ML20128Q804

Cycle 13 Summary of Startup Testing

ML20128Q804
Person / Time
Site:	Calvert Cliffs
Issue date:	10/14/1996
From:	Katz P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9610210178
Download: ML20128Q804 (11)

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l'ETER E. KATz Baltimore Gas and Electric Company Plant General Manager Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby. Maryland 20657 410 495-4101 October 14,1996 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Unit 1. Cycle 13. Startuo Report: Technical Soecification 6.9.1.1

REFERENCE:

(a) Calvert Cliffs Nuclear Power Plant Technical Specification 6.9.1.1 In accordance with Reference (a), attached is the Calvert Cliffs Unit 1, Cycle 13, Startup Report. This report must be submitted within 90 days of completion of the testing or resumption of commerchl rower operation, whichever comes first. Unit I resumed commercial power operation on July 29,1996.

Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, PEK/DWM/bjd '

Attachment cc: D. A. Brune, Esquire H. J. Miller, NRC J. E. Silberg, Esquire ResidentInspects NRC Director, Project Directorate I-1, NRC R. I. McLean, DNR A. W. Dromerick, NRC J. H. Walter, PSC 9610210178 961014 ,

PDR ADOCK 05000317 P PDR 210047

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BALTIMORE GAS AND ELECTRIC COMPANY CALVERT CLIFFS NUCLEAR POWER PLANT UNIT 1 Docket Number 50-317 License Number DPR-53 Unit 1 Cycle 13 Summary of Startup Testing O

CCNPP Unit 1 Cycle 13 Startup Testing Report Page 2 of 10 INTRODUCTION The Unit 1 Cycle 13 core is designed for Full Power Operation Burnup of 20,012 MWD /MTU.

The core loading is listed in Table 1, and the core lor. ding pattern is shown in Figure 1. The initial startup of Cycle 13 began with Control Element Assembly (CEA) and Control Element Drive Mechanism Testing (CEDM) on June 23,1996. CEA and CEDM testing along with the Reactor Coolant System (RCS) flow measurement were completed on June 24,1996. Reactor Coolant Pump inspections delayed the remainder of startup testing until late July. On July 28,1996 startup testing resumed with a second RCS flow measurement. Initial Criticality was declared at 16:52 on July 29,1996. Startup testing concluded with the Variable Tavg test to determine the Moderator Temperature Coefficient (MTC) on August 10, 1996.

The startup testing evolution was controlled under four Post Startup Test Procedures (PSTP). Each is listed below with a description of the tests contained in the procedure.

PSTP-2, Initial Approach to Criticality and Low Power Physics Testing:

• Dual CEA Symmetry Check e

Critical Boron Concentration (CBC) Measurements e Isothermal Temperature Coefficient (ITC) Measurement e CEA Group Worth Measurements PSTP-13, CEDM Performance Testing:

• CEA and CEDM Testing e CEA Drop Time Testing PSTP-3, Power Escalation Testing

• Radial Power Distribution Comparisons at 30,60, 85, and 97% Rated Thermal Power (RTP).

• Core Synunetry Power Distribution Measurements at 30,60,85, and 97% RTP.

ITC and Power Coefficient (PC) Measurement at 97% RTP PSTP-301, RCS Flow Measurement:

M e RCS Flow Measurement

• Core Differential Pressure Comparison

CCNPP Unit 1 Cycle 13 Startup Testing Report Page 3 of 10 TEST CRITERIA The following review and acceptance criteria were applied to the individual tests during the startup evolution Parameter Review Criteria Accen#ance Criteria RCS Flow

1. 0% RTP 390,600-398,400 gpm 384,900-410,350 gpm

2. 0% RTP after impeller change 390,600-398,400 gpm 382,725-409,525 gpm

3. 85% RTP 388,455-396,255 gpm 383,249-409,525 gpm Core AP 11.61 i 0.75 psid s 14.26 psid CEA Drop Time s 2.75 seconds s 2.95 seconds (90% inserted)

CEA Symmetry Less than 10% tilt None CBC i 50 ppm of predicted i 100 ppm of predicted CEA Worth

1. Group Greater of f 15% or Greater ofi 15% or 0.1% Ap of predicted i 0.1% Ap of predicted

2. Total i 10% of predicted i 10% of predicted 4

ITC i 0.3 x 10 Ap of predicted Per the MTC Technical (0% and 97% RTP) Specification (TS)

PC (97% RTP) i 0.2 x 10" Ap/% RTP i0.3 x 10" Ap/% RTP Power Distributions

1. 30% RTP (Interior / Peripheral) i 15% / 20% of predicted FxyT and FrT within TS Limits

2. 60,85, and 97% RTP i 10% /15% of predicted FxyT, FrT, and Tq (Interior / Peripheral) within TS Limits Core Symmetry

1. Box Powers Same as Power Distribution Same as Power Distribution I

2. Tilt

a. 30% RTP s5% None

b. 60, 85, and 97% RTP s2% s3%

3. Symmetric ICI Box powers 10 % None

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CCNPP Unit 1 Cycle 13 Startup Testing Report Page 4 of 10 TEST RESULTS Table 2 summarizes the test results, individual tests are discussed below CEA and CEDM Testing CEA and CEDM testing was performed prior to initial Cycle 13 criticality with all four Reactor Coolant Pumps running and the RCS temperat ire at nominal Hot Zero Power (HZP) conditions (532 F). The operability of the CEDMs was verified by checking the associated light operations for each CEDM. This was accomplished with only a few minor problems noted. These minor problems were corrected and each CEDM was subsequently re-verified to be operable.

The CEA drop times were measured from the full out position to 90% and 100% insertion. All CEAs met both the listed Acceptance and Review criteria. The slowest CEA to 90% insertion was Group 1 CEA # 65, with a 90% insertion time of 2.46 seconds.

Dual CEA Symmetry Checks The Partial Symmetry Check was performed by individually inserting each dual CEA in Shutdown Group C. For each insertion, the reactivity change was calculated. For each symmetric set, the magnitude of the reactivity change for each dual CEA was consistent. In addition tilt was calculated using the measured reactivity changes. The largest calculated tilt was 5.36%, which was within the Review Criteria of i 10%.

RCS Flow The RCS Flow was initially measured in June at Hot Standby conditions with all four RCPs running. The measured flow was 395,216 gpm, which was within the Review and Acceptance Criteria. The RCP differential pressures were slightly higher than previous cycles as expected because of the significant number of steam generator U-tubes that were plugged. The core differential pressure was consistent with previous cycles.

Near the end of July, RCS flow was again measured because the 11B RCP rotating assembly was replaced after the initial measurement in June. Test conditions were Hot Standby with all four RCPs running. The measured flow was 394,198 gpm, which was again within the Review and Acceptance Criteria. RCP and core differential pressures were consistent with the previously measured values.

Critical Boron Concentration (CBC), HZP, All Rods Out (ARO)

The CBC was determined by obtaining from Chemistry the results of a RCS boron grab sample taken at conditions near ARO and adjusting it to an ARO condition. The ARO CBC was determined to be 2016 ppm, compared to a predicted value of 1992 ppm. This value was within both Review and Acceptance Criteria.

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CCNPP Unit 1 Cycle 13 Startup Testing Report Page 5 of 10 Isothermal Temperature Coefficient The ITC was determined by decreasing and increasing RCS temperature while measuring the associated reactivity change. The measured reactivity was divided by the temperature change to arrive at a value for the ITC.4 The calculated ITC with Group 5 CEAs at approximately 105 inches withdrawn was 0.2495 x 10 Ap/ F. The measured value met both Review and Acceptance Criteria.

CEA Group Worth Measurement The worth of each Regulating CEA was determined using the dilution method. Each individual a

measured group worth met the Review and Acceptance Criteria, as did the total measured group worth for all the Regulating CEAs.

Radial Power Distribution Comparison The Radial Power Distribution comparisons were performed at 30, 60, 85, and 97% RTP, The power distribution calculated by CECOR was compared to the ROCS predicted values for each power level. At each power plateau, the peaking factors (FrT and FxyT) and the azimuthal tilt (Tq) were compared to their TS limits. In all cases, the FrT, FxyT, and Tq were within their respective TS limits. In addition, all comparisons of box powers, both interior and peripheral, to predicted values from ROCS fell within Review and Acceptance Criteria.

Core Symmetry Power Distribution Measurements The Core Symmetry Evaluation for the Box Powers met both Review and Acceptance Criteria as described above for the Radial Power Distribution Comparisons. The evaluation of core tilt at each power level indicated that the Review and Acceptance Criteria were met.

The final evaluation of core symmetry involved comparison of symmetric Incore Instrumentation (ICI) Box Powers. This evaluation was performed by comparing synunetric ICI Box Powers, summed over all axial detector levels, to predicted values as well as determining a tilt based on only that set of symmetric detectors. In all cases, the Review Criteria ofi 10% was met.

ITC and Power Coefficient (PC) Measurement The ITC and PC were measured at 97% RTP with the Regulating Group 5 CEAs at approximately 105 inches withdrawn. These parameters were determined by adjusting either moderator temperature or reactor power while adjusting turbine load to maintain the unaffected parameter approximately constant. The measured values for the ITC and the PC met both Review and Acceptance Criteria

4 CCNPP Unit 1 Cycle 13 Startup Testing Report Page 6 of 10 REFERENCES

1. J. E. Baum (ABB) to W. J. Lippold (BGE), " Calvert Cliffs Unit 1 Cycle 13 - Reload Design Report," B-%-001, dated January 3,1996.

2. PSTP-2, Initial Approach to Criticality and Low Power Physics Testing, Revision 16.

3. PSTP-13, CEDM Performance Testing, Revision 5.

4. PSTP-3, Escalation to Power Test Procedure, Revision 18

5. PSTP-301, RCS Flow Measurement, Revision 0

6. PSTP-4, Variable Tavg Testing, Revision 31

6. NEOP-13, Unit 1 Technical Data Book, Revision 3 i

e e Reviewed by: W/ Date: /d [

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CCNPP Unit 1 Cycle 13 Startup Testing Report Page 7 of 10 Table 1: Unit 1 Cycle 13 Core Loading Ilakh Number of Shim Rodo Numher of Accomblies Enrichment IRO 20 24 4.48 W/o IRI 44 28 4.48 W/o IR2 68 32 4.48 W/o 1RT 44 4 4.00 W/o IPO 0 16 4.28 W/o IPI 20 12 4.28 W/o IP2 44 8 4.28 W/o IP3 60 52 4.28 W/o IN 0 8 4.20 W/o INI 4' 16 4,18 W/o IN2 8' 16 4,19 W/o 2J1 0 1 3.40 W/o Not Shim rtxis refers to Erbium (Er2 0 3) except for

• which refers to B 4C bearing shim rods.

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CCNPP Unit 1 Cycle 13 Startup Testing Report Page 6 of 10 E

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FIGURE 1: Unit 1 Cycle 13 Core Loading W

21 1N238 1N196 1N107 1N200 20 1N203 1N006 iP014 1R001 1R006 1R023 1P012 1N000 1N219 19 1N117 1R000 iP000 IR101 iP206 1P106 iP203 1R119 1P002 1R019 1N104 18 NiO2 1Rei3 iP112 iRiO4 1P320 1RiO. 1P34. 1Ri27 1 Psi 4 1R116 1PiO2 iR0iG iNii.

1 1N231 1R017 1P103 1R201 iP311 1R206 1P348 1R200 1P300 1R223 1P301 1R203 1P100 1R011 1N211 16 1N000 1P003 1R113 1P304 1R213 1P339 1R228 1P341 1R219 1P333 1R214 1P310 1R107 1P006 1N004 iPO O 1R117 P314 1R221 1P336 1R224 1P326 1R121 1P122 1R227 1P338 1R207 15 1P317 1R103 1P016 14 _ 1N210 1N227 13 1R021 iP201 1R176 1P306 1R217 iP323 1RT1 1P331 1RT4 1P326 1R230 1P346 1R111 1P207 1R003 12._ 1N116 1N108 11 1R00. 1P107 iP362 1R212 iP344 1Ri24 1P32. 2;1is iP330 1Ri23 iP343 1R21, iP361 1P10. 1R007 10 _ 1Ni12 1Niei 9 1R004 1P20s 1R112 1P346 1R231 iP326 1R73 iP332 1R72 1P324 1R2ie iP306 1R12e iP202 1R022 8 .- 1N262 1N202 7 iP0iG 1R104 iP3is 1R20s iP337 1R22e 1P321 1R1:2 iP327 1R226 1P336 1R222 iP316 1R15s 1P00e 6 1N011 iP006 1R100 1P300 1R214 1P334 1R220 1P342 1R232 1P340 1R214 1P303 1R114 1Pr44 1N006 5 - 1N200 1R012 iP110 1R204 1P302 1R224 iP307 1R210 1P347 1R204 iP312 1R202 1P104 1R018 1N200 l

4 1N104 1R016 1P101 1R116 1P313 1R128 1P360 1R110 1P319 1R106 iP111 1R014 1N120 3 1N119 1R020 1P001 1R120 1P204 1P106 iP208 1R102 iP007 1R010 1N103 I

2 1N207 1N007 1P011 1R024 1R00s 1R002 1P013 1Noi0 1N201 1 1N206 1N100 1N110 1N232 Y X W V T S RpNML K J H G F E D C B A I

s CCNPP Unit 1 Cycle 13 Startup Testing Report Page 9 of 10 TABLE 2: Sim! MARY OF UNTT 1 CYCLE 13 TEST RESULTS Page 1 of 2 Test Descriptiort Predicted Measured RCS Flow

1. 0% RTP 394,494 gpm 395,216 gpm

2. 0% RTP after impeller change 394,494 gpm 394,198 gpm

3. 85% RTP 392,284 gpm 393,203 gpm Core AP

1. 0% RTP 11.61 psid 11.71 psid

2. 0% RTP after impeller change 11.61 psid 11.88 psid l CEA Drop Time None 2.46 seconds (Slowest to 90% inserted)

Critical Boron Concentration l

1.ARO 2016 ppm 1992 ppm 1

2. All Regulating Groups inserted 1593 ppm 1573 ppm CEA Worth

1. Group 1 0.420 %Ap 0.421 %Ap

2. Group 2 1.060 %Ap 0.971 %Ap

3. Group 3 0.903 %Ap 0.863 %Ap

4. Group 4 0.667 %Ap 0.635 %Ap

5. Group 5 0.327 %Ap 0.346 %Ap

6. Total 3.377 %Ap 3.236 %Ap Isothermal Temperature Coefficient 4 4

1. HZP, Group 5 @ 105" withdrawn 0.22 x 10 ApFF 0.2495 x 10 ApFF

2. HZP, corrected for test conditions 0.194 x 10" AprF N/A 4

3. 97%, Group 5 @ 105" withdrawn -0.53 x 10 AprF -0.494 x 10" ApfF 4

Power Coefficient -0.99 x 10 Ap/% RTP -1.04 x 10" Ap/% RTP (97%, Group 5 @ 105" withdrawn)

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.. CCNPP Unit 1 Cycle 13 Startup Testing Report Page 10 of 10 TABLE 2:

SUMMARY

OF UNIT 1 CYCLE 13 TEST RESULTS Page 2 of 2 Power Distributions Peaking Factors 30% RTP 60% RTP 85% RTP 97% RTP FxyT 1.6984 1.6803 1.6830 1.6624 FrT 1.6092 1.5974 1.6022 1.5162 Tg 0.0193 0.0180 0.0171 0.0151 Box Powers 30% RTP 60% RTP 85% RTE 97% RTP Interior 7.66 % -5.37% 5.5 % -6.69 %

Peripheral 17.79 % 14.78 % 13.8 % 11.89 %

Core Symmetry 30% RTP 60% RTP 85% RTP 97% RTP Tilt 1.93 % 1.80 % 1.71 % 1.51 %

Symmetric Box Powers 7.03 % 6.12 % 6.37 % 5.87 %

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