Bung Ricky dan Mas Kokok, Nah knowledge sharing (KS) seperti ini yang kita inginkan. Saya yakin rekan rekan milis menginkan ini. Saya pernah dengar/dpt laporan ada C/M yang nggak bisa kalibrasi Gas Detector. Hal seperti amat sangat disayangkan. Kemudian cara penggunaan Gas Detektor yg benar juga saya rasa perlu disosialisasikan.
Kami tunggu posting KS selanjutnya. Salam Budiman --- In [email protected], "Ricky, Iswanto" <[EMAIL PROTECTED]> wrote: > > Dear Capt, > LEL 35% dan jika kadar O2 diatas 11% artinya keadaan ini kalau tidak > salah telah memasuki daerah flammable area yang mana diatas dari daerah > Too lean ( miskin akan hydrocarbon - mungkin kita bisa kembali melihat > Diagram Flammable yang mana kalau tidak salah tergambar 3 area yaitu 1. > area too lean, 2 .flammable area dan yang ke 3 daerah Too rich. > > Kindly see http://www.ilpi.com/msds/ref/stel.html for your referenced. > > STEL = Short Term Exposure Limit (STEL) is defined by ACGIH > <http://www.ilpi.com/msds/ref/acgih.html> as the concentration > <http://www.ilpi.com/msds/ref/concentration.html> to which workers can > be exposed continuously for a short period of time without suffering > from > > 1. irritation <http://www.ilpi.com/msds/ref/irritant.html> > 2. chronic <http://www.ilpi.com/msds/ref/chroniceffect.html> or > irreversible tissue damage > 3. narcosis <http://www.ilpi.com/msds/ref/narcosis.html> of > sufficient degree to increase the likelihood of accidental injury, > impair self-rescue or materially reduce work efficiency > > STEL's are generally used only when toxic > <http://www.ilpi.com/msds/ref/toxic.html> effects have been reported > from high acute <http://www.ilpi.com/msds/ref/acutetoxicity.html> > (short-term) exposures in either humans or animals. An STEL is not a > separate independent exposure limit, but supplements (TWA) time- weighted > average limits <http://www.ilpi.com/msds/ref/pel.html> where there are > recognized acute effects from a substance whose toxic effects generally > chronic <http://www.ilpi.com/msds/ref/chroniceffect.html> (long- term) > in nature. > For example, one can not be exposed to an STEL concentration > <http://www.ilpi.com/msds/ref/concentration.html> if the TLV-TWA (time > weighted average for an 8 hour shift; see Permissible Exposure Limit > (PEL) <http://www.ilpi.com/msds/ref/pel.html> ) would be exceeded. > Workers can be exposed to a maximum of four STEL periods per 8 hour > shift, with at least 60 minutes between exposure periods. > > Regards, > RI > > > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf > Of kokok purwoko > Sent: Friday, January 25, 2008 9:30 PM > To: pelaut > Subject: [pelaut] sharing LEL > > > > Sekedar iseng2 dan sharing informasi untuk rekan2, bukan bermaksud > menggurui lho. > > Case : Suatu saat sebelum masuk ruangan tertutup ( confined space ) kita > melakukan pengukuran kadar Lower Explosive Limit ruangan tsb dengan > portable gas detektor dan saat itu LEL-nya terbaca 35%. > > Problem : > 1. Apakah ruangan tsb secara teknis / matematis dapat terbakar atau > dengan kata lain kondisi ruangan tsb sudah mencapai titik terendah yang > dapat terbakar (meledak) ? > 2. Ada yang mau bantu untuk menjabarkan istilah2 STEL, TWA, ceiling > limit yang ada di gas detector? > > Note: kalau ada kalimat yg salah / tidak tepat mohon dimaafkan yaa. > > Ditunggu komen dari rekan2 > > Have a nice day. > > wassalam > kkk > > Send instant messages to your online friends > http://uk.messenger.yahoo.com > JALESVEVA YAYAMAHE Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/pelaut/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/pelaut/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
