MGP Instruments SOR/R User Manual

User's Manual

SOR

ELECTRONIC DOSIMETER

MGP Instruments
BP 1
F-13113 Lamanon
Tél. : [phone]
Fax : [phone]
E-mail : [e-mail]

MGP Instruments Inc.
5000 Highlands Parkway, Suite 150
Smyrna, Georgia 30082
Tel : [phone]
Fax : [phone]
E-mail : [e-mail]

Issue: January 2004

N° 129442A

TABLE OF CONTENTS

CHAPTER I - CHARACTERISTICS ..................................... 5

1.1 - GENERAL CHARACTERISTICS............................... 5

1.1.1 - Purpose of the equipment .................................. 5

1.1.2 - Layout of the SOR/R electronic dosimeter........ 5

1.1.3 - Recommended operators ................................... 9

1.2 - DIMENSIONS............................................................. 9

1.2.1 - SOR/R electronic dosimeter ............................... 9

1.3 - ENVIRONMENTAL CHARACTERISTICS ................. 9

1.4 - ELECTROMAGNETIC ENVIRONMENTAL

CONDITIONS........................................................... 10

1.5 - RADIATION EFFECTS ............................................ 10

1.6 - PERFORMANCE...................................................... 10

1.6.1 - Start-up............................................................... 10

1.6.2 - Warm-up............................................................. 10

1.6.3 - Deactivation ....................................................... 10

1.6.4 - Data storage....................................................... 11

1.7 - ENVIRONMENTAL LIMITATIONS........................... 11

1.8 - SAFETY RULES RELATING TO

THE EQUIPMENT.................................................... 11

1.9 - PERSONNEL SAFETY ............................................ 11

CHAPTER II - USE IN NORMAL CONDITIONS ................ 13

2.1 - PROCEDURES AND PRELIMINARY CHECKS...... 13

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2.2 - INSTRUCTIONS FOR USE...................................... 13

2.2.1 - Preliminary checks............................................ 13

2.2.2 - Operating checks .............................................. 13

2.2.3 - Dosimeter / Reader-Recorder interaction........ 13

2.2.4 - Data stamping.................................................... 14

2.2.5 - Storage - Pause - Measurement ....................... 14

2.3 - CHECKS .................................................................. 18

2.3.1 - Hands-free mode ............................................... 18

2.3.2 - Manual read mode ............................................. 19

2.3.3 - Serial link............................................................ 19

2.4 - ALARMS .................................................................. 19

2.4.1 - Buzzer................................................................. 19

2.4.2 - Threshold alarms with acknowledgement....... 20

2.4.3 - Alarm without cancellation option ................... 21

CHAPTER III - TROUBLESHOOTING ............................... 23

CHAPTER IV - MAINTENANCE......................................... 25

4.1 - MAINTENANCE ....................................................... 25

4.2 - RADIOLOGICAL DECONTAMINATION.................. 26

4.2.1 - Recommended tools and materials ................. 26

4.2.2 - Preliminaries to be carried out by personnel.. 26

4.2.3 - Equipment decontamination ............................ 26

4.3 - CHEMICAL DECONTAMINATION .......................... 27

4.3.1 - Recommended means....................................... 27

4.3.2 - Preliminaries to be carried out by personnel.. 28

4.3.3 - Equipment decontamination ............................ 28

FIGURES

Figure n° Page

1 - Layout of the SOR/R Electronic Dosimeter ........... 7

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CHAPTER I

CHARACTERISTICS

1.1 - GENERAL CHARACTERISTICS

1.1.1 - Purpose of the equipment

The SOR/R electronic dosimeter is used for measuring
several types of radiation to which the user may be
exposed:

− Ambient and articial X and Gamma,

− Residual Gamma,

It is a rugged equipment specically designed to fulll
the military forces operational conditions.

An original hands-free mode enables the data
exchange with the XOM/R reader even through the
NBC clothes.

1.1.2 - Layout of the SOR/R electronic dosimeter

The SOR/R electronic dosimeter is equipped with a
protective dust and liquid-proof casing.

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According to the options selected, it can be tted with a
lanyard for chest wear, a velcro arm band to be worn
over the protective clothing, or a clip.

−

The front panel of the SOR/R electronic dosimeter
includes:

• an LCD (A) for data and user id display,

• a pushbutton (B) for data selection and alarm

acknowledgement,

• a smart-card type connector(C),

• a buzzer (audible alarm) (D).

− The rear panel includes:

• battery access via a screwed-on cover (E). The

cover includes a slot for screwing/unscrewing
using a coin or at-blade screwdriver,

• an identication label (F).

− The top of the unit includes a hole for inserting the

lanyard (G) and a fastener (H) for safety release.
A groove is also included for attaching the clip.

1.1.2.1 - Display

The dosimeter can display 6 alphanumeric
characters.

It is designed for easy display reading.

The display can also be equipped with an optional
back-lighting system.

It can also be blanked.

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A – Display F – Identication label
B – Pushbutton G – Lanyard
C – Connector H – Fastener
D – Buzzer J – Clip
E – Battery cover K – Arm band

Figure 1 – Layout of the SOR/R electronic dosimeter

G

H

B

C

A

D

E

F

J

K

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8

To read the display:

The operator must raise the dosimeter horizontally if
it is worn around the neck.

The operator must hold up his arm if the dosimeter
is worn on the arm band.

1.1.2.2 - Pushbutton

The pushbutton enables display of the following
information:

− The operator's name when pushed once,

− The equivalent dose output when pushed twice

(according to conguration).

It enables cancellation of:

− The lower dose alarm buzzer (pre-alarm) when

held down for over 3 seconds,

− The dose rate alarm buzzer when held down for

over 3 seconds (according to conguration).

1.1.2.3 - Connector

The connector enables connection to the XOM/T
reader-recorder and to external devices.

1.1.2.4 - Buzzer

The buzzer sound level pressure 80 dB to 90 dB at
30 cm in front of the dosimeter. Frequency is 5.5 to

5.8 kHz.