| Arc Flash Forum https://brainfiller.com/arcflashforum/ |
|
| Equipment out of service https://brainfiller.com/arcflashforum/viewtopic.php?f=10&t=3167 |
Page 1 of 1 |
| Author: | PaulEngr [ Mon Jan 27, 2014 7:15 am ] |
| Post subject: | Equipment out of service |
When equipment moves out of service (that is, no longer being actively operated or maintained), it looks to be pretty clear from OSHA's standards (1910.147) as well as a letter of interpretation that in this condition, once the equipment is de-energized and physically disconnected so that there are no longer any hazards present, that safety locks MUST be removed. https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=25538 Similar issues would exist for instance in bringing equipment into a state of being serviced because for instance at this point it is moving from OSHA 1926 (construction) rules to OSHA 1910 (general industry) rules. 1926 requires tags but not necessarily locks. 1910 requires locks whenever possible (tags only are allowed but only under very limited circumstances). So...is there any guidance out there as to how to properly move equipment from a state of "out of service" to "in service"? |
|
| Author: | PaulEngr [ Mon Jan 27, 2014 7:35 am ] |
| Post subject: | |
In a follow up, I found the following letter ofi interpretation which seems to suggest that you either pull the fuses, unwire the fedder, remove the plug, or some other means of disabling power, and hang an "out of service" tag on it. Am I on the right track here? https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=25516 Pertinent section: Question (1): Does 29 CFR 1926.417, "Lockout and tagging of circuits," require the use of a lock on deenergized circuits? Answer: Title 29 CFR 1926 Subpart K addresses electrical safety requirements in construction work. Section 1926.417 ("Lockout and tagging of circuits") states: [INDENT](a) Controls. Controls that are to be deactivated during the course of work on energized or deenergized equipment or circuits shall be tagged. (b) Equipment and circuits. Equipment or circuits that are deenergized shall be rendered inoperative and shall have tags attached at all points where such equipment or circuits can be energized. [Emphasis added].[/INDENT] In promulgating this section, the Agency used the phrase "rendered inoperative," rather than "locked out." This indicates that methods other than lock-out would be permissible[url='http://arcflashforum.brainfiller.com/#footnote1']1[/url] , as long as they rendered the equipment or deenergized circuit inoperative. There are a variety of such methods; two examples are: [INDENT](1) Removing a fuse or other circuit element for each phase conductor; or (2) Disconnecting the circuit conductors (including disabling plugs for equipment that is plug-connected). [/INDENT] |
|
| Author: | 321Liftoff [ Mon Jan 27, 2014 10:55 am ] |
| Post subject: | |
Configuration, configuration, configuration control is the way. See at our Centers we use configuration control locks to de-energize an area say foe energy conservation mode, when such area/building is not being used. We add a warning sign to contact the Area/Building Manager to get with the Operations and Maintenance shops prior to re-energizing, in the event there’s some critical component missing or major repair required prior to re-start. As for requirements to re-energize, I’m not aware of any other than the good practice I mentioned above. Note: OSHA does not allow LOTO (1910.147/.333/.269; 1926.417) to be used just to de-energize something, unless it’s being worked upon. Please ref: attached interpretation letter (question for Scenario 4 )we (NASA) received from OSHA on this subject. |
|
| Page 1 of 1 | All times are UTC - 7 hours |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|