The International Building Code 2021 Edition
(IBC), Chapters 1 - 12, 14 - 28, and 30 - 35, and Appendix C are
adopted by reference to regulate all occupancies and buildings, except that the
IBC is revised by deleting all the references to "ICC
Electrical Code" or "NFPA 70" and replacing those
references with "Electrical Code as adopted by
8
AAC 70.025, as amended from time to time" and the
IBC is revised by deleting all the references to
"International Fuel Gas Code", with the exception of Chapter 3
Section 304 and Chapters 6 and 7, deleting all the references to
"International Plumbing Code" and replacing the references to
"International Fuel Gas Code" and "International
Plumbing Code" with "Plumbing Code as adopted by
8
AAC 63.010, as amended from time to time".
Additionally the IBC is changed with the following
revisions:
(1) Chapter 1 of the
IBC is revised by deleting Sections 104.4.4, 101.4.6, 103,
104.4, 104.6, 104.8, 105.4, 106, 107.5, 109.2, 109.4, 109.5, and 110 - 115; and
is revised by deleting the references to the "International Energy
Conservation Code (IECC)", "International Property Maintenance Code (IPMC)",
"International Private Sewage Disposal Code (IPSDC)", "International
Residential Code (IRC)" and "International Wildland-Urban
Interface Code (IWUIC)";
(2) in Chapter 1, Section 101.2 (Scope) of
the
IBC, the last sentence of the paragraph is revised by
adding "as governed by the provisions of
AS
18.70.080": and the exception is revised to
read as follows;
"Exceptions;
1.
Detached one-, two-, and three-family dwellings.
2. Multiple single-family dwellings
(townhouses) not more than three stories above grade plane in height with a
separate means of egress and their accessory structures. These structures shall
be plan reviewed to the IBC. Fire walls between townhouses may
be designed to meet Section 706 of the IBC or by two one-hour
fire resistance-rated wall assemblies tested in accordance with Section 703.2.2
of the IBC.";
(3) Chapter 1, Section 104.2 (Applications
and permits) of the IBC, is revised by deleting the words "and
permits" from the heading, and the section is revised to read: "The building
official shall receive applications and review construction documents for the
on-site erection, alteration, demolition, and moving of buildings and
structures and, at the agency's discretion, will inspect the premises to
enforce compliance with the provisions of this code. Plans for construction
occurring out of state or manufactured off site must be sealed by a registered
design professional of this state and of appropriate discipline in accordance
with AS 08.48 to have a plan review completed before the construction being
placed on its foundation and all plan review deficiencies must be corrected
before occupancy of the facility.";
(4) Chapter 1, Section 105 (Permits) of the
IBC, is revised by deleting the heading and replacing it with
"Application for Plan Review";
(5)
Chapter 1, Section 105 (Permits) of the IBC, is revised by
replacing the word "permit" wherever it occurs with the words "plan
review";
(6) Chapter 1, Section
105.2 (Work exempt from permit) of the IBC, Item 2 is revised
to read: "2. Fences.", and Section 105.2 is also revised by adding a new Item
14 to read: "14. Buildings classified as a Group U Occupancy, other than those
in Appendix LL, that are not offered for use by persons other than the property
owner or the owner's employees, not open to the public, and not containing
hazardous materials in excess of those found in Tables 307.1(1) and 307.1(2).
This exemption includes buildings in which the public has no access, such as
farm, dairy operations, or greenhouse operations.";
(7) in Chapter 1, Section 105.3 (Application
for permit) of the IBC, the first sentence is revised to read:
"To obtain a plan review approval, the applicant must first file an application
in writing on a form furnished for that purpose by the code enforcement
agency.";
(8) Chapter 1, Section
107 (Submittal documents) of the IBC, is revised by replacing
the word "permit" wherever it occurs, with the words "plan review";
(9) Chapter 1, Section 107.2.2 (Fire
protection system shop drawings) of the
IBC, is revised by
adding the sentences 'Shop drawings shall be sealed by a registered design
professional of this state and of appropriate discipline in accordance with AS
08.48, or shall be signed and dated by a fire systems permit holder under
AS
18.70.090 and
13 AAC 50.035. At least two sets
of shop drawings shall be submitted. The building official shall retain one
set, and one approved set stamped by the building official shall be retained on
site during the installation of the system." at the end of the
section;
(10) Chapter 1,
Section107.3.1 (Approval of construction documents) of the
IBC, is revised to read: "One set of bound or one electronic set of
construction documents so reviewed shall be retained by the building
official.";
(11) Chapter 1, Section
109 (Fees) of the IBC, is revised by replacing the word
"permit" wherever it occurs, with the words "plan review";
(12) Chapter 1, Section 109.3 (Building
permit valuation) of the
IBC, is revised to read: "Building
plan review valuations. The applicant for a plan review involving an addition
to an existing structure, a remodel of an existing structure, or a fuel system
shall provide an estimated building construction value at the time of
application. The valuation shall include the total value of work, including
materials and labor for which the plan review is being issued. The total value
of work must include the electrical, gas, mechanical, and plumbing equipment
and permanent systems, including fire protection systems. If, in the opinion of
the building official, the valuation is underestimated on the application, the
building official shall deny the plan review, unless the applicant can show
detailed estimates that meet the approval of the building official. The
building official shall set the final building construction valuation.
The valuation for all new construction not involving remodel
work or additions to existing structures must be based on the valuation
schedule established in
13 AAC 50.027.";
(13) Chapter 2, Section 202 of the
IBC, is revised by adding a definition to read: "EXISTING
BUILDING (EXISTING CONSTRUCTION OR EXISTING STRUCTURE). Any building or
structure
(A) for which the start of
construction commenced before the earlier of
(i) the effective date of the community's
first code, ordinance. or standard; or
(ii) December 5, 1956; or
(B) that received a legal building review.
The certificate of fire and life safety or plan review number shall be
provided."
(14) Chapter
2, Section 202 of the
IBC, is revised by adding a definition
to read: "NONCOMPLIANT OR UN-REVIEWED EXISTING BUILDING. Any building or
structure for which the start of construction commenced without a legal plan
review after the earlier of
(A) the effective
date of the community's first code, ordinance, or standard; or
(B) December 5, 1956.";
(15) Chapter 2, Section 202 of the
IBC, is revised by adding a definition to read; "RELOCATABLE
CAMPS. A camp that is disassembled and loaded on a trailer to relocate or a
camp that is on a skid or wheels as a single unit and pulled by a vehicle
without separating.";
(16) Chapter
3, Section 305 (Educational group E) of the
IBC, is revised by
adding a new Section 305.2.4 to read: "305.2.4 Family child care homes. Family
child care homes occupied as their primary residence (Group R-3) operating
between the hours of 6:00 a.m. and 10:00 p.m. may accommodate a total of 12
children of any age without conforming to the requirements for Group E
occupancy, except for fire extinguishers as required by Section 906. smoke
alarms as required by Section 907.2.11.2, carbon monoxide alarms as required by
Section 908, means of egress requirements of Section 1003, and emergency escape
and rescue openings, as required by Section 1029, in napping or sleeping rooms,
and fire extinguisher requirements as described in the
International
Fire Code (IFC), as adopted by reference in
13 AAC 50.025, including children
related to the staff All stories that are not at grade plane shall have access
to two exits.";
(17) Chapter 3,
Section 305 (Educational group E) of the IBC, is revised by
adding a new Section 305.4 to read: "305.4 Combination shops. Shop classrooms
that combine wood working with any other fabrication using flame or causing
spark shall be considered an F-1 occupancy and must be separated from the E
occupancy in accordance with Table 602.";
(18) Chapter 4, Section 412.3.1 (Exterior
walls) of the IBC, is revised by deleting "30 feet (9144 mm)"
and replacing it with "20 feet (6,098 mm)";
(19) Chapter 4 (Special detailed requirements
based on use and occupancy) of the
IBC is revised by adding
new Sections 429 (Special security requirements for elevated buildings) to
read:
SECTION 429
SPECIAL SECURITY REQUIREMENTS FOR ELEVATED BUILDINGS
429.1 All elevated buildings with the lower floor level above
grade and open on the sides must be fenced around the building exterior or have
skirting below the exterior walls to prevent unauthorized access, if a building
is higher than two foot to the underside of floor framing.
Exceptions:
1.
Normally unoccupied buildings;
2.
Buildings of F, H, S, and U occupancies;
3. All occupancies within an industrial area
that is secured and there is no public access.
(20) Chapter 5, Section 501 (General) of the
IBC, is revised by adding a new Section 501.2 to read: "501.2
Location on property. Buildings must adjoin or have access to a permanent
public way or yard on not less than one side. Required yards by this section
must be permanently maintained.";
(21) Chapter 5, Table 509.1 (Incidental uses
) of the IBC, is revised by changing the wording in the first
block under the left column to read: "Furnace rooms in Group E, I, and R-1,
R-2, R-3, and R-4 occupancies regardless of Btu input, and furnace rooms of all
other occupancies where the largest piece of equipment is over 400, 000 Btu per
hour input";
(22) Chapter 7,
Section 706.6 of the
IBC, is revised by adding a paragraph
before the exceptions to read: "If buildings are constructed on pilings, the
first floor is above ground, and the area below is completely open to the
outside (not affected by skirting), a fire wall may terminate at the first
floor level if it complies with the following:
1. The wall must terminate on a structural
support that extends completely the length of the wall.
2. The structural support must rest upon and
be completely supported by pilings.
3. The rest of the fire wall must comply with
IBC Section 706.2.
4. If there is concealed space between the
structural supports that are directly supported by piles, the concealed space
must have the same fire wall protection rating for the depth of the concealed
space.";
(23) Chapter 7,
Section 718.4.2 (Groups R-1 and R-2) Exception 3 of the IBC,
is revised by adding a new sentence at the end of the exception to read: "
Adequate cross ventilation must be provided in accordance with
Section1202.2.1.";
(24) Chapter 9,
Section 901.5 (Acceptance tests) of the IBC, is revised
by-adding a new sentence at the end of the paragraph to read: "Within 30 days
after the completion of the installation, a copy of the acceptance test
certificate must be forwarded by the firm conducting the test to the division
of fire and life safety' or the deferred authority having
jurisdiction.";
(25) Chapter 9,
Section 903.2.3 (Group E) of the
IBC, is revised to read:
"Group E. An automatic sprinkler system must be provided throughout all
buildings with Group E occupancies. The use of a fire wall or barrier does not
establish a separate building or fire area for purposes of this section.
As determined by the building official, an automatic
fire-extinguishing system approved under Section 904 shall be installed in a
Group E occupancy in accordance with Section 903.2.3 whenever alterations or
additions are made to an existing structure containing a Group E
occupancy.
Exception: Buildings with Group E occupancies having an
occupant load of 50 or less.
An automatic sprinkler system must also be provided for every
portion of educational buildings below the level of exit discharge.
Family child care homes that are licensed to care for more
than five persons between the hours of 10:00 p.m. and 6:00 a.m. must be
equipped with an automatic sprinkler system designed and installed as described
in Section 903.3.1.3 or an equivalent system approved by the building
official.";
(26) Chapter 9,
Section 903.2.8 (Group R) of the
IBC, is revised to read:
"903.2.8 Group R. An automatic sprinkler system installed in accordance with
Section 903.3 shall be provided throughout buildings containing Group R
occupancies as provided in this section.
903.2.8.1 Group R-1. An automatic sprinkler system shall be
provided throughout all buildings that contain an R-1 occupancy.
903.2.8.2 Group R-2. An automatic sprinkler system shall be
provided throughout all buildings that contain an R-2 occupancy.
Exceptions:
1.
Buildings that are no more than two stories in height, including basements and
contain four or fewer dwelling units.
2. Buildings that are no more than two
stories in height. including basements and contain 16 or fewer sleeping rooms.
For the purpose of this section, fire walls may be used to
create up to three separate attached buildings. Any additional buildings must
be physically separated in accordance with IBC Table
602.
903.2.8.3 Group R-4. A 13R automatic sprinkler system shall
be provided throughout all buildings that contain an R-4
occupancy.";
(27)
Chapter 9, Section 903.3.6 (Hose threads) of the IBC, is
revised by deleting "the fire code official" and replacing it with "AS
18.70.084";
(28) Chapter 9, Section
904.1 (General) of the IBC, is revised by adding a new
sentence at the end of the paragraph to read: "Within 30 days after the
completion of the installation, a copy of the acceptance test certificate must
be forwarded by the firm conducting the test to the division of fire and life
safety or the deferred authority having jurisdiction.";
(29) Chapter 9, Section 906.1 (Where
required) of the IBC, is revised by deleting the exception in
item 1;
(30) Chapter 9,
Section907.2.3 (Group E) of the IBC, Exception 1 is revised by
replacing "50" with "49";
(31)
Chapter 9, Section 907.2.3 (Group E) of the IBC, is revised by
adding a second paragraph after the exceptions to read: "Rooms used for
sleeping or napping purposes within a day care use of a Group E occupancy must
be provided with smoke alarms that comply with Section 907.2.11.2.";
(32) Chapter 9, Section 907.2.9 (Group R-2)
of the IBC, is revised by adding a new Section
907.2.9.4 to read: "907.2.9.4 Remote camps. Any camp that is
located outside a fire department service area shall be equipped with an
automatic smoke or fire detection system that activates the occupant
notification system in accordance with Section 907.5 throughout buildings that
are used for sleeping purposes.";
(33) Chapter 9, Section 907.2.11.5
(lnterconnection) of the IBC, is revised by adding a new
paragraph to read: "If more than 12 smoke alarms are interconnected the
interconnecting means must be supervised in accordance with
NFPA 72.";
(34)
Chapter 9, Section 907.7.2 (Record of completion) of the IBC,
is revised by adding a new sentence to read: "Within 30 days after completion
of the installation, a copy of the acceptance test certificate verifying
completion in accordance with NFPA 72 must be forwarded by the
firm conducting the test to the division of fire and life safety or the
deferred authority having jurisdiction.";
(35) Chapter 9, Section 907.8 (Inspection,
testing and maintenance) of the
IBC, is revised by adding a
new Section 907.8.1 to read: "907.8.1 camp relocations. On each portable or
relocatable camp move, an electrician certified under AS 18.62 may disconnect
and reconnect the fire alarm system. The camp must be certified by an
appropriate fire system permit holder under
AS
18.70.090 and
13 AAC 50.035 to provide
documentation that the system has been placed back in service and is ready for
operation. System certification documentation is to be retained on site and
available for review upon request. Annual requirements are still required under
the code as adopted by reference in
13 AAC 50.025.";
(36) Chapter 9, Section 909.18 (Acceptance
testing) of the IBC, is revised by adding a new sentence at
the end of the paragraph to read: "Within 30 days after the completion of the
installation a copy of the acceptance test certificate must be forwarded by the
firm conducting the test to the division of fire and life safety or the
deferred authority having jurisdiction.";
(37) Chapter 10, Table 1020.2 (Corridor
fire-resistance rating) of the
IBC, is revised by inserting a
superscript "e" footnote reference after "R" in the "occupancy" column and is
revised by adding footnote "e" to read: "R occupancies with an occupant load
greater than 10 shall have one-hour rated corridors when the R occupancies are
allowed to not have a sprinkler system and
1.
serve four or fewer dwelling units or 16 or fewer sleeping rooms; and
2. are not more than two
stories.";
(38) Chapter
10, Section 1031.2 (Where required) of the IBC, is revised by
replacing the first sentence to read: "In addition to the means of egress
required by this chapter provisions shall be made for emergency escape and
rescue openings in Group R and I-1 occupancies.";
(39) Chapter 10, Section 1031.2 (Where
required) of the IBC, is revised by deleting Exceptions 1 and
3;
(40) Chapter 11, Section 1101.1
(Scope) of the IBC, is revised to read: Compliance with the
requirements of this chapter and other provisions within this code for
accessibility of persons with disabilities is the exclusive responsibility of
the owner of the structure or design professional of record.";
(41) Chapter 16, Section 1601.1 (Scope) of
the
IBC, is revised by adding a second paragraph to read;
"This chapter is adopted as design criteria for the structural safety of
buildings constructed under this code. The division of fire and life safety
does not perform review for conformance with these criteria. Compliance with
the requirements of this chapter, other provisions in this code for structural
design, local government flood reduction ordinances, and federal oversight and
authority through the Federal Emergency Management Agency (FEMA) National Flood
Insurance Program (NFIP) under 44 C.F.R. Parts
59 and
60 is the exclusive
responsibility of the building owner or design professional of record.
Information regarding the National Flood Insurance Program is available from
the Department of Commerce, Community, and Economic Development, division of
community and regional affairs at
https://www.commerce.alaska.goy/web/dcra/PlanningLandManagement/FloodplainlVlaDagement.aspx.
Information on approaches and grants for mitigating natural hazards in
construction, including seismic hazards, is available through the Department of
Military and Veterans' Affairs, division of homeland security and emergency
management at
http://www.ready.alaska.gov.";
(42) Chapter 17, Section 1701.1 (Scope) of
the IBC, is revised by adding a second paragraph to read: "The
provisions of this chapter are adopted as criteria to guide the owner and the
registered design professional in meeting the tests and special inspections
necessary to assure conformance with the applicable standards adopted under
this code. Tests and inspections required by this code are not performed by the
division of fire and life safety, but are the responsibility of the building
owner or design professional of record. The findings of these tests and
inspections must be kept for the life of the building.";
(43) Chapter 27, Section 2701.1 (Scope) of
the IBC, is revised by adding a new sentence at the end of the
section to read: "Electrical weather heads must be installed on the gable ends
when a metal roof is installed.";
(44) in Chapter 31, Section 3103.1 (Temporary
structures: General) of the
IBC, the first sentence is revised
to read: "The provisions of this section apply in deferred jurisdictions as
allowed under
13 AAC 50.075 only, for structures
other than tents and membrane structures, erected for a period of less than 180
days.";
(45) Chapter 31, Section
3103.2 (Construction documents) of the IBC, is revised by
adding a second sentence to read: "Structures of less than 300 square feet in
floor area that are designed for the specific purpose of providing an enclosure
for non-hazardous equipment, and not containing hazardous materials in excess
of those found in Tables 307.1(1) and 307.1(2) are not required to be sealed by
a registered design professional.";
(46) Chapter 31 of the IBC
is revised by deleting Section 3107 (Signs)
(47) the appendices of the
IBC are revised by adding, after Appendix L and before
Appendix M, Appendix LL to read:
"APPENDIX LL OIL AND GAS INDUSTRIAL PROCESSING
BUILDINGS
LL101 General. These provisions have been established to
provide engineering methods for the design and construction of hydrocarbon
processing buildings in this state.
LL102 Scope. These standards augment and are used in
conjunction with the respective requirements of the 2021
International Building Code (IBC), International Mechanical Code (IMC),
International Fire Code (IFC), and International Fuel Gas Code
(IFGC) as the minimum requirements for occupancies (F, H, S, and U)
when designing and constructing hydrocarbon (facilities that are directly
connected with the transport or processing of oil and gas or by-products)
buildings in this state. These standards apply to industrial occupancies
attached to H-2 buildings such as the following: control rooms, offices, break
rooms, warehouses, generator enclosures, vehicle storage, and others as
approved by the authority having jurisdiction.
LL102.1 Small unoccupied remote dedicated structures,
shelters, and enclosures, such as a wellhead shelter (any item that is put over
the top of the wellhead that totally encloses the wellhead), communications
shelters (unoccupied buildings with no hazardous vapors, gases, or products
open to the atmosphere within the structures and that are utilized solely for
the housing of wires and their components), pigging enclosures, a meter
building, and shut-down valve enclosures may be classified as a Group U
occupancy if the following conditions are met:
1. The building is less than 1, 000 square
feet;
2. The contents of the
building include only meters, valves, or pipe work;
3. The building is not normally occupied more
than once during a 12-hour period;
4. If the building exceeds 300 square feet,
the building has at least two exits;
5. "Remote" means a location that is secured
and has limited or no public access and where no other occupied non-oil and gas
related buildings or structures are located within one half mile of a flare or
emergency process safety blow down exhaust termination;
6. "Dedicated" means housing only equipment
associated with a single activity such as metering or pigging.
LL102.2 Structures that meet the requirements of Section
LL102.1 shall neither require conformance with IBC Section
1604.4 nor a professional engineer's registration number or seal on plans if
all of the following conditions exist:
1. The building is less than 300 square
feet;
2. The building is
pre-manufactured;
3. The
pre-manufactured building is based on the manufacturer's experience or the
building has been load tested for the site location conditions.
LL102.3 Factory fabricated structures of less than 400 square
feet in area, singularly or aggregate, that are designed for the specific
purpose of providing an enclosure for non-hazardous equipment and not
containing hazardous materials in excess of those found in IBC
Tables 307.1(1) and 307.1(2) are exempt from plan review in accordance with
IBC Section 105.2. Any structure shall not be occupied for any
reason other than maintenance and service of equipment housed within the
structure.
LL103 Hydrocarbon processing buildings are considered special
industrial occupancies as defined in IBC
Section503.1.1.
LL103.1 Module separation. Elevated pipe ways extending from
a building need not be considered projections of the building.
LL103.1.1 Building extensions and service area platforms.
Building extensions of hydrocarbon processing buildings into the yard include
landings, platforms, stairs, vessels, vessel enclosures, tanks, and exhaust or
intake hoods. Clear and unobstructed access for fire fighting is to be no less
than 40 feet. Bridging between buildings must be designed to allow access and
operation for fire fighting.
LL104 Stairs, landings, handrails, and guardrails. Stairs,
landings, handrails, and guardrails must meet the minimum requirements of 8 AAC
61, as amended as of July 28, 2013 and as amended from time to time; these
regulations supersede the respective requirements of the
IBC.
LL104.1 Landings, floor level at doors. Floors or landings
may be more than one inch lower than the threshold of doorways if an attempt is
made to minimize the drop through the use of ramps at interior doorways as
described in Section 1008.1.6 of the IBC.
LL104.2 Industrial areas that are fenced or guarded and not
open to the public in group B, F, H, R-1, R-2, or S occupancies, balusters,
horizontal intermediate rails, or other construction must not permit a sphere
with a diameter of 21 inches (533 mm) to pass through any opening.
LL105 Construction specifics. The construction of hydrocarbon
processing buildings must comply with Sections LL105.1 - LL105.3 of this
code.
LL 105.1 Fire walls, fire-resistance rated exterior walls,
fire barrier walls, and horizontal assembly continuity. When a fire wall is
used to qualify under Section 705 of the IBC, the wall must
comply with that section. If the fire wall, fire-resistance rated exterior
wall, or fire barrier wall does not extend to the ground, the structural
supports for the wall must rest upon and be completely supported by the
pilings. If a horizontal assembly is not supported by the ground, it must rest
upon and be completely supported by the pilings.
LL105.2 Tank support fireproofing. Fire proofing requirements
for steel tank supports, as described in Section 5704.2.9.2.3 of the
IFC 2021 Edition. as adopted by reference, may be waived by
the authority having jurisdiction when justified, based on the remoteness of
the facility and lack of public access, or analytical or empirical results
indicating that sufficient heat could be transmitted to the permafrost to cause
foundation settlement.
LL 105.2.1 Tank venting and relief requirements for tanks and
pressure vessels storing class IB, class IC, class II, or class III liquids
described in Sections 5704.2.7.3 and 5704.2.7.4 of the IFC 2021
Edition may be satisfied by the use of properly sized open vents
without flame arrestors. When open vents are utilized they shall be configured
to minimize the accumulation of snow and ice. This relief shall only apply to
installation in cold climate locations. In this section, "cold climate
locations" means locations with an American Society of Heating, Refrigerating
and Air-Conditioning Engineers (ASHRAE) 99 percent design heating design
temperature (dry bulb) of less than -25 degrees Fahrenheit. These figures shall
be based on the values published by the American Society of Heating,
Refrigerating and Air-Conditioning Engineers.
LL105.2.2 Bulk transfer and process transfer locations. Bulk
transfer and process transfer operations must be conducted in approved
locations. Tank vehicle transfer facilities shall be separated from buildings
and above-ground tanks by a minimum distance of five feet (1, 524 mm) for Class
I, II, and III liquids measured from the nearest position of any tank loading
valve and meet the following requirements:
1. Adherence to an approved written company
policy for transfer of flammable and combustible liquids;
2. Tank capacity of either the truck or tank
must not exceed 15, 000 gallons;
3.
The tank vehicle shall be located a minimum of 20 feet from tank connections,
and a minimum distance of 25 feet from tank or building during transfer
operations;
4. Tank fill
connections must not be utilized to transfer liquids to tank
vehicles.
LL105.3 Electrical or communication equipment shelters,
wellhead valve shelters, and wellhead shelters. Neither fire separation
distance between adjacent shelters, as described in IBC Table
705.5, nor thermal barrier requirements, as described in Section 2603.4 of the
IBC, for fiberglass or metal sheeting used for construction of
electrical or communication equipment shelters, wellhead valve shelters, and
wellhead shelters are required if the following conditions are met:
1. The area of an individual shelter may not
exceed 1, 000 square feet;
2. Fire
separation distance shall be in accordance with
IBC Table
705.5;
Exceptions:
(a)
Combined fire separation distances between adjacent individual electrical or
communication equipment shelters must be a minimum of six feet;
(b) Fire separation distance is not required
between adjacent individual wellhead valve shelters, individual wellhead
shelters, or a combination of those shelters;
3. Each wellhead shelter shall only enclose
one wellhead;
4. Each wellhead
valve shelter shall serve only one wellhead;
5. The electrical or communication shelter,
wellhead valve shelter, or wellhead shelter must normally be unoccupied. It is
understood that operators need to spend approximately 10 minutes per day taking
readings in wellhead shelters and that maintenance is infrequently required.
The most extensive maintenance is well wireline work. This work may extend to a
week per well and occur once every several years per well. Most of this work is
accomplished from outside the wellhead shelter. All maintenance is strictly
controlled with a permit system.
LL106.1 Fire extinguishing system. An automatic sprinkler
system as specified in IBC Section 903.2.5.1 or alternative
automatic fire extinguishing system need not be provided in Group H-2 occupancy
compressor modules, dehydration modules, metering modules and heater/separator
modules if the following conditions are met:
1. The module under consideration primarily
handles natural gas and its by-products;
2. The module is located within a secured
site with controlled access;
3. The
module is normally unoccupied;
4.
Significant quantities of Class I or Class II liquids are not
present;
5. The aggregate module
area under consideration is less than 1, 500 square feet;
6. Module construction features panelized
type exterior walls that will provide for venting in the event of over
pressurization;
7. Combustible gas
detection is provided;
8. A
mechanical ventilation system capable of providing the following is provided:
i. Minimum four air changes an hour operating
continuously;
ii. Minimum 12 air
changes an hour upon detection of combustible or flammable vapors in excess of
20 percent lower flammable limit (LFL) (lower explosive limit
(LEL));
9. Upon detection
of combustible or flammable vapors in excess of 40 percent LFL (LEL) process
safety management features are automatically initiated to reduce or eliminate
the fuel load;
10. Module location
complies with
IBC Section 705.3.
LL106.2 Alternate automatic fire-extinguishing (AAFE).
Automatic activation for gas detection (inerting or suppression agent) in areas
of hydrocarbon processing buildings where (1) both fire and explosion hazards
exist, (2) both fire and gas detection systems are (interconnected or
independently, or both) installed, (3) the fire and gas detection devices alarm
at a continuously staffed control room and trained operators can quickly
respond to the fire and gas alarms following specific fire and gas alarm
response procedures, and (4) collateral fire damage is likely to be minimal,
the following alternate automatic fire-extinguishing (AAFE) operating
activation mode is acceptable: Automatic activation of the alternate automatic
fire-extinguishing (AAFE) system upon gas detection coupled with manual
activation of the same alternate automatic fire-extinguishing (AAFE) system on
fire detection is approved.
LL106.3 Manual activation of total flooding fire suppression
systems. In areas where (1) the only hazard is fire, not explosion, (2) fire
detection devices alarm at continuously staffed control rooms, (3) trained
operators can quickly respond to the fire alarms following specific fire alarm
response procedures, and (4) collateral fire damage is likely to be minimal,
manual activation of the total flooding fire suppression agent is acceptable.
These areas also include continuously staffed control rooms.
LL106.4 Platform width. In buildings protected with fire
sprinkler systems, any platform that exceeds four feet in width or length is
considered an obstruction for the purposes of the installation of sprinkler
systems under Section 903.3.1.1 of the
IBC.";
(48) the appendices of the
IBC are revised by adding Appendix NN to read :
"APPENDIX NN REPAIRS TO BUILDING AND STRUCTURES DAMAGED BY
THE OCCURRENCE OF A NATURAL DISASTER
NN101 Purpose. The purpose of this appendix is to provide a
defined level of repair for buildings or structures damaged by a natural
disaster in jurisdictions where the governor has declared a formal condition of
disaster emergency under AS 26.23 by proclamation.
NN102 General. Required repair levels must be based on the
ratio of the estimated value of the repairs required to restore the structural
members to their pre-disaster condition to the estimated replacement value of
the building or structure.
NN103 Structural repairs. When the ratio described in Section
NN102 does not exceed 10 percent, as determined by design professionals who are
professional architects or professional engineers who meet the requirements of
AS 08.48, buildings and other structures, except essential facilities included
as Category III buildings and other structures in Table 1604.5 (Risk category
of buildings and other structures) of this code, must, at a minimum, be
restored to their pre-disaster condition. When the ratio described in Section
NN102 is greater than 10 percent but less than 50 percent, buildings and other
structures, except essential facilities included as Category III buildings and
other structures in Table 1604.5 of this code, must have the damaged structural
members, including all critical ties and connections associated with the
damaged structural members, all structural members supported by the damaged
member, and all structural members supporting the damaged members repaired and
strengthened to bring them into compliance with the force levels and connection
requirements of this code. These requirements apply to those essential
facilities when the ratio described in Section NN102 is less than 30
percent.
Exception: For buildings or structures with rigid diaphragms
where the above-required repair and strengthening increases the rigidity of the
resisting members, the entire lateral force-resisting system of the building or
structure must be investigated.
When, in the opinion of the building official, an unsafe or
adverse condition has been created as a result of the increase in rigidity, the
condition must be corrected. When the ratio described in Section NN102 is
greater than 50 percent, buildings and other structures, except essential
facilities included as Category III buildings and other structures in Table
1604.5 of this code, must, at a minimum, have the entire building or other
structure strengthened to comply with the force level and connection
requirements of this code. These requirements apply to essential facilities
when the ratio described in Section NN102 is greater than or equal to 30
percent.
NN104 Nonstructural repairs to light fixtures and suspended
ceilings. Under all ratios calculated under Section NN102, when light fixtures
and the suspension systems of a suspended acoustical ceiling are damaged, the
damaged light fixtures and suspension systems must be repaired to fully comply
with the requirements of Section 803.9 of this code."
Undamaged light fixtures and suspension systems must have the
additional support and bracing that is required in Section 803.10 of this
code.
