Rank: Guest
|
Posted By Sean Fraser
Could someone enlighten me as to what TVL means on a US-based Materials Safety Data Sheet please? We think it might be the Occupational Exposure Limit (it was valued as mg/m3) but we need to be sure.
If anyone knows of an Internet resource (free to use) that can explain all of the terms used in the US that would be much appreciated.
Thank you.
|
|
|
|
Rank: Guest
|
Posted By Paul Leadbetter
Sean
I think you mean TLV - Threshold Limit Value. This is one expression for an occupational exposure limit in the US but there are others.
Look at www.acgih.org, www.cdc.gov/niosh and www.osha.gov for more information.
Paul
|
|
|
|
Rank: Guest
|
Posted By Anju Aslam
Hi
THE THRESHOLD LIMIT VALUES (TLV) IS THE CONCENTRATION OF A PARTICULAR SUBSTANCE TO WHICH AN INDIVIDUAL CAN BE EXPOSED TO OVER A REFERANCE PERIOD OF TIME.IT IS MORE OR LESS THE SAME AS THE OEL ( OCCUPATIONAL EXPOSURE LIMITS). ALSO IT IS MEASURED EITHER IN PPM OR MILLIGRAM PER CUBIC METRES.
REGARDS,
ANJU
|
|
|
|
Rank: Guest
|
Posted By Ken Taylor
We used to call them TLVs here once.
|
|
|
|
Rank: Guest
|
Posted By Jay Joshi
There is an excellent paper, "OELs and the effective control of exposure to substances hazardous to health in the UK" by Dr Mark Piney HM Principal Specialist Inspector (Occupational Hygiene)Date: October 2001; on the HSE website.
http://www.hse.gov.uk/hthdir/noframes/oel.pdf
The Abstract to this paper states:-
"Before OELs existed regulations, based on specification standards, were used
to try to control exposure to hazardous substances. OELs were first proposed by Elmhurst Duckering in the UK, as a way of limiting exposure to dust, in 1910. But, in practice, OELs were developed, applied and promulgated by industrial hygienists in the USA, the ACGIH TLVs being the most famous and influential standards. This paper covers the early control of hazardous substances, the development of TLVs and UK OELs, how reasonably practicable OELs are set and discusses a range of issues raised by the development, definitions and use of OELs. There are no conclusions or recommendations as the paper is a contribution to the current debate on the UK OEL Framework.
|
|
|
|
Rank: Guest
|
Posted By Robert K Lewis
TLVs it should be remembered are ultimately felt to be the safe levels to which a person may be exposed during their working life, ie 40 years, without recognisable or identifiable effect. Main problem is that the model basis relies on the statistical average MALE, so there were some effects found on occassions sometimes more marked in women - these led to reductions in levels.
Bob
|
|
|
|
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.