Pharmaceutical manufacturing involves a wide range of substances, processes and equipment that can present risks to workers if something goes wrong. Chemicals may be used during formulation, cleaning, laboratory testing, manufacturing, maintenance and waste handling. Some substances can cause serious injury if they come into contact with the skin or eyes, making immediate access to suitable emergency washing equipment an important part of workplace safety.
An emergency drench shower and eyewash system is designed to provide rapid flushing following accidental exposure. For pharmaceutical manufacturers, however, selecting this equipment is not simply a matter of installing a shower and connecting it to the nearest water supply. The system needs to be considered as part of the site's risk assessment, emergency procedures, water system design and ongoing maintenance arrangements.
The Health and Safety Executive (HSE) requires employers to assess and control exposure to substances hazardous to health under the Control of Substances Hazardous to Health (COSHH) Regulations. Emergency arrangements should also consider foreseeable incidents involving hazardous substances.
Why emergency showers are important in pharmaceutical manufacturing
Pharmaceutical production can involve acids, alkalis, solvents, cleaning chemicals, disinfectants, active pharmaceutical ingredients and other substances requiring controlled handling. Exposure may occur through splashing, leaks, equipment failure, incorrect transfer procedures or maintenance activities.
The eyes and skin can be particularly vulnerable. A small splash to the face can require immediate irrigation, while a larger spill on clothing or the body may require a full drench shower.
Emergency equipment should therefore be positioned according to the hazards identified in the COSHH assessment rather than simply being placed where it is convenient to install. HSE guidance emphasises the importance of suitable washing facilities in relation to the type and level of exposure.
For a manufacturing site, this can mean providing different arrangements around chemical handling areas, laboratories, production rooms, preparation areas, cleaning stations, chemical stores and maintenance locations.
What is an emergency drench shower?
An emergency drench shower is a high-flow safety device designed to rapidly flush hazardous substances from a person's body following an accident. It is not intended to replace normal workplace showers or personal hygiene facilities.
The shower needs to be readily accessible when an incident occurs. If an operator has to travel through several rooms, open doors or search for the equipment, valuable time can be lost.
The system should also be straightforward to activate. In an emergency, a person may be distressed, have impaired vision or be unable to use complicated controls. A suitable activation arrangement allows the user to begin flushing quickly while assistance is summoned.
Water delivery is another important engineering consideration. HSE guidance for emergency washing equipment highlights the need for sufficient flow and duration, with high-volume, low-pressure delivery to minimise the possibility of further injury. The exact requirements should be established from the applicable equipment standard, risk assessment and manufacturer's specification rather than assuming that an ordinary hose or shower connection is adequate.
Why eyewash provision matters
An eyewash unit serves a different purpose from a full-body drench shower. It is intended to provide immediate irrigation where hazardous material has entered or contacted the eyes.
In pharmaceutical laboratories and production environments, eyewash equipment may be required close to activities involving chemicals, reagents, cleaning products or other substances that could cause eye injury.
The current UK standard for plumbed-in eyewash units is BS EN 15154-2:2025. BSI states that the standard covers performance, installation, adjustment, marking and information relating to plumbed-in eyewash units connected to the water supply.
Where a plumbed system is not suitable, non-plumbed emergency eyewash equipment may also be considered. BS EN 15154-4 covers non-plumbed-in emergency safety eyewash units intended to provide immediate primary flushing following eye exposure to harmful substances.
The correct choice depends on the risk assessment, location, water availability, operating environment and site procedures.
Water temperature is a critical consideration
One of the less obvious engineering issues with an emergency shower is water temperature.
Emergency equipment may need to remain available throughout the year, including during periods when incoming mains water is particularly cold. Water that is excessively cold can make prolonged flushing difficult and may discourage a casualty from remaining under the shower for the necessary period.
Conversely, water must not be delivered at a temperature that could cause thermal injury.
This is where a properly designed emergency shower water-heating system can be valuable. A dedicated instantaneous electric water heater can provide controlled tepid water without requiring a large storage cylinder dedicated to the emergency shower.
Tankless Water Solutions Ltd supplies emergency drench shower heating solutions using instantaneous electric water-heating technology, including systems designed for emergency shower applications. The company is based in Cheshire and states that its technical engineer has more than 20 years' experience in heating and renewable energy.
The heater selection should be based on the required flow rate, incoming water temperature, electrical supply, installation conditions and the specific emergency shower arrangement.
Flow rate and simultaneous demand
Flow requirements should be calculated rather than estimated.
A pharmaceutical facility may have several emergency washing points, and the design engineer needs to establish whether more than one unit could reasonably be required at the same time. The available mains pressure and flow should also be checked.
Other water demands within the building can affect performance. If an emergency shower shares a supply with production equipment, process water, toilets or other outlets, pressure fluctuations could potentially affect the emergency system.
A properly designed system considers:
• Required emergency shower flow
• Eyewash flow requirements
• Available mains pressure
• Incoming water temperature
• Required outlet temperature
• Electrical capacity
• Pipework sizing
• Number and location of emergency outlets
• Potential simultaneous demand
• Drainage and discharge arrangements
• Maintenance and testing requirements
These factors are particularly important when an existing pharmaceutical facility is being upgraded or an emergency shower is being added to an established production area.
Pharmaceutical environments require careful installation planning
The physical installation is only one part of the project. The surrounding environment must also be considered.
Pharmaceutical manufacturing areas can have strict requirements relating to cleanliness, access, drainage, materials and contamination control. Equipment should therefore be selected and installed in a way that is compatible with the area in which it will operate.
The emergency shower itself must remain accessible and clearly identifiable. It should not become obstructed by stored materials, temporary equipment, pallets or production changes.
Drainage also deserves attention. A high-volume emergency shower can discharge a substantial quantity of water. The installation should therefore consider where that water will go and whether drainage arrangements are appropriate for the substances that could potentially be washed from a casualty.
Hygiene and Legionella considerations
Emergency showers and eyewash systems are water systems and should not be treated as isolated safety equipment.
HSE identifies emergency showers and eyewash sprays among systems that can potentially create a Legionella risk, particularly where water is stored or recirculated, temperatures fall within favourable ranges for bacterial growth, or the system can generate aerosols. Appropriate risk assessment and maintenance are therefore important.
This is particularly relevant where an emergency shower remains unused for long periods.
Regular flushing, inspection and maintenance should form part of the site's documented arrangements. HSE guidance for emergency washing equipment also highlights the importance of regular testing and maintenance in accordance with the manufacturer's instructions.
Standards and pharmaceutical compliance
Emergency shower equipment should be selected with the relevant British and European standards in mind.
The BS EN 15154 series covers different types of emergency safety showers and eyewash equipment. For example, BS EN 15154-2:2025 applies to plumbed-in eyewash units, while BS EN 15154-5 and BS EN 15154-6 cover specific emergency shower arrangements for sites other than laboratories.
It is also important to distinguish emergency safety equipment from pharmaceutical GMP requirements. GMP governs the manufacture and quality of medicines, while workplace safety requirements address risks to employees and other people on the premises. MHRA explains that UK medicines manufacturers are subject to GMP requirements and inspections.
Consequently, an emergency shower installation should be considered alongside the site's wider health and safety, engineering, quality and facilities-management procedures.
Choosing an emergency shower heating solution
For pharmaceutical manufacturers planning a new installation or replacing an existing emergency shower water heater, the specification should be based on the actual application.
Before selecting equipment, consider:
The hazard assessment – Identify where chemical or process exposure could occur.
Required shower and eyewash locations – Equipment needs to be immediately accessible from the relevant hazard areas.
Flow requirements – Establish the manufacturer's required flow and available water supply.
Water temperature – Determine the appropriate controlled outlet temperature for the emergency application.
Electrical supply – Check whether the existing electrical infrastructure can support the required instantaneous heating capacity.
Drainage – Consider the volume and nature of water discharged during an emergency.
Water hygiene – Include the emergency shower system within appropriate water safety and Legionella risk-management arrangements.
Testing and maintenance – Establish a documented inspection, flushing and maintenance programme.
Future expansion – Consider whether additional production lines or emergency points may be added later.
A correctly specified system can help provide dependable emergency water delivery without unnecessarily maintaining a large volume of stored hot water.
Emergency drench shower systems for pharmaceutical facilities
For pharmaceutical manufacturing sites, laboratories, chemical preparation areas and related industrial facilities, the combination of an appropriate emergency shower, eyewash provision and correctly engineered water-heating system can form an important part of the site's emergency arrangements.
If you are specifically looking for emergency drench showers for pharmaceutical manufacturing, the heating system should be assessed as an engineering application rather than treated as a standard domestic hot-water installation. Flow, temperature, electrical capacity, water hygiene, drainage and the operating environment all need to work together.
For sites requiring a pharmaceutical emergency shower or advice on an emergency drench shower pharmaceutical application, specialist technical input can help establish the appropriate water-heating arrangement for the installation.
To find out more, visit https://tanklesswatersolutions.co.uk/. The company provides emergency drench shower heating solutions for commercial and industrial applications and has technical experience of more than 20 years in the heating and renewable energy sector. You can call 020 8075 5838 or email sales@tanklesswatersolutions.co.uk to discuss your requirements.
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