DC system
What is the voltage in the 3rd rail system?
750DC
What is LOPI
Low Oil Pressure Indication
Who should take responsibility for Safety Critical Communications?
As professionals, we must all take responsibility for Safety Critical Communications
What is Network Rail's safety vision?
Everyone Home Safe Every Day
What is the Unit of Resistance in an electrical circuit?
OHMS
What is a rectifier?
it converts AC to DC
What is the voltage in the HV network
33KV
ABC-P
Accurate, Brief, Clear, Professional
Which Law and legislation sets out the general duties employers have towards employees and members of the public and the general duties employees have towards themselves?
Health and safety at work act 1974
Resistance to current flow in an AC circuit is referred to as:
Impedance
What piece of equipment is used to section the the conductor rail
Hook switch, TIS
what are the 2 types of feeding arrangements?
Ring & Radial
What four sections should a Safety Critical message have?
Opening; Information; Actions; Confirmation
Which Law and legislation sets out the need for employers to complete risk assessments?
Management of health and safety at work regulations 1999
How many levels of protection are there?
3
What is the return system on the DC network?
Negative return
What type of transformer is used at grid site?
Step Down
What type of communication is Safety Critical Communication?
Formal
Which Regulation is directly applicable to work on all electrical systems and voltages?
Electricity at Work Regulations (1989)
how is the ECO attention drawn to any Issues on the electrified network.
Audio/Visual alarm
What piece equipment is used to collect the current on a train?
Collector Shoe gear
What documents are used for a HV Isolation?
CSC circuit state
PTW permit to work
SFT sanction for test
During Safety Critical Communications we should display what type of behaviour?
Be assertive, not passive or aggressive
what relevant regulations covered by the Health And Safety At Work Act (5 Answers):
PPE (1992)
WTR (1998)
DSE (1992)
RIDDOR (2013)
COSHH (2002)
What is the process where the DNO circuit breaker has tripped due to overload or undetected fault on the NR system
Progressive recharge