confined space pres

8/11/2019 Confined Space Pres

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QHSSE01 & 02 Feb. 2005

PETIT-COURONNE


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OSD/326 01&02/02/2005

NEW YELLOWGUIDE

PRESENTATION

CONFINED SPACE ENTRY


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DEFINITION

Confined space is a fully or partial enclosed space where there isa risk of serious injury from hazardous substances or conditionswithin the confined space.

A confined space entry (CSE) means not only complete bodyentry, but also inserting a head into pipe ends



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Group standards and requirements

HEMP shall be applied :

Identification of the hazards

Risks assessment

Detailed analysis of the hazards (PTW + JHA)

Description of the necessary controls andrecovery measures

The alternatives to entering the space have been considered

A rescue plan shall be prepared and implemented for each CSE


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MANAGEMENT SYSTEM ObjectivesEvery effort should be made to minimise the need of CSE

E.g. : use of robots, apply methods such as ultrasonics

Responsability and competences

CSE is considered to be a HSE critical activity

Planning, procedures and HEMP

Rescue plan

Monitoring and audit

Management review


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CONFINED SPACE HAZARDS

Oxygen deficiency (less than 20 %) Oxygen enrichment (more than 21,5 %)

Fire and explosion (CSE not allowed if the flammable concentration isgreater than 10 % LFL)

Toxic hazards (action has be taken if more than 50 % OEL) Corrosive hazards

Physical hazards (noise, thermal stress, electric shock, ionising radiation) Unsafe conditions (restricted working space, poor visibility )

Psychological issues


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CONTROLS


Permit to work + CS certificate + JHA Mechanical isolation (disconnecting, blinds )

Electrical / hydraulic lock out and tag out

Clearance of process materials (gas freeing) Ventilation

Testing and monitoring

Control of ignition sources Control of radiation source


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Lighting and electrical equipment and tools (intrinsically safe) Internal combustion engine and gas cylinders (outside the cs)

Personal protective equipment

Access and escape Attendants (communication established before entry)

Fitness to work


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ENTRY CRITERIA AND SPECIFIC CONTROLS


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EQUIPMENT AND RESSOURCES

Inert gas supply (ensure that inert atmosphere is maintained) Breathing air and communication system (requirements list) Other equipment (access )

People

- Number minimum in the confined space

- Console operator (monitor and record the conditions)

-Attendant (breathing air supplies, line of communication)should be

wearing a full inert gas suit and breathing apparatus, and be ready torespond in an emergency

- Supervisor and one or more assistants


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MANAGING SPECIALIST CONTRACTORS

Comprehensive safety and operating manual covering theprocedures and instructions needed to perform inert gas entrywork

Training certificate for the persons selected for the work

Confirmation that all selected persons are qualified (FTW)

Written report of similar work undertaken Incident reporting procedures and safety records

The specialist contractor should provide :


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confined space pres

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