DRC-2024-007434

CLIVE SITE
LETTER OF TRANSMITTAL DATE: 10/24/2024 ATTN: LLRW
CC; Treesa Parker Karen Kirkwood RE: Transmittal 2024-079
Description of Documents Transmitted Qty
See attached for update to Instruments. CL-IN-PR-436 Rev 5, Use and Maintenance of Electronic Dosimeters 1

------------------------------------------------------------------------------------------------------------ Please replace your current procedure revisions with the documents within this Transmittal. You are not required to sign any documents to verify receipt of this distribution. However, you should make every effort to ensure that your copy of the License is current. FROM: EnergySolutions
Document Control Clive Facility

Electronic documents, once printed, are uncontrolled and may become outdated.
Refer to the Intranet or the Document Control authority for the correct revision.
CL-IN-PR-436

Use and Maintenance of Electronic
Dosimeters
Revision 5

Authored By:
Mark White, Radiation Safety Specialist Date
Reviewed By:
Dale Thorne, Lead, Health Physics/ARSO Date
Approved By
Stephen Long, Lead, Health Physics/ARSO Date
Approved By
Thomas A. Brown, Radiation Safety Officer (RSO) Date

Non-Proprietary New
Proprietary Title Change
Restricted Information Revision
Safeguards Information Rewrite
Sensitive Security Information Cancellation

Mark White Digitally signed by Mark White
Date: 2024.10.24 12:13:47 -06'00'
Dale Thorne Digitally signed by Dale Thorne
Date: 2024.10.24 13:13:13 -06'00'
Stephen J. Long Digitally signed by Stephen J. Long
Date: 2024.10.24 14:37:13 -06'00'
Digitally signed by Thomas Brown
DN: OU=Health Physics, O="EnergySolutions, LLC", CN=Thomas Brown, E=[e-mail]
Reason: I am approving this documentLocation: Clive
Date: 2024-10-24 14:56:10
Foxit PhantomPDF Version: 9.7.5
Thomas Brown
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 2 of 9
Table of Contents

1 PURPOSE AND SCOPE ........................................................................................................ 3
1.1 Purpose........................................................................................................................... 3
1.2 Scope............................................................................................................................... 3
2 REFERENCES ....................................................................................................................... 3
3 GENERAL .............................................................................................................................. 3
3.1 Definitions ...................................................................................................................... 3
3.2 Responsibilities .............................................................................................................. 3
3.3 Precautions and Limitations ........................................................................................ 4
3.4 Records........................................................................................................................... 4
4 REQUIREMENTS AND GUIDANCE .................................................................................. 4
5 ATTACHMENTS AND FORMS........................................................................................... 7
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 3 of 9

1 PURPOSE AND SCOPE
1.1 Purpose
This procedure is designed to provide instructions for use and maintenance of
electronic dosimeters.
1.2 Scope
This procedure applies to all personnel using or performing maintenance on
electronic dosimeters.
2 REFERENCES
2.1 DMC User Manual
2.2 ES-SH-PR-305, Hearing Conservation
2.3 UT-2300249, Utah Radioactive Material License
3 GENERAL
3.1 Definitions
3.1.1 Pause Mode - The dosimeter is in the pause mode, while the dosimeter is
not being used, to conserve battery life.
3.1.2 Dosimeter - A portable instrument for measuring and registering the total
accumulated exposure to ionizing radiation.
3.2 Responsibilities
3.2.1 The Radiation Safety Officer (RSO) or designee is responsible for overall
radiation safety and compliance with state and federal regulations.
3.2.2 Assistant Radiation Safety Officer (ARSO) or designee is responsible for
the overall implementation and accuracy of this procedure. The ARSO is
responsible for providing the personnel and resources necessary to
implement this procedure.
3.2.3 Health Physics Instrumentation Technician (HPIT) or designee is
responsible for maintaining calibration and maintenance records for
electronic dosimeters. The HPIT is responsible for ensuring that all
electronic dosimeters, in use, are calibrated annually.
3.2.4 Users are responsible for proper use of electronic dosimeters. Users are
responsible for maintaining the dosimeter on their person in the location
prescribed by the Radiation Work Permit (RWP) and responding to all
alarms as described in this procedure and/or the RWP governing the work
evolution.
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 4 of 9

3.2.5 Radiation Safety Technician (RST) is responsible for issuing electronic
dosimeters in accordance with RWP requirements and removing
dosimeters from service which require calibration or maintenance.
3.2.6 Dosimetry Technician is responsible for tracking exposures to ionizing
radiation.
3.3 Precautions and Limitations
3.3.1 When cleaning is necessary, wipe the electronic dosimeter with a cloth
dampened with a mild detergent solution.
3.3.2 Do not place tape directly over the speaker port on the face of the
dosimeter.
3.3.3 In high noise areas, the audible dose or dose rate alarm might not be heard.
In these situations, frequent visual checks of the dosimeter are necessary.
3.3.4 Use the following as guidelines for evaluating potential high noise
conditions:
WHEN AT YOUR WORK LOCATION, YOU: THEN:
… cannot carry on a conversation at a normal
volume of voice when you are 3 feet apart.
… you are in a hazardous
noise environment.
Frequent visual checks of
the dosimeter are
necessary.
… cannot clearly hear the audible alarm.
Note: When a high noise condition exists hearing protection
may additionally be required in accordance with ES-
SH-PR-305, Hearing Conservation.
3.3.5 Exposing electronic dosimeters to certain equipment or conditions may
result in false dose results and alarms. These include but are not limited to:
• Certain welding operations. These alarms are typically a result of
poor grounding to the welder.
• Extreme vibration of the dosimeter. Avoid contact of the dosimeter
with power tools that could produce such vibrations.
• Equipment or tools that create strong electromagnetic fields.
NEVER place electronic dosimeters on or near wireless charging
stations.
3.3.6 The electronic dosimeters give audible, visual, and vibration alarms.
3.4 Records
None
4 REQUIREMENTS AND GUIDANCE
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 5 of 9

4.1 Pre-Operation
4.1.1 Examine the dosimeter for any obvious physical damage that could
interfere with its proper operation.
4.1.2 When cleaning is necessary, wipe the dosimeter with a cloth dampened
with a mild detergent solution.
4.1.3 When obtaining an electronic dosimeter from the stock, the unit will be in
the pause mode (i.e., all circuitry will be shut down and it will display
either PAUSE or the calibration due date) to maximize battery life. To
bring a dosimeter out of pause mode, place the dosimeter on the dosimeter
reader.
4.1.4 Verify that the display shows the calibration due date or PAUSE. If the
display shows anything besides these two items (“b:At dEF,”, “LOW
bAt”, etc) then notify the Radiation Safety Control Point personnel.
4.1.5 If during use the display shows “:bAt--” with a number between 0 and 9
after it (the number represents the number of battery life hours remaining),
continue to work as long as there are sufficient battery life hours
remaining to cover the time before your expected exit and notify the
Radiation Safety Control Point personnel of the condition upon exit. If
there are insufficient battery life hours remaining, exit the area and notify
the Radiation Safety Control Point personnel of the condition upon exit.
4.2 Manual Issuance of Dosimeter
4.2.1 IF the electronic Access Control System is not operable or for visitors
who are not in the electronic data base manual issue of electronic
dosimeter is permissible.
4.2.2 OBTAIN the dosimeter from the storage location.
4.2.3 VERIFY that the dosimeter displays the calibration due date or PAUSE in
the readout window.
4.2.3.1 IF calibration is overdue, RETURN the dosimeter to the
Radiation Safety Technician at the Access Control Point
and OBTAIN another that is in current calibration.
4.2.4 The Radiation Safety Technician at the access control point will
PERFORM the following:
4.2.4.1 OPEN the DMC User program on the Access Control PC.
4.2.4.2 SELECT the Batch In / Out tab.
4.2.4.3 CLICK the Start button to begin.
4.2.4.4 PLACE the dosimeter onto the manual reader attached to
the Access Control PC.
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 6 of 9

4.2.4.4.1 ENTER Dose Alarm Set Point, Rate Alarm Set
Point, and Time Interval Set Point specified in
applicable Radiation Work Permit (RWP).
4.2.4.5 CLICK the In button to start the measurement mode.
4.2.4.6 VERIFY that Cal due date or PAUSE has been replaced by
“0.0” in the display window.
4.2.4.7 RETURN the dosimeter to entrant personnel.
4.2.5 IF an instrument does not satisfy the pre-operational criteria, or fails to
perform properly during use,
4.2.5.1 EXIT the area and NOTIFY Radiation Safety.
4.2.5.2 The Radiation Safety Technician will TAG the unit “Out
of Service” and RETURN it to the Instrument Lab.
4.3 Electronic Issue of Dosimeter
4.3.1 OBTAIN the dosimeter from its storage location.
4.3.2 VERIFY that calibration is current.
4.3.3 PLACE the dosimeter onto the reader to begin the entry process.
4.3.4 FOLLOW the prompts on the screen.
4.3.5 WHEN the Electronic Entry Control System authorizes entry, REMOVE
the dosimeter from the reader.
4.3.6 VERIFY that Cal due date has been replace by “0.0” in the display
window.
4.3.7 IF an instrument does not satisfy the pre-operational criteria, or fails to
perform properly during use:
4.3.7.1 EXIT the area and NOTIFY Radiation Safety.
4.3.7.2 The Radiation Safety Technician will TAG the unit “Out of
Service” and RETURN it to the Instrument Lab.
4.4 Alarming Dosimeters
4.4.1 Alarms are preset in the dosimeter at the time of entry.
4.4.2 The electronic dosimeters give audible, visual, and vibration indications of
alarm conditions.
4.4.3 IF you hear audible alarms, EXIT the area immediately and CONTACT
Radiation Safety personnel.
Note: If the dosimeter had an alarm, a message will appear on
the screen describing the event.
CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 7 of 9

5 ATTACHMENTS AND FORMS
5.1 Electronic Dosimeter User Instructions

CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 8 of 9

Attachment 5.1 - Electronic Dosimeter User Instructions

Every individual is responsible for understanding how the electronic dosimeter operates.
Consult Radiation Safety personnel as necessary.
Examine the dosimeter for damage, which might interfere with its operation. If damage is
observed or suspected, return the dosimeter to Radiation Safety.
When obtaining an electronic dosimeter from the Access Control point, verify that the
display shows the calibration due date or PAUSE. If the display shows anything besides
these two items (‘b:At dEF”, “LOW bAt”, etc) notify the Radiation Safety Control Point
personnel.
Place the dosimeter on the upper body, near the TLD. The location should be such that it
can be easily viewed and heard at any time.
If during use the display shows “bAt--” with a number between 0 and 9 after it (the number
represents the number of battery life hours remaining), continue to work as long as there are
sufficient battery life hours remaining to cover the time before your expected exit and notify
the Radiation Safety Control Point personnel of the condition upon exit. If there are
insufficient battery life hours remaining, exit the area and notify the Radiation Safety
Control Point personnel of the condition upon exit.
If the dosimeter is dropped during use, CONTACT RADIATION SAFETY
IMMEDIATELY.
WHEN AT YOUR WORK LOCATION, YOU: THEN:
…cannot carry on a conversation at a normal volume
of voice when you are 3 feet apart. … you are in a hazardous noise
environment. Frequent visual
checks of the dosimeter are
necessary. … cannot clearly hear the audible alarm.
NOTE: When a high noise condition exists hearing protection may additionally be
required in accordance with ES-SH-PR-305, Hearing Conservation.
If you hear an audible alarm, leave the area immediately and contact Radiation Safety
Personnel.

CL-IN-PR-436
Use and Maintenance of Electronic
Dosimeters
Revision 5

Non-Proprietary Page 9 of 9