NRC FORM 658 U.S. NUCLEAR REGULATORY COMMISSION(-1 999)

TRANSMITTAL OF MEETING HANDOUT MATERIALS FORIMMEDIATE PLACEMENT IN THE PUBLIC DOMAIN

This formn is to be filled out (typed or hand-printed) by the person who announced the meeting (i.e., theperson who issued the meeting notice). The completed forn, and the affached copy of meeting handoutmaterials, will be sent to the Document Control Desk on the same day of the meeting; under nocircumstances wil this be done later than the working day after the meeting.Do not include proprietary materials.

DATE OF MEETING

The attached document(s), which was/were handed out in this meeting, is/are to be placed06/05/2003 in the public domain as soon as possible. The minutes of the meeting will be issued in the

near future. Following are administrative details regarding this meeting:

Docket Number(s) PROJ0722

Plant/Facility Name Advanced CANDU Reactor (ACR-700)

TAC Number(s) (if available)

Reference Meeting Notice

Purnom nf Meetinn

MB5765

(copy from meeting notice) AECL technical presentation during the visit to the

RD-14M Facility

NAME OF PERSON WHO ISSUED MEETING NOTICE TITLE

Belkys Sosa Project Manager

OFFICE

NRR

DMSION

NRLPO

BRANCH

Distribution of this form and attachments:Docket File/Central FilePUBLIC

NR_ OM68(-99 RNE NRCCE APRTi ai a einduigkFriNRC FORM 658 ts-1999) PRINTED ON RECYCLED PAPER This frm was desigred using hnForms

Large-Scale Vented Combustion Test FacilityAECL's Large-Scale Vented Combustion TestFacility (LSVCTF) is a 10-m long, 4-m wide,3-m high rectangular enclosure with aninternal volume of 120 m3. It is constructed of1.25 cm thick steel plates welded to a rigidframework of steel I-beams. Two roller-mounted movable end walls are provided toopen up the vessel for internal modificationsor to move in bulky experimental equipmentwhen needed. The combustion chamber andassociated equipment is enclosed in aninsulated metal Quonset. The test chamber,including the end walls, is electrically trace-heated and heavily insulated to maintaintemperatures in excess of 100°C for extendedperiods of time. This is the only large-scalefacility in North America that can be used toperform combustion tests with hydrogen-air-steam mixtures. This combination of largescale, geometry versatility and control ofinitial conditions is unique in the world.

The combustion chamber can be subdividedinto 2 or 3 compartments using structural steelpartitions. Variable sizes of vent openings areavailable between compartments and to theoutside. The facility has three separate gasaddition systems for steam, hydrogen, andinert gases. Hydraulic fans inside the testchamber are used to mix the gases and toprovide turbulent conditions duringcombustion. Instrumentation includespressure transducers, thermocouples, and gassampling by mass spectrometer, at severallocations inside the test chamber. The facilityuses a customized Labviews program for dataacquisition and data management

The facility is located in a fenced area and isremotely operated to ensure operator safety.

Key Features of LSVCTF

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variable vent openingrectangular interconnected chambersremovable end walls for easy access200 kPa design pressurestate-of-the-art data management systemchambers can be trace heated to 100Cmass spectrometer for gas concentrationmeasurements

. remote operation for operator safety

AECL's lae-Scale Vented Combustion Test Fadlity Iswell suited for tests Involved interconnected chambers

Combustion Program at AECL

Hydrogen is a flammable gas producedduring some types of accidents in nuclearreactors. The gas is released whenoverheated metals are exposed to steam inthe reactor core. When mixed withcontainment air, hydrogen can bum andproduce unacceptable pressures and damageequipment within the containment building.A Canadian research program on hydrogencombustion and containment behavior wasinitiated at Vhiteshell Laboratories in thelate 1970's. The objectives of the research

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program were to reliably predict and designmeans to mitigate hydrogen combustion inreactor-containment structures.

Environmental QualificationAssessment and TestingThe LSVCTF is a fully serviced andinstmmented test vessel that lends itself wellto environmental qualification assessmentand testing under severe conditions.

LSVCTF can be subdtvided Into 2 or 3 compartments usingstructural steel partitions.

The fadilty uses "Labview", a state-of-the-art dataacquisition systen, for data management.

For more information, please contactReactor Safety DivisionContainment Analysis BranchWhiteshell LaboratoriesPinawa Manitoba, ROE Il)

Tel: (204) 753-2311Fax: (204) 753 2455

LSVCTF control room and Its data acquisition system

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Diffusion Flame FacilityA ECL's Diffusion Flame Facility (DFF) at

Whiteshell Laboratories consists of aAm Lburner with associated gas supply linesand instrumentation housed within a modifiedgrain silo (5 m diameter and 8 m height), whichwas elevated lm off the ground for ventilationpurposes and insulated to retain heat forexperiments that invole an air / streamenvironment. Tests with H2 / stream jet flames(up to 15 cm in diameter) in air / streamatmosphere (up to 30% steam by volume) can beperformed in this facility.

AECL's Diffusion Flame Facility is a 5-m-diameter, 8-m-height insulated enclosure. Hydrogen-steam diffusion flametests up to 15 cm diameter can be performed in this facility.

Diffusion Flame Experiments

The Objectives

* to provide information and tools tosupport the demonstration that thecontainment system design isadequate to limit the consequencesof a postulated LOCA

* to determine the stability regime,time-average flame temperatureand heat load to nearby objects forvarious hydrogen diffusion flames

Flame Temperature Measurement

Time-averaged flame temperature canbe measured for a hydrogen jet up to avelocity of 500 m/s and initialtemperature of 6000C.

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Key Features of DFF

* 20 m3 cylindrical enclosure* insulated wall* real-time multi-point temperature

measurements* air-steam atmosphere up to 600C* hydrogen jet preheated to 6000C* hydrogen jet velocity up to 500 m/s

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Flame Temperatures of a dry hydrogen jet preheatedto 500°C

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Heat Load to Flame-Impinged Objects

Engineering correlations have been determine fordetermining the heat load on protected and non-protected flame-impinged flat plates andcylinders.

Thermal Protection

Various types of insulation materialhave been tested. It was found thatheat load to a flame impinged objectcan be significantly reduced (>95%) byprotecting the surface with a layer ofthermal insulation such as a cerablanket.

Heat flux on protected and non-protected objects has beendetermined.

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Temperature on a 635-mm-thick Unprotectedand Protected Steel Plates with Various Typesof Insulation

For more information, please contactReactor Safety DivisionContainment Analysis BranchWhiteshell LaboratoriesPinawa, Manitoba, ROE LO

TeL.: (204) 753-2311Fax: (204) 753-2455

Flame Inpinged Heat-Transfer Coedident of a50.8-cm-diameter, 12.7-nn-thick Pipe withCirtlating Water Flow

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Containment Test FacilityThe Containment Test Facility (CTF) atWhiteshell Laboratories consists of a 6-m3sphere and a 10 m3 cylinder, both rated forpressures up to 10 MPa and trace-heated foroperation at temperatures up to 1500C. Thelarge vessels may be interconnected by30 cm and 50 cm diameter ducts. The CTFis designed to investigate the fundamentalsof combustion phenomena. These includeflammability limits, ignition, turbulentcombustion, flame acceleration, detonation,detonation transition, and dust explosions.

Objectives of the CombustionProgram at AECL

Hydrogen is a flammable gas producedduring some accidents by a reaction betweensteam and overheated metals in the reactorcore. When mixed with containment air,hydrogen can burn and produceunacceptable pressures within thecontainment building. A Canadian researchprogram on hydrogen combustion andcontainment behavior was initiated atWhiteshell Laboratories in the late 1970's.The objectives of the research program wereto reliably predict and design mans tomitigate hydrogen combustion in reactor-containment structures.

Key Features of CTF

* Vented and unvented tests* Interconnected pipes of different

lengths (up to 6 m) and diameters (upto 0.45 m i.d.)

* Large man-holes for easy access* 10 MPa design pressure* State-of-the-art data management

system

The Containment Test Facility at Whiteshell Laboratoriesconsists of a 6-rn sphere and a 10-mn cylinder, both rated forpressures up to 10 MP

Types of Combustion Studies

* Ignition by hot surfaces* Flame jet ignition* Vented combustion* Burns in interconnected vessels* Obstacle induced flame acceleration* Burns in non-uniform mixtures

Data Acquisition System

CIT tests are performed remotely. Thefacility uses 'abview", a state-of-the-artdata acquisition system, for datamanagement.

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Others Combustion Vessels

The Medium-scale Combustion Sphere

This test vessel consists of a 0.76m-ID.sphere attached to a 1.12-m-long and 0.145-m-diameter pipe, with a total volume ofapproximately 0.252 n3. The vessel is ratedfor an overpressure of 5.0 MPa at 100° C.This vessel was designed to study flame jetignition and Deflagration to DetonationTransition (DDT) phenomena.

This 15-cm-diameter, 6-m-long detonationtube can be trace heated to 200°C. It wasdesigned for detonation studies. Thisapparatus when divided into two sectionscan be used as a shock tube. It has beenused for determining the ignition limitresulting from shock focusing.

0.28-cm-diameter Combustion Duct

This is a 6-m-long steel vessel, rated for anoverpressure of 10 MPa, was designed forstudying flame acceleration and DDTphenomena. This apparatus has been usedfor determining the DDT limits andtransition run-up distances.

For more information, please contactReactor Safety DivisionContainment Analysis BranchWhiteshell LaboratoriesPinawa Manitoba, ROE LO

Tel: (204) 753-2311Fax: (204) 753 2455

15-cm-diameter Detonation Tube

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