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27 Cards in this Set
- Front
- Back
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What is the taper on NPT? |
3/4" per foot. |
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What is the name of the thread used to overcome spiral leakage? |
Dry seal |
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T or F : many quick disconnect couplets have the NPSF thread and can be used with NPTF and NPT fittings. |
True. |
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What type of cleaning is used to remove rust and flaking inside the piping in a hydraulic or lube oil system? |
Hydroblasting |
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Why is in place around a tank in case of a rupture? |
Berms & Banks |
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How much space is required between the pipe wall and the upper spacer on double wall piping ? |
1/8" |
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What is the size of the casing elbow if you installed a 2 inch long radius elbow on the primary piping? |
3" SR |
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What type of fitting is used to maintain the integrity of a tank wall? |
Bulkhead fitting. |
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What are the weldolets on clam shells used for ? |
Either for the placements of sensors or for bypass lines |
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What is the definition of oil? |
A slippery or viscous liquid or liquefiable substance that is not readily dissolved in water. |
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What causes foaming in hydraulic fluid ? |
Compressed gases. |
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How can rust and scaling be removed in pipes that have complex shapes ? |
Pickling |
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What is the effect of differences in temperature between the process system and the secondary containment system? |
Different rates of expansion and contraction impose stress at the anchor points. |
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What is the probable cause of component malfunction, inproper valve seating, wear in components and an increase in the response time of servo valves in a hydraulic system ? |
Fluid contamination. |
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What would the symptoms of oil strength loss, rusting and other serious mechanical problems indicate in a circulating lubricating oil system? |
Excess water. |
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What condition in the hydraulic system causes the formation of sludge, gums, carbon or other deposits that clog openings and cause valves and pistons to stick or leak and give poor lubrication to moving parts ? |
Exposure to excessive heat and pressure. |
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What is the most likely cause of a cloud like film forming below the oil level on the inside of an oil reservoir sight glass ? |
Bacterial contamination. |
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What kind of pipe is used for a jacking oil system ? |
seamless pipe |
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hydroblasting is not recommended unless it is followed up by what? |
oil/gas rinse. |
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if you you have a 2" LR what is going to be used for its carrier? |
3" SR |
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if you have a 4" LR, what is going to be used for its carrier? |
6" SR |
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if you have a 8" LR, what is used for its carrier? |
12" SR |
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where would a closed containment system be used? |
it would be used where the primary pipe is carrying highly volatile fluids. |
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Long runs of pipe use changes of direction to compensate for expansion and contraction in the double lines. what can increase the distance required between expansion loops? |
centre anchoring. |
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how is bacterial contamination confirmed? |
only through laboratory analysis |
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where would an oil storage roomm be loacated? |
at a low elevation in a powerhouse |
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at what tempature should an oil sample be taken? |
5 degree celcius |
