Browns Ferry is currently diving in the equipment pit cutting up the Steam 
Dryer and we are using 8 OSL dosimeters including the one on the back.  We have 
transmitting SRDs on all of those locations but the head.  The head has a SRD 
in addition to OSL but cannot transmit it due to seal around divers neck.  We 
also use extremities but no transmitting SRDs on those.  Below are the 
locations we are using

Right Leg
Left Leg
Right Arm
Left Arm

Chuck Creamer
Health Physicist
Radiation Protection

Tennessee Valley Authority; Browns Ferry Nuclear Plant
P.O. Box 2000 (Mail Stop NAB-1G-BFN)
Decatur, Al. 35609-2000

256.729.2983 (w)<>
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From: Barnhart, Jarrad T []
Sent: Monday, March 05, 2018 2:38 PM
To: Stoicescu, Laura; ''
Subject: [powernet] RE: Diving dosimetry question

TVA External Message. Please use caution when opening.
Susquehanna dove in the U2 suppression pool in 2017.  Baseline WBC and 
urinalysis was performed along with post-dive WBC and urinalysis.

Dosimetry multipacks included:
Extremity dosimeters on fingers and toes (no associated EDs)

Dosimeters with EDs on:
Left/right thigh
Right/left arms

I believe all locations with EDs were transmitted to remote monitoring via 
teleview.  I would need to double check with instruments if you're interested 
in that information.  Let me know.

Assigned dose was based on highest exposed location of whole body.

Our procedure allowed the option of a back dosimeter, but it was not necessary 
based on the expected rad conditions.  One issue we ran into was a lot of 
pushback on the dosimetry requirements, particularly regarding the back 
dosimeter before the dive company understood that it was not going to be 
required for this type of dive.

Thank you,

Radiological Operations Supervisor - Programs | Susquehanna<>
Office: 570.542.6529 | NUCSB2<> | 769 Salem Blvd., Berwick, PA 

From: Stoicescu, Laura []
Sent: Monday, March 05, 2018 3:26 PM
To: ''
Subject: [powernet] Diving dosimetry question

South Texas Project would like to know what other NPP are doing for diving 
operations as far as the number of SRD and DLR and the locations used. For 
example how many DLR and SRDs are used for each diver and do they place a SRD 
on extremities i.e. wrists/ankles?

Thank you,
Laura Stoicescu, CHP
South Texas Project
Health Physics<>

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