CERN 18-19 Jan 2006 Specific safety Issues for 2006 compared to 2004 P. Cennini AB Safety Requirement in case the Installation activities are going on.

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Presentation transcript:

CERN Jan 2006 Specific safety Issues for 2006 compared to 2004 P. Cennini AB Safety Requirement in case the Installation activities are going on in parallel with the Commissioning. Safety Requirement in case the Installation activities are going on in parallel with the Commissioning. Ionizing Radiation Hazards Ionizing Radiation Hazards Oxygen Deficiency Hazards Oxygen Deficiency Hazards Electrical Hazards Electrical Hazards Transport-Handling Hazards Transport-Handling Hazards

CERN Jan 2006 Safety Requirement in case the Installation activities are going on in parallel with the Commissioning. P. Cennini AB This situation is present in the PS Tunnel where the Consolidation Program is taking place in parallel with the LEIR Commissioning. During this phase there are not Ionizing Radiation hazards, on the contrary the Electrical hazards are present because some Electrical Elements in the Inflector Zone must stay ON. During this phase there are not Ionizing Radiation hazards, on the contrary the Electrical hazards are present because some Electrical Elements in the Inflector Zone must stay ON. Recently an effort to install the protecting covers on the electrical elements has been done. Unfortunately not all equipments are in agreement with the safety requirements (IP2) giving the right to NON PROFESSIONAL INTERVENERS to access the area. Recently an effort to install the protecting covers on the electrical elements has been done. Unfortunately not all equipments are in agreement with the safety requirements (IP2) giving the right to NON PROFESSIONAL INTERVENERS to access the area. Under this conditions the access must be restricted to persons having a recognized “Habilitation Electrique”. If is not the case, a series of Compensatory Measures must be taken. Under this conditions the access must be restricted to persons having a recognized “Habilitation Electrique”. If is not the case, a series of Compensatory Measures must be taken.

CERN Jan 2006 Safety Requirement in case the Installation activities are going on in parallel with the Commissioning. P. Cennini AB The Compensatory Measures implemented in the Inflector Zone to guarantee the safety during any non electrical intervention like transport and handling of magnets, connection of the vacuum line, survey, etc. are: Optimized scheduling to minimize the overlap between Installation and Commissioning. Optimized scheduling to minimize the overlap between Installation and Commissioning. Direct information of the persons working in the area. Direct information of the persons working in the area. Notification at the access doors informing on the activities going on. Notification at the access doors informing on the activities going on. Replacement of the locks giving access to the Inflector Zone. Replacement of the locks giving access to the Inflector Zone. Definition of a limited list of persons having the right to take a key in MCR. Definition of a limited list of persons having the right to take a key in MCR. Warning Panels at the entrance (PS ring and Inflector Zone). Warning Panels at the entrance (PS ring and Inflector Zone). Blinking devices in the vicinity of the elements under power. Blinking devices in the vicinity of the elements under power. Clear definition of the forbidden area whit barriers, chains and other visible signs. Clear definition of the forbidden area whit barriers, chains and other visible signs.

CERN Jan 2006 Ionizing Radiation Hazards PS Bridge Closure P. Cennini AB Following the estimation made by SC-RP, the access to the “PS Bridge” between buildings 150 and 151, will be suppressed during the runs. Following the estimation made by SC-RP, the access to the “PS Bridge” between buildings 150 and 151, will be suppressed during the runs. Two new Doors will be installed for this purpose. Two new Doors will be installed for this purpose. In case of a full beam loss in the sector under the bridge, the estimated dose rate in this area would be 6 mSv/super cycle (H >> 100 mSv/h). In case of a full beam loss in the sector under the bridge, the estimated dose rate in this area would be 6 mSv/super cycle (H >> 100 mSv/h). According with the regulations an area where dose rate can potentially exceed 100 mSv/h must be classified as "Forbidden Area" and access must be physically impossible. According with the regulations an area where dose rate can potentially exceed 100 mSv/h must be classified as "Forbidden Area" and access must be physically impossible.

CERN Jan 2006 Ionizing Radiation Hazards Operational Dosimeters P. Cennini AB Following the Memorandum from SC-RP (EDMS ) starting from January 2006, the (good old) pen-dosimeters will be no more available at the Accelerator entrances. Following the Memorandum from SC-RP (EDMS ) starting from January 2006, the (good old) pen-dosimeters will be no more available at the Accelerator entrances. They are replaced by Electronic Operational Dosimeters equipped with the buzzing alert and the direct reading of the received dose. They are replaced by Electronic Operational Dosimeters equipped with the buzzing alert and the direct reading of the received dose. As in the past, wearing an Operational Dosimeter to enter in a Controlled Area is mandatory. As in the past, wearing an Operational Dosimeter to enter in a Controlled Area is mandatory. The procedure to obtain those devices is given at the entrances of the controlled areas. The procedure to obtain those devices is given at the entrances of the controlled areas.

CERN Jan 2006 Oxygen Deficiency Hazards P. Cennini AB During the commissioning of the Cryogenic line in the LHC Sector 8, the compensatory safety measures related to Oxygen Deficiency Hazards (ODH) were applied in the SPS-LHC Transfer Tunnel (TI8-TI12) and in the CNGS Hadrons Stop area. During the commissioning of the Cryogenic line in the LHC Sector 8, the compensatory safety measures related to Oxygen Deficiency Hazards (ODH) were applied in the SPS-LHC Transfer Tunnel (TI8-TI12) and in the CNGS Hadrons Stop area. These additional measures were: Level 4 Course passed (Web SC Site) and the need to wear Individual Oxygen Meter. These additional measures were: Level 4 Course passed (Web SC Site) and the need to wear Individual Oxygen Meter. In 2006 the needs for the Safety infrastructure like doors, fixed Oxygen meters, warnings, training and access procedures in all non LHC tunnels where the risks exist, will be finalized. In 2006 the needs for the Safety infrastructure like doors, fixed Oxygen meters, warnings, training and access procedures in all non LHC tunnels where the risks exist, will be finalized.

CERN Jan 2006 Electrical Hazards P. Cennini AB In general, the access for “non electrical experts” to areas where there are Electrical Power Equipments, is allowed under the following conditions: The Equipments are OFF & Locked-Out (consignés) The Equipments are OFF & Locked-Out (consignés) In case the Equipments must stay ON or are not formally Locked-Out They must be protected by “covers” or be housed in cabinets according with the safety standards (IP2). They must be protected by “covers” or be housed in cabinets according with the safety standards (IP2). If this is not the case, the interveners should have the appropriate permit (habilitation electrique) or be accompanied by a person in posses of this document. If this is not the case, the interveners should have the appropriate permit (habilitation electrique) or be accompanied by a person in posses of this document. The actual situation requires a training campaign to deliver the permits. The actual situation requires a training campaign to deliver the permits. The solution of this problem is under study in the Safety Commission. The solution of this problem is under study in the Safety Commission.

CERN Jan 2006 Transport-Handling Hazards P. Cennini AB In 2005 a person lost his life during a Transport-Handling operation. In 2005 a person lost his life during a Transport-Handling operation. We must be conscious that simple, normal, “de routine” operations could generate serious accidents. Together with the Department in charge of the Transport-Handling a series of preventive measures have been envisaged. Together with the Department in charge of the Transport-Handling a series of preventive measures have been envisaged. The “users” are requested to provide dedicated areas reserved only for the loading/unloading and keep free the corridors reserved for the movement of suspended loads. The “users” are requested to provide dedicated areas reserved only for the loading/unloading and keep free the corridors reserved for the movement of suspended loads. It is reminded that pass with suspended loads on top of occupied laboratories or barracks is strictly forbidden. It is reminded that pass with suspended loads on top of occupied laboratories or barracks is strictly forbidden. The crane operator has the duty and the right to ask the evacuation of an area or a barrack. The crane operator has the duty and the right to ask the evacuation of an area or a barrack. Your collaboration is needed to improve the safety