Uniform Plumbing Code - IAPMO

1 2019 Technical CommitteeMeeting MonographDenver, Colorado | Sheraton Denver Downtown HotelApril 29 30, 2019 UniformPlumbingCode TABLE OF CONTENTS I Tentative Agenda II Tentative Order of Discussion III Uniform Plumbing code Change Public Comments IV Legionella Task Group Report iii 2019 Uniform Plumbing code Technical Committee Meetings Sheraton Denver Downtown Hotel, Denver, CO April 29 - 30, 2 019 AGENDA I. Call to Order II. Chairman Comments III. Announcements IV. Self -I ntroductions V. Review and Approval of Agenda VI.

2 Approval of Minutes from Previous Meeting (Ontario, CA on May 17-18, 2018) VII. Report of Legionella Task Group (Chair) VIII. Discussion of Public Comments to the Uniform Plumbing code IX. Other business X. Next scheduled meeting XI. Adjournment iiiivTENTATIVE ORDER OF DISCUSSION 2019 PROPOSED PUBLIC COMMENTS TO THE Uniform Plumbing code The following is the tentative order of discussion on which the proposed public comments will be discussed at the Technical Committee Meeting. Indented public comments are those being discussed out of numerical order.

3 Item # 003 Item # Item # 005 Item # 009 Item # 012 Item # 019 Item # 021 Item # 023 Item # 024 Item # 027 Item # 028 Item # 029 Item # 030 Item # 031 Item # 032 Item # 036 Item # 037 Item # 040 Item # 042 Item # 043 Item # 047 Item # 048 Item # 049 Item # 055 Item # 056 Item # 057 Item # 058 Item # 060 Item # 061 Item # 062 Item # Item # 063 Item # 064 Item # 066 Item # 070 Item # 081 Item # 084 Item # Item # 085 Item # 086 Item # 095 Item # 098 Item # 099 Item # 101 Item # 103 Item # 131 Item # 143 Item # 107 Item # 109 Item # 112 Item # 118 Item # 120 Item # 121 Item # 123 Item # 125 Item # 126 Item # 129 Item # 133 Item # 135 Item # 140 Item # 145 Item # 147 Item # 148 Item # 154 Item # 155 Item # 157 Item # 160 Item # 163 Item # 166 Item # 167 Item # 172 Item # 173 Item # 174 Item # 179 Item # 180 Item # 184 Item # 186 Item # 193 Item # 194 Item # 195 Item # 196 Item # 203 Item # 204 Item # 207 Item # 208 Item # 224 Item # 228 Item # 235 Item # 233 Item # 234 Item # 236 Item # 238 Item # 240 Item # 241 Item # 244 Item # 245 Item # 246 Item #

4 247 vviUUnniiffoorrmm PPlluummbbiinngg CCooddee PPuubblliicc CCoommmmeennttss ProposalsEdit ProposalItem #: 003 UPC 2021 Section: , : Phillip H RibbsPHR ConsultantsRECOMMENDATION:Add new - D - Dead Leg. A section of pipe which contains water that has no flow, does not circulate, remains stagnant, or is infrequently used. Workmanship. Dead Legs. Dead legs shall be made as short as possible and shall contain a means of flushing or located in line withdownstream :Dead legs are currently silent in the code and should be addressed to avoid the growth of bacteria in water ACTION: ACCEPT AS AMENDED BY THE TC Amend proposal as - D - Dead Leg.

5 A section of pipe which contains water that has no flow, or does not circulate, remains stagnant, or is infrequently used. Workmanship. Dead Legs. Dead legs shall be made as short as possible and shall contain a means have a method of flushing or located inline with downstream STATEMENT:The modification will clarify the intent of the section in regards to the definition and provisions pertaining to ELIGIBLE TO VOTE: 21 VOTING RESULTS: AFFIRMATIVE: 18 NEGATIVE: 3 EXPLANATION OF NEGATIVE: BALLANCO: There was no technical justification submitted to support the change or the modification.

6 I believe the requirement shouldbe rejected. The provisions are very subjective and difficult to enforce even if technical justification was : I agree with the other negative responders - this is a good idea, but very difficult to get into a useable code . Is a vacationhouse one giant dead leg? What about that extra bathroom not being used?FEEHAN: This will cause confusion and will be trouble in the field. There are many dead legs installed for future #: 003 Comment #: 1 Appended CommentsEdit CommentPUBLIC COMMENT 1 code Year: 2021 UPCS ection #: , : Michael CudahyPPFARECOMMENDATION:Delete text without substitutionRequest to reject the code change proposal by this public :PPFA recommends disapproval of Item # 003.

7 Limiting potential dead legs is a good idea, but very difficult to getinto a usable code . Is a vacation house one giant dead leg? What about that extra bathroom not being used? It's anenforcement nightmare as well. Having a method of flushing is also a good design idea, but would it ever be used?At some point in time , every pipe has no flow, but is not a dead leg. 2 ProposalsEdit ProposalItem #: 2021 Section: SUBMITTER: UPC Technical Committee ProposalRECOMMENDATION:Add new E Expansion Tank. A vessel used to protect closed water heating systems from excessive :The term expansion tank is used throughout the code and the definition is necessary for the enforcement of ACTION: ACCEPT AS SUBMITTED TOTAL ELIGIBLE TO VOTE: 21 VOTING RESULTS: AFFIRMATIVE: 8 NEGATIVE: 13 Note:Item # failed to achieve the necessary 2/3 affirmative vote of return ballots.

8 In accordance with Section of the Regulations Governing Committee Projects, a public comment is requested for this proposal. Thetechnical committee will reconsider this proposal as a public OF AFFIRMATIVE: ADLER: I am amenable to some appropriate modification to the definition. Remember, it is a definition not a code requirement. I simplynoticed that while we have several mentions of expansion tank within the code , there was, in fact, no definition included in the code ,so I sought to remedy. EXPLANATION OF NEGATIVE: AGUILAR: An expansion tank can be used in other systems besides a hot water system therefore the definition should not berestricted to only hot water : The definition is incorrect.

9 It states that an expansion tank is for closed water heating systems only. Yet, Section an expansion tank on a cold water piping system. Additionally, expansion tank is a common term used in the industry thatdoes not require a special : This definition restricts expansion tanks to water heating systems. Section requires an expansion tank in the cold-water distribution system downstream of a pressure regulator regardless of the presence of a water heating system. If the definitionwould read A vessel used to protect a closed water system from excessive pressure due to thermal expansion I would agree with theintroduction of the new : Expansion tanks have other uses, the definition is : The use of expansion tanks is not limited to heat : Expansion tank is a common term used in the industry and does not require a , SEWELL: The definition of an expansion tank should not be restricted only to a hot water : The definition should not have the word heating.

10 3 Item #: #: 1 NIELSEN: Expansion tanks are not only for heating : Expansion tank is a common term used in the industry and does not require a : The definition is too restrictive as expansion tanks are used in cold water piping systems as : The proposed definition is too restrictive. Appended CommentsEdit CommentPUBLIC COMMENT 1 code Year: 2021 UPCS ection #: : Bob AdlerSelfRECOMMENDATION:Revise textRequest to replace the code change proposal by this public E Expansion Tank. A vessel used to protect closed water heating or cooling systems from excessive :The proposed change will address the TC's concern that expansion tanks are not only used for heating systems.