ML20211A135

Summary of 970708 Meeting W/Siemens Power Corp in Rockville,Md Re Status of SPC Testing Relating to Advanced Nuclear Fuel for BWR Correlation for ATRIUM-10 & ATRIUM-9 Fuel Designs.List of Attendess Encl

ML20211A135
Person / Time
Issue date:	09/18/1997
From:	Wang E NRC (Affiliation Not Assigned)
To:	Essig T NRC (Affiliation Not Assigned)
References
NUDOCS 9709240131
Download: ML20211A135 (100)

Text

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NUCLEAR REGULATORY COMMISSION WASHINGTON. D.O. 30eeH001

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September 18, 1997

~ MEMORANDUM.TO: Thomas H. Essig. Acting Chief Generic Issues And Environmental Project Branch Division of Reactor Program Management Nuclear Reactor Regulation FROM:

Egan Wang, Reactor Engineer Generic Issues And Environmental Project Branch Division of Reactor Program Management Nuclear Reactor Regulation

SUMMARY

OF MEETING BETWEEN NRC AND SIEMENS POWER CORPORATION STAFF On July 8,1997. NRC and Siemens Power Corporation (SPC) staff met in Rockville. MD to discuss the status of-SPC testing related to the Advanced-Nuclear Fuels for boiling water reactors (ANFB) correlation' for ATRIUM *-10 and ATRIUMS-9 fuel designs. Also present were representatives from Commonwealth Edison and Pennsylvania Power and Light. These fuel designs are being used or will be used in Pennsylvania Power & Light and Commonwealth Edison nuclear plants. Attachment 1 a list of-people who attended this meeting and. is a set of slides that was discussed during the meeting.

3 The purpose of the meeting was to present dryout testing plans and ANFB recorrelation plans for the ATRIUM-10.

These plans'are intended to address t

j related issues raised during NRC Inspection 99900081/97-01.

It was noted that t

based on completion of testing for the ATRIUM *-10 fuel. SPC plans to submit a request for approval of a refined ANFB correlation by November 1,1997 to support Susquehanna Steam Electric Station operations. Also discussed were a w*5

-the issues regarding flow bias and magnitude of local peaking factor to be used in the ATRIUM-10 dryout tests. NRC indicated the use of-local peaking factors in fuel cycle designs greater than the maximum tested, would require NRC review, SPC stated ATRIUM-98 dryout tests were planned to extend the range of conditions.found to be inadequate during an NRC inspection and documented in Inspection 99900081/97-01. These plans include upskew and downskew tests, and include a Statistical Design of Experiments to assure a satisfactory range of_ test data is obtained. The tests results are to the

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=-2 September 18, 1997 support the Additive Constant uncertainties to be applied with the ANFB CHF correlation in safety limit analyses for ATRIUM-9* fuel.

A portion vf the discussion material was proprietary. :

List of attendees -

Attachnent 2:

Set of non-proprietary slides cc w/atts: Mr. H. D. Curet. Manager Product Licensing Siemens Power Corporation 2101 Horn Rapids Road P. O. Box 130 Richland WA 99352-0130 t

I

Tj Essig:

-2 September 18, 1997=

-if obtained..The tests results are to the support'the Additive Constant uncertainties to be applied with _the ANFB CHF correlation in safety limit analyses-for ATRIUH 9' fuel.

A portion.of the discussion material was proprietary. :

List of attendees : Set of non-proprietary slides cc w/atts: Mr. H. D. Curet. Manager Product Licensing

e Siemens Power Corporation 2101 Horn Rapids Road P. O. Box 130 Richland WA 99352-0130 DISTRIBUTION:

See attached page Document name: 970708. SUM *See Previous Concurrences-k 0FC PGEB /

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NAME EWang:[w FAkstulewicz TCollins TEssig ' d DATE 09/ /97 09/09/97 09/17/97 09/f%/97

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3 DISTRIBUTION:.Mtg. Sumary of. July 8 Meeting with Siemens Power Corporation Dated September 18, 1997 HARD COPY CentrahEile Public PGEB r/f.

E. Wang A. Attard T._ Huang L. Phillips T.

Collins OGC ACRS E-Pall

~F. Miraglia R. Zimerman G. Holahan B. Sheron J. Roe D.- Matthews F, Akstulewicz E. Kendrick S. Richards

a List of Attendees Name Organization Phone Number-Keheley, Tom SPC (509)-375-8702

~

Curet. Don SPC l(509)-375-8563 Colllingham, Richard

-SPC

~(509)-375-8392 Carew, John BNL (516)-344-2595 Kulick, John PP&L (610) 774-7957 Spadaro. John PP&L (610)-774-7992 Rocscioli, Tony PP&L (610)-774-4019 Benes, Gary

.Can Ed (630)-663-7282 Pallotta Adelmo com Ed (630)-663-3021 Kendrick, Ed NRC (301)-415-2891 Attard, Tony NRC (301)-415-2876 Huang, Tai NRC (301)-415-2867 Phillips. Larry NRC (301)-415-3232 Wang, Egan NRC (301)-415-1076 Poslusny, Chet NRC (301)-415-1402 Skay, Donna NRC (301)-415-1322 Lyons Jim NRC (301)-415-2895

SIEMENS l

ANFB Presentation Outline i

Purpose:

Present ANFB ATRIUM-10 recorrelation and dryout testing plans to address related NRC concerns from inspection f

. Refine ANFB correlation for ATRIUM-10 to replace interim l

model

. ATRIUM-9 testing over larger range of conditions to support uncertainties Outline:

Introduction Don Curet ANFB recorrelation effort Richard Collingham Testing Efforts Tom Keheley Summary / Feedback Don Curet /All Siemens Power Corporation

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SIEMENS i

NRC ANFB Inspection Concerns Addressed for l

ATRIUM-10 l

l Flow bias'in ANFB predictions of ATRIUM-10 dryout data Application of local peaking factor 4

• /

i

SIEMENS ANFB Recorrelation for ATRIUM-10 Outline -

l Richard Collingham i

i j

Schedule Scope of recorrelation effort i

Refinement of ANFB 1

. Scope of additional ATRIUM-10 testing Local peaking Report content

.V&V 4

i

. Range of applicability Test hardware

• Siemens Power Corporation 2

SIEMENS i

l.

L ANFB Recorrelation Scope j

Recorrelation effort will support Susquehanna Units:

l

. Interim approval limited to first cycle of operation in Susquehanna Units i

. Desired to have approved before end of first cycle because conservatism in interim methodology may limit l

operation near end of cycle Plan to submit by November 1,1997 Approval on or before May 1,1998 in order to support i

Susquehanna units cycle operations l

Meeting (s) with NRC are planned, when appropriate, to assure no surprises that would prevent meeting this schedule Siemens Power Corporation

SIEMENS ANFB Recorrelation Scope

. Primary goal is to refine the ANFB correlation to remove

' flow bias and address peaking concerns (axial and local? for the ATRIUM-10 fuel The current plan approach

. The ANFB recorrelation is expected to be limited to l

ATRIUM-10 fuel

. The basic form of the correlation will be maintained

.. Flow refinements made within the major terms of A, B

&C

. Address PLFR effects in local enthalpy C term

. Axial effects adjustment made within the separate axial factor.

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SIEMENS l

l ANFB Recorrelation Scope (Continued?

. Local peaking will be addressed by the uncertainty j

approach used in the Interim model until addressed by l

a supplement containing results of local peaking test l.

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SIEMENS ANFB Correlation Form

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SIEMENS ANFB/ ATRIUM-10 Local Peaking Local peaking test schedule dictated by peak rod availability

. Test scheduled for late fall

. Plan to submit supplement by end of January,1998-Purpose is to extend the range of local peaking to [

]

. For uncontrolled assembly

. For plane of dryout in controlled assembly

. Explicit up to [

]

For [

] treat by an uncertainty approach Siemens Power Corporation s

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SIEMENS ANFB Recorrelation Report Correlation refinements Correlation data comparisons to independent parameters Demonstrate no significant parameter biases V&V using subset of data that is set aside for V&V Address range of applicability

. Thermal hydraulic parameters

. Fuel design parameters

. Local peaking i

. Define analysis methodology for conservatively performing analyses outside range of test conditions si

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SIEMENS 4

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Test Hardware 2

Primary purpose of additional tests is to obtain the impact of axial and local peaking. effects Thus use same test hardware as in earlier series t

. Same Karlstein facility & test procedures

. Same Upskew heater rods

- Same spacers New heater rods required for higher local peaking i

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l NRC ANFB Inspection Concerns Addressed for ATRIUM-10 l

Flow bias addressed i

. Explicitly in correlation refinement Axial effects 1

Two more Upskew tests (three totalD Contingency testing f

. One transient test with Upskew l

Local peaking i

. New cosine test: [

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i

. Interim uncertainty approach until supplement submittal i

i with test results 1

Range of conditions will be addressed

. Action to be taken when outside range

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SIEMENS Dryout Testing in Support of ATRIUM Designs l

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Thomas H. Keheley i

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l Dryout Testing in Support 'f ATRIUM

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Design L

i In September of 1992, Siemens performed dry out tests on the ATRIUM

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. The dry out tests were performed on a bundle with a l

cosine shaped axial power profile and [

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l patterns.

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. A total of [

] were used to develop Additive Constants.

. Pressurization and flow decrease transients were performed on one peaking pattern as part of the testing program.

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SIEMENS Dryout Testing in Support of ATRIUM 10 Design - Rods Peaked During the Tests i

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Dryout Testing in Support of ATRIUM

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Design l

. Siemens began additional dryout tests on the

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ATRIUM

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. One:

] and two [

] were performed.

. Increased the ATRIUM

-10 data base to [

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Because this test series showed [

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. Statistical Design of Experiments was implemented to l

assure an adequate range of testing parameters.

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Dryout Testing in Support of ATRIUM

-10 Design i

Dryout testing on a particular fuel design is an experiment with three independent variables: pressure, i

inlet subcooling, and flow.

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. Using a. Computing Table for Analysis of 2P Factorial i

Designs it can be shown that the order of importance l

of the independent variables for dryout tests are mass i

i flow, inlet subcooling, and pressure.

. Using this information, the test matrix is set up to test the extremes of'the pressure range while concentrating i

the majority of the data at operating pressure.and a full range of flow.

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i Dryout Testing in Support of ATRIUM 10 i

Design - STS-29.2 1

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - STS -29.2 Mass Flow Pressure (bar) kg/sec 41 55 69 83 97 18.90 15.75 12.60 9.45 6.30 3.15 2.20

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SIEMENS i

Dryout Testing in Support of ATRIUM

-10 Design - STS-29.2 P re s s u re in le t B u n d le Flo w T ria l (B a r)

S u b c o o lin g (k g /s e c )

(k J /k g )

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41 23 6.30 2

97 23 6.30 3

41 184 6.30 4

97 184 6.30 5

41 23 12.60 6

97 23 12.60 7

41 184 1 2.6'O 8

97 184 12.60 4

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Dryout Testing in Support of ATRIUM

-10 Design - STS-29.2 Run 1 Run 2 Run 3 Run 4 3

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i Testing to Date l

Completed an ATRIUM-10 test on June 27

. Upskew Narrow corner 1

. Rods peaked were next to PLFR 4

Rods peaked were in interior row

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Results consistent with November Upskew test in wide corner t

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SIEMENS Testing to Date (Continued)

. Preliminary cycle analysis indicates that rods tested will not be limiting in first cycle of operation

. Evaluation continues i

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Dryout Testing in Support of ATRIUM

-10 Design - STS-29.3 L

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-10 Design - STS-29.3 Mass Pressure (bar)

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Dryout Testing in Support of ATRIUM

-10 Design - STS-29.3 Pressure inlet Bundle Trial (Bar)

Subcooling Flow (kJ/kg)

(kg/sec) 1 41 23 2.20 i

2 97 23 2.20 j

3 41 184 2.20 4

97 184 2.20 5

41 23 18.90 6

97 23 18.90 7

41 184 18.90 8

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Dryout Testing in Support of ATRIUM

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Design - STS29.3 i

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ATRIUM

-10 Dryout Test l

at Local Peaking Factor > 1.3 i

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. The rod local peaking factor will be set at about 1.4 due to physical limitations of the rod design.

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ATRIUM

-10 rods are 10.05 mm in outer diameter

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Thermocouple leads need 3.5 mm clearance Since local peaking factor is set by rod wall thickness, the power factor is limited to [

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. In the cosine tests, STS-17.4 and STS-17.5 drove. rod i

80 into dryout with a local peaking of [

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ATRIUM-10 Dryout Test j

at Local Peaking Factor > 1.3 j

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. This test will repeat that peaking pattern with a local i

peaking of about [

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Experiments at a full range of flows.

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i Contingency Tests for ATRIUM

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dryout tests and one cosine local peaking test.

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the necessity for additional tests.

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Additional peaking patterns will be performed if j

necessary to support the correlation work (contingency plan).

Hardware, test facility, schedule, and budget are i

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ATRIUM-10 Upskew Transient Test l

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. The current data base contains transient tests l

performed on one cosine axial power profile.

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. The current plan is to perform an additional transient j

test on an upskew axial power profile.

. The peaking pattern will be chosen based on the results of the steady state upskew tests.

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-10 Design 4

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Dryout Testing in Support of ATRIUM

-10 Design

. At the end of the current testing program the data base l

for the ATRIUM-10 fuel design will contain at least [

]

1 l

peaking patterns.

.[

] cosine axial power profiles j

.[

] downskew axial power profiles i

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.[

] upskew axial power profiles L

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. Transient tests will have. been performed on cosine and i

j upskew axial power profiles.

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SIEMENS Dryout Testing in Support of ATRIUM

-9 Designs

. The. ATRIUM

-9 designs are 9x9 arrays with an internal water channel that replaces the central 3x3 rod array.

. The ATRIUM-9 designs have a total of [

] dryout test data points

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-9B alone has [

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Dryout Testing in Support of ATRIUM 9B l

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-9 B Design - Cosine Test Matrix 1

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Dryout Testing in Support of ATRIUM

-9 B l

Design i

. The cosine test peaking pattern will be replicated with f

upskew and downskew axial power profile tests.

. The test matrix shall be set up using Statistical Design of Experiments.

2

. These tests will add about another [

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9B data base, for a total of [

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Summary j

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The testing and ANFB correlation revision plan presented j

reflects a substantial upgrade in SPCs Dryout methodology:

. Statistical Design of Experiments used to perform l

testing to achieve a higher quality ATRIUM-9B and j

ATRIUM-10 data base t

Testing range for local peaking range increased in l

l ATRIUM-10 i

. Recorrelation to remove flow bias in ATRIUM-10 l

predictions j

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k UNITED STATES p

s NUCLEAR REGULATORY COMMISSION k

WASHINGTON. D.C. 30006 4001 September 18, 1997 HEMORANDUM T0: Thomas H. Essig. Acting Chief Generic Issues And Environmental ProjectBranch Division of Reactor Program Management Nuclear Reactor Regulation i

FROM:

Egan Wang. Reactor Engineer Generic issues And Environmental Project Branch Division of Reactor Program Management Nuclear Reactor Regulation

SUMMARY

OF HEETING BETWE:N NRC AND SIEHENS POWER CORPORATION STAFF On July 8. 1997, NRC and Siemens Power Corporation (SPC) staff met in Rockville. HD to discuss the status of SPC testing related to the Advanced Nuclear fuels for boiling water reactors (ANFB) correlation for ATRIUM *-10 and ATRIUH' 9 fuel designs. Also present were representatives from Commonwealth Edison and Pennsylvania Power and Light. These fuel designs are being used or will be used in Pennsylvania Power & Light and Commonwealth Edison nuclear plants. Attachment 1 a list of people who attended this meeting and is a set of slides that was discussed during the meeting.

The purpose of the meeting was to present dryout testing plans and ANFB recorrelation plans for the ATRIUH-10. These plans are intended to address related issues raised during NRC Inspection 99900081/97-01.

It was noted that based on completion of testing for the ATRIUH' 10 fuel. SPr. plans to submit a request for approval of a refined ANFB correlation by November 1.1997 to support Susquehanna Steam Electric Station operations. Also discussed were the issues regarding flow bias and magnitude of local peaking factor to be used in the ATRIUH 10 dryout tests. NRC indicated the use of local peaking factors in fuel cycle designs greater than the maximum tested, would require NRC review.

SPC_ stated ATRIUH 98 dryout tests were planned to extend the range of conditions found to be inadequate during an NRC inspection and documented in Inspection 99900081/97-01. These plans include upskew and downskew tests, and include a Statistical Design of Experiments to assure a satisfactory range of test data is obtained. The tests results are to the l

p o % Is $l-H W '

T. Essig 2

September 18, 1997 I

support the Additive Constant uncertainties to be applied with the ANFB CHF correlation in safety limit analyses for ATRIUH 9* fuel.

A portion of the discussion material was proprietary. :

List of attendees :

Set of non proprietary slides cc w/atts:

Mr. H. D. Curet. Fanager Product Licensing Siemens Power Corporation 2101 Horn Rapids Road P. O. Box 130 Richland. WA 99352 0130 S

4 4

T. 'Essig

-2 September 18, 1997 l

f is obtained. The tests results are to the support the Additive Constant uncertainties to be applied with the ANFB CHF correlation in safety limit analyses for ATRIUH 9* fuel.

A portion of the discussion material was proprietary.

List of attendees :

Set of non-proprietary slides

- cc w/atts: Mr. H. D. Curet Manager Product Licensing Siemens-Power Corporation 2101 Horn Rapids Road P. O. Box 130 Richland. WA 99352 0130 DISTRIBUTION:

See attached page Document name: 970708. SUM *See Previous Concurrences k

SC:PGEB*

C:SRXB*

(A)C:PGEBn 0FC PGEB /

NAME EWang:[wV FAkstulewicz Trollins TEssig #d DATE 09/ /97 09/09/97 09/17/97 09/(%/97 0FFICIAL RECORD COPY 6

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,s DISTRIBUTION: Mtg. Summary of July 8 Heeting with Siemens Power Corporation Dated September 18, 1997 HARD COPY Central File

'Public' PGEB r/f E. Wang A. Attard T. Huang L. Phillips T.

Collins OGC ACRS E-MAIL F. Miraglia R. Zimmerman G. Holahan B. Sheron J. Roe D. Matthews-F. Akstulewicz E. Kendrick S. Richards

,e -

List of Attendees Name Organization Phone Number Keheley. Tom SPC (509)-375-8702 Curet. Don SPC (509)-375-8563 Colllingham. Richard SPC (509) 375-8392 Carew John BNL (516) 344-2595 Kulick. John PP&L (610)-774-7957 Spadaro John PP&L (610)-774-7992 Rocscioli. Tony PP&L

. (610) 774 4019 Benes, Gary Com Ed (630) 663 7282 Pallotta Adelno com Ed (630) 663 3021 Kendrick Ed NRC (301)-415 2891 Attard.-Tony NRC (301) 415-2876 l

Huang. Tai NRC (301) 415-2867 Phillips. Larry NRC (301)-415 3232 Wang. Egan NRC (301) 415-1076 Poslusny Chet NRC (301) 415 1402 Skay. Donna NRC (301) 415-1322 Lyons Jim NRC (301)-415-2895 l

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SIEMENS ANFB Presentation Outline Purpose Present ANFB ATRIUM-10 recorrelation and dryout testing plans to address related NRC concerns from inspection Refine ANFB correlation for ATRIUM-10 to replace interim model

. ATRIUM-9 testing over larger range of conditions to support uncertainties Outlian:

introduction Don Curet ANFB recorre!ation effort Richard Collingham Testing Efforts Tom Keheley Summary /Feeriback Don Curet /All i

Siemens Power Corporatior W

DYEeMY$SaW

SIEMENS NRC ANFB Inspection Concerns Addressed for ATRIUM-10 Flow bias in ANFB predictions of ATRIUM-10 dryout data Application of local peaking factor l

I h em Po w W a h

SIEMErJS ANFB Recorrelation for ATRIUM-10 Outline -

Richard Collingham Schedule l

Scope of recorrelation effort

. Refinement of ANFB Scope of additional ATRIUM-10 testing

. Local peaking Report content

.V&V

. Range of applicability l

l Test hardware l

7/3/97

+

Siemens Power Corporation

SIEMENS ANFB Recorrelation Scope Recorrelation effort will support Susquehanna Units:

. Interim approval limited to first cycle of operation in Susquehanna Units l

. Desired to have approved before end of first cycle because conservatism in interim methodology may limit operation near end of cycle Plan to submit by November 1,1997 q

Approval on or before May 1,1998 in order to support Susquehanna units cycle operations Meeting (s) with NRC are planned, when appropriate, to assure no surprises that would prevent meeting this schedule

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i l

EIEMENS l

l ANFB Recorrelation Scope ll Primary goal is to refine the ANFB correlation to remove flow bias and address peaking concerns (axial and local) for the ATRIUM-10 fuel i

The current plan approach i

. The ANFB recorrelation is expected to be limited to l

ATRIUM-10 fuel

. The basic form of the correlation will be maintained

. Flow refinements made within the major terms of A, B l

&C

. Address PLFR effects in local enthalpy C term l

. Axial effects adjustment made within the separate axial factor

SIEMENS ANFB Recorrelation Scope (Continued) l l

. Local peaking will be addressed by the uncertainty.

L approach used in the Interim model until addressed by a supplement containing results of local peaking test I

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SIEMENS ANFB Correlation Form i

,[.

Seemens Power Corporation 7

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1 SIEMENS l

ANFB/ ATRIUM-10 Local Peaking l

Local peaking test schedule dictated by peak rod availability i

. Test scheduled for late fall

. Plan to submit supplement by end of January,1998 l

Purpose is to extend the range of local peaking to [

]

. For uncontrolled assembly i

. For plane of dryout in controlled assembly

. Explicit up to [

]

. For [

] treat by an uncertainty approach l.,

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SIEMENS ANFB Recorrelation Report Correlation refinements Correlation data comparisons to independent parameters Demonstrate no significant parameter biases V&V using subset of data that is set aside for V&V Address range of applicability

. Thermal. hydraulic. parameters

. Fuel design parameters

. Local. peaking

. Define analysis methodology for conservatively-performing analyses outside range of test conditions

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l Test Hardware i

i Primary purpose of additional tests is to obtain the L

impact of axial and local peaking effects Thus use same test hardware as in earlier series

. Same Karlstein facility & test procedures

. Same Upskew heater rods

. Same spacers New heater rods required for higher local peaking i

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l SIEMENS l

l NRC ANFB Inspection Concerns Addressed for l

ATRIUM-10 Flow bias addressed l

Explicitly in correlation refinement Axial effects I

. Two more Upskew tests (three total) l

. Contingency testing j

. One transient test with Upskew Local peaking l

. New cosine test: [

]

. Interim uncertainty approach until supplement submittal with test results Range of conditions will be addressed

. Action to be taken when outside range

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SIEMENS i

l Dryout Testing in Support of ATRIUM l

Designs i

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Thomas H. Keheley

'1 Staff Engineer, Safety Analysis Methods o

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SIEMENS Dryout Testing in Support of ATRIUM

-10 l

Design In September of 1992, Siemens performed dry out f

tests on the ATRIUM

-10 assembly (test series STS-17D.

The dry out tests were performed on a bundle with a f

I cosine shaped axial power profile and [

] local peaking patterns.

f A total of [

] were used to develop Additive l

Constants.

Pressurization and flow decrease transients were performed on one peaking pattern as part of the testing program.

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - Rods Peaked During the Tests

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-10 Design - Rods Experiencing Dryout 4

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-10 Test Matrix (STS-17 Cosine Series?

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design

. Siemens began additional dryout tests on the ATRIUM

-10 bundle during the Summer of 1996.

. One [

] and two [

] were performed.

. Increased the ATRIUM

-10 data base to [

].

. Because this test series showed [

] additional testing-was scheduled for use in CHF correlation development.

j Statistical Design of Experiments was implemented to assure an adequate range of testing parameters.

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SIEMENS l

Dryout Testing in Support of ATRIUM

-10 Design i

1

. Dryout testing on a particular fuel design is an experiment with three independent variables: pressure, inlet subcooling, and flow.

j

. Using a Computing Table for Analysis of 2P Factorial

[

Designs it can be shown that the order of importance of the independent variables for dryout tests are mass l

flow, inlet subcooling, and pressure.

(

. Using this information, the test matrix is set up to test I

the extremes of the pressure range while concentrating t

the majority of the data at operating pressure and a full range of flow.

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - STS-29.2 1

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - STS -29.2 t

Mass Flow I

Pressure (bar) kg/sec 41 55 69 83 97 i

18.90

.P 15.75 12.60 9.45 e

6.30 3.15 e

2.20 e

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - STS-29.2 P re s s u re in le t B u n d le Flo w T ria l (B a r)

S u b c o o lin g (k g /s e c )

(k J /k g )

1 41 23 6.30 2

97 23 6.30 3

41 184 6.30 4

97 184 6.30' 5

41 23 12.60 6

97 23 1 2.6.0 7

41 184 12.60 8

97 184 12.60 21 g

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design - STS-29.2 l-Run 1 Run 2 Run 3 Run 4 3

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SIEMENS Testing to Date Completed an ATRIUM-10 test on June 27

. Upskew

. Narrow corner Rods peaked were next to PLFR Rods peaked were in interior row Results consistent with November Upskew test in wide corner 1

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Testing to Date (Continued?

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i Preliminary cycle analysis indicates that rods tested will not be limiting in first cycle of operation

. Evaluation continues

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SIEMENS Dryout Testing in Support of ATRIUM 10 Design - STS-29.3 O

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SIEMENS I

Dryout Testing in Support of ATRIUM

-10 Design - STS-29.3 Mass Pressure (bar)

Flo w kg/sec 41 55 69 83 97 18.90 15.75 e

12.60 e

9.45 e

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1 SIEMENS Dryout Testing in Support of ATRIUM.

- 10.

j Design - STS-29,3 l

l Pressure Inlet Bundle Trial (Bar)

Subcooling Flow (kJ/kg)

(kg/sec) 1 41 23 2.20 2

97 23 2.20 3

41 184 2.20 4

97 184 2.20 5

41 23 18.90 6

97 23 18.90 7

41 184 18.90 8

97 184 18.90

SIEMENS l

Dryout Testing in Support of ATRIUM

-10 l

Design - STS29.3 l

Run 1 Run 2 Run 3 Run 4 3

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SIEMENS ATRIUM

-10 Dryout Test at Local Peaking Factor > 1.3

. The rod local peaking factor will be set at about 1.4 due to physical limitations of the rod design.

l

. ATRIUM

-10 rods are 10.05 mm in outer diameter Power leads are 5 mm in diameter 4

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. Thermocouple leads need 3.5 mm clearance

. Since local peaking factor is set by rod wall thickness, the power factor is limited to [

]

. In the cosine tests, STS-17.4 and STS-17.5 drove rod i

80 into dryout with a local peaking of [

].

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SIEMENS ATRIUM-10 Dryout Test at Local Peaking Factor > 1.3 This test will repeat that peaking pattern with a local peaking of about [

].

. The dryout test will be performed with a cosine axial power shape.

1

. The test matrix will utilize the Statistical Design of Experiments at a full range of flows.

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l ATRIUM-10 Dryout Test j

at Local Peaking Factor [

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SIEMENS l

l Contingency Tests for ATRIUM

-10 i

l

. The current plan is to run two upskew steady state j

dryout tests and one cosine local peaking test.

l

. The results of the upskew dryout tests will determine l

the necessity for additional tests.

. Additional peaking patterns will be performed if i

l necessary to support the correlation. work (contingency plan).

. Hardware, test facility, schedule, and budget are available to support additional testing.

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uw Seemens Power Corporation u

4 i

t SIEMENS i

l ATRIUM-10 Upskew Transient Test i

4

. The current data base contains transient tests performed on one cosine axial power profile.

. The current plan is to perform an additional transient test on an upskew axial power profile.

l

. The peaking pattern will be chosen based on the

[

results of the steady state upskew tests.

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SIEMENS Dryout Testing in Support of ATRIUM

-10 Design i

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' SIEMENS I

l Dryout Testing in Support of ATRIU.M

-10 l

- Design l

. At the end of the current testing program the data base l

for the ATRIUM-10 fuel design will contain at least [

]

l peaking patterns.

.[

.] cosine axial power profiles l

.-[

] downskew axial power profiles 1

.[

] upskew axial power profiles

. Transient tests will have been performed on cosine and upskew axial power profiles.

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-SIEMENS l

Dryout Testing in Support of ATRIUM

-9 Designs r

. The ATRIUM

-9 designs are 9x9 arrays with an internal water channel that replaces the central 3x3 rod array.

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. The ATRIUM-9 designs have a total of [

] dryout test l

data points ATRIUM

-9B alone has [

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-9 B Design - Rods Peaked During Dryout Tests s

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-9B l

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-9B Design 4

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Dryout Testing in Support of ATRIUM 9B Design - Next Peaking Pattern 4

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SIEMENS Dryout Testing in Support of ATRIUM 9B De' sign Cosine Test Matrix b

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SIEMENS i

Dryout Testing in Support of ATRIUM

-9 B l

Design j

i i

. The cosine test peaking pattern will be replicated with upskew and downskew axial power. profile tests.

. The test matrix shall be set up using Statistical Design of Experiments.

. These tests will add about another [

] to the ATRIUM-9B data base, for a total of [

]

t

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i-sisusus i

L Summary i-The testing and ANFB correlation revision plan presented j

reflects a substantial ups,cade in SPCs Dryout i

methodology:

. Statistical Design of Experiments used to perform L

testing to achieve a higher quality ATRIUM-9B and ATRIUM-10 data base

. Testing range for local peaking range increased in ATRIUM-10

. Recorrelation to remove flow bias in ATRIUM-10 predictions l

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