ML20059H690

Forwards Response to NRC 930915 Request for Addl Info on Simplified BWR Test Program

ML20059H690
Person / Time
Site:	05200004
Issue date:	01/17/1994
From:	Leatherman J GENERAL ELECTRIC CO.
To:	Borchardt R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
MFN-005-94, MFN-5-94, NUDOCS 9401310109
Download: ML20059H690 (51)

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ceccaoew.c cwww 1:5 Cs?'mer Averrue. Set.k>se, t'A 95125 January 17,1994 MFN No. 005-94 Docket STN 52-004 Document Control Desi.

U.S. Nuclear Regulatory 1'ommission Washington DC 20555 Attention: Richard W. Borchardt, Director Standardization Project Directorate

Subject:

NRC Requests for Additional Information (RAls) on the Simplified Boiling Water Reactor (SBWR) Design

Reference:

Transmittal of Requests for Additional Information (RAls) for the SBWR Design, Letter from M. Malloy to P. W. Marriott dated September 15,19QA The Reference letter requested additionalinformation regarding the SBWR test program. In fulfillment of this request, GE is submitting responses to RAls 900.27 - 900.45.

Sincerely, t * ' f' & 0

. E. Leatherman SBWR Certification Manager MC-781, (408)925-2023 cc: M. Malloy, Project Manager (NRC) (2 attachments)

F. W. Hasselberg, Project Manager (NRC) (1 attachment) 240113 ImAwe l

1 9401310109 940117 f .h PDR ADOCK 05200004 G 8 A PDR [C / 1

.- - y RAI Number: 900.27  :

Question:  !

Page 9, paragraph 4.1.3.1. The test platform for the PCC is designed to provide helium  !

at a suflicient rate to fill the PCC in 15 minutes. Does this provide the test platform with 1 sufIicient capacity to bound DBA conditions for hydrogen generation or severe accident conditions for hydrogen generation? (The staff recognizes that this is a system sizing criteria only, not a matrix test condition.) . )

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-l GE Response:  :

The helium flow rate specified for the PANTHERS PCC test is sufficient to bound the DBA and severe accident hydrogen generation with respect to the concentration of  !

low density non condensabic gas present in the condenser..The planned tests .with  !

helium are quasi steady-state conditions for which the heat transfer rate will be  ;

determined as a function of the total volume of noncondensabic gas (helium or -

helium / air mixture ) in the conderser. ,

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IW Number: 900.28 Question:

Page 57. Iraes the helium flow rate to be tested bound both DBA and severe accident conditions? Provide a revised test matrix. (The test matrix previously provided to the staff offers no information on the helium concentrations to be tested. The staff notes that the PCCS should be tested with sufficient helium to demonstrate PCCS performance in a severe accident environment, as well as DBA conditions.)

GE Response:

The flow rate of the helium is not significant in these tests since they are intended to measure the PCC performance at steady conditions with varying amounts of a helium / air mixture trapped in the condenser. The tests are planned to be performed as described in Paragraph 5.2.8 of the GE Document 23A6999. The PCC will be initially purged of air and the vent line will be closed off. The initial flow will be pure steam at the flow rates speciGrd on Page 57 (Test Conditions 75 -_78). The noncondensable gas mixture will be bled into the PCC inlet at a very low (but measured) rate. Since the vent line is closed, it is expected that the noncondensable gas will accumulate in the condenser, reduce the condensation rate and thus cause the inlet pressure to increase. The helium concentrations of the inlet noncondensable gas mixture to be used in Test Conditions 73 - 78 are 0,100, and 23%

by mass. The 23% value is an air to helium mass ratio of 3.4 as shown on page 57. This ratio pro ides the same mixture density as the radiolytic decomposition of water.

RAI Number: 900.29 Quesdon:

Page 33, paragraph 5.1.1.1. The specificat.on lists the specific thermal-hydraulic test objectives. One of the objectives listed under item C is to "... Confirm that heat transfer and flow rates are stable and without large fluctuations." GIRAFFE test data has shown that under actual accident conditions, the heat transfer rates would not be " stable,"

rather dicy would be oscillatory due to the presence of noncondensable gases cycling through the PCCS and vacuum breakers. The PANTHERS test seems trbe built around setting up a constant flow rate at a constant steam /noncondensable gas ratio.

While these tests are certainly important to confirm heat transfer performance, they do not demonstrate PCCS performance under anticipated containment conditions or improve the TRACG code's ability to model post-accident PCCS performance. Explain why these tests should not be combined with transient tests to proside a complete picture on PCCS performance. (It is the staffs opinion that GE should provide some means of simulating the containment under accident conditions and to provide flows which are more representative of varying steam / gas ratios, which would be present in an actual containment under post-accident conditions. This would provide better data on anticipated PCCS performance.)

GE Response:

The PANTHERS PCC performance tests are steady-state tests of the condenser at operating conditions which cover the range expected to occur during the long term containment cooling transient following a LOCA or severe accident scenario. The objective 5.1.1.1 c refers to stable heat transfer and flow rates for the condenser when the inlet conditions are stable and constant.

While it is true that the GIRAFFE test at times demonstrated oscillatory behasior for the overall containment response, including oscillations in the PCC heat rejection ,

rate, GE believes that the heat transfer process occurring within the heat exchanger is a quasi-steady process. GIRAFFE overall PCC heat rejection rates vary because of the  ;

buildup and purging of noncondensables within the heat exchanger, with the process having a period on the order of 100 sec. This process may be idealized as a heat -

transfer process which turns off and on in an oscillatory manner, because of the composition of the fluid being condensed within the PCC heat exchanger. The fluid composition is effected by the inlet conditions and whether or not the vent is discharging to the suppression pool.

The efTect of changing the noncondensable fraction of the fluid within the heat exchanger will be to change the heat transfer coeflicient on the inside of the PCC heat exchanger tubes. A time constant for '.he overall heat transfer to reach equilibrium may be estimated by dividing the heat capacity per unit area of the PCC heat exchanger tubes by the limiting heat transfer coefficient. This is, of course, a subjective calculation, depending upon the heat transfer cocIIicients and initial i conditions, but GE estimates that the time constant is on the order of a few tenths of a l second to a rew seconds. In any case, the time constant for the local heat transfer process is less than the overall containment response time constant by at 1 cast one, and possibly two orders of magnitude.

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SBWR - transient containment response is predicted by the TRACG program , which ,

calculates the inside tube heat transfer coefficient for condensation using the  ;

p' instantaneous composition of the mixture and a correlation resulting from the UCB and MIT university tests. P,oth the UCB'and MIT university tests were performed in a steady state manner. The PANTHERS steady state heat exchanger tests are consistent with this philosophy. On the basis of the time constants noted in the previous paragraph, the assumption of quasi +teady. heat transfer performance should  !

be valid. TRACG does a good job of predicting the GIRAFFE results using the quasi-steady heat transfer model, and the method's adequacy will be further validated with' ,

the PANDA transient testing. GE firmly believes that steady state testing in {

PANTHERS is the proper, consistent approach.

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RAI Number: 900.30 Question:

Provide a copy of the TRACG input deck on diskette for the staffs use in verifying the .

REIAP5 and CONTAIN codes (which will be used for independent code verification- ,

in the staffs review of the SSAR). ,

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The TRACG input deck for PANTHERS PCC system is still mde:;sing some  ;

modifications. GE will provide a copy when the deck is complete and has been ,

verified against the as-built drawings for the test facility. l l

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RAI Number: 900.31 i

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Page 7, paragraph 3.6. Provide the complete Test Plan and Procedures Document (TP&P) prepared in accordance with this requirement. '[The one previously prosided  ;

to the staff was incomplete (missing a large number of sections, figures and tables.)

GE has not yet provided detailed test procedures to the staff.]

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GE Response: ,

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The PANTHERS PCC Test Plan and Procedures document, rev. O, was provided

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previously in response to RAI 950.23, letter number MFN 167-93, dated October 19, . >

1993. This revision is the most recent and was issued by SIET on September 13,1993.

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4 RAI Number: 900.32  ;

Question: l l

Page 12, paragraph 4.1.4.2. What is the basis for selecting the tubes in which the temperature sensors are to located?

GE Response:

It was necessary to limit the number of tubes instrumented with wall temperature ,

sensors to five for several reasons. Given this constraint on the number of tubes, the locations of the instrumented tubes within the tube bundle were selected to represent the various external flow conditions which may be effected by adjacent tubes. The conditions represented can be described as follows:

TUBE LOCATION REPRESENTING:

Al Corner tube, adjacent to only two other tubes.

A5 End of the header, adjacent to three tubes. ,

R1 Inside edge of header, adjacent to four tubes.

R8 Outside edge of header, similar to R1 but flow pattern possibly different due to pool wall.

R5 Center of the bundle, adjacent to six tubes.

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RAI Number: 900.33 ,

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- Question:

Provide a detailed description of how the condensate and noncondensables are being separated. From the schematic shown on Page 13,it appears that the noncondensables ,

are vented from the top of the water box. Is this the case? ,

GE Response: l 1

The response to 900.56 contains a figure which shows_ the PCC drain and vent line I connection to the lower header in sufIicient detail to understand how the condensate and the noncondensibles are being separated. The vent and drain lines are concentric

- at the bottom of the lower header. The vent line extends to the upper part of the lower header. Separation of the condensate and noncondensables is by gravity. The 4 noncondensibles enter the vent line near the top of the header and the condensate enters the drain line at the bottom of the header. A deflector at the entrance to the vent  :

line prevents condensate from the center tubes from falling into the vent. .l i

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l RAI Number: 900.34 Question: j Pages 10 and 11, paragraphs 4.1.3.3 and 4.1.3.4. The specification requires that the vent tank be arranged such that the test can be conducted with the vent line either i submerged or not submerged. The condensate drain tank must have the ability to test with varying water levels. The test objectives sections on Pages 5 and 33 do not clearly  ;

specify any test objectives which would require these characteristics. Are there any test objectives that are not specified on Pages 5 and 33? If so, what are they? What are the objectives associated with the special drain and vent tank capabilities cited above? ,

Provide revised test matrices that include data regarding what water levels will be maintained in the condensate tank and what the vent line submergence will be and I define vent tank and condensate tank pressures and temperatures. Inlet steam pressures in the matrices are given as very broad ranges. Provide more specific test conditions. The staff recognizes that some latitude is needed in the range of pressures,  ;

but the ranges in the test matrices are excessive. How can any pre-test predictions bc .

performed? l GE Response:

There are no test objectives other than those specified on pages 5 and 33. The vent and ,

drain tank capabilities referred to in the RAI were inchided in the test specification to >

permit flexibility in the operation of the test facility. The SBWR PCC vent line is submerged and the condensate drain line has a loop seal which may or may not be full of water. There is some uncertainty as to the importance of vent and drain line submergence to the PCC performance. For this reason,it was decided to maintain the .

option in the test facility hardware to have the capability of running the tests with or  :

without vent or drain submergence. There is no plan to use either submergence as an independent test variable. During or following the shakedown tests, it will be decided to use the SBWR submergence or no submergence.

The condensate tank pressure will be the same as the PCC inlet pressure and temperature will be maintained as close to saturation as practical. The vent tank pressure will be lower than the PCC inlet pressure by the PCC differential pressure.

The vent tank pressure will not be controlled. The " system" pressure will be controlled by throttling the vent tank gas discharge line.

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h As described in the Test Specification, pages 35 and 36, the inlet pressure will be set at i five different values covering the range (somewhat equally distributed) shown in the  !

preliminary Test Matrix in Appendix A. The target pressures are specified in the SIET ,

Test Plan and Procedores document for PANTHERS PCC. Prctest calculations will be .

performed using these target values ofinlet pressure.

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RAI Number: 900.35 Question:

What pre-test analyses have been performed using the TRACG code for the PANTHERS tests? What were the results? '

GE Response:

Pretest calculations for the PANTHERS PCC tests are presently in 'the process of being pertormed. It is planned to run TRACG for the tests in the." Qualification". Test -

Matrix. The results of the calculation are not yet available.

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i RAI Number: 900.36 Question:

Page 39. What will the initial pool temperature be for the pool level tests? What is the  !

preferred method for dropping the water level? Two options are given. The first option ,

is to let the water boil off and the second is to drop the level by draining. The first  :

option is more representative for demonstrating the actual heat exchanger performance expected.

GE Response:

Although the initial pool temperature for the pool level tests A.2 is not specifically stated on page 39, the. temperature will be the equilibrium bulk average temperature  ;

(essentially 100 degrees. C) as established prior to the start of the water level transient.  !

This is implied on page 39 under A.2.1 and A.2.2 by the statement that the test setup is .

a repeat of Test Conditions 41,15 and 30. (See Paragraph 5.2.2, " General Test Procedure" on page 35.)

The water icvel will be lowered by draining water from the PCC/IC pool. Although it would be more representative to allow the water to boil off,it would take too long to perform such a test.  !

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RAI Number: 900.37  :

Question:  ;

l Page 40. How can a LOCA cycle simulation be performed in 30 minutes? The  ;

cooldown/depressurization period from a LOCA is substantially longer than this. The  ;

PCCS may not experience peak pressures for a very long time, but the containment will be pressurized above 300 kpa.(40 psi) five hours into the accident with satwated ,

steam still being cycled through the PCCS. If the objective is to simulate 5 times the life cycle LOCA pressure / temperature cycles, should not the whole LOCA cycle bc  :

simulated? Also, provide a discussion as to how the 5 times the expected number of i lifetime cycles was selected for determining the number of test runs. l i

GE Response:

Tests A.3.1 described on page 40, are structural tests intended to subject the PCC condenser to the same stresses resulting from the same initial LOCA temperature and pressure transients used for the structural design. This is the condition which pr;oduces the greatest stresses because of the rapidity of the temperature and pressure changes and the resulting thermal stresses. The stresses during the cooldown/depressurization period are much lower and will be adequately tested 1 during the performance test series.

I The number of test cycles was determined from ASA1E code requirements for experimental stress analysis described in ASME Code Section III, Article 11-1000, i Subarticle 11-1520, " REQUIRE 51ENTS FOR CYCLIC TESTING OF COMPONENTS" The minimum number of test cycles is calculated according to part "c" of the i Subarticle. For a single series of cyclic tests of a full-scale prototype at design conditions,i.e. the stresses are equal to the design values, the minimum number of test cycles is calculated as follows:

Since the materials , geometry and test conditions (temperature ad ,

pressure) are prototypical, .j K,, = Kg= K,, = K,, = 1. 0 )

For a single series of cyclic tests, K,, = 1.470 - 0.044(1.0) = 1.426 Therefore, .;

K, = 1.426 -)

and K, = K,d3 = (1.426)** = 4.6 If the test is performed at the design load, then Ku = .K, _and Km = K,, . Or,  ;

Ky = 4. 6 - 5, )

i.e. the number of test cycles must be about 5 times the number of cycles used i for design.

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RAI Number: 900.38

' Question: [

Page 41. Pressurizing the PCCS for 1-2 minutes does not seem representative of the length of the pressurization cycles that the containment will experience throughout its life cycle. Typically, the containment will be pressurized during a Type A test for ,

anywhere from 6 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Explain how 1-2 minutes was selected.- In addition, i current requirements for Type A testing is for 3 tests to be performed per 10-year cycle. This would require 18 tests per life cycle. Even on an accelerated schedule ,

where there would be testing during every outage,' the maximum number of tests would be on the order of 40. Explain why 60 tests were chosen as a baseline for determining the number of test runs. Also, explain the selection of 110 psig as a test pressure.

GE Response:

Test A.3.2 is to simulate the cyclic stresses caused by alternately pressurizing and  ;

depressurizing the PCC condenser during containment leak tests. The length of time for which the unit is pressurized is not a contributing factor to the fatigue usage, only the number of times and the peak pressure are significant. The first paragraph.

on page 41 explains that "The pressure will be maintained long enough to demonstrate that the PCC does not leak". It is estimated that no more than 1.- 2 i minutes should be required to detect whether the PCC is leaking.

The structural design basis of the condenser assumed conservatively two pneumatic post maintenance leak tests at the PCC condenser design pressure of 110 psig during l each refueling outage. Assuming an outage every two years for the 60 year design life of the SBWR results in 60 leak test pressurization cycles for the PCC condensers.

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RAI Number: 900.39 Question:

Page 44. Does the helium flow . ate specified for the test with low density noncondensable gases bound maximum DBA and severe accident conditions with regard to hydrogen concentration in the containment? Is it anticipated that conditions might be such that both hydrogen and nitrogen could be mixed with the steam? If so, whv is the test not arranged so as to provide test conditions reflective of anticipated actt.at conditions?

GE Response:

Please see the responses to 900.27 and 900.28. Tests are planned (See page 57 of the +

Test Spec.) with a mixture of helium and air to simulate a mixture of hydrogen and- i nitrogen. Significant changes in performance are not expected to occur as a result of different mixture concentrations, but the specified tests are to demonstrate this. 1 i

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.i RAI Number: 900.40 I

Question:

Are the steam flow rates chosen in the PCCS test matrices bounding for all anticipated DBA conditions? For severe accident conditions?

GE Response:

The maximum steam flow rate shown in the test matrix is the maximum flow rate available at the test facility. This flow rate is equivalent to a condensation rate which exceeds the PCC condenser design value by a significant margin. The maximum test flow rate bounds both DBA and severe accident flow rates for the period during which the PCCS is designed. Following a oA or severe accident, the primary function of the PCC is long term coolin3of the containment after the RPV-blowdown is finished and the flow through the main vents to the suppression pool .-,

has nearly stopped. The steam flow rates by this time are much lower than the ,

maximum rates during the blowdown.

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RAI Number: 900.41 I Question: ,

l Explain how once-through testing of the PCCS can be representative of the operational behavior of the PCCS. What information will be provided by this test platform that is different than the previous tests (GIRAFFE and University Condensation tests)?

l GE Response:

The steady-state tests of the PCC condenser will provide component performance for a wide range of conditions representing points on the various DBA long term cooling transients postulated for the SBWR. The performance of the PCC system is .3 not represented in the PANTHERS facility but was tested in the GIRAFFE program. '!

The PANTHERS testing provides confirmation that the full-scale prototype condenser meets the SBWR design requirements and that the three-tube GIRAFFE condenser behaves similar to the prototype.

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RAI Number: 900A2 ,

- Question: j i

Provide test program specifications, procedures., matrices (including objectives, test  :

parameters, conditions, mass and energy release profiles, etc. for each test planned),

the scaling analysis, and an instrumentation description (layout and -

characterizations, e.g., steady state and transients measurements).  ;

I GE Response:

A test specification is being prepared for the PANDA program and is currently being ,

reviewed and revised prior to being issued. This document will provide test objectives,- #

parameters, matrices etc. for the planned tests. The scaling analysis has been issued as a separate document and a draft copy was previously submitted on November 11,1993 (NEDC-32288). The test procedures have not been prepared yet. A list of planned instrumentation is attached.

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1 INSTRUMENTATION  ;

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, Classification in categories:

Revision 3 I musts II wants III interesting 1

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. Tec 1 feasability not considered e I - II-* III means:

- Decreasing importance of measured quantity .

- Decreasing order of secure financing Note,: Only I. anci 3 instrums.ucs Cafe. gory w i M b e.: v s e d . - fa,(M, M/M/CM!DE 4231-930328-1/10 1

~

l TEMPERATURES P

Location Designation Medium Cat. Quant, e RPV Vertical distribution water / steam / gas I 3 or II 5 or III 9 Middle of downcomer water I 2 e

. DW 3D - Distribution steam / gas I 2 x 6 or III 2 x 12 Water surface water I 2 x 2 or -

., III 2x4

. WW 3D - Distribution gas space steam / gas I 2 x 6 or III 2 x 12 3D - Distribution liquid space water I 2 x 6 or -

III 2 x 12 Water surface water I 2 x 2 or -

III 2x4

. IC/PCC Lower drum gas and liquid space steam / gas I 4x3 Upper drum IC/PCC tubes Vertical distribution (1 tube) steel II 4x1x7 l Vertical distribution (same tube) steam / gas II 4x1x7 Bott./ middle / top (2 add. tubes) steel II 4x2x3 Bott./ middle / top (1 add. tube) steel outside II 4x3 e IC/PC(llFpool Distr. near IC/PCC tubes water I 4x7

• L Additional T.C. for PCC3 water I 12

. GDCS pool Vertical distribution gas space steam / gas I 3 Vertical distribution liquid space water I 3 ,

Water surface water I 1 I e DW o DW Vertical distribution steam / gas II 3 e WW o WW Vertical distribution gas space steam / gas II 3 Vertical distribution liquid space water II 3 )

Water surface water II 1 I cont'd on next page j l

l M#N#N 4231-930328-2/10 2

, ? .; , ;

I 7

i hont'd from previous page l Location Designation Medium Cat. Quant.

. Main vent 2 TC near WW water I 2x2 ,-

I

. IC/PCC vent 2 TC near WW water I '4x2 e IC drain 2 TC near RPV water I 2 e PCC drain 2 TC near GDCS liquid space water I. 3x2 1

. WW o RPV Equalization line water II 2x3  :

t

. WW heat Inside TC steel I 2 x 9 or losses / capacities III' 2 x 15 Outside TC steel I 2 x 9 or III 2 x 15  :

e DW heat Inside TC steel I 2 x 9 or losses / capacities III 2 x 15 ,

Outside TC steel I 2 x 9 or -

III- '2 x 15' r

e GDCS heat Inside TC steel II 6 losses / capacities Outside TC steel II 6 End of table ' temperatures' P

t I

GB/DEMU#I;W12W 4231-930328-3/10 3

6 *'*'4

• 1 PRESSURES Location Designation Medium Cat. Quant.

. RPV Top of RPV steam I 1 e DW Top of DW steam / gas I 2x1

. WW Top of WW steam / gas I 2x1 e IC/PCC Upper drum steam / gas I 4x1 e IC/PCC pool Atmospheric steam / gas I 1 e GDCS Top of GDCS steam / gas II 1 End of table ' pressures' i

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UED/[ELCCDD#ta;AU.HTJ 4231-930328-4/10 j

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e PRESSURE DIFFERENCES Location Designation Medium Cat. Quant, e RPV o DW Main steam line steam II 2x1

. RPV o IC IC steam supply'line steam / gas I 1-  !

e DW *PCC PCC steam supply line steam / gas I 3x1 e IC/PCC Upper drum -lo'wer drum steam / gas I 4x1

. IC

• RPV IC condensate drain line steam / water ~ I '1 e PCCe GDCS PCC condensate drain line steam / water I 3x1 e IC/PCC

• WW IC/PCC vent line (total) water / steam / gas I' 4x1 Ilydrostatic water / steam / gas I' 4'x1 e GDCS* RPV GDCS line water II 1-e WW b DW Vacuum breaker steam / gas I. 2x1 e DW e WW Main vent line steam / gas II 2x1 e WW

• RPV Equalization line water II 2 x l'  !

End of table ' pressure differences' l

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. + 2,_l LEVELS AND VOIDS Location Designation . Medium Cat. Quant.

. RPV Bottom - top water / steam I 1  ;

Void distribution water / steam II 1x5

. DW Bottom - above water surface water / steam / gas I 2x1

. WW Bottom - above water surface water / steam / gas I 2xI

. IC/PCC pool Bottom - top water / steam / gas I 4x1

. G DCS . Bottom - top water / steam / gas I 1 End of table ' levels and voids' (RS/DACDE#tielmi 4231-930328-6/10

. RPV IC Condensate drain line water & II 1  !

. IC => WW IC Vent line steam / gas A I 1 e PCC => 'GDCS PCC Condensate drain line water A II 3x1 e GDCS o RPV GDCS line - water A I 1

. PCC => WW PCC Vent line steam / gas & I 3x1 e IC/PCC tubes Tube mass flow steam / gas & .III 4 x 2'x 1 2 tubes per IC/PCC End of tabL ' mass flows / flow indicators'-

UEl#DGEAX00#tarudLurd 4231-930328 7/10 7

At..

L GAS CONCENTRATIONS / HUMIDITIES -

Location Designation Medium Cat. Quant.

. RPV Near main steam line steam / gas III 1

. DW 3D - Distribution steam / gas I 2 x 2 or '

II 2 x 6 or III 2 x 12

. WW 3D - Distribution gas space steam / gas I 2 x 2 or II 2 x 3 or III 2x6 IC/PCC tubes Vertical distribution steam / gas III 4x1x4 >

e GDCS pool Top of pool steam / gas I 1 e DW o DW Vertical distribution steam / gas III 3

. WW e WW Vertical distribution gas space steam / gas III 3 End of table ' gas concentrations /humiditics' i

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1 MISCELLANOUS Type Designation Medium Cat. Quant.

• Power Electrical Power -

I 1

. Conductivity IC/PCC vent line (for line clearing) Entrance to IC/PCC water / steam / gas II 4x1 Exit at WW water / steam / gas II 4x1 Main vent line Exit at WW water / steam / gas I 2x1 End of table 'miscellanous' f

[TED#0G#D00#li-Lah23;J 4231-930328-9/10 9

• tO gr g - I 5

NUMBER OF SENSORS Cat. I Cat. I+II Cat.1+11+III Mass flow 14 18 26 Gas concentration / humidities 9 19 60 -

Temperature 202 324 392 I

Pressure 10 11 11 Level / void 10 15 15 Pressure difference 22 29 29 Electrical power 1 1 1 Conductivity 2 10 10 ,

Total 270 427 544 Total (4 sensors per mass flow) 310 512 734 UED#M/IHAh!L>1id 4231-930328-10/10

. I RAI Number: 900A3 Question:

Provide a detailed presentation on the PANDA test program. The presentation should include, but not be limited to, a description of the facility (with schematic drawings),

test scenarios planned, scaling, instnunentation, the latest test matrices, a schedule update, and a description of any pre-test analyses (either completed already or planned in the future).  !

GE Response:

1 GE recently gave a complete presentation on PANDA at Purduc University on October 1,1993. As more materials are generated for PANDA, e.g., Test Requirements, Test Procedures, etc., they will be sent to the NRC. ,

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RAI Number: 900.44 t

Question:

Provide the results of the pre-test analyses (once completed). ,

GE Response:

The pretest analysis has not been completed. GE will provide the results to the NRC l when the analysis is complete. ,

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' RAI Number: 900.45 Question: )

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Provide the staff with copies of the TRACG input deck on diskette, a noding diagram, l and input description for use in the performance of confirmatory calculations.  ;

i GE Response: f The TRACG input deck for the PANDA tests is still under development and has not been finalized. GE will provide a copy to the NRC when the deck is complete.

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