To colour code them

To prevent putting the wrong fitting on the wrong hose

To extend the life of the fuel gas

Oxygen hoses need to hold higher pressure

After the first cut of the day

Before shutting down the equipment

After setting up the equipment

When the supervisor tells us too

Bleed the hoses

Back-off the pressure guages

Remove the cutting tip

Shut of the main gas suppy or cylinder vlave

To prevent damage the diaphram inside the guage

To prevent a loud bang when we open the cylinder

To not waste any gas

To set the pressure more easily

With a bic lighter

With another torch

With a striker

With a blow torch

Ultra Violet

Gamma Rays

Infared Rays

Visible light

When H2S gas leak has occured.

When ever CO2 is present.

When heating up sythetic materials like Teflon

When entering confined spaces.

None of the above

Do not easily oxidize

Oxidize easily

Are very reflective

Are non magnetic

It does not burn as hot as other gasses

It has a purple flame

It cannot be used to cut high carbon and alloy steels

Of the availability, performance and cost

The employee who damaged it

The employer that purchased the cylinder

The supplier of the gas

The manufacturer of the cylinder

Ignite the torch

Back off pressure guages

Open cylinder valves

Adjust guages to working pressure

Fusible plugs

Critical failure plugs

Critical point inhibitor

Thermal couplings

It looks unprofessional

Acetylene could leak out

The guages cannot be read

Acetone could be drawn into the system

Excessive Acetylene

Excessive Acetone

Excessive Oxygen

Excessive H2S