ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 27 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#77964 07/30/01 12:46 PM
Joined: Feb 2001
Posts: 62
M
Mike Offline OP
Member
No one was killed but people were hurt from this accident. http://seattlep-i.nwsource.com/local/33094_boom28.shtml

Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

#77965 07/30/01 04:20 PM
Joined: Oct 2000
Posts: 5,392
S
Member
figures;
they're lookin' to lynch the last tradesman
[Linked Image]

#77966 07/30/01 07:56 PM
Joined: Dec 2000
Posts: 4,291
Member
Any "plumber" that would intentionally cap off a T&P valve isn't a tradesman. He's a menace to society.

I'll go get the rope.

#77967 07/31/01 06:11 PM
A
Anonymous
Unregistered
This comment is not directed at anyone in particular, of course.

The plumber goes in. The T&P valve is leaking. He doesn't have another on his truck, so he just puts a plug in the end and leaves figuring he'll get another one sometime and replace it.


This reminds me of the penny in the Edison base fuse holder of a circuit that keeps blowing, or bypassing a GFCI that is nuisance tripping.

Just maybe the T&P valve was leaking because there was an actual by undetected malfunction of the heater.

Just maybe a GFCI trips because there is a real leak. And we all know that the fuse that keeps blowing is saying that the wires are overloaded.

The T&P valve on the water heater is the only pressure relief valve on many water systems. Capping it when it leaks is a lot like slugging a fuse when it blows.

We simply trust that no one is doing things like these within 465' feet of where we work, walk, or drive..

#77968 08/02/01 11:10 PM
Joined: Jun 2001
Posts: 141
A
Member
This brings back a recollection of a water heater/boiler explosion in a Bell Telephone building many years ago. PRV didn't work, it rocketed up from the basement into the employee cafeteria and exploded. Mass carnage.

Don't recall what the cause was, but it made a lot of us appreciate the importance of having a qualified operating engineer in the building...one who checked the boiler system regularly.

#77969 08/05/01 10:45 AM
Joined: Mar 2001
Posts: 345
T
Member
Quote
Originally posted by Dspark:
This comment is not directed at anyone in particular, of course.

The plumber goes in. The T&P valve is leaking. He doesn't have another on his truck, so he just puts a plug in the end and leaves figuring he'll get another one sometime and replace it.


This reminds me of the penny in the Edison base fuse holder of a circuit that keeps blowing, or bypassing a GFCI that is nuisance tripping.

Just maybe the T&P valve was leaking because there was an actual by undetected malfunction of the heater.

Just maybe a GFCI trips because there is a real leak. And we all know that the fuse that keeps blowing is saying that the wires are overloaded.

The T&P valve on the water heater is the only pressure relief valve on many water systems. Capping it when it leaks is a lot like slugging a fuse when it blows.

We simply trust that no one is doing things like these within 465' feet of where we work, walk, or drive..

That same plumber may have turned off the power to the water heater. The occupant may have accidently turned it back on. One more reason to practice lock out tag out but even that won't always save you. I was working on an exhaust fan at a church summer camp and I had to disconnect it from its power which came from a shared circuit. I locked out and tagged out the circuit. When I returned with the needed parts the lock out had been torn off the breaker and the circuit reenergized to turn on the porch lights. Since no one had messed with the exposed wires no harm resulted but that was pure luck.


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison
#77970 08/05/01 10:45 PM
Joined: Dec 2000
Posts: 4,291
Member
Same plumber defeated a safety device on purpose. If it leaks, run a hose out the door or shut it off.

I'll go find a tree

#77971 08/07/01 04:00 PM
A
Anonymous
Unregistered
That same plumber may have turned off the power to the water heater.
I don't see how that could change the fact that the PRV was capped - a glaring error independent of anything else that was done.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 812
Joined: April 2004
Top Posters(30 Days)
BigB 4
triple 3
Popular Topics(Views)
302,866 Are you busy
232,026 Re: Forum
216,767 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5