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21 Cards in this Set
- Front
- Back
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State why nitrogen utility drops are clearly labeled and a check valve is permanently installed. |
Nitrogen is an asphyxiate. Check valves prevent contamination of nitrogen system which would go out to other parts of the plant. |
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State the hazard of nitrogen while working in an enclosed area. |
Asphyxiation. |
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State the reasons for double block valves on nitrogen lines on the regeneration system on sieve beds, and on solvent filters. |
To prevent the contamination of the nitrogen system. Sieve beds and solvent filters contain hydrocarbons which are flammable. Cross contamination could lead to an explosion or fire elsewhere. |
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State the hazards of methane gas. |
Extremely flammable, asphyxiate, can cause frostbite and dizziness/drowsiness. |
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What are the physical properties of methane gas? |
Colorless & odorless vapor. |
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State the area(s) where methane gas is used. |
All four furnaces and the flare. |
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State the policy referring to who may operate 440 or 2300 volt switchgear. |
Must have two Poly 3 personnel to verify correct operation and one acts as a spotter. Must wear proper PPE. |
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State the hazards of using plant air for breathing purposes. |
Plant air comes in at a pressure of 70+ PSIG. Could blow out your lungs at that pressure. |
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State the minimum distance a JLG can be operated near 2300 volt lines. |
20 feet. |
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Describe the hose fittings for the following: 1. Plant Air 2. Nitrogen 3. Water |
1. National Series B, Dixon Dix-Lock 2. National Series A, Dixon Dual Lock 3. National Series B, Dixon Dix-Lock |
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State the source of plant air. |
Site utilities. |
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State the purpose of E-601 and E-611. |
Heat exchangers. They condense solvent that is used for the wax coalescor produce 30# steam for the ARUs. |
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State where these utilities come from and at what pressure. 1. Plant air 2. Nitrogen 3. 30# Steam |
1. Plant air comes from site utilities at 70 PSIG 2. Nitrogen comes into the plant in two locations from site utilities at 70 PSIG. 3. Two red knockdown valves reduce 235# to 30# steam. |
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State how nitrogen purge is regulated to the flare line system. |
Rotometers adjust the flow to the flare line system. |
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How is conductivity monitored in Poly 3's condensate system and what effect does it have on the condensate system? |
Conductivity probes in the condensate lines control blowdown to adjust the conductivity of condensate. |
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What do you do if there's dirty water in the eyewash/safety shower? |
Open shower valve and allow to flush until clear water can be seen. |
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What do you do if there's no flow or low flow of nitrogen to flare system at a given purge point? |
Adjust the flow using the rotometer. |
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What do you do if there's water in the air system? |
Open the petcock valve at the bottom of the air filter and drain off the contents. If excessive moisture is in the system then allow the system to drip. |
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What do you do if condensate pH is out of spec? |
Need to blowdown more condensate and replenish with condensate from condensate buy/sell line. |
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What do you do if 30# steam system over pressurized? |
Big Bertha (the PSV) will be lifted if it reaches 50#. |
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What do you do if there's a broken or damaged safety shower head, tail hose, or eye wash? |
Print out the procedure, remove and replace the desired part. |
