Instructions for the Preparation of Contributions to Cern Reports s2

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH ORGANISATION EUROPÉENNE POUR LA RECHERCHE NUCLÉAIRE

CERN - ST Division

CERN-ST-2001-038 1st February 2001

ST DIVISIONAL OPERATION STATISTICS 2000

M. Batz, K. Olesen, A. Alvarez

Abstract

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.

Presented at the 4th ST Workshop Chamonix, France, 30 January - 2 February 2001 1 INTRODUCTION The ST Divisional Operation Statistics summarize the activities of the ST division concerning CERN's technical infrastructure during the year 2000. The statistics are based on the information of the operation teams of the SL and PS divisions, the Technical Control Room (TCR), the computer aided maintenance management system (RAPIER, MP5), the alarm log database and the information of the ST equipment groups. This document presents only a short summary of the more detailed statistics published 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 of CERN's accelerators and physics experiments are particularly addressed. A ST Incident Report has been proposed and tested by the operation working group in collaboration with the operation teams of the SL and the PS divisions [2]. This report has proved to be very efficient during the tests and will be correctly put in service for the restart of the accelerators in 2001. With this report improvements of the operation of the technical infrastructure can be planned more carefully and the creation of the statistics will be easier.

2 TECHNICAL INFRASTRUCTURE OPERATION 2.1 Alarms and Access ST-AA 2.1.1 Alarm causes and fire brigade interventions Meyrin, Prevessin, LEP [3]

800 NDE NON DETERMINEE 694 DDS DERANGEMENT DETECTEUR / SYSTEME 700 DIV RAVAUX DIVERS 613 FSO FUMEE SOUDURE GEC GAZ D'ECHAPPEMENT S 600

N TEM TEMPERATURE O

I HUM HUMIDITE T

N 500 FEU INCENDIE VERITABLE OU SIMULATION E 438 V COU COUPURE DE COURANT R 392 391 E FCI FUMEUR

T 400 N I ' D

R 241 B M

O 200 N

90 100 70 78 70 54 45 28 25 23 15 14 8 2 6 5 2 3 7 9 3 9 9 7 6 3 8 11 11 1 7 0 TOTAL N DE DDS DIV FSO GEC TEM H UM FEU COU FCI POU

CAUSES D'ALARMES 1998 1999 2000

2 2.1.2 Total of alarm causes 1996, 1997, 1998, 1999 et 2000 [3]

900 NDE NON DETERMINEE 808 DDS DERANGEMENT DETECTEUR / SYSTEME 800 DIV RAVAUX DIVERS FSO FUMEE SOUDURE GEC GAZ D'ECHAPPEMENT 694 700 TEM TEMPERATURE HUM HUMIDITE 613 FEU INCENDIE VERITABLE OU SIMULATION S

N 600 COU COUPURE DE COURANT O I

T FCI FUMEUR 521 N

E 492 POU POUSSIERE V 500 R

E 438 T N I ' 392 391 D 400 E R B 308 M O

N 300 24 1

200 142

90 78 82 100 66 70 65 70 54 524245 25 26 23 1315 13 14 5 12 8 2 6 5 2 5 2 3 2 5 7 9 3 11 9 9 1 7 6 3 4 3 8 1111 2 2 1 7 0 TOTAL NDE DDS DIV FSO GEC TEM HUM FEU COU FCI POU

CAUSE D'ALARMES 1996 1997 1998 1999 2000

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) have decreased by 203 or 43,3 %. 2.2 Heavy Handling ST-HM 2.2.1 Type of Work in Hours and Percentage [4]

9000 Préventif 8000 Révision 7000 Travaux gestion technique 6000 Réparation Dépannage s

e 5000 r Amélioration u e 4000 H Amelioration TIS 3000 Divers Travaux neufs 2000 Totale 1000

0 4Q 3Q 2Q 1Q Semestre

3 2.2.2 Type of Work in Percentage [4]x

60.00 Préventif Révision 50.00

e Travaux gestion technique g a t 40.00

n Réparation e c r Dépannage

u 30.00 o

P Amélioration 20.00 Amelioration TIS 10.00 Divers

0.00 4Q 3Q 2Q 1Q Semestre

2.3 Technical Facility Management ST-TFM 2.3.1 Evolution of Maintenance in the domains of Cooling/Ventilation-Heating, Electricity and Civil Engineering [5]

Evolution of Corrective Maintenance Maintenance Cooling & Ventilation, Heating

- 1% 7'000 3500 3271 6'306 3131 6'127 6'267 6'512 2885 2972 6'000 3000 2778 s s n 5'816 n o i o i t

5'000 t n 2500 n e - 7% e v r v r e

t 4'000 e n

t 2000 1757 I

1665 2'998 n f 1618 I o 2'776 2'514 1518 3'000 2'560 2'707 f 1444 r

+ 17% o e 1500 r

1'979 1'981 e m 1'665 2'000 2'309 b u 1'611 m N 1'757 1000 1'618 u 1'518 1'591 1'444 1'000 N -11% 500 168 168 0 51 75 1996 1997 1998 1999 2000 0 1996 1997 1998 1999 2000

Chauffage - clim. Electricité Génie civil Total Préventif Correctif Exploitation 3 ACCELERATOR INFRASTRUCTURE OPERATION

Corrective Maintenance Civil Engineering Corrective Maintenance per Type R o u t e s e t A s s a i n i s s e m e n t M o b i l i e r p a r k i n g s 5 % 0 . 3 % 2000 6 % 1899 M e n u i s e r i e m é t a l . M e n u i s e r i e b o i s 1800 1 6 % 1 2 % 1723 1667 1600 1603 1582 s

P l a f o n d s n o

i 1400 3 % t n 1298 1328 e

v 1200 1181 1196 M a ç o n n e r i e r e t

n 1000

2 % I 921 f o

S t o r e s r e

5 % b 600 m u

T o i t u r e s N 400 6 % 200 151 86 100 141 109 V i t r e r i e 0 1 % R e v . d e s o l 1996 1997 1998 1999 2000 S a n i t a i r e s 3 % 4 1 % Eclairage Tableaux Autres

The accelerator down time that is attributed to the different ST equipment groups consists exclusively of the time that has been caused by a fault in the respective equipment. It is counted from the occurrence of the fault until the accelerator is back to the state before the fault. Down time hours of the injectors are not counted in the down stream accelerators.

4 3.1 SPS and LEP Down Time [6]

LEP 2000 Total Down Time SPS 2000 Total Down Time

Divers Divers 78% ST-EL 89.3% ST-EL 17% 9.2%

ST-CV ST-CV ST-AA 0.4% ST-AA 3% 1.2% 2%

3.2 PS Complex Down Time [7] For the PS complex detailed statistics could not be delivered. According to the numbers of the ST division the CPS was stopped 8 hours due to faults of ST-EL equipment and 14,5 hours due to faults in ST-CV equipment. 3.3 Monitoring and Operation ST-MO 3.3.1 Work Requests

DIVERS 12000 TFM-CE

10000 TFM-CV TFM-EL 8000 HM 6000 EL

4000 CV AA 2000 TCR

0 1997 1998 1999 2000

The total number of work requests has increased by 10% to over 12000 per year. More work requests have been dispatched to ST-CV and ST-EL than in 1999. However, only half of the work request to ST-EL passed via the TCR. The TCR workload due to TFM remained constant over past for years at about 30%.

5 3.3.2 TCR On-Site Interventions

1998 The number of TCR on-site

350 1999 2000 interventions is stable over the last years, as well as the dominant 300 domains of work. The TCR

250 s interventions represent nearly 10% n o i t

n of the total work requests

e 200 v r e

t dispatched. n I 150

E N E E E E E S N E S O I S U L S N D E I N R A U IT U I C T E E Q O R Q G IO V A V E I R I T C C G I R T U M I A I O D T N C R D N Y C E E N E O S U R L C H O M C E T C M IR O A C

3.3.3 Alarms

Alarms per systems

120000 Even though great efforts have been 1999

2000 2 made to limit the number of alarms 1

100000 8 6 0

1 in the TCR, the total number of 3 8 5

80000 9 8 s

5 alarms increased by 15,5% with 7 m r 7 a l 6 a 7 f respect to 1999. A considerable o 60000

9 r 5 e 1 7 b 9 7 7 6 m amount of alarms is due to the LEP 5 3 u 5 5 9 N 0 7 7 40000 9 0 6 0 2 7 2 4 2 5 3 1

1 0 dismantling and the Water 2000 0 4 0 4 8 4 7 1 5 4 3 0 3 3 0 9

20000 4 8 7

6 project at the end of the year. 2 1 2 2 2 8 4 5 0 1 1 2 2 4 1 9 8 8 0 1 3 0 2 3 8 5 6 1 2

1 0 3 8 1 1 7 3 2 5 However, there were more 0 E N S N E E E S S I U L O E E U E S IO E N Q U I IT C T I O Q T ID A equipment tests during the year 2000 G IC E I A R E N A R R V U E C V G T T R IS I I R O C N T T C R N E Y E O C A E E U S R L E S P E C L IM X M C E L than in 1999, the TCR took the E M E C O L / C O E R U T Q N I O M monitoring of the SPS vacuum and R C E T the problem of the cryogenics

Alarm progression 1999, 2000 systems of LEP caused many alarms. An increasing number of safety 90000 84887 related alarms of level zero was 80000 surprising; more than 6000 only in

2000 70000 the month of August. 1999

60000 s m r a l 50000 a f o r 40254 44540 e 37768

b 34412 40000 m u 36047 36165 N 29543 25238 29993 30895 32542 30000 26430 31703 28662 29613 19797 25571 20000 16525 22736 21832 21739

10000 15333 12383

0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

3.3.4 Comments The total workload of the TCR operators increased by about 12% with respect to 1999, considering the stable number of on-site interventions and the increase in work requests and alarms.

6 3.4 Electricity ST-EL 3.4.1 Intervention Requests and Fault Consequences [8]

Fault Consequences Intervention Requests perturbation erreurs perturbation pertubation du SP S manoeuvres humaines s EDF du LEP P ANNES 4% urgentes 0% 0% 4% EQUIP EME pertubat ion 13% auxiliaires NT du P S 48V UP S 19% 1% 8% fausses alarmes Sans 4% interlocks, consequence AUG,.. 59% assistances, 12% Consequenc mesures, es localisees defaut s 10% 32% utilisateurs, surcharges, resets 37% 3.4.2 Equipment Faults [7] protections equipem ents Cables 18kV MT T HT 3% 7% 1%

tableaux BT Cellules MT 13% 15% transformateurs MT contrôle 3% 20% filtres et compensat eurs AUG 3% 2% auxiliaires 48V Groupes diesels 48V et UP S 11% auxiliaires 8% 7%

3.5 Cooling and Ventilation ST-CV 3.5.1 Down Time Hours Complex PS and Linacs for Leptons and Protons [9]

Hours of CV stops in PS Availability and downtime for PS 90 79.5 1 0 0 . 0 % 8 . 0 % 80 9 9 . 8 % 7.1% 7 . 0 % 70 6 . 0 % 60 9 9 . 6 % 5 . 0 %

s 4.1%

r 50 9 9 . 4 % 4 . 0 % u

o 40 3.4% 3 . 0 %

H 9 9 . 2 % 30 2.3%2 . 0 % 20.5 25 9 9 . 0 % 20 1 . 0 % 14.5 10 9 8 . 8 % 0 . 0 % 0 1 9 9 7 1 9 9 8 1 9 9 9 2 0 0 0 1997 1998 1999 2000 Year Year A v a i l a b i l i t y o f C V e q u i p m e n t f o r p h y s i c s Hours of dow ntime caused by CV equip. C V e q u i p . d o w n t i m e / t o t a l h o u r s o f d o w n t i m e

7 3.5.2 Down Time Hours SPS for Leptons, Protons and Ions [9]

Number and hours of CV stops Availability and downtime 25 Number and hours of CV23 stops 100.20% Availability and downtime 5.00% 320 12 100.1% 3.5% 3.98% 4.00% 100.00% 2.9% 3.0% 11 10 100.0% r 15 10.4 3.00% e 2.7% 2.5%

b 7.5 99.80% 2 8 m 11.8 99.9% 2.00% r 2.0% u 1.32%

e 10 s 2.0% r N 1.41% b 99.60% 6 u 1.00%1.5% m 9.6 o 99.8% 0.53% u H N 1 5 4 99.40% 0.00%1.0% 99.7% 1997 1998 1999 2000 0.5% 1.62 0 0.0% 0 99.6% 0.0% 1997 1998 1999 2000 Year 0 0 1997 1998 1999 2000 1997 1998 Year1999 2000 Availability of CV Yearequipment for physics Year Hours of dow ntime caused by CV equip. CV equip.dow ntime / total hours of dow ntime Availability of CV equipment for physics Number of stops caused by CV equip. CV equip.dow ntime / total hours of dow ntime Hours of dow ntime caused by CV equip. 3.5.3 Down Time Hours LEP [9]

4 CONCLUSIONS A 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 to previous statistics. The ST Operation Working Group has set the guidelines for these statistics but only part 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 the physics 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 quality for the LHC.

ACKNOWLEDGEMENTS The creation of this paper was only possible thanks to the commitment of any of the persons who furnished the data on the technical infrastructure operation. In particular we have to thank all the members of the operation working.

REFERENCES [1] M. Batz, ST Divisional Operation Statistics -Design and Production Document, CERN ST-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, CERN 2001 [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

8 [9] R. Principe, J.Kuhnl-Kinel, Performance Report and Improvements in CV Machine Areas