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Case analysis of a liquefied gas cylinder blasting accident

Case analysis of a liquefied gas cylinder blasting accident

(Summary description)statementofproblem   AYSP-15civilpetroleumliquefiedgascylinderwasonly3yearsand2monthsaftertheappearance.Therewasnoabnormalityinappearance.Thepaintcolorwasstillrelativelynew.AftertheSpringFestival,theairwasnotused.Itwasplacedinthestorageroomfor4monthsandsuddenlyexploded.Abang,afire,rushedoutofthewindowofthecylinderstorageroom,aseaof​​fireintherangeof10×16meters,theflameisashighas2-3buildings. ThehousewifeXieX×,caughtintheseaof​​fire,severeburns,multiplerescues,treatmentandinvaliddeath. Aliving,kind,innocentyoungmotherleftthechildwithhate,agoodend,happiness,happyandenviablefamilyinstantlydestroyed. Allthepeoplearoundusaresaddenedbythefactthatherdeathistoomuch,anditistoounexpected!Inordertopreventsimilaraccidentsfromhappeningagainandtoensuresafety,scientificanalysisandfairconclusionsshouldbemadeinresponsetothecauseoftheaccident. (RiskManagementWorldNetwork-SecurityOfficer'sHome)   CivilpetroleumliquefiedgascylindersarethemostnumerousandwidelydistributedgascylindersinChina,andthemostcommonoccurrencesoffiresandexplosions.Suchaccidentsdirectlyendangerthesafetyofpeople'slivesandproperty. Theauthorisdirectlyresponsiblefortheinvestigation,analysisandtreatmentofthistypicaloilliquefiedgascylinderexplosiondeath.Thistechnicalanalysisrevealsthekeylinksthatarepronetoaccidents,providingsafetymonitoring,inspection,manufacturing,filling,use,design,Standardsandotherpersonnelreference,inordertoplaytheroleofthrowingbricks,pleaseadvise.   Technicalanalysisoftheaccident   First,blastingcylindermeasurementtesttechnicaldata:   YSP-15type(factorynumber20881)   MaximumworkingpressureP=1.6MpaHydraulicpressuretestpressurePT=2.4Mpa   WorkingtemperatureC≤60°CTheoriginalvolumeofthecylinderV1=35.5liters   Aftertheexplosionofthecylinder,thevolumeV2=37.85litersoftheoriginaldiameterofthecylinderDO=320mm   Bodymaterial15MnHp   Retestchemicalcomposition:   C=0.14%Si=0.07%Mn=0.88%S=0.0084%P=0.011%   Basematerialmechanicalproperties:   b=462MpaIFnormalizingT=800-820°C,t=50-55seconds   Metallographicanalysisofmaterials   Noflakycarbideswerefoundinthenormalizedstructure,andtherewerereticulated,semi-reticulatedcarbides. Thereareextralongimpuritiesinthemainmaterial.   Re-measurementofthehardnessofthecylinder   Fromtheupperheadthinningzonetothelowerheadthinningzone,thethicknessismeasuredat6pointseach,andtheHSsituationisasfollows:   44,22,23,22.5,22,43.7   43,22.7,19,21,21,45.5   Cylinderblastingandgeometricsizeandshape:length320×width62.7mm,fishbelly,nodebris.   Brokensectionshape:   ThecenteroftheblastingcenterisS=85mmfromthecenterlineofthemiddleweld,andtheminimumwallthicknessisSb=2.12mm   Second,thetechnicalanalysisofthecauseoftheaccident   Afterrepeatedinvestigations,research,analysis,andthemaincausesofaccidents,thedesign,storage,transportation,sales,use,andtransformationofthegascylinderswereexcludedfromthetechnicalpointofview.Thefollowingfocusesontheanalysisofmanufacturingandfilling.   Aftertheaccident,wewenttothefillingunittoinvestigateandanalyze.Althoughtherewasnopre-inflationinspectionandnore-inspectionoftheexplosionofthegascylinder,thereweremanyaccidentsatthefillingsite,butYakoudeniedtheresponsibilityforfilling,sothatthebottlecouldnotbeconfirmed.Thestationwasoverfilledandrejectedcategorically. Tothegascylindermanufacturer,Ialsorefusedtorecognizeanyresponsibility.Itemphasizedthatthegascylinderoftheplantisahigh-qualityproduct.Itissupervisedbythesafetysupervisionagencyandsupervisedbytheinspectionunit.Thenationalgascylinderexpertisthetechnicalconsultantoftheplantandmeetsthenationalstandards.anyproblem. Bothfillingandmanufacturingemphasizethatthecauseoftheaccidentisotherlinks,andwedonotprovidepositiveanswerstoourtechnicalanalysis. Aftermanynegotiations,andaskedtheauthoritytoissueare-examinationreport,pleasesupportthescientificresearchunit,andfinallyacceptedourtechnicalanalysis.   1.Analysisofmanufacturingdefects:   (1)Analysisoftheshapeandbreaksectionofthebottlebody   Thisisablastingaccidentmainlybasedonductileblasting.Therearematerialdefectsinthesourcearea,metalfiberswithductilefracture,brittlefracturecrystalparticles,radiationzone,partialbreakandshearlip,andwholecylinderblasting.Therearshapeisveryuneven,anditisinvertedpearshape,andtheupperpartofthemiddleringismoredeformedthanthelowerpart. Thehardnessisalsoveryuneven,themiddleofthecylinderisthelowest,thelowerhardnessisthehighest,andthelocalhardpart>45°SHreflectsthepoorqualityofthecylinderandimproperheattreatment.   (2)Analysisofbearingstressofcylinder   1MaximumworkingpressurePh=1.6Mpa   2DesignedhydraulicpressuretestpressurePt=2.4Mpa   3Actualpressurewhenthecylinderisblasted   Pb=0.95×   Where:Sb-theminimumwallthicknessoftheblastopeningmm   Σb——thetensilestrengthofthematerialMpaDO——outerdiametermm   4Thepressureofthisbatchofcylindersduringthefactorybursttest:   YieldpressurePS=7.2Mpa,burstpressurePb=10.2Mpa   5Summary:A.Thepressureofthecylinderwhentheexplosionis5.82Mpaislessthantheyieldpressureofthebatchof7.2Mpaoftheblastingtestbeforeleavingthefactory,andislessthantheblastingtestpressureof10.2Mpa

Case analysis of a liquefied gas cylinder blasting accident

(Summary description)statementofproblem   AYSP-15civilpetroleumliquefiedgascylinderwasonly3yearsand2monthsaftertheappearance.Therewasnoabnormalityinappearance.Thepaintcolorwasstillrelativelynew.AftertheSpringFestival,theairwasnotused.Itwasplacedinthestorageroomfor4monthsandsuddenlyexploded.Abang,afire,rushedoutofthewindowofthecylinderstorageroom,aseaof​​fireintherangeof10×16meters,theflameisashighas2-3buildings. ThehousewifeXieX×,caughtintheseaof​​fire,severeburns,multiplerescues,treatmentandinvaliddeath. Aliving,kind,innocentyoungmotherleftthechildwithhate,agoodend,happiness,happyandenviablefamilyinstantlydestroyed. Allthepeoplearoundusaresaddenedbythefactthatherdeathistoomuch,anditistoounexpected!Inordertopreventsimilaraccidentsfromhappeningagainandtoensuresafety,scientificanalysisandfairconclusionsshouldbemadeinresponsetothecauseoftheaccident. (RiskManagementWorldNetwork-SecurityOfficer'sHome)   CivilpetroleumliquefiedgascylindersarethemostnumerousandwidelydistributedgascylindersinChina,andthemostcommonoccurrencesoffiresandexplosions.Suchaccidentsdirectlyendangerthesafetyofpeople'slivesandproperty. Theauthorisdirectlyresponsiblefortheinvestigation,analysisandtreatmentofthistypicaloilliquefiedgascylinderexplosiondeath.Thistechnicalanalysisrevealsthekeylinksthatarepronetoaccidents,providingsafetymonitoring,inspection,manufacturing,filling,use,design,Standardsandotherpersonnelreference,inordertoplaytheroleofthrowingbricks,pleaseadvise.   Technicalanalysisoftheaccident   First,blastingcylindermeasurementtesttechnicaldata:   YSP-15type(factorynumber20881)   MaximumworkingpressureP=1.6MpaHydraulicpressuretestpressurePT=2.4Mpa   WorkingtemperatureC≤60°CTheoriginalvolumeofthecylinderV1=35.5liters   Aftertheexplosionofthecylinder,thevolumeV2=37.85litersoftheoriginaldiameterofthecylinderDO=320mm   Bodymaterial15MnHp   Retestchemicalcomposition:   C=0.14%Si=0.07%Mn=0.88%S=0.0084%P=0.011%   Basematerialmechanicalproperties:   b=462MpaIFnormalizingT=800-820°C,t=50-55seconds   Metallographicanalysisofmaterials   Noflakycarbideswerefoundinthenormalizedstructure,andtherewerereticulated,semi-reticulatedcarbides. Thereareextralongimpuritiesinthemainmaterial.   Re-measurementofthehardnessofthecylinder   Fromtheupperheadthinningzonetothelowerheadthinningzone,thethicknessismeasuredat6pointseach,andtheHSsituationisasfollows:   44,22,23,22.5,22,43.7   43,22.7,19,21,21,45.5   Cylinderblastingandgeometricsizeandshape:length320×width62.7mm,fishbelly,nodebris.   Brokensectionshape:   ThecenteroftheblastingcenterisS=85mmfromthecenterlineofthemiddleweld,andtheminimumwallthicknessisSb=2.12mm   Second,thetechnicalanalysisofthecauseoftheaccident   Afterrepeatedinvestigations,research,analysis,andthemaincausesofaccidents,thedesign,storage,transportation,sales,use,andtransformationofthegascylinderswereexcludedfromthetechnicalpointofview.Thefollowingfocusesontheanalysisofmanufacturingandfilling.   Aftertheaccident,wewenttothefillingunittoinvestigateandanalyze.Althoughtherewasnopre-inflationinspectionandnore-inspectionoftheexplosionofthegascylinder,thereweremanyaccidentsatthefillingsite,butYakoudeniedtheresponsibilityforfilling,sothatthebottlecouldnotbeconfirmed.Thestationwasoverfilledandrejectedcategorically. Tothegascylindermanufacturer,Ialsorefusedtorecognizeanyresponsibility.Itemphasizedthatthegascylinderoftheplantisahigh-qualityproduct.Itissupervisedbythesafetysupervisionagencyandsupervisedbytheinspectionunit.Thenationalgascylinderexpertisthetechnicalconsultantoftheplantandmeetsthenationalstandards.anyproblem. Bothfillingandmanufacturingemphasizethatthecauseoftheaccidentisotherlinks,andwedonotprovidepositiveanswerstoourtechnicalanalysis. Aftermanynegotiations,andaskedtheauthoritytoissueare-examinationreport,pleasesupportthescientificresearchunit,andfinallyacceptedourtechnicalanalysis.   1.Analysisofmanufacturingdefects:   (1)Analysisoftheshapeandbreaksectionofthebottlebody   Thisisablastingaccidentmainlybasedonductileblasting.Therearematerialdefectsinthesourcearea,metalfiberswithductilefracture,brittlefracturecrystalparticles,radiationzone,partialbreakandshearlip,andwholecylinderblasting.Therearshapeisveryuneven,anditisinvertedpearshape,andtheupperpartofthemiddleringismoredeformedthanthelowerpart. Thehardnessisalsoveryuneven,themiddleofthecylinderisthelowest,thelowerhardnessisthehighest,andthelocalhardpart>45°SHreflectsthepoorqualityofthecylinderandimproperheattreatment.   (2)Analysisofbearingstressofcylinder   1MaximumworkingpressurePh=1.6Mpa   2DesignedhydraulicpressuretestpressurePt=2.4Mpa   3Actualpressurewhenthecylinderisblasted   Pb=0.95×   Where:Sb-theminimumwallthicknessoftheblastopeningmm   Σb——thetensilestrengthofthematerialMpaDO——outerdiametermm   4Thepressureofthisbatchofcylindersduringthefactorybursttest:   YieldpressurePS=7.2Mpa,burstpressurePb=10.2Mpa   5Summary:A.Thepressureofthecylinderwhentheexplosionis5.82Mpaislessthantheyieldpressureofthebatchof7.2Mpaoftheblastingtestbeforeleavingthefactory,andislessthantheblastingtestpressureof10.2Mpa

Information

statement of problem

 

  A YSP-15 civil petroleum liquefied gas cylinder was only 3 years and 2 months after the appearance. There was no abnormality in appearance. The paint color was still relatively new. After the Spring Festival, the air was not used. It was placed in the storage room for 4 months and suddenly exploded. A bang, a fire, rushed out of the window of the cylinder storage room, a sea of ​​fire in the range of 10 × 16 meters, the flame is as high as 2-3 buildings. The housewife Xie X ×, caught in the sea of ​​fire, severe burns, multiple rescues, treatment and invalid death. A living, kind, innocent young mother left the child with hate, a good end, happiness, happy and enviable family instantly destroyed. All the people around us are saddened by the fact that her death is too much, and it is too unexpected! In order to prevent similar accidents from happening again and to ensure safety, scientific analysis and fair conclusions should be made in response to the cause of the accident. (Risk Management World Network - Security Officer's Home)

 

  Civil petroleum liquefied gas cylinders are the most numerous and widely distributed gas cylinders in China, and the most common occurrences of fires and explosions. Such accidents directly endanger the safety of people's lives and property. The author is directly responsible for the investigation, analysis and treatment of this typical oil liquefied gas cylinder explosion death. This technical analysis reveals the key links that are prone to accidents, providing safety monitoring, inspection, manufacturing, filling, use, design, Standards and other personnel reference, in order to play the role of throwing bricks, please advise.

 

  Technical analysis of the accident

 

  First, blasting cylinder measurement test technical data:

 

  YSP-15 type (factory number 20881)

 

  Maximum working pressure P=1.6Mpa Hydraulic pressure test pressure PT=2.4Mpa

 

  Working temperature C≤60°C The original volume of the cylinder V1=35.5 liters

 

  After the explosion of the cylinder, the volume V2=37.85 liters of the original diameter of the cylinder DO=320mm

 

  Body material 15MnHp

 

  Retest chemical composition:

 

  C=0.14% Si=0.07% Mn=0.88% S=0.0084% P=0.011%

 

  Base material mechanical properties:

 

  b=462Mpa IF normalizing T=800-820°C, t=50-55 seconds

 

  Metallographic analysis of materials

 

  No flaky carbides were found in the normalized structure, and there were reticulated, semi-reticulated carbides. There are extra long impurities in the main material.

 

  Re-measurement of the hardness of the cylinder

 

  From the upper head thinning zone to the lower head thinning zone, the thickness is measured at 6 points each, and the HS situation is as follows:

 

  44, 22, 23, 22.5, 22, 43.7

 

  43, 22.7, 19, 21, 21, 45.5

 

  Cylinder blasting and geometric size and shape: length 320 × width 62.7mm, fish belly, no debris.

 

  Broken section shape:

 

  The center of the blasting center is S=85mm from the center line of the middle weld, and the minimum wall thickness is Sb=2.12mm

 

  Second, the technical analysis of the cause of the accident

 

  After repeated investigations, research, analysis, and the main causes of accidents, the design, storage, transportation, sales, use, and transformation of the gas cylinders were excluded from the technical point of view. The following focuses on the analysis of manufacturing and filling.

 

  After the accident, we went to the filling unit to investigate and analyze. Although there was no pre-inflation inspection and no re-inspection of the explosion of the gas cylinder, there were many accidents at the filling site, but Yakou denied the responsibility for filling, so that the bottle could not be confirmed. The station was overfilled and rejected categorically. To the gas cylinder manufacturer, I also refused to recognize any responsibility. It emphasized that the gas cylinder of the plant is a high-quality product. It is supervised by the safety supervision agency and supervised by the inspection unit. The national gas cylinder expert is the technical consultant of the plant and meets the national standards. any problem. Both filling and manufacturing emphasize that the cause of the accident is other links, and we do not provide positive answers to our technical analysis. After many negotiations, and asked the authority to issue a re-examination report, please support the scientific research unit, and finally accepted our technical analysis.

 

  1. Analysis of manufacturing defects:

 

  (1) Analysis of the shape and break section of the bottle body

 

  This is a blasting accident mainly based on ductile blasting. There are material defects in the source area, metal fibers with ductile fracture, brittle fracture crystal particles, radiation zone, partial break and shear lip, and whole cylinder blasting. The rear shape is very uneven, and it is inverted pear shape, and the upper part of the middle ring is more deformed than the lower part. The hardness is also very uneven, the middle of the cylinder is the lowest, the lower hardness is the highest, and the local hard part >45°SH reflects the poor quality of the cylinder and improper heat treatment.

 

  (2) Analysis of bearing stress of cylinder

 

  1 Maximum working pressure Ph=1.6Mpa

 

  2 Designed hydraulic pressure test pressure Pt=2.4Mpa

 

  3 Actual pressure when the cylinder is blasted

 

  Pb=0.95×

 

  Where: Sb - the minimum wall thickness of the blast opening mm

 

  Σb——the tensile strength of the material Mpa DO——outer diameter mm

 

  4 The pressure of this batch of cylinders during the factory burst test:

 

  Yield pressure PS=7.2Mpa, burst pressure Pb=10.2Mpa

 

  5 Summary: A. The pressure of the cylinder when the explosion is 5.82Mpa is less than the yield pressure of the batch of 7.2Mpa of the blasting test before leaving the factory, and is less than the blasting test pressure of 10.2Mpa, that is, the cylinder is insufficient in strength and will explode under the pressure of not exploding. The safety margin does not meet the requirements. B. The pressure of the cylinder when exploding is 5.82Mpa, which is greater than the maximum working pressure of 1.6Mpa, which is greater than the hydraulic pressure test pressure of 2.4Mpa, that is, the actual burst pressure of the cylinder exceeds the maximum allowable working pressure and overpressure blasting.

 

  (3) Analysis of the volume expansion ratio of the cylinder:

 

5 Summary: The expansion ratio of the cylinder after the explosion is η4=6.6%<10%, which is less than the result of the batch test η3=14.36%. The expansion ratio is too small, the plasticity is insufficient, and it is easy to cause full liquid, which is easy to cause cracks and explosions. .

 

  (4) Metallographic analysis of the main material of the cylinder

 

  1 There are excessive super-long debris, 1.35mm long 2. There is no flaky pearlite in the metallographic structure, and there are free network and semi-network carbides. 3 Summary: After many understandings in the manufacturing plant, the batch of cylinder heat treatment equipment was changed from the original fuel furnace to the medium frequency electric furnace heating. The equipment performance, treatment process, inspection technology and operation technology were unfamiliar, resulting in unqualified normalized structure.

 

  (5) Conclusions on manufacturing problems:

 

  The material is defective, the heat treatment is improper, the strength is insufficient, the plasticity is insufficient, the leaking net is inspected, and the supervision and inspection lacks experience, so that the cylinder will fail under the burst test pressure of 57%.

 

  2. Technical analysis of overfilling

 

  The tough blasting and cylinder burst pressure proposed in the above-mentioned cylinder manufacturing quality analysis is 5.82 MPa, which proves that the bottle is overpressure blasting. What is the pressure derived from this? The analysis is overfilling.

 

  If the YSP-15 gas cylinder is not overcharged, the pressure is mainly determined by the saturated vapor pressure. For example, propane with the highest content in liquefied petroleum gas and high saturation gas pressure is only 0.48Mpa at 0 °C, 20 °C. 0.85Mpa, 1.4Mpa at 40°C, and 2.14Mpa at 60°C, which is lower than the maximum working pressure of the cylinder at normal temperature, and lower than the hydraulic pressure test at the design warning temperature of 60°.

 

  The YSP-15 type cylinder has a combined volume of 35.5 liters. If it is not over-loaded, it will not be full at 60 ° C. It is still taking propane as an example: 15 kg of propane, only 28.4 liters at 0 ° C, 30 liters at 20 ° C, 32.3 liters at 40 ° C, 34.6 liters at 60 ° C, liquid phase density ∠ 98% qualified, that is, close to full liquid, there is a danger zone, but will not blast.

 

  But overfilling is very dangerous. Still taking propane as an example: an excess of 0.5kg at a volume of 33.4 liters at 40° has entered the dangerous warning zone, reaching 35.7 liters at 60°, which is full of liquid and enters the pressure surge zone. The excess of 1.5kg, at 30 ° C, the volume reached 34.2 liters, entered the dangerous warning zone, reached 35.6 liters at 40 ° C, was full of liquid, entered the pressure surge zone. If 2kg is installed, it will enter the dangerous warning zone at 15°C and enter the full liquid pressure surge zone at 32°C. For every 1 °C increase in the full liquid sheet, the cylinder is boosted by 1-3.4 MPa. When the temperature rises by 2 °C, the cylinder can be yielded and deformed. If the temperature rises by 4 °C, the explosion can be caused, and the burst pressure can reach 10 Mpa or more.

 

  The local maximum temperature of the day is 35.4 °C, the explosion time is about 5 pm, and the room temperature may be around 30-35 °C (there is insulation board on the floor, and the window is purely natural ventilation) will never be >60 °C. However, the cylinder has exploded by itself, and the direct cause is overfilling and overpressure blasting at room temperature.

 

  The overfilling calculation of the actual condition of the gas cylinder is as follows:

 

  The bottle's liquefied gas consists of 65% propane and 35% isobutane.

 

  The volume percentage of propane propagating at 32 ° C was 105.73%.

 

  The volume percentage of isobutane thermally expanded at 32 ° C was 103.45%.

 

  The volume percentage of the mixed liquefied petroleum gas which is thermally expanded at 32 ° C is 105.06%.

 

  The volume filling factor of YSP-15 cylinder is 85%.

 

  When the excess is 1.5kg, the volume filling factor is:

 

 

 

 96.3×105.06%=101.17% (full liquid)

 

  If 33 ° C, an excess of 1.5 kg, then:

 

  93.5% × (106.1% × 65% + 103.67% × 35%) = 98.42 (close to full liquid)

 

  If the excess is 2kg at 33 ° C, then:

 

  96.3% × 105.26 = 101.36% (full liquid)

 

  At 35 ° C, an excess of 1.5 kg, the result is:

 

  106.97% × 65% + 104.13% × 35% = 99.09% (closer to liquid)

 

  Summary: The cylinder is likely to be over 1.5-2kg in excess, full of liquid at about 32-33 °C, and then rises below 35 °C with room temperature, the pressure rises to about 5.8Mpa, the cylinder can not be compressed, deformed, destroyed, explosion.

 

  In short, the direct cause of this cylinder explosion is excessive filling, and the quality defects of cylinder manufacturing are important reasons.

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The fourth blasting vibration measurement technology seminar was held
BlastingVibrationTestingTechnologySeminar  BlastingVibrationTestingTechnologySeminar   OnApril15-17,2011,ChinaEngineeringBlastingAssociationhelda“BlastingVibrationTechnologySeminar”atButterflyValleyHotelinNanhai,GuangdongProvince.TheconferencewashostedbyChinaEngineeringBlastingAssociation,GuangzhouZhongboSafetyNetTechnologyCo.,Ltd.,YangtzeRiverWaterConservancyThecommitteewasco-organizedbytheYangtzeRiverScientificResearchInstituteandSouthChinaUniversityofTechnology,andGaoYintong,secretarygeneraloftheassociation,presidedoverthemeeting.  ChairmanWangXuguangattendedthemeetingtomakeanimportantspeech   ChairmanWangXuguangattendedthemeetingandmadeanimportantspeech. AcademicianWangpointedout:Atthebeginningofthe12thFive-YearPlan,thesituationinallwalksoflifeisverygood.Thisisagoodpromotionforthedevelopmentofourengineeringblastingindustry,anditalsomakesusfeelacertainpressure. Blastingvibrationmonitoringisamajoreventinourengineeringblastingindustry.ThesafetyaccidentsthattheChinaEngineeringBlastingAssociationhasbeeninvolvedininrecentyearsareallrelatedtotheimpactofblastingvibration.Therefore,theblastingvibrationpropagationlawshouldbewellrecorded,andadatabaseshouldbeestablished.Class,summary,refiningandprocessingcaneffectivelypromotetheresearchofblastingtheoryandpromotethebetterdevelopmentofengineeringblastingindustry.   AcademicianWangreviewedandsummarizedtheresearchworkonvibrationmeasurementintheindustrysincetheChinaEngineeringBlastingAssociation's"StudyontheImpactofBlastingVibrationandTestingTechnology"heldinHangzhouonApril10,2009.WangAcademicianpointedoutthattheChinaAssociationofExplosivesfrom2009SinceAprilofthisyear,threesymposiumsonblastingvibrationtestinghavebeenheld.Thismeetingisthefourthspecialmeeting.Afterthemeeting,thedevelopmentdirectionofindustrialblastingtestingtechnologyandvibrationtestinginstrumentsshouldbeclarifiedandshouldbeimplemented.Apersonisresponsibleforimplementation.   WuXinxia,​​QuGuangjian,GaoYing,HuangYuewen,LongYuan,YangNianhua,GaoWenxue,ChenQiliangandotherexpertsmadespecialspeeches,GuangzhouZhongboSafetyNetTechnologyCo.,Ltd.,SouthChinaUniversityofTechnologyandYangtzeRiverWaterResourcesCommissionChangjiangAcademyofSciencesandotherunitsontheblastingVibrationremotetesting,calibrationandsystemmanagementweredemonstratedanddemonstratedonsite.  ProfessorWuXinxiafromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommission  ProfessorQuGuangjianfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.  AssociateProfessorGaoYingfromSouthChinaUniversityofTechnology  SeniorEngineerHuangYangwenfromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommittee  ProfessorLongYuanfromthePLAUniversityofScienceandTechnology  ResearcherYangNianhuafromChinaAcademyofRailwaySciences  ProfessorofHighLiterature,BeijingUniversityofTechnology  AssociateProfessorChenQiliangfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.   ProfessorWuXinxiafromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommitteeintroducedtheconstructionconceptandmanagementmodeofthe"DangerDetectionRemoteSensingInformationManagementSystemforEngineeringBlasting"basedontheInternetofThingstechnology,andthecorrespondingblastingremoteintelligentrecorderandblastingvibrationremotecalibrationequipment;GuangzhouZhongboProfessorQuGuangjianofSafetyNetTechnologyCo.,Ltd.introducedtheimportanceofbuildingavibrationmeasurementinformationmanagementsystemandthecomposition,functionandobjectivesofthevibrationmeasurementinformationmanagementsystem,aswellasremotecalibrationtechnology,dataprocessingandmethods;AssociateProfessorGaoYingofSouthChinaUniversityofTechnologyThekeytechnologyofremotecalibrationandvibrationmeasurementplatformbasedonvibrationgridisalsodemonstrated.TheseniorengineerofYangtzeRiverWaterResourcesCommitteeYangYuewenintroducedthecomposition,performanceandremotecalibrationmethodofblastingdatamonitoringsystembasedonInternetofThings.TheproblemwasdiscussedbyProf.LongYuanfromPLAUniversityofScienceandTechnology.Theresearchonthestandardizationofengineeringblastingvibrationtestingtechnologywasintroduced.ResearcherYangNianhuaofChinaRailwayScienceResearchInstituteintroducedthetechnologyoffieldtestingofblastingvibration;ProfessorGaoWenofBeijingUniversityofTechnologyintroducedshallowtunnel Excavationblastingvibrationremotemonitoringsystemandtestingtechnology;AssociateProfessorChenQiliangofGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.takesthewesternpipelineblastingvibrationmonitoringpracticeasanexampletointroducethestepsandcontentsofblastingvibrationmonitoringwork,anddiscussestheblastingvibrationmonitoringtechnologyinthenearApplicationproblemsinpipelineblastingengineering.   Afteraheateddiscussion,theparticipatingexpertsaffirmedthattheapplicationofinformationnetworktechnologyinthefieldofengineeringblastingisthefuturedevelopmenttrend,andputforwardthepreparationofthe"TechnicalTeachingMaterialsforEngineeringBlastingVibrationMeasurementTechnology"and"TechnicalSpecificationsforEngineeringBlastingVibrationInspection(S
Associate Professor Chen Qiliang from Guangzhou Zhongbo Safety Net Technology Co., Ltd.   Professor Wu Xinxia from the Yangtze River Scientific Research Institute of the Yangtze River Water Resources Committee introduced
Announcement:TheMinistryofPublicSecurityissuedtwostandardsforgradingmanagementofblastingoperations   AccordingtotheRegulationsontheSafetyManagementofCivilExplosives,theMinistryofPublicSecurityissuedtwostandardsforthegradingmanagementofblastingoperationsonMay2,2012-"QualificationRequirementsandManagementRequirementsforBlastingOperationUnits"(GA990-2012),Theblastingoperationprojectmanagementrequirements(GA991-2012)(hereinafterreferredtoas"twostandards"),andissuedthe"Noticeontheimplementationoftheblastingoperationunitqualificationconditionsandmanagementrequirements"and"blastingoperationprojectmanagementrequirements"》.   Recently,theMinistryofPublicSecuritywillorganizeandcarryoutnationalpublicityactivities. TheProvincialDepartmentwill,inaccordancewiththespiritoftheMinistryofPublicSecurity'snoticeandtherequirementsofpublicity,combinedwiththepracticeofpublicsecuritymanagementintheblastingoperationindustryofourprovince,carefullystudyandformulatetheimplementationofworksteps,conductresearch,developaworksystem,establishaspecialorganization,andcarryoutimplementationworkinanorderlymanner. Thespecificworkrequirementsaretobenotifiedbytheprovincialgovernment.   AccordingtothenoticeoftheMinistryofPublicSecurity,theworkofcleaningupandrectifyingtheexistingblastingoperationsunitsandissuingthe"BlastingOperationUnitPermit"shallbecompletedbyDecember31,2012. Therefore,asofJanuary1,2013,anyunitmustholdtheBlastingOperationUnitPermittoengageinblastingoperations,otherwiselegalliabilityshouldbepursued. Beforethatdate,theoriginallegal"ExplosivesUsePermit"cancontinuetobeusedbyunitsthathavenotbeenorderedtostoptheiremployment.Thecommercialblastingoperationunitcanstillholdaneffectiveconstructiondepartment"blastinganddemolition"qualification.Thedocumentsareintheprovincetoundertaketheblastingoperationitemsofthecorrespondingtype.   Fromnowon,theprovincewillnolongerapprovetheoriginal"ExplosiveGoodsUsePermit",andthepublicsecurityorganswillstopacceptingtheconditionalreviewworkoftheconstructionandconstructiondepartmententrustedbytheconstructiondepartmentto"blastinganddemolitioncontractingqualifications".   downloadattachment:   1.Noticeontheimplementationofthe"QualificationConditionsandManagementRequirementsforBlastingOperationUnits"and"ManagementRequirementsforBlastingOperationProjects"   2.Qualificationconditionsandmanagementrequirementsoftheblastingoperationunit   3.Blastingoperationprojectmanagementrequirements
Special Report on Demolition Blasting of 104 Meters High Building in Zhongshan City, Guangdong Province
Editor'snote:   ThePeakGardenwasbuiltin1994andwascappedin1997.The34-storeybuildingis344.1metershigh.Itisaframe-supportedshearwallstructure.Itisthetallestbuildingdemolishedbydomesticblastingandhasappliedtobecomethe"Asia'sfirstexplosion".Oneofthefewhigh-risebuildings. ThePeakGardenwasappliedforblastinginFebruarytoofficialblastingonAugust13.Thetimewasupto6months.Thedayswearelookingforwardtoarefinallycoming,andIwishtheChinesepeopleasuccessfulblast!   Joyaftersuccessfulblasting    Figure1   FigureII   Successfulblastingofthetopgarden    PreparetoblastChenShaopantoprovidepictures    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess  ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess   "Asia'sfirst-explosion"trackingreport-   Unfinished15yearsofplanning   "Asia'sfirstexplosion"     ——Theblastingofthe104.1mhighbuildingofShijiePeakGardeninZhongshan,Guangdong   "Five,four,three,two,one,detonation!"   At10:30onthemorningofAugust13,withtheorderofLiuWen,thechairmanofthesmashingengineeringheadquartersofShijiePeakGarden,thestaffofGuangdongZhongrenGroupConstructionCo.,Ltd.Pressedthepulsedetonatorinyourhand. "嘣,嘣,嘣..."18consecutiveloudnoises,afterashort3.6seconds,atotalheightof104.1meters,atotalof34layersofZhongshanShijiePeakGardenunfinishedbuildingsweighingtensofthousandsoftonsofbody,oneSuddenly,hesuddenly"squats"andsuddenlyrushestowardthewestsideoftheopenspace. Thethreehigh-poweredfireenginesthathavebeenwaitingforalongtimeimmediatelysprayedahugeamountofwatermist,andcarriedout“interceptioninterception”onthedust“whitesmoke”causedbytheexplosion,andsprinkledwatertoreducedust. Congratulationsontheheadquartersofthemeetingroomonthe4thfloorofShunjingGarden,andthesimpleviewingplatformsetuponthebalconyburstintoapplause. Atthispoint,theblastingprojectofthePeakGarden,whichisknownasthe"Asia'sNo.1Blast",wasacompletesuccess. Afterthat,itwillenterthedemolitionandclean-upphaseforupto50days.   ItisunderstoodthatthetopofthehillgardenislocatedinthesouthsideofZhongshanCollege,DongchengDistrict,ZhongshanCity,ZhongshanCity,ontheeastsideofthesnowroad,willbebuiltintheStarCityBuilding. Thebuildingtobeexplodedis104.1meters,withatotalof34floors(including1basement),33.8meterswidefromeasttowest,38.5meterslongfromnorthtosouth,and27875squaremeters. Thebuildingisframe-supportedshearwallstructure,arrangedina“well”shape.The1stfloorandthebasementareframestructures,the2-32floorsareshearwallstructures,andthemiddlepartisthecoretube. Theeastsideofthebuildingis44metersawayfromthebottomoftheslope,thesoutheastsideis40metersawayfromDongyueTemple;thesouthsideis5.2metersawayfromthewall,only6metersawayfromthenearestresidentialhouse;thewestsideis81metersawayfromthebottomoftheslope. Thebuildingwasbuiltin1994andwascappedin1997. Forvariousreasons,thebuildinghasnotbeenofficiallyputintouse.IthasbeenrenamedasthePeakGarden,YangmingMountainVilla,StarCity,andZhongshanCity,butithasneverbeenabletogetridofthefateofthe"unfinished". InJune2007,thebuildingwastransferredtoZhongshanChangjiangZhaoyeRealEstateDevelopmentCo.,Ltd.asawhole. InordertocopewiththeoverallplanningdevelopmentofZhongshanCity,acceleratethepaceofrenovationoftheoldcity,andaccordingtothecompany'sprojectplanningneeds,decidedtouseblastingdemolition,theplotwillberebuiltafterthedemolition.   OnFebruary25,commissionedbythePublicSecurityBureauoftheMinistryofPublicSecurity,theGuangdongProvincialPublicSecurityDepartmentandtheZhongshanPublicSecurityBureau,theChinaEngineeringBlastingAssociationhostedareviewmeetinginBeijingonthe“BlastingDemolitionProjectoftheUnfinishedBuildingoftheShijiazhuangPeakGardeninZhongshanCity”.TheexpertgroupledbyWangXuguang,academicianoftheChineseAcademyofEngineeringandchairmanoftheChinaEngineeringBlastingAssociation,listenedtothebriefingandreviewrequirementsoftheProvincialPublicSecurityDepartmentandtheMunicipalPublicSecurityBureauontheblastingproject,andintroducedtheconstructionplanoftheGuangdongZhongrenGroup.Afterquestioninganddiscussion,thereviewopinionswereputforwardandtheMunicipalPublicSecurityBureauwasapprovedtoapprovetheconstructionoftheproject. Inordertoensurethesafetyandsuccessoftheblastingdemolitionproject,theZhongshanMunicipalGovernmenthasspeciallysetupacoordinationheadquarters,whichisresponsiblefort
Call for papers on participation in the "6th International Conference on Explosives and Blasting Technology of China, Japan and Korea"
Allrelevantunits:   The6thInternationalConferenceonExplosivesandBlastingTechnologyofChina,JapanandKoreawasscheduledtobeheldinSouthKoreafromOctober12to16,2011.Theconferenceincludedexplosives,detonationequipment,geotechnicalblasting,mineblastinganddemolitionblasting. Inordertostrengtheninternationalacademicexchangesandtechnicalcooperation,theChinaEngineeringBlastingAssociationisnowissuingnoticesofessaystorelevantunitsanddepartments.Expertsfromenterprises,institutions,researchinstitutesanduniversitiesarewelcometosignupandactivelycontributetotheconference.   Theessaycontentisasfollows:   1.Callforpapers:   TheauthorisaskedtofirstsubmitanEnglishabstractofabout200to400words(includingthetitleofthearticle,author,unit,contactnumberande-mail)andkeywords. Thebestchoiceis3to5keywords.   Second,thedraftschedule:   (1)DeadlineforsubmissionofEnglishabstracts:July20,2011   (2)DeadlineforsubmissionoffulltextinEnglish:September10,2011   Third,themodeofsubmission:   PleasesendtheEnglishabstracttotheemailaddress:cseb@cseb.org.cnormingxiuzhu@yahoo.com.cn   Contact:ZhuMingxiu   Contactnumber:(010)88399565   Fax:(010)68344564   Contactaddress:No.1WenxingStreet,Xizhimen,Beijing100044
Seven years of honing the "Blasting Net" sharp display
Time of issue : 2019-05-30 10:01:00
TheCoalIndustryPublishingHousepublishedthenewbook"ThePracticalManualforCoalMineBlasting"publishedinApril2008,andintroducedthedetailsof"ZhongboNet"intheentiresectionofChapter23ofChapter23,fullyaffirmingitssafetytothecoalmineblastingindustry.Informationproductionplaysanimportantrole.   ItisenoughtoprovethatundertheleadershipoftheChinaEngineeringBlastingAssociationandthestrongsupportoftheblastingassociationsofvariousprovincesandcities,aftersevenyearsoftempering,intheeraofrapiddevelopmentofinformationtechnology,"ChinaBlastNetwork"hasbecomeChinawithoutanydispute.Theforerunnerofthedevelopmentofinformationizationintheengineeringblastingindustryhasbecomethelinkoftheinformationtransmissionoftheblastingindustryandthecivilexplosiveequipmentindustryandtheinformationcenterfortheacquisitionofrelevantinformation.   "ChinaBlastNetwork"hasbeenrecognizedbytheindustryasthefirstportalsiteoftheblastingindustry. Theloudandmeaningfulnameof"BlastingNet"isonceagainrevealed!   ChinaBlastingNetworkEditorialDepartment   April10,2009

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