DNV-水产养殖业中的障碍管理BARRIER MANAGEMENT IN THE AQUACULTURE INDUSTRY 2021.ppt
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1、BARRIER MANAGEMENTIN THE AQUACULTURE INDUSTRYGUIDELINEGUIDELINE Barrier management in the aquaculture industrySustainable operations require good risk management,which inturn contributes to greater operational success.The objective ofthis guideline is to provide the industry with the basic buildingb
2、locks for introducing barrier management as a tool to reducerisk for fish escape and fish health.IntroductionThe aquaculture industry has ambitionsto expand,but sustainable growth isthreatened by challenges such as fishescape,sea lice and fish health.Newconcepts for offshore and onshorefacilities ar
3、e being developed to increaseproduction and reduce some of thesechallenges.However,irrespective of thetype of facility and technical solutionchosen,the industry will always beexposed to the risk of losses,in the formof fish escaping or dying.The Norwegian Ministry of Trade,Industry and Fisheries str
4、ategyfor preventing and reducing the impact of fish escape specifiesthat both the industrys fundamental understanding of risk andthe way in which the industry handles risk must change.One ofthe Ministrys focus areas is the creation of more effective safetyregulations,which include barrier management
5、.This means asystem that set requirements to the barriers and relevant and1effective processes that identify,and compensate for,weaknessesin the barriers.Systematic barrier management may contribute toRisk reduction through control of the barriersAchieving targets through better control of unwanted
6、eventsthat lead to lossesSimplified interaction between the authorities and the industryThe enabling of a more risk-based auditing regimeThis guideline is based on normal operation of an aquaculturefacility in the sea phase but can also be used for different types offacilities throughout the entire
7、value chain.The guideline is based on work carried out by DNV Group Researchand Development as well as input from industry players and theNorwegian authorities.The guideline has references to Norwegianlegislation.3GUIDELINE Barrier management in the aquaculture industryContentsIntroduction36Barrier
8、management,what is it?How barrier management is compatible with prevailing regulationsHow to ensure systematic and effective barrier managementDefine and establish barriers1012142125262932Monitor and assess how well the barriers workEnsure the barriers performance and mitigate weaknessesHow to succe
9、ed in barrier managementAnnexDefinitions5GUIDELINE Barrier management in the aquaculture industryBarrier management,what is it?Operational activity atthe facility:Managing risk is a key issue for allcompanies.While we know unwantedevents will occur,we do not know when,or the extent of the consequenc
10、es.Havingsystematic processes in place to identify,analyse and handle the companys risks isnot only a requirement,but also a necessity,for sustainable and profitable operations.t Technical conditiont Operational executiont Activity levelDesign and construction:t Design loadst Operational assumptions
11、t Safety systemt Robustness of the designFigure 1.Example of factors which influence the risk level for fish escape and fish health.6GUIDELINE Barrier management in the aquaculture industryOperation of an aquaculture facility involves the risk of eventswhich may lead to fish escaping or dying.Barrie
12、rs are introducedto avoid or minimize the risk of such events.The risk exposure depends on the facility beingoperated in accordance with the assumptions andrestrictions resulting from these factors,such as thedesign loads for the net pen and floating collar.Thisrisk will not be greatly affected by t
13、he activity at thefacility.Barriers are measures needed to identify and prevent theoccurrence of unwanted events and to reduce the consequencesof an event if it occurs.The activity at the facility contributes to a more variablerisk exposure compared to the risk from the designand construction.This r
14、isk is affected by,for example,the level of activity,wear and tear and age of thefacility,simultaneous operations,physical strains asa result of operations and the external environment,the involvement of external resources,experienceand knowledge.The combination of these elementscreates a complexity
15、 that makes it difficult to obtain anoverview of how individual risk factors contribute to theoverall risk exposure and makes it difficult to managethe risk.Barrier management is managing risk by controlling the barriersneeded for handle the risks one is exposed to.Threats or hazards that may lead t
16、o fish dying or escaping oftencomprise a complex sequence of events,which arise as a resultof the failure of several barriers at the same time.This is oftendue to a combination of underlying factors and active triggeringmechanisms.An overall understanding of the barriers required,how they should fun
17、ction,and what is required in order for them tobe effective,is essential in improving control and getting a betteroverview of the potential risks.The risk of fish escaping and risk to fish health are governed by twomain elements (i)the risk resulting from the facilitys design andconstruction,and(ii)
18、the risk resulting from the activity at the facilityand external factors,as illustrated in Figure 1.Having an overview of the risk through control of thebarriers requires a systematic and continuous process,which includes monitoring the barriers condition.If abarriers performance is weakened,this wi
19、ll be easier toidentify,and implement good mitigating measures tocompensate for the increased risk.The facilitys design and construction must take into account theconditions at the site,and these will in turn affect the functionaland strength requirements for the equipment and componentsthat are to
20、be used.7Probabilityreducing barriersConsequencereducing barriersThreat 1Threat 2Threat 3Consequence 1Consequence 2Consequence 3Consequence 4UnwantedeventThreat 4Figure 2.Bowtie diagramGUIDELINE Barrier management in the aquaculture industryWith land-based aquaculture facilities and aquaculture oper
21、ationsoffshore and in exposed areas,the facilities and systems become morecomplex.This requires a better understanding of the risks,the courseof events leading up to an unwanted event,and the barriers required.Barrier management is a good tool for ensuring that correct andsufficient barriers are inc
22、luded in the design and construction ofthe facility.Barrier management contributes to a more holistic and dynamic riskmanagement across authorities areas of responsibilities and,throughthis,simplify and improves efficiency.Barrier management simplifies the communication of risk andcontributes to inc
23、reased awareness and knowledge of the elementsthat affect the risk.The bowtie diagram illustrated in Figure 2 visualizesthe link between threats,consequences,unwanted events andassociated barriers.The unwanted event is at the centre of the bowtiediagram,with consequences or losses on the right and t
24、hreats thatcan lead to an unwanted event on the left.The barriers that reduce theprobability and consequences of the event are also shown.The status of the barriers condition,often visualized in a bowtiediagram,will provide important information on the status of thecompanys risk exposure and will gi
25、ve a better basis for risk-baseddecisions,plans and operations.9How barrier managementis compatible withprevailing regulationsBarrier management is a method thatwill contribute to fulfil the intentions andrequirements for managing risk as specified inthe industrys prevailing regulations.However,by u
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