Rehacayli
Mechanical
- Aug 1, 2013
- 14
Hello,
I've got a specific question and looking for a possible confirmation from NFPA. I have a design concept in hand;
- we have a lot of generators in the project. to reduce them we have come up with an idea to use the generators for business continuity and in case of fire these generators would switch to be used in life safety in need. It means if I have 3 generators for business continuity and 2 generators for life safety need, instead of having 5 generators, I'd like to use 3 generators and if a fire signal or a evacuation scenario is activated those three would serve life and safety instead of business continuity as all the building would be evacuated anyways. Is this permitted according to NFPA or do I require a separate generator set for the life and safety?
- another question is, I have a disagreement with our designer. he claims that we need to have a pump set feeded from mains and a pump set feeded from generator back-up. I claim that if we have a electrical pump feeded from mains and a diesel engine pump, it is enough. in case of electrical cut, the diesel engine pump will be online. He says that this is not permitted in NFPA as there can be a time that diesel engine is under maintenance and generator can't back up the fire system. I think that this is over safety and I don't think NFPA says something like that.
Can I have some ideas or confirmation for these? thanks in advance.
I've got a specific question and looking for a possible confirmation from NFPA. I have a design concept in hand;
- we have a lot of generators in the project. to reduce them we have come up with an idea to use the generators for business continuity and in case of fire these generators would switch to be used in life safety in need. It means if I have 3 generators for business continuity and 2 generators for life safety need, instead of having 5 generators, I'd like to use 3 generators and if a fire signal or a evacuation scenario is activated those three would serve life and safety instead of business continuity as all the building would be evacuated anyways. Is this permitted according to NFPA or do I require a separate generator set for the life and safety?
- another question is, I have a disagreement with our designer. he claims that we need to have a pump set feeded from mains and a pump set feeded from generator back-up. I claim that if we have a electrical pump feeded from mains and a diesel engine pump, it is enough. in case of electrical cut, the diesel engine pump will be online. He says that this is not permitted in NFPA as there can be a time that diesel engine is under maintenance and generator can't back up the fire system. I think that this is over safety and I don't think NFPA says something like that.
Can I have some ideas or confirmation for these? thanks in advance.