CITY & GUILDS 6090-500 – EPA KNOWLEDGE TEST (MOCK EXAM)

You attend a site where R410A has been leaking from a cracked service valve. What is your legal responsibility?

• Vent and recharge

• Record leak and arrange recovery

• Top up refrigerant

• Leave site

A pressure relief valve has been blanked off on a receiver. What should you do?

• Continue work

• Report immediately

• Replace TXV

• Increase airflow

You are asked to work live in a 415V panel. Which regulation protects your right to refuse?

• COSHH

• PUWER

• F-Gas

• Electricity at Work

A flammable refrigerant cylinder is dropped. Which regulation applies?

• HASAWA

• RIDDOR

• DSEAR

• F-Gas

A non-fatal electric shock occurs on site. What must be used to report it?

• COSHH

• RIDDOR

• PUWER

• LOLER

Which document covers refrigeration safety design?

• BS 7671

• BS EN 378

• CIBSE Guide B

• PAS 2060

Who enforces pressure system safety?

• Ofgem

• CIBSE

• HSE

• BSI

Which controls refrigerant storage?

• COSHH

• F-Gas

• Electricity at Work

• LOLER

High pressure trips on hot days are explained by:

• Boyle's Law

• First Law

• Pressure-temperature relationship

• Dalton’s Law

High superheat with low suction indicates:

• Overcharge

• Liquid line restriction

• Flooded evaporator

• Faulty compressor