General Safety Instructions determine, for defined fields of activity or defined types of equipment, how Safety Regulations (SR), Safety Plans and Procedures (SP) must be implemented. These General Safety Instructions are usually issued to cover CERN-wide aspects.

  • GSI-C-1

    Prevention and protection measures

    The purpose of this General Safety Instruction is to define the minimum Safety requirements which prevention and protection measures must satisfy in order to ensure the protection of persons from risks to their health and safety arising, or likely to arise, from the effects of hazardous chemical agents that are present at the workplace or used in any CERN activity.

    It applies to any CERN activity involving hazardous chemical agents.

  • GSI-C-2

    Explosive atmospheres

    The purpose of this General Safety Instruction is to define the minimum Safety requirements to ensure the protection of persons from risks to their occupational health and safety arising, or likely to arise, from explosive atmospheres.

    It applies to all CERN activities involving hazardous chemical agents where explosive atmospheres are present or may be present.

  • GSI-C-3

    Monitoring of exposure to hazardous chemical agents in workplace atmospheres

    The purpose of this General Safety Instruction is to define the minimum Safety requirements regarding the monitoring of exposure to hazardous chemical agents in workplace atmospheres.

    It applies to all CERN activities where hazardous chemical agents are present or are likely to be present in workplace atmospheres. 

  • GSI-M-1

    Lifting equipment and accessories

    The purpose of this General Safety Instruction is to define the minimum Safety requirements applying to all lifting equipment and accessories belonging to or hired by CERN or the collaborating institutions, used or intended for use at CERN, and to all associated activities. This General Safety Instruction does not apply to the following: • the structures supporting lifting equipment; • lifts, as defined in General Safety Instruction GSI-M-5 “Lifts”.

  • GSI-M-2

    Standard pressure equipment

    The purpose of this General Safety Instruction is to define the minimum Safety requirements applying to all standard pressure equipment and accessories belonging to or hired by CERN or the collaborating institutions, used or intended for use at CERN, and to all associated activities. This General Safety Instruction does not apply to the following: • fire extinguishers; • pressure equipment used with an open-flame; • heating, ventilation and air conditioning (HVAC) equipment; • cryogenic equipment.

  • GSI-M-4

    Cryogenic equipment

    The purpose of this General Safety Instruction is to define the minimum Safety requirements applying to all cryogenic equipment and accessories belonging to or hired by CERN or the collaborating institutions, used or intended for use at CERN, and to all associated activities.

  • GSI-M-5

    Lifts

    The purpose of this General Safety Instruction is to define the minimum Safety requirements applying to lifts and their safety components used or intended for use at CERN. This General Safety Instruction does apply to the worksite lifts.

  • GSI-SH-1

    Visits on the CERN site

    The purpose of this General Safety Instruction is to define the minimum Safety requirements for all types of visits on the CERN site.

  • GSI-SH-2

    Lone working

    The purpose of this General Safety Instruction is to define the minimum Safety requirements for lone working.

  • GSI-SH-4

    Protection of workers against Noise

    This General Safety Instruction defines the obligations regarding the protection of Workers against the risk that results or may result from exposure to Noise.

  • GSI-SH-5

    Personal Protective Equipment

    The purpose of this General Safety Instruction is to define the minimum requirements regarding the selection, provision, use and maintenance of Personal Protective Equipment (PPE) at CERN.

  • GSI-SO- 1

    DSO - Departmental Safety Officer

    The purpose of this General Safety Instruction is to define the mandate of the Departmental Safety Officer (DSO).

  • GSI-SO- 2

    TSO - Territorial Safety Officer

    The purpose of this General Safety Instruction is to define the mandate of the Territorial Safety Officer (TSO).

  • GSI-SO- 3

    SLP - Safety Linkperson

    The purpose of this General Safety Instruction is to define the mandate of the Safety Contact Person (SLP).

  • GSI-SO- 4

    LEXGLIMOS - Large Experiment Group Leader in Matters of Safety

    The purpose of this General Safety Instruction is to define the the terms of reference of the Large Experiment Group Leader in Matters of Safety (LEXGLIMOS).

  • GSI-SO- 5

    EXSO - Experiment Safety Officer

    The purpose of this General Safety Instruction is to define the mandate of the Safety Officer of an Experience (EXSO).

  • GSI-SO- 6

    SSO - Specialised Safety Officer

    The purpose of this General Safety Instruction is to define the mandate of the Specialized Safety Officer (SSO).

  • GSI-SO- 7

    PSO - Project Safety Officer

    The purpose of this General Safety Instruction is to define the mandate of the Project Safety Officer (PSO).

  • GSI-SO- 8

    RSSO - Radiation Safety Support Officer

    The purpose of this General Safety Instruction is to define the mandate of the Radiation Safety Support Officer (RSSO).

  • GSI-SO- 9

    DSOC - Departmental Safety Officers Committee

    The purpose of this General Safety Instruction is to define the mandate of the Committee of Departmental Delegates for Safety (DSOC).

  • GSI-SO-10

    CSAP - Complex Safety Advisory Panel

    The purpose of this General Safety Instruction is to define the mandate of the Advisory Committee for Complex Safety (CSAP).

  • GSI-SO-11

    SSOC - Specialised Safety Officers Committees

    The purpose of this General Safety Instruction is to define the mandate of the Committees of Specialized Safety Delegates (SSOC).

  • GSI-SO-12

    WS - Workshop Supervisor

    The purpose of this General Safety Instruction is to define the mandate of the Workshop Manager (WS).

  • GSI-SO-13

    Establishment and revision of the CERN Safety Rules

    The purpose of this General Safety Instruction is to define the different types of the CERN Safety Rules and the principles and procedures governing their establishment and revision.

  • GSI-WS-1

    Safety coordination for works and services

    The purpose of this General Safety Instruction is to define the minimum safety requirements for the safety coordination of operations, whether or not managed by CERN, and executed on the CERN site.
    Are excluded from the scope of this General Safety Instruction:

    - design aspects;

    - the technical provisions for the layout and execution of works and services;

    - the organization of medical surveillance according to the risks related to the activity or the place where the operation is carried out.

    This General Safety Instruction is implemented from 1 June 2016.