Kingsbury Construction hired us to wire the new enclosed Pump Station at River Street in Jaffrey, NH.
A manufacturer’s representative came to us with a question. He was selling a designed blending control system to an animal feed handling company. Could we design, build, install and wire the equipment necessary for his equipment and PLC program to operate the existing augers, weigh scales and data systems at the feed mill. We designed controls for 28 VFD controlled augers, turn heads and weigh scales to blend the cattle rations that his equipment created. We installed the control panels, wired the motors and drives, installed new data wiring, installed a new electrical entrance for the plant and successfully commissioned the power and control for the plant.
Variable Frequency Drive (VFD)--Variable Speed Drive (VSD)--Adjustable Speed Drive (ASD)--AC Drive--Inverter Drive;
Over the last 10 years, the NFPA and OSHA have added new safety regulations in NFPA 70E, pertaining to protecting personnel in industrial environments from arc flash injuries. As electricians, we have always been trained in proper Lockout/Tagout procedures, and have taken time to educate ourselves on, and practice, the new arc flash safety regulations and labeling. Beyond that, we perform, in partnership with others, NFPA 70E Arc Flash Analysis. We can offer surveys, identification of risks, compliance options and installation, and wiring services for compliance and arc mitigation.
A client was in need of improving compliance with arc flash safety regulations. We performed a survey of the necessary electrical circuits, including creating and assessing diagrams of the as-built circuitry, and capturing thermal imaging to ensure safe operation. We were able to affordably redistribute circuits to decrease the load on any potentially hazardous conductors, to route all circuits through approved safety devices to ensure compliance with all NEC regulations, and allow for shutdown procedures, with transparent, compliant lockout/tagout.
For more information on Arc Flash Safety and Regulations, please refer to the below links:
- OSHA - Electric Power Generation, Transmission, and Distribution; Electrical Protective Equipment --Final Rule, Effective 07/10/2014
- OSHA - Protections from Flame and Electric Arcs
- OSHA - Arc Flash Handout