Lý thuyết Lò phản ứng

find strategy to maneuver power level by controlling - control rod movement with automatic boron ppm, or - control boron pppm with automatic control rod. - fully withdrawn position is 38[r]

6 e-CORSIM practice

Jonghwa Chang jhchang@kaeri.re.kr

Input MAS_INP

XS-Library

Restart MAS_RST

Output MAS_OUT

Summary MAS_SUM

Restart MAS_RST

Pin Info.

MAS_PPI MAS_PEI

MAS_PPI: Pin by Pin Information File MAS_PEI: Pin Enthalpy File

MASTER interface files

MASTER : A 3D nodal diffusion code developed by KAERI

- Pause before next phase

- Read and execute fragmented input

- Show key parameter to GUI at the end of a phase

GUI feature :

- Initialize by reading master input

- Display key parameters on user demand

- Activate controls

- Prepare fragmented input for MASTER (EXE and EDT card)

- Invoke MASTER and wait

e‐CORSIM flow

• e-CORSIM is a graphic user interface for MASTER training course

MASTER status diagram

setup: e-Cosim Setup.msi

Installed directory structure

L/P search – setup loading pattern

Xenon transient – Xenon oscillation or Load following simulation

Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5 Cycle 6 Cycle 7

FA Type

Fuel Enrichment (w/o U-235) No of Fuel Rods per FA No of BA Rods per

FA

BA Content (w/o)

Loaded Cycle Normal Zoned Normal Zoned

FA Type

Fuel Enrichment (w/o U-235) No of Fuel Rods per FA No of BA Rods per

FA

BA Content (w/o)

Loaded Cycle Normal Zoned Normal Zoned

D2 F2,G2,H2,J2,K2,K6 K4

 With Axial Cutback

5%

5%

5 - Lead Regulating Bank

4 - Second Regulating Bank

3 - Third Regulating Bank

2 - Fourth Regulating Bank

1 - Fifth Regulating Bank

180°

270°90°

M

M

M M

8 ADDITIONAL LOCATIONS FOR SHUTDOWN CEA’S

45 FIXED RHODIUM IN-CORE NEUTRON DETECTOR STRINGS

2 NEUTRON SOURCE ASSEMBLIES

(M) (S) (●) (◆)

4-finger

12-finger

FA ID

180°

270°90°

FA ID Previous Cycle Location

180°

270°90°

M-12 D2 L-03 D1 D-03 C1 K-12 B0 B-12 B0 J-07 B0 P-12 C1 F-12 D1 M-03 D2 E-03 C1 D-12 D0

P-11 D2

C1

C1 P-07 D0 H-15 C1

C1

D2 N-11 D0 B-11

E0 D1

C-04 C1 F-06 D2 G-05 B2 J-13 C0 R-07 B1 H-07 C0 A-07 B2 G-13 D2 L-07 C1 L-05 D1

E0 D2

F-02 B0 M-02 C1 G-14 C0 G-15 B2 F-08 C0 N-13 C1 H-14 C0 C-13 B2 H-04 C0 J-15 C1 J-14 B0 D-02 D2

D2

B0 G-07 D0 R-08 B1

C1 P-08 B1 C-08 C1

B1 J-08 D0 A-08 B0

D2 J-05

E0 D2

F-14 B0 M-14 C1 G-02 C0 G-01 B2 H-12 C0 N-03 C1 H-02 C0 C-03 B2 K-08 C0 J-01 C1 J-02 B0 D-14 D2

E0 D1

C-12 C1 E-11 D2 E-09 B2 J-03 C0 R-09 B1 H-09 C0 A-09 B2 G-03 D2 J-11 C1 K-10 D1

D0 P-05 D2

C1

C1 P-09 D0 H-01 C1

C1

D2 N-05 D0 B-05 C1

M-04 D2 L-13 D1 D-13 C1 K-04 B0 B-04 B0 G-09 B0 P-04 C1 F-04 D1 M-13 D2 E-13 C1 D-04 D0

D2

B0 F-01

FA Type No of FAs

FA ID Previous Cycle Location

180°

270°90°

DS E2

K-14 E0 J-15 D2

C1

D2 D-13 E0 G-15 E2

E2 F-08 E2

C0 G-05 E2 F-04 D0 M-14 C0 G-07 D0 D-14 E2 K-04 C0

E2 B-10 E2 K-06

F1 E0

R-09 C0

E0

D2 N-12 E2 D-06 D2

E0 B-11

D0 D-08 B1 H-03 D0

D2 R-08 C0 J-07 C1

E2 P-08

E0 B-05

F1 E0

R-07 C0

E2 F-10 E2

C0 G-11 E2 F-12 D0 M-02 C0 J-09 D0 D-02 E2 K-12 C0

E2 B-06 E2 K-08

DS E2

K-02 E0 J-01 D2

C1

D2 D-03 E0 G-01 E2

E2

E0 E-02

FA Type No of FAs

FA ID Previous Cycle Location

180°

270°90°

M-12 F0 A-09 E0 F-01 F2

E2

F2 L-09 E0 K-01 E0 R-09 F2 D-12 F1

P-11 F0

E2 D-02 F1 F-02 F2 G-03 F2 H-02 F2 J-03 F1 K-02 E2

F0 G-01 F1 B-11

G0 E0

A-06 E2

F2

F2 J-05 F1 B-06 E2 K-04 E1 J-09 E0

E0 L-03 E1 G-09 E2 F-04 F1 P-06 F2

F2 K-06

E2 R-08 B1 N-08 E2

E2 D-13 F2 P-08 E2

F2 K-08

E0 L-13 E1 G-07 E2 F-12 F1 P-10 F2

F2 L-11

G0 E0

A-10 E2

F1 P-05 F0

E2 D-14 F1 F-14 F2 G-13 F2 H-14 F2 J-13 F1 K-14 E2

F0 G-15 F1 B-05 F2

M-04 F0 A-07 E0 F-15 F2

E2

F2 L-07 E0 K-15 F0 R-07 F2 D-04 F1

F2

F2 K-10

FA Type No of FAs

FA ID Previous Cycle Location

180°

270°90°

H0 G0

J-15 G2 C-09 G2

F2

G2 J-05 G2 N-09 G0

G2 L-11 G0

F2 K-13 G0 B-11 F1 B-12 G2 F-08 F1 P-12 G0 P-11 F2

G0 A-09 G2 D-12

H0 G2

J-03 F2

G1

G2 E-07 G0 L-02 F1

G1 B-10

G2 P-08 B1 H-13 G2

E2 E-10 G2 H-06 F2

DS G-09

G1 B-06

H0 G2

J-13 F2

G2 M-04 G0

F2 K-03 G0 B-05 F1 B-04 G2 K-08 F1 P-04 G0 P-05 F2

G0 A-07 G2 E-05

H0 G0

J-01 G2 C-07 G2

F2

G2 J-11 G2 N-07 G0

DS

G1 F-02

FA Type No of FAs

FA ID Previous Cycle Location

180°

270°90°

J0 H0

E-02 H0 J-15 H1

H2

H1 K-02 H0 G-15 H0

G2 H-09 H0

H2 J-13 H2 E-09 G0 K-12 H0 C-03 G0 F-12 H2 L-09 H2

H0 P-05 G2 D-08

J0 H0

R-09 H2

G0

H1 B-06 H2 J-05 G2 B-04 H2 D-04 G2

G2 L-03 H2 M-04 G2 P-04 H2 G-05 H1

G0 C-12

H1 F-08 G2 C-06 H1

H2 K-06 H0 N-03 H2

H2 E-11

G2 L-13 H2 M-12 G2 P-12 H2 G-11 H1

G0 C-04

J0 H0

R-07 H2

G2 M-08 H0

H2 J-03 H2 E-07 G0 K-04 H0 N-13 G0 F-04 H2 L-07 H2

H0 P-11 G2 H-07

J0 H0

E-14 H0 J-01 H1

H2

H1 K-14 H0 G-01 H0

H2

G0 D-03

FA Type No of FAs

FA ID Previous Cycle Location

180°

270°90°

H2 F-04 J0 J-15 H2 H-13 J0 G-15 H2 K-04 H1

J2

H1 F-13 H2

J2 L-11 J0 B-11 F2

F2 G-12 J0 P-11 J2

H2 K-06 H1

H0

J2 G-03 H2 H-15 J2

H0

H1 C-10

K0 J2

D-04 H0 E-13 F2 H-04 J1 E-09 J1 K-14 J2 H-14 J1 F-14 J1 L-09 F2 M-08 H0 L-13 J2

F2 M-09 J2 C-07 J1 P-10 C1 D-07 J0 N-13 J1 G-07 J0 C-13 C1 M-07 J1 B-10 J2 N-07 F2

J0 A-09 H2

N-08 J2

H2 R-08 J2

J1 G-09 D2 E-05 J1

J2 B-08 H2

J2 F-08 H2 C-08 J0

F2 M-07 J2 C-09 J1 P-06 C1 D-09 J0 N-03 J1 J-09 J0 C-03 C1 M-09 J1 B-06 J2 N-09 F2

J0 A-07 H2

K0 J2

L-05 H0 E-03 F2 D-08 J1 E-07 J1 K-02 J2 H-02 J1 F-02 J1 L-07 F2 H-12 H0 L-03 J2

H0

H1 C-06 H2

J2 D-12 J0 B-05 F2

F2 G-04 J0 P-05 J2

H2 K-10 H1

J2

H1 F-03 H2

F-12 J0 J-01 H2 H-03 J0 G-01 H2 K-12

FA Type No of FAs

Select restart file and fuels

- Select cycle 2, 4, and 6 for cycle 7

Just after install ‐ End of cycle 6

button controls drag and drop FA information rotate button

Core information

Press “Fix Core” then “Single Run” for quick check

Drag and drop between “Core” and “NEWFUEL” or “REFUEL”

• keep Checker board pattern

• keep Octant symmetry

Checker board pattern

- better for lowering peak power

Fxy

Fxy

 copy New_cy7_USERDATA files to USERDATA directory.

click “Cycle depletion until “Completed”

click “Result View”

Letdown curve

click “Reactivity Calculation”

- take long time !

select a starting point (by EFPD) MAS_RST.YG3Q_0210.00

efpd

Quick check if xenon oscillation is stable by sudden control rod movement

find strategy to maneuver power level by controlling

- control rod movement with automatic boron ppm, or

- control boron pppm with automatic control rod

- fully withdrawn position is 381 cm.

 when it is impossible to withdraw Execution stops !

- begin with boron search for accurate initialization

Practice :

Find 0(100%) - 3 (50%) – 6 (50%) - 3 (100%) cycle

use boron search first to make accurate equillibrium

PDIL : power dependent insertion limit (to limit consequence of rod ejection accident) AO(axial offset) limit : to limit consequence of DNB, LOCA

Boron search only

Too large axial offset

at full power

Control rod position search only

PDIL violation Insertion limit

turn to ppm search until 75% power

Too large axial offset

at full power

* practice : use ppm search and rod position search to keep limits

e-CORSIM is convenient tool for training Nuclear Design

- set up Loading pattern

- compute Feedback coefficients

- check Xenon oscillation

- simulate Load Following