What factors affect the decoration cost of the purification workshop? Summary of Experience of Cleanroom Construction Units

In the field of industrial production, especially in industries such as electronics, medicine, and food that require extremely high environmental cleanliness, the construction and decoration of purification workshops are the core links to ensure product quality and production safety. However, the decoration cost of purification workshops is often much higher than that of ordinary industrial plants, and their cost is influenced by multiple factors, involving multiple dimensions such as design, materials, processes, equipment, and construction management. As Shenzhen Huajianjing Construction Engineering Co., Ltd. (referred to as Huajianjing), a professional enterprise specializing in the design and construction of clean rooms, we have combined more than ten years of industry experience to summarize the key factors that affect the decoration cost of purification workshops from a technical practice perspective, providing owners with scientific decision-making references.

1、 Cleanliness level: the core variable of cost

The cleanliness level of the purification workshop is the primary factor determining the decoration cost. According to the international standard ISO 14644-1 or the Chinese national standard GB 50073, cleanrooms are classified into ISO 1 to ISO 9 levels (corresponding to Chinese levels 10 to millions), with higher levels leading to an exponential increase in unit area cost.

Taking electronic chip manufacturing as an example, ISO Class 5 (Class 100) cleanrooms require a concentration of 0.1 μ m per cubic meter of air; The particle count of m does not exceed 3520, and its decoration cost can reach 5-8 times that of ordinary factories. The cost difference is mainly reflected in:

• Air purification system : High grade clean rooms require high-efficiency filters (HEPA/ULPA), laminar air supply devices, and intelligent monitoring systems, with equipment investment accounting for over 40%;
• Enclosure structure : Using color steel plates, stainless steel or epoxy resin floors with better air tightness, the material cost is 2-3 times higher than that of ordinary factories;
• Construction accuracy : Gap control needs to reach millimeter level, increasing labor costs by 30% -50%.

Huajianjing discovered in a semiconductor project that upgrading the cleanliness level from ISO 6 to ISO 5 resulted in a significant increase in the cost per square meter from 3500 yuan to 6200 yuan, highlighting the decisive role of level in cost.

2、 Material Selection: The Art of Balancing Performance and Cost

The materials used in the purification workshop must meet the characteristics of dust prevention, corrosion prevention, and easy cleaning. The choice of materials directly affects the initial investment and long-term maintenance costs.

1. Wall and floor materials

The mainstream solutions include:

• Rock wool sandwich color steel plate : High cost performance, suitable for ISO 7-8 level workshops, with a unit price of about 200-300 yuan/sqm;
• Stainless steel plate : Strong corrosion resistance, suitable for high humidity or chemical pollution environments, with a unit price of 800-1200 yuan/sqm;
• Epoxy self leveling floor : seamless dust-proof, thickness 2-5mm, unit price 80-150 yuan/sqm;
• PVC roll flooring : wear-resistant and anti-static, unit price 120-200 yuan/sqm.

In a certain biopharmaceutical project, Huajianjing optimized the material combination (color steel plate+epoxy floor) and reduced the cost by 35% compared to the all stainless steel solution while meeting the ISO 7 standard.

2. Door and window system

Airtight doors, observation windows, and transfer windows require double-layer glass, sealing strips, and automatic door closers, with a unit price 3-5 times that of ordinary doors and windows. For example, a 1.5m× fan; A 2.1m airtight door costs about 8000-12000 yuan, while a regular industrial door only costs 2000-3000 yuan.

3、 Process complexity: Details determine the upper limit of cost

The construction process requirements of the purification workshop are much higher than those of ordinary decoration, and any detail omission may lead to the cleanliness not meeting the standards.

1. Sealing treatment

All joints (wall to ground, wall to ceiling, pipe through wall) need to be sealed with silicone or special sealing strips, with a sealing cost of about 50-100 yuan per meter. In a certain photovoltaic project, Huajianjing strictly controlled the sealing process, which increased labor costs by 15%, but avoided millions of losses caused by rework in the later stage.

2. Pipeline layout

The purification workshop needs to independently set up process pipelines (such as compressed air, pure water), exhaust pipelines, and fire protection pipelines, with precise design of pipe diameter, material, and direction. For example, the unit price of 316L stainless steel pipes is three times that of ordinary carbon steel pipes, and complex piping systems may increase installation costs by 20% -40%.

3. Electrical system

Explosion proof lighting fixtures, clean room specific sockets, and electrostatic grounding systems are standard equipment, and the cost per square meter of electricity is 50% -80% higher than that of ordinary factories. Due to the adoption of an intelligent lighting control system in a pharmaceutical project, although the initial investment increased by 10%, the annual energy-saving income reached 200000 yuan.

4、 Equipment configuration: the game between functionality and cost

The core equipment of the purification workshop includes air handling units (AHUs), fan filtration units (FFUs), ozone generators, etc. The selection of equipment directly affects operational efficiency and cost.

1. Air treatment system

Taking a 1000 square meter ISO Level 6 workshop as an example, equipped with one 100000 air flow AHU and 50 FFUs, the equipment investment is about 800000 to 1.2 million yuan. If frequency conversion control technology is adopted, although it increases equipment costs by 15%, it can reduce energy consumption by 30%.

2. Temperature and humidity control

The pharmaceutical workshop needs to maintain a temperature of 22 ℃; 1 ℃, humidity 45%± A 5% harsh environment requires the installation of precision air conditioning and humidification/dehumidification systems, resulting in an additional cost of 200-300 yuan/square meter per unit.

5、 Construction Management and Regional Differences: The Key to Hidden Costs

1. Construction period

The construction of the purification workshop must strictly follow the requirements; Construction and protection at the same time; The principle is to extend the construction period by 30% -50% compared to ordinary factories. Huajianjing optimized the process through BIM technology, reducing the construction period of an electronic workshop from 120 days to 90 days, indirectly saving management costs of 200000 yuan.

2. Regional factors

Material transportation, labor costs, and environmental requirements lead to significant regional differences. For example, labor costs in Shenzhen are 20% -30% higher than in mainland China, while environmental approval fees may increase by 10% -15%.

6、 Huajianjing's Cost Control Strategy

As a leading enterprise in the industry, Huajianjing achieves a balance between cost and quality through the following methods:

• Modular design : Standardize clean units to reduce customization costs;
• Supply chain integration : Establish long-term cooperation with high-quality material suppliers to reduce procurement costs;
• Full lifecycle management : Provide one-stop services from design to operation and maintenance to avoid waste in later transformation.

In a certain new energy battery project, Huajianjing used the above strategy to control the single cost at 4200 yuan/sqm (ISO level 6), which is 18% lower than the industry average, while achieving long-term benefits of reducing energy consumption by 25%.

Conclusion

The decoration cost of a purification workshop is a comprehensive reflection of technology, materials, and management. Owners need to scientifically plan the cleanliness level according to production needs, prioritize the selection of materials and equipment with reliable performance and low maintenance costs, and rely on professional construction units to achieve full process optimization. Shenzhen Huajianjing Construction Engineering Co., Ltd. will continue to drive cost innovation through technology and provide the industry with cost-effective clean space solutions.