L-2011-150, License Amendment Request for Extended Power Uprate
| ML11112A079 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 04/21/2011 |
| From: | Richard Anderson Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2011-150 | |
| Download: ML11112A079 (13) | |
Text
Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 34957 0
April 21,2011 I:PL L-2011-150 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Re:
St. Lucie Plant Unit I Docket No. 50-335 Renewed License No. DPR-67 License Amendment Request for Extended Power Uprate
Reference:
(1) R.L. Anderson (FPL) to U.S. Nuclear Regulatory Commission (L-2011-259),
"License Amendment Request for Extended Power Uprate, November 22, 2010, Accession No. ML103560419.
By letter L-2010-259 dated November 22, 2010 [Reference 1], Florida Power & Light Company (FPL) requested to amend Renewed Operating License DPR-67 pursuant to 10 CFR 50.90. As specified in L-2010-259, the proposed amendment will increase the licensed core power level of Unit 1 from 2700 MWt to 3020 MWt and revise the Renewed Operating License and the Technical Specifications to support operation at this increased core thermal power level.
Subsequent to the November 22, 2010 submittal, FPL was notified by a supporting vendor that an error was identified in the St. Lucie Unit I Extended Power Uprate (EPU)
Increase in Steam Flow analysis. The error affects the analysis results provided in Licensing Report (LR) 2.8.5.1.1 of Attachment 5 of FPL letter L-2010-259. Attachment I to this letter provides the revised pages of LR 2.8.5.1.1 with the error corrected. The revised pages consist of replacement tables and figures associated with the Increase in Steam Flow analysis results and supersede the corresponding tables and figures provided in Attachment 5 ofL-2010-259. The error also affects LR 2.8.5.0 of Attachment 5 of L-2010-259; however, the impact on LR 2.8.5.0 is a conforming change only and is limited to the Table 2.8.5.0-10 summary of analysis limits and results to reflect the revised maximum centerline temperature from the Increase in Steam Flow analysis results.
AwOl an FPL Group company
In accordance with 10 CFR 50.91(b)(1), a copy of this letter is being forwarded to the designated State of Florida official.
This submittal does not alter the significant hazards consideration or environmental assessment previously submitted by FPL letter L-2010-259. This submittal contains no new commitments and no revisions to existing commitments.
Should you have any questions regarding this submittal, please contact Mr. Christopher Wasik, St. Lucie Extended Power Uprate LAR Project Manager, at 772-429-7138.
I declare under penalty of perjury that the foregoing is true and correct to the best of my knowledge.
Executed on 4,prl
..A,
,LoL Very truly yours, Richard L. Ande o Site Vice President St. Lucie Plant Attachment cc:
Mr. William Passetti, Florida Department of Health
St. Lucie Unit 1 Docket No. 50-335 L-2011-150 Page 1 of 11 Table 2.8.5.1.1-1 Increase in Steam Flow Sequence of Events Case Event Time (sec.)
Hot Zero Power Turbine control valves fully opened 0.0 AFW reaches full delivery rate VHPT setpoint reached 11.0 Peak power in transient 11.1 Maximum clad surface heat flux 11.2 Reactor scram on VHPT (including trip response 12.1 delay)
CEA insertion begins 12.6 Maximum fuel centerline temperature 14.8 CEAs fully inserted 15.5 Main steam isolation setpoint reached 21.4 HPSI setpoint reached 26.1 Main steam isolation completed 28.3 Hot Full Power SBCS system opens to full capacity 0.0 VHPT setpoint reached 19.4 Reactor scram on VHPT (including trip response 20.3 delay)
CEA insertion begins 20.8 Minimum (prior to scram) core inlet temperature 20.8 reached Peak neutronic power 20.8 Maximum clad surface heat flux 20.9 MDNBR 20.9 St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-11 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 L-2011-150 Page 2 of 11 Table 2.8.5.1.1-2 Increase in Steam Flow Results Criterion HZP HFP Limit MDNBR Bounded 1.385 1.164 by HFP Peak Centerline Temperature 2,804-F N/A 4,623-F Peak LHR N/A 18.7 kW/ft 22.3 kW/ft St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-12 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 500 400 E 300 I-
_ 200 100 0.
L-2011-150 Page 3 of 11 Time (s)
Figure 2.8.5.1.1-1 Increase in Steam Flow (HZP)
Reactor Power St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-15 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 L-2011-150 Page 4 of 11 X
- )
x 15a)
'a 0
900 700 500 300 100
-100
-300
-500 0 5
10 15 Time (s)
Figure 2.8.5.1.1-2 Increase in Steam Flow (HZP)
Total Core Heat Flux Power 20 St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-16 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 2400 2200 2000
- 3 o 1800 1600 1400 L 0
L-2011-150 Page 5 of 11 5
10 15 Time (s)
Figure 2.8.5.1.1-3 Increase in Steam Flow (HZP)
Pressurizer Pressure 20 St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-17 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 540 L-2011-150 Page 6 of 11 I
520
- Avg.
Thot..
Avg. Tcold CLL E
500 480 F 460 0 5
10 Time (s) 15 20 Figure 2.8.5.1.1-4 Increase in Steam Flow (HZP)
RCS Loop Temperatures St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-18 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 50000 400004 L-2011-150 Page 7 of 11 pp p
- 2 0
U-Mi (V
30000 k 20000 10000 0 5
10 Time (s) 15 20 Figure 2.8.5.1.1-5 Increase in Steam Flow (HZP)
RCS Total Loop Flow Rate St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-19 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 900-800
- V5 700 600 U) 500 4OO L 0
L-2011-150 Page 8 of 11 5
10 15 Time (s) 20 Figure 2.8.5.1.1-6 Increase in Steam Flow (HZP)
Steam Generator Pressures St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-20 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 5000 4000 200 a) 4E 3000 Cn (n
1000 0
L-2011-150 Page 9 of 11 30 Time (s)
Figure 2.8.5.1.1-7 Increase in Steam Flow (HZP)
Steam and Feedwater Flow Rate St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-21 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 L-2011-150 Page 10 of 11 4.00 2.00 0.00
-2.00
-4.00 n,
-6.00
-8.00
-10.00 0
5 10 15 Time (s) 20 Figure 2.8.5.1.1-8 Increase in Steam Flow (HZP)
Reactivity Feedback St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-22 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve
St. Lucie Unit 1 Docket No. 50-335 3000 2000 L-2011-150 Page 11 of 11 C-E 0)
I--
1000 0
15 Time (s) 30 Figure 2.8.5.1.1-9 Increase in Steam Flow (HZP)
Peak Fuel Centerline Temperature St. Lucie Unit 1 EPU Licensing Report 2.8.5.1.1-23 Decrease in Feedwater Temperature, Increase in Feedwater Flow, Increase in Steam Flow, and Inadvertent Opening of a Steam Generator Relief or Safety Valve