 |
 |
 |
|
      
Buy the DOT: Download
TITLE(s): BOILING-TUB OPERATOR (chemical) alternate titles: washing-tub operator Tends tanks in which crude tetryl explosive or nitrocellulose is boiled and washed to remove acids and impurities: Admits batch of crude tetryl slurry to boiling tank. Starts tank agitators and turns valve to admit steam to tank jacket to boil slurry for specified time. Pumps off water after material has settled. Pumps fresh water through tank to wash tetryl and flush away impurities. When boiling nitrocellulose, admits acid to tub and boils contents for specified time, adds neutralizing agent, and repeats process until all nitrocellulose impurities are removed. May test acidity of solution, using hydrometer or titration test. When boiling tetryl, is designated Tetryl-Boiling-Tub Operator (chemical). GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77 ONET CROSSWALK: 92962 Separating, Filtering, Clarifying, Precipitating, and Still Machine Operators and Tenders | |||||||||||||||||||||||||||||||||||
- Dictionary of Occupational Titles (DOT) Index
- Standard Industrial Classifications (SIC) Index
- Occupational Information Network (ONET) Index
- US Census Statistical Tables
- China Statistical Tables
- World Facts
- Quick Maps (for your web site)
- Flags of All Countries (for your web site)
- Digraphs - Internet Country Codes
- Airport Codes
- Seaport Codes
- About Climate (+ Glossary)
- Immigration Superhighway
- ITA Main Page . Feedback
 
|
||
Language Translations | | Espaρol | Children | Lawyers | E-mail "Immigration Superhighway", "Immigration Central", "Immigration Assistant", "Immigration Expert", "Immigration Expert Pro" and "Immigration USA" are trademarks of Information Technology Associates.
© 1995 - 2015 Photius Coutsoukis and Information
Technology Associates (All Rights Reserved).
|
