Solvent machine cleaning -

Risk analysis

1/22L.Bardo - PH-CMX 04 December 2015

Content

1. Description

Equipment & Location

Vertrel XF

2. Continuous preventive and protective measures

3. Critical situations – Risk Analysis

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DESC

RIPT

ION

Equipment & Location

4/22

DESC

RIPT

ION

VERTREL XF

Technical measures

5/22

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EASU

RES - Adapt the ventilation

Cavern Volume = 2000 m3 air. Only fresh air pulsed : Flow rate= 10 000 m3/hour – (the air is warmed up)

+ “Brassage” = 30 000 m3/hour pulsing

= 40 000 m3/hour pulsing

Natural extraction through the pit Air renewed every 12 minutes – 5 renewal/hour

In case of emergency: Extraction (“désenfumage”) 20 000 m3/hour – test will be drawn up by Frederic Juban and he will also give an explanation on how to activate the system to CMS collaborators (To be completed: 16 5000, Antonio, Maf, Sandro,) -> to be planned

Install aerolic connection on the “ desenfumage” system to collect the vapours at the source-> to be done by EN-CV

If some areas seems not to be properly ventilated, extractors can be added –> extractors are ordered

Technical measures

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- Portable ODH always worn by personnel intervening in USC55 and UXC55 -> the ODH detector triggered in presence of VERTREL XF

- Move one of the two ODH sensors located under the cold box -> in discussion

- Retention tank under the condenser -> check if the CMS retention tank are big enough

- Retention tank included in the solvent machine -> retention > 1m3 once installed

- CO2 Fire extinguishers -> check that a sufficient amount of fire extinguisher are present on site.

- Obstructing plate -> Ordered

- Absorption kit already in USC55 level -2 S3 -> check if it is compatible with the product used

- Mobile shower -> to be ordered? + Retention for rinsing water

- Rinse eye already in USC55 level -2 S3 inside the absorption kit -> keep the absorption cabinet open

Organisational measures

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- Fire brigade will be informed about the intervention and the risks present (provide the product MSDS) -> organise a visit

- Access limited -> put barriers level-1 and level-2 with panel indicating the reason, duration, contact person

- Check if shifters will be present during nights and weekends. If no check with the Fire Brigade if they can patrol the area.

Documentation

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- MSDS close to the tank

- Tank identified with the name of the product and pictograms

- Instruction what to do in case of spill -> to be adapted

- Instruction what to do in case of projection -> already existing

Training

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- All persons intervening have followed the appropriate safety trainings and have the access to work in the USC55 cavern -> Email sent

- Specific training on site -> organise a Safety briefing for people intervening to get familiar with the premises and safety equipment and procedure

- Chemical awareness on SIR online will be followed by all people intervening

- List among the people intervening which one are First-aider -> list of people intervening

- List among the people intervening which one followed the fire extinguisher training courses -> list of people intervening

- At least 1 chemist will always be on site during working hours

Scenarios

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CRIT

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1. Solvent Machine Leak in USC55 – level -2- S3

2. Solvent Machine transport in PM54 lift

3. Leak during the disconnection of the solvent Machine from the cold box

4. Small like of a pipe/equipment during the running

5. Power cut

Thank you for your attention