See below commonly used Functional Safety acronyms, abbreviations and titles to assist you in your work and study. For more help contact us on 01462 713313 or support@methodfs.com.
ALARP
As Low As Reasonably Practicable
ANSI
American Institute of Engineers
AP
Application Program
β
Beta Factor proportion of Random Hardware Failures attributable to Common Cause
BMS
Burner Management System
BPCS
Basic Process Control System
BS EN
Prefix for standards adopted by BSI
CASS
Conformity Assessment of Safety related Systems
CCPS
Centre for Chemical Process Safety (AIChE)
CDOIF
Chemical and Downstream Industries Forum
COMAH
Control of Major Accident Hazards
DC
Diagnostic Coverage
DD
Dangerous Detected
DSEAR
The Dangerous Substances and Explosive Atmospheres Regulations 2002
DU
Dangerous Undetected
E/E/PE
Electrical / Electronic / Programmable Electronic
EEPROM
Electrically Erasable Programmable Read-Only Memory
ESD
Emergency Shutdown System
ETA
Event Tree Analysis
F&G
Fire and Gas
FAT
Factory Acceptance Test
FIT
Failure In Time (E10-9 per hour)
FPL
FPL Fixed Programme Language
FMEA
Failure Mode and Effects Analysis
FMECA
Failure Mode Effects and Criticality Analysis
FMEDA
Failure Mode Effects and Diagnostics Analysis
FPL
Fixed Programming Language
FSA
Functional Safety Assessments
FSE
Functional Safety Expert / Engineer
FSM
Functional Safety Management
FSMS
Functional Safety Management System
FSP
Functional Safety Professional
FTA
Fault Tree Analysis
FVL
Full Variability Language
HAZAN
Hazard Analysis
HAZID
Hazard Identification Study
HAZOP
Hazard & Operability Study
HAZOP and LOPA TrainingSee our Process Safety Training courses at www.methodprosafe.com
H&RA
Hazard & Risk Assessment
HFT
Hardware Fault Tolerance
HIPPS
High Integrity Pressure Protection System
HMI
Human Machine Interface (HMI)
HSE
Health and Safety Executive
IEC
International Electrotechnical Commission
IEC 61508
A standard published by the International Electrotechnical Commission detailing the rules to be applied to the design and use of: 'Functional safety of electrical / electronic / programmable electronic safety - related systems'
IEC 61511
A standard published by the International Electrotechnical Commission titled: 'Functional Safety - Safety Instrumented Systems for the Process Industry'
Instrument Technicians TrainingSee our Functional Safety training for Technicians at www.methodfs.com/technicians
ISA
International Society of Automation
ISO
International Organization for Standardization
λ
Lambda typical symbol for Failure Rates
LOPA
Layer of Protection Analysis
LVL
Limited Variability Language
MAH
Major Accident Hazard
MoC
Management of Change
Markov Tool
A probabilistic calculation tool used to analyse failure rate or probability of safety-related systems. It is based on the probability theory developed by the Russian Mathematician Andrei Markov.
MooN
The number of independent paths (M) required out of the total number existing paths (N) in order to perform the Safety Function
MPRT
Maximum Permitted Repair Time
MRT
Maximum Repair Time
MTTR
Mean Time to Restoration
NFPA
National Fire Protection Association(US)
NP
Non Programmable
O&G
Oil & Gas
OEM
Original Equipment Manufacturer
OG
Operational Guidance (provided by the HSE)
OHA
Operability Hazard Analysis
OREDA
A Project Organisation which aims to collate and share reliability data between its members on offshore products.
P&ID
Piping & Instrumentation Diagram
PDS
A Norwegian acronym for the 'Reliability of Computer based Safety Systems'. The PDS Forum is a consortium with the objective of sharing information between the whole value chain with the aim of improving safety systems.
PE
Programmable Electronics
PERD
Process Equipment Reliability Data
PES
Programmable Electronic System
PFDavg
Probability of Failure on Demand Average
Functional Safety ConsultancySpecialist Consultants across all phases of the lifecycle at www.methodfs.com/consultancy
PFH
Probability (of dangerous failures) of Failure per Hour
PHA
Process Hazard Analysis
QRA
Quantitative Risk Analysis
RRF
Risk Reduction Factor
SAT
Site Acceptance Test
SC
Systematic Capability
SCADA
Sequence Control & Data Acquisition
SFF
Safe Failure Fraction
SIF
Safety Instrumented Function
SIL
Safety Integrity Level
SIS
Safety Instrumented System
SRS
Safety Requirements Specification
STL
Spurious Trip Level
T-Book
Reliability data of components in Nordic nuclear power plants
TIFALARP
Tolerable If As Low As Reasonably Practicable (see ALARP)
TLA
Three Letter Abreviation (!)
ToE
Target of Evaluation
TUV
Technischer
Überwachungsverein (Technical Inspection Association)
TUV Certified 61511 trainingTUV Certified Functional Safety training in IEC 61511 at www.methodfs.com/61511
V&V
Verification and Validation
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