THRESHOLD LIMIT VALUE

 THRESHOLD LIMIT VALUE :

The threshold limit value (TLV) of a chemical substance is believed to be a level to which a worker can be exposed day after day for a working lifetime without adverse effects. Strictly speaking, TLV is a reserved term of the American Conference of Governmental Industrial Hygienists (ACGIH). TLVs issued by the ACGIH are the most widely accepted occupational exposure limits both in the United States and most other countries.[1

Comments

Post a Comment

Popular posts from this blog

THEORITICAL YIELD VS ACTUAL YIELD

Image
THEORITICAL YIELD VS ACTUAL YIELD : Amounts of products calculated from the complete reaction of the limiting reagent are called  theoretical yields , whereas the amount actually produced of a product is the  actual yield . The ratio of  actual yield  to  theoretical yield  expressed in percentage is called the percentage  yield
Read more

REACTOR OPERATION

Image
1. REACTOR Types of reactor :ssr,glr,hastolly reactor Types of condensers :sheel and tube Types of jackets: shell and limpet type Moc: ss316,ss316 contains 16-18%chromium and 11-14% nickel and remaining iron. ss reactor suitable for pH 7.0 to 14 and glr suitable for pH 1.0 to 7.0 Types of agitator s:anchor,propeller,turbine Baffles: paddle type baffles,using onside and two opposite sides in reactor Reactor capacity and part : as per batch size and urs   1.motor 2.gear box 3.agitator 4.bottom value 5.jacket 6.temperature sensor 7.safety value 8.nitrogen line 9.manhole or hand hole 10.flame arrester 11. reflux line Guages: 1.pressure guage: Measured the unit of forcesurface area.pressure is measured in kg/cm2 or lb/cm2 2.vacuum guage :A vacuum is a space in which the pressure of a gas is low compared to the atmospheric pressure. The measure of vacuum is associated with pressure. Vacuum gauges and instruments are used in conjunction with vacuum senso...
Read more

pharmaceutical warehouse process

1.   What is the role of Warehouse in Pharmaceuticals : Warehouse in pharmaceutical plays an important role which includes Receiving of Raw material, Packing material, Finished products, Storage of materials in required storage condition (Temperature and RH), Dispensing of Raw and Packing materials which are required for manufacturing of the batches , Dispatch of Finished (the products which completed all stages i.e. manufacturing and Final packing) products. 2.   What is Good Warehouse Practices (GWP): Good Warehouse Practices (GWP) includes Entry and Exit to warehouse with proper gowning, Receiving and storage of materials in required storage condition, Proper Labeling of Raw and packing materials, Systematic arrangement of materials in warehouse, Use of required personnel protective equipment during dispensing of materials, Storage of controlled drug substances, Training of persons working in warehouse, Verification of Incoming materials with respect to Quantity and...
Read more