TABLE4-A PRESSURE RELATIONSHIP AND VENTILATION REQUIREMENTS FOR GENERAL ACUTE CARE

HOSPITALS, SKILLED NURSING FACILITIES, INTERMEDIATE CARE FACILITIES, CORRECTIONAL TREATMENT CENTERS, OUTPATIENT FACILITIES, AND LICENSED CLINICS ____ = __ _= __ I-:------ B _

2016 CALIFORNIA MECHANICAL CODE

VENTILATION AIR

I -

Yes

Yes 2

Yes Yes 2

!II

I

II

II II

73

VENTILATION AIR

TABLE 4-A (continued) PRESSURE RELATIONSHIP AND VENTILATION REQUIREMENTS FOR GENERAL ACUTE CARE

HOSPITALS, SKILLED NURSING FACILITIES, INTERMEDIATE CARE FACILITIES, CORRECTIONAL TREATMENT CENTERS, OUTPATIENT FACILITIES, AND LICENSED CLINICS -C - : ----

I I AIR BALANCE MINiMUM AIR - ALL AIR 1 RELATIONSHIP TO MINIMUM AIR 1 CHANGES OF MINIMUM TOTAL EXHAUSTED

1 _ __ _ _ _____ 100%1 IRadiologicallImaging

Angiography room P 12 5 15 II 1nterventionallmagzng procedure room I P 1 12 5 15

X-ray (diagnostic and treatment) NR 6 2 6 CT Scan I NR 6 2 6 MR1 room NR 6 2 6 Fluoroscopy room N 6 2 6 Yes Dark room N 12 2 12 Yes Negative-pressure x-ray room N 12 2 12 Yes Ultra sound room NR 6 2 6 > Waiting area N I 12 2 12 Yes

II I:,mm" 1 6 _ _ J _ _ _ _

___ --- - - -- -- --- -- - --- - - - I - - - L - [or - -cl_oset, _ __ ________ !! ___ + ___ - _ I - _.1 _ _ 10 __ _

Stenlzzer eqUipment room N I - - I 10 Yes - - -- --- - -- -- - --- - -- - - --

_ ____ __ _ __ _ ___ --NI3... ____ _ -j __ l.... _ __ 1 _ _ _ _ __ rooms N - - 1 10 ___ ..!<:

!.?_odyrf!.'!aration _ _____ ____ _ __ I __ NR_ _ _ _ _ ___ J __ _J 10 ____ __ __j

Dining,.()()'!'_ _ __ . ____ _ _ ___ _.1 _ .313. __ _ _ 10 _ _ l.. _ __ 1_ _ 10 __ __ ___ _ Dishwashing room 1 N i l 10 Yes

- -I--- iiR - - 1- - --.r ---=-----1 - - 2- - --

- -r-- NR--1

10- --.-1 ==-2 -_ L = io - - __ __ _ _____ _____ J... _ _ l! _ _ +- _ = ___ 1 __ _ ___ __ ___ _ _

.. (l!2 ____ __ stor ___ a_ \ P II 2 1 2 11 _ _ __ _ 2 =_ _ I NR . 8 1 ____ ____ .! Yes

I Central medical and surgical supply: I I I Soiled or decontamination room N; 2 I 4 Yes

:R 2 1 ___ __ _____ J - - '----------1': - : -r-: r -: -,

Biochemistry P 6 2 6 Cytology N 6 2 6 Yes Glass washing N 10 2 10 Yes Histology N 6 2 6 Yes Microbiology N 6 2 6 Yes Pathology N 6 2 6 Yes

P 6 2 6 Sterilizing N 10 2 10 Yes Media P 4 2 4 I -InfectiOUS disease and virus I N 6 2 6 Yes Bacteriology N 6 2 6 L Yes > hot lab- ----------- -I -N - - T - - - !- - - I 6 - - Yes----j

_ - - if - -\ - - 12 - --t... --; -----.J ____

74 2016 CALIFORNIA MECHANICAL CODE

VENTILATiON AIR

TABLE 4-A (continued) PRESSURE RELATIONSHIP AND VENTILATION REQUIREMENTS FOR GENERAL ACUTE CARE

HOSPITALS, SKILLED NURSING FACILITIES, INTERMEDIATE CARE FACILITIES, CORRECTIONAL TREATMENT CENTERS, OUTPATIENT FACILITIES, AND LICENSED CLINICS

______ - ___ .• ___-_ D -___r-___ E

I I CONDITIONED AIR NOT 100% O.S.A

AIR BALANCE MlNllflUMArR

f4REA [)§I§lNATlON__ ___ ___ _ I

RELATIONSHIP TOj MINIMUM AIR '. CHANGES OF ADJACENT [HANGES IF 100%1 OUTDOOR AIR

AREAS8 O.S.A. I PER HOUR _ __ __ _"_ _ __________ ---1 _______ _

I Physical therapy Soiled workroom (utilitv room)

N 6 2 N 4

Clean workroom P 4 Autopsr 12 __ 1

i N --------- -t-I Toilet room Shower room

:- Wl.dti':;g area primary care clinic ---- --- -- T N ---I --J() ----1--- ---- ---------- ---- -- --- --------t----

StafJsleep rooms NR 2 __ .1...- ---l-

,A10rgues and autopsy rooms N I 10 ! Pediatri;;play area ---- -------- -- NR -- - ---- 6--- --L_________ ___ _ _____________ . ___ _ Recreation/activit)' room

: Lactation

Speech Iherapylaudiolog\, room

------ - --r--- -

I Occupational therapy r;------------------------ --. Endoscope cleaning/processing

L

-

NR I

NR ------ - I

NR

NR ------- ,----

NR

NR - - ----------

N P = Positive NR = No requirement for continuous directional control N = Negative

6 ---I

6

2

2

2 --6 10

The pressure relationship of the enrire emogeJlcy department shall be negative to other adjacent areas.

2 2 .2

2 2 2 2 2

2

2

2

MINIMUM TOTAL AIR CHANGES

PER HOUR

6 10 6 12 10 10 10 4

6

I(J

F

ALL AIR EXHAUSTED DIRECTLY TO OUTDOORS

Yes Yes Yes

Yes!

-----j

: Air may be recircuLated if a high-ejjiciency particulate air (HEPA)/ilter with a minimum ejficiency of99. 97 percent or a minimum t:Uiciency reporting vaLue (MERV) of 17 is installed in the return air duct which serves the waiting area. The term "traullla room" as used here is the operating room space in the emergency department or other trauma reception arca that is used/or emergenct' surgery. The/irst aid room andlpr "emergency room" usedfor initial treatment of accident victims may he ventilated as notedfor the "treatment rooms. "

4 The anteroom shall have positive air pressure in relation to the airborne injection isolation room. A door louver, transfer grille, or other acceptable means shall be provided to allmt' jiJr air/luwfrom the antemom to the airborne infection isolation room. The airborne infection isolatiol1 room shall hat'e negative pressure in relation to the anteroom. and the adjoining toilet rOOIll shall have negative pressure in relation to the airborne infection isolation room. Nega-tive pressure shall be achieved by balancinR the exhaust cfm to no less than 75 cfm (35.4 Us) greater than the supplv cfmfar each airborne injection isola-tion mom the anteroom serves. The overall area consisting of the amemom, airborne intection isolation mom, and adjoininR toilet mom shall have (/n equal air balance in relation to the corridor. Exception: For correctional treatment centers, the location and design of the air transfer device shall not compromise the safetv, security and protection of staff inmates, and propcrtv

5 Positive-pressure shall be achieved by balancing the supply cfm to not less than 75 cfm (35.4 L/5) greater than the exhaust and return cfmfor each protec-tive environment room the anteroom serves. The anteroom shall have negative air pressure in relation to the protective environment roOIll. A door /ouvel; transfer grille. or other acceptable means shall be provided to allowfiw airf/rmfrom the protective environment room to the anteroom. The protective environment room shall have positive-pressure in rela-tion to the anteroom and adjoining toilet room. Positive pressure shall he achieved by halancing the supplv cfm to not less than 75 c/m (35.4 greater than the exhaust Lind return efm. 7lie overall area consisting o/the anteroom, prutective environment room. WId adjoining toilet room shall hm'c an equal air balance in relation to the corridOl: Exception: For correctional treatment centers, the location and design of the air tram!er device shall not compromise the safety. sectlritv. and protection of statt: inmates, llnd property.

7 Cvstoscopy may have no requirement/or continuous directional control when approved by Authority Having Jurisdiction. 8 For operating rooms, cardiac catheterization labs, anRiographv rooms. cystoscopy rooms. de/iven' rooms. cesarean operating rooms. newborn intensive

care, intensive care units. and nurseries provide approximatl'lv 15% excess supplv air to the room or a sutflcient quantity of excess supplv air to maintain an appropriate positive air halance based on the room tightness and number of doors. For all rooms not listed in this footnote or not listed in Table 320.0 II requiring either a positive or negative air balance, prOl'ide approximately 10% differential cfm between supplv and return/exhaust airflow but not less than 25 cfin (/1.8 Lil') differential shall he provided regardless ojmom size. Roomfilflclion. size. and tightness may be considered lIhen determining the difF:r-ential aiiflovc required. Where continuous directional control is not required, variations between supply cfm and return or exhaust elm shall be minimized.

9 Intensive care patient rooms that contain a modular toiletlsink combination unit 11'ithin the room shall be provided with a minimum of 7'; cfm (35.4 L/,) of exhaust directly OFer the modular toiletlsink combination unit.

2016 CALIFORNIA MECHANICAL CODE 75