Jensen Petro-Block Handle – Mixer Lockout/Tagout Safety Device | Jensen Mixers
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Jensen Mixer Safety Components

Petro-Block Handle

A positive mechanical lockout device for Jensen side entry tank mixers. Designed to support OSHA lockout/tagout compliance and protect personnel during maintenance and inspection operations.

Mechanical Lockout for Tank Mixer Safety

Maintenance on side entry tank mixers presents a serious hazard: the mixer shaft can rotate unexpectedly if the drive is energized while personnel are working on or near the equipment. Electrical interlocks alone are not sufficient — OSHA requires a positive means of energy isolation for rotating equipment.

The Jensen Petro-Block Handle provides that positive mechanical lockout. It physically prevents the mixer from being energized during maintenance, inspection, seal replacement, propeller service, or any other operation that requires personnel to work near the rotating shaft.

The Petro-Block is designed specifically for Jensen side entry mixers and can be retrofitted to existing units in the field without modification to the drive assembly. It works in conjunction with your facility's existing electrical lockout/tagout procedures to provide a complete energy isolation solution.

OSHA 29 CFR 1910.147

OSHA's Control of Hazardous Energy standard requires that rotating equipment be positively isolated from all energy sources before maintenance begins. The Petro-Block provides the mechanical means to comply with this requirement on Jensen side entry mixers.

Quick Reference

Product
Petro-Block Handle
Function
Positive mechanical lockout
Application
Jensen side entry tank mixers
Compatible Series
400, 500, 600, 800, 900
Installation
Retrofit — no drive modification required
Compliance
Supports OSHA 29 CFR 1910.147
Environment
Petroleum / industrial

Key Features

Engineered for the demands of petroleum tank mixer maintenance in industrial environments.

Positive Mechanical Lockout

The Petro-Block provides a positive mechanical lockout that physically prevents the mixer from being energized while personnel are working on or near the equipment. Unlike electrical interlocks alone, the Petro-Block creates a physical barrier that cannot be bypassed.

Designed for Side Entry Mixers

Engineered specifically for Jensen side entry tank mixers, the Petro-Block integrates directly with the mixer drive assembly. It is compatible with the Series 400, 500, 600, 800, and 900 mixer lines.

Simple Installation

The Petro-Block installs without modification to the existing mixer drive assembly. It is designed for straightforward field installation and can be retrofitted to existing Jensen mixers already in service.

OSHA Lockout/Tagout Compliance

Helps facilities meet OSHA 29 CFR 1910.147 (Control of Hazardous Energy) requirements for lockout/tagout procedures on rotating equipment. The Petro-Block provides the physical means to isolate mechanical energy at the mixer shaft.

Benefits

  • Prevents accidental mixer energization during maintenance
  • Provides positive mechanical energy isolation at the shaft
  • Supports OSHA 29 CFR 1910.147 lockout/tagout compliance
  • Compatible with all Jensen mixer series (400, 500, 600, 800, 900)
  • Retrofittable to existing Jensen mixers in the field
  • No modification to existing drive assembly required
  • Durable construction for industrial petroleum environments
  • Works in conjunction with electrical lockout procedures

Typical Applications

  • Crude oil storage and blending tanks
  • Fuel oil and refined product tanks
  • Petrochemical storage facilities
  • Refineries and terminals
  • Any facility requiring OSHA LOTO compliance on rotating equipment
  • Maintenance and inspection operations on Jensen mixers

Part of a Complete LOTO Program

The Petro-Block is a mechanical component in a complete lockout/tagout program. It should be used in conjunction with your facility's written LOTO procedures, electrical isolation, and personal protective equipment requirements. Contact Northeast Controls for guidance on integrating the Petro-Block into your facility's energy control program.

Questions About the Petro-Block?

Our team can help you determine the correct Petro-Block configuration for your Jensen mixer and advise on integration with your facility's LOTO program.