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STANDARD OPERATING PROCEDURE: Class 10 through 100,000 Cleanroom Gowning

STANDARD OPERATING PROCEDURE: Class 10 through 100,000 Cleanroom Gowning

USC Environmental Health and Safety


CONTENTS

1.0 PURPOSE
2.0 REFERENCES
3.0 DEFINITIONS
4.0 RECOMMENDED GOWNING APPAREL/PERSONAL PROTECTIVE EQUIPMENT
5.0 PROCEDURE
5.1 GOWNING
5.2 CLEANROOM ENTRY
5.3 CLEANROOM ACTIVITY
5.4 CLEANROOM EGRESS
6.0 PROGRAM APPROVAL AND REVIEW

1.0 PURPOSE

This standard provides recommended gowning requirements and instruction for Class 10 through Class 100,000 Cleanrooms.

2.0 REFERENCES

Fisher Scientific – Cleanroom Protocols
http://www.fishersci.com/ecomm/servlet/cmstatic?storeId=10652&href=Scientific/scientificStandard/Product
sServices/Cleanroom/sc_std_Cleanroom_080206_1530.jsp&store=Scientific&segment=scientificStandard

3.0 DEFINITIONS

Cleanroom – A room that is maintained virtually free of contaminants, such as dust or bacteria, used in laboratory work and in the production of precision parts for electronic or aerospace equipment (also called white room).

4.0 RECOMMENDED GOWNING APPAREL/PERSONAL PROTECTIVE EQUIPMENT



The table above lists recommended gowning apparel per class of cleanroom. Additionally, use chemical splash goggles or safety glasses for eye protection; for operations that may involve splashing, include a face shield.

Thick butyl rubber, neoprene, nitrile, or polyethylene gloves may be appropriate. Check glove manufacturer for recommendations on a suitable glove for the specific chemical. Ensure that personal protective equipment is worn at all times while in the cleanroom.

5.0 PROCEDURE

5.1 GOWNING

1. Use a shoe cleaner if necessary to remove any dirt/grime. Then, put on shoe covers (booties) one foot at a time and hairnet. Step on tacky mat with both feet and enter gowning area.
2. Keep gowning area clean and adhere to cleanroom safety policies at all times.
3. Ensure that all jewelry (including rings and watches) is covered by protective wear and does not interfere with research.
4. Continue to put on: bouffant cap or hood; facemask (Class 10 to Class 100). NOTE: Ensure no gaps around nose or mouth; and coveralls (or frock/lab coat). Ensure that bouffant cap or hood covers hair and ears completely. NOTE: Take care not to tear garment. If any tear occurs, remove garment and replace immediately with a new one.
5. Step over gowning bench to controlled area. Put on the following:
a. Boots; tuck coverall legs into boots
b. Pair of gloves (to be worn over the sleeves of the coverall)
c. Wear safety glasses/splash goggles.
6. It is recommended to change garments (bouffant cap or hood; facemask; boots; arm sleeves, if applicable; and coveralls or frock/lab coat) weekly. If garments are heavily soiled or damaged then replace immediately. Garments may be changed at a higher frequency if specified by a research department or group.
a. It is recommended that gloves be changed at least once per work session.
b. Disinfect gloves (a) prior to entering an aseptic area, (b) regularly during operations, and (c) before contact with an aseptically gowned person.

5.2 CLEANROOM ENTRY

1. Any item brought into the cleanroom must be thoroughly wiped down with an approved cleanroom wipe and solution such as alcohol (IPA) and DI water.
2. Seek approval before bringing tool boxes including contents, chemicals, instruments, etc. into cleanroom. Wipe down completely before entry.
3. All supplies must enter the cleanroom either through the (a) gowning area; (b) Material Pass-through; or
(c) Equipment Transfer room (if available).
4. Unbox equipment, parts, etc. and remove packaging before bringing them into the cleanroom.
5. Keep wood, pencils, cardboard, non-cleanroom rated paper, or materials that generate particulates out of
the cleanroom.
6. Poly bags may be employed for carrying essential items for research into the cleanroom.

5.3 CLEANROOM ACTIVITY

1. Refrain from excess talking or shouting
2. Activity - Do not:

a. run or make fast movements
b. touch, rub, or scratch scalp, skin, hair, or eyes
c. write on walls, gloves, equipment, or garments
d. use a cell phone (unless an emergency; dial 213-740-4321)
e. use duct tape
f. Sand, drill, file, or weld. However, specialized sawing in a controlled area may be allowed (e.g., dicing saw in the VSoE Photonics Lab)
3. Apparel - Do not:
a. remove any piece of cleanroom apparel
b. remove articles from underneath cleanroom garment
c. wear (i) garments that shed lint or fibers; (ii) contaminated, soiled, or torn cleanroom garments; (iii) shorts, midriff tops, tank tops, or hats; (iv) open-toe shoes, sandals, or fabric-covered shoes; and (v) any jewelry if it will compromise safety attire or interfere with cleanroom research or activities
d. re-use disposable gloves

4. Do not prepare or consume food or drink. Do not use tobacco
5. Do not wear or apply cosmetics.
6. Do not wear contact lenses.
7. Do not work in the cleanroom if coughing or sneezing.

5.4 CLEANROOM EGRESS

1. Enter gowning/control area to remove gowning. Discard gloves in a labeled trash can. NOTE: Do not exit area without removing gloves first.
2. Remove articles in reverse order i.e., safety glasses/splash goggles, boots, arm sleeves (optional), overalls, and hood. Exit control area.
3. Place reusable garments, hood, boots, arm covers (optional), and coverall on a hanger.
4. Exit the cleanroom facility.
5. Remove shoe covers and hairnet.

6.0 PROGRAM APPROVAL AND REVIEW

Date prepared: 09/17/2011 By: Alfred M. Bouziane
Date reviewed: 10/07/2011 By: Donghai Zhu, Jeff Wigintton, and Alfred M. Bouziane