Effective August 15, 2016

Standard Information
Standard Number:
UL 1238
Standard Name:
Control Equipment for Use with Flammable Liquid Dispensing Devices
Standard Edition and Issue Date:
6th Edition Dated July 10, 2015
Date of Previous Revisions to Standard:
5th Edition Revised April 11, 2013
Effective Date of New/Revised Requirements

Effective Date (See Schedule below): August 15, 2016

Impact, Overview, Fees and Action Required

Impact Statement: A review of all Listing Reports is necessary to determine which products comply with new/revised requirements and which products will require re-evaluation. NOTE: Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on Effective Date noted above, unless the product is found to comply with new/revised requirements.

Overview of Changes: The changes with respect to the previous edition include the update and clarification to the Flammability Test and to revise the user replaceable fuse marking. Specific details of new/revised requirements are found in table below.

Schedule: So that shipping of products with Listing Marks will not be interrupted, an approximate schedule has been established to ensure Listing Reports are found compliant by Effective Date:

  • December 17, 2015 = 8 Month Report Review – Intertek will review all Reports. Update if compliance is verified or issue Findings Letter/Quote for any re-evaluations needed
  • February 17, 2016 = 6 Month Quote Cut-off – Quotes returned for necessary re-evaluations
  • July 18, 2016 = 30 Day Warning – Client advised of all non-compliant Reports to be Suspended
  • August 15, 2016 = Effective Date – ATM Suspended for all non-compliant Reports

Fees:An initial review of Listing Report (s) will be covered by a direct billing project and will be invoiced at not more than $1000 per report.

Client Action Required:

Information – To assist our Engineer with review of your Listing Reports, please submit technical information in response to the new/revised paragraphs noted in the attached or explain why these new/revised requirements do not apply to your product (s).

Current Listings Not Active? – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records. We will do this at no charge as long as Intertek is notified in writing prior to the review of your reports.

Description of New/Revised Technical Requirements
39InfoNonmetallic Enclosures
39.3InfoFlammability test

Additions to existing requirements are underlined and deletions are shown lined out below

The test flame is to be obtained by means of a Bunsen or Tirrill burner having a nominal bore of 3/8 inch (9.5 mm) and a length of 4 inches (102 mm) above the primary air inlets. A gas supply of 1000 BTU per cubic foot (37 MJ/m3 ) at normal pressure is to be used and the flame adjusted so that, while the burner is vertical, the overall height of flame is 3/4 inch (19.1 mm). The flame shall be yellow in appearance with no appreciable inner blue cone.

A laboratory type burner having a tube with a length of 100 ±10 mm (3.94 ±0.39 inch) and an inside diameter of 9.5 ±0.3 mm (0.374 ±0.012 inch) is to be used. The barrel is not to be equipped with an end attachment, such as a stabilizer. The burner shall be in compliance with Specification for a Laboratory Burner Used for Small-Scale Burning Tests on Plastic Materials, ASTM D5025. Adjust the burner to produce a blue flame 20 ±1 mm high (3/4 inch nominal). The flame is obtained by adjusting the gas supply and air ports of the burner until a 20 ±1 mm (3/4 inch nominal) yellow-tipped blue flame is produced. Increase the air supply until the yellow tip just disappears. Measure the height of the flame again and readjust it if necessary. The test flame shall be calibrated in accordance with Standard Practice for Calibration of 20 mm and 125 mm Test Flames for Small-Scale Burning Tests on Plastic Materials, ASTM D5207, at least once a month and when the gas supply is changed, test equipment is replaced, or when data is questioned.
47InfoGeneral (MARKING)

New clause added;

There shall be a replacement marking adjacent to a user replaceable fuse or fuseholder. The marking shall be located where it will be readily visible during replacement of the fuse, and shall consist of the word ²CAUTION² and the following or equivalent: ²For Continued Protection Against Risk Of Fire, Replace Only With Same Type __ A, __ V fuse.² The blanks shall have the applicable current and voltage ratings.

CUSTOMERS PLEASE NOTE: This Table and column "Verdict" can be used in determining how your current or future production is or will be in compliance with new/revised requirements.

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