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2. Permit-to-work - Wikipedia

   en.wikipedia.org/wiki/Permit-to-work

   Permit-to-work adherence is essential in process safety management. Examples of high-risk jobs where a written permit-to-work procedure may need to be used include hot work (such as welding), confined space entry , cutting into pipes carrying hazardous substances (breaking containment), diving in the vicinity of intake openings, and work that ...

3. Confined space - Wikipedia

   en.wikipedia.org/wiki/Confined_space

   A confined space is a space with limited entry and egress and not suitable for human inhabitants. Alternative names for a confined space are enclosed space and dangerous space. [ 1 ] An example is the interior of a storage tank , occasionally entered by maintenance workers but not intended for human occupancy.

4. Confined space rescue - Wikipedia

   en.wikipedia.org/wiki/Confined_space_rescue

   Confined space rescue is a subset of technical rescue operations that involves the rescue and recovery of victims trapped in a confined space or in a place only accessible through confined spaces, such as underground vaults, storage silos, storage tanks, or sewers. A warning label on a storage tank, indicating that it is a confined space.

5. Sensitive compartmented information facility - Wikipedia

   en.wikipedia.org/wiki/Sensitive_compartmented...

   A sensitive compartmented information facility (SCIF / s k ɪ f /), in United States military, national security/national defense and intelligence parlance, is an enclosed area within a building that is used to process sensitive compartmented information (SCI) types of classified information.

6. Potable water diving - Wikipedia

   en.wikipedia.org/wiki/Potable_water_diving

   A hoist system is often necessary as a means for recovering an unconscious diver from the enclosed space of the tank. Simple tripod frames are commonly used to support the hoist system over the access opening. Other hoisting systems may be used, providing that they do not unduly risk contaminating the water.

7. PDF - Wikipedia

   en.wikipedia.org/wiki/PDF

   Interactive Forms is a mechanism to add forms to the PDF file format. PDF currently supports two different methods for integrating data and PDF forms. Both formats today coexist in the PDF specification: [37] [52] [53] [54] AcroForms (also known as Acrobat forms), introduced in the PDF 1.2 format specification and included in all later PDF ...

8. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

   www.aol.com/products/utilities/ad-free-mail

   SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...

9. Dust explosion - Wikipedia

   en.wikipedia.org/wiki/Dust_explosion

   Lab demonstration with burning lycopodium powder. A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location. Dust explosions can occur where any dispersed powdered combustible material is present in high-enough concentrations in the atmosphere or other oxidizing gaseous medium, such as pure oxygen.