2021 Bibs Flashcards
TRCS EPS
1- rapid loss 2- increase 3- contamination 4- fire 5- loss of o2 6- loss of trc primary air 7- loss of tl primary air
How to switch to secondary on the TL?
Load ahp-r-4 (sec) to 200 psig
Back off ahp-r-3 (pri)
Polarity for o2-arc cutting?
Straight polarity (electrode negative)
Steel tubular electrodes cut up to what metal thickness?
2”
Burn time of steel tubular?
Aprox. 1 min
How many amps does steel tubular require at depth?
300-400 amps
O2 for cutting should be set at ____
90 psi
70 cfm
How many small rods are in a BROCO ultra thermos electrode?
7
What sizes of Kerie cable?
6mm
9mm
12mm
What valve controls o2 valve on kerie cable?
Hoke valve
Kerie cable burns how fast?
2 fpm
Wet welding uses what polarity?
Straight polarity or dc electrode negative
What is required blade pitch for cpp blade removal?
Zero pitch position
What is bsrb?
Blade seal base ring
Dowel pins cannot stick out no more than how many inches on cpp blades?
3-3/8 inches
Torque all cap screws on cpp blades to?
75 ft lbs
What nstm provides general info for cpp?
245
A successful propeller change requires what amount of time?
2-3 weeks
Ship should have a min water depth of what at the stern for a propeller change?
10ft greater than ships draft
What nstm covers underwater inspection of sea chest protection sleeves?
505
Sea chests that are serviceable by divers normal range between?
28-46 inches
What are 3 different types of stern tube seals?
Box patch
Mechanical shaft seal
Wrapping
Wrapping type seals must provide an acceptable leak rate of how many min?
30
What fairing compound must be measured, mixed, and applied manually?
Hycote 461
How much weaker is the breaking strength of wet nylon vs dry?
15%
What bc is used with mk16?
Mk11
How long is a mk16 good for after initial setup checklist is completed and placed in stand by condition?
2 weeks
High pressure indicators need to be within what percentage of gauged bottles?
10%
Normal limits for mk16?
N2o2: 150
Heo2: 300
Days Co2 absorbent canisters for mk16 can be stowed prior to diving?
14 days
How many min of o2 flow over mk16 sensors before steady green?
4 min minimum
How many bendix connections are checked on the mk16?
8
Initials on mk16s are good for how long in stand by conditions?
6 months
A compressor log must include what information
Date Start/stop hour meter readings Corrective /preventative maintenance Component being charged Pressures not within parameters
NAVSEA 00C2
Salvage
NAVSEA 00C25
Environmental
NAVSEA 00C3
Diving
NAVSEA 00C4
Certification
NAVSEA 00C5
UWSH
How do you determine what gauge to use?
130-160% of max operating pressure of the system
OPNAVINST 5102.1
WESS reporting
Saturation diving is capable to go to
1000 fsw
DP vessels we can use
IMO Class 2 or 3 only
SCUBA cold water diving?
37 and below
Scuba maximum current
1 knot
How often do you signal a diver on scuba?
2-3 min
Bailout bottle size
19-50 scf
