Clean room management regulations

1. Purpose

To make the use and management of clean rooms of all levels standardized and followed, so as to maintain good personnel discipline and a clean and safe production environment.

2. Working environment

Controlled temperature in clean room: 22+3℃

Humidity: less than or equal to 50%

Cleanliness requirement: Class 10,000 clean room.

3. Scope of application

This method applies to all personnel in the product department, technical department, equipment department, etc. who need to enter and exit the clean room.

(Figure 1: Clean room management)

4. Responsibilities

4.1 All personnel entering the clean room have the obligation to maintain the Clean room environment;

4.2 The product department is responsible for the cleaning and management of the clean room;

4.3 The equipment department is responsible for the operation and management of the peripheral facilities of the clean room;

4.4 The quality department is responsible for the testing of environmental parameters such as temperature, humidity, cleanliness, etc. of the clean room

5. Working steps

5.1 Clean room entry and exit management

5.1.1 Dressing

• Hair must be covered in the dust cap and must not be exposed.

• Mouth and nose must be covered in the mask.

• The hem of the dust-free cap must be completely tucked into the collar of the dust-free clothing.

• When wearing the dust-free clothing, do not roll up the sleeves.

(Figure 2: Air shower)

5.1.2 Air Shower

• Before entering the clean room, make sure the air shower is in working condition.

• When entering the air shower, the person should stand in the center of the air shower, raise both hands and rotate for more than one circle to help shake off the dust.

• In order to avoid affecting the normal air circulation and dust removal effect, the person should not lean on the door or wall of the air shower.

• It is strictly forbidden for the person to forcibly close the air shower or change the air shower parameters at will.

• All items entering and leaving the room must enter through the cargo shower. It is strictly forbidden for the person to enter and exit through the cargo shower.

5.2 Management of items in the clean room

5.2.1 All equipment and instruments entering the clean room must be cleaned before entering the clean room.

5.2.2 All tools used in the clean room must be guaranteed not to rust, not to shed, and not to produce fine powder particles

5.2.3 Any unauthorized Electronic equipment with video and photo functions is prohibited from entering the clean room.

5.2.4 Office supplies in the clean room must use dust-free paper, and erasers, pencils and other tools that produce fine powder particles are prohibited from being used for writing.

5.2.5 There is a normal fluid airflow state in the clean room, so all personnel entering the clean room assist in ensuring the normal operation of the airflow, and factory equipment personnel need to regularly check related equipment to ensure the normal circulation of the circulating airflow.

5.2.6 In order not to interfere with the Clean airflow pattern in the room, try not to pile up debris near the return air outlet.

(Figure 3: Management of items in A Clean Room)

5.3 Personnel management in the clean room

5.3.1 Personnel entering the clean room must wear complete clean clothes, and must not take off clean clothes, gloves, and masks at will;

5.3.2 Personnel in the clean room are prohibited from playing, fighting, making noise, running, and other actions that are easy to generate dust in the clean room:

5.3.3 Personnel entering the clean room are strictly prohibited from carrying flammable and explosive items such as lighters and cigarettes:

5.3.4 Personnel entering the clean room are not allowed to bring beverages, fruits, chewing gum and other food;

5.3.5 Woolen clothes worn by personnel entering the clean room must not be exposed to the dust-free environment, nor can they be directly in contact with clean clothes to prevent cross-transmission.

5.3.6 Personnel entering the clean room are prohibited from wearing makeup, applying lipstick, rubbing eyelashes, growing long nails, and applying powder, which will affect the environment and products.

5.3.7 People who drink or do strenuous exercise are not allowed to Enter the clean room within half an hour to prevent suffocation and other adverse physical conditions.

(Figure 4: Personnel management in clean room)

5.4 Cleaning and Sweeping Management in Dust-free Rooms

5.4.1 The positive pressure and reflux systems in dust-free rooms must be kept in operation 24 hours a day to maintain cleanliness and prevent dust from falling;

5.4.2 The tools used for cleaning in dust-free rooms must be vacuum cleaners, dust-sticky rollers, sponge anti-static mops, dust-free cloths, clean water, and alcohol lamps dedicated to dust-free rooms. If there are special cleaning solvents, special management and control are required:

5.4.3 All air shower door entrances and exits in the car-free room need to be covered with foot-operated sticky pads with strong stickiness to ensure that all dust can be cleaned in time. Personnel should also be arranged to tear off and clean the foot-operated sticky pads regularly.

5.4.4 Definition of Clean Room Cleaning Frequency:

• The clean room shall be fully maintained and serviced every three months (the frequency can be adjusted according to the indoor environment later);

• The responsible areas of each unit shall be cleaned twice a day to maintain the clean room environment;

5.4.5 All garbage in the clean room shall be managed uniformly, classified and disposed of regularly, and shall not be thrown away at will;

5.4.6 The return air vent shall be opened regularly and personnel shall be arranged to clean the interior to prevent dust accumulation inside.

(Figure 5: Clean room cleaning management)

5.5 Clean room construction Management

5.5.1 Internal Construction

The construction of personnel inside the clean room shall be approved by the product department and the equipment department before construction can be carried out. During the construction process, dust and debris shall be avoided to affect the cleanliness. After the construction is completed, the site shall be cleaned in time.

5.5.2 Construction by External Personnel

Construction by external units shall be approved after writing the "Construction Application Form" before entering, and they shall bring their own dust-free clothes. The items brought in must be cleaned and dust-removed before entering.

5.6 Visitor Management

All visitors must obtain the consent of the vice president or above before entering the clean room. Visitors must wear clean white coats, clean hats, and shoe covers before entering. In principle, the stay time should not exceed half an hour.

5.7 Clean room monitoring 

The quality department monitors the cleanliness, temperature and humidity of the clean room on a regular basis every day and records them. If there is any abnormality, notify the product department and the equipment department for processing, and production can only be carried out after passing the inspection.