engineering Flashcards
(19 cards)
Explain Galvanised Corrosion
When 2 dissimilar metals are emerged in an electrolyte and connected electrically
List four factors of impingement
Pipe material
Long pipe work
badly made valves or flanges
excessive turns in pipework
list 8 specialist tools
torque wrench
chain wrench
strap wrench
helicoil set
nut splitter
easy cuts
barring over tool
swedish hole punch
bearing pullers
How do you use a torque wrench
Set wrench to specified torque (NM)
attach required socket to wrench
push wrench until it clicks
remove wrench and set to 0
Why do we use a torque wrench
to ensure accurate measurement of torque
list 5 different valves
butterfly valve
ball valve
non return valve
walton valve
globe valve
list 4 leak detection methods
infrared leak detection
fibre optic leak detection
acoustic emission detection
pressure/flow monitor
6 of the 22 principles
read JIC
obtain relevant permission for job
use safe systems of work like LOTO
carry out risk assessment or COSHH assessment if required
wear the correct PPE for job
obtain the correct tools for the job
4 points of bearing hygiene
clean bearing house before fitting
use correct lubrication method
cleaning the bearing
bearing should be inspected upon completion
what accelerates chemical corrosion
atmosphere
moisture
heat
pollution
List 4 measuring equipment for bearing wear
Plastigauge
bridge gauge
poker gauge
bearing wear micrometer
micrometer
what is impingement
impingement is caused when a turbulent water flow travels upstream in pipework creating pitting in a horseshoe shape
what is gland packing and list the factors
it’s a seal used on the shaft line to prevent leaks, pressure temp and shaft speed have to be factored in
22 map post job
inform relevant authority
clean workspace
record on UMMS
monitor equipment regularly
conduct diagnostics and fault finding
critical or non critical
what is galvanic corrosion
two dissimilar metals in contract submerged in a electrolyte
list 4 factors that can cause impingement
badly made valves
badly made flanges
excessively long pipework
pipe diameter
excessive bends in pipework
list 8 specialist tools
torque wrench
dial test indicator
measuring equipment
helicoil
bearing extractors
go no go gauge
list 5 types of valves
ball
globe
butterfly
non return
hp air valve
walton 3 way
4 leak detection methods
infrared leak detection
acoustic emission
fibre optic
flow monitoring
