1EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

L. Mansani

mansani@nuc.ansaldo.it

WP1.2WP1.2EFIT and XP-ADS DataEFIT and XP-ADS Data

2EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

Reference Documents

EFIT D1.24 Main Component Functional Sizing of the EFIT (under review

to make consistent with D1.26 and to include primary system pressure losses, Lead volume, primary and target pumps characteristics, DHR 1 & DHR 2, CFX evaluation, etc)

D1.26 Main Component Assembly Drawings of EFIT (issued)

XT-ADS D1.27 & D1.28 Description and functional sizing of the Main

Components of the Reference Design of the XT-ADS (Draft) Main Component Assembly Drawings of EFIT (Draft)

3EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

P- head 1.37 bar

SG

ΔPsg0.4 bar

mfr 4500 kg/s

ΔPp0.27 bar

mfr9000 kg/s

ΔPc = 0.7barmfr = 33000 kg/s

ΔPc-in = 0.3 barΔPc-out = 0.1 barΔP-rods = 0.2bar

ΔPc-grids = 0.1 bar

ΔPsg + ΔPc = P-head – ΔPp ΔPsg

Pressure Drops and Free Levels in the EFIT Primary System

Primary coolant flow rates [Kg/s]

total: 36000

across the core

- fuel assemblies: 33000

- fuel assemblies by-pass: 650

- dummy assemblies: 550

across the HX of the Target Unit: 1500

across each pump: 9000

across each SG: 4500

ΔPc: fuel assemblies pressure drop

ΔPp: pump duct pressure drop, with

pump working

ΔPsg: SG pressure drop

P-head: head of the pump

+1085

+1473

+406

+1985

SGU Midplane -1655

Core Midplane -5355

2v5.0p

Pump ΔPp= 0.5 ξρv2

ξ=2.2 pump in operationξ=3.7 pump freeξ= 5.6 pump locked

4EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

SGv = 0.6 m/s

Lead Mass Distribution and Average Velocities in the EFIT Primary System

Pump ductv = 1.5 m/s

M = 570 tons

M = 855 tons

M = 589 tons(8 SGs & 4 PPs)

M = 3596 tons Total Mass of Lead = 5954 tons

DHRv = 0.15 m/s

M = 170 tons

+1085

+1473

+406

+1985

DH

R

M =

17

4 t

Corev = 1 m/s

5EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

EFIT Primary Pump Characteristic

6EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

XT- ADS General Arrangement

7EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

XT- ADS General Arrangement

8EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

XT- ADS Primary Heat Exchanger

9EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

Core Mass Flow RatesFuel A: 4518 kg/sBy Pass: 296 kg/sDummy A: 1258 kg/sTarget: 206 kg/sStorage F: 90 kg/sOthers: 631 kg/s

Core Pressure DropMass flow rate: 4518 kg/sPressure drop: 90900 PaCore v = 1.5 m/s

Pump (N° 2)mfr/pump: 3500 kg/sΔPpump: 47000 PaPump duct v = 1.9 m/sΔppump = 0.5 ξ ρ v2

ξ= 2.5 pump workingξ= 3.3 pump not lockedξ= 4.8 pump locked

PHX (N° 4)mfr/PHX: 1750 kg/sΔPPHX = 25000 Pa

v = 1 m/s

Mass Flow Rate, Pressure Drops and Free Levels In the XT-ADS Primary

System

Data for primary system design

Mid PointFuel

Mid PointPHX

2000

900

10EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008

XT- ADS Primary Pump Characteristic