People are being warned to stay safe and take simple steps to reduce risk as Fire Brigades Union (FBU) national strikes over pension reforms are set to continue today and through the week.
Various periods of strike action are due to take place throughout July, with firefighters on strike today from 6am to 8am and 5pm to 7pm.
Crews are also set to walk out on Wednesday from 6am to 8am and 5pm to 7pm, Thursday, July 17 from 6am to 8am and 5pm to 7pm, Friday from 6am to 8am and 11pm to 1am, Saturday from 11am to 1pm and 11pm to 1am and Sunday from 5pm to 7pm.
Next week fighhters will strike on Monday (July 21) from 6am to 8am and 5pm to 7pm.
The service has a legal duty to maintain a level of service to local communities as best it can and Cornwall Fire and Rescue Service (CFRS) will continue to respond to 999 calls and will do "everything it can to keep the public safe".
A Cornwall Fire and Rescue Serice spokesman said: "This is a national dispute over firefighter pensions which we do not have the power to resolve at a local level. We have been preparing for the possibility of strike action and we have been sending out prevention messages to advise people how they can help themselves to minimise the risk of a fire.
"The most important thing to remember is that if you do have a fire, get out of the building, stay out and call 999. We will continue to respond to emergency calls and will obviously prioritise those where lives are at risk."