When exposed to the atmosphere, fluorocarbonvapors will accumulate in low spaces unless localventilation is provided. Since these vapors are heavierthan air, they can displace oxygen. Inhaling vapors athigh concentrations (4,500 ppm or greater) will causedizziness or narcosis. If fluorocarbon vapors displaceoxygen, suffocation occurs.When handling fluorocarbon refrigerants andsolvents, wear the following PPE:Rubber glovesSafety splash gogglesProtective clothingIn addition, if vapors accumulate over 1,000 ppm, wearan OBA or air-line respirator; and notify the gas freeengineer.REVIEW 2 QUESTIONSQ1. When you are working with solvents, what doesthe term ventilation mean?Q2. List the protective equipment you should wearwhen handling acid or caustic cleaners.a.b.c.d.Q3. How must the material and rags used to clean upa solvent spill be treated?Q4. List two types of respirators used by Sailorswhen handling solvents.a.b.Q5. What causes most fires in paint and solventstorage areas?Q6. List the symptoms personnel might have whenworking in a compartment having bad air?a.b.c.d.PAINTING AND PRESERVATIONLearning Objectives: When you finish this chapter,you will be able to—Identify the equipment and procedures used forsurface preparation.Identify types of paint and recognize their use.Recall fixtures, devices, and surfaces that shouldnot be painted.Recall painting safety precautions.Recall methods used when painting to includecare of brushes and rollers.The Navy uses from 25 to 30 million gallons of alltypes of paint a year. Roughly 20 million gallons areused for preservation, some of which you will apply.Paintbrush purchases also run into millions of dollars. Itis no exaggeration to state that millions of man-hours ayear are expended in cleaning, chipping, and painting.To paint a ship’s exterior with one coat takes 20gallons on a tugboat, 50 gallons on a submarine, and asmuch as 950 gallons on a carrier. The average basic18-10Student Notes:
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