Safety considerations for our project and guidelines followed.
The development of PARSE entailed following rigorous safety procedures. The team worked in a level I biosafety lab. Lab coats and gloves were worn as standard. Eye protection was used as needed, where a risk was identified. Members of the team underwent extensive training before commencing wet-lab experiments, and had easy access to the Perak team (including first aiders), experienced advisors, and PIs in case of any safety concerns. All laboratory waste was disposed of in line with University guidelines, with specific training on this aspect completed prior to lab work began.
List of trainings completed:
To make the project safer, all wet-lab experiments were conceptualised only with non-pathogenic strains of E. coli (DH5-alpha and Lemo BL21) as chassis organisms, which are both Risk Group 1 organisms. Additionally, all the parts belong to the White List other than the growth slower genes, which iGEM check-in forms have been submitted for. None of them are inherently hazardous to humans, animals or plants.
PPE was strictly followed when handling hazardous substances such as Virkon, Rubidium Chloride (\(\text{RbCl}\)) and several antibiotics. Non-carcinogenic gel stains Midori Green and SYBR Safe were used instead of ethidium bromide, and highly flammable compounds were stored separately in a suitable cabinet.
PARSE followed national regulations outlined by the Genetically Modified Organisms (Contained Use) Regulations of 2014. The team also filled out Control of Substances Hazardous to Health (COSHH) assessments as a requirement for wet-lab experiments, which were then reviewed by the project's PI.
Careful considerations have been taken into account in order to minimise the risks involved with the design and manufacturing of the modular, multiplexed turbidostat reactor system. The team has ensured that the system is being built in accordance with the health and safety guidelines and standards set by the University of Sheffield. In particular, throughout the build process the team is making certain that manufacturing and electrical equipment are not used without proper training, and if required, only with the guidance or supervision of experienced University technicians.
In addition the team has completed safety training for all tools used during manufacturing as required by the University's iForge Makerspace (for further information see https://training.iforge.shef.ac.uk/). There are several risks involved in the manufacturing of the reactor system. The following risk assessment has been produced for such risks:
Hazard | What harm might occur and to whom? | Existing control measures | Risk Rating (with current controls) | ||
L | S | RR | |||
Soldering | Burns from soldering iron or solder leading to injury | - Limiting equipment access to experienced members | 2 | 2 | L |
Soldering | Property damage / Fire | - Limiting equipment access to experienced members - Removing all flammable material from workstation before soldering | 1 | 2 | L |
Soldering | Breathing in / Coming into contact with harmful materials | - Requiring use of goggles when soldering - Requiring use of face mask when soldering | 2 | 3 | M |
3D Printing | Burns from the heat exerted by the printer | - Limiting equipment access to experienced members - No direct contact with the printer during operation | 1 | 1 | L |
3D Printing | Breathing in / Coming into contact with harmful materials | - Using enclosures for 3D printers and ventilation to capture chemical emissions | 1 | 3 | L |
Assembly of Electrical Components | Electrocution | - Supervision of experienced, trained personnel if required | 3 | 4 | M |
Assembly of Mechanical Components | Injury through the use of hand and power tools | - Supervision of experienced, trained personnel if required | 3 | 4 | M |
Likelihood (L) | Guide Description | Severity (S) | Guide Description | |
5 | Very likely / Imminent | 5 | Catastrophic | |
4 | Probable | 4 | Major | |
3 | Possible | 3 | Moderate | |
2 | Unlikely | 2 | Minor | |
1 | Rare | 1 | Very Minor |
Severity (s) | ||||||
Likelihood (L) | 1 | 2 | 3 | 4 | 5 | |
5 | 5 | 10 | 15 | 20 | 25 | |
4 | 4 | 8 | 12 | 16 | 20 | |
3 | 3 | 6 | 9 | 12 | 15 | |
2 | 2 | 4 | 6 | 8 | 10 | |
1 | 1 | 2 | 3 | 4 | 5 |
Risk Rating (RR) | Action |
High Risk | Stop the task/activity until controls can be put into place to reduce the risk to an acceptable level |
Medium Risk | Apply additional precautions |
Low Risk | No further action |