EP2135228B1 - Méthode de détection de gaz autour de systèmes de stockage de gaz - Google Patents

Méthode de détection de gaz autour de systèmes de stockage de gaz Download PDF

Info

Publication number
EP2135228B1
EP2135228B1 EP08723280.7A EP08723280A EP2135228B1 EP 2135228 B1 EP2135228 B1 EP 2135228B1 EP 08723280 A EP08723280 A EP 08723280A EP 2135228 B1 EP2135228 B1 EP 2135228B1
Authority
EP
European Patent Office
Prior art keywords
gas
detectors
enclosed space
flammable
limit
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP08723280.7A
Other languages
German (de)
English (en)
Other versions
EP2135228A1 (fr
EP2135228A4 (fr
Inventor
Ki-Ho Moon
Seok-Lyong Song
Sam-Heon Jeong
Jong-Pil Ha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HD Hyundai Heavy Industries Co Ltd
Original Assignee
Hyundai Heavy Industries Co Ltd
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
Priority claimed from KR1020070023440A external-priority patent/KR100787777B1/ko
Priority claimed from KR1020080019496A external-priority patent/KR100935527B1/ko
Application filed by Hyundai Heavy Industries Co Ltd filed Critical Hyundai Heavy Industries Co Ltd
Publication of EP2135228A1 publication Critical patent/EP2135228A1/fr
Publication of EP2135228A4 publication Critical patent/EP2135228A4/fr
Application granted granted Critical
Publication of EP2135228B1 publication Critical patent/EP2135228B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems

Definitions

  • the present invention relates to flammable gas detection for released gas in a hazardous area of gas carriers, and more particularly it concerns devices and methods of detecting and ventilating leaked flammable gases in hazardous area of a gas carrier. They can immediately detect the leakage of flammable gas in enclosed spaces in gas carriers or onshore or offshore facilities where boil-off gas (BOG) is compressed to be used as fuel or to be re-liquefied, or in any other places of hazardous area where have potential gas leakages to eliminate the possibility of gas explosion.
  • BOG boil-off gas
  • the traditional gas detection system samples the gases at a number of sampling heads around cargo tanks and enclosed spaces of the hazardous area by the procedure regulated in IGC Code (International code for the construction and equipment of ships carrying liquefied gases in bulk).
  • IGC Code International code for the construction and equipment of ships carrying liquefied gases in bulk.
  • the sampled gases are analyzed with a gas analyzer, which is located in a safe area (an accommodation side) according to a predefined sequence.
  • LNG liquefied natural gas
  • LPG liquefied petroleum gas
  • onshore and offshore facilities using boil-off gas generated by atmospheric heat sources have an auxiliary equipment such as cargo compressors or re-liquefaction systems so that boil-off gas is compressed to be used as fuel for propulsion or power generation, or is re-liquefied to be stored as cargo.
  • the cargo compressors or the re-liquefaction systems are installed in a separate enclosed space for the protection and the separation thereof. Gas in the enclosed space is periodically sampled, and analyzed to measure the concentration of the flammable gas contained therein in order to eliminate the possibility of an explosion. That is to say, in an enclosed space such as a cargo compressor room, a valve room and a pump room, gas is periodically sampled and the concentration of the flammable gas contained therein is measured.
  • Conventional gas detection system constituted with a flammable gas analyzer and sampling scheme and it sequentially samples and analyses the sampled gases come from a number of sampling ports in the hazardous area and enclosed spaces of a gas carrier. For analyzing all the sampling head locations including response time, approximately 30 minutes to complete the whole sequences will be taken and this means that the gas release to start right after the previous sampling turn will be continued during maximum 30 minutes and will be detected on the next turn. (In the IGC Code, it is stipulated that the gas detection equipment should be capable of sampling and analyzing for each sampling head location sequentially at intervals not exceeding 30 minutes, except that in the case of gas detection for the ventilation hoods and gas ducts sampling should be continuous).
  • maximum length of pipeline for gas sampling from an analyzer to sampling head locations in the hazardous area is more than 260m, and up to 140 seconds are required for the sampled gas to reach the analyzer. This means, if flammable gas leaks right after the first sampling sequence, there are lots of possibilities to occur explosion due to the gas cloud comes from the released gas during at least 140 seconds by the second sampling sequence.
  • Fig 4 shows the typical arrangement for installation of gas sampling pipeline.
  • gas sampling pipes are installed therein and are connected to a gas detection equipment via tubes.
  • the gas detection equipment is installed in an accommodation zone which is separate from the cargo compressor room as a separately enclosed space, by the distance of about 50-100 m, about 30 to 60 seconds are required for sampled gas to reach the gas detection equipment through the gas sampling pipes.
  • an object of the present invention is to provide a method of detecting leaking gas in a hazardous area of a gas carrier, in which direct sensing type detectors are installed in the enclosed spaces and the hazardous area of a gas carrier so that leaking gas can be detected in real time.
  • Another object of the present invention is to provide a method of detecting leaking gas in a hazardous area of a gas carrier, in which an LOS (line of sight) type infrared gas detector is installed as a direct sensing type detector, so that the leakage of gas can be immediately detected over a wide area.
  • LOS line of sight
  • Another object of the present invention is to provide a method of detecting leaking gas in a hazardous area of a gas carrier, in which at least two direct sensing type detectors are installed in the same area, so that malfunction of the detectors can be monitored.
  • Still another object of the present invention is to provide a method of detecting leaking gas in a hazardous area of a gas carrier, which can immediately detect and forcibly ventilate leaking gas in the enclosed space, such as a cargo compressor room, a valve room and a pump room, of an LNG carrier or onshore or offshore facilities having steam turbines, or medium speed dual-fuel diesel engines, or a re-liquefaction system, or dual-fuel gas turbines, or slow speed dual-fuel diesel engine, etc. installed therein and operating at a high operating pressure.
  • a still further object of the present invention is to provide a method of detecting leaking gas in a hazardous area of a gas carrier, in which at least one exhaust fan is operated at the time of the detection of leaking gas in a enclosed space to forcibly ventilate the enclosed space, so that the dispersion of flammable gas and the possibility of an explosion can be prevented.
  • the leakage of gas can be immediately detected and confirmed over a wide area.
  • a hazardous area and an enclosed space can be immediately and forcibly ventilated.
  • the likelihood of an explosion due to the leakage of flammable gas can be decreased.
  • leaking gas in the case of a enclosed space such as a cargo compressor room, a valve room or a motor room, leaking gas can be immediately detected and confirmed by the direct sensing type gas detector, and by operating two exhaust fans in association with the gas detection system, the enclosed space can be immediately and forcibly ventilated, whereby the possibility of an explosion due to the leakage of flammable gas can be prevented.
  • FIG. 1 is a flow chart illustrating a method of detecting leaking gas in a hazardous area of a gas carrier according to the present invention
  • FIG. 2 is a view illustrating an application example of the present invention
  • FIG. 3 is a view illustrating the installed state of an LOS (line of sight) type gas detector according to the present invention.
  • At least two direct sensing type gas detectors 130, 140 and 150 are installed in a enclosed space, such as a cargo compressor room, a valve room and a pump room, defined to protect and separate apparatuses for handling compressed boil-off gas (BOG) of liquefied natural gas and liquefied petroleum gas generated due to heat transfer from the outside to thereby use the compressed boil-off gas as fuel for a propulsion engine or a power generation apparatus or for re-liquefying the boil-off gas, and in a hazardous area including these provisions, so that the leakage of gas into the hazardous area can be immediately detected.
  • a cargo compressor room such as a cargo compressor room, a valve room and a pump room
  • BOG compressed boil-off gas
  • the method of detecting leaking gas in a hazardous area of a gas carrier includes the steps of sensing amounts of leaking gas using direct sensing type gas detectors (S100), comparing the amounts of leaking gas detected by the gas detectors with an alarm issuance limit, and issuing an alarm and operating a forced exhaust fan when the amount of leaking gas detected by at least one gas detector exceeds the alarm issuance limit (S200), and actuating an emergency stop system when the amounts of leaking gas detected by at least two detectors exceed an emergency stop limit (S300).
  • S100 direct sensing type gas detectors
  • S200 alarm issuance limit
  • S300 emergency stop system
  • the method further includes the step of re-sensing amounts of leaking gas in a hazardous area in which forced ventilation is implemented using the forced exhaust fan, using the gas detectors (S400), and sequentially stopping issuance of the alarm and operation of the forced exhaust fan when the re-detected amounts of leaking gas do not exceed a reference value (S500).
  • the amounts of leaking gas are detected by the gas detectors 130, 140 and 150 which are installed in the hazardous area and an enclosed space 350, such as a cargo compressor room 330, a valve room, a pump room and a motor room 340.
  • the gas detectors 130, 140 and 150 which are installed in the hazardous area and an enclosed space 350, such as a cargo compressor room 330, a valve room, a pump room and a motor room 340.
  • at least two electric gas detectors 140 and 150 having an Ex-D class based on IEC, International Electro-technical Commission) or LOS (line of sight) type detectors 130, which are direct sensing type detectors approved by the IGC Code (International code for the construction and equipment of ships carrying liquefied gases in bulk) and are explosion-proof, are installed.
  • IGC Code International code for the construction and equipment of ships carrying liquefied gases in bulk
  • the LOS (line of sight) type detector 130 comprises a transmission section 110 capable of transmitting an infrared signal and a reception section 100 capable of receiving the infrared signal transmitted from the transmission section 110. If flammable gas reaches an infrared gas sensing line 120 between the transmission section 110 and the reception section 100, a change in the infrared sensitivity of the reception section 100 is detected, and thereby, the leakage of gas is detected.
  • the amounts of leaking gas detected by the gas detectors 130, 140 and 150 are compared with a preset reference value, that is, the alarm issuance limit, set to correspond to about 30% of the lower explosion limit of flammable gas, so as to eliminate the likelihood of an explosion.
  • a preset reference value that is, the alarm issuance limit
  • the alarm issuance limit corresponds to about 30% of the lower explosion limit of the flammable gas
  • the alarm issuance limit corresponds to 1.5 vol% of methane, which is a concentration at which an explosion does not actually occur.
  • methane which is the main constituent of the cargo of an LNG carrier
  • the present invention applies to an LNG carrier operating at a high pressure of 6 barg to 250 barg, if the leakage of gas occurs, the flammable gas can immediately exceed the lower explosion limit and reach a concentration at which an explosion can easily occur.
  • the reference value for the issuance of a warning alarm be set to correspond to about 30% of the lower explosion limit of the leaking gas.
  • the emergency stop limit corresponding to about 60% of the lower explosion limit of the leaking gas, is compared with the amounts of leaking gas.
  • the travel of the ship is stopped. That is to say, when the leaking gas is detected by amounts exceeding about 60% of the lower explosion limit of the flammable gas, the emergency stop system is actuated to stop the travel of the ship so as to prevent the amounts of leaking gas from reaching an explosion threshold.
  • a warning alarm is issued to warn of the corresponding situation, and at the same time, a ventilation system, such as the forced exhaust fan, etc. is operated. Also, when the detected amounts of the leaking gas exceed the emergency stop limit, the emergency stop system is actuated so that the travel of the ship is stopped.
  • the ventilation system such as the forced exhaust fan, etc. is a conventional provision which is installed in the hazardous area and the enclosed space of a gas carrier, the detailed description thereof will be omitted herein.
  • the forced exhaust fan when used as the ventilation system, the forced exhaust fan has capacity sufficient to ventilate a volume corresponding to 30 times the volume of the enclosed space per hour, and is configured such that exhausted gas is not re-introduced into the enclosed space.
  • the capacity of the forced exhaust fan is determined in conformity with the fan capacity prescribed in the IGC Code.
  • At least two electric gas detectors 140 and 150 (having an Ex-D design based on IEC) and at least two LOS (line of sight) type detectors 130, which are direct sensing type detectors and are explosion-proof, are installed together or independently in the same area.
  • a warning alarm is issued depending upon the detected amount of the leaking gas, and only when at least two gas detectors simultaneously detect leaking gas exceeding the emergency stop limit, corresponding to 60% of the lower explosion threshold of the flammable gas, is the emergency stop system actuated.
  • step S400 amounts of leaking gas are re-detected in the hazardous area and the enclosed space in which a warning alarm is issued and the emergency stop system is actuated.
  • the amounts of leaking gas in the hazardous area 320 and the enclosed space 350 in which the ventilation is being conducted through the operation of the ventilation system are rapidly re-detected using at least two direct sensing type gas detectors 130, 140 and 150.
  • the re-detected amounts of leaking gas are compared with the reference value. When the re-detected amounts are less than the reference value, the actuation of the emergency stop system or the issuance of the warning alarm is stopped.
  • the amounts of the leaking gas detected by the gas detectors are transmitted to a control system 400 as electrical signals. Also, these transmitted amounts of the leaking gas are converted through the internal operation of the control system 400 into commands for enabling the issuance of the alarm or the actuation of the emergency stop system.
  • the leaking gas can be detected through the sensing step, the warning alarm issuing step, the emergency stopping step, the gas re-sensing step and the fan stopping step, and by operating the ventilation system, the probability of an explosion can be eliminated.
  • the forced exhaust fan be installed as the ventilation system so that, when gas leakage is detected by the gas detectors, quick ventilation of the leaking gas by the forced fan is implemented, unlike the hazardous area.
  • At least two direct sensing type detectors are installed in the enclosed space of a gas carrier or similar onshore or offshore facilities equipped with a dual-fuel diesel engine, a gas turbine engine, re-liquefaction apparatus, etc., and at least two forced exhaust fans operating in cooperation with the detectors are also installed to implement ventilation.
  • FIG. 5 is a flow chart illustrating a method for independently detecting leaking gas in an enclosed space according to the present invention
  • FIG. 6 is a view illustrating the state in which a gas detector according to the present invention is installed in an enclosed space.
  • At least two electric gas detectors 140 or 150 (having an Ex-D design based on IEC), which are explosion-proof, are installed in an enclosed space.
  • two forced exhaust fans 20 operating in cooperation with the direct sensing type gas detectors 140 or 150 are installed at one side of the enclosed space 350 to communicate with air outlets 40.
  • the method comprises the steps of sensing flammable gas leaking into an enclosed space using gas detectors (S100a), comparing the amounts of flammable gas detected by the gas detectors with a preset reference value (S200a), issuing a warning alarm and simultaneously operating the two forced exhaust fans installed in the enclosed space to forcibly implement ventilation when the detected amount of leaking gas exceeds the reference value (S300a), re-sensing gas in the enclosed space using the gas detectors while forced ventilation is implemented by the two forced exhaust fans (S400a), and stopping the issuance of the alarm and the operation of the forced exhaust fans when the re-detected amounts of leaking gas do not exceed a reference value (S500a), so that the leaking gas in the enclosed space can be immediately detected and the enclosed space can be forcibly ventilated.
  • gas detectors S100a
  • S200a preset reference value
  • S300a the reference value
  • S400a re-sensing gas in the enclosed space using the gas detectors while forced ventilation is implemented by the two forced
  • the amounts of leaking gas are detected using the direct sensing type gas detectors installed in the enclosed space, such as a cargo compressor room, a valve room and a pump room.
  • the direct sensing type gas detectors installed in the enclosed space, such as a cargo compressor room, a valve room and a pump room.
  • at least two gas detectors having an Ex-D design based on IEC which are direct sensing type detectors approved by the IGC Code (International code for the construction and equipment of ships carrying liquefied gases in bulk), are installed.
  • the amounts of leaking gas detected by the gas detectors are compared with the preset reference value.
  • the reference value is preset as an alarm issuance limit in a hazardous area, that is, a limit corresponding to about 30% of the lower explosion limit of flammable gas.
  • the forced insulation step S300a when the amount of leaking gas detected by the gas detectors is the same as or exceeds the preset reference value, apparatuses having increased probability of explosion are urgently stopped. Namely, when the detected amount of leaking gas exceeds the alarm issuance limit, an alarm is issued to warn of the emergency, and at the same time, the two forced exhaust fans installed in the enclosed space are operated. If the two forced exhaust fans are operated, since the enclosed space can be immediately ventilated, the amount of leaking gas in the enclosed space abruptly decreases below the alarm issuance limit. Between the two forced exhaust fans, one forced exhaust fan is always operated, and when the detected amount of the leaking gas exceeds the preset reference value, the remaining forced exhaust fan is forcibly operated to immediately ventilate the enclosed space.
  • the forced exhaust fan has a capacity to ventilate a volume corresponding to 30 times the volume of the enclosed space per hour, and is configured such that exhausted gas is not re-introduced into the enclosed space.
  • the capacity of the forced exhaust fan is determined in conformity with the fan capacity prescribed in the IGC Code.
  • a separate exhaust fan may be installed as an auxiliary fan.
  • the amounts of leaking gas in the enclosed space 350 are re-detected while forced ventilation is implemented. That is to say, the amounts of leaking gas are immediately re-detected by the direct sensing type gas detectors in the enclosed space for which the ventilation is being implemented by the simultaneous operation of the two forced exhaust fans.
  • the re-detected amounts of leaking gas are compared with a reference value.
  • the operation of the forced exhaust fans is stopped.
  • the direct sensing type gas detectors and the two forced exhaust fans be operated in cooperation with each other to sense the leaking gas before the amounts of leaking gas in the enclosed space reach the emergency stop limit and to forcibly ventilate the leaking gas to thereby eliminate the possibility of an explosion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Examining Or Testing Airtightness (AREA)

Claims (15)

  1. Dispositif pour détecter en temps réel des gaz inflammables qui fuient dans une zone dangereuse (320) comprenant un espace fermé séparé dans (350) d'un système de stockage de gaz ayant une zone de sécurité (300) séparée par une cloison (310) de la zone dangereuse (320), ledit système de stockage de gaz utilisant un gaz d'évaporation généré par des sources de chaleur atmosphériques et ayant un équipement auxiliaire installé dans l'espace fermé séparé de sorte que le gaz d'évaporation soit comprimé pour être utilisé comme combustible ou pour être reliquéfié de nouveau pour être stocké comme cargaison,
    ledit dispositif comprenant :
    - au moins deux détecteurs de gaz à détection directe (130, 140, 150) installés dans la zone dangereuse (320) du système de stockage de gaz, et configurés pour mesurer la concentration de gaz inflammable libéré, et
    - un système de détection et de commande de gaz (400) installé dans la zone de sécurité (300) du système de stockage de gaz, et configuré pour comparer la concentration de gaz inflammable détectée par les détecteurs de gaz (130, 140, 150) avec une limite d'émission d'alarme, pour émettre une alarme et pour faire fonctionner un ventilateur d'évacuation (20, 40) si la concentration de gaz inflammable détectée par au moins un détecteur de gaz dépasse la limite d'émission d'alarme; et pour actionner un système d'arrêt d'urgence lorsque les concentrations de gaz inflammable détectées par au moins deux détecteurs dépassent une limite d'arrêt d'urgence.
  2. Dispositif selon la revendication 1, dans lequel les détecteurs de gaz (130, 140, 150) comprennent des détecteurs de gaz électriques ou des détecteurs de gaz infrarouges de type LOS (ligne de mire), à détection directe et antidéflagrants (classe Ex-D).
  3. Dispositif selon la revendication 2, dans lequel chacun des détecteurs de gaz de type LOS comprend une section de transmission (110) capable de transmettre des signaux infrarouges et une section de réception (100) capable de recevoir les signaux infrarouges transmis depuis la section de transmission (110) de sorte que, lorsque le gaz inflammable atteint une zone (120) entre la section de transmission (110) et la section de réception (100), un changement de sensibilité infrarouge de la section de réception est détecté, et ainsi une fuite de gaz est détectée.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, dans lequel le système de stockage de gaz est un transporteur, une installation terrestre ou en mer.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, dans lequel l'équipement auxiliaire est un compresseur de cargaison ou un système de re-liquéfaction.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, dans lequel l'espace fermé est une salle de compresseur de chargement, une salle des vannes, une salle des machines ou une salle des pompes.
  7. Dispositif selon la revendication 4, dans lequel le transporteur est un méthanier équipé de moteurs diesel bicarburant à vitesse moyenne, ou d'un système de re-liquéfaction, ou de turbines à gaz bicarburant, ou de moteurs diesel bicarburant à vitesse lente, dans lequel le gaz d'évaporation est comprimé jusqu'à 6 Bar gauge, 8 Bar gauge, 40 Bar gauge et 250 Bar gauge respectivement.
  8. Dispositif selon la revendication 7, comprenant en outre au moins un ventilateur d'évacuation (20) installé dans l'espace fermé pour ventiler à force l'espace fermé, pour empêcher la dispersion de gaz inflammable et la possibilité d'une explosion.
  9. Dispositif selon la revendication 7, dans lequel au moins deux détecteurs de gaz du type à détection directe sont installés dans l'espace fermé et au moins deux ventilateurs d'extraction forcée (20) fonctionnant en coopération avec les détecteurs de gaz installés pour réaliser la ventilation.
  10. Procédé de détection de fuites de gaz dans une zone dangereuse d'un transporteur de gaz en utilisant le dispositif selon l'une quelconque des revendications 1 à 9,
    dans lequel le procédé comprend les étapes consistant à :
    - mesurer (S100) la concentration de gaz inflammable libéré en utilisant des détecteurs de gaz à détection directe ;
    - comparer (S200) la concentration de gaz inflammable détectée par les détecteurs de gaz avec une limite d'émission d'alarme et émettre une alarme et actionner un ventilateur d'évacuation si la concentration de gaz inflammable détectée par au moins un détecteur de gaz dépasse la limite d'émission d'alarme; et
    - actionner (S300) un système d'arrêt d'urgence lorsque les concentrations de gaz inflammables détectées par au moins deux détecteurs dépassent une limite d'arrêt d'urgence.
  11. Procédé selon la revendication 10, comprenant en outre les étapes consistant à: mesurer de nouveau (S400) la concentration du gaz inflammable dans une zone dangereuse où une ventilation forcée est mise en oeuvre par le ventilateur d'évacuation, en utilisant les détecteurs de gaz ; et arrêter séquentiellement (S500) l'émission de l'alarme et le fonctionnement des ventilateurs d'extraction dans le cas où les concentrations mesurées de nouveau du gaz inflammable ne dépassent pas une limite à émettre.
  12. Procédé selon la revendication 10, comprenant les étapes consistant à: détecter (S100a) un gaz inflammable libéré dans un espace fermé en utilisant des détecteurs de gaz; comparer (S200a) les concentrations de gaz inflammable détectées par les détecteurs de gaz avec une valeur de référence prédéfinie; émettre (S300A) une alarme d'avertissement et actionner simultanément deux ventilateurs d'évacuation installés dans un espace fermé pour mettre en oeuvre de façon forcée la ventilation lorsque la concentration mesurée de gaz inflammable libéré dépasse la valeur de référence prédéfinie ; mesurer de nouveau (S400a) le gaz dans l'espace fermé en utilisant les détecteurs de gaz tandis que la ventilation forcée est mise en oeuvre en utilisant les deux ventilateurs d'évacuation forcée ; et arrêter (S500a) l'émission de l'alarme et le fonctionnement des deux ventilateurs d'extraction lorsque les concentrations mesurées de nouveau de gaz inflammable ne dépassent pas une valeur de référence.
  13. Procédé selon l'une quelconque des revendications 10 à 12, dans lequel la limite d'émission d'alarme est fixée pour correspondre à environ 30% de la limite inférieure d'explosion de gaz qui fuit.
  14. Procédé selon l'une quelconque des revendications 10 à 13, dans lequel la limite d'arrêt d'urgence correspond à environ 60% de la limite d'explosion inférieure du gaz qui fuit.
  15. Procédé selon l'une quelconque des revendications 10 à 14, dans lequel la limite d'émission d'alarme correspond à 1,5% en volume de méthane.
EP08723280.7A 2007-03-09 2008-03-05 Méthode de détection de gaz autour de systèmes de stockage de gaz Active EP2135228B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020070023440A KR100787777B1 (ko) 2007-03-09 2007-03-09 보일오프가스 활용설비의 밀폐공간내 누출가스 감지 및환기 방법
KR1020080019496A KR100935527B1 (ko) 2008-03-03 2008-03-03 가스운반선의 가스위험지역내 누출가스 감지방법
PCT/KR2008/001243 WO2008111755A1 (fr) 2007-03-09 2008-03-05 Méthode de détection de gaz autour de systèmes de stockage de gaz

Publications (3)

Publication Number Publication Date
EP2135228A1 EP2135228A1 (fr) 2009-12-23
EP2135228A4 EP2135228A4 (fr) 2012-08-22
EP2135228B1 true EP2135228B1 (fr) 2018-07-04

Family

ID=39759667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08723280.7A Active EP2135228B1 (fr) 2007-03-09 2008-03-05 Méthode de détection de gaz autour de systèmes de stockage de gaz

Country Status (3)

Country Link
EP (1) EP2135228B1 (fr)
JP (1) JP5114505B2 (fr)
WO (1) WO2008111755A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9000910B2 (en) * 2010-06-25 2015-04-07 Industrial Scientific Corporation Multi-sense environmental monitoring device and method
FI124835B (fi) 2012-07-03 2015-02-13 Lngtainer Ltd Säiliö
JP2015155787A (ja) * 2014-02-20 2015-08-27 潮冷熱株式会社 Ｌｎｇの冷熱を用いた船舶の空気調和機の冷媒循環装置
DE102014109539A1 (de) * 2014-07-08 2016-01-14 Basf Se System und Verfahren zum Betreiben eines Flüssiggasverdampfers
US20160101842A1 (en) * 2014-10-08 2016-04-14 Avista Corporation Fuel transfer and storage systems and methods
WO2017184702A1 (fr) 2016-04-19 2017-10-26 Industrial Scientific Corporation Système de sécurité de travailleur
US10533965B2 (en) 2016-04-19 2020-01-14 Industrial Scientific Corporation Combustible gas sensing element with cantilever support
JP6655198B2 (ja) * 2016-05-10 2020-02-26 バーゼル・ポリオレフィン・ゲーエムベーハー エチレン系不飽和単量体の高圧重合方法
US10358510B2 (en) * 2016-05-10 2019-07-23 Basell Polyolefine Gmbh High-pressure polymerization process of ethylenically unsaturated monomers in a production line having flanges covered by a chimney construction
CN109071689B (zh) * 2016-05-10 2020-01-14 巴塞尔聚烯烃股份有限公司 在安装于保护外壳内的聚合反应器中进行的烯键式不饱和单体的高压聚合方法
CN109345785A (zh) * 2018-12-03 2019-02-15 浙江国视科技有限公司 一种燃气泄漏预警及自主处置系统及方法
US11246187B2 (en) 2019-05-30 2022-02-08 Industrial Scientific Corporation Worker safety system with scan mode
CN111366684B (zh) * 2020-01-19 2023-07-18 上海兆莹自控设备有限公司 一种用于防范气体泄漏危险的气体检测系统及感测方法
CN113053069B (zh) * 2021-03-24 2024-06-18 中国成达工程有限公司 一种天然气阀门组智能模块箱
CN114348228B (zh) * 2022-01-20 2022-10-21 江南造船(集团)有限责任公司 一种船用隔离舱通风系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030010918A1 (en) * 2000-02-24 2003-01-16 Kiyoshi Komiyama Method and apparatus for leak detecting, and apparatus for semiconductor manufacture

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134695A (en) * 1975-05-16 1976-11-22 Omron Tateisi Electronics Co Explosion monitor system
IT1087543B (it) * 1977-09-26 1985-06-04 Gandolfi Maria L Apaprecchio di sicurezza contro le fughe di gas in un impianto di alimentazione di gas combustibile
US4369647A (en) * 1980-03-21 1983-01-25 New Cosmos Electric Company Limited Gas leakage detector
JPS56157659U (fr) * 1980-04-22 1981-11-25
JP2000240895A (ja) * 1999-02-24 2000-09-08 Osaka Gas Co Ltd 液化ガス貯槽のボイルオフガス処理方法および液化ガス貯蔵装置
KR20010094603A (ko) * 2000-03-31 2001-11-01 김종호 가스누설 감시 제어 시스템 및 그 방법
JP2003106498A (ja) * 2001-09-28 2003-04-09 Toho Gas Co Ltd Ｌｎｇタンクｂｏｇ再液化回収システム
JP2003149071A (ja) * 2001-11-14 2003-05-21 Toyota Motor Corp 移動体における有害ガス漏れ検出装置
DE10237834A1 (de) * 2002-08-19 2004-03-04 Robert Bosch Gmbh Sicherheitssystem für eine Einrichtung zur Energieerzeugung
US7091848B2 (en) * 2003-03-13 2006-08-15 Alford Safety Services, Inc. Enclosure system for hot work within the vicinity of flammable or combustible material
KR20060034906A (ko) * 2004-10-20 2006-04-26 이기원 가스누출 경보 차단장치
US7213444B2 (en) * 2005-05-16 2007-05-08 Carthago International Solutions, Inc. Optoacoustic gas sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030010918A1 (en) * 2000-02-24 2003-01-16 Kiyoshi Komiyama Method and apparatus for leak detecting, and apparatus for semiconductor manufacture

Also Published As

Publication number Publication date
JP2010534795A (ja) 2010-11-11
WO2008111755A1 (fr) 2008-09-18
JP5114505B2 (ja) 2013-01-09
EP2135228A1 (fr) 2009-12-23
EP2135228A4 (fr) 2012-08-22

Similar Documents

Publication Publication Date Title
EP2135228B1 (fr) Méthode de détection de gaz autour de systèmes de stockage de gaz
CN101622651A (zh) 在气体存储系统周围的气体泄漏危险区内检测气体的方法
US7930928B2 (en) Method for detecting overpressure inside a compartment associated with a gas turbine nacelle
US10345190B2 (en) Method for detecting a fluid leak in a turbomachine and fluid distribution system
EP3938697A1 (fr) <smallcaps/>? ? ? ? ? ? ? ?agencement de réservoir de carburant dans un véhicule marin et procédé dedétente d'hydrogène à partir d'un agencement de réservoir de carburant à hydrogène liquide
US20220177295A1 (en) Vapor displacement refueling including refueling in zero gravity
US11846568B2 (en) Leak detection for pressurized fluid systems
KR101207044B1 (ko) 이중선체 운반선의 발라스트 탱크내부 가스감지방법
CN113357549B (zh) 一种机舱内双壁管泄漏检测方法
US5601108A (en) Gas line safety evacuation apparatus and method
CN117405578A (zh) 气体渗透率的测量系统
US20230160773A1 (en) Arrangement and method for detecting a hydrogen leak in a hydrogen supply system
KR100935527B1 (ko) 가스운반선의 가스위험지역내 누출가스 감지방법
Santon Explosion hazards at gas turbine driven power plants
WO2022061285A1 (fr) Procédé et appareil pour exporter un fluide sans déchargement
US20240001169A1 (en) Method and system of air parameter based automatic purging of breathable air within a firefighter air replenishment system
CN115452268A (zh) 一种lng船可燃气体探测系统隔离阀箱及其气密性检测方法
US20220397478A1 (en) Leak detection for pressurized fluid systems
US20230313659A1 (en) Natural gas system for on-site processing
Grillo et al. Aspects of reliability design of hydrocarbon offshore platforms
US7570173B2 (en) Device to dissipate gases created in the event of a quench of a superconducting magnet
Kim et al. A Risk-Based Fire Protection Design of a LNG Fueled Ship
Burgbacher et al. Safety Analysis of a Liquid Hatural Gas Plant
NO20220599A1 (en) Remote start-up of an unmanned platform
CN118502316A (zh) 一种船舶的燃气准备间的控制方法和系统

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091009

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20120723

RIC1 Information provided on ipc code assigned before grant

Ipc: F25J 1/00 20060101ALI20120717BHEP

Ipc: G08B 29/16 20060101ALI20120717BHEP

Ipc: G08B 21/16 20060101AFI20120717BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602008055832

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: G08B0021160000

Ipc: F17C0001000000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: G08B 21/16 20060101ALI20180131BHEP

Ipc: F17C 1/00 20060101AFI20180131BHEP

Ipc: G08B 29/16 20060101ALI20180131BHEP

INTG Intention to grant announced

Effective date: 20180220

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HA, JONG-PIL

Inventor name: MOON, KI-HO

Inventor name: SONG, SEOK-LYONG

Inventor name: JEONG, SAM-HEON

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1014898

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008055832

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180704

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1014898

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181104

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181004

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181005

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181004

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008055832

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

26N No opposition filed

Effective date: 20190405

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602008055832

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190305

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191001

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190305

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190305

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190305

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20080305

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240226

Year of fee payment: 17