Bucket Bag (10/16/18) BH Flashcards
Similar to frostbite, due to prolonged exposure to water and cold on the skin with a lack of blood flow due to the cold
Trench Foot
APR
air purifying respirator
Life threatening condition that results in the failure of the bodys internal warming system
Hypothermia
LEL
lower explosive limit
LFL
lower flammable limit
Hazardous atmospheric conditions
- flammable
- toxic
- irritant/corrosive
- asphyxiating
bodys temperature control system produces sweat to cool the body, stops working, body temp rises, may cause brain damage or death
Heat stroke
Blood blow to the skin increases, causing flow to decrease to vital organs. Results in mild shock and can cause heat stroke if not treated
Heat exhaustion
an unplanned event that has the potential to produce injury and/or property damage
incident
IDLH
immediately dangerous to life and health
CSP
certified safety professional
carbon dioxide
helium
argon
nitrogen
air displacement gasses
normal atmosphere consists of
20.9% oxygen
78.1 % nitrogen
1% argon
300v or less
Avoid contact
establishes minimum clearances from power
ANSI A92.2
over 300v not over 750v
12 inches
751v not over 2kv
18 inches
2kv to 15kv
24 inches
15kv- 37kv
36 inches
37kv-87.5kv
42 inches
3 common causes of aerial lift accidents
stability problems
operator error
violating OSHA regulations
4 types of decals
warning
danger
caution
operating instructions
caused by impedance mismatch between two points on the network
Micro-reflections
dependant on the attenuations on different frequencies as signal travels through the HFC plant
Amplitude Tilt
a continuous wave frequency onto which information is modulated for transport
Carrier Frequency
a unit consisting of various hardware and software entities that acts as a handoff point between the RF based HFC network and other networks such as the internet and the PSTN
CMTS (cable modem termination system)
constrained to have two states on and off
Binary Format
smallest unit of digitized data
BIT (binary digit)
number of changed states that can occur per second
BAUD
a set of bits that represent a single character
Byte
a clustering of beats 1.25 Mhz above the visual carriers
CSO (composite second order)
sum of all the losses associated with a fiber link between the transmitter and the receiver
Loss Budget
in order to obtain an accurate recreation of a signal it must be sampled at a rate of at least twice the highest frequency
Nyquist Rule
the highest power level reached by a carrier
Peak
a switch or collection of switches connecting multiple networks
Point of Presence (POP)
the process of setting up the connection between the CMTS and the cable modem where TX level and frequency are determined
Ranged
tests for discontinuities on coaxial cable
TDR
caused by inherent instabilities within a laser
RIN Relative intensity noise
cable loss + passive loss
total loss
starting level - total loss
expected level
390nM - 780nM
visible red light
Errored bits vs. total bits per second
BER
1271nM-1611nM
CWDM
H2S
Hydrogen Sulfide
LLC
logical link control
MACD
move add change delete
PNAC
port based network access control
PID
packet identifier
RPD
return path demodulator
SAM
saturable absorber mirror
TFTP
trivial file transport protocol
VLSM
variable length subnet masking
y/c
luminance chrominance (s video signal)
YAG
yttrium aluminum garnett
1- 1 1/2 blocks in city driving
approx. 1/4 to 1/2 mile on highway
12-15 second lead time
scanning the area in front of your vehicle from sidewalk to sidewalk
45 degree eye scan
ensures you view your total driving environment while moving
front/rear/front/side eye scan
1926.453
extendable boom platforms
aerial ladders
articulating boom platforms
vertical towers
1910.67
vehicle mounted elevating and rotating work platforms
appropriate clearances while operating aerial lift around power lines depending on voltages
1926(m)
self rescue from aerial lift
