Station Facility Safety Review Committee and will be forwarded to the Management Safety Review Committee.
Enclosure Commitment contained in this letter: None Very truly yours, F. Mladen Site Vice President Surry Power Station cc:
U.S. Nuclear Regulatory Commission, Region II Marquis One Tower, Suite 1200 245 Peachtree Center Ave., NE Atlanta, GA 30303-1257 NRG Senior Resident Inspector Surry Power Station
~-
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY 0MB: NO. 3150-0104 EXPIRES: 03/31/2020 (04-2017) httg://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1022/r3/)
the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- 3. PAGE Surry Power Station, Unit 1 05000 280 1 OF 3
- 4. TITLE Failure to Align Angle Drive to Pump Results in Inoperable Emergency Service Water Pump
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED I
SEQUENTIAL I REV FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR NUMBER NO.
MONTH DAY YEAR Surry Power Station, Unit 2 281 05000 FACILITY NAME DOCKET NUMBER 07 21 2019 2019. 001. 00 09 19 2019 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}
N 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>
D 2q.2203(a)(4)
D so.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 73.11(a}(4>
D 20.2203(a)(2){iii)
D so.36(c)(2)
D 50.73(a)(2)(v)(B)
D 73.71(a)(s)
D 20.2203(a)(2)(iv)
D so.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)
D 50.73(a)(2)(v)(D)
D 73.77(a)(2)0>
. D 20.2203(a)(2)(vi)
[ZJ 50.73(a)(2)(i)(B)
D 50.73(a)(2)(vii)
D 73.77(a)(2)(ii)
\\/r}
- - t! ~ ;*.-.
D 50.73(a)(2)(i)(C)
D OTHER Specify In Abstract below or in
3.0 CAUSE OF THE EVENT
YEAR 2019
- SEQUENTIAL NUMBER 001 REV NO.
00 This event was caused by the angle drive to pump shaft not being aligned when the pump was replaced in May 2019.
The decision making was not appropriate in that only first line supervisors were consulted before making the decision not to perform the alignment. The decision should have been elevated to ensure a broader group of personnel (technical experts in vertical pump alignment and their leaders) were involved in the decision.
4.0 IMMEDIATE CORRECTIVE ACTIONS
ESWP 1 B pump to angle drive alignment was performed in accordance with station procedures. The pump was tested and returned to service on July 25, 2019.
5.0 ADDITIONAL CORRECTIVE ACTIONS
Although ESWPs 1 A and 1 C have been in service for multiple years since their last replacement, they were inspected for extent of condition. Results showed the packing gland follower bolts/nuts were tight with no visual signs of damage.
Additionally, satisfactory vibration levels and a history of successful performance runs, without gland follower damage or packing extrusion, indicated that no significant misalignment existed between the pump and angle drives.
6.0 ACTIONS TO PREVENT RECURRENCE The maintenance procedure will be revised to provide additional guidance and require an angle drive to pump alignment when the angle drive is removed.
Other actions focusing on improving proficiency and decision making for the groups involved will be implemented by the Corrective Action Program.
7.0 SIMILAR EVENTS
None 8.0 MANUFACTURER/MODEL NUMBER Bingham / VL TM Johnson right angle gear drive/ HH425
9.0 ADDITIONAL INFORMATION
None. Page 3
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