EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page 87
APPENDIX A
RADIOLOGICAL SPECIFICATIONS
The following specifications quoted apply under standard conditions of 20°C.
Energy response
♦ Photon Hp(10) ±50% 15keV to 17keV (Ref. Cs-137)
±20% 17keV to 1.5MeV (Ref. Cs-137)
±30% 1.5MeV to 6MeV (Ref. Cs-137)
±50% 6MeV to 10MeV (Ref. Cs-137)
♦ Photon Hp(0.07) ±30% 20keV to 6MeV (Ref. Cs-137)
±50% 6MeV to 10MeV (Ref. Cs-137)
♦ Beta Hp(0.07) ±30% 250keV to 1.5MeV average beta energy (ref: Sr-90)
Angular response
♦ Hp(10) Cs-137 ±20% up to ±75°
♦ Hp(10) Am-241 ±50% up to ±75°
♦ Hp(0.07) Sr-90 ±30% up to ±55°
Accuracy
♦ Hp(10) Cs-137 ±10%
♦ Hp(0.07) Sr-90 ±20%
Dose rate linearity
♦ Hp(10) Cs-137 ±10% <0.5Sv/h
±20% 0.5Sv/h to 1Sv/h
±30% 1Sv/h to 2Sv/h
♦ Hp(0.07) Sr-90 ±20% <1Sv/h
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