Topic 5. Methodology for calculating air exchange in rooms during ventilation operation at different times of the year (TP, HP)

The air exchange rate in the premises of retail trade enterprises (stores)

№	Premises	Estimated air temperature for the cold season, ° С	The rate of air exchange or the amount of air removed from the premises
			inflow	hood
1	Sales areas of shops with an area of ​​400 m2 or less:
	food	16	—	1
	non-food	16	—	1
2	Sales halls of shops with an area of ​​more than 400 m2:
	food	16	By calculation	By calculation
	non-food	16	By calculation	By calculation
3	Cutting	10	3	4
4	Unloading rooms	10	By calculation	By calculation
5	Premises for preparing goods for sale (when placed in a separate room), picking, acceptance	16	2	1
6	Pantries (uncooled):
	bread, confectionery;	16	—	0,5
	gastronomy, fish, milk, fruits, vegetables, pickles, wine, beer, drinks;	8	—	1
	footwear, perfumery, household chemicals, chemicals;	16	—	2
	other goods	16	—	0,5
6.1	Premises for the preparation of goods for sale (when placed in a separate room), picking, acceptance, expeditions	16	2	1
7	Premises for demonstration of new products (if placed in a separate room)	16	2	2
8	Ironing	16	By calculation	By calculation
9	Waste chambers (unheated)	—	—	—
10	Room for mechanized pressing of paper waste	16	—	1,5
Storage rooms:
11	packaging materials and inventory	16(8)	—	1
12	exchange fund containers	—	—	1
13	containers	8	—	1
14	cleaning equipment, detergents	16	—	1,5
15	Linen	18	—	0,5
16	Workshops, laboratories	18	2	3(2)
17	Refrigerated containment chambers:
	meat, semi-finished products, gastronomy	0	—	—
	fish	-2	—	—
	vegetables, fruits, confectionery, drinks	4	4	4
	ice cream, dumplings, etc.	-12	Periodically
	food waste	2	—	10
18	Air-cooled machine rooms	5	By calculation
19	Water-cooled chilled chamber machine rooms	5	2	3
20	Office premises, staff room, main cash desk, security room, ACS strong point	18	—	1
21	Dressing rooms, utility room for catering staff, dining room	16	—	1
22	Public toilets for shoppers and toilets for staff	16	—	50 m3 / h per toilet
23	Showers	25	—	5
24	Dispensary room (when the store is located in the underground floors)	20	—	60 m3 / h per person
25	Premises for receiving and issuing orders	12	—	1
26	Glass container reception rooms	16	—	1
27	Health center	20	1	1

Air exchange rate in the premises of public catering establishments

№	Names of premises	Design air temperature, ° С	Air exchange rate per hour
			inflow	hood
1	Hall, dispensing	16	According to the calculation, but not less than 30 m3 / h per person.
2	Lobby, entrance hall	16	2	—
3	Cooking shop	16	3	2
4	Hot shop, confectionery baking room	5	By calculation, but not less than 100 m3 / h per person.
5	Workshops: precooking, cold, meat, poultry, fish, processing of greens and vegetables	18	3	4
6	Premises of the production manager	18	2	—
7	Premises for flour products and confectionery finishing, linen	18	1	2
8	Room for cutting bread, for preparing ice cream, service, utility room	18	1	1
9	Washing room: dining room, kitchen utensils, pans, containers	18	4	6
10	Director's office, office, main cash register, rooms of waiters, staff, storekeeper	18	4	6
11	Pantry for dry products, pantry for inventory, pantry for wine and vodka products, storage room for beer	12	—	1
12	Pantry for vegetables, pickles, containers	5	—	2
13	Reception	16	3	—
14	Engine room of refrigerated chambers with air-cooled units	By calculation	By calculation	By calculation
15	The same with water-cooled units	—	3	4
16	Repair shops	16	2	3
17	Premises of public organizations	16	1	1
18	Refrigerated storage chambers:
meat	0	—	—
fish	-2	—	—
dairy products, gastronomy	2	—	—
semi-finished products, including a high degree of readiness	0	—	—
vegetables, fruits, berries, drinks	4	4	4
confectionery	4	—	—
wines and drinks	6	—	—
ice cream and frozen fruits	-15	—	—
food waste	5	—	10
19	Smoking room	16	—	10
20	Unloading rooms	10	By calculation	By calculation

Notes: 1. The air temperatures in rooms (except for refrigerated chambers) indicated in the table are calculated when designing heating systems.

2. In buffets, bars, cocktail halls, banquet halls located in separate rooms, the air ratio is taken as minus 3.

3. The air temperatures in the refrigerated chambers indicated in the table are maintained around the clock throughout the year. In chambers for the simultaneous storage of meat and fish or meat, fish semi-finished products, take temperatures ± 0 ° C; for vegetable semi-finished products +2 ° С; for storage of all products (1 chamber in the enterprise) ± 2 ° C.

Air exchange by heat surplus

Air exchange based on heat dissipation is determined if there is a large amount of heat in the room that needs to be removed.

Calculation of air exchange by heat surplus is carried out according to the formula:

L = 3.6 • Qrad / (ρ • c • (tsp – tpr)) (m3 / h),

where Qrad is the amount of heat that is released into the room, W;

ρ is the air density in the room, kg / m3;

с - mass heat capacity of air;

tsp is the temperature of the air that is removed by ventilation, ºС;

tpr - air temperature that is supplied, ºС.

Air flow rates for modulated equipment

№	Equipment	Brand	kw	Air volume, m3 / h
				Exhaust	Supply
1	Electric stove	PE-0.17	4	250	200
2	PE-0.17-01	4	250	200
3	Electric stove	PE-0.51	12	750	400
4	PE-0.51-01	12	750	400
5	Roasting cabinet	ShZhE-0.51	8	400	—
6	ShZhE-0.51-01	8	400	—
7	ShZhE-0.85	12	500	—
8	ShZhE-0.85-1	12	500	—
9	Electric device, cooking	UEV-60	9,45	650	400
10	Mobile boiler	KP-60	—	—	—
11	Deep fryer	FE-20	7,5	350	200
12	Cooking kettle with a capacity, l:
100	KE-100	18,9	550	400
160	KE-160	24	650	400
250	KE-250	30	750	400
13	Steam cooking apparatus	APE-0.23A	7,5	650	400
APE-0.23A-01	7,5	650	400
14	Electric frying pan	SE-0.22	5	450	400
SE-0.22-01	5	450	400
SE-0.45	11,5	700	400
SE-0.45-01	11,5	700	400
15	Steam table	ITU-0.84	2,5	300	200
ITU-0.84-01	2,5	300	200
16	Food warmer mobile	MP-28	0,63	—	—

Source: "Design of public catering establishments" Reference manual to SNiP 2.08.02-89

Calculation of air exchange rate

As already mentioned, provided that harmful impurities are not taken into account, the air exchange value is calculated according to the standard multiplicity. Whether it is a utility room or a production room, the formula for calculating air exchange rate will be the same:

L = Vpom ⋅ Kp (m3 / h),

where Vpom is the volume of the room, m3; Kp - standard rate of air exchange, 1 / h.

The volume of the room must be known, while the multiplicity number is regulated by the norms. These include building codes (SNiP 2.08.01-89), sanitary and hygienic standards and others.

Frequency rate of air exchange in the premises of sports and recreation institutions

№	Names of premises	Design air temperature, ° С	Air exchange rate per hour
			inflow	hood
1	Sports halls without seats for spectators (except for rhythmic gymnastics halls)	15	By calculation, but not less than 80 m3 / h per one practitioner
2	Rhythmic gymnastics halls and choreographic classes	18	By calculation, but not less than 80 m3 / h per one practitioner
3	Rooms for individual strength and acrobatic training, individual warm-up before the competition	16	2	3
4	Workshops	16	2	3
5	Classrooms, methodological rooms, rooms for instructors and coaches, judges, press, administrative and engineering staff	18	3	2
6	Household premises for workers serving the protection of public order	18	2	3
7	Fire post premises	18	—	2
8	Outerwear dressing room for practitioners	16	—	2
9	Locker room (including massage rooms)	25	Balance taking into account showers	2 (via showers)
10	Showers	25	5	10
11	Massage	22	4	4
12	Sanitary facilities:
common use	16	—	100 m3 / h per toilet or urinal
for practicing (with dressing rooms)	20	—	50 m3 / h per toilet or urinal
individual use	16	—	25 m3 / h per toilet or urinal
13	Washrooms at public sanitary facilities	16	—	At the expense of sanitary facilities
14	Inventory at the halls	15	—	1
15	Storerooms and warehouses:	—
with the constant presence of service personnel;	16	—	2
with a short stay of service personnel	10	—	1
16	Warehouses for reagents, household chemicals and paints	10	—	2
17	Drying rooms for sportswear	22	2	2

Air exchange rate in the premises of a credit and financial institution

№	Names of premises	Design air temperature, ° С	Air exchange rate per hour
			inflow	hood
1.	Operating and cash halls	18	Based on the assimilation of heat and moisture surpluses, but not less than twice the air exchange
2.	Shared work rooms, coin counters	18	2	2
3.	Room for meetings and negotiations	18	3	3
4.	Cash desk for counting banknotes	18	3	3
5.	Computing facilities, computing center	18	Calculated for assimilation of heat and moisture surplus
6.	Communication room (teletype) and photocopying	18	2,5	2,5
7.	Offices and receptions	18	1,5	1,5
8.	Archive, pantry of forms, pantry of equipment and inventory, pantry of bank materials, room for storing personal belongings of cashiers	18	—	1,5
9.	Repair shops	18	2	2
10.	Meal room, buffet	16	3	4
11.	Room for storing weapons, loading and cleaning weapons	16	—	1
12.	Boxes for collector cars	18	According to the design standards for parking garages
13.	Security premises with a fire station	18	1	1,5
14.	Women's personal hygiene facilities	23	—	5
15.	Sanitary facilities	16	—	50 m3 / h per toilet or urinal
16.	Lobby	16	2	—
17.	Wardrobes	16	—	2
18.	Premises for placement of uninterruptible power supply sources	16	Based on the assimilation of heat and moisture surplus

Ventilation standards in office premises

The office premises must comply with the climatic conditions specified in SanPiN 2.2.4.3359-16. In this case, the calculated air temperature corresponds to the parameters measured at a height of two meters from the floor covering in the place where the company's employees stay most of the time. As a first approximation, the temperature is determined by the formula:

where t (n.z.) is the temperature in the lower two-meter zone in ⁰С; ∆t - temperature difference (gradient) per 1 m height, in ⁰С / m; h - height from floor to ceiling in m.

If the heat from the equipment is not equal to the heat loss, the temperature gradient will be several degrees.

Ventilation rates are regulated by SanPiN 2.2.2 / 2.4.1340-03. In accordance with GOST 30494-2011, the air volume change rate is 0.1 m / s

Supply ventilation in offices promotes the flow of air into the premises. It is fed from a height of two meters above the ground. The air is often purified and heated or cooled as needed.

Air exchange rate in administrative and residential buildings

SNiP 2.09.04-87 *

№	Premises	Temperature during the cold season	Frequency rate or volume of air exchange, m3 / h
			Inflow	Hood
1.	Lobby	+16°	2	—
2.	Heated passages	Not lower than by 6 ° C the design temperature of the rooms connected by the transitions	—	—
3.	Streetwear wardrobes	+16°	—	1
4.	Wardrobes for joint storage of all types of clothing with part-time dressing of workers	+18°	Based on the compensation of the hoods from the shower rooms (but not less than one air change in 1 hour)	According to clause 4.8
5.	Dressing rooms at showers (pre-showers), as well as with full dressing of workers a) dressing clothes	+23°	5	5
	b) dressing rooms of home (street and home) clothes	+23°	Based on the compensation of the hoods from the shower rooms (but not less than one air change in 1 hour)	According to clause 4.8
6.	Showers	+25°	—	75 m3 / h for 1 shower net
7.	Restrooms	+16°	—	50 m3 / h for 1 toilet and 25 m3 / h for 1 urinal
8.	Washrooms at latrines	+16°	—	1
9.	Smokers	+16°	—	10
10.	Rest, heating or cooling rooms	+22°	2 (but not less than 30 m3 / h for 1 person.	3
11.	Premises for personal hygiene of women	+23°	2	2
12.	Premises for the repair of workwear	+16°	2	3
13.	Premises for shoe repair	+16°	2	3
14.	Premises for administrations, design bureaus, public organizations, with an area: a) no more than 36 m2	+18°	1,5	—
	b) more than 36 m2	+18°	By calculation
15.	Drying rooms for workwear	According to technological requirements within the range of 16-33 ° С	Also
16.	Dedusting rooms for workwear	+16°	«

Source: Administrative and domestic buildings SNiP 2.09.04-87 *

Air exchange rate in health care facilities

№	Name of premises	T, ° C	Air exchange rate		Room frequency category	Exhaust multiplicity with natural air exchange
			inflow	hood
1	2	3	4	5	6	7
I.	Hospitals, clinics, emergency and ambulance stations
1.	Manipulation toilet for newborns	25	2	H	2
2.	Manipulation with the use of chlorpromazine	22	8	10	D	not allowed
3.	Doctors' offices, staff rooms, rest rooms for patients using hydrotherapy and mud therapy, acupuncture rooms, discharge rooms, audiometry, anthropometry rooms, dispatch rooms for receiving calls and sending teams, a room for filling out documents, a rest room for dispatchers, doctors, paramedics, orderlies, drivers , mobile teams, medical statistics	20	influx from the corridor	11	H	1
4.	Angiography rooms, procedural X-ray diagnostic rooms, procedural and dressing rooms of fluorographic rooms, electrophototherapy rooms, massage	20	3	4	D	not allowed
5.	Undressing rooms at X-ray diagnostic rooms	20	3	—	H	»
6.	Procedural for X-ray. pictures of teeth, washing laboratory glassware, pathological departments, control rooms of X-ray rooms and radiological departments, photolaboratory	18	3	4	D	»
7.	Sterilization in operating rooms	18	—	3 septic compartments	D	2
3	aseptic departments	H	2
8.	Laboratories and rooms for the production of analyzes, rooms (rooms) for radiotelemetric, endocrinological and other research, rooms for receiving, sorting and taking samples for laboratory analyzes, assembly and washing rooms for an artificial kidney and rooms for a heart-lung machine, solution-demineralization, preparative laboratories, rooms for painting smears, weighing, colorimetric, medium cookers, material and apparatus laboratories, fixation, prescription, rooms for the preparation of dressing and operating materials and linen, control, collection and packaging of instruments, reception, disassembly, washing and drying of surgical instruments, syringes, needles , catheter, procedural rooms for treatment with antipsychotics, radio post, dictaphone center, current sterilization rooms, control room	18	—	3	see table. 3	2
9.	Halls of medical physical culture	18	50 m3 / h for one person engaged in the gym 80%	100 %	D
10.	Functional diagnostics rooms, rooms for sigmoidoscopy	22	—	3	D	2
11.	Physical therapy, mechanotherapy rooms, dental rooms, sounding rooms, rooms for deworming	20	2	3	D	2
12.	Premises (rooms) for the sanitization of patients, showers, personal hygiene booths, premises for subaquatic, hydrogen sulfide and other baths (except for radon), rooms for heating paraffin and ozokerite, therapeutic swimming pools	25	3	5	D	2
13.	Premises for storing plaster bandages, gypsum, museums and preparatory rooms with them in pathological departments, compressor inhalers, central linens, pantries of infected linen and bedding, pantries of household equipment, pantries of patients' belongings and ironing, instrumental and material, pantries of reagents and equipment in pathological anatomical departments, premises for the current repair of physiotherapy equipment, storage of boxes for mobile teams, the current stock of medicines, a pharmacy room, a pantry for a month's supply of medicines, a pantry of non-sterile materials and linen	18	—	1	D	1
14.	Sterilization rooms - autoclave central sterilization rooms:	18	by calculation	is allowed
a) clean compartment	100 %	—	H
b) dirty compartment	—	100 %	D
15.	Premises for washing, sterilizing and storing ships, pots, washing and drying oilcloths, sorting and temporary storage of dirty linen, for storing cleaning items, premises for temporary storage of linen and solid waste contaminated with radioactive substances, pantries of acids and disinfectants, stretcher washing rooms and oilcloths, a room for drying clothes and shoes of mobile teams	18	—	5	D	3
16.	Receptions, information lobbies, dressing rooms, rooms for receiving parcels for patients, waiting room, storage rooms for warm clothes at verandas, pantries, canteens for patients, dispensers with a utility room in milk dispensing points, storage rooms for patients' clothes and clothes, medical archives	18	—	1	D	1
17.	Premises for processing rubber gloves, for washing and sterilizing table and kitchen utensils in pantry and canteen departments, hairdressing salons for serving patients, dummy	18	2	3	D	2
18.	Storage of radioactive substances, filling and washing in radiological departments, washing in laboratories	18	5	6	D	not allowed
19.	Treatment rooms in rooms for static and mobile tele-gamma therapy, rooms for centralization in rooms for mobile tele-gamma therapy, procedural X-ray therapy rooms, microwave therapy rooms, ultra-high-frequency therapy rooms, thermotherapy rooms, rooms for wrapping up rooms for preparing solutions for radon sculpts, rooms for ultrasound treatment	20	4	5	D	»
20.	Dressing rooms and undressing rooms in hydrotherapy departments	23	inflow according to the balance of the exhaust from the halls with bathrooms, mud procedures		H	2
21.	Corpse storage rooms	2	—	3	D	3
22.	Premises for radon baths, mud treatment halls. shower room with a chair, mud treatment rooms for gynecological procedures	25	4	5	D	does not go down
23.	Premises for storing and reclaiming dirt	12	2	10	D	»
24.	Premises for dressing corpses, issuing corpses, storage rooms for funeral accessories, for processing and preparing for burial of infected corpses, premises for storing bleach	14	—	3	D	»
25.	Premises for disinfection chambers:
a) reception rooms;	16	from the clean compartment	3	D	»
b) dirty compartments:	from the clean compartment	5	D	»
c) unloading (clean) compartments	5	Through dirty compartments
26.	Hydrogen sulfide bath locks	25	3	4	H	not allowed
27.	Undressing rooms for hydrogen sulphide baths	25	3	3	H	»
28.	Room for the preparation of a solution of hydrogen sulfide baths and storage of reagents	20	5	6	D	»
29.	Room for washing and drying sheets, canvases, tarps, mud kitchens	16	6	10	D	»
30.	Inhalation (procedural)	20	8	10	D
31.	Sectional	16	—	4	D	4
32.	Gateways in front of the newborn wards	22	by calculation, but not less than 5 times the exchange	H	not allowed
33.	Premises for discharge of puerperas and irradiation of children with a quartz lamp	22	—	1	H	1
34.	Bathrooms	20	—	50 m3 for 1 toilet and 20 m3 for 1 urinal	D	3
35.	Washrooms	20	—	3	D	3
36.	Enema	20	—	5	D	2
37.	Gateways in boxes and semi-boxes of infectious wards	22	by calculation, but not less than 5 times the exchange		H	not allowed
38.	Small operating rooms	22	10	5	H	1
39.	Premises of hospital pharmacies (see section General self-supporting pharmacies)
Vivariums5)
40.	Quarantine room for the entry of cars with animals. Reception with a warm vestibule	16	1	1	D	1
41.	Washing for dogs, cats, miniature pigs with bathtub and circular shower	22	3	5	D	2
42.	Hot air dryer for dogs and miniature pigs	25	3	5	D	2
43.	Premises for keeping laboratory animals: 6)
a) mice	20:22	10	12	D	2
b) hamsters	20	10	12	D	2
c) guinea pigs	14:16	8	10	D	2
d) rabbits7)	5	8	10	D	2
e) dogs (with walking)	14	8	10	D	2
f) cats	18	10	12	D	2
g) sheep (with access to the walk)	5	10	12	D	2
h) dwarf pigs	18	10	12	D	2
i) roosters	18	10	12	D	2
44.	Staff room	18	1	1	H	1
45.	Cell and inventory warehouse	10	—	1	D	1
46.	Examination of sick animals and disinfection	20	8	10	D	2
47.	Large animal isolator	15	8	10	D	2
48.	Premises for storage and preparation of disinfectants (with a fume hood)	18	according to technologists		D	3
49.	Storing feed and bedding	10	—	1	D	1
Disinfection and washing department
50.	Cleaning and washing inventory:
a) for manual washing;	16	3	5	D	2
b) with a machine wash:
rough cleaning room	16	3	5	D	2
washing	16	5	6	D	2
51.	Sterilization and drying of equipment	18	by calculation	H	not allowed
52.	Storing clean cages, racks, containers, feeders, stretchers, bedding	10	—	1	D	1
53.	Loading into cages of feed, water, bedding	18	—	3	D	1
54.	Temporary storage of animal corpses	2:4	—	3	D	3
Department of keeping experimental animals
Block for keeping small laboratory rodents (mice, rats, guinea pigs) in conditions excluding the penetration of pathogenic flora8) Rooms of the barrier zone.
55.	Compulsory sanitary inspection	25	3	5	D	not allowed
56.	Putting on sterile clothing:	1
- clean area	25	by calculation	H	»
- dirty area	25	»	D	»
57.	Sterilization with steam autoclave	18	»	D	»
58.	Bactericidal hydraulic sluice:	18	3	H	»
- clean area	18	3	H	»
- dirty area	18	3	D	»
59.	Germicidal air lock	18	by calculation	H	»
Barrier area premises3)
60.	Premises for keeping animals SViB and conducting experiments:
a) for mice	20:22	15	10	OCH	»
b) for rats	18	15	10	OCH	not allowed
c) for guinea pigs	14:16	15	10	OCH	»
61.	Room for experiments	20	OCH	»
62.	Staff	18	1	1	OCH	»
63.	Warehouse for sterile equipment, feed, bedding	18	1	1	OCH	»
64.	Distribution and distribution of feed	18	1	1	OCH	»
65.	Sterilizing water	18	1	1	OCH	»
Unit for keeping laboratory animals under normal conditions
66.	Premises for keeping laboratory animals (except for rams)	on items 50a: 50i
67.	Rooms for experiments	18	1	3	D	2
68.	Surgical section premises:
a) preoperative with sterilization	18	1	2,5	H	not allowed
b) operating room, postoperative room, intensive care room for recovering animals	20:22	by calculation	OCH	—
69.	Premises for infecting animals and working with them:
a) premises for toxicological studies	18
b) premises for infecting animals (manipulation, boxes for control animals)	18	5	6	D	not allowed
c) personnel and specialists	18	—	1,.5	H	»
d) storage of clean: inventory, feed, bedding	18	—	1	D	»
e) waste collection	10	—	10	D	»
Department of Veterinary Services
70.	Doctor's office	18	1	1	H	»
71.	Sectional	16	3	3	D	»
72.	Laboratory diagnostics with an autopsy box	18	1	3	D	»
78.	Storage of medicines	18	1	3	D	not allowed
74.	Sick animal isolation unit:
a) room for patients with a gateway	on paragraphs 50a-50i
b) storage of feeders, cages, inventory, storage of bedding and feed	10	—	1	D	»
c) staff	18	1	1	H	»
d) cleaning items with a tap, ladder and drying	10	—	10	D	»
Feed preparation department
75.	Preparation of vegetables from the washing machine, preparation of grain mixtures	16	3	4	D	»
76.	Digestive hall	16	by calculation	»
77.	Washing-kitchen utensils	18	4	6	D	»
78.	Sterilization of feed	18	1	3	D	»
79.	Refrigerated food chamber	2-4	—	—	D	»
II. General self-supporting pharmacies
80.	Public service halls	16	3	4	D	3
81.	Work rooms or isolated work areas in the service hall, forwarding rooms for receiving and placing orders from the attached institution, prescription	18	2	1	H	1
82.	Assistant, aseptic, defective, gateway; billet and filling with a sluice, seaming and control-marking sterilization-autoclave, sterilization distillation	18	4	2	H	1
83.	Packaging, control and analytical room, washing, sterilization solutions, distillation and sterilization room, cocktail, unpacking	18	2	3	D	1
84.	Premises for the preparation of dosage forms under aseptic conditions	18	4	2	OCH	not allowed
85.	General stock storage rooms:
a) medicinal substances, finished medicinal products, including thermolabile and medical supplies; dressings	18	2	3	D	1
b) medicinal plant materials	18	3	4	D	3
c) mineral waters, medical glass and recyclable shipping containers, glasses and other optical items, auxiliary materials, clean dishes	18	—	1	D	1
d) poisonous drugs and drugs	18	—	3	D	3
86.	Flammable and flammable liquids	18	—	10	D	5
87.	Disinfectants and acids, disinfection with sluice	18	—	5	D	3
88.	Administrative premises	on PP. 13, 19, 20, 25, 26, 44 of this table
89.	Refrigeration machine room	4	—	3	D	3
90.	Electrical control room	15	—	1
SANITARY-EPIDEMIOLOGICAL STATIONS (SES)
Radiological group
91.	Laboratory room	18	3	5	D	not allowed
92.	Bacteriological group Premises for doctors and laboratory assistants study rooms	18	—	1,5	H	»
93.	Room for serological research, sowing, rooms for express diagnostics	18	5	6	D	»
94.	Boxes	18	6	5	H	»
95.	Preboxes	18	—	10	D	»
96.	Entomology premises for helminthological research, environment	18	5	6	D	»
97.	Washing rooms
a) without washing machine	18	5	6	D	»
b) with a washing machine	18	3	5	D	»
98.	Sterilizing autoclave	18	—	3	D	not allowed
99.	Thermal rooms	As required by the technology The internal air temperature is provided by the technological equipment
100.	Rooms for receiving registration, sorting and issuing test results	18	—	3	D	»
Virology Department and Laboratory of the Department of Highly Dangerous Infections
101.	Rooms for the identification of respiratory, enteric viruses, for the preparation of tissue culture
a) working rooms of doctors and laboratory assistants	18	5	6	D	»
b) boxes	18	5	6	D	»
c) preboxes	18	6	5	H	»
d) boxes	18	6	5	H	»
e) pre-boxes for preparing tissue culture	18	—	10	D	»
102.	Room for the identification of arboviruses:
a) working rooms of doctors and laboratory assistants	18	5	6	D	not allowed
b) boxes	18	5	6	D	»
c) preboxes	18	—	10	D	»
103.	Rooms for bacteriological research, rooms for processing traps and preparing baits,	18	3	6	D	»
104.	Rodent infestation rooms (bioassay)	18	8	10	D	»
105.	Corridors	18	By the balance of the branch		H	»
Dairy kitchens
106.	Brewhouse	5	By calculation		D	»
107.	Mashed potatoes workshop	16	3	H	»
108.	Packing milk and juices	16	2	3	D	»
109.	Sterilization of finished products
a) "clean zone"	16	6	—	H	not allowed
b) "dirty zone"	16	—	4	D	»
110.	Washing flasks	20	4	6	D	»
111.	Milk intake	16	—	1	D	»
112.	Biolact preparation	16	12	12	H	»
113.	Filtration and milk filling room	16	19	19	H	»
114.	Premises for heat treatment of milk and preparation of milk mixtures	16	3	4	D	»
115.	Cooling room	16	3	4	D	»
116.	Room for the preparation of lactic acid products and lactic acid mixtures:
a) room for the preparation of starter cultures	16	3	4	H	»
b) kefir shop	16	20	20	H	»
c) shop for acidophilic milk	16	20	20	H	»
d) thermostatic	16	12	12	H	»
117.	Premises for the preparation and packaging of cottage cheese	16	3	4	D	»
118.	Premises for the preparation of fruits, fruits, vegetables	16	3	4	D	»
119.	Premises for the preparation of fruit and vegetable mixtures	16	12	12	H	»
120.	Premises for preparation of fish, meat, preparation of fish and meat dishes	16	3	4	D	»
121.	Laboratory	18	2	3	D	»
122.	Premises for receiving containers for finished products	16	4	6	D	»
123.	Premises for receiving raw materials	16	3	—	D	»
124.	Washing and sterilization room	20	4 into the "clean" zone inflow	6 exhaust - through the "dirty" area	D	»
125.	Washing kitchen utensils	20	4	6	D	»
126.	Washing room:
a) milk pipelines	20	4	6	D	»
b) inventory	20	4	6
127.	Expedition loading	16	3	—	H	»
128.	Refrigeration machinery room	16	—	3	D	»
129.	Temporary storage room	12	—	1	D	»
milk	periodic ventilation
130.	Dry food pantry	12	—	2	H	»
131.	Pantry of vegetables and fruits	4	4 (per day)	4 (per day)	D	»
132.	Premises for storing and receiving containers	12	4	6	D	1
133.	Pantry of household equipment	12	2	2	D	»
134.	Linen	16	2	1	D	»
135.	Material pantry	12	—	1	D	»
136.	Chilled food waste chamber with a vestibule	2	—	10	D	not allowed
137.	Service and utility rooms	under section I of this table
Donor point
138.	Breast milk pumping room	22	—	2	H	»
139.	Sterilization room	18	—	3	H	»
140.	Filtration and milk filling	16	19	19	H	»
141.	Heat treatment	16	3	4	D	»
142.	Cooling room	16	3	4	H	»
Milk distribution points
143.	Handout	16	2	2	H	1
144.	Refrigerating chamber (for finished products)	2	Periodic ventilation
145.	Premises for receiving and storing dishes from the population	12	—	1	D	1
146.	Cashbox	18	—	1	H	»
147.	Pantry of disinfectant solutions and cleaning equipment	16	—	5	D	3
Sauna
148.	Expected	18	—	3	H
149.	Corridor	18	—	2	H
150.	Dressing room	22	—	3	H
151.	Shower room	22	—	8	D
152.	Steam room10)	100/80 (85/80)	—	5	D
153.	Cooling room inside the sauna	1	—	4	D
154.	Restroom	26	—	3	H
155.	Massage room	25	—	4	D
156.	Solarium	23	—	3	H
157.	Restroom	22	—	50 m3 for 1 toilet	D

Source: Manual for the design of healthcare institutions (to SNiP 2.08.02-89)

Air exchange rate in the premises of preschool organizations

Premises	t ° (С) -not lower	Air exchange rate per hour
		In IA, B, D climatic regions		In other climatic regions
		inflow	hood	inflow	hood
Reception, playroom nursery group cells	22-24	2,5	1,5	—	1,5
Reception, playroom junior, middle, senior group cells	21-23	2,5	1,5	—	1,5
Bedrooms of all group units	19-20	2,5	1,5	—	1,5
Dressing nursery groups	22-24	—	1,5	—	1,5
Dressing preschool groups	19-20	2,5	1,5	—	1,5
Medical premises	22-24	2,5	1,5	—	1,5
Halls for muses. and gymnastics	19-20	2,5	1,5	—	1,5
Walking verandas	not less than 12	by calculation, but not less than 20 m3 per child
Hall with pool bathroom	not less than 29
Locker room with shower pool	25-26
Heated passages	not less than 15

Source: Sanitary and Epidemiological Rules and Norms SanPiN 2.4.1.3049-13. Appendix 3

Air exchange concept

Air exchange is a quantitative parameter that characterizes the operation of the ventilation system in closed rooms. In other words, air is exchanged to remove excess heat, moisture, harmful and other substances in order to ensure an acceptable microclimate and air quality in the manned room or work area. Correct organization of air exchange is one of the main goals when developing a ventilation project. The intensity of air exchange is measured in multiples - the ratio of the volume of supplied or removed air for 1 hour to the volume of the room. The multiplicity of the supply or extract air is determined by the regulatory literature. Now let's talk a little about SNiPs, joint ventures and GOSTs, which dictate the necessary parameters to us to maintain comfortable conditions in office and residential premises.