Dry Ice Cleaning for Electrical Switchgear & Substation Equipment
Non-abrasive, residue-free on-site cleaning for LV, MV and HV switchgear — safe on live and de-energised equipment. Available nationwide across South Africa.
A Cleaner Solution for Critical Electrical Equipment
Contamination is one of the leading causes of electrical switchgear failure. Dust, carbon deposits, oil residue, moisture, and airborne particles accumulate inside panels and substations over time — degrading insulation, reducing clearance distances, and creating the conditions for tracking, flashover, and unplanned outages.
Traditional cleaning methods present their own challenges. Compressed air redistributes contamination rather than removing it. Chemical solvents leave residue and introduce moisture. Manual cleaning with cloths and brushes is time-consuming, often incomplete, and carries the risk of mechanical damage to sensitive components. And most conventional methods require the equipment to be fully de-energised and isolated — adding planned outage time and operational disruption.
Dry ice cleaning solves all of these problems in a single, efficient process.
MSD has been offering professional dry ice cleaning services since 2012 — making us one of the most experienced providers of this specialist service in the South African electrical sector. Our mobile service operates nationally, bringing the equipment and expertise directly to your site.
How Dry Ice Cleaning Works
Dry ice cleaning — also known as CO2 blasting — uses solid carbon dioxide pellets accelerated at high velocity through a specialist blasting unit. On contact with the surface being cleaned, three simultaneous processes occur:
Kinetic impact dislodges surface contamination — dust, carbon tracking, grease, and other deposits — from the substrate.
Thermal shock causes the contamination layer to contract rapidly on contact with the extremely cold dry ice pellets (approximately -78°C), breaking its bond with the underlying surface and making it easier to remove.
Sublimation is the defining characteristic of dry ice cleaning. Unlike water or solvent-based cleaning media, dry ice converts instantly from solid to gas on impact — leaving zero residue behind. There is no secondary waste stream, no moisture introduction, and no chemical contamination.
The result is a thoroughly cleaned surface with no damage to the substrate, no residue, and no additional drying or recovery time required.
Why Dry Ice Cleaning Is the Right Choice for Electrical Equipment
- No residue — ever. Dry ice sublimates completely on contact. There is nothing left behind — no moisture, no solvent, no secondary contamination.
- Safe on live and de-energised equipment. MSD’s dry ice cleaning service can be performed on both energised and isolated switchgear, reducing or eliminating the need for planned outages in many situations.
- Non-abrasive and non-conductive. Dry ice is gentle enough for sensitive electrical components, busbars, insulators, and relay equipment without risk of mechanical damage or electrical interference.
- No disassembly required. In most cases, panels and enclosures can be cleaned in place — significantly reducing the time and cost compared to strip-down cleaning methods.
- Removes stubborn contamination. Carbon tracking, oil deposits, dust accumulation, and moisture-related contamination are all effectively removed in a single pass.
- Faster turnaround. Without the need for drying time, chemical neutralisation, or reassembly after disassembly, dry ice cleaning is significantly faster than alternative methods.
- Environmentally responsible. CO2 used in dry ice production is a by-product of existing industrial processes. There are no additional chemicals, solvents, or waste materials generated by the cleaning process itself.
- Supports compliance and maintenance records. Dry ice cleaning is a documented service — MSD issues a report after each visit, supporting your maintenance records and compliance obligations.
Equipment & Applications
MSD’s dry ice cleaning service covers a wide range of electrical infrastructure, including:
Switchgear & Substations
- Low voltage (LV) switchgear panels and MCCs
- Medium voltage (MV) switchgear — including Tamco, ABB, Schneider, Siemens, and all other brands
- High voltage (HV) substation equipment
- Ring main units and distribution kiosks
- Transformer bays and cable termination chambers
Electrical Plant & Infrastructure
- Motor control centres (MCCs)
- Busbars and busbar chambers
- Control and relay panels
- Battery rooms and UPS systems
- Generator control panels
- Distribution boards
Industrial & Process Equipment
- Industrial electrical enclosures in dusty or contaminated environments
- Food-grade environments where chemical cleaning is not permissible
- Mining and heavy industrial electrical plant
If your equipment is not listed above, contact us — our team will assess whether dry ice cleaning is appropriate for your specific application.
Cleaning Without Switching Off
One of the most significant advantages of dry ice cleaning for electrical operators is the ability to clean live, energised equipment without de-energising and isolating the installation.
For facilities where planned outages are costly, operationally disruptive, or technically difficult to arrange — a data centre, a hospital, a continuous production facility, or a mine — the ability to clean critical switchgear without switching it off is a meaningful operational benefit.
MSD’s technicians are trained and equipped to carry out dry ice cleaning on live equipment safely, in accordance with all relevant South African occupational health and safety requirements. All live work is risk-assessed and carried out under controlled conditions with appropriate PPE and safety protocols in place.
Where de-energisation is preferred or required, MSD can coordinate the cleaning visit to align with your planned maintenance window.
Is It Time to Clean Your Switchgear?
Dry ice cleaning is recommended in the following situations:
- As part of a scheduled maintenance programme — combined with or following a full switchgear service visit, to leave the installation in the best possible condition
- After a fault or flashover event — to remove carbon tracking and contamination deposits before the equipment is returned to service
- In high-contamination environments — mining, heavy industry, dusty or humid locations where contamination accumulates rapidly
- Before a switchgear inspection or compliance audit — ensuring the installation presents well and that contamination is not masking underlying issues
- When visual inspection reveals tracking, discolouration, or significant dust accumulation — particularly in busbar chambers, cable termination areas, and around primary contacts
- As a standalone annual service for installations in relatively clean environments where full mechanical servicing is not yet due
Book a Dry Ice Cleaning Visit
Whether you need a standalone clean, a post-fault decontamination, or dry ice cleaning as part of a broader maintenance programme — MSD’s team is ready to assist. Contact us to discuss your requirements or request a quotation.
Phone: 011 298 1800
Email: reception@malaysianswitchgear.co.za