System and methods for ensuring proper use of personal protective equipment for work site hazards

• US 8,384,548 B2
• Filed: 01/26/2009
• Issued: 02/26/2013
• Est. Priority Date: 08/07/2007
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Knopf, Kevin Michael, Lottmann, Todd Francis
• Primary Examiner(s): Young, Wayne
• Assistant Examiner(s): Nguyen, An T
• Application Number:
  US12/359,518
• Publication Number:
  US 20100045464A1
• Time in Patent Office: 1,492 Days
• Field of Search: 340/500, 340/540, 340/573.1, 340/825, 340/5.1, 340/5.2, 340/5.21
• US Class Current: 340/573.1
• CPC Class Codes: E04G 21/32 Safety or protective measures for persons during the construction of buildings relating to scaffolds E04G5/00; climbing tools, e.g. climbing irons for masts A63B27/00; ropes or belts for life saving A62B1/16, A62B35/00
• CPC Class Codes: F16P 3/147 using electro-magnetic technology, e.g. tags or radar
• CPC Class Codes: G05B 2219/40202 Human robot coexistence
• CPC Class Codes: G21F 3/02 Clothing

Abstract

Electronic monitoring systems and methods for detecting and verifying the adequacy of personal protective equipment needed by a person to complete a potentially hazardous task. Items providing different predetermined levels of protection may be identified and evaluated in light of specific risk potentials posed at specific locations, such as different portions of energized electrical circuitry presenting different arc flash hazard risks. Individuals may also be identified and determined to be authorized or unauthorized to perform a potentially hazardous task at a specific location. Confirmation features, alarm features, and event logs may be provided, and the monitoring systems and methods may be integrated with circuit protector monitoring systems and functionality.

Claims

1. A monitoring system for ensuring a proper use of a plurality of different items of personal protective equipment for potential hazards presented to a plurality of persons while servicing energized electrical circuitry, the system comprising:

an equipment identification element coupled to at least one of the plurality of items of personal protective equipment to be used by the plurality of persons, each of the plurality of items of personal protective equipment adapted to provide one of a plurality of predetermined levels of protection to each of the plurality of persons in the event of an arc flash incident occurring while the energized electrical circuitry is being serviced, each respective predetermined level of protection corresponding to different arc flash incident risks posed by the energized electrical circuitry in different portions of an electrical power system;

a detector located proximate a portion of the energized electrical circuitry to be serviced and configured to detect the equipment identification element when the at least one of the plurality of items of the personal protective equipment item is by each of the plurality of persons within a predetermined spatial distance of the portion of energized electrical circuitry;

a lockout device allowing or denying access to the potential hazards of the energized electrical circuitry;

a processor-based device configured to;

determine, based upon a detected characteristic of each of the equipment identification elements presented by the plurality of persons, a respective one of the predetermined levels of protection corresponding to the equipment identification element;

verify, based on a specific potential arc flash energy intensity of the electrical circuitry to be serviced at the location of the detector, whether the predetermined level of protection associated with the equipment identification element presented is qualitatively appropriate to provide an adequate level of protection to each of the plurality of persons when servicing the electrical circuitry;

operate the lockout device and provide access to the energized electrical circuitry by the plurality of persons when the items of personal protective equipment corresponding to all of the plurality of persons has been verified as qualitatively appropriate; and

operate the lockout device to deny access to the energized electrical circuitry by the plurality of persons if any one of the items of personal protective equipment corresponding to any of the plurality of persons has not been verified as qualitatively appropriate.

2. The system of claim 1, further comprising an activation element, the detector configured to communicate with the equipment identification element only after the activation element is manipulated by one of the plurality of persons.

3. The system of claim 2, wherein the activation element is selected from the group consisting of a pushbutton, a lever, a toggle switch, a keypad, and a magnetic card reader.

4. The system of claim 2, wherein the activation element is mounted to an electrical cabinet containing the portion of the energized electrical circuitry to be serviced.

5. The system of claim 2, wherein the processor-based device is configured to log occurrences wherein the activation element is manipulated and at least one of the predetermined levels of protection for at least one of the items of personal protective equipment is not verified as appropriate.

6. The system of claim 1, wherein the detector is mounted to an electrical cabinet containing the portion of the energized electrical circuitry to be serviced.

7. The system of claim 1, wherein the energized electrical circuitry is contained in an electrical cabinet, the cabinet having a plurality of access doors each respectively exposing a sub-portion of the portion of the electrical circuitry to be serviced when opened.

8. The system of claim 7, wherein each of the plurality of access doors is lockable and unlockable by the processor-based device.

9. The system of claim 1, further comprising an indication device located proximate the portion of energized electrical circuitry to be serviced, the indication device identifying whether the predetermined level of protection associated with the equipment identification element for all of the plurality of persons has been verified to be appropriate.

10. The system of claim 9, wherein the indication device comprises lights displayed in one of at least two colors.

11. The system of claim 10, wherein the lights include light emitting diodes of different colors.

12. The system of claim 9, wherein the indication device includes a representation of a human person and associated items of personal protective gear for different portions of the person'"'"'s body, and the indication element identifies, via the representation of the human person, which of the associated items of personal protective gear have been detected and verified.

13. The system of claim 1, further comprising a worker identification element uniquely identifying each of the plurality of persons associated with the personal protective equipment, and the processor-based device adapted to determine whether each of the plurality of persons is authorized to service the energized electrical circuitry based upon a detected characteristic of the respective worker identification element associated with each of the plurality of persons.

14. The system of claim 12, wherein the processor-based device is further configured to:

operate the lockout device and provide access to the energized electrical circuitry by the plurality of persons when all of the plurality of persons are authorized; and

operate the lockout device to deny access to the energized electrical circuitry by the plurality of persons when at least one of the plurality of persons is not authorized.

15. The system of claim 13, further comprising an indication device located proximate the energized electrical circuitry, the indication device providing confirmation regarding a number of persons that have been detected.

16. The system of claim 15, the indication device providing confirmation whether detected person are authorized.

17. The system of claim 16, wherein the indication device comprises at least one light indicating whether the predetermined level of protection associated with the equipment identification element presented is qualitatively appropriate.

18. The system of claim 13, further comprising at least one master identification element, and when the master identification element is detected by the detector, the lockout device is operated without verifying whether the predetermined level of protection associated with the equipment identification elements presented is qualitatively appropriate.

19. The system of claim 1, wherein the processor-based device is configured to transmit data corresponding to detected items of personal protective equipment to a remote location.

20. The system of claim 19, wherein the processor-based device is configured to wirelessly transmit data corresponding to detected items of personal protective equipment to a remote location.

21. The system of claim 1, wherein the detector is one of an RFID reader or interrogator, a bar code scanner, and an x-ray scanner.

22. The system of claim 2, wherein the processor-based device is configured to, after an expiration of a predetermined time interval beginning when the activation element is manipulated, cause the detector to operate to confirm the presence or absence of items of equipment identification element proximate the portion of the energized electrical circuitry.

23. The system of claim 22, wherein if detected items of personal protective equipment are verified as appropriate, the processor-based device resets the predetermined time interval, and at the expiration therefore, causes the detector to operate to confirm the presence or absence of the detected items of personal protective equipment.

24. The system of claim 1, wherein the energized electrical circuitry is contained an electrical cabinet including at least one door, the system further comprising at least one door latch sensor detecting a latched or unlatched state of the door.

25. The system of claim 24, further comprising an alarm element indicating the latched or unlatched state of the door.

26. The system of claim 24, wherein the processor-based device is adapted to log occurrences of the door in an unlatched state.

27. The system of claim 1, wherein the electrical circuitry includes one or more circuit protectors provided with a sensor element, the detector detecting an operating state of the one or more circuit protectors in addition to detecting the identification elements of the personal protective equipment.

28. The system of claim 27, wherein the one or more circuit protectors includes a fuse.

29. The system of claim 1, wherein the personal protective equipment corresponding to each of the predetermined levels of protection comprises one or more of a hard hat, a face shield, a flame resistant neck protector, an ear protector, a protective suit, an insulated rubber glove, an insulated piece of footwear, and an insulated tool.

30. The system of claim 1, further comprising at least one state indicator element for an electrical component, the detector configured to communicate with the state indicator.

31. The system of claim 1, wherein the electrical circuitry includes at least one circuit protector, the circuit protector received in a holder, the holder provided with a holder identification element, and the detector communicating with the holder identification element.

32. The system of claim 1, further comprising a management system remotely located from the processor-based device, and another detector remotely located from the circuitry and configured to communicate with the equipment identification element for initialization purposes.

33. The system of claim 1, further comprising a sensor tag protector.

34. The system of claim 1, wherein the energized electrical circuitry is contained in an electrical cabinet, the cabinet having at least one access door exposing a sub-portion of the portion of the electrical circuitry to be serviced when opened, and

wherein the processor based device is configured to determine a state of the door as opened or closed;

and

wherein the processor based device is configured to account for the state of the door when verifying whether the predetermined level of protection is appropriate.

35. The system of claim 1, further comprising an activation element,

wherein the processor based device is configured to determine a manipulation of the activation element;

and

wherein the processor based device is configured to account for whether or not the activation element has been manipulated when verifying whether the predetermined level of protection is appropriate.

36. The system of claim 1, wherein the processor based device is further configured to, if the predetermined level of protection associated with the equipment identification element presented is not verified as appropriate, identify the same to a user.