Publications

CLEAPART-100 to monitor particle rate deposition in laser cleanrooms

  • I.Tovena-Pecault , Proceeding  ISCC’18, 23-26 September 2018, La Haye, pp 572-577

Particle fallout in cleanrooms is a primary concern for industries manufacturing critical products with surfaces highly susceptible to particulate contamination.  In the frame of the Laser MegaJoule (LMJ), this paper gives the first results of deposited particles measurement around the transport mirrors obtained thanks to a real-time and innovative device: CLEAPART-100.   The main interest of the CLEAPART-100 is that it follows the dynamic behavior of the deposited particles higher than 5 µm with resuspension of part of them.

cleapart100 at ISCC’18

Monitoring des particules déposées en salles propres du laser Mégajoule.

  • I.Tovena-Pecault ,DOI : 10.25576/ASFERA-CFA2018-12551

Particle fallout in cleanrooms is a primary concern for industries manufacturing critical products with surfaces highly susceptible to particulate contamination. Limited research has been conducted to measure the deposited particles in cleanrooms. In the frame of the Laser MegaJoule (LMJ), this paper gives the first results of deposited particles measurement around the transport mirrors obtained thanks to a real-time and innovative device: CLEAPART-100. The CLEAPART-100 detects the same contamination event as optical counters do. The main interest of the CLEAPART-100 is that it follows the dynamic behavior of the deposited particles higher than 5μm with resuspension of part of them.

CFA 30&31 january 2018

Macroparticles monitoring for biocontamination prevention

  • I.Tovena-Pecault 1, M.Thibaudon 2, J.Clertant 3, P.Godefroy 4
  • 1CEA/CESTA/DLP, 2RNSA, 3 ANALYZAIR, 4Winlight System
  • Particulate Science and Technology, DOI: 10.1080/02726351.2017.1346021

 Abstract :This study investigated a potential correlation between deposited macroparticles >5µm and bioaerosols. Bioaerosols were detected using both passive (culture plates) and dynamic sampling (biocollectors). Bioaerosols were then revealed visually on culture plates after incubation and counted in colony forming unit (CFU)/cm2. Macroparticles were counted on line by CLEAPART-100 (patent CEA – Aix Marseille University – Winlight System). It enables continuous monitoring of the deposit of macroparticles on surfaces. We have shown that those macroparticles could be strongly correlated to viable particle measurements (bacteria and mould) after dynamic sampling by biocollectors. As viable particle measurements require an incubation period of at least 48 hours, it is easy to understand the advantage in continuous macroparticle done by CLEAPART-100. CLEAPART-100 is therefore an instrument which enables the alert to be raised in relation to any contamination or biocontamination events.

Volatile organic compound and semivolatile organic compound outgassing rates for ethylene propylene diene monomer and fluoropolymer seals

  • I.Tovena-Pecault 1
  • 1CEA/CESTA/DLP
  • Opt. Eng. 56(11), 115108 (2017), doi: 10.1117/1.OE.56.11.115108.
    Abstract : High-power laser facilities, such as Laser MegaJoule, are currently being operated for inertial confinement fusion experiments. Emission of volatile organic compounds (VOC) and moreover semivolatile organic compounds (SVOCs) from seals in laser environment is of tremendous importance for the optics lifetime and laser performance. That is why all the seals were screening in the same conditions: 48 h at 30°C and three successive cycle of 1.5 h at 50°C. This paper focuses on the qualification test performed on three seals: two ethylene propylene diene monomer (EPDM) and one fluoropolymer (FPM). It is shown that the molded and the extruded EPDM do not outgas the same amount neither the same molecules whereas EPDM and FPM outgas nearly the same level of phthalates. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.OE.56.11.115108]
  • OE-170681_online

Corrélation entre les macroparticules et la biocontamination

  • I.Tovena-Pecault 1, M.Thibaudon 2, J.Clertant 3, P.Godefroy 4
  • 1CEA/CESTA/DLP, 2RNSA, 3 ANALYZAIR, 4Winlight System
  • Salles propres n°107 P52-58
    Abstract :Le suivi des macroparticules (de taille supérieure à 5 µm) est une nécesité récurrente dans de nombreuses industries. Or, plusieurs études semblent corréler les concentrations en bioaérosols (ou particules viables)et en particules, que ce soit en environnement contrôlé ou clos. Celle-ci s’intéresse plus particulièrement aux macroparticules sédimentées obtenues en ligne grâce à un système de comptage bien particulier, le CLEAPART-100.
  • Salles propres n107_P52-58

Qualification testing of an innovative system for monitoring particle contamination fallout

  • I.TOVENA-PECAULT1, P.GODEFROY2, L.ESCOUBAS3
  • 1CEA CESTA, Bât.692, 33116 LE BARP
  • 2Winlight System, 135 Rue Benjamin Franklin, ZA Saint Martin, 84120 PERTUIS,
  • 3 Aix-Marseille University – IM2NP, CNRS (UMR 7334), France
  • Sensors and Actuators A 253 (2017) 181–187
  • Abstract :Particle fallout in cleanrooms is a primary concern for industries manufacturing critical products with surfaces highly susceptible to particulate contamination. Limited research has been conducted to measure the deposited particles in cleanroom. In the frame of the ISO 14644-3, this paper compares the traditional technique for particle fallout measurements using witness plates to a real-time and in situ measurement done by an innovative device: CLEAPART-100.  The CLEAPART-100 detects the same contamination event as optical counters detect. The comparison with the settle plates observed under a microscope shows the loss of particles using that indirect measurement which is unacceptable for an accurate risk analysis assessment
  • Sensors and actuators A253

A new device for measuring particle deposition rate

  • Isabelle TOVENA-PECAULT
  • CEA-CESTA, Bat.692, 33114 Le Barp in Clean Air and Containment Review 28, October 2016
  • Abstract :Particle deposition in cleanrooms is a primary concern for industries manufacturing critical products with surfaces highly susceptible to particulate contamination. Limited research has been conducted to measure the deposited particles in cleanrooms. In the context of ISO 14644-3:2005, this paper describes the measurement of particle deposition in real-time by an innovative device: CLEAPART-100. CLEAPART-100 detects the same contamination events that are detected by airborne particle counters.
  • CACR 28 p7-10

New classification standards for assessing the suitability of Equipment and materials for use in cleanrooms : ISO 14644-14&15 

  • Isabelle TOVENA-PECAULT1, Delphine FAYE 2
  • 1 CEA-CESTA, Bat.692, 33114 Le Barp,  2CNES, 18 avenue Edouard Belin 31401 Toulouse Cedex 9 in Clean Air and Containment Review 27, July 2016
  • Abstract :One of the main difficulty of the cleanroom manager is to accept or not this material or this equipment in his cleanroom without any risk for his production. In the absence of any international standard, different industries have chosen their own specifications (space industry and lasers). This paper gives an overview of the two new international standards for assessing the suitability of equipment and materials for use in cleanroom, considering either the particulate or the chemical contamination, respectively ISO 14644-14 and ISO 14644-15.
  • CACR27_P8-12

Interest for tracking deposited particles against the risk of biocontamination ( presentation at European Aerobiology Symposium 18-22 July 2016)

  • I.Tovena-Pecault 1, M.Thibaudon 2, J.Clertant 3, P.Godefroy 4
  • 1CEA/CESTA/DLP, 2RNSA, 3 ANALYZAIR, 4Winlight System

Maîtriser les risques industriels de contamination

  • I.Tovena-Pecault
  • La maîtrise des contaminations est devenue un enjeu stratégique pour les entreprises de hautes technologies et le domaine de la recherche et développement. Les entreprises investissent dans les salles propres et les environnements maîtrisés apparentés, mais ces investissements restent vains s’il n’y a pas une prise de conscience collective des dangers des contaminants avec la mise en place d’un management système de maîtrise des contaminations. L’auteur propose une analyse et présente les différents outils de prévention des risques de contamination en salles propres, destinés au secteur des entreprises de haute-technologie (automobile, aérospatial, optique, laser, microélectronique, nanotechnologie…), produisant des équipements et sensibles aux contaminants.
    L’ouvrage s’appuie sur les standards normatifs internationaux actuels dans le domaine des salles propres et présente les standards industriels par secteurs ; il favorise une démarche préventive et fait le point sur les différents outils de maîtrise de la contamination ; il expose les nouveaux enjeux écologiques, énergétiques, de mondialisation et donc de concurrence et de productivité.
  • => Maitriser les risques industriels de contaminations
  • Salles propres et zones à environnement contrôlé – Conception, réalisation et exploitation, I.Tovena-Pecault
  • Maîtriser la contamination devient aujourd’hui un enjeu majeur pour un nombre de plus en plus important de secteurs d’activité, afin de protéger, ensemble ou individuellement, toutes les parties concernées : le produit, l’opérateur, le consommateur, l’environnement… Dans une recherche d’excellence, de productivité, de qualité et de fiabilité accrues, un nouveau secteur économique est né : L’industrie des salles propres ou des zones à environnement contrôlé (ZEC). L’auteur aborde tous les aspects relatifs à la maîtrise d’un environnement, sans poussière ni bactérie, et au travers de cet ouvrage : donne les définitions des différents types et formes de contamination (particulaire, moléculaire et biocontamination) ; passe en revue toutes les règles de L’art en matière de réalisation des “salles blanches” ; propose des méthodes de prélèvement et de contrôle normalisées, pour permettre les mesurages des zones à environnement contrôlé et leur exploitation ; détaille “quoi contrôler, quand et comment”, puis fait L’analyse des résultats pour ainsi se donner les moyens d’une maintenance prédictive. Très complet, cet ouvrage s’adresse à l’ensemble des acteurs : responsable de la fonction transverse propreté, direction, encadrement, opérateurs…, sensibles aux contaminants.
  • =>Salles propres et zones à environnement contrôlé : Conception, réalisation et exploitation

CONFERENCES

CONGRES FRANCAIS des AEROSOLS, 30&31 January 2018

CLEANSENSE was present at the CFA organised by the French association on aerosol research and study, in Paris ( 30&31 January 2018)

CONTAMINEXPO/CONTAMINEXPERT the place where to be from 28 to 30 March 2017.

Every two years, all the professionals in the field of cleanrooms and the control of particulate, chemical and biological contaminations meet in Paris at the exhibition CONTAMINEXPO and the congress CONTAMINEXPERT organized by ASPEC (French association for the prevention and study of contaminations) . It is the opportunity to see at CONTAMINEXPO the latest developments in filtration, cleanrooms and other related controlled environments, contamination metrology and monitoring, confinement, decontamination and/or sterilization processes and products. The field of cleanrooms remains an emerging sector of activity where innovation is sustained. In particular, innovative products for cleanroom sterilization (PHILEAS), vacuum cleaning for cleanrooms (CONFORMAT) or monitoring of cleanrooms with new real time device for deposited macroparticles>5μm (WINLIGHT SYSTEM, Special Jury Award at CONTAMINEXPO 2015 for the CLEAPART-100 -Patent with CEA and CNRS-See the picture).

The fist day of CONTAMINEXPERT was dedicated to the air and surface in cleanroms whereas the second day was focused on biocontamination and the last day treated the Heath facilities. The quality of the conferences testifies to the sustained scientific activity carried out in the laboratories in order to make the cleanrooms more reliable and to guarantee a better control of contaminations whether they are airborne, viable and cultivable or not, surface or chemical contaminants. Finally, the cleanroom industry is framed by an international standardization that is absolutely necessary (ISO 14644-1 to nearly 17 today!), national or international regulations and voluntary experts to explain, train staff, support professionals in the field and help them to innovate. I.Tovena Pecault presents the study showing the correlation between macroparticules measured by the CLEAPART-100 and bacteria+moulds collected and incubated on TSA plates and biocollectors.

CLEANSENSE® is present at European Symposium on Aerobiology from 18 to 22 July 2016.

The 6th ESA, the second under the aegis of the European Aerobiology Society EAS, will welcome you from 2016 July 18th to 22nd in Lyon, France.

This Symposium will be organized by the RNSA and the AFEDA with the support of different associations dedicated to Air quality. The organizing Committee wishes that many of you will join the Symposium.

The main themes will be:

  • General aerobiology
  • Phenology
  • Health impact (including an allergy day)
  • Moulds outdoors and indoor with the participation of different partners
  • Ragweed satellite symposium in partnership with the IRS (International Ragweed Society) and a satellite symposium organized by the COST SMARTER.