The ST Divisional Operation Statistics summarise the operation of CERN's technical infrastructure, which is operated by the ST division. In particular the impact of faults on the accelerators and the effectiveness of corrective maintenance are addressed. The statistics are based on the individual statistics of the ST equipment groups and the operation statistics of the PS, SL and ST operation teams

Alvarez, A

Bätz, M

Olesen, K

CERN Document Server

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCHORGANISATION EUROPÉENNE POUR LA RECHERCHE NUCLÉAIRECERN - ST DivisionPresented at the 4th ST WorkshopChamonix, France, 30 January - 2 February 2001CERN-ST-2001-0381st February 2001ST DIVISIONAL OPERATION STATISTICS 2000M. Batz, K. Olesen, A. AlvarezAbstractThe ST Divisional Operation Statistics summarise the operation of CERN’s technicalinfrastructure, which is operated by the ST division. In particular the impact of faults on theaccelerators and the effectiveness of corrective maintenance are addressed. The statistics arebased on the individual statistics of the ST equipment groups and the operation statistics ofthe PS, SL and ST operation teams.21 INTRODUCTIONThe ST Divisional Operation Statistics summarize the activities of the ST division concerning CERN'stechnical infrastructure during the year 2000. The statistics are based on the information of theoperation teams of the SL and PS divisions, the Technical Control Room (TCR), the computer aidedmaintenance management system (RAPIER, MP5), the alarm log database and the information of theST equipment groups. This document presents only a short summary of the more detailed statisticspublished by the specialists of each sector and is based on the results of the ST Operation Working [1].The down time and faults of the technical infrastructure that had an influence on the operation ofCERN's accelerators and physics experiments are particularly addressed.A ST Incident Report has been proposed and tested by the operation working group incollaboration with the operation teams of the SL and the PS divisions [2]. This report has proved to bevery efficient during the tests and will be correctly put in service for the restart of the accelerators in2001. With this report improvements of the operation of the technical infrastructure can be plannedmore carefully and the creation of the statistics will be easier.2 TECHNICAL INFRASTRUCTURE OPERATION2.1 Alarms and Access ST-AA2.1.1 Alarm causes and fire brigade interventions Meyrin, Prevessin, LEP [3]6944387090458 5 7 15 7 8 178 70282 2 9 9 6 11 72554236 3 3 9 3 11 143916132413920100200300400500600700800TOTAL NDE DDS DIV FSO GEC TEM HUM FEU COU FCI POUCAUSES D'ALARMESNOMBRED'INTERVENTIONS1998 1999 2000NDENON DETERMINEEDDS DERANGEMENT DETECTEUR / SYSTEMEDIVRAVAUXDIVERSFSO FUMEESOUDUREGECGAZ D'ECHAPPEMENTTEMTEMPERATUREHUMHUMIDITEFEU INCENDIEVERITABLEOU SIMULATIONCOUCOUPUREDECOURANTFCIFUMEUR352130866 65 525 5 2 11 1 4 2808492142824212 2 5 13 13 3 26944387090458 5 7 15 7 8 161339178 70262 2 9 9 6 11 73922412554236 3 3 9 3 11 140100200300400500600700800900TOTAL NDE DDS DIV FSO GEC TEM HUM FEU COU FCI POUCAUSED'ALARMESNOMBRED'INTERVENTIONS1996 1997 1998 1999 2000NDENON DETERMINEEDDSDERANGEMENT DETECTEUR/ SYSTEMEDIVRAVAUXDIVERSFSOFUMEE SOUDUREGECGAZ D'ECHAPPEMENTTEMTEMPERATUREHUMHUMIDITEFEU INCENDIEVERITABLEOUSIMULATIONCOUCOUPUREDECOURANTFCI FUMEURPOUPOUSSIERE2.1.2 Total of alarm causes 1996, 1997, 1998, 1999 et 2000 [3]2.1.3 Comments [3]With respect to last years report:- the total number of interventions decreased by 221 or 36,1 %,- the number of detectors decreased by 8,7% of a total of 5763 (numbers of the 31/12/2000),- the number of undetermined interventions (NDE) and the perturbations faults (DDS) havedecreased by 203 or 43,3 %.2.2 Heavy Handling ST-HM2.2.1 Type of Work in Hours and Percentage [4]0100020003000400050006000700080009000Heures4Q 3Q 2Q 1QSemestrePréventifRévisionTravaux gestion techniqueRéparationDépannageAméliorationAmelioration TISDiversTravaux neufsTotale42.2.2 Type of Work in Percentage [4]x2.3 Technical Facility Management ST-TFM2.3.1 Evolution of Maintenance in the domains of Cooling/Ventilation-Heating, Electricity andCivil Engineering [5]3 ACCELERATOR INFRASTRUCTURE OPERATIONThe accelerator down time that is attributed to the different ST equipment groups consists exclusivelyof the time that has been caused by a fault in the respective equipment. It is counted from theoccurrence of the fault until the accelerator is back to the state before the fault. Down time hours ofthe injectors are not counted in the down stream accelerators.Maintenance Cooling & Ventilation, Heating3131 32712885 2972 277815181665 1757 1618144451 75 168 16805001000150020002500300035001996 1997 1998 1999 2000NumberofInterventionsPréventif Correctif ExploitationEvolution of Corrective Maintenance1'4441'6181'7571'5181'6652'7762'5602'9982'707 2'5142'3091'6111'5911'979 1'9816'2676'3066'5125'8166'12701'0002'0003'0004'0005'0006'0007'0001996 1997 1998 1999 2000NumberofInterventionsChauffage - clim. Electricité Génie civil Total- 1%- 7%+ 17%-11%aCorrective Maintenance Civil EngineeringAssainissement5%Menuiserie bois12%Routes etparkings0.3%Plafonds3%Maçonnerie2%Stores5%Toitures6%Vitrerie1%Sanitaires41%Rev. de sol3%Mobilier6%Menuiserie métal.16%CorrectiveMaintenance per Type17231603 1667189915821298118113281196921151 86 100 141 10902004006008001000120014001600180020001996 1997 1998 1999 2000NumberofInterventionsEclairage Tableaux Autres0.0010.0020.0030.0040.0050.0060.0070.00Pourcentage4Q 3Q 2Q 1QSemestrePréventifRévisionTravaux gestion techniqueRéparationDépannageAméliorationAmelioration TISDivers53.1 SPS and LEP Down Time [6]3.2 PS Complex Down Time [7]For the PS complex detailed statistics could not be delivered. According to the numbers of the STdivision the CPS was stopped 8 hours due to faults of ST-EL equipment and 14,5 hours due to faultsin ST-CV equipment.3.3 Monitoring and Operation ST-MO3.3.1 Work RequestsThe total number of work requests has increased by 10% to over 12000 per year. More work requestshave been dispatched to ST-CV and ST-EL than in 1999. However, only half of the work request toST-EL passed via the TCR. The TCR workload due to TFM remained constant over past for years atabout 30%.LEP 2000 Total Down TimeST-AA2%ST-EL17%ST-CV3%Divers78%SPS 2000 Total Down TimeST-EL9.2%ST-AA1.2%ST-CV0.4%Divers89.3%020004000600080001000012000140001997 1998 1999 2000DIVERSTFM-CETFM-CVTFM-ELHMELCVAATCR63.3.2 TCR On-Site InterventionsThe number of TCR on-siteinterventions is stable over the lastyears, as well as the dominantdomains of work. The TCRinterventions represent nearly 10%of the total work requestsdispatched.3.3.3 AlarmsEven though great efforts have beenmade to limit the number of alarmsin the TCR, the total number ofalarms increased by 15,5% withrespect to 1999. A considerableamount of alarms is due to the LEPdismantling and the Water 2000project at the end of the year.However, there were moreequipment tests during the year 2000than in 1999, the TCR took themonitoring of the SPS vacuum andthe problem of the cryogenicssystems of LEP caused many alarms.An increasing number of safetyrelated alarms of level zero wassurprising; more than 6000 only inthe month of August.3.3.4 CommentsThe total workload of the TCR operators increased by about 12% with respect to 1999, considering thestable number of on-site interventions and the increase in work requests and alarms.Alarm progression 1999, 200036047 361658488744540325422643029543299933170325238 30895377683441229613286624025421832 217391533319797165251238325571227360100002000030000400005000060000700008000090000Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecNumberofalarms20001999Alarms per systems13232951880768121044050728001 37017 467532643456775358020 83 154230185211 2217941200432995791976775 89583106812020000400006000080000100000120000EXPERIENCES GSSCOMMUNICATIONSERVICESCRYOGENIECONTROLEELECTRIQUECONTROLEELECTRIQUETERMIQUE/CLIMATISATIONVIDESECURITEEAUNumberofalarms19992000050100150200250300350400GSSAIRCONDITIONNE VIDEACCESCOMMUNICATIONCRYOGENIEDIVERS EAUELECTRIQUECONTROLESECURITETHERMIQUEInterventions19981999200073.4 Electricity ST-EL3.4.1 Intervention Requests and Fault Consequences [8]3.4.2 Equipment Faults [7]3.5 Cooling and Ventilation ST-CV3.5.1 Down Time Hours Complex PS and Linacs for Leptons and Protons [9]Intervention Requestsinterlocks,AUG,..12%defautsutilisateurs,surcharges,resets37%PANNESEQUIPEMENT19%perturbationsEDF0%erreurshumaines0%manoeuvresurgentes13%auxiliaires48V UPS8%faussesalarmes4%assistances,mesures,10%Fault ConsequencesConsequences localisees32%Sansconsequence59%pertubationdu PS1%perturbationdu SPS4%pertubationdu LEP4%Hours of CV stops in PS14.52520.579.501020304050607080901997 1998 1999 2000YearHoursHours of downtime caused by CV equip.Availability and downtime for PS2.3%4.1%7.1%3.4%98.8%99.0%99.2%99.4%99.6%99.8%100.0%1997 1998 1999 2000Year0.0%1.0%2.0%3.0%4.0%5.0%6.0%7.0%8.0%Availability of CV equipment for physicsCV equip.downtime / total hours of downtimetableaux BT13%Cellules MT15%AUG2%transformateursMT3%protections MT7%Cables 18kV3%equipementsTHT1%48V etauxiliaires7%auxiliaires 48VUPS8%Groupes diesels11%filtres etcompensateurs3%contrôle20%83.5.2 Down Time Hours SPS for Leptons, Protons and Ions [9]3.5.3 Down Time Hours LEP [9]4 CONCLUSIONSA summary of the operation of CERN’s technical infrastructure by the ST division has been drawn up.The data and data sources have been multiplied and synchronized as much as possible with respect toprevious statistics. The ST Operation Working Group has set the guidelines for these statistics but onlypart of them could be implemented due to technical limitations or the unavailability of certain data.With the help of the ST Accelerator Incident Report that will be implemented, more data on thephysics down time will be available in the future. The preparation for the LHC operation can start.With respect to the increasing workload in the TCR measures have to be taken to assure a good qualityfor the LHC.Number and hours of CV stops11.8231.69.605101520251997 1998 1999 2000YearNumberHours of downtime caused by CV equip.Number and hours of CV stops010.47.51101231997 1998 1999 2000YearNumber024681012HoursNumber of stops caused by CV equip.Hours of downtime caused by CV equip.Availability and downtime2.7%0.0%2.9%2.0%99.6%99.7%99.8%99.9%100.0%100.1%1997 1998 1999 2000Year0.0%0.5%1.0%1.5%2.0%2.5%3.0%3.5%Availability of CV equipment for physicsCV equip.downtime / total hours of downtimeAvailability and downtime1.41%3.98%0.53%1.32%99.40%99.50%99.60%99.70%99.80%99.90%100.00%100.10%1997 1998 1999 2000Year0.00%1.00%2.00%3.00%4.00%5.00%Availability of CV equipment for physicsCV equip.downtime / total hours of downtime9ACKNOWLEDGEMENTSThe creation of this paper was only possible thanks to the commitment of any of the persons whofurnished the data on the technical infrastructure operation. In particular we have to thank all themembers of the operation working.REFERENCES[1] M. Batz, ST Divisional Operation Statistics -Design and Production Document, CERNST-2000-019 (MO)[2] M. Batz, ST Accelerator Incident Report, CERN 2000, unpublished draft version[3] M. Cottier, Systèmes de Détection Incendie Analyse des Rapports Pompiers 2000, CERN2001[4] B. Langer, Statistique 2000 ST-HM, CERN 2000[5] P. Pepinster, Statistique 2000 ST-TFM-MA, CERN 2000[6] SL Accelerator Statistics, SL-Note-00-060 OP[7] PS Accelerator Statistics[8] G. Cumer, Exploitation Réseau Electrique Bilan 2000[9] R. Principe, J.Kuhnl-Kinel, Performance Report and Improvements in CV Machine Areas

ST Divisional Operation Statistics 2000

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