Our ISO Class 7 Clean Room for Precision Engineering

Our clean room is engineered to meet the highest industry standards, offering contamination control through our carefully maintained industrial clean room environment. Our facilities operate in compliance with ISO 14644 classifications, ensuring that airborne particulate levels are regulated and consistently maintained within defined limits. Advanced filtration systems, including HEPA and ULPA technologies, are integrated to achieve optimal air purity, while rigorous environmental monitoring guarantees adherence to critical cleanliness parameters.

The integration of advanced clean room facilities within manufacturing environments is important for achieving stringent contamination control, particularly in high-precision industries such as aerospace, medical device production, and pharmaceutical manufacturing.

Our clean room services are designed to integrate with diverse manufacturing workflows, offering flexibility for sub-assembly, kitting, and final inspection processes. This approach not only supports standalone cleaning requirements but also enhances supply chain efficiency by consolidating quality assurance protocols within a single, controlled environment.

Types of Cleaning Services

To meet the needs of our customers, we offer a range of cleaning solutions beyond ultrasonic cleaning, each suited to specific applications and material types.

Ultrasonic Cleaning Systems

Using high-frequency sound waves to dislodge contaminants from intricate geometries and surfaces, essential for complex components such as hydraulic manifolds and medical devices.

Solvent Cleaning

Solvent cleaning involves using chemical solvents to break down oils, greases, and organic residues. It is essential for applications requiring precision cleanliness, particularly in aerospace and automotive industries.

Aqueous Cleaning

Aqueous cleaning uses water-based solutions to eliminate particulate and soluble contaminants. This method is particularly effective for medical devices, where residue-free surfaces are crucial for biocompatibility. Our advanced cleaning capabilities include:

Oxygen, LOX, and Hydraulic Cleaning

Oxygen and LOX cleaning eliminate hydrocarbons and contaminants that may react dangerously with oxygen, vital for aerospace and medical systems. Hydraulic cleaning removes particulates from hydraulic system components, essential for ensuring circuit integrity and longevity.


Clean Room Cleaning in the Wider Manufacturing Process

A component’s journey through our clean room services is meticulously planned to maximise efficiency and quality. The clean room can serve as an independent service within the broader manufacturing process or integrate seamlessly into sub-assembly and kitting operations.

Typical Stages Include:

  1. Pre-Cleaning Assessment: Evaluating the component’s condition and contamination level.
  2. Cleaning and Degreasing: Using ultrasonic or solvent-based methods depending on material and application requirements.
  3. Inspection and Quality Verification: Applying rigorous testing to verify that contaminants are fully eliminated.
  4. Packaging and Kitting: Assembling cleaned components into kits, labelled and documented for full traceability.

William Hughes offers clean room services as a standalone solution, allowing customers to benefit from precision cleaning regardless of whether they source components from us. This flexibility supports our commitment to serving various industries, from aerospace to medical manufacturing, with unparalleled expertise.

Inspection and Quality Assurance Tests within the Clean Room

At William Hughes, we recognise the importance of managing the environmental impact of all our manufacturing processes, including those of the clean room. As such, our facility has been engineered to minimise both ecological impact and resource consumption while maintaining the highest standards of contamination control. This commitment to sustainability is engineered throughout our cleanroom services.

Advanced Air Filtration and Recirculation

Our clean room is equipped with state-of-the-art High-Efficiency Particulate Air (HEPA) and Ultra-Low Penetration Air (ULPA) filtration systems, capable of capturing up to 99.999% of airborne particles as small as 0.12 micrometres. These systems not only ensure stringent compliance with ISO 14644 cleanliness standards but also incorporate air recirculation technology to minimise energy consumption.

Our commitment to environmental best practices extends to chemical lifecycle management, which includes sourcing agents from suppliers adhering to REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulations. This ensures traceability and compliance throughout the entire supply chain, from procurement to waste disposal.

Energy Efficiency and Resource Conservation

The clean room’s infrastructure is optimised for energy efficiency, incorporating smart HVAC systems with variable-speed drives that dynamically adjust to changes in occupancy and operational demands. This reduces power consumption while maintaining optimal environmental parameters. Additionally, low-energy LED lighting and occupancy sensors are integrated throughout the facility to further reduce unnecessary energy use.

Quality Assurance and Accreditation

Our clean room services are designed to meet stringent international standards, ensuring quality and traceability at every stage. Key certifications and standards include:

  • ISO 14644: Compliance with the international standard for clean room classifications and air cleanliness.
  • AS9100: Aerospace Quality Management System certification, demonstrating our commitment to high-precision standards.
  • ISO/TS 16949: The latest automotive standard
  • ISO 9001: Quality management certification for consistent and reliable service delivery.

FAQs

Our clean room services are engineered to support precision manufacturing across aerospace, medical, defence, and advanced engineering sectors. This FAQ section addresses technical considerations frequently raised by procurement professionals, quality engineers, and operations specialists.

Q1 What is a clean room used for in the manufacturing process?

A clean room in the manufacturing process is a controlled environment designed to minimise particulate, chemical, and biological contamination during precision manufacturing processes.

Q2 What clean room services does William Hughes offer?

William Hughes provides ultrasonic cleaning, solvent cleaning, aqueous cleaning and thorough inspection services, all within an ISO 14644-compliant environment. We are capable of cleaning a wide range of materials, including stainless steel, titanium, aluminium, and various polymers. Materials are cleaned to internationally recognised cleanliness standards such as ISO 14644-1 and specific customer requirements. These standards ensure that surfaces have minimal particulate and chemical contaminants, critical for applications where even microscopic residues can compromise functionality or safety.

Q3 Are William Hughes’ clean room services available to outside organisations?

Yes, our clean room services are available as standalone offerings, allowing customers to benefit from precision cleaning without sourcing components from us

Q4 How does William Hughes ensure environmental responsibility in clean room operations?

We utilise sustainable cleaning agents, advanced filtration systems, and rigorous waste management protocols to minimise our environmental impact.

Q5 Are clean room processes traceable?

Yes, every cleaning batch is accompanied by full documentation and certificates of conformance, ensuring complete traceability.

Q6 What traceability mechanisms are implemented to document cleanliness verification and component certification, and how do these align with customer-specific regulatory standards?

Each component processed within the clean room is assigned a unique batch identifier that links directly to a digital traceability framework. This system captures all process variables, including cleaning method, solution chemistry, equipment used, inspection outcomes, and final packaging data. Cleanliness verification is validated through methods such as particulate testing analysis, and ultraviolet inspection. Certificates of Conformance (CoCs) are generated upon completion and aligned with sector-specific standards such as AS9100 (aerospace), and ISO/TS 16949 (automotive).

Q7 What specific environmental monitoring techniques are employed to continuously verify ISO 14644 compliance, and how are deviations managed in real-time?

Environmental conditions within the clean room are monitored via a network of calibrated particle counters, temperature and humidity sensors, and differential pressure transducers. Airborne particulate concentrations are sampled at defined intervals in accordance with ISO 14644-2, with data captured in real time and logged into an environmental monitoring system (EMS). The system triggers immediate alerts if measurements approach predefined control limits, allowing for rapid intervention. Root cause analysis protocols are automatically initiated in the event of a deviation, and corrective actions—ranging from recalibration of HVAC systems to temporary process halts—are enacted under a documented CAPA (Corrective and Preventive Action) framework to restore compliance with validated conditions.

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