PTW, Sanction to Test & Minor Works

Question 1

PTW

Answer 1

Safe system of work
Highlights all hazards and all precautions that will be used to reduce the risk of danger (control measures)
Must be made by an authorised person who has sufficient knowledge and experience of the installation

Question 2

Sanction for Test

Answer 2

Used in high voltage systems
Permit usually used to control the use of electrical testing of high voltage equipment
Due to the dangers of high voltage additional precautions have to be taken as the testing may involve the removal of the circuit main earths applied to all high votlage equipment prior to work is allowed to start.
Only authorised or senior authorsed people are allowed to accept a sanction for test permit as they have the required exeperience

Question 3

Minor Works Cert

Answer 3

If an existing circuit is changed or extended then this certification can be used. The circuit must be tested before work begins on it as if there is a fault work should not be carried out.

Question 4

Intrinsically Safe Testers

Answer 4

Designed to produce no sparks or not enough energy to cause an explosion