Ohio Administrative Code
Title 1301:7 - Division of State Fire Marshal
Chapter 1301:7-7 - Ohio Fire Code
Section 1301:7-7-60 - Highly toxic and toxic materials
Universal Citation: OH Admin Code 1301:7-7-60
Current through all regulations passed and filed through September 16, 2024
(A) Section 6001 General
(1)
6001.1 Scope.
The
storage and use of highly toxic and toxic materials shall comply with this
rule. Compressed gases shall also comply with rule
1301:7-7-53 of
the Administrative Code.
Exceptions:
1.
Display and
storage in Group M and storage in Group S occupancies complying with
paragraph (C)(11)( 5003.11) of rule
1301:7-7-50
of the Administrative Code.
2.
Conditions
involving pesticides or agricultural products as follows:
2.1
Application and
release of pesticide, agricultural products and materials intended for use in
weed abatement, erosion control, soil amendment or similar applications when
applied in accordance with the manufacturer's instruction and label
directions.
2.2
Transportation of pesticides in compliance with the
Federal Hazardous Materials Transportation Act and regulations
thereunder.
2.3
Storage in dwellings or private garages of pesticides
registered by the U.S. Environmental Protection Agency to be utilized in and
around the home, garden, pool, spa and patio.
(2)
6001.2 Permits.
Permits
shall be required as set forth in rule
1301:7-7-01
of the Administrative Code.
(B) Section 6002 Definitions
(1)
6002.1 Definitions. The following terms
are defined in rule
1301:7-7-02 of the
Administrative Code.
"Containment system."
"Containment vessel."
"Excess flow valve."
"Highly toxic."
"Ozone-gas generator."
"Physiological warning threshold level."
"Reduced flow valve."
"Toxic."
(C) Section 6003 Highly toxic and toxic solids and liquids
(1)
6003.1 Indoor storage and use. The indoor
storage and use of highly toxic and toxic materials shall comply with
paragraphs(C)(1)(a)(6003.1.1) to
(C)(1)(e)(iii)(6003.1.5.3) of this rule.
(a)
6003.1.1
Quantities not exceeding the maximum allowable quantity per control
area.
The indoor storage or use of highly
toxic and toxic solids or liquids in amounts not exceeding the maximum
allowable quantity per control area indicated in Table 5003.1.1(2) of
rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(5001) and (C)(5003) of rule
1301:7-7-50
of the Administrative Code and paragraph (A)(6001) of this
rule.
(b)
6003.1.2 Quantities exceeding the maximum allowable quantity
per control area.
The indoor storage or
use of highly toxic and toxic solids or liquids in amounts exceeding the
maximum allowable quantity per control area set forth in Table 5003.1.1(2)
of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(6001), (C)(1)(c)(6003.1.3) to
(C)(1)(e)(iii)(6003.1.5.3) of this rule and rule
1301:7-7-50
of the Administrative Code.
(c)
6003.1.3
Treatment system-highly toxic liquids.
Exhaust scrubbers or other systems for processing vapors of
highly toxic liquids shall be provided where a spill or accidental release of
such liquids can be expected to release highly toxic vapors at normal
temperature and pressure. Treatment systems and other processing systems shall
be installed in accordance with the mechanical code as listed in rule
1301:7-7-80
of the Administrative Code.
(d)
6003.1.4
Indoor storage.
Indoor storage of highly
toxic and toxic solids and liquids shall comply with
paragraphs (C)(1)(d)(i)(6003.1.4.1) and
(C)(1)(d)(ii)(6003.1.4.2) of this rule.
(i)
6003.1.4.1
Floors. In addition to the requirements set forth in
paragraph (D)(12)( 5004.12) of rule
1301:7-7-50
of the Administrative Code, floors of storage areas where highly toxic
and toxic liquids are stored shall be of liquid-tight
construction.
(ii)
6003.1.4.2 Separation-highly toxic solids and
liquids. In addition to the requirements set forth in
paragraph (C)(9)(h)(5003.9.8) of rule
1301:7-7-50
of the Administrative Code, highly toxic solids and liquids in storage
shall be located in approved hazardous material storage cabinets or isolated
from other hazardous material storage by construction in accordance with the
building code as listed in rule
1301:7-7-80
of the Administrative Code.
(e)
6003.1.5
Indoor use.Indoor use of highly toxic and
toxic solids and liquids shall comply with paragraphs
(C)(1)(e)(i)(6003.1.5.1) to (C)(1)(e)(iii)(6003.1.5.3)
of this rule.
(i)
6003.1.5.1 Liquid transfer. Highly toxic
and toxic liquids shall be transferred in accordance with paragraph
(E) (1) (j)(5005.1.10) of rule
1301:7-7-50
of the Administrative Code.
(ii)
6003.1.5.2
Exhaust ventilation for open systems. Mechanical exhaust ventilation
shall be provided for highly toxic and toxic liquids used in open systems in
accordance with paragraph (E)(2)(a)(i)(5005.2.1.1) of
rule
1301:7-7-50
of the Administrative Code.
Exception: Liquids that do not generate highly toxic or toxic fumes, mists or vapors.
(iii)
6003.1.5.3 Exhaust ventilation for closed systems.
Mechanical exhaust ventilation shall be provided for highly toxic and
toxic liquids used in closed systems in accordance with
paragraph (E)(2)(b)(i)(5005.2.2.1) of rule
1301:7-7-50
of the Administrative Code.
Exception: Liquids that do not generate highly toxic or toxic fumes, mists or vapors.
(2)
6003.2
Outdoor storage and use. Outdoor storage and use of highly toxic and
toxic materials shall comply with paragraphs
(C)(2)(a)(6003.2.1) to (C)(2)(f)(6003.2.6) of this
rule.
(a)
6003.2.1 Quantities not exceeding the maximum allowable
quantity per control area.The outdoor
storage or use of highly toxic and toxic solids or liquids in amounts not
exceeding the maximum allowable quantity per control area indicated in Table
5003.1.1(4) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(5001) and (C)(5003) of rule
1301:7-7-50
of the Administrative Code and paragraph (A)(6001) of this
rule.
(b)
6003.2.2 Quantities exceeding the maximum allowable quantity
per control area.The outdoor storage or
use of highly toxic and toxic solids or liquids in amounts exceeding the
maximum allowable quantity per control area set forth in Table 5003.1.1(4)
of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(6001) and (C)(2)( 6003.2) of this
rule and rule
1301:7-7-50
of the Administrative Code.
(c)
6003.2.3
General outdoor requirements.
The general
requirements applicable to the outdoor storage of highly toxic or toxic solids
and liquids shall be in accordance with paragraphs
(C)(2)(c)(i)(6003.2.3.1) and (C)(2)(c)(ii)(6003.2.3.2) of this
rule .
(i)
6003.2.3.1 Location. Outdoor storage or
use of highly toxic or toxic solids and liquids shall not be located within 20
feet (6096 mm) of lot lines, public streets, public alleys, public ways, exit
discharges or exterior wall openings. A 2-hour fire barrier wall without
openings or penetrations extending not less than 30 inches (762 mm) above and
to the sides of the storage is allowed in lieu of such distance. The wall shall
either be an independent structure, or the exterior wall of the building
adjacent to the storage area.
(ii)
6003.2.3.2
Treatment system-highly toxic liquids. Exhaust scrubbers or other
systems for processing vapors of highly toxic liquid shall be provided where a
spill or accidental release of such liquids can be expected to release highly
toxic vapors at normal temperature pressure (NTP). Treatment systems and other
processing systems shall be installed in accordance with the mechanical
code as listed in rule
1301:7-7-80
of the Administrative Code.
(d)
6003.2.4
Outdoor storage piles.
Outdoor storage
piles of highly toxic and toxic solids and liquids shall be separated into
piles not larger than 2,500 cubic feet (71 m3).
Aisle widths between piles shall be not less than one-half the height of the
pile or 10 feet (3048 mm), whichever is greater.
(e)
6003.2.5
Weather protection for highly toxic liquids and solids-outdoor storage or
use.
Where overhead weather protection is
provided for outdoor storage or use of highly toxic liquids or solids, and the
weather protection is attached to a building, the storage area shall either be
equipped throughout with an approved automatic sprinkler system in accordance
with paragraph (C)(3)(a)(i)(903.3.1.1) of rule
1301:7-7-09
of the Administrative Code, or storage or use vessels shall be fire
resistive. Weather protection shall be provided in accordance with
paragraph (D)(13)( 5004.13) of rule
1301:7-7-50
of the Administrative Code for storage and paragraph
(E)(3)(i)(5005.3.9) of rule
1301:7-7-50
of the Administrative Code for use.
(f)
6003.2.6
Outdoor liquid transfer.
Highly toxic and
toxic liquids shall be transferred in accordance with paragraph
(E)(l)(j)(5005.1.10) of rule
1301:7-7-50
of the Administrative Code.
(D) Section 6004 Highly toxic and toxic compressed gases
(1)
6004.1
General. The storage and use of highly toxic and toxic compressed gases
shall comply with this paragraph.
(a)
6004.1.1
Special limitations for indoor storage and use by occupancy. The indoor
storage and use of highly toxic and toxic compressed gases in certain
occupancies shall be subject to the limitations contained in paragraphs
(D)(1)(a)(i)(6004.1.1.1) to
(D)(1)(a)(iii)(6004.1.1.3) of this rule.
(i)
6004.1.1.1
Group A, E, I or U occupancies. Toxic and highly toxic compressed gases
shall not be stored or used within Group A, E, I or U occupancies.
Exception: Cylinders not exceeding 20 cubic feet ( 0.566 m3) at normal temperature and pressure (NTP) are allowed within gas cabinets or fume hoods.
(ii)
6004.1.1.2
Group R occupancies. Toxic and highly toxic compressed gases shall not
be stored or used in Group R occupancies.
(iii)
6004.1.1.3 Offices, retail sales and
classrooms. Toxic and highly toxic compressed gases shall not be stored
or used in offices, retail sales or classroom portions of Group B, F, M or S
occupancies.
Exception: In classrooms of Group B occupancies, cylinders with a capacity not exceeding 20 cubic feet ( 0.566 m3) at NTP are allowed in gas cabinets or fume hoods.
(b)
6004.1.2 Gas cabinets.
Gas cabinets containing highly toxic or toxic compressed
gases shall comply with paragraph (C)(8)(f)(5003.8.6)
of rule
1301:7-7-50
of the Administrative Code and the following requirements:
(i)
The average
ventilation velocity at the face of gas cabinet access ports or windows shall
be not less than 200 feet per minute (1.02 m/s) with not less than 150
feet per minute ( 0.76 m/s) at any point of the access port or
window.
(ii)
Gas cabinets shall be connected to an exhaust
system.
(iii)
Gas cabinets shall not be used as the sole means of
exhaust for any room or area.
(iv)
The maximum
number of cylinders located in a single gas cabinet shall not exceed three,
except that cabinets containing cylinders not exceeding 1 pound ( 0.454 kg) net
contents are allowed to contain up to 100 cylinders.
(v)
Gas cabinets
required by paragraph (D)(2)( 6004.2) or (D)(3)( 6004.3)
of this rule shall be equipped with an approved automatic
sprinkler system in accordance with paragraph
(C)(3)(a)(i)(903.3.1.1) of rule
1301:7-7-09
of the Administrative Code. Alternative fire-extinguishing systems
shall not be used.
(c)
6004.1.3
Exhausted enclosures.
Exhausted enclosures
containing highly toxic or toxic compressed gases shall comply with
paragraph (C)(8)(e)(5003.8.5) of rule
1301:7-7-50
of the Administrative Code and the following requirements:
(i)
The average
ventilation velocity at the face of the enclosure shall be not less than 200
feet per minute (1.02 m/s) with not less than 150
feet per minute ( 0.76 m/s).
(ii)
Exhausted
enclosures shall be connected to an exhaust system.
(iii)
Exhausted
enclosures shall not be used as the sole means of exhaust for any room or
area.
(iv)
Exhausted enclosures required by
paragraph (D)(2)( 6004.2) or (D)(3)( 6004.3) of this
rule shall be equipped with an approved automatic sprinkler system in
accordance with paragraph (C)(3)(a)(i)(903.3.1.1) of
rule
1301:7-7-09
of the Administrative Code. Alternative fire-extinguishing systems
shall not be used.
(2)
6004.2
Indoor storage and use. The indoor storage and use of highly toxic or
toxic compressed gases shall be in accordance with paragraphs
(D)(2)(a)(6004.2.1) to (D)(2)(b)(x)(d)
(6004.2.2.10.4) of this rule.
(a)
6004.2.1
Applicability.
The applicability of
regulations governing the indoor storage and use of highly toxic and toxic
compressed gases shall be as set forth in paragraphs
(D)(2)(a)(i)(6004.2.1.1) to (D)(2)(a)(iii)(6004.2.1.3)
of this rule.
(i)
6004.2.1.1 Quantities not exceeding the maximum
allowable quantity per control area. The indoor storage or use of highly
toxic and toxic gases in amounts not exceeding the maximum allowable quantity
per control area set forth in Table 5003.1.1(2) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(5001) and (C)(5003) of rule
1301:7-7-50
of the Administrative Code, and paragraphs (A)(6001)
and (D)(1)( 6004.1) of this rule.
(ii)
6004.2.1.2 Quantities exceeding the maximum allowable quantity per
control area. The indoor storage or use of highly toxic and toxic gases
in amounts exceeding the maximum allowable quantity per control area set forth
in Table 5003.1.1(2) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(6001), (D)(1)( 6004.1) and (D)(2)( 6004.2)
of this rule and rule
1301:7-7-50
of the Administrative Code.
(iii)
6004.2.1.3 Ozone gas generators. The indoor use of ozone
gas-generating equipment shall be in accordance with paragraph
(E)(6005) of this rule.
(b)
6004.2.2
General indoor requirements.
The general
requirements applicable to the indoor storage and use of highly toxic and toxic
compressed gases shall be in accordance with paragraphs
(D)(2)(b)(i)(6004.2.2.1) to (D)(2)(b)(x)(d)
(6004.2.2.10.4) of this rule .
(i)
6004.2.2.1
Cylinder and tank location. Cylinders shall be located within gas
cabinets, exhausted enclosures or gas rooms. Portable and stationary tanks
shall be located within gas rooms or exhausted enclosures.
(ii)
6004.2.2.2
Ventilated areas. The room or area in which gas cabinets or exhausted
enclosures are located shall be provided with exhaust ventilation. Gas cabinets
or exhausted enclosures shall not be used as the sole means of exhaust for any
room or area.
(iii)
6004.2.2.3 Leaking cylinders and tanks.
One or more gas cabinets or exhausted enclosures shall be provided to
handle leaking cylinders, containers or tanks.
Exceptions:
1.
Where cylinders,
containers or tanks are located within gas cabinets or exhausted
enclosures.
2.
Where approved containment vessels or containment
systems are provided in accordance with all of the following:
2.1
Containment
vessels or containment systems shall be capable of fully containing or
terminating a release.
2.2
Trained personnel shall be available at an approved
location.
2.3
Containment vessels or containment systems shall be
capable of being transported to the leaking cylinder, container or tank.
(a)
6004.2.2.3.1 Location.
Gas cabinets and exhausted enclosures shall be located in
gas rooms and connected to an exhaust system.
(iv)
6004.2.2.4
Local exhaust for portable tanks.A means of local exhaust shall be
provided to capture leaks from portable tanks. The local exhaust shall consist
of portable ducts or collection systems designed to be applied to the site of a
leak in a valve or fitting on the tank. The local exhaust system shall be
located in a gas room. Exhaust shall be directed to a treatment system in
accordance with paragraph (D)(2)(b)(vii)(6004.2.2.7)
of this rule.
(v)
6004.2.2.5
Piping and controls-stationary tanks. In addition to the requirements of
paragraph (C)(2)(b)(5003.2.2) of rule
1301:7-7-50
of the Administrative Code, piping and controls on stationary tanks
shall comply with the following requirements:
(a)
Pressure relief
devices shall be vented to a treatment system designed in accordance with
paragraph (D)(2)(b) (vii)(6004.2.2.7)
of this rule.
Exception: Pressure relief devices on outdoor tanks provided exclusively for relieving pressure due to fire exposure are not required to be vented to a treatment system provided that:
1.
The material in
the tank is not flammable.
2.
The tank is not located in a diked area with other
tanks containing combustible materials.
3.
The tank is
located not less than 30 feet (9144 mm) from combustible materials or
structures or is shielded by a fire barrier complying with
paragraph (D)(3)(b)(i)(a) (6004.3.2.1.1)
of this rule.
(b)
Filling or
dispensing connections shall be provided with a means of local exhaust. Such
exhaust shall be designed to capture fumes and vapors. The exhaust shall be
directed to a treatment system in accordance with paragraph
(D)(2)(b)(vii)(6004.2.2.7) of this rule.
(c)
Stationary tanks
shall be provided with a means of excess flow control on all tank inlet or
outlet connections.
Exceptions:
1.
Inlet connections
designed to prevent backflow.
2.
Pressure relief
devices.
(vi)
6004.2.2.6
Gas rooms. Gas rooms shall comply with paragraph
(C)(8)(d)(5003.8.4) of rule
1301:7-7-50
of the Administrative Code and both of the following
requirements:
(a)
The exhaust ventilation from gas rooms shall be
directed to an exhaust system.
(b)
Gas rooms shall
be equipped with an approved automatic sprinkler system. Alternative
fire-extinguishing systems shall not be used.
(vii)
6004.2.2.7 Treatment systems. The exhaust
ventilation from gas cabinets, exhausted enclosures and gas rooms, and local
exhaust systems required in paragraphs
(D)(2)(b)(iv)(6004.2.2.4) and (D)(2)(b)(v)(6004.2.2.5) of this
rule shall be directed to a treatment system. The treatment system
shall be utilized to handle the accidental release of gas and to process
exhaust ventilation. The treatment system shall be designed in accordance with
paragraphs (D)(2)(b)(vii)(a) (6004.2.2.7.1)
to (D)(2)(b)(vii)(e) (6004.2.2.7.5)
of this rule and section 510 of the mechanical code as
listed in rule
1301:7-7-80
of the Administrative Code.
Exceptions:
1.
Highly toxic and
toxic gases-storage. A treatment system is not required for cylinders,
containers and tanks in storage where all of the following controls are
provided:
1.1
Valve outlets are equipped with gas-tight outlet plugs or
caps.
1.2
Handwheel-operated valves have handles secured to
prevent movement.
1.3
Approved containment vessels or containment systems are
provided in accordance with paragraph
(D)(2)(b)(iii)(6004.2.2.3) of this rule.
2.
Toxic gases-use. Treatment systems are not required for
toxic gases supplied by cylinders or portable tanks not exceeding 1,700 pounds
(772 kg) water capacity where the following are provided:
2.1
A listed or
approved gas detection system with a sensing interval not exceeding 5
minutes.
2.2
A listed or approved automatic-closing fail-safe valve
located immediately adjacent to cylinder valves. The fail-safe valve shall
close when gas is detected at the permissible exposure limit (PEL) by a gas
detection system monitoring the exhaust system at the point of discharge from
the gas cabinet, exhausted enclosure, ventilated enclosure or gas room. The gas
detection system shall comply with paragraph
(D)(2)(b)(x)(6004.2.2.10) of this rule.
(a)
6004.2.2.7.1 Design.
Treatment systems shall be capable of diluting, adsorbing,
absorbing, containing, neutralizing, burning or otherwise processing the
contents of the largest single vessel of compressed gas. Where a total
containment system is used, the system shall be designed to handle the maximum
anticipated pressure of release to the system when it reaches
equilibrium.
(b)
6004.2.2.7.2 Performance.
Treatment systems shall be designed to reduce the
maximum allowable discharge concentrations of the gas to one-half immediate by
dangerous to life and health (IDLH) at the point of discharge to the
atmosphere. Where more than one gas is emitted to the treatment system, the
treatment system shall be designed to handle the worst-case release based on
the release rate, the quantity and the IDLH for all compressed gases stored or
used.
(c)
6004.2.2.7.3 Sizing.
Treatment systems shall be sized to process the maximum
worst-case release of gas based on the maximum flow rate of release from the
largest vessel utilized. The entire contents of the largest compressed gas
vessel shall be considered.
(d)
6004.2.2.7.4 Stationary tanks.
Stationary tanks shall be labeled with the maximum rate
of release for the compressed gas contained based on valves or fittings that
are inserted directly into the tank. Where multiple valves or fittings are
provided, the maximum flow rate of release for valves or fittings with the
highest flow rate shall be indicated. Where liquefied compressed gases are in
contact with valves or fittings, the liquid flow rate shall be utilized for
computation purposes. Flow rates indicated on the label shall be converted to
cubic feet per minute (cfm/min) (m3/s) of gas at
normal temperature and pressure (NTP).
(e)
6004.2.2.7.5 Portable tanks and cylinders.
The maximum flow rate of release for portable tanks and
cylinders shall be calculated based on the total release from the cylinder or
tank within the time specified in Table 6004.2.2.7.5 of this
rule. Where portable tanks or cylinders are equipped with approved
excess flow or reduced flow valves, the worst-case release shall be determined
by the maximum achievable flow from the valve as determined by the valve
manufacturer or compressed gas supplier. Reduced flow and excess flow valves
shall be permanently marked by the valve manufacturer to indicate the maximum
design flow rate. Such markings shall indicate the flow rate for air under
normal temperature and pressure.
Table 6004.2.2.7.5
Rate of release for cylinders and portable tanks
|
Vessel type |
Nonliquefied (minutes) |
Liquefied (minutes) |
|
Containers |
5 |
30 |
|
Portable tanks |
40 |
240 |
(viii)
6004.2.2.8 Emergency power. Emergency power
shall be provided for the following systems in accordance with
paragraph (D)(604) of rule
1301:7-7-06
of the Administrative Code:
1.
Exhaust ventilation system.
2.
Treatment
system.
3.
Gas detection system.
4.
Smoke detection
system.
5.
Temperature control system.
6.
Fire alarm
system.
7.
Emergency alarm system.
(a)
6004.2.2.8.1 Fail-safe engineered systems.
Emergency power shall not be required for mechanical
exhaust ventilation, treatment systems and temperature control systems where
approved fail-safe engineered systems are installed.
(ix)
6004.2.2.9 Automatic fire detection system-highly
toxic compressed gases. An approved automatic fire detection system
shall be installed in rooms or areas where highly toxic compressed gases are
stored or used. Activation of the detection system shall sound a local alarm.
The fire detection system shall comply with paragraph (G)(907)
of rule
1301:7-7-09
of the Administrative Code.
(x)
6004.2.2.10
Gas detection system.A gas detection system shall be provided to detect
the presence of gas at or below the PEL or ceiling limit of the gas for which
detection is provided. The system shall be capable of monitoring the discharge
from the treatment system at or below one-half the IDLH limit.
Exception: A gas detection system is not required for toxic gases when the physiological warning threshold level for the gas is at a level below the accepted PEL for the gas.
(a)
6004.2.2.10.1 Gas detection system components.
Gas detection system control units shall be listed and
labeled in accordance with UL 864 or UL 2017 as listed in rule
1301:7-7-80
of the Administrative Code, or approved. Gas detectors shall be listed
and labeled in accordance with UL 2075 as listed in rule
1301:7-7-80
of the Administrative Code for use with the gases and vapors being
detected, or approved.
(b)
6004.2.2.10.2 Alarms.
The gas detection system shall initiate a local alarm
and transmit a signal to a constantly attended control station when a
short-term hazard condition is detected. The alarm shall be both visual and
audible and shall provide warning both inside and outside the area where gas is
detected. The audible alarm shall be distinct from all other alarms.
Exception: Signal transmission to a constantly attended control station is not required where not more than one cylinder of highly toxic or toxic gas is stored.
(c)
6004.2.2.10.3 Shut off of gas supply.
The gas-detection system shall automatically close the
shutoff valve at the source on gas supply piping and tubing related to the
system being monitored for whichever gas is detected.
Exception: Automatic shutdown is not required for reactors utilized for the production of highly toxic or toxic compressed gases where such reactors are:
1.
Operated at pressures less than 15 pounds per square
inch gauge (psig) ( 103.4 kPa).
2.
Constantly
attended.
3.
Provided with readily accessible emergency shutoff
valves.
(d)
6004.2.2.10.4 Valve closure.
Automatic closure of shutoff valves shall be in
accordance with the following:
(i)
Where the gas-detection sampling point initiating the
gas detection system alarm is within a gas cabinet or exhausted enclosure, the
shutoff valve in the gas cabinet or exhausted enclosure for the specific gas
detected shall automatically close.
(ii)
Where the
gas-detection sampling point initiating the gas detection system alarm is
within a gas room and compressed gas containers are not in gas cabinets or
exhausted enclosures, the shutoff valves on all gas lines for the specific gas
detected shall automatically close.
(iii)
Where the
gas-detection sampling point initiating the gas detection system alarm is
within a piping distribution manifold enclosure, the shutoff valve for the
compressed container of specific gas detected supplying the manifold shall
automatically close.
Exception: Where the gas-detection sampling point initiating the gas-detection system alarm is at a use location or within a gas valve enclosure of a branch line downstream of a piping distribution manifold, the shutoff valve in the gas valve enclosure for the branch line located in the piping distribution manifold enclosure shall automatically close.
(3)
6004.3
Outdoor storage and use. The outdoor storage and use of highly toxic and
toxic compressed gases shall be in accordance with paragraphs
(D)(3)(a)(6004.3.1) to (D)(3)(d)(6004.3.4) of this
rule.
(a)
6004.3.1 Applicability. The applicability
of regulations governing the outdoor storage and use of highly toxic and toxic
compressed gases shall be as set forth in paragraphs
(D)(3)(a)(i)(6004.3.1.1) to (D)(3)(a)(iii)(6004.3.1.3)
of this rule.
(i)
6004.3.1.1 Quantities not exceeding the maximum
allowable quantity per control area. The outdoor storage or use of
highly toxic and toxic gases in amounts not exceeding the maximum allowable
quantity per control area set forth in Table 5003.1.1(4) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(5001) and (C)(5003) of rule
1301:7-7-50
of the Administrative Code and paragraph
(A)(6001) of this rule.
(ii)
6004.3.1.2 Quantities exceeding the maximum allowable quantity per
control area. The outdoor storage or use of highly toxic and toxic gases
in amounts exceeding the maximum allowable quantity per control area set forth
in Table 5003.1.1(4) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with
paragraphs (A)(6001) and (D)(3)( 6004.3) of this
rule and rule
1301:7-7-50
of the Administrative Code.
(iii)
6004.3.1.3 Ozone gas generators. The outdoor use of ozone
gas-generating equipment shall be in accordance with paragraph
(E)(6005) of this rule.
(b)
6004.3.2
General outdoor requirements.
The general
requirements applicable to the outdoor storage and use of highly toxic and
toxic compressed gases shall be in accordance with paragraphs
(D)(3)(b)(i)(6004.3.2.1) to (D)(3)(b)(iv)(6004.3.2.4)
of this rule .
(i)
6004.3.2.1 Location. Outdoor storage or
use of highly toxic or toxic compressed gases shall be located in accordance
with paragraphs (D)(3)(b)(i)(a)
(6004.3.2.1.1) to (D)(3)(b)(i)(c)
(6004.3.2.1.3) of this rule .
Exception: Compressed gases located in gas cabinets complying with paragraph (C)(8)(f)(5003.8.6) of rule 1301:7-7-50 of the Administrative Code and paragraph (D)(1)(b)(6004.1.2) of this rule and located 5 feet (1524 mm) or more from buildings and 25 feet (7620 mm) or more from an exit discharge.
(a)
6004.3.2.1.1 Distance limitation to exposures.
Outdoor storage or use of highly toxic or toxic
compressed gases shall not be located within 75 feet (22 860 mm) of a lot line,
public street, public alley, public way, exit discharge or building not
associated with the manufacture or distribution of such gases, unless all of
the following conditions are met:
(i)
Storage is shielded by a 2-hour fire barrier that
interrupts the line of sight between the storage and the
exposure.
(ii)
The 2-hour fire barrier shall be located not less than
5 feet (1524 mm) from any exposure.
(iii)
The 2-hour fire
barrier shall not have more than two sides at approximately 90-degree (1.57 rad) directions, or three
sides with connecting angles of approximately 135 degrees ( 2.36
rad).
(b)
6004.3.2.1.2 Openings in exposed
buildings.
Where the storage or use area
is located closer than 75 feet (22 860 mm) to a building not associated with
the manufacture or distribution of highly toxic or toxic compressed gases,
openings into a building other than for piping are not allowed above the height
of the top of the 2-hour fire barrier or within 50 feet (15 240 mm)
horizontally from the storage area whether or not shielded by a fire
barrier.
(c)
6004.3.2.1.3 Air intakes.
The storage or use area shall not be located within 75
feet (22 860 mm) of air intakes.
(ii)
6004.3.2.2 Leaking cylinders and tanks. The requirements of
paragraph (D)(2)(b)(iii)(6004.2.2.3) of this
rule shall apply to outdoor cylinders and tanks. Gas cabinets and
exhausted enclosures shall be located within or immediately adjacent to outdoor
storage or use areas.
(iii)
6004.3.2.3 Local exhaust for portable tanks.
Local exhaust for outdoor portable tanks shall be provided in accordance
with the requirements set forth in paragraph
(D)(2)(b)(iv)(6004.2.2.4) of this rule.
(iv)
6004.3.2.4
Piping and controls-stationary tanks. Piping and controls for outdoor
stationary tanks shall be in accordance with the requirements set forth in
paragraph (D)(2)(b)(v)(6004.2.2.5) of this
rule.
(c)
6004.3.3 Outdoor storage weather protection for
portable tanks and cylinders.
Weather
protection in accordance with paragraph (D)(13)( 5004.13)
of rule
1301:7-7-50
of the Administrative Code shall be provided for portable tanks and
cylinders located outdoors and not within gas cabinets or exhausted enclosures.
The storage area shall be equipped with an approved automatic sprinkler system
in accordance with paragraph ( C)(3)(
a)(i)(903.3.1.1) of rule
1301:7-7-09
of the Administrative Code.
Exception: An automatic sprinkler system is not required when:
1.
All materials under the weather protection structure,
including hazardous materials and the containers in which they are stored, are
noncombustible.
2.
The weather protection structure is located not less
than 30 feet (9144 mm) from combustible materials or structures or is separated
from such materials or structures using a fire barrier complying with
paragraph (D)(3)(b)(i)(a) (6004.3.2.1.1)
of this rule.
(d)
6004.3.4
Outdoor use of cylinders, containers and portable tanks. Cylinders,
containers and portable tanks in outdoor use shall be located in gas cabinets
or exhausted enclosures and shall comply with paragraphs
(D)(3)(d)(i)(6004.3.4.1) to (D)(3)(d)(iii)(6004.3.4.3)
of this rule.
(i)
6004.3.4.1 Treatment systems. The
treatment system requirements set forth in paragraph
(D)(2)(b)(vii)(6004.2.2.7) of this rule shall apply to highly
toxic or toxic gases located outdoors.
(ii)
6004.3.4.2
Emergency power. The requirements for emergency power set forth in
paragraph (D)(2)(b)(viii)(6004.2.2.8) of this
rule shall apply to highly toxic or toxic gases located
outdoors.
(iii)
6004.3.4.3 Gas detection system. The gas
detection system requirements set forth in paragraph
(D)(2)(b)(x)(6004.2.2.10) of this rule shall apply to highly
toxic or toxic gases located outdoors.
(E) Section 6005 Ozone gas generators
(1)
6005.1
Scope.
Ozone gas generators having a
maximum ozone-generating capacity of 0.5 pound ( 0.23 kg) or more over a
24-hour period shall be in accordance with paragraphs (E)(2)(
6005.2) to (E)(6)( 6005.6) of this
rule.
Exceptions:
1.
Ozone-generating
equipment used in Group R-3 occupancies.
2.
Ozone-generating
equipment where used in Group H-5 occupancies where in compliance with
rule 1301:7-7-27 and rule
1301:7-7-50
of the Administrative Code and the other provisions in rule
1301:7-7-60 of the Administrative Code for highly toxic
gases.
(2)
6005.2 Design.
Ozone gas generators shall be designed, fabricated and
tested in accordance with NEMA 250 as listed in rule
1301:7-7-80
of the Administrative Code.
(3)
6005.3
Location.
Ozone generators shall be
located in approved cabinets or ozone generator rooms in accordance with
paragraph (E)(3)(a)(6005.3.1) or (E)(3)(b)(6005.3.2)
of this rule.
Exception: An ozone gas generator within an approved pressure vessel where located outside of buildings.
(a)
6005.3.1
Cabinets. Ozone cabinets shall be constructed of approved materials and
compatible with ozone. Cabinets shall display an approved sign stating: "OZONE
GAS GENERATOR-HIGHLY TOXIC-OXIDIZER."
Cabinets shall be braced for seismic activity in accordance with the building code as listed in rule 1301:7-7-80 of the Administrative Code.
Cabinets shall be mechanically ventilated in accordance with the mechanical code as listed in rule 1301:7-7-80 of the Administrative Code with not less than six air changes per hour.
The average velocity of ventilation at makeup air openings with cabinet doors closed shall not be less than 200 feet per minute (1.02 m/s).
(b)
6005.3.2 Ozone gas generator rooms. Ozone
gas generator rooms shall be mechanically ventilated in accordance with the
mechanical code as listed in rule
1301:7-7-80
of the Administrative Code with not less than six air changes per
hour. Ozone gas generator rooms shall be equipped with a continuous gas
detection system that will shut off the generator and sound a local alarm when
concentrations above the permissible exposure limit occur.
Ozone gas-generator rooms shall not be normally occupied, and such rooms shall be kept free of combustible and hazardous material storage. Room access doors shall display an approved sign stating: "OZONE GAS GENERATOR-HIGHLY TOXIC-OXIDIZER."
(4)
6005.4 Piping, valves and fittings.
Piping, valves, fittings and related components used to
convey ozone shall be in accordance with paragraphs
(E)(4)(a)(6005.4.1) to (E)(4)(c)(6005.4.3) of this
rule.
(a)
6005.4.1 Piping.
Piping
shall be welded stainless steel piping or tubing.
Exceptions:
1.
Double-walled
piping.
2.
Piping, valves, fittings and related components located
in exhausted enclosures.
(b)
6005.4.2
Materials.
Materials shall be compatible
with ozone and shall be rated for the design operating
pressures.
(c)
6005.4.3 Identification.
Piping shall be identified with the following: "OZONE
GAS-HIGHLY TOXIC-OXIDIZER."
(5)
6005.5
Automatic shutdown.
Ozone gas generators
shall be designed to shut down automatically under the following
conditions:
(a)
When the dissolved ozone concentration in the water being treated is above
saturation when measured at the point where the water is exposed to the
atmosphere.
(b)
When the process using generated ozone is shut
down.
(c)
When the gas detection system detects
ozone.
(d)
Failure of the ventilation system for the cabinet or
ozone-generator room.
(e)
Failure of the gas-detection system.
(6)
6005.6 Manual shutdown.
Manual shutdown controls shall be provided at the generator
and, where in a room, within 10 feet (3048 mm) of the main exit or exit access
door.
Replaces: 1301:7-7-60
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