No Regerts Flashcards
Concrete surfaces can be evaluated for hardness using a ____?
Rebound hammer
Wood is inspected using calipers, ice picks, hammers and in some cases a ____ to obtain core samples.
Incremental Borer
A major concrete defect is defined as a loss of concrete of ___ to ___%
10-15% loss
At least ____ of all measurements and observations must be rechecked by a ____ for accuracy?
10%
Second diver
If chain is bundled with the sinker, the rotten stop for the chain should be deployed ____ releasing the sinker.
Before
The positioning system must be provided by _____.
The requesting unit.
What is an example of an exceptional exposure dive?
Any dive deeper than 190’
Any in water deco with a total decompression time on air or air/O2 greater than :90
Any SURDO2 dive with a chamber O2 period greater than :120
Do educators get tagged out?
No.
The rubber sealing surface of a plug shall be ____.
un-tapered
Split key shackles shall only be used to:
connect buoy to bridle, bridle to swivel, swivel to riser, and mooring chain to sinker.
All repaired battery pocket closures shall be ____ tested before redeployment.
Air
Take caution when repositioning _____ or ____ lines to ensure they don’t snag a limpet.
Hogging line/Tending line.
What is a hollow area made by a blow or collision?
Dent
Wood Pile Defect: None
0-5%
Wood pile defect: Minor
5-15%
Wood pile defect: Moderate
15-45%
Wood pile defect: Major
45%-75%
Wood pile defect: Severe
75% or greater
Rectangular steel plates laid horizontally in rows are called what?
Strakes
What is the uppermost strake on each side referred to as?
Sheer strake
Horizontal joints?
Seam
Vertical joint?
Butt
The members along the side are referred to as?
Stinger
What chapter of the MK20 manual are you required to read prior to completing mission maintenance?
Ch.2
A _____ includes the patch and plug inspection check sheet, and patch and plug installation check sheet.
Formal Work Package
Pneumofathometer correction factors:
0-100- +1
101-200-+2
201-300-+4
301-400-+7
When does decompression stop time begin?
First stop: Arrival to left stop
Subsequent: Left stop to left stop.
Line used for circle searches should be ___ or less.
50’
Pneumocorrection factors are (corrected/unchanged) at altitude?
Unchanged
What must be applied to studs before an anode is installed?
anti-seize compound.
On STEEL surfaces, what type of lock washer is used?
Two star type.
on ALUMINUM surfaces what type of lock washer should be used?
CRES star type lock washers and CRES lock nuts
Planned exceptional exposure dive requires the approval of who?
CNO
Orifice size and air sample time for 15-35 SCFM:
.300 for :10 @9-12 psi.
What is a magnetic rebar locator also referred to as?
Cover meter or concrete pachometer.
What are 4 types of pier structures
Open
Closed
Combination
Floating
The junction of the keel and stern post is called the _____.
Forefoot
When is the mod-0 preferred to the mod-1 regulator?
Cat 3 contaminated water. 03psi positive pressure.
Two primary types of wood borers? Primary location?
Teredo (shipworms)
Limnoria (wood gribbles)
Waterline and Mudline.
If more than ___% of the exposed surface of the outer layer of an ablative anti-fouling paint system is removed, stop cleaning.
5%
How often should the tidal/splash zone be inspected?
Annually
What is the aft most section of the ship that forms the aft end of the box girder, supporting the rudder, prop, and shafting?
Stern structure.
Rubber sonar domes shall be cleaned when FR _____ or greater is observed.
FR-30
Most ships over _____ ft are longitudinally framed.
300
What is a key characteristic of longitudinal framing?
Closely spaced longitudinal frames and widely spaced deep web frames.
What is a key characteristic of TRANSVERSE framing?
Closely spaced frames extend out at a right angle from the keel.
What is under the deck with longitudinal framing? Transverse framing?
L: Deck girders
T: Deck beams
Characteristic of the stern post?
Heavy center line member
Recessed
Single screw ships
The top flange of the keel is called the _____.
Keel rider
What is the ratio of NID mixture?
1TSP to 1Gal
When is double hearing protection required?
96 decibels and above.
How often should concrete/steel be inspected?
6 years.
How often should timber be inspected?
3 years
What are the 3 most common visual signs of concrete deterioration?
Cracking
Disintegrating
Spalling
Minimum distance from Sonar activity
Hooded/Unhooded/Helmeted.
Hooded (3/16”) 600y
Unhooded: 1000y
Helmeted: 3000 yards
In Elog, what is SPPR?
Ship PMS Performance Repost
In Elog, what is FPR?
Flip Page Report
Ultrasonic Testing (UT) inspection reports should contain what 3 things?
The entire QA package.
A summary report detailing thin areas detected, location, and surrounding hull condition.
Computer generated RAW data.
