Answers and Analysis
This knowledge base, updated to include the analyses from the 2003 through the most recent editions of the Uniform Plumbing and Mechanical Codes, continues to be a premier source for engineers, inspectors, students, contractors and tradesmen. Questions come from a broad base of users, and answers are informal interpretations of the Codes provided by a committee of code officials and special experts - they are clearly stated and to the point. This updated site combines the most pertinent analyses from the previous manual and presents them together with those based on the most recent publications of the Uniform Codes. This makes the Answers and Analysis database one of the most valuable tools you as a member can access wherever you have an internet connection.
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Questions matching UPC Chapter 12
36 results
UPC 2003 1204.4
UPC 2006 1204.4
UPC 2009 1204.4
UPC 2012 1203.4
Topic: Retesting Existing Gas Piping
My city has a number of buildings which are being converted from LPG to natural gas for use as fuel for water heaters, furnaces, and ranges. Some of these conversions consist of only new gas piping that is
being installed outside the structure from the meter location to the supplier’s gas main.
Is it the intention of the UPC to require a pressure test on the entire system when no modification to the
existing building piping has occurred? All new gas piping that is installed outside of the building will be
tested.
being installed outside the structure from the meter location to the supplier’s gas main.
Is it the intention of the UPC to require a pressure test on the entire system when no modification to the
existing building piping has occurred? All new gas piping that is installed outside of the building will be
tested.
The local jurisdiction may use discretionary authority to waive the test on the existing portion of a gas piping system, provided that it has been determined that the existing work has not suffered structural damage,
complies with the sizing and material requirements of the code, and was previously properly tested.
complies with the sizing and material requirements of the code, and was previously properly tested.
UPC 2003 1207.3
UPC 2006 1207.3
UPC 2009 1207.3
UPC 2012 1206.3
Topic: Capping Future Gas Connections
1. Is a future gas “stub-out” required to be provided with a shutoff valve and cap? 2. Is a capped outlet without a shutoff valve considered a completed gas system?
1. No. This is provided where it is not connected to the system. 2. Yes.
UPC 2003 1209.5.2.3
UPC 2006 1209.5.2.3
UPC 2009 1209.5.2.3
UPC 2012 1208.5.2.3
Topic: Pipes and Connections
1. Is copper pipe or tubing approved for gas systems? 2. Do you need a dielectric union between the brass gas valve and the steel gas pipe connected to a
water heater?
3. Can a union be installed prior to or upstream of a gas shut off valve?
water heater?
3. Can a union be installed prior to or upstream of a gas shut off valve?
1. Yes, the Uniform Plumbing Code permits the use of copper or brass pipe for gas unless the “gas contains more than an average of 0.3 grains of
hydrogen sulfide per 100 scf of gas”. Consult the local gas supplier for information on the amount of
hydrogen sulfide in the gas they deliver.
2. No, insulating couplings or fittings for joining dissimilar metals are only required when the gas pipe
comes in contact with the earth or other corrosive materials, per Section 1211.1.3 (2003/2006/2009)
1210.1.3 (2012).
3. Yes, unions may be installed wherever necessary in a gas distribution system. There are restrictions
for unions installed in a concealed location. [see Section 1211.3.2 (4) (2003/2006/2009) 1210.3.1 (2012)]
Unions used at appliances shall be installed after the shutoff valve to allow for removal of the appliance
if needed. See section 1212.4 (2003/2006/2009) 1211.5 (2012)
hydrogen sulfide per 100 scf of gas”. Consult the local gas supplier for information on the amount of
hydrogen sulfide in the gas they deliver.
2. No, insulating couplings or fittings for joining dissimilar metals are only required when the gas pipe
comes in contact with the earth or other corrosive materials, per Section 1211.1.3 (2003/2006/2009)
1210.1.3 (2012).
3. Yes, unions may be installed wherever necessary in a gas distribution system. There are restrictions
for unions installed in a concealed location. [see Section 1211.3.2 (4) (2003/2006/2009) 1210.3.1 (2012)]
Unions used at appliances shall be installed after the shutoff valve to allow for removal of the appliance
if needed. See section 1212.4 (2003/2006/2009) 1211.5 (2012)
UPC 2003 1211.1.7c.
UPC 2006 1211.1.7c.
UPC 2009 1211.1.7c.
UPC 2012 1210.1.7.2
Topic: Gas Piping
Underground plastic gas piping has to be a minimum of 18” in the ground. Doesn’t it also have to have a tracer wire with it?
Yes, Section 1211.1.7 (C) 1210.1.7.2 (2012)of the 2009 UPC states “an electrically continuous corrosion- resistant tracer wire (minimum AWG 14) or tape shall be shall be buried with the plastic pipe to facilitate locating. One (1) end shall be brought above ground at a building wall or riser.”
UPC 2003 1211.2.4.1
UPC 2006 1211.2.4.1
UPC 2009 1211.2.4.1
UPC 2012 1210.2.2.1
Topic: Ceiling Locations
Section 1211.2.4.1 states that gas valves shall not be located in spaces between a fixed ceiling and a dropped ceiling. This section of the code was added in 2003. It has been an industry practice to place valves in these now prohibited locations. Can you provide the reasoning behind this change? We would like the interpretation of the following:
1. Can a gas shut off valve be located between a poured concrete deck and a t-bar ceiling?
2. Can a gas shut off valve be located between a framed ceiling and a t-bar ceiling?
3. Can a gas shut off valve be located between a framed ceiling and a framed drop ceiling?
4. Can a gas shut off valve be located in an interstitial space between a structural concrete/steel deck and a t-bar or hard lid ceiling?
1. Can a gas shut off valve be located between a poured concrete deck and a t-bar ceiling?
2. Can a gas shut off valve be located between a framed ceiling and a t-bar ceiling?
3. Can a gas shut off valve be located between a framed ceiling and a framed drop ceiling?
4. Can a gas shut off valve be located in an interstitial space between a structural concrete/steel deck and a t-bar or hard lid ceiling?
The 2003 was the first edition of the Uniform Plumbing Code that was designated by ANSI (American National Standards Institute) as a national standard (IAPMO/ANSI UPC 1-2003). At that time, all UPC code sections that were in conflict with NFPA 54 (National Fuel Gas Code) and NFPA 58 (Liquefied Petroleum Gas Code) were eliminated and sections of NFPA 54 & 58 were amalgamated into the UPC. Section 1211.2.4.1 of the 2003 UPC, and subsequent editions of the Uniform Plumbing Code, was part of that merger.
1. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)
2. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)3. No, gas valves are required to accessible or readily accessible per the requirements found in Section 1211.11.
4. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)
1. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)
2. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)3. No, gas valves are required to accessible or readily accessible per the requirements found in Section 1211.11.
4. No, unless serving an appliance within the space (see 1211.2.4.1 Exception)
UPC 2003 1211.3.2
UPC 2006 1211.3.2
UPC 2009 1211.3.2
UPC 2012 1210.3.1
Topic: Concealed Connections
Is a right/left nipple/coupling allowed to be concealed?
No, Section 1211.3.2 of the 2009 UPC specifically prohibits the use of right and left couplings in concealed locations. When NFPA 54 was inserted into the code in 2003, it changed a number of things we had always done under the UPC, the use of right and left hand couplings being one of them. The 2012 UPC Section 1210.3.1 has been revised to now include the use of right/left nipple/couplings and to no longer permit the use of ground joint unions in concealed spaces.
UPC 2003 1212.7
UPC 2006 1212.7
UPC 2009 1212.7
UPC 2012 1211.8
Topic: Sediment Trap
Is a sediment trap required for residential gas water heaters (40 gal. to 80 gal.)?
Yes, a sediment trap is required on all gas appliances, including water heaters, where one is “not incorporated as part of the gas utilization equipment.” Sediment traps are not required on appliances such as “illuminating appliances, ranges, clothes dryers, decorative vented appliances for installation in vented fireplaces, gas fireplaces, and outdoor grills.”
For some reason Code language is sometimes written in the negative declaration. Section 1212.7 (2003/2006/2209) 1211.8 (2012) states which appliances do not require sediment traps at installation. Water heaters and furnaces are not included in that list; consequently, a sediment trap is required for residential water heaters.
For some reason Code language is sometimes written in the negative declaration. Section 1212.7 (2003/2006/2209) 1211.8 (2012) states which appliances do not require sediment traps at installation. Water heaters and furnaces are not included in that list; consequently, a sediment trap is required for residential water heaters.
UPC 2006 1214.4 /1214.3
UPC 2009 1214.4 /1214.3
UPC 2012 1213.3/1213.4
Topic: Test Pressures
Should Section 1214.4 be used when testing natural gas piping systems? If so, would you provide an explanation for the reduction in test pressures and time duration for natural gas testing?
Yes. Section 1214.3 (2006/2009) 1213.3 (2012) gives the requirements for the pressures used when testing all gas piping systems.
The change in testing pressures and procedures for testing gas piping is a culmination of the amalgamation
of the National Fuel Gas Code and the Uniform Plumbing Code paving the way for the designation of
the Uniform Plumbing Code as an ANSI Standard.
Gas system test pressures and the duration of the test must comply with section 1214.3 (2006/2009)
1213.3 (2012). The time duration of a test is based on volume of the system. Leaks on smaller systems, such as a residence, would show a drop in pressure much quicker on a gauge than the same leak on a large volume system, thus the difference in time duration required. Section 1214.4 (2006/2009) 1213.4 (2012) states that a drop in test pressure would indicate the presence of a leak unless such reduction can be attributed to some other cause, such as a big change in ambient temperature.
The change in testing pressures and procedures for testing gas piping is a culmination of the amalgamation
of the National Fuel Gas Code and the Uniform Plumbing Code paving the way for the designation of
the Uniform Plumbing Code as an ANSI Standard.
Gas system test pressures and the duration of the test must comply with section 1214.3 (2006/2009)
1213.3 (2012). The time duration of a test is based on volume of the system. Leaks on smaller systems, such as a residence, would show a drop in pressure much quicker on a gauge than the same leak on a large volume system, thus the difference in time duration required. Section 1214.4 (2006/2009) 1213.4 (2012) states that a drop in test pressure would indicate the presence of a leak unless such reduction can be attributed to some other cause, such as a big change in ambient temperature.
UPC 2003 1211.1.7 Section (A)
UPC 2006 1211.1.7 Section (A)
UPC 2009 1211.1.7 Section (A)
UPC 2012 1210.1.7 Section (A)
Topic: Connection of Plastic Piping
Is an anodeless type gas transition riser the only type that can be used for installation of plastic gas piping?
Comment
Transition gas riser companies make a compression type gas riser that is used for connecting plastic underground and then terminating to the surface. Are these acceptable to code?
Comment
Transition gas riser companies make a compression type gas riser that is used for connecting plastic underground and then terminating to the surface. Are these acceptable to code?
Anodeless risers shall be permitted in accordance with section 1211.1.7(2003/2006/2009) 1210.1.7(2012) provided they meet all applicable listing and product approval criteria. Specifically, connections that transition between metallic & plastic piping shall conform to ASTM D2513, ASTM F1973 or ASTM 2509. If the riser is appropriately listed with compliant connections it may be approved.
UPC 2003 1211.1.6
UPC 2006 1211.1.6
UPC 2009 1211.1.6
UPC 2012 1210.1.6
Topic: Piping Underground Beneath Buildings
Is an underground gas line required to be installed in a conduit where a alumawood or lattice patio cover is installed over it? If yes, does the conduit need to be vented above grade to the outside?
A building by definition (UPC, Section 204.0)is “a structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, or support of persons, animals, or property of any kind”. A covered patio falls within the perimeters of a “building” as described in the definition and would therefore be required to meet the installation specifications found in Section 1211.1.6 of the UPC.
UPC 2003 1209.7.2
UPC 2006 1209.7.2
UPC 2009 1209.7.2
UPC 2012 1208.7.2
Topic: Pressure Regulator Listing
UPC Section 1209.7.2 (2003/2006/2009) 1208.7.2 (2012) states that line pressure regulators shall be listed in accordance with CSA Z21.80.
1. Will this code section applied for multifamily apartment building where multiple gas regulators are provided with less than 1,000 CFH for each gas regulator?
2. Is size of the regulator (for example: 1/2", 3/4", 1", 1 1/2", 2", 3") affected by this code section?
1. Will this code section applied for multifamily apartment building where multiple gas regulators are provided with less than 1,000 CFH for each gas regulator?
2. Is size of the regulator (for example: 1/2", 3/4", 1", 1 1/2", 2", 3") affected by this code section?
1. Section 1209.7.2(2003/2006/2009)1208.7.2(2012) addresses the standard to which all gas pressure regulators shall be listed. Gas pressure regulators can be used in the proposed application, provided they meet the required standard; CSA Z21.80. The standard will be printed on the manufacturers label.
2. The size of a regulator is based on the required pressure and volume of the gas system and the regulator shall be able to provide the maximum volume of the gas system. The pressure and volume rating shall be on the label of the regulator.
2. The size of a regulator is based on the required pressure and volume of the gas system and the regulator shall be able to provide the maximum volume of the gas system. The pressure and volume rating shall be on the label of the regulator.
UPC 2009 1211.1.6
UPC 2012 1210.1.6
UPC 2015 1210.1.6
Topic: Piping Underground Beneath Buildings
Does the UPC allow a gas line to pass completely under a building from one side to the other if it is sleeved and vented per 1211.1.6 (2009); 1210.1.6 (2012/ 2015)?
Section 1211.1.6 (2009); 1210.1.6 (2012/ 2015) states, “Where the installation of gas piping underground beneath buildings is unavoidable the piping shall be encased in an approved conduit…” The local AHJ shall determine if an alternate route for the gas line exists.
UPC 2009 1211.2.4.1
UPC 2012 1210.2.2.1
UPC 2015 1210.2.2.1
Topic: Installation of Piping, Ceiling Locations
Is the intent of Section 1211.2.4.1 (2009), 1210.2.2.1 (2012/ 2015), to preclude valves from being installed above a ceiling in general, or only in the very specific case where a fixed ceiling has been installed below the building structure and then a dropped ceiling below that?
The specific description of a fixed ceiling with a dropped ceiling below that seems like atypical construction. A more standard construction would be the roof or building structure with a drop ceiling below that.
The specific description of a fixed ceiling with a dropped ceiling below that seems like atypical construction. A more standard construction would be the roof or building structure with a drop ceiling below that.
Yes. Valves are not allowed above a ceiling, except when an appliance is located within this space then a gas valve is allowed per the exception for that appliance.
UPC 2009 1212.5
UPC 2012 1211.5
UPC 2015 1212.5
Topic: Appliance Shutoff Valves and Connections
Can a gas shut-off valve be located behind a range or stove, or must it be located in an adjacent cabinet in order for it to be "accessible"?
Yes. The shut-off valve may be located in, under, or behind the appliance, as long as the appliance can be removed without removing the shut-off valve. Appliance flexible connectors are manufactured to provide for the removal of an appliance (range, dryer, etc.) for access to the shut-off valve.
UPC 2009 1212.4 (D)
UPC 2012 1211.4.4
UPC 2015 1212.4.3
Topic: Flexible Gas Connectors
1. Are the left and right cabinet sides considered partitions in a kitchen with a built-in oven under a drop-in range top?
2. Can a flexible fuel gas connector run through the cabinet sides to supply the sealed range top?
The area is not accessible unless the built-in oven or sealed range top is removed.
2. Can a flexible fuel gas connector run through the cabinet sides to supply the sealed range top?
The area is not accessible unless the built-in oven or sealed range top is removed.
1. Yes. A partition as defined in the Merriam-Webster dictionary is “a wall or screen that separates one area from another”. The side of a cabinet falls within the definition of a partition.
2. No. In Section 1212.4 (D) (2009), 1211.4.4 (2012), 1212.4.3 (2015), flexible fuel gas connectors “shall be of the minimum practical length and shall not extend from one room to another or pass through walls, partitions, ceilings, or floors”. Gas connectors are typically constructed of very thin material which could be damaged by wear against the partition walls.
2. No. In Section 1212.4 (D) (2009), 1211.4.4 (2012), 1212.4.3 (2015), flexible fuel gas connectors “shall be of the minimum practical length and shall not extend from one room to another or pass through walls, partitions, ceilings, or floors”. Gas connectors are typically constructed of very thin material which could be damaged by wear against the partition walls.
UPC 2009 1211.1.7
UPC 2012 1208.5.4.2
UPC 2015 1210.1.7
Topic: Anodeless Risers
Is it acceptable at any time to direct bury an "anode" style natural gas riser without an anode attached for cathodic protection?
No. IAPMO lists “anode” type risers that meet DOT 192.281, 192.283, 192.375 and ASTM-D2513 CAT-1 specifications. Anode type risers not meeting those standards would need additional cathodic protection.
UPC 2009 1211.15.2
UPC 2012 1210.15.2
UPC 2015 1211.2
Topic: Bonding of CSST Gas Piping
Regarding Section 1211.15.2 (2009), 1210.15.2 (2012), 1211.2 (2015), could you please clarify how the bonding is to be made? Is it a small bonding wire with clamp on both sides of the joint, or one continuous wire the length of the CSST?
Section 1211.15.2 (2009), 1210.15.2 (2012), 1211.2 (2015) specifically states that “CSST gas piping systems shall be bonded to the electrical service grounding electrode system with a wire not smaller than 6 AWG copper. The bonding jumper shall connect to a metallic pipe or fitting between the point of delivery and first downstream CSST fitting.”
UPC 2009 1211.9
UPC 2012 1210.9
UPC 2015 1210.9
Topic: Gas Pipe Outlets
Is it permitted to stub out a gas line for a BBQ to be located under a covered (but not enclosed) patio?
Yes, as long as the gas pipe is above ground. Section 1211.9 (2009), 1210.9(2012/ 2015) lists several requirements for gas outlets.
A covered patio fits within the description of a building. Section 204.0 defines a building as “a structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, or support of persons, animals, or property of any kind”.
Gas piping installed underground beneath buildings, per Section 1210.1.6, shall be encased in an approved conduit and installed in accordance with 1210.1.6.1 or Section 1210.1.6.2. or installed in an encasement system listed for installation beneath buildings.
Also consult the building code for combustible construction requirements for gas grills under a covered patio.
A covered patio fits within the description of a building. Section 204.0 defines a building as “a structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, or support of persons, animals, or property of any kind”.
Gas piping installed underground beneath buildings, per Section 1210.1.6, shall be encased in an approved conduit and installed in accordance with 1210.1.6.1 or Section 1210.1.6.2. or installed in an encasement system listed for installation beneath buildings.
Also consult the building code for combustible construction requirements for gas grills under a covered patio.
UPC 2006 1211.10.1, 1211.10.2(B)
UPC 2012 1210.11.1.1
UPC 2015 1210.11.1.1
Topic: Gas Shut off Valve
A multi-unit apartment complex is supplied with medium pressure gas at a master meter. The gas from the meter is piped thru the building to a closet with multiple regulators and reduced to low pressure. Each regulator is equipped with a shut off valve and tagged with the multiple units it supplies.
1. Does this code section require that each tenant branch line be provided with an additional shut off upstream of the equipment shutoff at the appliance?
2. Do the shut offs at the regulators serving the branch lines for multiple units meet this code requirement?
1. Does this code section require that each tenant branch line be provided with an additional shut off upstream of the equipment shutoff at the appliance?
2. Do the shut offs at the regulators serving the branch lines for multiple units meet this code requirement?
1. Yes. Section 1210.11 requires a shutoff valve before each regulator, and Section 1210.11.1 requires a shutoff valve for each apartment in addition to the equipment shutoff valves. 2. No.
UPC 2015 1212.8
Topic: Sediment Trap
According to this section the sediment trap now has to be before the gas flex connector.
However, if hard piped, with the sediment trap at the control, as shown in the WH installation manual it is ok.
What difference does it make?
And am I reading the new code change wrong? See attachments
1. Code section
2. Water heater instructions
3. Photo of actual install. Is this in violation of 1212.8?
However, if hard piped, with the sediment trap at the control, as shown in the WH installation manual it is ok.
What difference does it make?
And am I reading the new code change wrong? See attachments
1. Code section
2. Water heater instructions
3. Photo of actual install. Is this in violation of 1212.8?
The sediment trap before the flex connector allows for sediment to be trapped in the sediment trap and not the flex. If the sediment trap was placed after the flex the sediment would be trapped by the flex connector and the connector would have to be replaced. The install design specifically addresses a flex connector and does not address hard pipe. The install design also facilitates the removal of the trap for maintenance purposes without disturbing gas service to other appliances.
The water heater instructional diagram provided would meet code because it reflects a hard pipe connection and meets the intent of the code.
The water heater instructional diagram provided would meet code because it reflects a hard pipe connection and meets the intent of the code.
UPC 2012 1213.3
UPC 2015 1213.3
UPC 2018 1213.3
Topic: Test Pressure
1. Does the test pressures specified in section 1213.3 apply to PE pipe when installing underground?
2. Is the butt-fusion process used when joining PE pipe considered welding?
Comment:
Air pressure testing is inherently dangerous. It seems prudent to use the lowest pressure that confirms a leak free piping system, while ensuring a safe testing procedure for both inspector and
contractor.
2. Is the butt-fusion process used when joining PE pipe considered welding?
Comment:
Air pressure testing is inherently dangerous. It seems prudent to use the lowest pressure that confirms a leak free piping system, while ensuring a safe testing procedure for both inspector and
contractor.
1. Yes. The test pressures found in Section 1213.3 of the 2015 Uniform Plumbing Code (UPC) applies to all materials used to convey fuel gas.
2. Yes. Though the UPC does not define welding, Webster’s Dictionary describes welding as, a) to unite (metallic parts) by heating and allowing the metals to flow together or by hammering or compressing with or without previous heatings; b) to unite (plastics) in a similar manner by heating; c)to repair (something) by this method. Butt fusion, which is sometimes called heat fusion, welding or simply fusion, is a welding process used to join two different pieces of thermoplastic. This process involves heating both pieces simultaneously and pressing them together.
2. Yes. Though the UPC does not define welding, Webster’s Dictionary describes welding as, a) to unite (metallic parts) by heating and allowing the metals to flow together or by hammering or compressing with or without previous heatings; b) to unite (plastics) in a similar manner by heating; c)to repair (something) by this method. Butt fusion, which is sometimes called heat fusion, welding or simply fusion, is a welding process used to join two different pieces of thermoplastic. This process involves heating both pieces simultaneously and pressing them together.
UPC 2009 1209.5.8
UPC 2012 1208.5.8
UPC 2015 1210.0
UPC 2018 1208.6.11
Topic: Unions, limitations, Left/right nipples and couplings
1. Are unions allowed on gas piping in accessible locations?
2. Are there any limitations for the use of unions in gas piping systems?
3. Where are left/right nipples and coupling allowed in gas piping installations
2. Are there any limitations for the use of unions in gas piping systems?
3. Where are left/right nipples and coupling allowed in gas piping installations
1. Yes. Section 1208.5.8 of the 2015 Uniform Plumbing Code specifies what type of metallic pipe joint and fittings that would be allowed in a gas distribution system. A ground-joint union meets the requirements found in this section and may be installed in accessible locations.
2. Yes. Per Section 1210.3.1, ground-joint unions are not included in the list of acceptable fittings for installation in concealed locations.
3. Left/right nipples and couplings, installed as part of a gas distribution system, may be used in any location, including concealed locations.
2. Yes. Per Section 1210.3.1, ground-joint unions are not included in the list of acceptable fittings for installation in concealed locations.
3. Left/right nipples and couplings, installed as part of a gas distribution system, may be used in any location, including concealed locations.
UPC 2006 1209.5.2.2
UPC 2009 1209.5.2.2
UPC 2012 1208.5.2.2
UPC 2015 1208.0
UPC 2018 1208.6.3.1
Topic: Gas Piping System Design, Materials and Components
1. Is galvanized steel gas piping allowed for a gas piping system?
2. If allowed, is it only allowed for above grade gas piping installation?
2. If allowed, is it only allowed for above grade gas piping installation?
1. Yes. ASTM A53, (Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and Seamless) is one of the standards found in Section 1208.5.2.1 of the 2015 Uniform Plumbing Code for the manufacture of approved steel and wrought iron gas piping material.
2. The 2015 Uniform Plumbing Code does not prohibit the use of galvanized pipe in an underground installation. Section 1210.1.3 does state that “piping shall be protected against corrosion in an approved manner.”
Note: The Uniform Plumbing Code and NFPA 54 are both ANSI Documents and as such may not be in direct conflict concerning installation requirements. Section 7.1.3.1 of the NFPA 54-2018 states that “Zinc coating (galvanizing) shall not be deemed adequate protection for underground gas piping.”
2. The 2015 Uniform Plumbing Code does not prohibit the use of galvanized pipe in an underground installation. Section 1210.1.3 does state that “piping shall be protected against corrosion in an approved manner.”
Note: The Uniform Plumbing Code and NFPA 54 are both ANSI Documents and as such may not be in direct conflict concerning installation requirements. Section 7.1.3.1 of the NFPA 54-2018 states that “Zinc coating (galvanizing) shall not be deemed adequate protection for underground gas piping.”
UPC 2015 1213.3, 1208.5.4.2.3
Topic: Test Pressure
1. When pressure testing propane gas piping systems, would the appropriate testing pressure be based on UPC section 1213.3 or the provisions of NFPA 58 (1208.5.4.2.3)?
2. If UPC 1213.3 is the appropriate section for testing a 10 psi system, would the test pressure be 60 psi?
3. Would the test pressure be any different if the piping material is PE pipe?
4. If NFPA 58 is the appropriate standard for testing, would the test pressure be 10 psi on the 10 psi working pressure system, as allowed by NFPA 58?
2. If UPC 1213.3 is the appropriate section for testing a 10 psi system, would the test pressure be 60 psi?
3. Would the test pressure be any different if the piping material is PE pipe?
4. If NFPA 58 is the appropriate standard for testing, would the test pressure be 10 psi on the 10 psi working pressure system, as allowed by NFPA 58?
1. Fuel gas, as defined in Section 208.0 of the 2015 Uniform Plumbing Code, includes, “natural, manufactured, liquefied petroleum, or a mixture of these”. LPG gas systems, other than those described in Section 1202.3, would be tested using the criteria found in Section 1213.3.
2. The regulations found in Chapter 12, per Section 1201.1, only apply to fuel gas systems with pressures of 5 psi or less. Testing for a 10 psi system should be tested using requirements found in NFPA 58.
3. No.
4. Yes. Per Section 6.14.1.1 of NFPA 58 requires piping to be tested at not less than normal operating pressure for the system.
2. The regulations found in Chapter 12, per Section 1201.1, only apply to fuel gas systems with pressures of 5 psi or less. Testing for a 10 psi system should be tested using requirements found in NFPA 58.
3. No.
4. Yes. Per Section 6.14.1.1 of NFPA 58 requires piping to be tested at not less than normal operating pressure for the system.
UPC 2018 1201.1, 1213.3
Topic: Applicability, Test Pressure
A review of the amended language in the 2018 UPC, Section 1201.1 now including 10 psi undiluted propane systems, does this place the pressure testing requirements for LPG systems operating at up to 10 psi in section 1213.3, instead of NFPA 58?
Comment:
Previously submitted UPC 19-92 was answered based on 2015 UPC. Trying to confirm the added language in 1201.1 now moves the testing requirements to UPC Section 1213.3.
Comment:
Previously submitted UPC 19-92 was answered based on 2015 UPC. Trying to confirm the added language in 1201.1 now moves the testing requirements to UPC Section 1213.3.
Yes. Section 102.1 of the 2018 Uniform Plumbing Code states that “…In instances where this code, applicable standards, or the manufacturer’s installation instructions conflict, the more stringent provision shall prevail”. The requirements for testing LPG gas systems, found in Section 1213.3 of the 2018 UPC are more restrictive than those found in NFPA 58, Section 6.14.1.1, which allows the piping to be tested with normal operating pressure.
UPC 2012 1210.1.3, 1208.5.6
Topic: Protection Against Corrosion
Is the intent of section 1210.1.3 & 1208.5.6 that all black gas pipe outside has to be painted or just gas pipe within 6” of the ground?
Comment:
City of Salina inspection dept. is calling for all outside gas pipe to be painted.
Comment:
City of Salina inspection dept. is calling for all outside gas pipe to be painted.
It is not the intent of Section 1208.5.6 to require all above grade outdoor gas piping to be painted. The local Authority Having Jurisdiction must first determine if an “atmosphere exerting a corrosive action” exists and if so, what type of corrosion-resistant coating is needed to protect the pipe.
UPC 2018 1210.1
Topic: Piping Underground
What is the required vertical and horizontal distance underground from a GAS LINE to all other plumbing lines?
The 2018 Uniform Plumbing Code addresses the clearance of underground gas piping from structures in Section 1210.1. The Code does not however, have requirements for the vertical or horizontal separation of buried gas piping from other plumbing pipes or utilities.
Note: Good plumbing practice would suggest that enough separation between a buried gas line and other pipe or utilities to allow for maintenance and repair would be prudent.
Note: Good plumbing practice would suggest that enough separation between a buried gas line and other pipe or utilities to allow for maintenance and repair would be prudent.
UPC 2018 1210.9.3
Topic: Emergency Shutoff Valves.
1. Would this requirement apply to a municipal sewage lift station at a remote site, which is enclosed by a concrete block security fence?
2. Is it permissible to locate the shutoff valve inside the fence, to prevent tampering?
Comment:
The fuel gas service for the lift station serves an emergency generator, which will power the lift station should utility power be interrupted.
For added reliability, there will be a liquefied petroleum gas storage tank within the security fence, which will provide fuel should utility gas be interrupted.
The gas utility company has indicated that their meter can be located within the fence provided they have access to it. The planned arrangement for access will be multiple padlocks that are daisy-chained together.
2. Is it permissible to locate the shutoff valve inside the fence, to prevent tampering?
Comment:
The fuel gas service for the lift station serves an emergency generator, which will power the lift station should utility power be interrupted.
For added reliability, there will be a liquefied petroleum gas storage tank within the security fence, which will provide fuel should utility gas be interrupted.
The gas utility company has indicated that their meter can be located within the fence provided they have access to it. The planned arrangement for access will be multiple padlocks that are daisy-chained together.
1. Yes. Section 1210.9.3 of the 2018 Uniform Plumbing Code (UPC) states that “an exterior shutoff valve to permit turning off the gas supply to each building in an emergency shall be provided”.
2. Yes. The Code does not give an exact location of the emergency shutoff valve, it merely requires the shutoff valve to be plainly marked as required by the AHJ. The emergency shutoff valve may be located inside the fence to prevent tampering.
2. Yes. The Code does not give an exact location of the emergency shutoff valve, it merely requires the shutoff valve to be plainly marked as required by the AHJ. The emergency shutoff valve may be located inside the fence to prevent tampering.
UPC 2015 1210.2.2.1, 1210.11
Topic: Ceiling Locations
1. When a natural gas pressure regulator is located in a ceiling space and a gas shutoff valve is required upstream of a gas pressure regulator, how is that accomplished taking into account both UPC sections?
Scenario:
Multistory building with medium pressure natural gas riser serving multiple floors. Branches for each floor occur between the slab for the next floor and a framed ceiling for the floor being served. A gas pressure regulator is required for the branch and Section 1210.11 requires a shutoff valve upstream of pressure regulators. An access panel will be provided to service the pressure regulator.
Scenario:
Multistory building with medium pressure natural gas riser serving multiple floors. Branches for each floor occur between the slab for the next floor and a framed ceiling for the floor being served. A gas pressure regulator is required for the branch and Section 1210.11 requires a shutoff valve upstream of pressure regulators. An access panel will be provided to service the pressure regulator.
Per Section 1210.2.2 of the 2015 Uniform Plumbing Code (UPC), fuel gas shutoff valves shall not be located in the space between a fixed ceiling and dropped ceiling. The exception for that section however does permit the installation of accessible fuel gas shutoff valves for appliances or equipment, if located in those spaces. Equipment is not defined in the UPC. The Authority Having Jurisdiction, per Section 103.1, has the power to interpret if the term “equipment” would include pressure regulators
UPC 2018 1210.10, 1208.6.11.4(5)(b)
Topic: Prohibited Devices
1. Are Black Iron Malleable bushings illegal to use in a typical gas piping system?
2. Does section 1210.10 apply to bushings?
3. What type of devices is section 1210.10 referring to?
Comment:
According to 1208.6.11.4(5)(b) Bushings shall not be use in a cast iron gas piping system. Section 1210.10 — No DEVICE shall be placed inside the gas piping or fittings that reduce the cross-sectional area or otherwise obstructs the free flow of gas unless engineered and approved.
Just trying to clear thing up for myself and crew.
2. Does section 1210.10 apply to bushings?
3. What type of devices is section 1210.10 referring to?
Comment:
According to 1208.6.11.4(5)(b) Bushings shall not be use in a cast iron gas piping system. Section 1210.10 — No DEVICE shall be placed inside the gas piping or fittings that reduce the cross-sectional area or otherwise obstructs the free flow of gas unless engineered and approved.
Just trying to clear thing up for myself and crew.
1. No. Section 1208.6.11.4(5) of the 2018 Uniform Plumbing Code prohibits the use of cast iron bushings. Cast iron, due to its brittle characteristics will facture before bending and is not considered a malleable material. Black and galvanized malleable bushings, per Sections 1208.6.11.4(2)and 1210.3(1) of the 2018 Uniform Plumbing Code, would be acceptable for installation in gas distribution systems in both accessible and concealed locations.
2. No. A bushing is simply a reducing fitting, no different than a reducing coupling. It is used to decreases the pipe size in a distribution system to the required size for a branch or appliance.
3. Any device placed inside the gas pipe or fittings that reduces the cross-sectional area or obstructs the free flow of gas, e.g. filters, screens, non-approved shut off or control valves.
2. No. A bushing is simply a reducing fitting, no different than a reducing coupling. It is used to decreases the pipe size in a distribution system to the required size for a branch or appliance.
3. Any device placed inside the gas pipe or fittings that reduces the cross-sectional area or obstructs the free flow of gas, e.g. filters, screens, non-approved shut off or control valves.
UPC 2018 1210.1
Topic: Piping Underground
What is the required vertical and horizontal distance underground from a GAS LINE to all other plumbing lines?
The 2018 Uniform Plumbing Code addresses the clearance of underground gas piping from structures in Section 1210.1. The Code does not however, have requirements for the vertical or horizontal separation of buried gas piping from other plumbing pipes or utilities.
Note: Good plumbing practice would suggest that enough separation between a buried gas line and other pipe or utilities to allow for maintenance and repair would be prudent.
Note: Good plumbing practice would suggest that enough separation between a buried gas line and other pipe or utilities to allow for maintenance and repair would be prudent.
UPC 2018 1210.10, 1208.6.11.4(5)(b)
Topic: Prohibited Devices
1. Are Black Iron Malleable bushings illegal to use in a typical gas piping system?
1. No. Section 1208.6.11.4(5) of the 2018 Uniform Plumbing Code prohibits the use of cast iron bushings. Cast iron, due to its brittle characteristics will facture before bending and is not considered a malleable material. Black and galvanized malleable bushings, per Sections 1208.6.11.4(2)and 1210.3(1) of the 2018 Uniform Plumbing Code, would be acceptable for installation in gas distribution systems in both accessible and concealed locations.
UPC 2003 1212.1(7)
UPC 2006 1212.1(7)
UPC 2009 1212.1(8)
UPC 2012 1212.(8)
UPC 2015 1212.1(7)
Topic: Gas Connector
Section 1212.1(7) Connecting Gas Appliances. Residential kitchen freestanding range gas valve is located in cabinet next to range. Can I use a flex connector from valve in cabinet, through a hole in wood cabinet to connect to range? Section 1212.1(7) States I cannot go through cabinet UNLESS PROTECTED. Can you define how to protect a flex connector?
The gas line needs to be protected from the gas line rubbing against the opening to a cabinet to prevent a hole being made over time from normal uses and vibrations. Protection can be a rubber or plastic grommet or braced so as the piping is held centered in the opening. The means to protect a gas flex passing through a cabinet wall, as prescribed in Section 1212.1(7) of the 2015 UPC, would be determined by the Authority Having Jurisdiction in your area.
UPC 2012 1213.3
UPC 2015 1213.3
Topic: Test Pressure
1. Please clarify the specific test requirement for poly gas pipe with heat fusion joints operating at 7 inches W.C.
The Uniform Plumbing Code does not provide a definition of a welded joint. The Webster’s Dictionary however defines the process of welding as follows; a)to unite (metallic parts) by heating and allowing the metals to flow together or by hammering or compressing with or without previous heating, 2)to unite (plastics) in a similar manner by heating. Section 1213.3 of the 2012 UPC requires welded pipe to be tested with a 60 psi test for not less than 30 minutes.
UPC 2003 1211.1.6
UPC 2006 1211.1.6
UPC 2009 1211.1.6
UPC 2012 1210.1.6
UPC 2015 1210.1.6
Topic: Piping Underground Beneath Building
Are there any circumstances where LP gas piping is allowed to be installed underslab to an island range?
Chapter 12 of the 2015 Uniform Plumbing Code, “governs the installation of fuel gas* piping in or in connection with a building, structure or within the property lines of premises up to 5 pounds-force per square inch (psi), other than service pipe.”
* Fuel gas by definition is “natural, manufactured, liquefied petroleum, or a mixture of these.”
Yes. Section 1210.1.6 provides installation requirements for fuel gas piping installed underground beneath buildings.
Other than sizing (see Section 1215.1), the Uniform Plumbing Code does not differentiate the installation requirements between liquefied petroleum gas and natural gas.
* Fuel gas by definition is “natural, manufactured, liquefied petroleum, or a mixture of these.”
Yes. Section 1210.1.6 provides installation requirements for fuel gas piping installed underground beneath buildings.
Other than sizing (see Section 1215.1), the Uniform Plumbing Code does not differentiate the installation requirements between liquefied petroleum gas and natural gas.
UPC 2003 1213.0
UPC 2006 1213.0
UPC 2009 1213.0
UPC 2012 1212.1
UPC 2015 1212.10
Topic: Liquefied Petroleum Gas Facilities and Piping
Is installing an LPG fired water heater or other LPG fired appliance located in a pit or basement where LPG might collect to form a flammable mixture still prohibited?
No. The 2000 Uniform Plumbing Code was the last edition of the code that addressed the installation of Liquefied Petroleum Gas (LPG) equipment in a pit or basement. Section 1212.10 of the 2015 UPC requires LPG facilities to comply with NFPA 58. Nothing in that document restricts the installation of LPG appliances in a pit or basement.