ESS Naming Convention - Lunds universiteteval.esss.lu.se/DocDB/0002/000229/013/ESS Naming... · •...
Transcript of ESS Naming Convention - Lunds universiteteval.esss.lu.se/DocDB/0002/000229/013/ESS Naming... · •...
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ESS Naming Convention
Karin Rathsman2013-05-22
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Introduction
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ESS Naming Convention
Naming Convention
Revision: 1.2
Status: Accepted Project: ESS Naming Convention
Document ID: ESS/AD/0005 File: ESS Naming Convention.doc
Owner: Garry Trahern Last modification: Maay 17, 2011
Created: October 26, 2010
ESS Naming ConventionThe ESS Naming Convention apply to all devices and signals in technical systems and conventional facilities.
• operator screens• inventory system• drawings • design schematics • computer software • project databases• equipment name tags • test procedures• other sources of technical
information at ESS.
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History
ESS Naming Convention is based on a standard developed for the Super Superconducting Collider (SSC) and later adopted to other large research facilities: • Spallation Neutron Source (SNS)• Facility for Rare Isotope Beams (FRIB)• International Thermonuclear
Experimental Reactor (ITER)• Continuous Electron Beam Accelerator
Facility (CEBAF)
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Syntax
SSSS SystemBBBB SubsystemDDDD Device IdentifierIII Device QuantifierTTT Signal typeIII Signal instanceXXX Signal Suffix
Device NameSignal Name
SSSS-BBBB:DDDD-III:TTTIIIXXX
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MotivationMillions of signals to control and thousands of devices to operate:
• Short, meaningful and structured names needed for communication and configuration.
• Can’t rely on high level industrial HMI (barcodes, touch screens, etc.) to operate the facility.
• Industry standards for naming not applicable- Not human readable. - One of the kind facility.
A uniform naming convention for ESS will help enforce system integration activities across all divisions.
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Act Proactively• Establish a naming convention at an early stage
of the project. • Assign a Naming Czar
- Form naming committee- Assure consistency- Coordinate - Update the naming convention document.
• Communicate, communicate and communicate...- Accelerator, Target, Neutron instruments, Conventional
Facilities, Utilities etc. • Develop a naming tool
- Collect requirements from stakeholders- Name support- Enforce syntax- Assure unique names
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Guidelines
• Names shall be short, yet meaningful and organised consistently.
• Name structure does not need to follow WBS, PBS or other project management structures.- These are mainly for optimising design and
construction. - Device names should however be used to name
equipment in these structures.• Database integration is vital.
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Devices
From the ICS point of view, all equipment is modeled as devices
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DefinitionDevice is the basic unit of granularity of the ICS the smallest that can still be standalone and loosely coupled to other components.• Device is an abstraction that can
represent either single pieces of equipment (low level code for interfacing with the hardware) ...
• ...or higher-level entities of the ICS ( e.g., device models, subsystems, instruments...)
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… and this is also a device
This is a device...
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Devices Inside Devices Devices are not organised hierarchically through the naming convention. Example: • There are four cavities inside a cryomodule.
Both cryomodule and cavities are devices.The structure are found in other systems where the names are used.
HB-Res:Cav-01a
HB-Res:Cmd-01
HB-Res:Cav-01bHB-Res:Cav-01c
HB-Res:Cav-01d
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Concurrent Conventions
Having parallel conventions for mnemonic names will inevitably cause confusion.
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Identification codes
Devices at ESS will be assigned several identification codes in for example • Work break down structure (WBS),• Project break down structure (PBS) • Inventory • BSAB 96 codes (conventional facilities).
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Restrictions
To avoid confusion equipment identification codes other than device and signal names must not• be mnemonic, i.e. it shall not contain
abbreviations or acronyms. • simulate the naming convention syntax.
Device names shall be used in other systems as attributes.
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Device Category Structure
Expect thousands different kind of devices. Devices are categorised on three levels in the naming convention.
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Level 1 – DisciplineBranch of knowledge that indicates the context in which a device is used, Example:• Vacuum (Vac)• Water Cooling (WtrC)• Cryogenics (Cryo)• Proton Beam Instrumentation (PBI)• Proton Beam Optics (PBO) • Controls (Ctrl)
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Level 2 – Generic Device TypeTwo devices of the same generic type provide the same functionExample:• Pump (Pmp)• Controlled Valve (CV)• Temperature Sensor (TSn)
These are interdisciplinary devices of e.g. Vacuum, Cryogenics as well as Water Cooling.
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Level 3 – Specific Device Type
Two devices of the same specific type are identical from a controls perspective and among others have the same set of control signals. • Configuration of a device in the top-
down approach is initiated by selecting the specific device type.
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Device Identifiers
Naming convention users prefer to use generic device type (level 2) as device identifier DDDD in the names. Therefore:• Device names will be constructed using
the generic device identifier (Level 2).• Naming Convention users are still
responsible for selecting the correct specific device type (Level 3).
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Area Breakdown Structure
Zones, buildings and sections shall be named and labelled after the technical systems so that device and signal names can be linked to physical location.
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Level 1 – Super Section
High level zones and buildings such as• Accelerator• Target Station• Neutron Science • Utilities
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Level 2 – Section13 Accelerator Sections:
• Ion Source (ISrc)• Low Energy Beam Transport (LEBT)• …. • Dump Line (DmpL)
16 Target Systems:• Monolith (Mnlt)• Active Handling (ActH)
Neutron Science InstrumentsUtilities Plants.
• Water Cooling Plant (WCP)• Cryo Plant (CP)
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Level 3 – SubsectionAccelerator has numbered subsections e.g.,• First HB subsection (HB-01)• Thirties HB subsection (HB-30)
Target Station has 80 subsections in total, for example• Water purification system (ActF-WtrP)• Active gas storage (ActF-Gsg)
Utilities• High Beta Water Substation (WCP-HBWS) is
a subsection under the Water Cooling Plant.
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Labelling
• Conventional facilities have agreed to label the structures according to the section-subsections.
• The numbering system used by CF as identifications for buildings, rooms and sections, is independent on the ESS Naming Convention.
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Name Construction
All information needed to construct device names (except for the quantifier III)is contained in the device category and area breakdown structures.
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Complication...Target and accelerator, are both complex systems and structurally very different.• Accelerator have many devices of
several disciplines in a repetitive pattern • Target has a large fraction of unique
equipment. Having managed to consistently name devices for both target and accelerator we are confident that other parts of the facility can be named using the same underlying structures and tools.
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Target has a PBS organised in two levels referred to as• System-Subsystem by the target
devision.• Section-Subsection in the Area
Breakdown Structure Devices like pumps, valves etc., appear in many subsystems.There is no desire to use discipline in the name.
Target
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Accelerator
There are many devices of the same kind in the accelerator in a repetitive pattern.• The accelerator is divided into sections
and numbered subsections • Each subsection contains many devices
of different disciplines.- Resonators, Vacuum, Beam Optics, etc..
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BLM
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HB-03! HB-04!HB-01! HB-02!
HB-07! HB-08!HB-05! HB-06!
HB-23! HB-24!HB-21! HB-22!
HB-15! HB-16!HB-13! HB-14!
HB-19! HB-20!HB-17! HB-18!
HB-11! HB-12!HB-09! HB-10!
HB-27! HB-28!HB-25! HB-26!
HB-29! HB-30!
Accelerator Section-Subsection
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Two types of sectionsAccelerator and Target divisions agree to use • section names as systems names SSSS• generic device type as device identifier DDDD.
Therefore, systems SSSS (sections) are assigned either as • Accelerator type (A-type) • Target-type (T-type)
with different methods to construct names
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Naming ProcessDevice Category Structure
Level 1Level 2
Level 3
Area Breakdown Structure
Level 3Level 2
Level 1
Name Components
Tools Rules
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Name Components
System SSSS • Section convention name
Subsystem BBBB• T-type: Subsection convention name• A-type: Discipline convention Name
Generic Device Identifier DDDD • Generic device identifier
Device Quantifier III • T-type: Alphanumeric characters• A-type: Subsection number immediately followed by
alphabetic numbering (a, b, c or d etc.)
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Tools
Web-based tools are under development to support the process of naming devices. Use-cases are being studied to collect requirements, e.g., filtering and sorting capabilities, as well as automated name generation.
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Name IntegrityTo assure integrity of names the naming convention users will be asked to select1.device type from the three level device
category structure 2.subsection from the three level area
break down structure Device names are generated automatically, except for quantifier. User do not need to keep track of whether a device name is generated as A or T-type
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Selection tool
Users should not have to be informed in detail on definitions of section, subsection, discipline or the distinction between generic and specific device types.• Ask explicitly: Which part of the facility
does the device provide services to?- Do NOT ask: Where is the device located?
• The answer shall be selected from a menu type list.
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<Select><Select><Select>
Controls Ctrl ▶
Conventional Facilities CF ▶
Cryogenics Cryo ▶
Proton Beam Instrumentation PBI ▶
Proton Beam Optics PBO ▶
Resonators Res ▶
Vacuum Vac ▶
Water Cooling WtrC ▶ Control Valve CV ▶ Gate Valve GV
Pressure Safety Valve PSV ▶
Isolation Safety Valve ISV ▶
Manual Valves STn ▶
Limit Switch LSw ▶
In Device Naming Tool Select device type:
Specific Type
Discipline
Generic Type Device Identifier
Convention Name
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In the Device Naming Tool
<Select><Select>
Accelerator ▶
Target Station ▶
Neutron Instruments ▶
Utilities ▶ Cryogenics Plant CrP ▶
Water Cooling Plant WCP ▶ Central Utilities Water Station CUWS
Compressed Air Plant CAP ▶ Low Beta Water Station LBWS
Medium Beta Water Station MBWS
High Beta Water Station HBWS
Target Water Station TWS
Neutron Instruments Water Station NIWS
HEBT Etcetera Water Station HEWS
External Customers Water Station ECWS
Compressed Air Water Station CAWS
Which part of the facility does the device provide service to?
Section
Subsection
Super Section
Convention nameConvention name
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General rules for namesThe naming tools shall ensure the following rules to be fulfilled.1.Convention names for section, subsection,
discipline, generic device type and signal part of names shall be alphanumeric.
2.First character of convention names for section, T-type subsection, discipline, generic device type and signal part of names as well as quantifier for A-type devices shall be alphabetic.
3.Convention name for A-type subsection shall be numeric.
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General rules for names (cont)4. Convention names for section, discipline, device
name and signal name shall be unique irrespective of1. Letter case2. Letters I, l and number 13. Letter O and number 04. Letters V and W5. Leading zeros, i.e., number 0 immediately following a non-
numerical character5. Convention names for subsection and generic
device type shall be unique according to rule number 4, however only within the same section and discipline, respectively.
6. Leading zeros shall be used to ensure that all numbers have the same number of digits.
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”Those are my principles. If you don’t like them I have others.”
Groucho Marx
The End