UNICOS-CPC applied to Cryogenics and specifications Benjamin Bradu EN-ICE-PLC February 2014.
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Transcript of UNICOS-CPC applied to Cryogenics and specifications Benjamin Bradu EN-ICE-PLC February 2014.
Summary
UNICOS-CPC for LHC cryogenics Overview of the cryogenic systems Functional decomposition UNICOS implementation
Control System Specifications Specification documents Functional Analysis UNICOS-CPC Design
LHC cryogenics
3
Point 1
Point 2
Point 3
Point 4
Point 5
Point 6
Point 7
Point 8 Sector refrigeration plant
3.3 km
Sector Refrigeration plant
4
UpperCold Box
Interconnection Box
Cold Box
WarmCompressor
Station
LowerCold Box
Distribution Line Distribution Line
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
Sha
ftS
urf
ace
Ca
vern
Tun
nel
LHC Sector (3.3 km) LHC Sector (3.3 km)
1.8 KRefrigeration
Unit
New4.5 K
Refrigerator
Existing4.5 K
Refrigerator
1.8 KRefrigeration
Unit
WarmCompressor
Station
WarmCompressor
Station
WarmCompressor
Station
ColdCompressor
box
Even pointOdd point Odd point
MP StorageMP Storage MP Storage
UpperCold Box
Interconnection Box
Cold Box
WarmCompressor
Station
LowerCold Box
Distribution Line Distribution Line
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
UpperCold Box
Interconnection Box
Cold Box
WarmCompressor
Station
LowerCold Box
Distribution Line Distribution Line
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
Sha
ftS
urf
ace
Ca
vern
Tun
nel
LHC Sector (3.3 km) LHC Sector (3.3 km)
1.8 KRefrigeration
Unit
New4.5 K
Refrigerator
Existing4.5 K
Refrigerator
1.8 KRefrigeration
Unit
WarmCompressor
Station
WarmCompressor
Station
WarmCompressor
Station
ColdCompressor
box
Even pointOdd point Odd point
MP StorageMP Storage MP Storage
UpperCold Box
Interconnection Box
Cold Box
WarmCompressor
Station
LowerCold Box
Distribution Line Distribution Line
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
UpperCold Box
Cold Box
WarmCompressor
Station
LowerCold Box
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
Sha
ftS
urf
ace
Ca
vern
Tun
nel
LHC Sector (3.3 km) LHC Sector (3.3 km)
1.8 KRefrigeration
Unit
New4.5 K
Refrigerator
Existing4.5 K
Refrigerator
1.8 KRefrigeration
Unit
WarmCompressor
Station
WarmCompressor
Station
WarmCompressor
Station
ColdCompressor
box
Even pointOdd point Odd point
MP StorageMP Storage MP Storage
UpperCold Box
Interconnection Box
Cold Box
WarmCompressor
Station
LowerCold Box
Distribution Line Distribution Line
Magnet Cryostats, DFB, ACS Magnet Cryostats, DFB, ACS
ColdCompressor
box
Nitrogen TanksDryer for adsorbersMP Buffer
Refrigeration plants
6
Refrigeration @ 1.8 K(2.4 kW @ 1.8 K)
Réfrigeration @ 4.5 K(18 kW @ 4.5 K)
Courtesy to L. Tavian
Process Control Object decomposition
Identify Process Control Objects (PCO) Defined as units or Equipment modules in IEC 61512-1 Collection of actuators and/or other units Can carry out a finite number of processing activities Contains all the necessary equipments to carry out these activities Can execute procedural sequences Can drive other PCO Can be driven by another PCO
A “Top PCO” is a PCO without master Driven by operator to start/stop the complete plant
Example of PCO : A Compression Station : 2 compressor + 4 valves
8
Process Decomposition : Top PCOs
MP Buffer
Interconnection BoxSector (Magnets)
Refrigerator @ 4.5 K
Refrigerator @ 1.8 K
Process Decomposition : 2nd PCO layer
Warm Compression
StationCold-Box @ 4.5 K
MP Buffer
Interconnection BoxSector (Magnets)
Cold-Box @ 1.8K
Sector Refrigeration Plant
Warm Compressionstation
Refrigerator @ 4.5 K
Refrigerator @ 1.8 K
ARC SectionLong Straight Section
3rd PCO layer in a compression station
11
High Stage
Compression Station
Boosters
Pressure Control
Connect
Oil LP
Oil HP
3rd PCO layer in a cold-box @ 4.5K
12
Precooler
T23
T45
T67
T89
TA
Shields
Adsorber1
Adsorber3
Connect CB
Vaccum
Adsorber2
Cold-Box @ 4.5K
Helium Main Flow
LoadInterface
I/O Objects
UNICOS break down in PLC
Device Type = Object Class
PLC instance SCADA Instance
Equipment modules/Units Process Control Objects (PCO)
Control modules Field Objects
I/O acquisition I/O Objects
Operation team must be able to act on each object
In degraded operation conditions operation crew can overcome process logic requests Field Objects Control
Objects
I/O
Board
s
ControlValve
Equ
ipm
ent
mod
ule
(Tur
bine
1)
AI position
AO position
ControlValve
DI End switch
DO position
OnOffValve
Equ
ipm
ent
mod
ule
(Ads
orbe
ur)
UN
IT (
CR
YO
PL
AN
T)
CP
O
Equ
ipm
ent
mod
ule
(C
old
Box
)
E
quip
men
t M
odul
e(C
ompr
esso
r S
tatio
n)
AI position
AO position
Specification Document Set
18
Requirement documents
Process & Instrumentation DiagramInstrument List(1)
Functional Analysis(1)
Design documents
UNICOS xml specification1
UNICOS Logic Templates1
PLC code SCADA objects
P
C
1 : Template provided by CERN-EN-ICE
Generators + C
What is a good set of specifications?
Easy to understand for other people Terminology/Acronyms definitions “Comments” in documents
Easy to find particular information Same place according to information type Limit cross references in documents
Easy to modify Information located at a unique place No doubloons
19
Functional Analysis
Descriptive document Oriented for Continuous Process Control (CPC) Exhaustive document No PLC language inside No platform oriented Structured English, drawings and diagrams can be used Hierarchically oriented
Describe the automatic behavior of the process General description of process Decomposition of the process into control units Exhaustive descriptions for each control unit
Actuator behaviors Regulation loops Alarms and interlocks Possibilities given to operators