Standard Interpretations - Table of Contents
• Standard Number: 1926.1401; 1926.1407; 1926.1408; 1926.1409; 1926.1410

March 31, 2014

MEMORANDUM FOR: REGIONAL ADMINISTRATORS

FROM:    JAMES G. MADDUX

SUBJECT:   Temporary Enforcement Policy for Proximity Alarm and Insulating Link Use with Cranes and Derricks in Construction

Effective April 30, 2014, until further notice, the Occupational Safety and Health Administration (OSHA) intends to follow the temporary enforcement policy described below for use of proximity alarms and insulating links with cranes or derricks while engaged in construction activities near power lines. OSHA initially adopted a temporary enforcement policy for the use of these devices in a June 25, 2012 memorandum, and it was effective July 26, 2012 through November 8, 2013. This memorandum supersedes OSHA's June 25, 2012 memorandum.

The Cranes and Derricks in Construction standard, 29 CFR 1926 Subpart CC ("cranes standard"), includes several options for cranes and derricks performing construction activities near power lines. Some of the options involve proximity alarms or insulating links/devices. Section 1926.1401 of the cranes standard defines "proximity alarm" and "insulating link/device" as devices that warn of proximity to power lines or that insulate against electricity and that have been "...listed, labeled or accepted by a Nationally Recognized Testing Laboratory in accordance with § 29 CFR 1910.7" ("NRTL requirements"). These pieces of safety equipment must meet the performance requirements and the NRTL requirements as defined in § 1926.1401-Definitions to be used on cranes and derricks in construction.

To date, no proximity alarm or insulating link/device meets the NRTL requirements. Additionally, at this time, no NRTL is recognized by the Agency to perform the required testing to list, label or accept either type device. Proximity alarms and insulating links/devices which do not meet the NRTL requirements continue to be available, as