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65 Cards in this Set
- Front
- Back
Purpose of shoring |
-Placing supports against, beneath or above damaged areas -Prevents additional sagging, bulging, and/or metal fatigue -Temporary structure |
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When to shore |
-Good judgement is the best guide -Need indicated byDeep bulges in plating -Bowed frames and stanchions -Cracked seems -Panting bulkheads -When in doubt |
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Shoring type: Pressure acting parallel to axis Simplest and strongest Vertical or horizontal |
Direct compression, (I-Type) |
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Shoring type: Pressure acting perpendicularly to axis Moderate pressure |
Cross-Axial, (H-Type) |
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Shoring type: Shores under direct compressionEnds cut at 90 degree anglesInstalled at not more than a 90 degree angle |
Triangulation, (K-Type) |
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Steel shores are adjustable and... |
Telescoping |
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Model 3-5 steel shores have a maximum load of ______ pounds when closed & _____ pounds extended |
20,000 12,000 |
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Model 6-11 steel shores have a maximum load of ______ pounds when closed & _______ pounds extended |
20,000 6,000 |
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Advantages of steel shoring |
-Fireproof -Stronger than wood -Saves space & less complicated to install -Weld in place -Wedges not required -Minimum time to erecting |
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Disadvantages of steel shores |
Produces sparks Rust Maintenance required Heavier than wood shores |
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Wood shores are made of... |
Douglas fir Yellow pine Hemlock Spruce |
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Treat wood shores with |
Fire resisting chemicals |
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Wood shoring is stored in lengths of... |
16-18ft |
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Wood shoring never exceeds ____ times its minimum thickness |
30 |
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Most common wood shoring materials are... (dimensions) |
4” by 4” |
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Types of wedges |
Wood Steel |
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Wood wedges are made of... |
Douglas fir Yellow pine |
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Wedges are always used in... |
Pairs |
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Wedges are always installed rough side to... |
Rough side |
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Wedges are driven in... |
Simultaneously |
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Steel wedges are primarily used for... |
Prying |
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Steel wedges are used in conjunction with... |
Wood wedges |
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Steel wedges are______ in place |
Welded |
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A flat plate/board which is placed under the end of a shore to distribute weight/pressure |
Shole |
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2 types of sholes |
Wood Steel |
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Wood shole thickness |
At least 1" and 8-12" wide |
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-Distributes pressure -Serves as an anchor -Same material as shores |
Strongbacks |
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Easiest and Quickest Adjustable 90 degree angles on the ends Take diagonal measurements May lose accuracy |
Measuring batten |
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Carpenters square comes in ______ parts |
3 |
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Use side of carpenters square that is divided into _____ of an inch |
1/12 (1/12 of an inch equals 1 inch 1 inch equals 1 footHold tongue in left hand) |
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Indications of Flooding |
-Loss of pressure -Reduction in level of water or fuel in tanks -list of ship -Soundings -Alarm systems -Visual indications |
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Causes of flooding:Systems |
Firemain Drainage Potable water |
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Causes of flooding: Battle Damage |
Small/large holes Punctured, weakened bulkheads warped or sprung doors and hatches Ruptured or cracked pipe lines ruptured or weaken decks |
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Causes of flooding: Sea Damage |
Hurricanes Typhoons Tropic storms |
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Causes of flooding: Carelessness |
water tight integrity maintain material conditions sound tanks and voids |
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Types of flooding |
Solid Partial |
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Inward pressure on a hole submerged is _____ Pounds Per Square Inch (PSI) for every foot of depth in saltwater |
444 |
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Total output of pumping equipment must be greater than... |
flow of water into the compartment |
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The most practical goal of drainage systems is to reduce flow enough to ... |
permit effective pumping |
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Drainage System include: |
Main drainage Secondary drainage Plumbing, gravity and deck drains |
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Overboard discharge connections allow discharge of liquids through the hull of the ship and are located... |
-OnDC deck or as close to the DC deck as practicable -Port and starboard sides -Flush with outer hull surface |
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Overboard discharge connection size and type |
4" female swivel hose connection 2 1/2" fire hose connection |
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Eductors are ____-type pumps that contain no moving parts |
Jet |
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Eductors are used for pumping liquids that cannot be handled directly by... |
portable pumps |
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Eductors can handle liquids that contain fairly small particles of... |
foreign matter |
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The peri-jet eductor has ___ jets around vacuum chamber |
6 |
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The peri-jet has a straight bore of... |
2 1/2" |
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The peri-jet allows debris up to ____ inches in diameter to pass through |
2 1/2 |
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The peri-jet has no ____ valve |
Foot |
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How many PSI does a soft patch hold? |
150 psi or less |
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What are the 3 types of shoring? |
I, H, & K |
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Who's permission do you need to use an ESP to dewater a space? |
Chief Engineer's |
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What types of wood are used in shoring? |
Soft: - Douglas fir - Yellow pine - Hemlock - Spruce |
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Name the 3 types of portable eductors |
-Perijet -S-type -Inline |
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How many pounds can the 3-5 ft steel shoring hold fully collapsed? |
20,000 lbs |
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How many pounds can the 6-11 foot steel shoring hold fully extended? |
6,000 lbs |
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What does "EWARP" stand for? |
Emergency Water Activated Repair Patch |
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How much psi can EWARP withstand? |
150 psi |
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How long must you soak an EWARP for? |
20 seconds |
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Name all pipe patches |
- jubilee - soft -Ewarp |
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How many GPM can a P-100 move at optimum psi? |
100 gpm |
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What is the primary use of a p-100? |
Firefighting and limited dewatering |
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What is the discharge hose size for the S-type eductor? |
4" |
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What is the discharge size of the p-100 pump |
2 1/2" |
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How many psi does a jubilee patch hold? |
100 psi |