Common Used Acronyms

[Marlin]

Phone call to Ludlum HQ in USA and asked them.  Their HP tech rep said the R stood for Roentgen.  Case closed.

Dang this could have gone on for a lot longer. Who was that tech rep a salesman? Maybe he has a bias for historical nomenclature. I want a recount there may have been a hanging chad.

[Marlin]

Phone call to Ludlum HQ in USA and asked them.  Their HP tech rep said the R stood for Roentgen.  Case closed.

Silly question, if it is Roentgen why don't you have to convert to Rad or REM? The difference is small but still there.

[Marlin]

Silly question, if it is Roentgen why don't you have to convert to Rad or REM? The difference is small but still there.

another silly question if the meter face for R/hr and Sv/Hr match up how is roentgen at .877 match up with the Sv/hr meter face? Just sayin'

My    who am I to question the tech rep.    I could be wrong but at least this thread is still alive.

[SloGlo]

another silly question if the meter face for R/hr and Sv/Hr match up how is roentgen at .877 match up with the Sv/hr meter face? Just sayin'

My    who am I to question the tech rep.    I could be wrong but at least this thread is still alive.

knot scene sv/hr hear.
https://ludlums.com/products/all-products/product/model-19

[SloGlo]

another silly question if the meter face for R/hr and Sv/Hr match up how is roentgen at .877 match up with the Sv/hr meter face? Just sayin'

My    who am I to question the tech rep.    I could be wrong but at least this thread is still alive.

separate meter faces four different measurements.


Meter Face   Image   Description
202-1034   202 1034   0 - 500 µR/hr

202-1040   202 1040   0 - 50 µSv/h

https://ludlums.com/products/all-products/product/model-19a

[SloGlo]

Silly question, if it is Roentgen why don't you have to convert to Rad or REM? The difference is small but still there.

Quote from: Marlin on Today at 10:28:16

....that factor is one for gamma, well .93 for roentgen but radcon math applies.

[SloGlo]

Silly question, if it is Roentgen why don't you have to convert to Rad or REM? The difference is small but still there.

may bb caws if yins go full scale wit this meter, yore @ 5mr/he and knot inn danger of an over exposure.

[Marlin]

separate meter faces four different measurements.


Meter Face   Image   Description
202-1034   202 1034   0 - 500 µR/hr

202-1040   202 1040   0 - 50 µSv/h

https://ludlums.com/products/all-products/product/model-19a

Equivalent scales all you do is change the meter face. 

[johnnieslingshot]

So, does this mean that MOST of us meter swingers have been reporting our results wrongly?  The last site I worked at only had uRem/hr as a choice on the drop-down menu on VSDS.

[SloGlo]

Equivalent scales all you do is change the meter face. 

quick look at faces show a scale difference witch will work with the math difference.

[SloGlo]

So, does this mean that MOST of us meter swingers have been reporting our results wrongly?  The last site I worked at only had uRem/hr as a choice on the drop-down menu on VSDS.

depends awn supervisory/administration direction n aporoval.

[Bonds 25]

MicroR (Model 19)  are used for finding radioactive material (Roentgen), usually outside RCA's (very sensitive, over response)

MicroREM (Bicron) are used for setting dose rates (Roentgen Equivalent Man)

Believe me, from experience, when they NRC sees that you have been using a MicroR for ISFSI and Protected Area boundary dose rates.....for many years, they will not be happy.

[Bonds 25]

RHR - Residual Heat Removal
RCIC - Reactor Core Isolation Cooling
RCC - Reactor Closed Cooling
RWCU - Reactor Water Clean Up
RRC - Reactor Recirculation
RFW - Reactor Feedwater
COND - Condensate
RPS - Reactor Protection System
SW - Service Water (Ultimate Heat Sink)
SRM - Source Range Monitor
LPRM - Local Power Range Monitoring
IRM - Intermediate Range Monitor
FPC - Fuel Pool Cooling
SRV - Safety Relief Valve
DAW - Dry Active Waste
CFD - Condensate Filter Demineralizer
EDR - Equipment Drain Radioactive
FDR - Floor Drain Radioactive
DAC - Derived Air Concentration
DW - Drywell

[GLW]

both meters (bicron and ludlum) use NaI (I recall once upon a time Bicron [not thermo fisher] advertised the detectors as organic),....


bicrons can be "doped" for low energy sensitivity or "undoped" for standard sensitivity,...


either instrument when "normalized" to a Cs-137 field will improperly respond in oh, I don't know, something like an Am-241 field (actually I do know),...


so, sieverts and rem are the same result on different scales, energy deposited, damage done, soft tissue,...


roentgens are not the same, roentgens are energy deposited into thin air, air don't get hurt, air don't get sick, air don't die,...


the detectors inside the little black or tan box and the electronics inside the little black or tan box don't care what symbols are painted or printed on the meter face,...


it's how you set your meters up,...


"R" is just an "R",....


it's just a symbol on a meter face, etc.,...


it can mean just about anything you want it to, IF you know what you want it to mean, and you know how to set it up to mean that,....


if all of the above leaves you in that "the world is flat and a rock is a rock" place,...


well then, you're not qualified to know what you don't know,...


BUT, you do know how to observe a needle on a meter face or note a digital figure on a display screen,....


and write down a number on a piece of paper or type an entry onto a computer screen,...


and that obviously has some value, since you're all getting paychecks to do just that,...


now,.....


case closed,.....


I'm bored,...




edit:




OMG!!! once again I forgot to accommodate the SCWE sensitive snowflakes with the  emoticon translator devices,....

[Marlin]

So, does this mean that MOST of us meter swingers have been reporting our results wrongly?  The last site I worked at only had uRem/hr as a choice on the drop-down menu on VSDS.

Cold case file reopened 

I doubt it Roentgen is a historical term as well as a more precise term for calibration. NIST does not want any association of Roentgen with Sieverts. Historical terms in RadCon are not that unusual, Thoron and Radon are a good example both are radon but the top of the decay chain, are uranium and thorium but Thoron to describe the gas at the end of the decay chain is not used that much any more.




I have to admit to trolling a bit but it sure helped kept this thread alive for a bit.     

[GLW]

.... NIST does not want any association of Roentgen with Sieverts.......

pert much,...


REMs and Sieverts are just fine together,...


albeit REM is fast approaching fossil status,....

[SloGlo]

albeit REM is fast approaching fossil status,....

butt, a sievert is a sievert is a sievert, just dew knot have the same cadence... 😉

[GLW]

butt, a sievert is a sievert is a sievert, just dew knot have the same cadence... 😉

true that,...