RegulusPipeline research

Search Updates Timeline Research Projects Coverage Profile

Menu

Search Updates Timeline Research Projects Coverage Profile

Open research interfaceRegulatory evidence, ready for agents.

Public, read-only access. No account or API key required.

Start herellms.txt InstructionsLLM guide API contractOpenAPI WorkflowAgent skill ConnectMCP setup

Regulus · Pipeline research

About Terms Privacy

Source-first · Read-only · Citation-ready

HAR 6-77-95 - HAR 6-77-95 Inspection of materials | Regulus

Add to project

Projects

No projects yet

Export Official source

Point-in-time view requested for 2026-08-12. Showing the nearest checked snapshot on or before that date: 2026-08-12.Return to current

Regulation documentation

Part

Sections200

HAR 6-77 Appendix AHAR 6-77 Appendix A Incorporated by Reference HAR 6-77 Appendix BHAR 6-77 Appendix B Qualification of Pipe HAR 6-77 Appendix CHAR 6-77 Appendix C Qualification of Welders for Low Stress Level Pipe HAR 6-77 Appendix DHAR 6-77 Appendix D Criteria for Cathodic Protection and Determination of Measurements HAR 6-77-1HAR 6-77-1 Scope of chapter HAR 6-77-2HAR 6-77-2 Definitions HAR 6-77-3HAR 6-77-3 Incorporation by reference HAR 6-77-4HAR 6-77-4 Telephonic notice of certain incidents HAR 6-77-5HAR 6-77-5 Addressee for written reports HAR 6-77-6HAR 6-77-6 Distribution system: incident report HAR 6-77-7HAR 6-77-7 Distribution system: annual report HAR 6-77-8HAR 6-77-8 Distribution systems reporting: transmission pipelines, transmission or HAR 6-77-9HAR 6-77-9 Transmission and gathering systems: incident report HAR 6-77-10HAR 6-77-10 Transmission and gathering systems: annual report HAR 6-77-11HAR 6-77-11 Report forms HAR 6-77-12HAR 6-77-12 Reporting safety-related conditions HAR 6-77-13HAR 6-77-13 Filing safety-related condition reports HAR 6-77-14HAR 6-77-14 Class locations HAR 6-77-15HAR 6-77-15 Gathering lines HAR 6-77-16HAR 6-77-16 Petroleum gas systems HAR 6-77-17HAR 6-77-17 General HAR 6-77-18HAR 6-77-18 Conversion to service subject to this chapter HAR 6-77-19HAR 6-77-19 Scope HAR 6-77-20HAR 6-77-20 General HAR 6-77-21HAR 6-77-21 Steel pipe HAR 6-77-23HAR 6-77-23 Plastic pipe HAR 6-77-25HAR 6-77-25 Marking of materials HAR 6-77-26HAR 6-77-26 Transportation of pipe HAR 6-77-27HAR 6-77-27 Scope HAR 6-77-28HAR 6-77-28 General HAR 6-77-29HAR 6-77-29 Design formula for steel pipe HAR 6-77-30HAR 6-77-30 Yield strength (S) for steel pipe HAR 6-77-31HAR 6-77-31 Nominal wall thickness (t) for steel pipe HAR 6-77-32HAR 6-77-32 Design factor (F) for steel pipe HAR 6-77-33HAR 6-77-33 Longitudinal joint factor (E) for steel pipe HAR 6-77-34HAR 6-77-34 Temperature derating factor (T) for steel pipe HAR 6-77-37HAR 6-77-37 Design of plastic pipe HAR 6-77-38HAR 6-77-38 Design limitations for plastic pipe HAR 6-77-39HAR 6-77-39 Design of copper pipe HAR 6-77-40HAR 6-77-40 Scope HAR 6-77-41HAR 6-77-41 General requirements HAR 6-77-42HAR 6-77-42 Qualifying metallic components HAR 6-77-43HAR 6-77-43 Valves HAR 6-77-44HAR 6-77-44 Flanges and flange accessories HAR 6-77-45HAR 6-77-45 Standard fittings HAR 6-77-46HAR 6-77-46 Tapping HAR 6-77-47HAR 6-77-47 Components fabricated by welding HAR 6-77-48HAR 6-77-48 Welded branch connections HAR 6-77-49HAR 6-77-49 Extruded outlets HAR 6-77-50HAR 6-77-50 Flexibility HAR 6-77-51HAR 6-77-51 Supports and anchors HAR 6-77-52HAR 6-77-52 Compressor stations: design and construction HAR 6-77-53HAR 6-77-53 Compressor stations: liquid removal HAR 6-77-54HAR 6-77-54 Compressor stations: emergency shutdown HAR 6-77-55HAR 6-77-55 Compressor stations: pressure limiting devices HAR 6-77-56HAR 6-77-56 Compressor stations: additional safety equipment HAR 6-77-57HAR 6-77-57 Compressor stations: ventilation HAR 6-77-58HAR 6-77-58 Pipe-type and bottle-type holders HAR 6-77-59HAR 6-77-59 Additional provisions for bottle-type holders HAR 6-77-60HAR 6-77-60 Transmission line valves HAR 6-77-61HAR 6-77-61 Distribution line valves HAR 6-77-62HAR 6-77-62 Vaults: structural design requirements HAR 6-77-63HAR 6-77-63 Vaults: accessibility HAR 6-77-64HAR 6-77-64 Vaults: sealing, venting, and ventilation HAR 6-77-65HAR 6-77-65 Vaults: drainage and waterproofing HAR 6-77-66HAR 6-77-66 Design pressure of plastic fittings HAR 6-77-67HAR 6-77-67 Valve installation in plastic pipe HAR 6-77-68HAR 6-77-68 Protection against accidental overpressuring HAR 6-77-69HAR 6-77-69 Control of the pressure of gas delivered from high-pressure distribution HAR 6-77-70HAR 6-77-70 Requirements for design of pressure relief and limiting devices HAR 6-77-71HAR 6-77-71 Required capacity of pressure relieving and limiting stations HAR 6-77-72HAR 6-77-72 Instrument, control, and sampling pipe and components HAR 6-77-73HAR 6-77-73 Scope HAR 6-77-74HAR 6-77-74 Welding-general HAR 6-77-75HAR 6-77-75 Qualification of welders HAR 6-77-76HAR 6-77-76 Limitations on welders HAR 6-77-77HAR 6-77-77 Protection from weather HAR 6-77-78HAR 6-77-78 Miter joints HAR 6-77-79HAR 6-77-79 Preparation for welding HAR 6-77-80HAR 6-77-80 Inspection and test of welds HAR 6-77-81HAR 6-77-81 Nondestructive testing HAR 6-77-82HAR 6-77-82 Repair or removal of defects HAR 6-77-83HAR 6-77-83 Scope HAR 6-77-84HAR 6-77-84 General HAR 6-77-85HAR 6-77-85 Cast iron pipe HAR 6-77-86HAR 6-77-86 Ductile iron pipe HAR 6-77-87HAR 6-77-87 Copper pipe HAR 6-77-88HAR 6-77-88 Plastic pipe HAR 6-77-89HAR 6-77-89 Plastic pipe; qualifying joining procedures HAR 6-77-90HAR 6-77-90 Plastic pipe; qualifying persons to make joints HAR 6-77-91HAR 6-77-91 Plastic pipe, inspection of joints HAR 6-77-92HAR 6-77-92 Scope HAR 6-77-93HAR 6-77-93 Compliance with specifications or standards HAR 6-77-94HAR 6-77-94 Inspection: general HAR 6-77-95HAR 6-77-95 Inspection of materials HAR 6-77-96HAR 6-77-96 Repair of steel pipe HAR 6-77-97HAR 6-77-97 Repair of plastic pipe HAR 6-77-98HAR 6-77-98 Bends and elbows HAR 6-77-99HAR 6-77-99 Wrinkle bends in steel pipe HAR 6-77-100HAR 6-77-100 Protection from hazards HAR 6-77-101HAR 6-77-101 Installation of pipe in a ditch HAR 6-77-102HAR 6-77-102 Installation of plastic pipe HAR 6-77-103HAR 6-77-103 Casing HAR 6-77-104HAR 6-77-104 Underground clearance HAR 6-77-105HAR 6-77-105 Cover HAR 6-77-106HAR 6-77-106 Scope HAR 6-77-107HAR 6-77-107 Customer meters and regulators: location HAR 6-77-108HAR 6-77-108 Customer meters and regulators: protection from damage HAR 6-77-109HAR 6-77-109 Customer meters and regulators: installation HAR 6-77-110HAR 6-77-110 Customer meter installations: operating pressure HAR 6-77-111HAR 6-77-111 Service lines: installation HAR 6-77-112HAR 6-77-112 Service lines: valve requirements HAR 6-77-113HAR 6-77-113 Service lines: location of valves HAR 6-77-114HAR 6-77-114 Service lines: general requirements for connections to main piping HAR 6-77-115HAR 6-77-115 Service lines: connections to cast iron or ductile iron mains HAR 6-77-116HAR 6-77-116 Service lines: steel HAR 6-77-117HAR 6-77-117 Service lines: cast iron and ductile iron HAR 6-77-118HAR 6-77-118 Service lines: plastic HAR 6-77-119HAR 6-77-119 Service lines: copper HAR 6-77-120HAR 6-77-120 New service lines not in use HAR 6-77-121HAR 6-77-121 Scope HAR 6-77-122HAR 6-77-122 Applicability to converted pipelines HAR 6-77-123HAR 6-77-123 General HAR 6-77-124HAR 6-77-124 External corrosion control: buried or submerged pipelines installed after July HAR 6-77-125HAR 6-77-125 External corrosion control: buried or submerged pipelines installed before HAR 6-77-126HAR 6-77-126 External corrosion control: examination of buried pipeline when exposed HAR 6-77-127HAR 6-77-127 External corrosion control: protective coating HAR 6-77-128HAR 6-77-128 External corrosion control: cathodic protection HAR 6-77-129HAR 6-77-129 External corrosion control: monitoring HAR 6-77-130HAR 6-77-130 External corrosion control: electrical isolation HAR 6-77-131HAR 6-77-131 External corrosion control: test stations HAR 6-77-132HAR 6-77-132 External corrosion control: test leads HAR 6-77-133HAR 6-77-133 External corrosion control: interference currents HAR 6-77-134HAR 6-77-134 Internal corrosion control: general HAR 6-77-135HAR 6-77-135 Internal corrosion control: monitoring HAR 6-77-136HAR 6-77-136 Atmospheric corrosion control: general HAR 6-77-137HAR 6-77-137 Atmospheric corrosion control: monitoring HAR 6-77-138HAR 6-77-138 Remedial measures: general HAR 6-77-139HAR 6-77-139 Remedial measures: transmission lines HAR 6-77-140HAR 6-77-140 Remedial measures: distribution lines other than cast iron or ductile iron HAR 6-77-141HAR 6-77-141 Remedial measures: cast iron and ductile iron pipelines HAR 6-77-142HAR 6-77-142 Corrosion control records HAR 6-77-143HAR 6-77-143 Scope HAR 6-77-144HAR 6-77-144 General requirements HAR 6-77-145HAR 6-77-145 Strength test requirements for steel pipeline to operate at a hoop stress of HAR 6-77-146HAR 6-77-146 Test requirements for pipelines to operate at a hoop stress less than thirty HAR 6-77-147HAR 6-77-147 Test requirements for pipelines to operate below 100 p HAR 6-77-148HAR 6-77-148 Test requirements for service lines HAR 6-77-149HAR 6-77-149 Test requirements for plastic pipelines HAR 6-77-150HAR 6-77-150 Environmental protection and safety requirements HAR 6-77-151HAR 6-77-151 Records HAR 6-77-152HAR 6-77-152 Scope HAR 6-77-153HAR 6-77-153 General requirements HAR 6-77-154HAR 6-77-154 Uprating to a pressure that will produce a hoop stress of thirty percent or HAR 6-77-155HAR 6-77-155 Uprating: steel pipelines to a pressure that will produce a hoop stress less HAR 6-77-156HAR 6-77-156 Scope HAR 6-77-157HAR 6-77-157 General provisions HAR 6-77-158HAR 6-77-158 Essentials of operating and maintenance plan HAR 6-77-159HAR 6-77-159 Initial determination of class location and confirmation or establishment of HAR 6-77-160HAR 6-77-160 Change in class location: required study HAR 6-77-161HAR 6-77-161 Change in class location: confirmation or revision of maximum allowable HAR 6-77-162HAR 6-77-162 Continuing surveillance HAR 6-77-163HAR 6-77-163 Damage prevention program HAR 6-77-164HAR 6-77-164 Emergency plans HAR 6-77-165HAR 6-77-165 Investigation of failures HAR 6-77-166HAR 6-77-166 Maximum allowable operating pressure: steel or plastic pipelines HAR 6-77-167HAR 6-77-167 Maximum allowable operating pressure: high-pressure distribution systems HAR 6-77-168HAR 6-77-168 Maximum and minimum allowable operating pressure: low-pressure HAR 6-77-169HAR 6-77-169 Odorization of gas HAR 6-77-170HAR 6-77-170 Tapping pipelines under pressure HAR 6-77-171HAR 6-77-171 Purging of pipelines HAR 6-77-172HAR 6-77-172 Scope HAR 6-77-173HAR 6-77-173 General HAR 6-77-174HAR 6-77-174 Transmission lines: patrolling HAR 6-77-175HAR 6-77-175 Transmission lines: leakage surveys HAR 6-77-176HAR 6-77-176 Line markers for mains and transmission lines HAR 6-77-177HAR 6-77-177 Transmission lines: record keeping HAR 6-77-178HAR 6-77-178 Transmission lines: General requirements for repair procedures HAR 6-77-179HAR 6-77-179 Transmission lines: permanent field repair of imperfections and damages HAR 6-77-180HAR 6-77-180 Transmission lines: permanent field repair of welds HAR 6-77-181HAR 6-77-181 Transmission lines: permanent field repair of leaks HAR 6-77-182HAR 6-77-182 Transmission lines: testing of repairs HAR 6-77-183HAR 6-77-183 Distribution systems: Patrolling HAR 6-77-184HAR 6-77-184 Distribution systems: leakage surveys and procedures HAR 6-77-185HAR 6-77-185 Test requirements for reinstating service lines HAR 6-77-186HAR 6-77-186 Abandonment or inactivation of facilities HAR 6-77-187HAR 6-77-187 Compressor stations: procedures for gas compressor units HAR 6-77-188HAR 6-77-188 Compressor stations: inspection and testing of relief devices HAR 6-77-189HAR 6-77-189 Compressor stations: Isolation of equipment for maintenance or alterations HAR 6-77-190HAR 6-77-190 Compressor stations: Storage of combustible materials HAR 6-77-191HAR 6-77-191 Pipe-type and bottle-type holders: Plan for inspection and testing HAR 6-77-192HAR 6-77-192 Pressure limiting and regulating stations: inspection and testing HAR 6-77-193HAR 6-77-193 Pressure limiting and regulating stations: telemetering or recording gages HAR 6-77-194HAR 6-77-194 Pressure limiting and regulating stations: testing of relief devices HAR 6-77-195HAR 6-77-195 Valve maintenance: transmission lines HAR 6-77-196HAR 6-77-196 Valve maintenance: distribution systems HAR 6-77-197HAR 6-77-197 Vault maintenance HAR 6-77-198HAR 6-77-198 Prevention of accidental ignition HAR 6-77-199HAR 6-77-199 Caulked bell and spigot joints HAR 6-77-200HAR 6-77-200 Protecting cast-iron pipelines

Browse regulation

Sections200

HAR 6-77 Appendix AHAR 6-77 Appendix A Incorporated by Reference HAR 6-77 Appendix BHAR 6-77 Appendix B Qualification of Pipe HAR 6-77 Appendix CHAR 6-77 Appendix C Qualification of Welders for Low Stress Level Pipe HAR 6-77 Appendix DHAR 6-77 Appendix D Criteria for Cathodic Protection and Determination of Measurements HAR 6-77-1HAR 6-77-1 Scope of chapter HAR 6-77-2HAR 6-77-2 Definitions HAR 6-77-3HAR 6-77-3 Incorporation by reference HAR 6-77-4HAR 6-77-4 Telephonic notice of certain incidents HAR 6-77-5HAR 6-77-5 Addressee for written reports HAR 6-77-6HAR 6-77-6 Distribution system: incident report HAR 6-77-7HAR 6-77-7 Distribution system: annual report HAR 6-77-8HAR 6-77-8 Distribution systems reporting: transmission pipelines, transmission or HAR 6-77-9HAR 6-77-9 Transmission and gathering systems: incident report HAR 6-77-10HAR 6-77-10 Transmission and gathering systems: annual report HAR 6-77-11HAR 6-77-11 Report forms HAR 6-77-12HAR 6-77-12 Reporting safety-related conditions HAR 6-77-13HAR 6-77-13 Filing safety-related condition reports HAR 6-77-14HAR 6-77-14 Class locations HAR 6-77-15HAR 6-77-15 Gathering lines HAR 6-77-16HAR 6-77-16 Petroleum gas systems HAR 6-77-17HAR 6-77-17 General HAR 6-77-18HAR 6-77-18 Conversion to service subject to this chapter HAR 6-77-19HAR 6-77-19 Scope HAR 6-77-20HAR 6-77-20 General HAR 6-77-21HAR 6-77-21 Steel pipe HAR 6-77-23HAR 6-77-23 Plastic pipe HAR 6-77-25HAR 6-77-25 Marking of materials HAR 6-77-26HAR 6-77-26 Transportation of pipe HAR 6-77-27HAR 6-77-27 Scope HAR 6-77-28HAR 6-77-28 General HAR 6-77-29HAR 6-77-29 Design formula for steel pipe HAR 6-77-30HAR 6-77-30 Yield strength (S) for steel pipe HAR 6-77-31HAR 6-77-31 Nominal wall thickness (t) for steel pipe HAR 6-77-32HAR 6-77-32 Design factor (F) for steel pipe HAR 6-77-33HAR 6-77-33 Longitudinal joint factor (E) for steel pipe HAR 6-77-34HAR 6-77-34 Temperature derating factor (T) for steel pipe HAR 6-77-37HAR 6-77-37 Design of plastic pipe HAR 6-77-38HAR 6-77-38 Design limitations for plastic pipe HAR 6-77-39HAR 6-77-39 Design of copper pipe HAR 6-77-40HAR 6-77-40 Scope HAR 6-77-41HAR 6-77-41 General requirements HAR 6-77-42HAR 6-77-42 Qualifying metallic components HAR 6-77-43HAR 6-77-43 Valves HAR 6-77-44HAR 6-77-44 Flanges and flange accessories HAR 6-77-45HAR 6-77-45 Standard fittings HAR 6-77-46HAR 6-77-46 Tapping HAR 6-77-47HAR 6-77-47 Components fabricated by welding HAR 6-77-48HAR 6-77-48 Welded branch connections HAR 6-77-49HAR 6-77-49 Extruded outlets HAR 6-77-50HAR 6-77-50 Flexibility HAR 6-77-51HAR 6-77-51 Supports and anchors HAR 6-77-52HAR 6-77-52 Compressor stations: design and construction HAR 6-77-53HAR 6-77-53 Compressor stations: liquid removal HAR 6-77-54HAR 6-77-54 Compressor stations: emergency shutdown HAR 6-77-55HAR 6-77-55 Compressor stations: pressure limiting devices HAR 6-77-56HAR 6-77-56 Compressor stations: additional safety equipment HAR 6-77-57HAR 6-77-57 Compressor stations: ventilation HAR 6-77-58HAR 6-77-58 Pipe-type and bottle-type holders HAR 6-77-59HAR 6-77-59 Additional provisions for bottle-type holders HAR 6-77-60HAR 6-77-60 Transmission line valves HAR 6-77-61HAR 6-77-61 Distribution line valves HAR 6-77-62HAR 6-77-62 Vaults: structural design requirements HAR 6-77-63HAR 6-77-63 Vaults: accessibility HAR 6-77-64HAR 6-77-64 Vaults: sealing, venting, and ventilation HAR 6-77-65HAR 6-77-65 Vaults: drainage and waterproofing HAR 6-77-66HAR 6-77-66 Design pressure of plastic fittings HAR 6-77-67HAR 6-77-67 Valve installation in plastic pipe HAR 6-77-68HAR 6-77-68 Protection against accidental overpressuring HAR 6-77-69HAR 6-77-69 Control of the pressure of gas delivered from high-pressure distribution HAR 6-77-70HAR 6-77-70 Requirements for design of pressure relief and limiting devices HAR 6-77-71HAR 6-77-71 Required capacity of pressure relieving and limiting stations HAR 6-77-72HAR 6-77-72 Instrument, control, and sampling pipe and components HAR 6-77-73HAR 6-77-73 Scope HAR 6-77-74HAR 6-77-74 Welding-general HAR 6-77-75HAR 6-77-75 Qualification of welders HAR 6-77-76HAR 6-77-76 Limitations on welders HAR 6-77-77HAR 6-77-77 Protection from weather HAR 6-77-78HAR 6-77-78 Miter joints HAR 6-77-79HAR 6-77-79 Preparation for welding HAR 6-77-80HAR 6-77-80 Inspection and test of welds HAR 6-77-81HAR 6-77-81 Nondestructive testing HAR 6-77-82HAR 6-77-82 Repair or removal of defects HAR 6-77-83HAR 6-77-83 Scope HAR 6-77-84HAR 6-77-84 General HAR 6-77-85HAR 6-77-85 Cast iron pipe HAR 6-77-86HAR 6-77-86 Ductile iron pipe HAR 6-77-87HAR 6-77-87 Copper pipe HAR 6-77-88HAR 6-77-88 Plastic pipe HAR 6-77-89HAR 6-77-89 Plastic pipe; qualifying joining procedures HAR 6-77-90HAR 6-77-90 Plastic pipe; qualifying persons to make joints HAR 6-77-91HAR 6-77-91 Plastic pipe, inspection of joints HAR 6-77-92HAR 6-77-92 Scope HAR 6-77-93HAR 6-77-93 Compliance with specifications or standards HAR 6-77-94HAR 6-77-94 Inspection: general HAR 6-77-95HAR 6-77-95 Inspection of materials HAR 6-77-96HAR 6-77-96 Repair of steel pipe HAR 6-77-97HAR 6-77-97 Repair of plastic pipe HAR 6-77-98HAR 6-77-98 Bends and elbows HAR 6-77-99HAR 6-77-99 Wrinkle bends in steel pipe HAR 6-77-100HAR 6-77-100 Protection from hazards HAR 6-77-101HAR 6-77-101 Installation of pipe in a ditch HAR 6-77-102HAR 6-77-102 Installation of plastic pipe HAR 6-77-103HAR 6-77-103 Casing HAR 6-77-104HAR 6-77-104 Underground clearance HAR 6-77-105HAR 6-77-105 Cover HAR 6-77-106HAR 6-77-106 Scope HAR 6-77-107HAR 6-77-107 Customer meters and regulators: location HAR 6-77-108HAR 6-77-108 Customer meters and regulators: protection from damage HAR 6-77-109HAR 6-77-109 Customer meters and regulators: installation HAR 6-77-110HAR 6-77-110 Customer meter installations: operating pressure HAR 6-77-111HAR 6-77-111 Service lines: installation HAR 6-77-112HAR 6-77-112 Service lines: valve requirements HAR 6-77-113HAR 6-77-113 Service lines: location of valves HAR 6-77-114HAR 6-77-114 Service lines: general requirements for connections to main piping HAR 6-77-115HAR 6-77-115 Service lines: connections to cast iron or ductile iron mains HAR 6-77-116HAR 6-77-116 Service lines: steel HAR 6-77-117HAR 6-77-117 Service lines: cast iron and ductile iron HAR 6-77-118HAR 6-77-118 Service lines: plastic HAR 6-77-119HAR 6-77-119 Service lines: copper HAR 6-77-120HAR 6-77-120 New service lines not in use HAR 6-77-121HAR 6-77-121 Scope HAR 6-77-122HAR 6-77-122 Applicability to converted pipelines HAR 6-77-123HAR 6-77-123 General HAR 6-77-124HAR 6-77-124 External corrosion control: buried or submerged pipelines installed after July HAR 6-77-125HAR 6-77-125 External corrosion control: buried or submerged pipelines installed before HAR 6-77-126HAR 6-77-126 External corrosion control: examination of buried pipeline when exposed HAR 6-77-127HAR 6-77-127 External corrosion control: protective coating HAR 6-77-128HAR 6-77-128 External corrosion control: cathodic protection HAR 6-77-129HAR 6-77-129 External corrosion control: monitoring HAR 6-77-130HAR 6-77-130 External corrosion control: electrical isolation HAR 6-77-131HAR 6-77-131 External corrosion control: test stations HAR 6-77-132HAR 6-77-132 External corrosion control: test leads HAR 6-77-133HAR 6-77-133 External corrosion control: interference currents HAR 6-77-134HAR 6-77-134 Internal corrosion control: general HAR 6-77-135HAR 6-77-135 Internal corrosion control: monitoring HAR 6-77-136HAR 6-77-136 Atmospheric corrosion control: general HAR 6-77-137HAR 6-77-137 Atmospheric corrosion control: monitoring HAR 6-77-138HAR 6-77-138 Remedial measures: general HAR 6-77-139HAR 6-77-139 Remedial measures: transmission lines HAR 6-77-140HAR 6-77-140 Remedial measures: distribution lines other than cast iron or ductile iron HAR 6-77-141HAR 6-77-141 Remedial measures: cast iron and ductile iron pipelines HAR 6-77-142HAR 6-77-142 Corrosion control records HAR 6-77-143HAR 6-77-143 Scope HAR 6-77-144HAR 6-77-144 General requirements HAR 6-77-145HAR 6-77-145 Strength test requirements for steel pipeline to operate at a hoop stress of HAR 6-77-146HAR 6-77-146 Test requirements for pipelines to operate at a hoop stress less than thirty HAR 6-77-147HAR 6-77-147 Test requirements for pipelines to operate below 100 p HAR 6-77-148HAR 6-77-148 Test requirements for service lines HAR 6-77-149HAR 6-77-149 Test requirements for plastic pipelines HAR 6-77-150HAR 6-77-150 Environmental protection and safety requirements HAR 6-77-151HAR 6-77-151 Records HAR 6-77-152HAR 6-77-152 Scope HAR 6-77-153HAR 6-77-153 General requirements HAR 6-77-154HAR 6-77-154 Uprating to a pressure that will produce a hoop stress of thirty percent or HAR 6-77-155HAR 6-77-155 Uprating: steel pipelines to a pressure that will produce a hoop stress less HAR 6-77-156HAR 6-77-156 Scope HAR 6-77-157HAR 6-77-157 General provisions HAR 6-77-158HAR 6-77-158 Essentials of operating and maintenance plan HAR 6-77-159HAR 6-77-159 Initial determination of class location and confirmation or establishment of HAR 6-77-160HAR 6-77-160 Change in class location: required study HAR 6-77-161HAR 6-77-161 Change in class location: confirmation or revision of maximum allowable HAR 6-77-162HAR 6-77-162 Continuing surveillance HAR 6-77-163HAR 6-77-163 Damage prevention program HAR 6-77-164HAR 6-77-164 Emergency plans HAR 6-77-165HAR 6-77-165 Investigation of failures HAR 6-77-166HAR 6-77-166 Maximum allowable operating pressure: steel or plastic pipelines HAR 6-77-167HAR 6-77-167 Maximum allowable operating pressure: high-pressure distribution systems HAR 6-77-168HAR 6-77-168 Maximum and minimum allowable operating pressure: low-pressure HAR 6-77-169HAR 6-77-169 Odorization of gas HAR 6-77-170HAR 6-77-170 Tapping pipelines under pressure HAR 6-77-171HAR 6-77-171 Purging of pipelines HAR 6-77-172HAR 6-77-172 Scope HAR 6-77-173HAR 6-77-173 General HAR 6-77-174HAR 6-77-174 Transmission lines: patrolling HAR 6-77-175HAR 6-77-175 Transmission lines: leakage surveys HAR 6-77-176HAR 6-77-176 Line markers for mains and transmission lines HAR 6-77-177HAR 6-77-177 Transmission lines: record keeping HAR 6-77-178HAR 6-77-178 Transmission lines: General requirements for repair procedures HAR 6-77-179HAR 6-77-179 Transmission lines: permanent field repair of imperfections and damages HAR 6-77-180HAR 6-77-180 Transmission lines: permanent field repair of welds HAR 6-77-181HAR 6-77-181 Transmission lines: permanent field repair of leaks HAR 6-77-182HAR 6-77-182 Transmission lines: testing of repairs HAR 6-77-183HAR 6-77-183 Distribution systems: Patrolling HAR 6-77-184HAR 6-77-184 Distribution systems: leakage surveys and procedures HAR 6-77-185HAR 6-77-185 Test requirements for reinstating service lines HAR 6-77-186HAR 6-77-186 Abandonment or inactivation of facilities HAR 6-77-187HAR 6-77-187 Compressor stations: procedures for gas compressor units HAR 6-77-188HAR 6-77-188 Compressor stations: inspection and testing of relief devices HAR 6-77-189HAR 6-77-189 Compressor stations: Isolation of equipment for maintenance or alterations HAR 6-77-190HAR 6-77-190 Compressor stations: Storage of combustible materials HAR 6-77-191HAR 6-77-191 Pipe-type and bottle-type holders: Plan for inspection and testing HAR 6-77-192HAR 6-77-192 Pressure limiting and regulating stations: inspection and testing HAR 6-77-193HAR 6-77-193 Pressure limiting and regulating stations: telemetering or recording gages HAR 6-77-194HAR 6-77-194 Pressure limiting and regulating stations: testing of relief devices HAR 6-77-195HAR 6-77-195 Valve maintenance: transmission lines HAR 6-77-196HAR 6-77-196 Valve maintenance: distribution systems HAR 6-77-197HAR 6-77-197 Vault maintenance HAR 6-77-198HAR 6-77-198 Prevention of accidental ignition HAR 6-77-199HAR 6-77-199 Caulked bell and spigot joints HAR 6-77-200HAR 6-77-200 Protecting cast-iron pipelines

Related 1 Definitions History 1 Authority 1

RegulationsHAR 6-77-95

Regulationhistorical

HAR 6-77-95

HAR 6-77-95 Inspection of materials

Snapshot 2026-08-12 Government source

Hawaii Public Utilities CommissionOfficial agency material

1 passages

be visually inspected at the site of installation to ensure that it has not sustained any visually determinable damage that could impair its serviceability. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.307, October 1, 1990)

PreviousHAR 6-77-94 NextHAR 6-77-96

Related 1 Definitions History 1 Authority 1 Community

Treatment labels are shown only when backed by an indexed source relationship. Event dates link to official evidence.

1994-04-15adopted

HAR 6-77-95 chapter adoption

Ask the corpus

Claims link back to retrieved source passages.

Record details

Retrieved: Aug 12, 2026
Version: 2026-08-12

7290325d27d8f2b83f…