The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
22 minutes 4 seconds ago
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
sparkyinak 9
Texas_Ranger 8
Potseal 6
Who's Online
2 registered (LongRunner, sparkyinak), 94 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#149314 - 09/08/03 09:57 PM looking for document on fuse pulling need some help?
jlhmaint Offline
Member

Registered: 05/25/02
Posts: 208
Loc: Fredericktown, OH, U.S.A
I am trying to find an official osha document or saftey document. Were it outlines that pulling a 100amp fuse on a 480volt 3phase panel and putting in a new fuse while the entire circuit is live is wrong and unsafe. The fuse was blown and the reason unknown.

Top
Arc Flash PPE Clothing, LOTO & Insulated Tools
#149315 - 09/08/03 11:11 PM Re: looking for document on fuse pulling need some help?
frank Offline
Member

Registered: 05/29/01
Posts: 361
Loc: windsor ontario canada
Had to put this in.He is supervisor right?I http://www.elec-toolbox.com/Safety/safety.htm

Here is another read carefully http://edis.ifas.ufl.edu/BODY_OA114
[This message has been edited by frank (edited 09-09-2003).]

[This message has been edited by frank (edited 09-09-2003).]

[This message has been edited by frank (edited 09-09-2003).]

Top
#149316 - 09/10/03 12:05 AM Re: looking for document on fuse pulling need some help?
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
jlh,
Not sure if either of these are any use to you, but:
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=240 09
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9805

[This message has been edited by Trumpy (edited 09-10-2003).]
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#149317 - 09/10/03 12:33 PM Re: looking for document on fuse pulling need some help?
BuggabooBren Offline
Member

Registered: 11/15/01
Posts: 336
Loc: NM
Text taken from various Lessons Learned documents:

a) Employees should limit access to damaged equipment and immediately inform proper individuals (i.e., supervision), whenever they discover a piece of equipment that could possibly injure/harm someone, if they were to come near or in contact with it. Employees should never attempt to fix equipment that they have no training or qualifications to fix. Even qualified employees should not attempt to fix equipment until all hazards have been completely identified and mitigated.

b) Basic work control concepts apply to all work regardless of the performer. The Job Safety Analysis (JSA) for the project indicated that such work required either a lockout/tagout or an Energized Work Permit. Work on electrical components requires either a lockout/tagout or extraordinary work controls specified in an approved work package.

c)Verbal instructions are inappropriate especially when involving potentially serious hazards and unfamiliar work. They need to be written as formal procedures to ensure compliance with the tenets of Integrated Safety Management (ISM).

Management needs to emphasize to workers that work that falls outside of skill-of-the-craft for their level of training and expertise cannot be carried out without having formal procedures and/or task-specific controls in place.

A memorandum was distributed to [unnamed] Department personnel emphasizing the necessity of reviewing work practices associated with equipment to ensure the procedures are in compliance with ISM (Integrated Safety Mgmt*) standards before use of these procedures and that work cannot be carried out without involving work planning, even with the best of intentions.

d) Personnel must clearly understand who the “Person in Charge” (PIC) is before, during, and after work activities. The PIC needs to be readily available to monitor work progress, to ensure maintenance activities are conducted according to facility policies and procedures, and that proper turnover is performed to maintain personnel safety. (see note a) about who should perform work - the trained person or the top dog with the authority...?)

In addition, the PIC was not clearly identified or was not trained to do the work. The initial PIC failed to provide effective oversight of the job and did not effectively turn over to a replacement PIC.

e) Lockout/Tagout needs to be performed as early as possible in the sequence of work. Established procedures must be followed to mitigate the hazard even if the worker does not perceive the hazard as justifying the effort needed to mitigate it. When replacing faulty or suspect components, the replaced item should be marked or otherwise segregated from new items to avoid reuse of the faulty or suspect item.

Ensure workers read and understand lockout/tagout procedures, including that they should never do such work alone, especially during off-work hours. Require that personnel invoke a stop work when it appears that an electrical worker is going to work on energized circuits. Conduct a pre-job briefing to identify potential safety risks, to review requisite procedures, and to ensure that timing is not the primary consideration for an activity. Assure that replaced components are identified and isolated from new components to prevent any mix-ups.

f) A highly disciplined approach is necessary to maintain the rigor and attention to detail required by the Lock and Tag program. Management should periodically communicate their expectations concerning the lock and tag program to facility personnel. These expectations should stress the importance of exercising a high level of attention to detail when installing and verifying locks and tags and should emphasize the importance of a sound lock and tag program to ensure the safety of personnel. Everyone involved in the lock and tag process must follow the process rigorously. They should also be held accountable for inadequate performance since safety is at stake.

g) Energized work should only be performed when absolutely necessary. In addition, when circuits are checked for power, the check should be thorough, including several points to ensure all power sources are identified.
(same incident further qualifies who should do the work: Energized electrical work should be performed when absolutely necessary, by a qualified electrician. When circuits are checked for power, the check should be thorough, including several points to ensure all power sources are identified.)


There also appears to be some information in the IEEE Buff Book regarding protection and coordination: http://standards.ieee.org/colorbooks/sampler/Buffbook.pdf

* ISM =
Analyze Hazards
Develop / Implement Controls (for Safety)
Define Work (with attention to Safety issues)
Perform Work (Safely)

Top
#149318 - 09/11/03 08:34 AM Re: looking for document on fuse pulling need some help?
Stuart Offline
Junior Member

Registered: 09/11/03
Posts: 1
Loc: Magnolia, AR
I'm suprised no one looked at NFPA 70B. From Chapter 15 on Fuses:
"15.1 Fuses Rated 1000 Volts or Less.

15.1.1 Installing and Removing Fuses. Fuseholders should be de-energized before installing or removing fuses. Where it is not feasible or would result in a greater hazard to de-energize fuseholders, installation or removal of fuses should be performed in accordance with appropriate safety-related work practices for the task. (See 7.3.3.) (See NFPA 70E , Standard for Electrical Safety Requirements for Employee Workplaces.)"
Which would mean proper flash protection to replace while energized.
I thought it was common sense not to replace a fuse while energized, especially if whatever caused the fuse to blow in the first place may still be there.

Stuart

Top
#149319 - 09/12/03 03:20 PM Re: looking for document on fuse pulling need some help?
Dan Neeser Offline
Member

Registered: 03/12/02
Posts: 29
Loc: St. Louis, MO, USA
Stuart,

Great point about the information on fuse pulling in NFPA 70B. This is a great document for all to have. I was actually going to suggest the same thing since we have little or no information on this subject in the Bussmann documents.

Regards,
Dan

Top
#149320 - 09/12/03 09:43 PM Re: looking for document on fuse pulling need some help?
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
jlh — Obtaining a copy of NFPA 70B-2002 to review the related material around §15.1 and §7.3.3 as discussed by Stuart will help support your case.

From 70B is an absolutely unambiguous statement... Personnel safety, in addition to equipment safety, should be given prime consideration in system design and in establishing adequate maintenance practice. The principal personnel danger from electricity is that of shock, electrocution, and/or severe burns from the electrical arc or its effects, which can be similar to that of an explosion.




[This message has been edited by Bjarney (edited 09-13-2003).]

Top
#149321 - 09/13/03 05:35 PM Re: looking for document on fuse pulling need some help?
jlhmaint Offline
Member

Registered: 05/25/02
Posts: 208
Loc: Fredericktown, OH, U.S.A
were can i get the info online or will i need to go out and buy the book. NFPA site only gives access if you are a paid member the book looks to cost around $35

Top
#149322 - 09/13/03 06:25 PM Re: looking for document on fuse pulling need some help?
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
It is available from NFPA in PDF for $37. In the past, NFPA has not charged me sales tax, or S&H for electronically delivered materials. [Standards sales are their main source of income.]

You receive an email shortly after online order completion with a link to download the PDF and save on your drive. It is 192 pages — 1.5MB file.
http://www.nfpa.org/catalog/product.asp?pid=70B02&src=catalog%20target=_top

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals