Installation Risk Assessment - Marstair A2LSYSTEMATCH SMC 15 Technical Manual

Installation of an A2L Split Cold Room System
Prior to installation, it is important to ensure that the location is suitable for this type of system and that the instructions
have been followed with regard to the minimum room volume for the maximum charge weight. This assessment
process is designed to augment a detailed risk assessment not replace it.
The A2L DSEAR Assessment has identified that if a cold room split system (typically less than 3kg refrigerant charge),
is located correctly in accordance with the instructions, then the most likely point of leakage is a flare connection on
the condensing unit, which will be located in free air outside. This will result in Zone 2 NE.
BS EN 60079-10-1 states that this zone may be treated as non-hazardous. Such a zone implies that an explosion, if it
takes place, will have negligible consequences.
The following step by step assessment assumes that the site in which you are working has no specific risks or
hazards. If this is not the case, a full assessment will be required
INSTALLATION
Question
1. Has correct PPE been selected?
2. Are suitable first aid facilities available?
3. Has the electrical supply been suitably isolated?
4. Are hot works required for jointing of the
refrigeration pipework?
5. Are permanent mechanical joints required?
6. Have the flare connections been made to a
suitable standard?
7. Are you competent to carry out brazing tasks?
8. Brazing certificate number
9. Has a suitable fire extinguisher been selected
and a hot work permit been issued?
10. Is the area adequately ventilated?
11. Are the pressure regulators in date?
12. Are the flash back arrestors in date?
13. Has the oxyfuel equipment been leak tested?
14. Has the Oxygen Free Nitrogen equipment been
leak tested?
15. Are all the cylinders upright and secure?
16. Is Oxygen Free Nitrogen purging at the correct
flow rate through the pipework?
17. Has a full shutdown of equipment been
completed upon conclusion of hot works
18. Is a fire watch to be undertaken?
7 – INSTALLATION RISK ASSESSMENT
N/A YES NO Comments
If yes go to question 2
If no stop assessment
If yes go to question 3
If no stop assessment
If yes go to question 4
If no rectify and reassess
If yes go to question 7
If no go to question 5
If yes go to question 20
If no go to question 6
If yes go to question 20
If no rectify and reassess
If yes go to question 8
If no stop assessment
If yes go to question 10
If no stop assessment
If yes go to question 11
If no stop assessment
If yes go to question 12
If no rectify and reassess
If yes go to question 13
If no rectify and reassess
If yes go to question 14
If no rectify and reassess
If yes go to question 15
If no rectify and reassess
If yes go to question 16
If no rectify and reassess
If yes go to question 17
If no rectify and reassess
If yes go to question 18
If no rectify and reassess
If yes go to question 19
If no rectify and reassess
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