KR101751847B1

KR101751847B1 - Structure and method of arrangement of machinery room in floating vessel

Info

Publication number: KR101751847B1
Application number: KR1020150130410A
Authority: KR
Inventors: 이제명; 양성길; 최찬성; 박경열
Original assignee: 대우조선해양 주식회사
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2017-06-28
Also published as: KR20170032709A

Abstract

Disclosed is a disposition structure and a disposing method of a machine room in a floating body.
According to the present invention, it is possible to optimize the arrangement of the machine room in which the compressor unit and the pump unit are provided, so as to minimize the influence of the compressor unit and the pump unit from the external environment and minimize the influence of the marine suspension from the compressor unit and the pump unit have.
In addition, according to the present invention, since the manufacturing process of the machine room is performed separately from the drying process of the floating floors, it is possible to mount the machine room in the drying process of the floating floors on the wall, thereby shortening the entire drying period of the floating floors, It is possible to provide a flexible drying process.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of arranging a machine room in a floating body,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an arrangement structure and a method of arranging a machine room in a floating body, and more particularly, to a structure and an arrangement method of a fuel supply equipment installed in a machine room as a structure for supplying fuel to an engine of a floating body.

In the case of engines using natural gas or petroleum gas as fuel compared to engines using conventional oil as fuel, the emissions of SOx and NOx pollutants are advantageous . Particularly, as the regulation of exhaust gas discharged from marine floating bodies is strengthened, the demand of engines using such gas as fuel is increasing.

There are various types of engines that are installed in floating floors and use gas as fuel. For example, there is a MEGI engine which is driven by supplying natural gas at a high pressure of about 150 to 300 bar.

On the other hand, a structure for supplying gas to the fuel is mounted in a suspended body having a gas-fueled engine. For example, in a marine suspended body having an engine using gas as a fuel, a natural liquefaction gas (Boil off Gas) discharged from a storage tank storing a liquefied gas, that is, a liquefied gas, There is a case where a pump unit, which is a constitution for vaporizing and liquefying the liquefied gas discharged from the compressor unit for supplying the liquefied gas and the liquefied gas storing the liquefied gas and supplying the liquefied gas to the engine, is provided in the machinery room.

However, since the compressor unit and the pump unit generate vibration and noise during the driving process, it is necessary to minimize the influence of such vibration and noise on the floating matters. Further, the rolling motion of the floating object can affect the driving of the compressor unit or the pump unit. Therefore, it is necessary to optimize the arrangement of the compressor unit or the pump unit inside the machine room.

In other respects, conventionally, there has been a restriction that the process of installing the machine room having the compressor unit and the pump unit on the floating floors must be performed only on the upper part of the floating float in the dock.

That is, in order to mount the machine room on the hull of the floating body, a separate foundation is attached to the upper part of the hull of the floating body, and the machine room is mounted by installing the compressor unit and the pump unit. Since these foundations must be fixed to the hull, the installation of the machine room had to be done at the top of the marine suspended within the dock. That is, since the installation work of the machine room can not be performed in the quay wall, there is a problem in that the drying time of the entire marine floating body takes a long time.

It is therefore an object of the present invention to optimize the placement of the machine room in which the compressor unit and pump unit are provided to minimize the impact of the compressor unit and pump unit from the external environment and to reduce the impact of the marine suspension from the compressor unit and pump unit To minimize it.

Another object of the present invention is to provide a machine room manufacturing method and a method for manufacturing a machine room, which are capable of mounting a machine room in a drying process of a floating body on a quay wall, thereby shortening the entire drying period of the floating body, To provide a resilient drying process of the float.

According to an aspect of the present invention, there is provided an arrangement structure of a machine room provided in a floating body, wherein a compressor for supplying an evaporative gas discharged from a storage tank, which stores the fuel, unit; And a pump unit for vaporizing the liquefied gas discharged from the storage tank storing the fuel and supplying the liquefied gas to the engine; Wherein the machine room is provided on the left or right side of the marine suspension, and the compressor unit is disposed near the longitudinal center line of the marine suspension in the machine room, so that the vibration generated in the compressor unit is transmitted to the marine suspension And reducing the influence of the transverse movement of the marine suspension on the compressor unit.

An upper deck installed inside the machine room so as to be spaced apart from a bottom surface of the machine room; The pump unit further comprising: a liquefied gas flow line for providing a path through which the liquefied gas is transported; Wherein the pump unit is provided in the upper deck and the liquefied gas flow line may extend downwardly from the pump unit so that the liquefied gas can be lowered by gravity when the pump unit is shut down have.

The compressor unit comprising: a compressor unit motor for providing a driving force to the compressor unit; And the compressor unit may be arranged such that the compressor unit motor faces the stern side.

The compressor unit motor may be disposed vertically below the hatch provided at the upper end of the machine room.

An additional deck that forms a bottom surface of the machine room inside the machine room and allows the machine room to be spaced upward from the hull of the ship; May be further included.

The additional deck may be formed so as to be inclined so that the liquid formed on the bottom of the machine room is collected in one place.

A pad disposed between the compressor unit and the additional deck such that the compressor unit is installed horizontally in the machine room; May be further included.

According to another aspect of the present invention, there is provided a method of disposing a machine room in a floating object, the method comprising: installing an additional deck to form a bottom surface of a machine room installed in a floating object; A compressor unit for supplying an evaporative gas discharged from a storage tank for storing fuel to an engine provided in a floating suspension; and a pump unit for vaporizing the liquefied gas discharged from a storage tank for storing fuel and supplying the liquefied gas to the engine, Installing in a machine room; Covering a cover forming side and back sides of the machine room; And installing the machine room on the hull of the floating suspension; A method of disposing a machine room in a marine suspension capable of modularizing the machine room separately from the marine suspension is provided.

The machine room may be installed on the left or right side of the marine suspended body, and the compressor unit may be disposed in the machine room close to the longitudinal center line of the marine suspended body.

Said pump unit comprising: a liquefied gas flow line providing a path through which liquefied gas is transported; Wherein the pump unit is installed in an upper deck that is spaced apart from the bottom of the machine room and the liquefied gas flow line is configured to allow the liquefied gas to descend downward by gravity when the pump unit is shut down, And may extend downward from the pump unit.

The additional deck may be inclined so that the liquid formed on the bottom of the machine room is collected in one place.

The step of installing the machine room on the hull of the marine suspended body may be performed during the step of installing the marine vessel during the drying of the marine suspended body.

According to the present invention, it is possible to optimize the arrangement of the machine room in which the compressor unit and the pump unit are provided, so as to minimize the influence of the compressor unit and the pump unit from the external environment and minimize the influence of the marine suspension from the compressor unit and the pump unit have.

Also, according to the present invention, since the manufacturing process of the machine room is performed separately from the drying process of the marine suspension, it is possible to mount the machine room in the process of drying the marine suspension at the seam, thereby shortening the overall drying period of the marine suspension, It is possible to provide a flexible drying process.

FIG. 1 is a plan view showing a position of a machine room in a marine suspension to which a structure of a machine room in a marine suspension according to an embodiment of the present invention can be applied.
2 is a plan view illustrating a schematic arrangement structure of a machine room in a marine suspended body according to an embodiment of the present invention.
3 is a view illustrating an example of a compressor unit included in a machine room in a floating body according to an embodiment of the present invention.
FIG. 4 is a plan view showing an arrangement structure of a compressor unit included in a mechanical room in a floating body according to an embodiment of the present invention.
5 is a view showing an example of a pump unit provided in a machine room in a floating body according to an embodiment of the present invention.
6 is a plan view showing an arrangement structure of a pump unit provided in a machine room in a floating body according to an embodiment of the present invention.
7 is a side cross-sectional view of a compressor unit and a pump unit provided in a mechanical room in a floating body according to an embodiment of the present invention, as viewed from the side.
8 is a side cross-sectional side view of the shape of the inclined bottom surface of the machine room in the marine suspension according to an embodiment of the present invention.
9 is an enlarged view of the dotted line portion in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention will be described with reference to an embodiment shown in the drawings, but it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

FIG. 1 is a plan view showing a position of a machine room in a marine suspension to which a structure of a machine room in a marine suspension according to an embodiment of the present invention can be applied.

Meanwhile, the marine suspended body to which the present invention can be applied may be a marine floating body having an engine using gas fuel. At this time, the gas is a concept including petroleum gas (Petroleum Gas) and natural gas (methane-based natural gas).

As shown in FIG. 1, a marine suspension 1 according to an embodiment of the present invention is provided with a machine room 2 having structures for supplying gas as fuel to the engine. According to an embodiment of the present invention, the machine room 2 may be disposed at the stern side. In FIG. 1, the machine room 2 is disposed on a starboard on the stern side. Alternatively, the machine room 2 may be disposed on a portside on the stern side.

2 is a plan view illustrating a schematic arrangement structure of a machine room in a marine suspended body according to an embodiment of the present invention.

As shown in FIG. 2, the machine room 2 in the marine suspension according to an embodiment of the present invention includes a fuel supply device 10 for supplying gas to an engine using gas as fuel, and handles liquefied gas as a cargo The cargo handling equipment 20 and the glycol system equipment 30 for carrying out the present invention. As shown in FIG. 2, the fuel supply equipment 10 may be located on the bow side in the machine room 2, according to an embodiment of the present invention. At this time, the cargo handling equipment 20 may be provided with a cargo compressor 22 for compressing gas. The cargo compressor 22 may be, for example, an HD compressor.

On the other hand, in the case where an engine using gas as a fuel is provided, two lines for supplying fuel to the engine largely flow. In other words, it flows as two types of fluids in a liquid state liquefied gas and a gaseous state. Both types of fluids need to be controlled through separate equipment. Among them, the compressor unit 110 is configured to supply the evaporation gas to the engine, and the pump unit 120 is configured to supply the liquefied gas. The liquefied gas flowing through the pump 120 unit is supplied to the engine after forced evaporation. The fuel supply equipment 10 may further include a remelting device 130 for re-liquefying the evaporation gas not supplied to the engine. There are various methods for the liquid remover 130 to re-liquefy the evaporated gas. For example, the redistribution device 130 may operate in such a manner that it recovers the cold heat of the evaporated gas and re-liquefies the other evaporated gas. On the other hand, the remelting device 130 may be installed on the bottom of the machine room, that is, on the additional deck to be described below.

2, a partition wall 40 may be provided between the cargo handling equipment 20 and the glycol system equipment 30.

The fuel supply equipment 10 and the cargo handling equipment 20 are configurations that handle fuel, especially gas. Therefore, the risk of gas leakage from the fuel supply equipment 10 and the cargo handling equipment 20 is large. Therefore, the area where the fuel supply equipment 10 and the cargo handling equipment 20 are installed is a gas dangerous zone in which there is a high risk of accidents due to gas leakage.

On the other hand, since the glycol system equipment 30 does not handle gas, the risk of gas leakage is relatively small. Therefore, the area where the glycol system equipment 30 is installed is a gas safe zone where the risk of accidents due to gas leakage is small. The partitioning wall 40 is a structure for distinguishing this gas danger zone from the gas safety zone.

2, the cargo compressor 22, which is a constitution of the cargo handling apparatus 20, may be installed in the gas safety zone provided with the glycol system equipment 30 through the partition wall 40. [

Equipment equipped with explosion proof equipment is required to be installed in a gas danger zone, in particular, equipment using electricity, in order to prevent damage in case of fire and explosion accident due to gas leakage. On the other hand, in the case of equipment using electricity provided in a gas safety zone, there is no need to install such explosion-proof equipment. Therefore, according to the present invention, the equipment using electricity installed in the fuel supply equipment 10 and the cargo handling equipment 20 provided in the gas dangerous area can have explosion-proof equipment. On the other hand, the equipment using electricity installed in the glycol system equipment 30 provided in the gas safety zone does not have explosion-proof equipment.

However, according to the present invention, the cargo compressor 22 of the cargo handling equipment 20 may not have an explosion proof facility. In other words, since the cargo compressor 22 is installed in the gas safe area through the partition wall 40, it can be safely protected from fire and explosion due to gas leakage without having explosion-proof equipment. Therefore, according to the present invention, it is possible to reduce the number of equipment requiring expensive explosion-proof equipment.

The present invention aims to optimize the arrangement of the fuel supply equipment constituting the machine room so as to minimize the influence of the compressor unit and the pump unit from the external environment and minimize the influence of the marine suspension from the compressor unit and the pump unit . The arrangement of the fuel supply equipment will be described in detail below.

FIG. 3 is a view illustrating an example of a compressor unit included in a machine room in a floating body according to an exemplary embodiment of the present invention. FIG. 4 is a cross-sectional view of a compressor unit included in a machine room in a floating body according to an exemplary embodiment of the present invention. Is a plan view showing the arrangement structure.

3 and 4, the compressor unit 110 constituting the fuel supply equipment 10 is disposed in the port side of the bow side in the machine room 2. [ The compressor unit 110 also includes a compressor unit motor 112 that provides a driving force for the compressor unit 110 to be driven. At this time, the compressor unit 110 can be arranged such that the compressor unit motor 112 faces the stern side.

According to an embodiment of the present invention, in order to repair a part of the internal structure of a machine room, there is a need to provide a hatch for providing a path for the equipment or the person to enter the inside of the machine room, 50 may be provided at the upper end of the machine room 2. At this time, the compressor unit motor 112 may be disposed in the vertical direction below the hatch 50 provided at the upper end of the machine room 2.

3 and 4, the compressor unit 110 is provided in the fuel supply equipment 10 on the left side of the hull of the above-mentioned marine suspension.

The compressor unit 110 occupies the largest volume in the fuel supply equipment 10 and generates a large amount of vibration and noise during the driving process. In addition, as described above, the compressor unit 110 is configured to supply gas to the engine using gas as fuel, so that the influence of the rolling motion generated while the floating body floats on the sea can be minimized.

On the other hand, as shown in FIG. 1, the machine room 2 including the fuel supply equipment 10 is disposed on a stern side starboard, and according to an embodiment of the present invention, The influence of the compressor unit 110 due to the rolling motion of the marine suspension can be minimized by disposing the compressor unit 110 close to the center of the marine suspension. Since the marine floating body has a greater thickness than the marine floating body, the marine floating body can more reliably support the compressor unit 110 by placing the compressor unit 110 closer to the center of the marine floating body, So that the vibration and noise generated in the first and second passages 110 and 110 can be more effectively absorbed.

In addition, when the compressor unit motor 112 malfunctions by placing the compressor unit motor 112 below the vertical direction of the hatch 50 provided at the upper end of the machine room 2, the compressor unit motor 112 to the outside so that the compressor unit motor 112 can be quickly maintained.

FIG. 5 is a view illustrating an example of a pump unit included in a mechanical room in a floating suspension according to an embodiment of the present invention. FIG. 6 is a perspective view of a pump unit installed in a mechanical room in a floating suspension according to an embodiment of the present invention. Is a plan view showing the arrangement structure.

Referring to Figs. 5 and 6, the fuel supply equipment 10 includes a pump unit 120 for vaporizing liquefied gas and supplying it to the engine. Further, as will be described later, the machine room further includes an upper deck provided spaced from the bottom of the machine room, and the pump unit 120 is mounted on this upper deck 48. [ The arrangement of the pump unit 120 will be described in detail with reference to FIG.

7 is a side cross-sectional view of a compressor unit and a pump unit provided in a mechanical room in a floating body according to an embodiment of the present invention, as viewed from the side.

Referring to FIG. 7, an additional deck 42 is provided at the lower end of the machine room 2. The bottom deck 44 of the machine room 2 is formed by the additional deck 42. The machine room 2 also includes a cover 46 that physically blocks the inside and outside of the machine room. As described above, the compressor unit 110 and the pump unit 120 are provided in the machine room 2. [

On the other hand, as shown in Fig. 7, the machine room 2 further includes an upper deck 48 which is installed to be spaced from the bottom surface of the machine room 2. As described above, the upper deck 48 may be provided with a pump unit 120 so that the pump unit 120 may be installed so as to be spaced apart from the bottom surface of the machine room 2. The pump unit 120 also includes a liquefied gas flow line (not shown) that provides a path through which the liquefied gas is delivered from the storage tank to the pump unit 120. At this time, the liquefied gas flow line may be provided to extend downward from the pump unit 120 so that the liquefied gas can be descended downward by gravity.

According to an embodiment of the present invention, the pump unit 120 is installed so as to be spaced from the bottom of the machine room and the liquefied gas flow line extends downward, thereby preventing the liquefaction of the liquefied gas. That is, when the driving of the pump unit is stopped, liquefied gas remains in the liquefied gas flow line. However, when some of the liquefied gas flow lines are provided horizontally, such a phenomenon occurs that the remaining liquefied gas accumulates. When such residual liquefied gas is evaporated and supplied to the pump unit, the pump unit for compressing the liquid may be damaged. This remaining liquefied gas is also not preferable in view of the waste of the fuel. There is also a problem that damage problems can occur. However, by providing the liquefied gas flow line so as to extend downward, the liquefied gas can be recovered to the storage tank by gravity, thereby solving this problem.

8 is a side cross-sectional side view of the shape of the inclined bottom surface of the machine room in the marine suspension according to an embodiment of the present invention.

Referring to FIG. 8, the bottom surface 44 formed by the additional deck 42 may be formed obliquely.

The fuel supply equipment 10 constituting the compressor unit and the pump unit is configured to handle liquefied gas or vaporized gas at a cryogenic temperature. Inside the machine room including the fuel supply equipment 10, State. Therefore, in many cases, liquid condensed with water vapor exists in the bottom of the machine room. Therefore, by forming the bottom surface to be inclined, such liquid can be collected in one place or discharged to the outside. At this time, the slope of the bottom surface 44 may be formed so that the center of the bottom of the machine room is recessed, and a separate discharge passage for discharging the liquid condensed in the machine room to the outside may be further provided.

When the inclination of the bottom surface 44 is formed, the compressor unit 110 installed on the bottom surface of the machine room 2 may be inclined. Referring to FIG. 8, in order to solve such a problem, a pad such as a dotted line area may be installed. The details of the pad will be described in detail in Fig.

8 is an enlarged view of the dotted line portion in Fig.

Referring to FIG. 8, a pad 54 is provided between the compressor unit 110 and the bottom surface 44. The pad 54 allows the compressor unit 110 mounted on the inclined bottom surface 44 to be installed horizontally without tilting.

[0034] The following will describe a step of installing a machine room including a compressor unit and a pump unit in a floating suspension.

First, an additional deck is provided to form the bottom surface of the machine room installed in the floating object. Then, the compressor unit and the pump unit are installed in the additional deck and the upper deck, respectively. Concrete installation positions of the compressor unit and the pump unit have been described above. Then cover the side and upper sides of the machine room. Thereby, the machine room as one unit is completed. Finally, the machine room is installed on the hull of a floating suspension.

According to the present invention, there is an advantage that the step of installing the machine room on the floating float can be performed during the wall construction process during the drying process of the floating float, so that the drying period of the floating float can be shortened.

That is, conventionally, in order to mount the machine room on the hull of the floating body, a separate foundation is attached to the upper part of the hull of the floating body, and the machine room is mounted by installing the compressor unit and the pump unit. Since these foundations must be fixed to the hull, the installation of the machine room had to be done in the dock. In other words, conventionally, the installation work of the machine room can not be performed at the seawall, so that there is a problem that the entire drying time of the marine suspended body takes a long time.

On the other hand, according to the present invention, it is possible to install the machine room on the floating body even in the stage where the floating body is dried on the seawall, not on the dock, by preassembling the machine room as a separate independent unit before installing on the floating body, So that the drying time of the suspended matters can be shortened.

On the other hand, the components constituting the machine room have a problem of generating a lot of vibration and noise during operation. This is not good in terms of stability of the hull and adversely affects the work and living environment of the manpower in the marine suspended body. Therefore, conventionally, when a machine room is installed on the hull of a suspended body of water, a separate vibration reduction device is installed at the lower end of the machine room.

However, according to the present invention, an additional deck is installed without a separate vibration reduction device, thereby minimizing the vibration and noise problems due to the operation of the machine room.

1 - Marine floating
2 - Machine room
10 - Fuel supply equipment
20 - Cargo handling equipment
22 - Cargo Compressor
30 - Glycol System Equipment
40 -
42 - Additional Deck
44 - Bottom
46 - Cover
48 - Top deck
50 - Hatch
54 - pad
110 - Compressor unit
112 - Compressor unit motor
120 - Pump unit
130 - Re-liquefying device

Claims

In an arrangement structure of a machine room provided in a floating body,
The machine room comprises:
A compressor unit for supplying evaporative gas discharged from the liquefied gas storage tank to the engine;
A pump unit for vaporizing the liquefied gas supplied from the liquefied gas storage tank and supplying it to the engine; And
A liquefied gas flow line for providing a transfer path of the liquefied gas from the liquefied gas storage tank to the pump unit;
Additional decks forming the underside of the machine room; And
And an upper deck installed to be spaced upward from a bottom surface of the machine room,
The machine room is provided on the left or right side of the ship,
Wherein the compressor unit is disposed closer to the longitudinal center line of the floating suspension in the machine room than the pump unit, thereby reducing the influence of the vibration generated in the compressor unit on the floating suspension, and the transverse movement of the floating suspension Reducing the impact on the compressor unit,
Wherein the compressor unit is disposed on the additional deck and the pump unit is disposed on the upper deck and the liquefied gas flow line extends downwardly from the pump unit to a spaced space between a bottom surface of the machine room and the upper deck The liquefied gas in the line can be prevented from being lengthened,
Arrangement structure of machine room in floating floors.

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The method according to claim 1,
The compressor unit includes:
A compressor unit motor for providing a driving force to the compressor unit; / RTI >
Wherein the compressor unit is arranged such that the compressor unit motor faces the stern side,
Arrangement structure of machine room in floating floors.

The method of claim 3,
Wherein the compressor unit motor is disposed in a vertically lower portion of a hatch provided at an upper end of the machine room,
Arrangement structure of machine room in floating floors.

The method according to claim 1,
The machine room comprises:
A cargo handling device provided behind the compressor unit and the pump unit toward the stern side for handling the liquefied gas;
A glycol system equipment provided rearward from the cargo handling equipment to the stern side; And
Further comprising a partition wall disposed between the cargo handling equipment and the glycol system equipment,
The cargo handling equipment comprises:
And a cargo compressor for compressing the gas,
Wherein the cargo compressor is protruded from the cargo handling equipment in a stern side direction so as to pass through the partition wall,
Characterized in that the equipment on the forward side with respect to the partitioning wall is equipped with explosion proof equipment.
Arrangement structure of machine room in floating floors.

The method according to claim 1,
Wherein the additional deck is formed obliquely so that the liquid formed at the bottom of the machine room can be gathered in one place,
Arrangement structure of machine room in floating floors.

The method of claim 6,
Inside the machine room,
A pad between the compressor unit and the additional deck such that the compressor unit is installed horizontally; .
Arrangement structure of machine room in floating floors.

In a method for disposing a machine room in a floating object,
(a) installing an additional deck to form the bottom of the machine room installed in the floating body;
(b) installing an upper deck so as to be spaced upward from a bottom surface of the machine room;
(c) a compressor unit for supplying an evaporative gas discharged from the liquefied gas storage tank to the engine, the pump unit for supplying the engine after vaporizing the liquefied gas discharged from the liquefied gas storage tank on the additional deck, Placing on a deck;
(d) completing the machine room as one unit separate from the marine suspension by covering a cover forming a side surface and an upper surface of the machine room; And
(e) installing the machine room on the hull of the floating suspension,
Wherein the machine room is installed on the left or right side of the ship,
Wherein the compressor unit is provided closer to the longitudinal center line of the floating suspension than the pump unit in the machine room,
Characterized in that the installation work of the machine room is performed in the step of stern wall construction during the drying operation of the marine suspended body.
Arrangement of machinery rooms in floating floors.

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The method of claim 8,
In the step (c)
And a liquefied gas flow line for providing a transfer path of the liquefied gas from the liquefied gas storage tank to the pump unit,
Characterized in that the liquefied gas flow line extends downwardly from the pump unit to a spaced space between the bottom surface of the machine room and the upper deck to prevent liquefaction of the liquefied gas in the line.
Arrangement of machinery rooms in floating floors.

The method of claim 8,
In the step (a), the additional deck is sloped so that the liquid formed on the bottom of the machine room can be gathered in one place.
Arrangement of machinery rooms in floating floors.

The method of claim 11,
Inside the machine room,
A pad between the compressor unit and the additional deck such that the compressor unit is installed horizontally; .
Arrangement of machinery rooms in floating floors.

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