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