LIQUEFIED PETROLEUM GAS CODE
58-144
Window air
conditioner
(source of
ignition)
rectIntake to di nce
vent applia
5 ft (min)
(Note 1)
Central AC
compressor
(source of ignition)
5 ft (min)
(Note 1)
10 ft (min)
(Note 2)
Cylinder filled on
3 ft
site at the point
(min)
of use from
(Note 3)
bulk truck
3 ft
(min)
(Note 3)
Cylinders not filled on site
at the point of use
Crawl space opening,
windows, or exhaust fan
For SI units, 1 ft = 0.3048 m.
Notes:
(1) 5 ft minimum from relief valve in any direction away from any exterior source of ignition, openings into direct-vent appliances,
or mechanical ventilation air intakes. Refer to Table 6.3.4.3.
(2) If the cylinder is filled on site at the point of use from a cargo tank motor vehicle, the filling connection and vent valve must be at least
10 ft from any exterior source of ignition, openings into direct-vent appliances, or mechanical ventilation air intakes.
Refer to 6.3.4.4.
(3) Refer to 6.3.4.3.
FIGURE I.1(a)
2017 Edition
Cylinders. (Figure for illustrative purposes only; code compliance required.)
ANNEX I
58-145
Central AC
compressor
(source of ignition)
10 ft (min)
(Note 1)
Intake to directvent appliance
r 125
Undel w.c.
ga
Under 125
gal w.c.
10 ft (min)
(Note 1) 5 ft (min)
(Note 2)
25 ft
(min)
(Note 3)
Window air
10 ft (min)
10 ft (min) conditioner
(Note 1) (source of
ignition)
125
gal –500
w.c
.
10 ft
(min)
501
–20
00
gal
w.c
.
25 ft
(min)
(Note 3)
For SI units, 1 ft = 0.3048 m.
Nearest line of adjoining
property that can be built
upon
Notes:
(1) Regardless of its size, any ASME container filled on site must be located so that the filling connection and fixed
maximum liquid level gauge are at least 10 ft from any external source of ignition (e.g., open flame, window AC, compressor),
intake to direct-vented gas appliance, or intake to a mechanical ventilation system. Refer to 6.3.4.4.
(2) Refer to 6.3.4.3.
(3) This distance can be reduced to no less than 10 ft for a single container of 1200 gal (4.5 m3) water capacity or less, provided such container is
at least 25 ft from any other LP-Gas container of more than 125 gal (0.5 m3) water capacity. Refer to 6.3.1.3.
FIGURE I.1(b)
Aboveground ASME Containers. (Figure for illustrative purposes only; code compliance required.)
2017 Edition
LIQUEFIED PETROLEUM GAS CODE
58-146
Window air
conditioner
(source of ignition)
Intake to directvent appliance
10 ft (min)
(Note 1)
10 ft (min)
(Note 1)
Central AC
compressor
(source of ignition)
10 ft (min)
(Note 1)
2000
or les gal w.c.
s
For SI units, 1 ft = 0.3048 m.
10 ft (min)
(Note 2)
Crawl space opening,
window, or exhaust fan
10 ft (min)
(Note 2)
Nearest line of adjoining property that can be
built upon
Notes:
(1) The relief valve, filling connection, and fixed maximum liquid level gauge vent connection at the container must be at least 10 ft from any exterior
source of ignition, openings into direct-vent appliances, or mechanical ventilation air intakes. Refer to 6.3.4.4.
(2) No part of an underground container can be less than 10 ft from an important building or line of adjoining property that can be built upon.
Refer to 6.3.2.3.
FIGURE I.1(c)
Underground ASME Containers. (Figure for illustrative purposes only; code compliance required.)
Annex J Sample Ordinance Adopting NFPA 58
This annex is not a part of the requirements of this NFPA document
but is included for informational purposes only.
J.1 The following sample ordinance is provided to assist a
jurisdiction in the adoption of this code and is not part of this
code.
ORDINANCE NO. ____________
An ordinance of the [jurisdiction] adopting the 2017 edition
of NFPA 58, Liquefied Petroleum Gas Code, documents listed in
Chapter 2 of that code; prescribing regulations governing
conditions hazardous to life and property from fire or explo‐
sion; providing for the issuance of permits and collection of
fees; repealing Ordinance No. _______ of the [jurisdiction] and
all other ordinances and parts of ordinances in conflict there‐
with; providing a penalty; providing a severability clause; and
providing for publication; and providing an effective date.
BE IT ORDAINED BY THE [governing body] OF THE [juris‐
diction]:
SECTION 1 That the Liquefied Petroleum Gas Code and docu‐
ments adopted by Chapter 2, three (3) copies of which are on
file and are open to inspection by the public in the office of the
[jurisdiction's keeper of records] of the [jurisdiction], are hereby
adopted and incorporated into this ordinance as fully as if set
2017 Edition
out at length herein, and from the date on which this ordi‐
nance shall take effect, the provisions thereof shall be control‐
ling within the limits of the [jurisdiction]. The same are hereby
adopted as the code of the [jurisdiction] for the purpose of
prescribing regulations governing conditions hazardous to life
and property from fire or explosion and providing for issuance
of permits and collection of fees.
SECTION 2 Any person who shall violate any provision of
this code or standard hereby adopted or fail to comply there‐
with; or who shall violate or fail to comply with any order made
thereunder; or who shall build in violation of any detailed state‐
ment of specifications or plans submitted and approved there‐
under; or failed to operate in accordance with any certificate or
permit issued thereunder; and from which no appeal has been
taken; or who shall fail to comply with such an order as
affirmed or modified by or by a court of competent jurisdic‐
tion, within the time fixed herein, shall severally for each and
every such violation and noncompliance, respectively, be guilty
of a misdemeanor, punishable by a fine of not less than $ _____
nor more than $_____ or by imprisonment for not less than
______ days nor more than ______ days or by both such fine
and imprisonment. The imposition of one penalty for any viola‐
tion shall not excuse the violation or permit it to continue; and
all such persons shall be required to correct or remedy such
violations or defects within a reasonable time; and when not
otherwise specified the application of the above penalty shall
ANNEX L
not be held to prevent the enforced removal of prohibited
conditions. Each day that prohibited conditions are maintained
shall constitute a separate offense.
SECTION 3 Additions, insertions, and changes — that the
2017 edition of NFPA 58, Liquefied Petroleum Gas Code, is amen‐
ded and changed in the following respects:
List Amendments
SECTION 4 That ordinance No. _________ of [jurisdiction]
entitled [fill in the title of the ordinance or ordinances in effect at the
present time] and all other ordinances or parts of ordinances in
conflict herewith are hereby repealed.
SECTION 5 That if any section, subsection, sentence, clause,
or phrase of this ordinance is, for any reason, held to be invalid
or unconstitutional, such decision shall not affect the validity
or constitutionality of the remaining portions of this ordi‐
nance. The [governing body] hereby declares that it would have
passed this ordinance, and each section, subsection, clause, or
phrase hereof, irrespective of the fact that any one or more
sections, subsections, sentences, clauses, and phrases be
declared unconstitutional.
SECTION 6 That the [jurisdiction's keeper of records] is hereby
ordered and directed to cause this ordinance to be published.
[NOTE: An additional provision may be required to direct
the number of times the ordinance is to be published and to
specify that it is to be in a newspaper in general circulation.
Posting may also be required.]
SECTION 7 That this ordinance and the rules, regulations,
provisions, requirements, orders, and matters established and
adopted hereby shall take effect and be in full force and effect
[time period] from and after the date of its final passage and
adoption.
58-147
K.2.4 The backfill material used to cover the container should
be compacted soil or coarse sand. Backfill material containing
crushed rock or other material that could damage the
container coating should be avoided.
K.3 Inspection and Testing of Corrosion Protection.
K.3.1 A periodic test program should be established to moni‐
tor the effectiveness of the corrosion protection for the
container. Inspection records should be made available to the
container owner. [See 6.8.6.1(K).]
Annex L Suggested Methods of Checking for Leakage
This annex is not a part of the requirements of this NFPA document
but is included for informational purposes only.
L.1 Suggested Methods of Checking for Leakage.
L.1.1 This section describes several methods for conducting a
leak check on an LP-Gas system before placing it back into serv‐
ice.
L.1.2 For Gas Systems Using Undiluted LP-Gas System Preparation
for Propane. A leak check performed on an LP-Gas system being
placed back in service can be performed by using one of the
following methods:
(1)
(2)
Annex K Burial and Corrosion Protection for Underground
and Mounded ASME Containers
This annex is not a part of the requirements of this NFPA document
but is included for informational purposes only.
K.1 Scope.
K.1.1 This annex provides general information for the burial
of underground and mounded ASME containers of 125 gal
through 2000 gal (0.5 m3 through 7.6 m3) water capacity.
K.1.2 The location for underground and mounded ASME
containers must comply with applicable sections of Chapter 6
of this code and federal and state codes.
K.2 Container Preparation and Burial.
K.2.1 Prior to burial, the container should be inspected for
any coating damage that could have been caused during the
installation process.
K.2.2 Cathodic protection should be considered as an addi‐
tional method to minimize corrosion. Anodes are used in this
process and should be attached to the container according to
the anode manufacturer's instructions. The number and size of
anodes installed varies, depending on the container size.
(3)
Insert a pressure gauge between the container gas shutoff
valve and the first-stage regulator or integral two-stage
regulator in the system, admitting full container pressure
to the system and then closing the container shutoff
valve. Enough gas should then be released from the
system to lower the pressure gauge reading by 10 psi
(69 kPa). The system should then be allowed to stand for
3 minutes without showing an increase or a decrease in
the pressure gauge reading. [54: C.3(2)(a)]
Insert a gauge/regulator test assembly between the
container gas shutoff valve and first-stage regulator or
integral two-stage regulator in the system. If a gauge/
regulator test assembly with an inches water column
gauge is inserted, follow the test requirements in (3)
below; if a gauge/regulator test assembly with a 30 psi
gauge is inserted, follow the test requirements in (4). [54:
C.3(2)(b)]
For systems with an integral two-stage, one or more
second-stage, or one or more line pressure regulators
serving appliances that receive gas at pressures of 1∕2 psi
(3.5 kPa) or less, insert a water manometer or inches
water column gauge into the system downstream of the
final stage regulator, pressurizing the system with either
fuel gas or air to a test pressure of 9 in. w.c. ± 1∕2 in. w.c.
(2.2 kPa ± 0.1 kPa), and observing the device for a pres‐
sure change. If fuel gas is used as a pressure source, it is
necessary to pressurize the system to full operating pres‐
sure, close the container service valve, and then release
enough gas from the system through a range burner valve
or other suitable means to drop the system pressure to
9 in. w.c. ± 1∕2 in. w.c. (2.2 kPa ± 0.1 kPa). This ensures that
all regulators in the system upstream of the test point are
unlocked and that a leak anywhere in the system is
communicated to the gauging device. The gauging device
should indicate no loss or gain of pressure for a period of
3 minutes. [54: C.3(2)(c)]
K.2.3 Dielectric couplings should be used to isolate the
container from the piping when using metallic piping (e.g.,
copper, steel) to minimize current flow.
2017 Edition