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Evaluating sustained load case in FIRE Condition
- Thread starter Qaci
- Start date
goutam_freelance
Mechanical
The fire protection system is typically designed for the protection of occupants and buildings. Also, the equipment can be protected up to a certain extent.
Referring to ISO 834 fire temperature curve, the temperature can reach about 1000 deg C after 1 hour. It may be futile to try a long-duration protection of pipes after such a fire. To cover the expenses against such an incident, we have fire insurance.
However, to a limited extent, the piping can be protected. B31.1 allows a factor of 3 for allowable stress range S_A, refer to 102.3.2 (b) (2) for non-cyclic thermal displacement.
Again, the degree of protection required will be determined by AHJ as per NFPA.
Referring to ISO 834 fire temperature curve, the temperature can reach about 1000 deg C after 1 hour. It may be futile to try a long-duration protection of pipes after such a fire. To cover the expenses against such an incident, we have fire insurance.
However, to a limited extent, the piping can be protected. B31.1 allows a factor of 3 for allowable stress range S_A, refer to 102.3.2 (b) (2) for non-cyclic thermal displacement.
Again, the degree of protection required will be determined by AHJ as per NFPA.
There is no Fire Load Case given in ASME BPVC Code. Usually, after a fire event, you/your company has to initiate a FFS. Essentially, it will be assessment of mechanical properties of components subject to heat exposure and re-rating/replacement if required.
You need to call an expert third party who does FFS.
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