EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page (ix)
GLOSSARY
/h Per hour
°C Degrees Celsius
ADS Approved Dosimetry Service (or System)
CRC Cyclic Redundancy Check. Error checking code.
dB(A) Decibels - ‘A’ weighted scale (sound intensity)
DC Direct Current
DDE Deep Dose Equivalent (alternative nomenclature for H
p
(10))
Dose The accumulated dose to which alarm thresholds apply, intended for
tactical dose monitoring (eg. per day, per week, per shift etc)
Double-press Pressing the button twice in quick succession
EEPROM Electrically Erasable Programmable Read Only Memory
EPD Electronic Personal Dosemeter
EPDS Electronic Personal Dosimetry System
eV Electron Volt
Gy Gray, SI unit of dose
HEX Hexadecimal
H
10
EPD LCD nomenclature for personal dose (Hp(10))
H
07
EPD LCD nomenclature for personal dose (Hp(0.07))
H
10
/h EPD LCD nomenclature for dose rate (Hp(0.07)/h)
H
07
/h EPD LCD nomenclature for dose rate (Hp(10)/h)
Hp(10) Personal dose equivalent at a depth of 10mm of tissue (‘penetrating’,
‘deep’ or ‘whole body’ dose).
H
p
(0.07) Personal dose equivalent at a depth of 0.07 mm of tissue (‘superficial’,
‘shallow’ or ‘skin’ dose).
Hp(10)/h Hp(10) dose rate
Hp
(0.07)/h Hp(0.07) dose rate
ICRU International Commission on Radiation Units
ID Identification
IR Infra-red
IrDA Infra-red Data Association
keV Kilo Electron Volt
LCD Liquid Crystal Display
LED Light Emitting Diode
Long Press Pressing and holding the button
LTC Lithium Thionyl Chloride (Sulphurous Oxychloride, SOCl
2
)
MeV Mega Electron Volt
m metre/milli
mm millimetre
nm nanometre
NRPB National Radiological Protection Board - the statutory authority for
radiological protection in the UK
PCB Printed Circuit Board
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