Original Notice.

     Preproposal statement of inquiry was filed as WSR 03-08-027.

     Title of Rule: Amendment of chapters 51-56 and 51-57 WAC (adoption and amendment of the 2003 Edition of the Uniform Plumbing Code and Plumbing Code Standards).

     Purpose: To consider amendments and adoption of the 2003 Edition of the Uniform Plumbing Code and Plumbing Code Standards published by the International Association of Plumbing and Mechanical Officials.

     Statutory Authority for Adoption: RCW 19.27.031 and 19.27.074.

     Statute Being Implemented: Chapters 19.27 and 34.05 RCW.

     Summary: The proposed rules include adoption of the 2003 Edition of the Uniform Plumbing Code and Standards, with amendments (including Appendices A, Sizing the Water Supply System, B Explanatory notes on combination waste and vent systems, and I, Installation Standards). Amendments providing greater safety and flexibility than the published version include expanded options for relief valve drains and water hammer arrestors.

     Reasons Supporting Proposal: RCW 19.27.031 and 19.27.074.

     Name of Agency Personnel Responsible for Drafting and Implementation: Krista Braaksma, Olympia, Washington 98504-8350, (360) 725-2970; and Enforcement: Local jurisdictions.

     Name of Proponent: Washington State Building Code Council, governmental.

     Agency Comments or Recommendations, if any, as to Statutory Language, Implementation, Enforcement, and Fiscal Matters: The council is seeking comments on the issues proposed in the rules shown below.

     Rule is not necessitated by federal law, federal or state court decision.

     Explanation of Rule, its Purpose, and Anticipated Effects: The proposed rule will update the state code by referencing the 2003 Edition of the Uniform Plumbing Code and Uniform Plumbing Code Standards (UPC), published by the International Association of Plumbing and Mechanical Officials. Amendments are proposed to (a) coordinate the existing state amendments with the updated UPC, (b) retain some of the existing language from the 2000 Edition of the UPC where it was felt necessary to protect public health, and (c) introduce some additional options for residential water heater drains to increase code flexibility.

     Proposal Changes the Following Existing Rules:

Chapter 51-56 WAC:

     1. The following sections contain editorial changes for consistency within this code and with other model codes, and to correct references and dates: Sections 003, 008, 102.4, 413.0, 501, 502, 301.1.3, 314.5.1, 512-525, 603.

     2. Section 007: Clarification that codes referenced in the model code must be specifically adopted by the council or local jurisdictions or the pertinent state code will take precedence.

     3. Section 208: The existing state amendment is deleted; the conflict with the Mechanical Code no longer exists.

     4. Section 301.1.1: The existing state amendment is deleted. Code change at the national level makes the language equivalent to the existing state code.

     5. Section 316.1.6: The existing state amendment is deleted. Code change at the national level makes the language equivalent to the existing state code.

     6. Section 505: Chapter 5 was reformatted in 2003. Existing Section 509 was relocated to Section 505 in the model code. The state amendment to this section is retained.

     7. Section 508.5: An exception was added to allow residential water heater discharge to the drip pan.

     8. Section 509: (See Section 505.) Access and Working Space was retained from the existing code and moved to this location. These provisions were not present in the 2003 version.

     9. Section 603.4.11: This new amendment specifies air gaps or RP backflow device for potable water connections to boilers for consistency with state drinking water regulations.

     10. Section 604.1: Editorial change to coordinate the existing state amendment to include new materials present in 2003 UPC.

     11. Section 608.5: This new amendment allows alternatives for the termination of residential water heater relief valves. See also Section 508.5.

     12. Section 609.10.2: This new amendment allows water hammer arresters to be installed in concealed locations if allowed by the manufacturer's specifications.

     13. Section 1101: This proposal moves the storm draining requirements found in Appendix M back into Chapter 11. These are existing state amendments to the Storm Drainage provisions.

     14. Section Chapter 13: This chapter was reformatted to coordinate with NFPA 99. Since that was the intent of the existing state amendments, many of them were no longer needed. Editorial changes were made to coordinate with language in the 2003 edition.

     15. Section 1313.3: Clarification to direct user to the Department of Health regulations for med gas inlets/outlets.

     16. Section 1331: Editorial change to section title to coordinate with existing language. Section 1331.1.1 also specifies that the vendor cannot perform verification.

     17. Chapter 14: The existing state amendment to Chapter 14 was reformatted to be more user-friendly.

     18. Appendix M: See Chapter 11.

Chapter 51-57 WAC:

     1. Sections 003, 008: These sections maintain existing statewide amendments, correcting section references and dates. Appendix B, Explanatory Notes on Combination Waste and Vent Systems, is proposed for adoption.

     2. Section 20200: A new amendment is proposed Installation Standard 20-200 to add an exception to allow use of products designed to be used without primer.

     No small business economic impact statement has been prepared under chapter 19.85 RCW. This rule will update the adoption of model codes to stay current with national standards for the benefit of industry and Washington state interests. No adverse economic impact on small business was identified.

     RCW 34.05.328 does not apply to this rule adoption. The State Building Code Council is not listed in this section as one of the agencies required to comply with this regulation.

     Hearing Location: Spokane City Council Chambers, West 808 Spokane Falls Boulevard, Spokane, WA, on October 10, 2003, at 10:00 a.m.; and at the Holiday Inn Select/Renton, One Grady Way South, Renton, WA, on October 17, 2003, at 10:00 a.m.

     Assistance for Persons with Disabilities: Contact

Sue Mathers by September 26, 2003, TDD (360) 753-7427 or (360) 725-2967.

     Submit Written Comments to: Stan Price, Chairman, State Building Code Council, P.O. Box 48350, Olympia, WA 98504-8350, fax (360) 586-9383, e-mail sbcc@cted.wa.gov, by October 17, 2003.

     Date of Intended Adoption: November 21, 2003.

August 7, 2003

Tim Nogler

for Stan Price

Council Chair

OTS-6580.2

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-003, filed 12/18/01, effective 7/1/02.]

     Codes referenced which are not adopted through RCW 19.27.031 shall not apply unless specifically adopted by the authority having jurisdiction. When referenced, as appropriate, such references shall mean the International Building Code (as adopted and amended by the state of Washington), the International Fire Code (as adopted and amended by the state of Washington), the International Mechanical Code (as adopted and amended by the state of Washington), the Washington State Energy Code, or other locally adopted code if applicable.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-007, filed 12/18/01, effective 7/1/02.]

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-008, filed 12/18/01, effective 7/1/02.]

101.4.1.4 Conflict Between Codes. Delete paragraph.

102.4 Appeals. All persons shall have the right to appeal a decision of the ((administrative)) authority having jurisdiction. The jurisdiction shall have a board of appeals to hear and rule on Plumbing Code appeals. Members of the board shall be appointed by the jurisdiction. Decisions by the board shall be reported to the jurisdiction and administered by the ((administrative)) authority having jurisdiction.

103.1.3 Certification. State rules and regulations concerning certification shall apply.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0100, filed 12/18/01, effective 7/1/02.]

205.0 Certified Backflow Assembly Tester - A person certified by the Washington state department of health under chapter 246-292 WAC to inspect (for correct installation and approval status) and test (for proper operation) approved backflow assemblies.

((208.0 Flammable Vapor or Fumes is the concentration of flammable constituents in air that exceeds 10 percent of its lower flammability limit (LFL).))

218.0 Plumbing System – Includes all potable water building supply and distribution pipes, all plumbing fixtures and traps, all drainage and vent pipe(s), and all building drains including their respective joints and connection, devices, receptors, and appurtenances within the property lines of the premises and shall include potable water piping, potable water treating or using equipment, medical gas and medical vacuum systems, and water heaters: Provided, That no certification shall be required for the installation of a plumbing system within the property lines and outside a building.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0200, filed 12/18/01, effective 7/1/02.]

((301.1.1 Approvals. Unless otherwise provided for in this code, all materials, fixtures or devices used or entering into the construction of plumbing systems, or parts thereof, shall be submitted to the administrative authority for approval and shall conform to approved nationally recognized standards, and shall be free from defects. All pipe, fittings, traps, fixtures, material and devices used in a plumbing system shall be listed or labeled by a listing agency or shall be approved by the administrative authority.))

301.1.3 Standards. Standards listed or referred to in this chapter ((and Table 14-1)) or other chapters cover materials ((that)) which will conform to the requirements of this code, when used in accordance with the limitations imposed in this or other chapters thereof and their listing. Where a standard covers materials of various grades, weights, quality, or configurations, there may be only a portion of the listed standard which is applicable. Design and materials for special conditions or materials not provided for herein are allowed to be used ((only)) by special permission of the ((administrative)) authority having jurisdiction after the ((administrative)) authority having jurisdiction has been satisfied as to their adequacy in accordance with Section 301.2.

311.4 Except as hereinafter provided in Sections 908.0, 909.0, 910.0, and Appendix L, Section L 6.0, no vent pipe shall be used as a soil or waste pipe, nor shall any soil or waste pipe be used as a vent.

313.6 No water, soil, or waste pipe shall be installed or permitted outside of a building or in an exterior wall unless, where necessary, adequate provision is made to protect such pipe from freezing. All hot and cold water pipes installed outside the conditioned space shall be insulated to a minimum R-3.

313.7 All pipe penetrating floor/ceiling assemblies and fire-resistance rated walls or partitions shall be protected in accordance with the requirements of the building code.

((316.1.6 Solvent Cement Plastic Pipe Joints. Plastic pipe and fittings designed to be joined by solvent cementing shall comply with this code and the manufacturer's installation instructions.

     ABS pipe and fittings shall be cleaned and then joined with listed solvent cement(s).

     CPVC and PVC pipe and fittings shall be cleaned and joined with listed primer(s) and solvent cement(s).))

314.5.1 In Seismic Design Categories C, D, E and F hubless cast iron piping in sizes 5 inches and larger suspended in exposed locations over public or high traffic areas, pipe over 4 feet in length shall be provided with support on both sides of the coupling.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0300, filed 12/18/01, effective 7/1/02.]

402.0 Water-Conserving Fixtures and Fittings.

402.1 The purpose of this section shall be to implement water conservation performance standards in accordance with RCW 19.27.170.

402.2 Application. This section shall apply to all new construction and all remodeling involving replacement of plumbing fixtures and fittings in all residential, hotel, motel, school, industrial, commercial use, or other occupancies determined by the council to use significant quantities of water. Plumbing fixtures, fittings and appurtenances shall conform to the standards specified in this section and shall be provided with an adequate supply of potable water to flush and keep the fixtures in a clean and sanitary condition without danger of backflow or cross-connection.

402.3 Water Efficiency Standards.

402.3.1 Standards for Vitreous China Plumbing Fixtures.

402.3.1.1 The following standards shall be adopted as plumbing materials, performance standards, and labeling standards for water closets and urinals. Water closets and urinals shall meet either the ANSI/ASME standards or the CSA standard.

ANSI/ASME A112.19.2M-1998	Vitreous China Plumbing Fixtures
ANSI/ASME A112.19.6-1995	Hydraulic Requirements for Water Closets and Urinals
CSA B45	CSA Standards on Plumbing Fixtures

402.3.1.2 The maximum water use allowed in gallons per flush (gpf) or liters per flush (lpf) for any of the following water closets shall be the following:

Tank-type toilets	1.6 gpf/6.0 lpf
Flushometer-valve toilets	1.6 gpf/6.0 lpf
Flushometer-tank toilets	1.6 gpf/6.0 lpf
Electromechanical hydraulic toilets	1.6 gpf/6.0 lpf

EXCEPTIONS:	1. Water closets located in day care centers, intended for use by young children may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.
	2. Water closets with bed pan washers may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.
	3. Blow out bowls, as defined in ANSI/ASME A112.19.2M, Section 5.1.2.3 may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.

402.3.1.3 The maximum water use allowed for any urinal shall be 1.0 gallons per flush or 3.78 liters per flush.

402.3.1.4 No urinal or water closet that operates on a continuous flow or continuous flush basis shall be permitted.

402.3.1.5 This section does not apply to fixtures installed before the effective date of this Section, that are removed and relocated to another room or area of the same building after the effective date of this Section.

402.3.2 Standards for Plumbing Fixture Fittings.

402.3.2.1 The following standards are adopted as plumbing material, performance requirements, and labeling standards for plumbing fixture fittings. Faucets, aerators, and shower heads shall meet either the ANSI/ASME standard or the CSA standard.

ANSI/ASME A112.18.1M-1996	Plumbing Fixture Fittings
CSA B125	Plumbing Fittings

402.3.2.2 The maximum water use allowed for any shower head is 2.5 gallons per minute or 9.5 liters per minute.

EXCEPTION:

Emergency use showers shall be exempt from the maximum water usage rates.

402.3.2.3 The maximum water use allowed in gallons per minute (gpm) or liters per minute (lpm) for any of the following faucets and replacement aerators is the following:

Lavatory faucets	2.5 gpm/9.5 lpm
Kitchen faucets	2.5 gpm/9.5 lpm
Replacement aerators	2.5 gpm/9.5 lpm
Public lavatory faucets other than metering	0.5 gpm/1.9 lpm

402.4 Metering Valves. Lavatory faucets located in restrooms intended for use by the general public shall be equipped with a metering valve designed to close by spring or water pressure when left unattended (self-closing).

EXCEPTIONS:	1. Where designed and installed for use by persons with a disability.
	2. Where installed in day care centers, for use primarily by children under 6 years of age.

402.5 Implementation.

402.5.1 The standards for water efficiency and labeling contained within Section 402.3 shall be in effect as of July 1, 1993, as provided in RCW 19.27.170 and amended July 1, 1998.

402.5.2 No individual, public or private corporation, firm, political subdivision, government agency, or other legal entity, may, for purposes of use in the state of Washington, distribute, sell, offer for sale, import, install, or approve for installation any plumbing fixtures or fittings unless the fixtures or fittings meet the standards as provided for in this Section.

Sections 402.6 through 402.9 are not adopted.

412.2 Location of Floor Drains. Floor drains shall be installed in the following areas:

412.2.1 Toilet rooms containing two (2) or more water closets or a combination of one (1) water closet and one (1) urinal, except in a dwelling unit. The floor shall slope toward the floor drains.

412.2.2 Laundry rooms in commercial buildings and common laundry facilities in multifamily dwelling buildings.

413.0 Minimum Number of Required Fixtures. For minimum number of plumbing fixtures required, see Building Code chapter 29 and Table ((29-A)) 2902.1.

Sections 413.1 through 413.7 and Table 4-1 are not adopted.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0400, filed 12/18/01, effective 7/1/02.]

501.0 General. The regulations of this chapter shall govern the construction, location, and installation of fuel burning and other water heaters heating potable water. The minimum capacity for water heaters shall be in accordance with the first hour rating listed in Table 5-1. See the Mechanical Code for combustion air and installation of all vents and their connectors. All design, construction, and workmanship shall be in conformity with accepted engineering practices, manufacturer's installation instructions, and applicable standards and shall be of such character as to secure the results sought to be obtained by this Code. No water heater shall be hereinafter installed which does not comply in all respects with the type and model of each size thereof approved by the ((administrative)) authority having jurisdiction. A list of accepted gas equipment standards is included in Table 14-1.

     Water heaters used for space heating only are prohibited.

TABLE 5-1^1,3

Notes:	1The first hour rating is found on the "Energy Guide" label.
	2Nonstorage and solar water heaters shall be sized to meet the appropriate first hour rating as shown in the table.
	3For replacement water heaters, see Section 101.4.1.1.1.

((502.1)) 502.2 Chimney – Delete definition.

((502.2)) 502.3 Chimney ((Connector)), Factory-Built – Delete definition.

502.4 Chimney, Masonry – Delete definition.

502.5 ((Direct Vent Appliance)) Chimney, Metal – Delete definition.

502.7 ((Unusually Tight Construction)) Direct Vent Appliance – Delete definition.

502.8 ((Vent)) Flue Collar – Delete definition.

502.9 ((Vent Collar)) Gas Vent, Type B – Delete definition

502.10 Gas Vent, Type L – Delete definition.

502.11 Vent – Delete definition.

((502.10)) 502.12 Vent Connector – Delete definition.

((502.11)) 502.13 Venting System – Delete definition.

((502.12 Venting Systems-Types – Delete definition.))

504.1 Inspection of Chimneys or Vents. Delete paragraph.

((505.0 Gas-Fired Water Heater Approval Requirements.

505.1 Gas fired water heaters shall conform to approved recognized applicable standards or to other standards acceptable to the administrative authority. Each such water heater shall bear the label of an approved testing agency, certifying and attesting that such equipment has been tested and inspected and meets the requirements of applicable standards.

505.2 Except when reconditioned by the manufacturer or the manufacturer's approved agent in accordance with its original approval requirements and reinstalled at its original location, each reconditioned water heater shall be tested for safety and conformity to approved standards, and shall bear the label of an approved testing agency certifying and attesting that such equipment has been tested and inspected and meets the requirements of applicable standards. Such label shall also state clearly that the water heater has been reconditioned, and shall give the name and address of the reconditioner. Every person applying for a permit to install a used or reconditioned water heater shall clearly state on the application for permit that such equipment is used or reconditioned.

505.3 Gas storage-type water heaters shall be provided with, in addition to the primary temperature controls, an over-temperature safety protection device constructed, listed, and installed in accordance with nationally recognized applicable standards for such devices and a combination temperature and pressure relief valve.))

505.1 Prohibited Locations. Water heaters which depend on the combustion of fuel for heat shall not be installed in a room used or designed to be used for sleeping purposes, bathroom, clothes closets or in a closet or other confined space opening into a bath or bedroom.

EXCEPTIONS:	1. Direct vent water heaters.
	2. Water heaters installed in a closet that has a weather-stripped solid door with an approved door closing device, and designed exclusively for the water heater and where all air for combustion and ventilation is supplied from the outdoors.
	3. Water heaters of the automatic storage type installed as a replacement in a bathroom, when specifically approved, properly vented and supplied with adequate combustion air.

     Where not prohibited by other regulations, water heaters may be located under a stairway or landing.

506.2 All storage-type water heaters deriving heat from fuels or types of energy other than gas, shall be provided with, in addition to the primary temperature controls, an over-temperature safety protection device constructed, listed, and installed in accordance with nationally recognized applicable standards for such devices and a combination temperature and pressure relief valve.

507.0 Combustion Air. For issues relating to combustion air, see the Mechanical Code.

Sections 507.1 through ((507.5)) 507.10 are not adopted.

((509.0 Prohibited Locations. Water heaters which depend on the combustion of fuel for heat shall not be installed in a room used or designed to be used for sleeping purposes, bathroom, clothes closets or in a closet or other confined space opening into a bath or bedroom.

EXCEPTIONS:	1. Direct vent water heaters.
	2. Water heaters installed in a closet that has a weather-stripped solid door with an approved door closing device, and designed exclusively for the water heater and where all air for combustion and ventilation is supplied from the outdoors.
	3. Water heaters of the automatic storage type installed as a replacement in a bathroom, when specifically approved, properly vented and supplied with adequate combustion air.

Where not prohibited by other regulations, water heaters may be located under a stairway or landing.))

508.5 Relief Valve Discharge. Discharge from a relief valve into a water heater pan shall be prohibited.

EXCEPTION:

One- and two-family dwellings.

Sections 508.6 through 508.9 are not adopted.

508.12 Delete entire section.

508.18 Venting of Flue Gases - Delete entire section.

Sections 508.20 through 508.24.5 are not adopted.

509.0 Access and Working Space.

509.1 Every water heater installation shall be accessible for inspection, repair, or replacement. The appliance space shall be provided with an opening or doorway of sufficient size to remove the water heater. In no case shall such opening or doorway be less than 24 inches in width. Such access shall be continuous and shall be one or any combination of the following means:

     (1) By an opening or door, and passageway not less than 2 feet in width and large enough to permit removal of the water heater, but not less than 30 inches in height. Stairways and ramps leading to or part of such passageways shall comply with the building code.

     (2) Every attic, roof, mezzanine, or platform more than 8 feet above the ground or floor level shall be made accessible by a stairway or ladder permanently fastened to the building. Such a ladder or stairway shall not be more than 18 feet in length between landings and not less than 14 inches in width. Such a ladder shall have rungs spaced not more than 14 inches center to center and not less than 6 inches from the face of the wall. Each stile is to extend 30 inches above the surface to be reached, or as high as possible, if height is limited. Permanent ladders for water heater access need not be provided at parapets or walls less than 30 inches in height.

EXCEPTION:

A portable ladder may be used for access for water heaters in attics on the single story portion of a Group R or U Occupancy.

     (3) By a trap door or opening and passageway not less than 30 inches by 30 inches, but in no case smaller than the water heater. The passageway shall be continuous from the trap door or opening to the water heater. The trap door or opening shall be located not more than 20 feet from the water heater.

     (4) Every passageway to an attic water heater shall have an unobstructed solid continuous flooring not less than 24 inches wide from the trap door or opening to the water heater. If the trap door or opening is more than 8 feet above the floor, a stairway or ladder permanently fastened to the building shall be provided. Such stairway or ladder shall lead directly to the edge of the trap door or opening and shall comply with the provisions of this section.

EXCEPTION:

A portable ladder may be used for access for water heaters in attics on the single-story portion of a Group R or U Occupancy.

     (5) By an unobstructed catwalk not less than 24 inches wide. Access to the catwalk shall be by ladder or stairs complying with the provisions of this section.

509.2 Attic and underfloor water heater locations shall be provided with an electric outlet and lighting fixture at or near the water heater. The lighting fixture shall be controlled by a switch located adjacent to the opening or trap door.

509.3 An unobstructed solidly floored working surface not less than 30 inches in depth and width shall be provided immediately in front of the firebox access opening. A door opening into such space shall not be considered an obstruction.

Sections 509.3.1 through 509.3.4 are not adopted.

Sections 510.1 through 511.2.25 are not adopted.

512.0 ((Venting of Water Heaters.)) Direct Vent Equipment. Delete entire section.

((513.0 Limitations. Delete entire section.

514.0 Vent Connectors. Delete entire section.

515.0 Location and Support of Venting System. Delete entire section.

516.0 Length Pitch and Clearance. Delete entire section.

517.0 Vent Termination. Delete entire section.

518.0 Area of Venting System. Delete entire section.

519.0 Multiple Appliance Venting. Delete entire section.

520.0 Existing Venting System. Delete entire section.

521.0 Draft Hoods. Delete entire section.

522.0 Gas Venting into Existing Masonry Chimneys. Delete entire section.

523.0 Chimney Connectors. Delete entire section.

524.0 Mechanical Draft Systems. Delete entire section.

525.0 Venting Through Ventilating Hoods and Exhaust Systems. Delete entire section.))

Chapter 5, Part II is not adopted.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0500, filed 12/18/01, effective 7/1/02.]

603.0 Cross-Connection Control. Cross-connection control shall be provided in accordance with the provisions of this chapter. Devices or assemblies for protection of the public water system must be models approved by the department of health under WAC 246-290-490. The ((administrative)) authority having jurisdiction shall coordinate with the local water purveyor where applicable in all matters concerning cross-connection control within the property lines of the premises.

     No person shall install any water operated equipment or mechanism, or use any water treating chemical or substance, if it is found that such equipment, mechanism, chemical or substance may cause pollution or contamination of the domestic water supply. Such equipment or mechanism may be permitted only when equipped with an approved backflow prevention device or assembly.

603.3.3 For devices and assemblies other than those regulated by the Washington department of health in conjunction with the local water purveyor for the protection of public water systems, the ((administrative)) authority having jurisdiction shall ensure that the premise owner or responsible person shall have the backflow prevention assembly tested by a Washington state department of health certified backflow assembly tester:

     (1) At the time of installation, repair or relocation; and

     (2) At least on an annual schedule thereafter, unless more frequent testing is required by the ((administrative)) authority having jurisdiction.

603.4.6.1 Potable water supplies to systems having no pumps or connections for pumping equipment, and no chemical injection or provisions for chemical injection, shall be protected from backflow by one of the following devices:

     (1) Atmospheric vacuum breaker.

     (2) Pressure vacuum breaker.

     (3) Reduced pressure backflow preventer.

     (4) A double check valve may be allowed when approved by the water purveyor and the ((administrative)) authority having jurisdiction.

     (5) A spill proof pressure vacuum breaker may be allowed when approved by the water purveyor and the ((administrative)) authority having jurisdiction.

603.4.11 Potable Water Make Up Connections to Steam or Hot Water Boilers shall be protected by an air gap or a reduced pressure principle backflow preventer.

603.4.13 Potable Water Supply to Carbonators shall be protected by a listed reduced pressure principle backflow preventer as approved by the ((administrative)) authority having jurisdiction for the specific use.

603.4.18.1 Except as provided under Sections 603.4.18.2 and 603.4.18.3, potable water supplies to fire protection systems that are normally under pressure, including but not limited to standpipes and automatic sprinkler systems, except in one or two family residential flow-through or combination sprinkler systems piped in materials approved for potable water distribution systems, shall be protected from back-pressure and back-siphonage by one of the following testable devices:

     1. Double check valve assembly.

     2. Double check detector assembly.

     3. Reduced pressure backflow preventer.

     4. Reduced pressure detector assembly.

Potable water supplies to fire protection systems that are not normally under pressure shall be protected from backflow and shall meet the requirements of the appropriate standard(s) referenced in Table 14-1.

604.1 Water distribution pipe, building supply water pipe and fittings shall be of brass, copper, cast iron, CPVC, galvanized malleable iron, galvanized wrought iron, galvanized steel, PEX or other approved materials. Except as provided in Section 604.13, asbestos-cement, ((CPVC,)) PE, PVC, ((or)) PEX-AL-PEX or PE-AL-PE water pipe ((materials)) manufactured to recognized standards may be used for cold water building supply distribution systems outside a building. ((CPVC,)) PEX-AL-PEX water pipe, tubing, and fittings, manufactured to recognized standards may be used for hot and cold water distribution systems within a building. Other products not listed in this section are acceptable for their intended use, provided that such materials or distribution systems are listed and approved in accordance with nationally recognized standards. All materials used in the water supply system, except valves and similar devices shall be of like material, except where otherwise approved by the ((administrative)) authority having jurisdiction.

((604.13)) 604.14 Plastic water service piping may terminate within a building, provided the connection to the potable water distribution system shall be made as near as is practical to the point of entry and shall be accessible. Barbed insert fittings with hose clamps are prohibited as a transition fitting within the building.

608.5 Relief valves located inside a building shall be provided with a drain, not smaller than the relief valve outlet, of galvanized steel, hard drawn copper piping and fittings, CPVC, or listed relief valve drain tube with fittings which will not reduce the internal bore of the pipe or tubing (straight lengths as opposed to coils) and shall extend from the valve to the outside of the building with the end of the pipe not more than two (2) feet (610 mm) nor less than six (6) inches (152 mm) above the ground or the flood level of the area receiving the discharge and pointing downward. Such drains may terminate at other approved locations. No part of such drain pipe shall be trapped or subject to freezing. The terminal end of the drain pipe shall not be threaded.

EXCEPTION:

Replacement water heating equipment shall only be required to provide a drain pointing downward from the relief valve to extend between two feet (610 mm) and six inches (152 mm) from the floor. No additional floor drain need be provided.

     In one- and two-family dwellings, the following locations shall be approved for the termination of a relief valve:

     1. To a water heater drip pan of approved design, provided the pan is drained with pipe and fittings of the same size and material as required for the relief valve drain.

     2. To an approved, properly installed clotheswasher standpipe receptor, laundry tray, floor drain, floor sink, hub drain, area drain or catch basin.

     3. On grade concrete garage floors.

     4. Other locations meeting the requirements of this section or as approved by the authority having jurisdiction.

609.10.2 Mechanical Devices. When listed mechanical devices are used, the manufacturer's specifications as to location and method of installation shall be followed.

610.4 Systems within the range of Table 6-5 may be sized from that table or by the method set forth in Section 610.5.

     Listed parallel water distribution systems shall be installed in accordance with their listing.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-0600, filed 12/18/01, effective 7/1/02.]

1101.3 Material Uses. Rainwater piping placed within the interior of a building or run within a vent or shaft shall be of cast iron, galvanized steel, wrought iron, brass, copper, lead, Schedule 40 ABS DWV, Schedule 40 PVC DWV, or other approved materials, and changes in direction shall conform to the requirements of Section 706.0.

1101.12.0 Cleanouts.

1101.12.1 Cleanouts for building storm drains shall comply with the requirements of this section. Rain leaders and conductors connected to a building storm sewer shall have a cleanout installed at the base of the outside leader or outside conductor before it connects to the horizontal drain. Cleanouts shall be placed inside the building near the connection between the building drain and the building sewer or installed outside the building at the lower end of the building drain and extended to grade.

1101.12.2 Each cleanout shall be installed so that it opens to allow cleaning in the direction of flow of the soil or waste or at right angles thereto, and except in the case of wye branch and end-of-line cleanouts, shall be installed vertically above the flow line of the pipe.

1101.12.3 Cleanouts installed under concrete or asphalt paving shall be made accessible by yard boxes, or extending flush with paving with approved materials and be adequately protected.

1101.12.4 Approved manholes may be installed in lieu of cleanouts when first approved by the authority having jurisdiction. The maximum distance between manholes shall not exceed three hundred (300) feet (91.4 m).

     The inlet and outlet connections shall be made by the use of a flexible compression joint no closer than twelve (12) inches (305 mm) to, and not farther than three (3) feet (914 mm) from the manhole. No flexible compression joints shall be embedded in the manhole base.

1108.0 Controlled-Flow Roof Drainage. This section is not adopted.

[]

((1302 Medical Gas and Vacuum Piping Systems.

The installation of medical gas and vacuum piping systems shall be in accordance with the requirements of this chapter and/or the appropriate standards adopted by the administrative authority, for additional standards see Table 14-1. The administrative authority shall require evidence of the competency of the installers.))

Part II Medical Gas and Vacuum Systems

1309.0 Scope.

1309.1 The provisions herein shall apply to the design, installation, testing, and verification of medical gas, medical vacuum systems, and related permanent equipment ((for safe use)) in ((patient care)) hospitals, clinics, and other heath care facilities.

1309.2 The purpose of this chapter is to provide minimum requirements for the design, installation, testing and verification of medical gas, medical vacuum systems, and related permanent equipment, from the central supply system to the station outlets or inlets.

((1310.0 Definitions.

1310.1 Building Supply – The pipe from the source of supply to a building or structure.

1310.2 Critical Care Area – An area in a medical facility where special care is provided, including intensive care units, coronary care units, recovery rooms, and respiratory care units.

1310.3 Installer Performance Testing – Testing conducted by the installer or representative prior to system verification using oil-free, dry nitrogen as stated in Chapter 14.

1310.4 Manifold – A device for connecting outlets of one or more gas cylinders to the central piping system for that specific gas.

1310.5 Medical Air – Compressed air used in a medical facility.

1310.6 Medical Gas – Gases used in a medical facility, including oxygen, nitrous oxide, nitrogen, carbon dioxide, helium, medical air, and mixtures of these gases. Standards of purity apply.

1310.7 Medical Gas System – A system consisting of a central supply system (manifold, bulk, or compressors), including control equipment and piping extending to station outlets in the facility where medical gases may be required.

1310.8 Medical Vacuum System – A system consisting of central vacuum-producing equipment with vacuum switches and operating controls, shutoff valves, alarm warning systems, gauges, and a network of piping extending to and terminating with station inlets at locations where patient suction may be required. Includes surgical vacuum systems, waste anesthesia gas disposal (as scavenging systems), and bedside suction systems.

1310.9 Purge, Flow – The removal of oxygen from a system by oil-free dry nitrogen during brazing.

1310.10 Purge, System – The removal of nitrogen from a system with the medical gas required for that system.

1310.11 SCFM – Standard cubic feet per minute, the unit measure for a volume of gas at standard conditions (68 degrees F (20 degrees C) and 1 atmosphere of pressure).

1310.12 Special Hazard Area – An area, such as a kitchen or electrical switch gear room.

1310.13 Station Inlet – An inlet in a vacuum piping system at which the user makes connections and disconnections.

1310.14 Station Outlet – An outlet point in a medical gas piping system at which the user makes connections and disconnections.

1310.15 System Verification – Testing conducted by a qualified party other than the installer or material vendor after the installer performance testing and prior to the medical gas system being put into service.

1310.16 Use Point – A room or area within a room, where medical gases are dispensed to a patient for medical purposes.

1310.17 User Outlet – See station outlet.

1310.18 Valve, Isolation – A valve which isolates one piece of equipment from another.

1310.19 Valve, Riser – A valve at the base of a vertical riser, which isolates that riser.

1310.20 Valve, Service – A valve serving horizontal piping extending from a riser to a station outlet or inlet.

1310.21 Valve, Source – A single valve at the source which controls a number of units that make up the total source.

1310.22 Valve, Zone – A valve which controls the gas or vacuum to a particular area.

1311.3 The administrative authority shall require evidence of the competency of the installers.

1311.4 Delete paragraph.

1313.0 System Installation and Installer Performance Testing.

1313.1 Medical gas and medical vacuum systems shall be designed and installed in accordance with the requirements of this chapter and the installation requirements of this code, specifically Chapter 14 of this code.

1313.2 A report of completion of the installer performance testing which includes the specific items in Chapter 14 shall be furnished to the administrative authority prior to system verification.

1314.0 System Verification.

1314.1 Prior to any medical gas system being placed in service, each and every system shall be verified as described in Chapter 14. This verification shall be accomplished by an independent third party verification agency which is approved by the administrative authority.

1314.2 A report which includes at least the specific items in Chapter 14 shall be furnished to the administrative authority prior to final acceptance of the system.

Sections 1315 through 1331 are not adopted.)) 1313.3 Minimum Station Outlets/Inlets. Station outlets and inlets for medical gas and medical vacuum systems shall be provided as listed in WAC 246-320-525.

1331.0 System Verification.

1331.1 Prior to any medical gas system being placed in service, each and every system shall be verified as described in section 1331.2.

1331.1.1 Verification tests shall be performed only after all tests required in section 1329.0, Installer Performed Tests, have been completed.

     Testing shall be conducted by a party technically competent and experienced in the field of medical gas and vacuum pipeline testing and meeting the requirements of ANSI/ASSE Standard 6030, Medical Gas Verifiers Professional Qualifications Standard.

     Testing shall be performed by a party other than the installing contractor or material vendor.

     When systems have been installed by in-house personnel, testing shall be permitted by personnel of that organization who meet the requirements of this section.

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-1300, filed 12/18/01, effective 7/1/02.]

TABLE 14-1

Standards for Materials, Equipment, Joints and Connections

Where more than one standard has been listed for the same material or method, the relevant portions of all such standards shall apply.

Footnotes:	1. Although this standard is referenced in Table 14-1, some of the pipe, tubing, fittings, valves, or fixtures included in the standard are not acceptable for use under the provisions of the Uniform Plumbing Code.
	2. PDI Standard G101 by reference.
	3. Additional Requirements for Inner and Outer Layers.
	4. See Section 316.1.3 for restriction.
	5. Alloy C85200 for cleanout plugs.
	6. Limited to domestic sewage.
	7. Type II only.
	8. Fixture fittings with hose connected singular moveable outlets shall have two check valves and an atmospheric vacuum breaker.
	9. ASSE 1066 is not intended to limit the maximum outlet temperature at point of use.
	10. See section 315.0 for Trenching, Excavation, and Backfilling requirements when installing building drains and sewers. Engineers may wish to consult ASTM D2321 when preparing plans and specifications for sewer mains or specific projects.))

Add the following standard to those listed in Table 14-1:

Standard Number	Standard Title	Application	Indicate if Not Approved in the UPC
WAC 246-290-490	Washington State Department of Health Cross-connection Control Requirements	Backflow Protection

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-56-1400, filed 12/18/01, effective 7/1/02.]

     The following section of the Washington Administrative Code is repealed:

WAC 51-56-201300

Appendix M -- Storm drainage.

OTS-6591.2

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-57-003, filed 12/18/01, effective 7/1/02.]

[Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, § 51-57-008, filed 12/18/01, effective 7/1/02.]

301.1.1 Materials. Materials shall comply with the following:

Materials		ASTM Std
Raw Material - CPVC 23447-B		D1784-95
IPS pipe
	Sch 40 (1/2 in., 3/4 in., and 1 in.)	F 441-89e1
	Sch 80 (1/2 in. - 2 in.)	F 441-94
Tubing
	SDR 11 (1/2 in. - 2 in.)	D2846-93
Fittings
	Sch 40 (1/2 in., 3/4 in., and 1 in.)	F 438-93
	Sch 80 (1/2 in. - 2 in.)	F 439-93a
	Tube Fittings (1/2 in. - 2 in.)	D2846-93

     Primer. Listed primers shall be used that are compatible with the type of listed CPVC cement and pipe used. The primer shall be a true solvent for CPVC, containing no slow-drying ingredient. Cleaners shall not be allowed to be used as a substitute or equivalent for a listed primer.

EXCEPTION:

Listed solvent cements that do not require the use of primer shall be permitted for use with CPVC pipe and fittings, manufactured in accordance with ASTM D2845 (1/2 in. - 2 in.).

[]

© Washington State Code Reviser's Office