KR20150022143A - Method for measuring enclosed space and enclosed space apparatus for ship - Google Patents

Method for measuring enclosed space and enclosed space apparatus for ship Download PDF

Info

Publication number
KR20150022143A
KR20150022143A KR20130099530A KR20130099530A KR20150022143A KR 20150022143 A KR20150022143 A KR 20150022143A KR 20130099530 A KR20130099530 A KR 20130099530A KR 20130099530 A KR20130099530 A KR 20130099530A KR 20150022143 A KR20150022143 A KR 20150022143A
Authority
KR
South Korea
Prior art keywords
gas
concentration
suction hose
pump
closed
Prior art date
Application number
KR20130099530A
Other languages
Korean (ko)
Inventor
김상철
허만주
김상홍
김근만
송향연
Original Assignee
대우조선해양 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR20130099530A priority Critical patent/KR20150022143A/en
Publication of KR20150022143A publication Critical patent/KR20150022143A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0067—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display by measuring the rate of variation of the concentration
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14—Toxic gas alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Medicinal Chemistry (AREA)
  • Ocean & Marine Engineering (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A closed space gas measurement device for a ship is disclosed. The apparatus for measuring the confined space gas of a ship according to an embodiment of the present invention includes: a suction hose located inside the confined area for measuring the concentration of each of the plurality of confined areas formed in the vessel; A header coupled to a rear end of the suction hose; A first pump installed behind the header for sucking gas remaining in the closed space through the suction hose; And a gas sensing unit installed at a rear end of the first pump and sensing the concentration of gas remaining in the closed space sucked through the first pump.

Figure P1020130099530

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for measuring gas in a closed space of a ship,

The present invention relates to a method for measuring a gas concentration in a closed space formed on a ship, and more particularly, to a method for measuring a concentration of a gas before a worker puts the closed space into a closed space, And a measuring method using the same.

In general, as the work in the ocean increases, the risk of workers' smokes or fire accidents and explosions increases in confined spaces. Therefore, safety personnel are required to have a gas meter for each individual before entering the confined space operator , The operator manually opens the multi-manifold gas collecting valve using the portable gas detector in the closed space or the multi-manifold gas measuring system in the closed space, and separately measures the gas concentration by attaching the gas detector .

However, since the operator must separately purchase a portable gas detector for gas measurement in the closed space, the economical burden is increased, and the multi gas measurement system must manually measure the concentration of the gas in the closed space, Is becoming the main cause of the increase.

Therefore, there is an urgent need for an apparatus and a method for measuring and managing the gas concentration for a plurality of closed spaces.

Korean Patent Publication No. 10-2008-0112884 (Disclosure Date: December 26, 2008)

Embodiments of the present invention provide a safe work environment to a worker in a vessel having an airtight space, thereby preventing safety accidents and performing unnecessary workforce allocation more efficiently.

According to an aspect of the present invention, there is provided a hose comprising: a suction hose positioned within the enclosure for measuring a respective gas concentration for a plurality of enclosed spaces formed in a ship; A header coupled to a rear end of the suction hose; A first pump installed behind the header for sucking gas remaining in the closed space through the suction hose; And a gas sensing unit installed at a rear end of the first pump and sensing the concentration of gas remaining in the closed space sucked through the first pump.

The suction hose includes a plurality of auxiliary suction hoses arranged at different heights inside the closed area.

The suction hose includes a filter unit for filtering the foreign matter contained in the gas sucked in the closed area.

The gas measuring device includes a solenoid valve provided in each of a plurality of suction hoses.

The gas measuring device includes a three-way valve provided at a front end of the header portion.

The gas measuring device includes a water separator installed between the first pump and the gas sensing part and for removing water contained in the gas sucked through the suction hose.

Wherein the gas sensing unit comprises: an oxygen sensing unit for sensing an amount of oxygen remaining in the closed space; And a combustible gas sensing unit for sensing the amount of the combustible gas remaining in the closed space.

The gas measuring device includes an alarm part which is operated when the gas concentration of the closed area exceeds the reference concentration through the gas sensing part.

The gas measuring apparatus includes a display unit in which a plurality of suction hoses, a concentration of gas detected through the gas sensing unit, and various functions are indicated by icons.

The gas measuring device includes a controller for controlling the number of revolutions per minute of the first pump to regulate the suction amount sucked through the suction hose and to provide the gas concentration of the closed area sensed through the gas sensing part to the manager.

The gas measuring apparatus includes a second pump for sucking outside air to the header section to check the presence or absence of leakage of a plurality of suction hoses.

A method for measuring a closed space gas of a ship according to an embodiment of the present invention includes installing a suction hose in the closed space to measure the gas concentration of each closed space prior to the operation of the plurality of closed spaces formed on the ship step; Operating the first pump for a predetermined time to measure the gas concentration with respect to the closed space in which the suction hose is located, thereby sucking gas inside the closed space; Measuring the concentration of the inhaled gas and comparing the measured concentration with a preset reference value; And determining the possibility of operation according to the gas concentration for each of the measured closed spaces, and providing it to the manager.

Embodiments of the present invention provide accurate gas concentrations for a more secure operation to a large number of operators performing work in the enclosed area of a vessel, So that an efficient operation can be performed.

One embodiment of the present invention avoids unnecessary expense since workers do not need to carry a gas detector separately.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a configuration of an apparatus for measuring a confined space gas of a ship according to an embodiment of the present invention; FIG.
2 is a block diagram showing a configuration of a control unit and a control unit of a confined space gas measurement apparatus of a ship according to an embodiment of the present invention.
3 is a view showing a display unit of a confined space gas measuring apparatus of a ship according to an embodiment of the present invention.
4 is a flowchart showing a method for measuring a closed space gas of a ship according to an embodiment of the present invention.
5 to 6 are views showing the state of use of the confined space gas measuring apparatus of the ship according to the embodiment of the present invention.

A closed space gas measuring apparatus and a measuring method using the same according to an embodiment of the present invention will be described with reference to the drawings.

1 and 2, an apparatus 1 for measuring a closed space gas of a ship according to an embodiment of the present invention measures the concentration of each gas in a plurality of closed spaces S1 to Sn formed on a ship A suction hose 100 positioned in the closed space S1 to Sn to be connected to the rear end of the suction hose 100 and a header part 200 coupled to a rear end of the suction hose 100, A first pump 300 for sucking gas remaining in the closed spaces S1 through Sn through the hose 100; And a gas sensing unit 400 installed at a rear end of the first pump 300 to sense the concentration of gas remaining in the closed spaces S1 to Sn sucked through the first pump 300. [

The suction hose 100 according to an embodiment of the present invention has a length extending from a few tens of meters to a few hundreds of meters, and a length that can be sufficiently extended regardless of a complicated layout of the ship.

The suction hose 100 uses a polyurethane tube which does not react with the gas remaining in the closed spaces S1 to Sn, but it is not necessarily made of the material but may be changed to another material.

The suction hose 100 is installed in each of a plurality of closed spaces S1 to Sn. In this embodiment, eight closed spaces are defined for convenience of explanation. For reference, enclosed spaces may be enclosed tanks or where only one door is installed.

The suction hose 100 includes an auxiliary suction hose 110 having a plurality of suction hoses 110 disposed at different heights inside the closed spaces S1 to Sn.

For example, when the height of one of the hermetic zones S1 is 10 m, the auxiliary hose 110 is provided with suction hoses for each 3 m, so that remaining gas remaining at different heights can be stably sucked .

The suction hose 100 includes a filter unit 120 for filtering foreign substances contained in the gas sucked in the closed spaces S1 to Sn and the filter unit 120 is an air filter or a nonwoven filter or a wet filter Is selectively used.

The suction hose 100 includes a check valve 101 for preventing the gas from flowing back to the closed spaces S1 to Sn after the gas is sucked into the first pump 200, The gas sucked into the hose 100 is prevented from flowing back to the closed spaces S1 to Sn. For reference, the suction hose 100 is provided with a magnet so that the hose 100 is kept attached to the closed spaces S1 to Sn.

The gas measuring device 1 according to an embodiment of the present invention includes a solenoid valve 2 provided in each of a plurality of suction hoses 100. The solenoid valve 2 is controlled by a controller 500 Respectively. The solenoid valve 2 is controlled to be turned on and off and is switched to an open state when the gas is sucked in the closed region, and is closed when it is not sucked.

A header portion according to an embodiment of the present invention will be described with reference to the drawings.

The header portion 200 is positioned at the rear end of the solenoid valve 2 and is provided with a 3-way valve 3, and the 3-way valve 3 is controlled by the control portion 500, 1 movement of the gas from the suction hose 100 to the header part 200 is enabled and switched as possible when the pump 300 is operated to suck the gas for the sealing areas S1 to Sn.

The gas measuring device 1 according to the present invention is provided between the first pump 300 and the gas sensing part 400 and includes a moisture separator for removing water contained in the gas sucked through the suction hose 100, (4). The water separator 4 may suck only the dried gas into the gas sensing part 400 to prevent malfunction and failure due to moisture inflow.

A first pump according to an embodiment of the present invention will be described.

The first pump 300 is provided with a pump having a capacity at which the rotation speed per minute is controlled by the control unit 500 and the suction force is not reduced even when the length of the suction hose 100 is relatively long.

A gas sensing unit according to an embodiment of the present invention will be described.

The gas sensing unit 400 includes an oxygen sensing unit 410 for sensing the amount of oxygen remaining in the closed spaces S1 to Sn and a combustible gas sensing unit 420 for sensing the amount of the combustible gas remaining in the closed space .

The oxygen sensing unit 410 is installed to check the oxygen concentration inside the sealed zone and confirm that the operator can input the combustible gas. The combustible gas sensing unit 420 may be an LNG It is installed to detect the concentration of LPG gas and to judge whether the worker is safe to work.

The oxygen sensing unit 410 and the combustible gas sensing unit 420 can be easily identified by the manager since the concentration is displayed in percentage units.

The control unit 500 according to an embodiment of the present invention controls the number of revolutions per minute of the first pump 300 to adjust the suction amount sucked through the suction hose 100, Provides the gas concentration of the sensed enclosure to the administrator.

Since the control unit 500 includes a communication module that controls the overall operating state of the gas measuring device and can provide information in real time to an administrator terminal (not shown) possessed by the manager, even if the manager is located at a remote location, Information can be exchanged.

The gas measuring apparatus 1 according to the present invention includes an alarm unit 5 operated when the gas concentration of the closed zone exceeds the reference concentration through the gas sensing unit 420, Or a warning light may be selectively used.

A display unit according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 3, the gas measuring device 1 includes a plurality of suction hoses 100, a display unit 400 having a plurality of suction hoses 100, (6). The display unit 6 may be an LCD or a touch-display LCD, and an administrator can visually confirm the concentration of the gas sucked through the enclosure through the display unit 6 more clearly.

In the display unit 6 according to an embodiment of the present invention, each of the sealed areas S1 to Sn is indicated by an icon, and the concentrations of the oxygen amount and the amount of the combustible gas are displayed. The automatic scan icon, the reset icon, Icon, an alarm test icon, and a manual action icon.

The gas measuring apparatus 1 according to the embodiment of the present invention includes a second pump 600 for sucking outside air and supplying the outside air to the header unit 200 to check the presence or absence of leakage of the plurality of suction hoses 100 do.

The second pump 600 supplies external air to the solenoid valve 2 provided in the header unit 200 and the external air is supplied to the check valve 101 via the solenoid valve 2 and the suction hose 100 It is possible to test whether the suction hose 100 is leaked or not.

A method for measuring a closed space gas of a ship according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 4, step ST100 of installing a suction hose in the closed area to measure the gas concentration of each closed area prior to the operation of the plurality of closed areas formed on the ship, (ST200) of operating the first pump for a predetermined time to measure the gas concentration with respect to the hermetically closed space in which the hose is located, thereby to measure the concentration of the inhaled gas, (ST300); And determining (ST400) whether or not the operation is possible according to the measured gas concentration for each closed area, and providing the same to the manager (ST400).

The step of installing the suction hose (ST100) may be performed by the operator moving the suction hose 100 inward from the outside of the closed spaces S1 to Sn.

The step of sucking the gas inside the sealed zone (ST200) may sequentially suck the gas to the plurality of the sealed zones S1 to Sn, or may take in the gas at random according to the priority. The gas is sucked in for a period of time, or the first pump is actuated for one minute or more, so that the gas is sucked and not necessarily limited to a specific time.

The step of providing the gas concentration to the manager (ST400) is provided together with the oxygen concentration for the sealed zone and the combustible gas concentration, and it is determined whether the work progresses after confirming the manager and judging whether the worker is available for work in the sealed zone .

The state of use of the confined space gas measuring apparatus and the measuring method using the same according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 2 or FIG. 5, the manager may instruct the operator to confirm the gas concentration of the closed areas S1 to Sn before closing the closed areas S1 to Sn, Sn of the suction hose 100, respectively. The suction hose 100 is attached to the inside of the closed spaces S1 to Sn through a magnet and is installed without any difficulty since the suction hose 100 itself can be installed at a long distance even when the closed spaces are spaced from each other (ST100).

The manager touches the icon displayed on the display unit 6 to turn on the first pump 300 to measure the gas concentration for the closed spaces S1 to Sn. The first pump 300 is operated by a predetermined amount of air and the gas remaining in the respective hermetically sealed regions is sucked through the suction hose 100 through the plurality of suction hoses 100.

For example, the gas remaining in any one of the closed spaces is moved to the three-way valve 3 via the filter unit 120, the check valve 101 and the solenoid valve 2, (ST200) through the water separator (4) by the suction pressure of the gas sensing part (400). The filter unit 120 separates foreign matter contained in the gas to prevent unnecessary foreign matter from being sucked in. The moisture separator 4 removes moisture contained in the sucked gas, (400). For reference, the solenoid valve 2 operates only in a solenoid valve installed in a suction hose in which a gas is sucked, and a solenoid valve installed in a suction hose in which the remaining gas is not sucked is operated in an OFF state.

The gas sensing unit 400 senses the oxygen concentration and the concentration of the combustible gas contained in the gas currently inhaled and transmits the sensed oxygen concentration and the concentration of the combustible gas to the control unit 500. The control unit 500 receives the sensed oxygen concentration and the concentration of the combustible gas, .

If the control unit 500 determines that the concentration of the combustible gas in the closed zone currently inhaled is relatively higher than the reference value after comparing the input oxygen concentration and the reference concentration of the combustible gas (ST300), the control unit 500 controls the alarm unit 5 So that the manager can recognize it (ST400).

The manager suspends the repair and maintenance work after determining that the concentration of the combustible gas in the closed space S1 currently sucked is dangerous to work by the operator and sequentially performs the suction operation to the other closed space S2 .

If the manager intends to check the gas concentration for a specific closed area S6, the manager can skip the gas concentration to the closed area S6 without checking the gas concentration in order to check the concentration of the gas.

The gas sensing device according to the present invention is used as follows to confirm whether or not the suction hose is leaked.

Referring to FIG. 6, the manager opens the first pump 300 and activates the second pump 600 to check whether a specific suction hose 100 is leaked.

The second pump 600 supplies the outside air sucked by the three-way valve 3, and the outside air is supplied simultaneously or sequentially to the plurality of suction hoses 100 via the three-way valve, You can easily check the status of the generated suction hose.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

2: Solenoid valve
3: 3 way valve
4: Moisture separator
5: Alarm section
6:
100: Suction hose
101: Check valve
110: Auxiliary suction hose
120: Filter unit
200: header portion
300: first pump
400: gas sensing unit
500:
600: second pump

Claims (12)

A suction hose located within said enclosure for measuring a respective gas concentration for a plurality of enclosed spaces formed in the vessel;
A header coupled to a rear end of the suction hose;
A first pump installed behind the header for sucking gas remaining in the closed space through the suction hose; And
And a gas sensing unit installed at a rear end of the first pump for sensing the concentration of gas remaining in the closed space sucked through the first pump. The method according to claim 1,
The suction hose,
And a plurality of auxiliary suction hoses disposed at different heights from the inside of the closed area. The method according to claim 1,
The suction hose,
And a filter unit for filtering the foreign substances contained in the gas sucked in the closed zone. The method according to claim 1,
The gas measuring device comprises:
And a solenoid valve provided in each of the plurality of suction hoses. The method according to claim 1,
The gas measuring device comprises:
And a three-way valve provided at a front end of the header portion. The method according to claim 1,
The gas measuring device comprises:
And a water separator installed between the first pump and the gas sensing unit for removing water contained in the gas sucked through the suction hose. The method according to claim 1,
The gas sensing unit includes:
An oxygen sensor for sensing an amount of oxygen remaining in the closed space;
And a combustible gas sensing unit for sensing an amount of the combustible gas remaining in the closed space. The method according to claim 1,
The gas measuring device comprises:
And an alarm unit operated when the gas concentration of the closed zone exceeds the reference concentration through the gas sensing unit. The method according to claim 1,
The gas measuring device comprises:
And a display unit in which a plurality of suction hoses, a concentration of gas detected through the gas sensing unit, and various functions are displayed by icons. The method according to claim 1,
The gas measuring device comprises:
And a control unit for controlling the number of revolutions per minute of the first pump to adjust the suction amount sucked through the suction hose and providing the gas concentration of the closed zone sensed through the gas sensing unit to the manager, Device. The method according to claim 1,
The gas measuring device comprises:
And a second pump for sucking the outside air to supply to the header part to check whether or not there is leakage of the plurality of suction hoses. Installing a suction hose in the sealed zone to measure the gas concentration for each sealed zone prior to work on the plurality of sealed zones formed in the vessel;
Operating the first pump for a predetermined time to measure the gas concentration with respect to the closed space in which the suction hose is located, thereby sucking gas inside the closed space;
Measuring the concentration of the inhaled gas and comparing the measured concentration with a preset reference value; And
Determining whether an operation is possible according to the gas concentration of each of the measured closed spaces, and providing the same to the manager.
KR20130099530A 2013-08-22 2013-08-22 Method for measuring enclosed space and enclosed space apparatus for ship KR20150022143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130099530A KR20150022143A (en) 2013-08-22 2013-08-22 Method for measuring enclosed space and enclosed space apparatus for ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130099530A KR20150022143A (en) 2013-08-22 2013-08-22 Method for measuring enclosed space and enclosed space apparatus for ship

Publications (1)

Publication Number Publication Date
KR20150022143A true KR20150022143A (en) 2015-03-04

Family

ID=53020209

Family Applications (1)

Application Number Title Priority Date Filing Date
KR20130099530A KR20150022143A (en) 2013-08-22 2013-08-22 Method for measuring enclosed space and enclosed space apparatus for ship

Country Status (1)

Country Link
KR (1) KR20150022143A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101658507B1 (en) * 2015-04-20 2016-09-21 주식회사 네오탑 Gas Sampler and Gas leakage Detection Device having the Same
WO2016171394A1 (en) * 2015-04-22 2016-10-27 한라아이엠에스 주식회사 Method for operating ship gas sampling device
KR101672011B1 (en) * 2015-06-29 2016-11-02 삼성중공업 주식회사 Gas sensing device
US10309942B2 (en) 2016-06-22 2019-06-04 Electronics And Telecommunications Research Institute Portable device and method for measuring gas in closed space
CN113049037A (en) * 2021-03-16 2021-06-29 交通运输部天津水运工程科学研究所 Intelligent monitoring system and method for ship with excessive tail gas
KR20230061162A (en) * 2021-10-28 2023-05-08 대우조선해양 주식회사 Hazardous gas monitoring system of ship
KR102585393B1 (en) * 2023-04-12 2023-10-06 에코빅풋 주식회사 Smart safe construction system for surface treatment, repair work mortar and painting of confined space

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101658507B1 (en) * 2015-04-20 2016-09-21 주식회사 네오탑 Gas Sampler and Gas leakage Detection Device having the Same
WO2016171394A1 (en) * 2015-04-22 2016-10-27 한라아이엠에스 주식회사 Method for operating ship gas sampling device
KR101672011B1 (en) * 2015-06-29 2016-11-02 삼성중공업 주식회사 Gas sensing device
US10309942B2 (en) 2016-06-22 2019-06-04 Electronics And Telecommunications Research Institute Portable device and method for measuring gas in closed space
CN113049037A (en) * 2021-03-16 2021-06-29 交通运输部天津水运工程科学研究所 Intelligent monitoring system and method for ship with excessive tail gas
CN113049037B (en) * 2021-03-16 2022-07-29 交通运输部天津水运工程科学研究所 Intelligent monitoring system and method for ship with excessive tail gas
KR20230061162A (en) * 2021-10-28 2023-05-08 대우조선해양 주식회사 Hazardous gas monitoring system of ship
KR102585393B1 (en) * 2023-04-12 2023-10-06 에코빅풋 주식회사 Smart safe construction system for surface treatment, repair work mortar and painting of confined space

Similar Documents

Publication Publication Date Title
KR20150022143A (en) Method for measuring enclosed space and enclosed space apparatus for ship
JP2013517481A (en) Hydrostatic pressure test system and method
US10518301B1 (en) Isolation enclosure and method for conducting hot work
WO2013116933A1 (en) Electronic gas sensor system and methods of operation
KR100849399B1 (en) Multi-area gas leakage detection system using single gas detector
ITRM20080514A1 (en) MONITORING DEVICE FOR A FIRE-FIGHTING DEVICE.
KR20190045032A (en) Portable gas sampler and gas detector using the same
KR20190085235A (en) System for Monitoring and Smart Control of Gas Fire-Extinguishing Facility
JP2015078838A (en) Leakage detection device
KR102452846B1 (en) Inspection vehicle for worker safety in manhole
KR20230036738A (en) Suffocation accident prevention system
KR20170074519A (en) Apparatus and method for inspecting of lng tank
JP2017191001A (en) Gas detector
KR20190039365A (en) Gas Sampler and Gas detection device using the same
KR20140056922A (en) Device for detecting leak of connection part set composition gas multi measurement system in sealing zone and detecting thereof method
KR102325841B1 (en) Liquid Level Measuring Method and Liquid Level Measuring Apparatus With Built-in Alarm By Using LED-module
US10472801B2 (en) System for measuring friction force of excavator swing device for supplying lubricating oil
US20140116992A1 (en) Welding Enclosure
CN113124523A (en) Intelligent poison-measuring and ventilation integrated equipment and ventilation method for electric power well
KR20090109145A (en) Improved maintenance method for ballast tanks gas detectors in double hull tankers
JP2005230524A (en) Display device for fire pump, controlling device for fire pump, and fire pump vehicle
CN201851161U (en) Intelligent coal mine gas drainage detecting and monitoring cabinet
JP3196401U (en) Emergency disaster warning system
KR20150010137A (en) Gas leakage sensing device for ship
CN103978004A (en) Electric ventilating control cabinet

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application