Racking, Stabbing, Switching of high energy electrical systems

Published on Jan. 18, 2020 By ES Staff

High energy electrical systems have the potential to cause serious injury with shock and flash hazards and significant equipment damage. During racking, stabbing, and switching of high energy ...


Recommended sound pressure level for offshore facilities

Published on Nov. 18, 2019 By ES Staff

Recommended sound (noise) pressure control level for offshore facilities according to industry standards. Flares During Normal Operation (no significant flaring), the maximum sound level of ...


Unauthorized changes to alarm configuration should be checked as part of circuit maintenance

Published on Nov. 6, 2019 By ES Staff

This following case supports the need to provide a permanent record to document controller settings/configuration for programmable heating controllers in a manner that can be easily used. Lock...


The need for ground leakage equipment protection and the need to have the controller switch

Published on Oct. 25, 2019 By ES Staff

This lesson learned reveals that the arcing between the bus and the metallic braid across the Fluoropolymer jacket was sustained for some period of time. The fault current was sufficient to ge...


Why a Work Permit is needed for Hazardous Work to ensure safety for all involved

Published on Oct. 18, 2019 By ES Staff

The Work Permit is designed to ensure full communication takes place between the area(s) involved, the owner of the affected equipment, and individual(s) performing the work so that hazardous ...


Cold weather instrumentation design and the need to perform regular preventive maintenance

Published on Oct. 14, 2019 By ES Staff

The following lessons learned is an example of an industry loss study that determined that instruments in critical service should require routine maintenance and be provided with regular monit...


Working on or near exposed energized electrical equipment

Published on Oct. 10, 2019 By ES Staff

The purpose of this document is to protect personnel when working on or near exposed energized electrical circuits and equipment. First and foremost, working on unguarded energized equipment ...


Siting or relocating temporary structures for use during construction or facility turnarounds

Published on Oct. 7, 2019 By ES Staff

This bulletin is to include roles and steps to conduct the siting analysis, anticipated use and estimated occupancy levels, management review and approval, and retention of associated documentation....


Overheating of pre-insulated instrument tubing and freeze protection lesson learned in supporting the use of ground-fault equipment protection

Published on Oct. 4, 2019 By ES Staff

Overheating of pre-insulated instrument tubing exceeded the service temperature of the tracer materials (Polyolefin) which set up conditions for an arcing ground fault as the energized bus con...


Materials Testing Machines Elements

Published on Sept. 23, 2019 By ES Staff

Testing Machines typically used for the mechanical testing of materials usually contain the following elements for gripping the specimen for deforming it for measuring the load required in...


Ground-fault problems are not limited to self-limiting cables

Published on Sept. 12, 2019 By ES Staff

The use of a ground-fault equipment protection device would detected the fault current in the early stages and tripped the circuit when there is problem with the system. It provides evidence t...


Safe Practice of Removing Power to a Heater Circuit Whenever the Thermal Insulation is Removed

Published on Sept. 9, 2019 By ES Staff

This lesson learned supports the safe practice of removing power to a heater circuit whenever the thermal insulation is removed. Ground leakage equipment protection devices limit the energy av...