# Semiconductor Cleanroom Gowning Checklist > Source: https://netray.co/tools/semiconductor-cleanroom-gowning-checklist > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: Free Tools ## Short answer A step by step gowning checklist for fab and OSAT cleanrooms, from pre entry checks to exit and garment disposal. ## Category ehs-workforce ## Industry Semiconductors ## Audience - Fab operator - Cleanroom supervisor - Facilities engineer - Quality engineer ## Tool **Kind:** checklist **Groups:** #### Before entering the gowning area **Items:** **Text:** No makeup, perfume, nail polish or artificial nails in the clean zone **Critical:** true **Text:** No food, gum, candy or tobacco beyond the controlled break area **Critical:** true **Text:** Personal items such as phones, paper and pens stored in the locker or approved for the room **Critical:** true Street shoes cleaned on tacky mat or shoe cleaner Hair, beard and moustache contained for the next step Visitor badge and training status checked at the entrance **Text:** Any cold, cough, open wound or skin condition reported to supervisor **Critical:** true Restroom visit completed before gowning, since exit means regowning #### Gowning room: clean to cleaner order **Items:** Hands washed and dried with the approved wipe or dryer **Text:** Hood or head cover put on first, covering all hair and ears **Critical:** true **Text:** Face mask or beard cover fitted over nose and mouth **Critical:** true Garment package opened without touching the floor **Text:** Coverall or bunny suit stepped into without letting it touch the floor **Critical:** true Zip fully closed up to the collar and hood tucked inside Boots or shoe covers put on, pant legs tucked in or sealed Safety glasses or goggles fitted where the area requires them **Text:** Inner gloves put on last, cuffs placed over the sleeve ends **Critical:** true #### Final check before entering the fab **Items:** **Text:** Mirror check: no skin, hair or street clothes visible **Critical:** true Gloves intact, correct size and no residue Garment free of tears, loose threads and visible soil **Text:** ESD check: wrist strap or footwear tester passed where required **Critical:** true Air shower used for the full cycle where installed Badge and pass log updated for the controlled area Garment ID and size matched to the person if assigned #### Inside the cleanroom **Items:** **Text:** Do not touch face, hood or mask with gloves **Critical:** true Change gloves when torn, contaminated or after touching non clean surfaces Use cleanroom paper and approved pens only Walk, do not run, and avoid fast arm movement near open wafers or FOUPs Report any spill, particle alarm or garment damage immediately Tools and carts wiped or cleaned before entering #### Exit and garment handling **Items:** Outer gloves removed first and disposed in the bin Reusable garments hung on assigned hangers inside out where policy says so Disposable items discarded in the gowning room bin Damaged or soiled garments tagged for laundry or repair Hands washed after leaving the gowning area **Text:** Regowning done in full after any break outside the clean zone **Critical:** true **Scoring Note:** Every critical item must pass. Any critical miss means the person regowns before entry. Adjust the list to your fab's ISO 14644 class, garment type and written gowning procedure. ## Content **Intro:** People are the largest source of particles in a cleanroom. This checklist walks an operator or a visitor through gowning in the right order and gives supervisors something to audit against. **Sections:** #### How to use the checklist **Body:** Print it for gowning room training, keep it at the entrance for audits, or tick through it on a tablet. Critical items are the ones most tied to particle shedding, such as hood and mask coverage, glove cuffs and the final mirror check. A missed critical item means regowning before entry. Many fabs also add a short supervisor observation of a few operators per shift, which turns the list into trend data on where gowning breaks down. #### Why order matters **Body:** Gowning goes from the top of the body to the bottom and from the dirtiest items to the cleanest. Hood first, then mask, then coverall, then boots, then gloves last, so the gloves touch the least. This limits particles falling from hair onto garments that are already on and keeps the glove surface clean. The principles come from ISO 14644 cleanroom practice and each fab's own contamination control plan. Your written procedure takes priority over any generic list. **Bullets:** - Cover hair and skin before any garment touches the floor zone - Never let garments touch the floor - Gloves last and checked for tears - Regown fully after leaving the clean zone #### Common mistakes and audit tips **Body:** The usual failures are exposed hair at the neckline, mask below the nose, sleeves not covering the wrists, and reusing gloves after touching a phone, face or door handle. In OSAT assembly areas, people also forget that gowning applies to engineers walking through briefly. For audits, sample at the gowning room exit, pair it with particle count data, and log the findings. When a particle excursion appears, gowning observations are one of the first places to look. **Cta:** If you want gowning audits, garment inventory and training status tied to your ERP or HR records, Netray can build that as a private app over your own data. **Faq:** #### Does this replace our written gowning procedure? **Answer:** No. Treat it as a starting point. Your own SOP, ISO 14644 class, garment type and contamination control plan define the required steps, and the SOP wins in any conflict. #### Why are gloves put on last? **Answer:** Gloves contact the garment cuffs and everything you touch while dressing. Putting them on last keeps them clean and sealed over the sleeve, which limits skin and fiber shedding at the wrists. #### How often should gowning be audited? **Answer:** Many fabs observe a sample of operators every shift or week, and audit more after particle excursions. The right frequency depends on class, risk and how stable your particle trend is. #### Do OSAT assembly areas need the same gowning? **Answer:** Not always. Assembly and test areas often run ISO 7 or 8 with simpler garments than a front end fab at ISO 5 or better. Use the level your classification and customer requirements specify. ## Search terms cleanroom gowning checklist, cleanroom gowning procedure, semiconductor gowning steps, cleanroom entry checklist, fab gowning procedure, cleanroom garment checklist, ISO 14644 gowning, bunny suit procedure --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json