Standards & Publications

Browse & Buy UL Standards
Standard 913, Edition 8

Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations

UL Standard
Standard 913, Edition 8 Edition Date: December 06, 2013 ANSI Approved: May 10, 2022 $505.00-$1,258.00
Purchase Options Get Update Alerts
Learn more about UL's Alert Service
Digital View
Learn more about UL's Free Digital View

Revisions and Related Documents

Red Line Std. (12)

May 10, 2022 Redline Revision
December 06, 2019 Redline Revision
March 11, 2019 Redline Revision
December 10, 2018 Redline Revision
October 16, 2015 Redline Revision
April 28, 2015 Redline Revision
Showing 10 of XX
Show All

Proposals (6)

CSDS Proposal   

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.


April 01, 2022
October 12, 2018
August 24, 2018
August 28, 2015
May 01, 2015
March 27, 2015
Showing 10 of XX
Show All


Showing 10 of XX
Show All None available.
Showing 10 of XX
Show All

Other Updates (1)

Showing 10 of XX
Show All


These bulletins are not used in CSDS. These are announcement and report type bulletins.

Summary of Topics (SOT)
August 01, 2017 N/A
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All

Referenced Standards (35)

Below is a list of UL Standards referenced in UL 913

20 14 General-Use Snap Switches
50 13 Enclosures for Electrical Equipment, Non-Environmental Considerations
98 14 Enclosed and Dead-Front Switches
347 7 Medium-Voltage AC Contactors, Controllers, and Control Centers
429 7 Electrically Operated Valves
464 11 Audible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories
486E 5 Standard for Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors
489 13 Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures
498 16 Attachment Plugs and Receptacles
508 18 Industrial Control Equipment
514A 11 Metallic Outlet Boxes
514B 6 Standard for Conduit, Tubing, and Cable Fittings
514C 4 Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
840 3 Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment
864 11 Control Units and Accessories for Fire Alarm Systems
924 10 Emergency Lighting and Power Equipment
943 5 Ground-Fault Circuit-Interrupters
1053 7 Ground-Fault Sensing and Relaying Equipment
1097 6 Double Insulation Systems for Use in Electrical Equipment
1203 6 ExplosionProof and Dust-IgnitionProof Electrical Equipment for Use in Hazardous (Classified) Locations
1598 5 Luminaires
1703 3 Standard for Flat-Plate Photovoltaic Modules and Panels
2054 3 Household and Commercial Batteries
2111 1 Standard for Overheating Protection for Motors
2225 4 Cables and Cable-Fittings For Use In Hazardous (Classified) Locations
248-1 4 Low-Voltage Fuses - Part 1: General Requirements
4248-1 3 Fuseholders - Part 1: General Requirements
5085-1 1 Low Voltage Transformers - Part 1: General Requirements
5085-3 1 Low Voltage Transformers - Part 3: Class 2 and Class 3 Transformers
60079-0 7 Standard for Explosive Atmospheres - Part 0: Equipment - General Requirements
60730-1 5 Automatic Electrical Controls - Part 1: General Requirements
60950-1 2 Information Technology Equipment - Safety - Part 1: General Requirements
61131-2 2 Programmable Controllers - Part 2: Equipment Requirements and Tests
60079-11 6 Explosive Atmospheres - Part 11: Equipment Protection by Intrinsic Safety
60079-47 1 Explosive Atmospheres - Part 47: Equipment Protection by 2-Wire Intrinsically Safe Ethernet Concept (2-WISE)
Showing 10 of XX
Show All

Reverse Referenced Standards (19)

UL 913 is referenced in the following list of UL Standards

87 12 Standard for Power-Operated Dispensing Devices for Petroleum Products
428A 2 Electrically Operated Valves for Gasoline and Gasoline/Ethanol Blends with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85)
428B 2 Electrically Operated Valves for Diesel Fuel, Biodiesel Fuel, Diesel/Biodiesel Blends with Nominal Biodiesel Concentrations Up To 20 Percent (B20), Kerosene, and Fuel Oil
495 5 Power-Operated LP-Gas Dispensing Equipment
583 11 Electric-Battery-Powered Industrial Trucks
698A 4 Industrial Control Panels Relating to Hazardous (Classified) Locations
783 6 Electric Flashlights and Lanterns for Use in Hazardous (Classified) Locations
1238 7 Control Equipment for Use with Flammable Liquid and LP-Gas Dispensing Devices
1238A 3 Outline of Investigation for Battery Operated Hose Nozzle Valve Readers
1254 6 Pre-Engineered and Engineered Dry and Pre-Engineered Wet Chemical Extinguishing System Units
1254 6 Pre-Engineered and Engineered Dry and Pre-Engineered Wet Chemical Extinguishing System Units
1500 3 Standard for Ignition-Protection Test for Marine Products
1740 4 Robots and Robotic Equipment
1836 6 Outline of Investigation for Electric Motors and Generators for Use in Class I, Division 2, Class I, Zone 2, Class II, Division 2 and Zone 22 Hazardous (Classified) Locations
2208 3 Standard for Solvent Distillation Units
2583 1 ANSI/CAN/UL/ULC Fuel Tank Accessories for Flammable and Combustible Liquids
2583 1 Fuel Tank Accessories for Flammable and Combustible Liquids
8521 2 Outline of Investigation for Aboveground Container Refueling Systems for LP-Gas
120202 1 Recommendations for the Preparation, Content, and Organization of Intrinsic Safety Control Drawings
Showing 10 of XX
Show All

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign


Additional information required

To serve you better, please update your account details.

Featured Standards

Recently Published

Coming Soon

UL 48
Electrical Signs
Revision Pages

Meters for Flammable and Combustible Liquids and LP-Gas
Revision Pages

UL 155
Tests for Fire Resistance of Vault and File Room Doors
Revision Pages

UL 310
Electrical Quick-Connect Terminals
New Edition

UL 19
Lined Fire Hose and Hose Assemblies
Revision Pages

UL 104
Elevator Door Locking Devices and Door or Gate Closed Detection Means
New Edition

UL 217
Smoke Alarms
Revision Pages

UL 294
Access Control System Units
Revision Pages