Treatment plant and method for designing treatment plant
Provided is a technology of preventing an increase in size of a treatment plant, which may be caused when a safety clearance for the prevention of spread of a fire is set, and restraining an increase in designed fire-extinguishing water usage. A treatment plant for handling a flammable liquid includes: an equipment placement region in which a plurality of equipments configured to handle the flammable fluid are placed, the equipment placement region being divided into four or more firewater supply sections. A plurality of fire-extinguishing water supply facilities are provided to the firewater supply sections, respectively, the fire-extinguishing water supply facilities each being capable of, when a fire occurs in the firewater supply sections, simultaneously supplying fire-extinguishing water to a fire-occurrence section and an adjacent section.
1. A treatment plant for handling a flammable fluid, the treatment plant comprising:
an equipment placement region in which a plurality of equipments configured to handle the flammable fluid are placed, the equipment placement region being divided into four or more firewater supply sections so that the four or more firewater supply sections include the equipments, respectively; and
a plurality of fire-extinguishing water supply facilities provided to the four or more firewater supply sections, respectively, the fire-extinguishing water supply facilities each being capable of, when a fire occurs in one of the equipments placed in the four or more firewater supply sections, simultaneously supplying fire-extinguishing water to a fire-occurrence section corresponding to a firewater supply section among the four or more firewater supply sections in which the fire has occurred and an adjacent section being a firewater supply section among the four or more firewater supply sections that is less than a preset safety clearance distance away from the fire-occurrence section,
wherein the preset safety clearance distance prevents the spread of fire across the preset safety clearance distance,
wherein, the four or more firewater supply sections are defined so that a distance from the fire-occurrence section to a second firewater supply section next to the adjacent section always becomes equal to or larger than the preset safety clearance distance when any of the four or more firewater supply sections becomes the fire-occurrence section,
wherein the treatment plant is a plant, that handles the flammable fluid or performs a treatment using the flammable fluid.
2. The treatment plant according to claim 1 , wherein the safety clearance distance is set to fall within a range of from 3 meters to 50 meters.
3. The treatment plant according to claim 1 , wherein, when a pipe rack being a frame configured to hold a plurality of pipes through which a fluid to be sent and received between the plurality of equipments is placed in the equipment placement region, the safety clearance distance is regarded as being ensured between two firewater supply sections among the four or more firewater supply sections that are located facing each other across the pipe rack.
4. The treatment plant according to claim 1 , wherein a capacity to supply fire-extinguishing water to the plurality of fire-extinguishing water supply facilities is determined based on a maximum value of a result of calculation of a firewater supply amount supplied to the fire-occurrence section and the adjacent section, which is obtained for each of the firewater supply sections.
5. The treatment plant according to claim 4 , wherein a water drainage capacity of the treatment plant is determined based on the maximum value of the firewater supply amount.
6. The treatment plant according to claim 5 , wherein, when an estimated water drainage amount in view of precipitation on a site of the treatment plant is larger than the maximum value of the firewater supply amount, the water drainage capacity of the treatment plant is determined based on the estimated water drainage amount.
7. The treatment plant according to claim 1 , wherein the fire-extinguishing water supply facilities are selected from a firewater supply facility group including a fire hydrant, a fire monitor, a water spray facility, and a foam fire-extinguishing facility.
8. The treatment plant according to claim 1 , wherein, when an auxiliary facility selected from an auxiliary facility group including a plurality of firewater supply heads for a water spray facility configured to supply fire-extinguishing water, a plurality of foam heads for a foam fire-extinguishing facility configured to supply foam-like fire-extinguishing water, a curb configured to prevent a liquid having flowed out onto a ground from flowing to an outside, a catch basin configured to discharge a liquid flowing on the ground, and a surface water drainage facility configured to guide a liquid flowing on the ground to a drain ditch by inclination of the ground is provided in a machine placement region divided into the four or more firewater supply sections, the auxiliary facility is provided in one of the firewater supply sections, each serving as an installation unit, without being located in a plurality of firewater supply sections or lying over a border of a plurality of firewater supply sections.
9. A method of designing a treatment plant for handling a flammable fluid, the method comprising:
a step of determining positions at which a plurality of equipments configured to handle the flammable fluid are arranged for an equipment placement region of a site of the treatment plant;
a step of dividing the equipment placement region into four or more firewater supply sections so that the firewater supply sections include the equipments, respectively; and
a step of determining, for each of the firewater supply sections, installation of a plurality of fire-extinguishing water supply facilities having a capacity to, when a fire occurs in one of the equipments placed in the firewater supply sections, simultaneously supply fire-extinguishing water to a fire-occurrence section corresponding to a firewater supply section among the four or more firewater supply sections in which the fire has occurred and an adjacent section being a firewater supply section among the four or more firewater supply sections that is less than a preset safety clearance distance away from the fire-occurrence section,
wherein the preset safety clearance distance prevents the spread of fire across the preset safety clearance distance,
wherein, in the step of dividing the equipment placement region, the equipment placement region is divided so that a distance from the fire-occurrence section to a second firewater supply section next to the adjacent section always becomes equal to or larger than the preset safety clearance distance when any of the four or more firewater supply sections becomes the fire-occurrence section,
wherein the treatment plant is a plant, that handles the flammable fluid or performs a treatment using the flammable fluid.
10. The method of designing a treatment plant according to claim 9 , wherein the safety clearance distance is set to fall within a range of from 3 meters to 50 meters.
11. The method of designing a treatment plant according to claim 9 ,
wherein the step of determining positions at which the equipments are arranged includes determination of a position at which a pipe rack being a frame configured to hold a plurality of pipes through which a fluid to be sent and received between the plurality of equipments is placed in the equipment placement region is arranged, and
wherein the safety clearance distance is regarded as being ensured between two firewater supply sections among the four or more firewater supply sections that are located facing each other across the pipe rack.
12. The method of designing a treatment plant according to claim 9 , further comprising a step of calculating a firewater supply amount to be supplied to the fire-occurrence section and the adjacent section for each of the firewater supply sections and determining a capacity to supply fire-extinguishing water to the plurality of fire-extinguishing water supply facilities based on a maximum value of the firewater supply amount.
13. The method of designing a treatment plant according to claim 12 , further comprising a step of determining a water drainage capacity of the treatment plant based on the maximum value of the firewater supply amount.
14. The method of designing a treatment plant according to claim 13 , wherein, when an estimated water drainage amount in view of precipitation on a site of the treatment plant is larger than the maximum value of the firewater supply amount, the water drainage capacity of the treatment plant is determined based on the estimated water drainage amount in the step of determining the water drainage capacity of the treatment plant.
15. The method of designing a treatment plant according to claim 9 , wherein the fire-extinguishing water supply facilities are selected from a firewater supply facility group including a fire hydrant, a fire monitor, a water spray facility, and a foam fire-extinguishing facility.
16. The method of designing a treatment plant according to claim 9 , further comprising a step of determining installation of an auxiliary facility selected from an auxiliary facility group including a plurality of firewater supply heads for a water spray facility configured to supply fire-extinguishing water, a plurality of foam heads for a foam fire-extinguishing facility configured to supply foam-like fire-extinguishing water, a curb configured to prevent a liquid having flowed out onto a ground from flowing to an outside, a catch basin configured to discharge a liquid flowing on the ground, and a surface water drainage facility configured to guide a liquid flowing on the ground to a drain ditch by inclination of the ground,
wherein the installation of the auxiliary facility is determined so that the auxiliary facility is provided in one of the firewater supply sections, each serving as an installation unit, without being located in a plurality of firewater supply sections or lying over a border of a plurality of firewater supply sections.
17. The treatment plant according to claim 1 , wherein the treatment plant is at least one of a natural gas plant, a petroleum refining plant, a chemical plant, or a nuclear power plant.
18. The treatment plant according to claim 9 , wherein the treatment plant is at least one of a natural gas plant, a petroleum refining plant, a chemical plant, or a nuclear power plant.