ASHRAE 170 ADD E-2014 Ventilation of Health Care Facilities.pdf

1、ANSI/ASHRAE/ASHE Addendum e toANSI/ASHRAE/ASHE Standard 170-2013Ventilation ofHealth Care FacilitiesApproved by ASHRAE on November 28, 2014; by ASHE on November 17, 2014; and by the American National Standards Insti-tute on December 1, 2014.This addendum was approved by a Standing Standard Project C

2、ommittee (SSPC) for which the Standards Committee has estab-lished a documented program for regular publication of addenda or revisions, including procedures for timely, documented, con-sensus action on requests for change to any part of the standard. The change submittal form, instructions, and dea

3、dlines may beobtained in electronic form from the ASHRAE website (www.ashrae.org) or in paper form from the Manager of Standards. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) or from ASHRAE Cus-tomer Service, 1791 Tullie Circle, NE, Atlanta, GA 303

4、29-2305. E-mail: ordersashrae.org. Fax: 678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For reprint permission, go towww.ashrae.org/permissions. 2014 ASHRAE ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national vol

5、untary consensus standard developed under the auspices of ASHRAE.Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved thisstandard as an ANS, as “substantial agreement reached by directly and materially affected interest categor

6、ies. This signifies the concurrenceof more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that aneffort be made toward their resolution.” Compliance with this standard is voluntary until and unless a legal jurisdiction makes

7、 compliancemandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The ProjectC

8、ommittee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, allmust be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all ProjectCommittees.The Manager of Standards of

9、ASHRAE should be contacted for:a. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c. offering constructive criticism for improving the Standard, ord. permission to reprint portions of the Standard.DISCLAIMERASHRAE uses its best efforts to promulgat

10、e Standards and Guidelines for the benefit of the public in light of available information andaccepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components,or systems tested, installed, or operated in accordance with ASHRAEs

11、 Standards or Guidelines or that any tests conducted under itsStandards or Guidelines will be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for

12、ratingpurposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providingother information that may serve to guide the industry.The creation of ASHRAE Standards and Guidelines is determined by the need for them,and conform

13、ance to them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standing Standard Project Committee 170CognizantTC:TC 9.6, Healthcare F

14、acilitiesSPLS Liaison: John F. DunlapPaul T. Ninomura, Chair* Michael R. KeenChris P. Rousseau, Co-Vice Chair and Secretary* Peter H. Langowski*Michael P. Sheerin, Co-Vice Chair* Michael F. Mamayek*John M. Dombrowski* Farhad Memarzadeh*Douglas S. Erickson* Richard D. Moeller*Jonathan J. Flannery* Ty

15、ler NinomuraJames (Skip) Gregory* Russell N. Olmsted*Richard D. Hermans Heather L. Platt*Nolan Hosking* Gordon P. Sharp*Denotes members of voting status when the document was approved for publicationASHRAE STANDARDS COMMITTEE 20142015Richard L. Hall, Chair James W. Earley, Jr. Mark P. ModeraDouglass

16、 T. Reindl, Vice-Chair Steven J. Emmerich Cyrus H. NasseriJoseph R. Anderson Patricia T. Graef Heather L. PlattJames D. Aswegan Rita M. Harrold Peter SimmondsCharles S. Barnaby Adam W. Hinge Wayne H. Stoppelmoor, Jr.Donald M. Brundage Srinivas Katipamula Jack H. ZarourJohn A. Clark Debra H. Kennoy J

17、ulia A. Keen, BOD ExOWaller S. Clements Malcolm D. Knight Bjarne W. Olesen, CODavid R. Conover Rick A. LarsonJohn F. Dunlap Arsen K. MelkovStephanie C. Reiniche, Manager of StandardsASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc

18、.ANSI is a registered trademark of the American National Standards Institute. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE/ASHE Addendum e t

19、o ANSI/ASHRAE/ASHE Standard 170-2013 1(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not been pro-cessed according to the ANSI requirements for a standardand may contain material that has not bee

20、n subject topublic review or a consensus process. Unresolved objec-tors on informative material are not offered the right toappeal at ASHRAE or ANSI.)FOREWORDThis addendum clarifies that for spaces with pressurerelationship requirements in Table 7.1, “Design Parameters,”controls shall not be allowed

21、 that change the pressure rela-tionship between positive and negative. This requirement waspreviously only applicable to AII Rooms.Note: In this addendum, changes to the current standardare indicated in the text by underlining (for additions) andstrikethrough (for deletions) unless the instructions

22、specifi-cally mention some other means of indicating the changes.7.1 General Requirements. The following general require-ments shall apply for space ventilation:a. Spaces shall be ventilated according to Table 7.1.3. For design purposes, the minimum number of total airchanges indicated shall be eith

23、er supplied for positivepressure rooms or exhausted for negative pressurerooms. Spaces that are required in Table 7.1 to be at anegative pressure relationship and are not required tobe exhausted shall utilize the supply airflow rate tocompute the minimum total air changes per hourrequired. For space

24、s that require a positive or negativepressure relationship, the number of air changes canbe reduced when the space is unoccupied, providedthat the required pressure relationship to adjoiningspaces is maintained while the space is unoccupiedand that the minimum number of air changes indicatedis re-es

25、tablished anytime the space becomes occupied.Controls intended to switch the required pressure rela-tionships between spaces from positive to negative,and vice versa, shall not be permitted. Air change ratesin excess of the minimum values are expected in somecases in order to maintain room temperatu

26、re andhumidity conditions based upon the space cooling orheating load.Addendum e to Standard 170-2013Relocate the prohibition against switching pressure rela-tionships for AII Rooms from footnote u of Table 7.1 to ageneral requirement in Section 7.1(a)(3) as shown. Theremainder of Section 7.1 is unc

27、hanged.Revise Table 7.1 as shown below. The remainder of Table7.1 is unchanged. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.2 ANSI/ASHRAE/ASHE Addendum

28、 e to ANSI/ASHRAE/ASHE Standard 170-2013TABLE7.1DesignParametersFunctionofSpacePressureRelationshiptoAdjacentAreas(n)MinimumOutdoorachMinimumTotalachAllRoomAirExhausted DirectlytoOutdoors(j)AirRecirculatedbyMeansofRoomUnits(a)DesignRelativeHumidity(k),%DesignTemperature(l),F/CSURGERYANDCRITICALCAREO

29、peratingroom(ClassBandC),(m),(n),(o)Positive420N/RNo20-6068-75/20-24Operating/surgicalcystoscopicrooms,(m),(n),(o)Positive420N/RNo20-6068-75/20-24Deliveryroom(Caesarean)(m),(n),(o)Positive420N/RNo20-6068-75/20-24DIAGNOSTICANDTREATMENTBronchoscopy,sputumcollection,andpentamidineadministration(n)Negat

30、ive212YesNoN/R68-73/20-23Autopsyroom(n)Negative212YesNoN/R68-75/20-24 n.Ifpressure-monitoringdevicealarmsareinstalled,allowancesshallbemadetopreventnuisancealarms.Short-termexcursionsfromrequiredpressurerelationshipsshallbeallowedwhiledoorsaremovingortemporarilyopen.Simplevisualmethodssuchassmoketra

31、il,ball-in-tube,orflutterstripshallbepermittedforverificationofairflowdirection.u.TheAIIroomdescribedinthisstandardshallbeusedforisolatingtheairbornespreadofinfectiousdiseases,suchasmeasles,varicella,ortuberculosis.SupplementalrecirculatingdevicesusingHEPAfiltersshallbepermittedintheAIIroomtoincreas

32、etheequivalentroomairexchanges;however,theminimumoutdoorairchangesofTable7.1arestillrequired.AIIroomsthatareretrofittedfromstandardpatientroomsfromwhichitisimpracticaltoexhaustdirectlyoutsidemayberecirculatedwithairfromtheAIIroom,providedthattheairfirstpassesthroughaHEPAfilter.WhentheAIIroomisnotuti

33、lizedforairborneinfectionisolation,thepressurerelationshiptoadjacentareas,whenmeasuredwiththedoorclosed,shallremainunchangedandtheminimumtotalairchangerateshallbe6ach.Switchingcontrolsforreversibleairflowprovisionsshallnotbepermitted. ASHRAE (www.ashrae.org). For personal use only. Additional reprod

34、uction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.POLICY STATEMENT DEFINING ASHRAES CONCERNFORTHE ENVIRONMENTAL IMPACT OF ITS ACTIVITIESASHRAE is concerned with the impact of its members activities on both the indoor and o

35、utdoor environment. ASHRAEsmembers will strive to minimize any possible deleterious effect on the indoor and outdoor environment of the systems andcomponents in their responsibility while maximizing the beneficial effects these systems provide, consistent with acceptedstandards and the practical sta

36、te of the art.ASHRAEs short-range goal is to ensure that the systems and components within its scope do not impact the indoor andoutdoor environment to a greater extent than specified by the standards and guidelines as established by itself and otherresponsible bodies.As an ongoing goal, ASHRAE will

37、, through its Standards Committee and extensive technical committee structure,continue to generate up-to-date standards and guidelines where appropriate and adopt, recommend, and promote those newand revised standards developed by other responsible organizations.Through its Handbook, appropriate cha

38、pters will contain up-to-date standards and design considerations as the material issystematically revised.ASHRAE will take the lead with respect to dissemination of environmental information of its primary interest and will seekout and disseminate information from other responsible organizations th

39、at is pertinent, as guides to updating standards andguidelines.The effects of the design and selection of equipment and systems will be considered within the scope of the systemsintended use and expected misuse. The disposal of hazardous materials, if any, will also be considered.ASHRAEs primary con

40、cern for environmental impact will be at the site where equipment within ASHRAEs scopeoperates. However, energy source selection and the possible environmental impact due to the energy source and energytransportation will be considered where possible. Recommendations concerning energy source selection should be made byits members. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ASHRAE 1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org12/14