ML13086A549

MC4672 & MC4673 - Licensee Presentation-Category 1, Public Meeting on March 20, 2013 with Respect to GL2004-02, GSI-191

ML13086A549
Person / Time
Site:	Calvert Cliffs
Issue date:	03/20/2013
From:	Constellation Energy Group, EDF Group
To:	Office of Nuclear Reactor Regulation
References
GSI-191, TAC MC4672, TAC MC4673
Download: ML13086A549 (19)

Text

CENGSM a joint venture of Energy, Constellation 'eDF Calvert Cliffs Chemical Effects in Risk-Inform ed GSI-191 Resolution Third Discussion With NRC Staff March 20, 2013

Agenda

" Introductions

" GSI-191 Resolution Plan

• Detailed review of CCNPP Chemical Effects PIRT Items

• Overview of CCNPP Integrated Chemical Effects Test Program Plan & Test Protocol a Open Items from January 8, 2013 Conference Call

• Schedule for future periodic meetings CENG-2

CCNPP Attendees

" Elliott Flick- General Manager Fleet Engineering

" Tom Konerth - Supervisor Mechanical Design

• Ken Greene - Licensing Engineer

• John Swailes - Project Manager GSI-191

" Craig Sellers - Project Manager RI GSI-191

" Andrew Henni - Lead Design Engineer RI GSI-191

• Steve Kinsey- Chemical Effects

" Josh Wargo - Chemical Effects & Testing

" Robert Peterson - Independent Oversight RI GSI-191 CENG ajoin, ventureo 0D

Primary Objectives of Meeting m Review & Work Towards Agreement on Phenomena Identification and Ranking Table (PIRT) Items m Review Test Protocol m Work Towards Agreement on Plans & Protocols

• Prefer to Divide Time Between PIRT & Protocol Discussion CENG-ajoin venture of 0~~o~w 4

CCNPP GSI-191 Resolution Plan SECY-12-0093 Option 2 Plant Modifications

- Aluminum Minimization

" Mineral Wool & Other Insulation Replacement

" Scissor Lift Removal

- NPSH Assurance

" Refueling Cavity Drain Enlargement

" Recirculation Suction Header Temperature Instrumentation

- Other Operational Considerations

" Secure Containment Sprays

• Reduce Recirculation Flow

" Additional Input to PAMs for Facilitate Post-RAS Operation

" Large Scale Fiber Insulation Replacement CENG.

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CCNPP GSI-191 Resolution Plan (continued)

SECY-12-0093 Option 2

" Testing

- Integrated Chemical Effects Testing

- Strainer Bypass (Penetration) Testing

- Strainer Head Loss Testing, as Required

" Industry Activities

- Partner in STP RI GSI-191 Resolution Project

- Participant in PWROG Comprehensive Analysis and Test Programs OENG- --

CCNPP Chemical Effects PIRT Items

[Calvert Cliffs PIRT Item Summary]

1. Addressed in Tests similar to STP

- NRC staff agreed with STP approach.

- Discussion as Needed.

2. Addressed in Tests similar to STP

- NRC staff has yet to agree with STP approach.

- Require Detailed Discussion with the NRC Staff.

3. PIRT items Not Planning to Address in Tests

- Require Detailed Discussion with the NRC Staff.

4. Resolved PIRT

- NRC has previously agreed.

- May not be addressed in testing. Discussion as Needed.

CENG-

Page-by-Page Review of PIRT Report

[CCN PP-CH LE-003]

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I j4 2.0 Eadlaleica Coesidraftems 4.5 Copreclptanion L.0 AMlmeratean and Sottia diamical Elfects 2.Radiological effecis. corrosion reo Chanps 5.1 Inargmani gomneration 2.3 fdyirolisl 2.4 CouversiofNztmfhNOi 5.2 Deposition mnd seeding x t

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6.0 Orgamics and Coating 3.1 Crud release 6.1 BA reak omily to Orgmmc sources 3.2 Jetmplagemet 3.3 Debris asixpm'del/liber rateo 6.2 Oramc agglollmerationt 3.4 mmects oftdissolived sillca froms RCS ad RWIST 6.3 Organic complertin-h 3.5 Coautminmemtsaytrospert 6.4 Co*-atnugdsouonadlchg A.6 hu" debris dissol*utio 7A Clenaical Effects an Domustmam Systemn Performance 3.7 3.2 3.9 Subsuujd source ormsi lead (Pb) shielding Sehmwjpd source tarms copper (Cu)

Couceem MO1 A~icytg efets at"amo a &ng 7.1 7.2 7.3 ECCS pump: seal abrasion and ewosion/corrosion Beat exchangert dapositim ndcogging Reactor coam; fuel deposition and precipitaton I

7A4 Reactor core: diminished beat tanssiir 3.1 Advanced metalli corrosion undaersading 7.5 Reactor cr:blocking offkow passages 3.12 Simbmmariit so-c t-m- biological grwt .n debris beds 3.13 Eaacter Cair fuel deposition spaling 7.6 Reactor core: particulate, settling CENG.

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Overview of Chemical Effects Test Program

" Objective

- Identify Chemical Effects Head Loss on "Detector" Debris Bed

- Determine Time and/or Temperature at Which Chemical Effects Head Loss Occurs

" Approach

- Long-Term (-~30 Day) Integrated Chemical Effects Tests

- Circulate Flow Through Repeatable "Detector" Debris Bed

- Similar to STP CHLE Test Program CENG.

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Overview of Test Plan CCNPP-CHLE-O01

" Begin with Design Basis Tests

- DEGB LBLOCA Conditions

- Multiple Plant Configurations

" First Stage Aluminum Removal

" Second Stage Insulation Replacement

" Potential Negligible Chemical Effects Outcome

- Discuss Regulatory Response

• Risk-Informed Approach

- Medium & Small Breaks

- Consistent with STP RI Approach CENGt a 0,n e

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Overview of Integrated Test Protocol CCNPP-CHLE-002

• Use CCNPP-Specific Chemistry Conditions

• Use CCNPP-Specific Materials

- Insulation

- Fire Barrier Material

- Coatings

- Lead Blanket Shielding

- Exposed Concrete

- Metallic Materials

° Aluminum

" Galvanized Steel

" Copper

• Lead CENG-a joint venture of 0~ WeotL

Overview of Integrated Test Protocol (cont.)

" Simulate Bounding 30-Day Sump Temperature

- Considering Pressurized Facility for >212°F

- Planning Autoclave Tests to Investigate Impact of Short Duration High Temperature Conditions

• Sump Chemistry & Scaled Materials

• 12 Hours at 280 OF

• 12 Hours at 190 OF

• Compare Relative Elemental Concentrations in Fluid

• CCNPP-CHLE-005

" Stepwise Reduce Temperature Day 31

- Developing Basis for Temperature Plateau Durations A-o i CENGI.

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Detector Debris Bed m Developed in late 2008

• Used for Earlier CCNPP Testing

- Reviewed with NRC n Also used in Indian Point & Vogtle Testing

• Very Repeatable

" Very Sensitive

" Composition: Sustne untt (ngrm NUKON 16 +/- 0.1 Silicon carbide 80 +/- 0.1 CENG-a joint venture of-0onW&Lo .Em I ,ON I 13

Detector Debris Bed Repeatability

• Repeatability 2.5 I I I t

Demonstrated in 10-ppm Al 2

Multiple Test Programs '4

- Calvert Cliffs 1.5

- Indian Point 0 Al r75-ppm

- Vogtle

• Demonstrated at 0.5

-ppm AJ Multiple Temperatures and Flow Rates 0 I I 0 10 20 30 40 50 60 70 80 Time [hr]

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Detector Debris Bed Sensitivity

• Sensitivity Verified by use of WCAP-16530 '-- 4 Surrogate NAS 8 Temperature 0

- 135FOF

- 0.028 ft/sec velocity _ I

- 1ppm NAS 4 80 WCAP chemical debris 2 added to loop 60

• >40x Increase in Debris 0 - 40 Bed DP 0 1 2Time [hr]

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Page by Page Review of Test Protocol CCNPP-CHLE-002 I I I1 I1 4 S I1 4 I1 I a ~

2 3 4 1 5 4 I II I*T* "rw* ArT *n u*v*w I a ISTOP THINK ACT AND REVIEW REACTION CHA8-iE INTIAL S(JLuJTIoN PREPARA*ION CHAM'BER A

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Possible Results

" Large Chemical Effects Head Loss

- Not Anticipated

- <140 OF

" Small Chemical Effects Head Loss

- Possible

- <140 OF

" Negligible Chemical Effects Head Loss

- Possible CENG a joint venture of 0

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Open Items- January 8, 2013 Call

• Piping Less than 2" NPS

- 1" & /" DP Instrument Piping/Tubing

- 3/4" Pressure & Level Instrument Piping/Tubing

- 3/4" Reactor Head Vent Piping

• Debris Transport

- NRC concerned that STP Methods not Approved

- CCNPP not considering Time-Dependent Transport for Strainer Head Loss or Chemical Effects

- May use Time-Dependent Transport for In-Vessel Effects

• 100% Particulate Latent Debris

- Current Approach is 85% Particulate 15% Fiber

- Consistent with NEI 04-07

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Schedule for Future Periodic Meeting

" CCNPP-Specific Meetings

- Request Monthly Until Testing Complete

- Quarterly After Testing Complete

" STP-Specific Meetings

- CCNPP Will Participate

• STP Participant-Specific Meetings

- CCNPP Will Participate CENG.

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