Planning process

Planning process

Planning a clean room is a professional art with comprehensive multi-conditions. In addition to the basic principles of dust isolation, temperature and humidity control, and pressure control, many factors such as budget, safety, environmental protection, and future use convenience must also be considered, as listed below:

Basic clean room design principles< /td>

Other considerations
  • Remove pollution sources such as dust
  • Prevent dust from happening
  • Prevent dust accumulation
  • Do not bring in dust
  • Temperature control
  • Humidity control
  • Maintain a constant room pressure
  • Removal of harmful gases
  • The air tightness of the structure and the compartment
  • Prevention of static electricity
  • Prevention of electromagnetic interference
  • Considerations of alternate safety factors
  • Considerations for energy saving
  • Budget considerations
  • The convenience of future maintenance and expansion

The planning of clean rooms is not easy. In addition to professional technology, its core value lies in the comprehensive integration of the scope and the interface of various systems in the construction of a clean working environment, thereby promoting the back-end construction performance. After completing the overall planning technology of a complete clean room project, through multi-party communication and coordination, after repeated confirmation and evaluation, a complete design drawing can be finalized. The flowchart is as follows.

 

Site specification

(Floor area. Regulations. Fire protection)

Job requirements

(Temperature, humidity, pressure, vibration amplitude, noise)

Air conditioning, filtration

(Air conditioning load)

Water Supply and Sewerage

(Production line)

electrical equipment

(Power. Receiving)

Waste disposal

(Waste water. Exhaust gas)



Planning elements of clean room

  • Basic design illustration completed
  • Complete the detailed design drawing
  • Construction according to design drawings
  • Completion and acceptance


Clean room detailed planning process chart

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PRODUCTION PROCESS BUILDING INTERIOR DECORATION AIR CONDITIONING FILTER WASTE WATER EXHAUST WATER SUPPLY AND DRAINAGE, SANITARY WARE PRODUCTION GAS ELECTRICAL EQUIPMENT


THE CHOICE OF PRODUCTION PROCESS
Setting options in clean room：
• Floor area
• Demand height
• Access, Exit
• Temperature and humidity
• Hazardous particle diameter
• Hazardous gases
• Harmful vibration amplitude, vibration
• Harmful vibration amplitude, vibration
• Power amount 、Cooling water amount
• Air supply volume
• Number of operators
• Attached equipment
• work movement line
• Interior patience

Choice of setting place：
• Building related regulations
• Public Hazard Prevention and Control of Fire Protection Law
• Regulations

 

 Air conditioning and filtering methods are determined：
• Design cleanliness
• Indoor load
• External air load
• Reheat and humidification amount
• How to use		 Processing method：
• Processing volume
• Discharge standard
• Waste disposal method		 Filter Method of decision：
• Required amount
• Space
• Related laws and regulations		 Related laws and regulations：
• Related laws and regulations
• Related laws and regulations
• Security related regulations		 Filter Determined by the way of power transformation：
• Required amount of power
• Is there any change in power reception
• Is there any power generation equipment?
Outline layout of production line machines Simplified design drawing completed
• Instructions
• Floor plan
• Elevation view		 Simplified design drawing completed
• Instructions
• System map
• Plane layout drawing
• Air purification device		 Simplified design drawing completed
• Explanatory drawing
• System map
• Configuration drawing


BASIC DESIGN ILLUSTRATION COMPLETED
• MANUAL
• BLUEPRINT
• EQUIPMENT DIAGRAM
• ELECTRICAL EQUIPMENT DIAGRAM
• ATTACHED EQUIPMENT CIRCLE


SUBMIT A BUILDING CONFIRMATION APPLICATION


BUILDING CONFIRMATION

Testing and validation

A dust-free environment is extremely important for industries that require cleanliness. If this cleanup condition is not met, it is very likely to contaminate products or cause equipment failures. Therefore, after its construction is completed, various tests and effect confirmations are required to ensure that it functions normally and meets the relevant specifications and cannot be ignored.

Clean room test
The clean room test can be roughly divided into the following three time points.
1. As-built stage: The clean room is completed, and the equipment and personnel have not yet been stationed.
2. Static test phase (At-rest): After the clean room is completed, the equipment has been moved in but the personnel have not yet been stationed.
3. Dynamic testing stage (Operational): Equipment and personnel are produced and operated in a clean room.
PS: Not every project needs to be tested at three points in time, but depends on its type and design requirements:

The main test items of the clean room are as follows (according to the contract): airflow velocity test, leak test, cleanliness test, indoor positive pressure test, temperature and humidity test, noise test, lighting test, static electricity (ESD) test, clean room airflow parallelism Test…etc. All tests are in accordance with the two major specifications of “US Federal FS-209E” and “ISO-14644-1”, supplemented by various precision measuring instruments, to obtain the most accurate data.

Among the clean room testing items, “Cleaniness Classification Testing” is the most important. It must meet the standard range in all three working stages, and certain items must be tested before testing the cleanliness to confirm the clean room The test of the system in operation mode can reach the standard range. The forecast items include:
1. Airflow Volume or Velocity Tests of the filter screen
2. Air Pressure Difference Test
3. Installed Filter Leakage Test (Installed Filter Leakage Test).

Clean room validation
The purpose of the Cleanliness Sure effect is to ensure that the system can continuously and steadily control the air quality in the workplace, so that the finished product can maintain the established quality without contamination. Cleanroom effectiveness is especially important for the pharmaceutical industry

Validation steps and purpose:

OrderStepsPurpose
1Air volume ventilation testConfirm the air volume of the air outlet in each clean room, and count the number of air changes to verify whether it meets the design value of the clean room.
2PAO leak testPAO test is a very efficient test procedure. It uses smoke-like molecules (>0.3 micons) to know if the equipment or filter is leaking.
3Cleanliness testCheck whether the clean room meets the standard value of the class area by the instrument of the particle counter.
4Temperature and humidity testConfirm whether the temperature and humidity of each clean room in the clean room meet the design value and are within the specification.
5Airflow direction testConfirm whether the pressure difference of the clean room meets the specifications, and at the same time confirm the air flow direction to avoid cross contamination and contamination of cleanliness.

Validation project
According to the designed clean room system specifications, the main inspection items are as follows (subject to the contract):

  1. Wind speed, air volume (uniformity) and air exchange rate test
  2. HEPA filter leak test
  3. Airborne particulate count
  4. room pressure test
  5. airflow parallelism test
  6. temperature and humidity uniformity test
  7. clean compartment integrity test
  8. Recovery test: Determine whether the clean room can be restored to the existing cleanliness within a limited time (only applicable to turbulent clean room) after a brief exposure to pollution by means of smoke or random spraying of airborne particles.