Change rooms

For jobs lasting 6 months or longer, showers and two-stage change-rooms are provided in accordance with 29 CFR 1910.141 (d). Wlien working with asbestos or lead, a five-stage decontamination may be the method of choice. These five stages include ... 

Steps to be taken when non-impermeable clothing is splashed by contaminated materials [OSHA Reference, 120(k)(5)(i)] Unauthorized removal of equipment or protective clothing from change rooms [OSHA Reference, 120(k)(6)]... 

Changing-room facilities for male/female personnel. 

Separate changing-room facilities for male and female personnel would include the following ... 

Direct expansion cooling Temperature difference Air changes (room volumes) per hour Air-handling unit Static water gauge... 

Upward airflow is also practiced. The cable void formed by the raised floor is used to supply air which enters the room via floor grilles. These can be moved to meet the pattern of heat distribution and are normally placed close to the computer cabinets, but consideration must be given to changing air conditions, intended to meet changing room load, entering the computer compartments. Care has to be taken to avoid the updraft lifting dust into the occupied space. 

Good washing facilities should be provided, together with hot and cold running water, soap, medically approved skin-cleansers, clean towels and, ideally, showers. In addition, reconditioning creams should be available. The provision of changing rooms, with lockers for working clothes, is recommended. 

Where cooled or warmed liquids leave a process, heat exchangers can provide the means of pre-cooling or pre-warming fresh liquids entering. One of the main instances of this is the warm waste water from showers in changing rooms. 

Lavatories, change rooms, cafeterias, and medical facilities are all located inside buildings. The minimum size of these facilities is dictated by OHSA. It depends on the number of men employed. 

The exponential factors usually given for total plants should be used for grass-root plants, and not for new units constructed at a developed site or expansions to existing plants. Grass-roots plants are those built in a location that has not been previously developed. They cost more than plants built in an area where the company has other plants. When other plants are nearby, access roads, railroad sidings, sewers, and water lines may only need to be extended a short distance. Dock and steam generation facilities may be available, and office, lunchroom, medical, and change-room space may already be adequate. 

Multipurpose dry chemical extinguishers (2-A 10B-C) should be provided for office buildings, auditoriums, field offices, change rooms and other low hazard occupancies. Travel distance from any hazard to an extinguisher should not... 

Figure 3.2. Generalized clean room design. Entry of personnel occurs via changing rooms, where the operators first remove their outer garments and subsequently put on suitable clean room clothing (see e.g. Figure 3.3). All raw materials, portable equipment, etc. enters the clean room via a transfer lock. After being placed in the transfer lock, such items are sanitized (where possible) by, for example, being rubbed down with a disinfectant solution. They are then transferred into the clean room proper, by clean room personnel. Processed product usually exits the clean room via an exit transfer lock and personnel often exit the room via a changing room separate from the one they entered (in some cases, the same changing room is used as an entry and exit route). Note that, in practice, product may be processed in a number of different (adjacent) clean rooms...

Change room Room no. Wall, floor Wall, doorknob, floor beneath both doors, door control units, cupboard, mirror, corners 1 CFU 3 CFUs... 

Change room Provide room no. Twice/week 20 CPUs 35 CPUs... 

Special working clothes put on in the changing room. They should fit tightly at the wrists, and neck, to prevent the penetration of dust. Hair should be covered with a cap or other form of protective head dress. This protective clothing should be washed every week. 

Flammable materials must be stored outside in diked areas and away from process units and other active areas, control room office change rooms, etc. 

Laboratories, analytical equipment, offices, canteens, changing rooms, central control rooms ... 

Entry to a clean or aseptic area should be through a changing room fitted with interlocking doors this acts as an airlock to prevent influx of air from outside. This route is for personnel only, not for the transfer of materials and equipment. Staff entering the changing room should already be clad in the standard factory or hospital protective clothing. 

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