Who's Online Now
0 registered members (), 12 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
September
S M T W T F S
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30
Newest Members
XP200, Andris Otis, pincuselevator, Ahamed, Đặng Minh Vũ
6181 Registered Users
Forum Statistics
Forums13
Topics4,882
Posts29,484
Members6,181
Most Online117
Jan 16th, 2020
Previous Thread
Next Thread
Print Thread
#28226 - 11/18/19 10:45 PM Discuss Close Call  
Joined: Jan 2015
Posts: 75
Turbo6 Offline
journeyman
Turbo6  Offline
journeyman

Joined: Jan 2015
Posts: 75
Chicago
I see several possibilities that may have added to damag.

Attached Files
#28237 - 11/20/19 02:54 AM Re: Discuss Close Call [Re: Turbo6]  
Joined: Nov 2009
Posts: 258
Johnny Offline
Journeyman
Johnny  Offline
Journeyman

Joined: Nov 2009
Posts: 258
Portland. Oregon
Sounds like the car did not suicide properly. Proper crank up procedures were not followed

#28243 - 11/20/19 08:26 PM Re: Discuss Close Call [Re: Turbo6]  
Joined: Dec 2010
Posts: 459
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 459
So. California
All from a generator swap? Wow...that’s no stupid controller either.
Rocketing into the OH like the pictures show, seems like a catastrophic brake failure.
It would be of interest as to the list of “whys” this accident happened.
B2 (or 4) up to 39 is a hell of a long ways to generate speed and momentum! Very very fortunate no one was in that cab. I can’t imagine......

#28244 - 11/20/19 10:47 PM Re: Discuss Close Call [Re: Turbo6]  
Joined: Feb 2013
Posts: 593
john jay Offline
addict
john jay  Offline
addict

Joined: Feb 2013
Posts: 593
ohio
I agree, Brake failure is very possibly the culprit. The controller should have faulted, and set the brake.

#28246 - 11/21/19 01:33 AM Re: Discuss Close Call [Re: Turbo6]  
Joined: Aug 2016
Posts: 35
RustyIron Offline
newbie
RustyIron  Offline
newbie

Joined: Aug 2016
Posts: 35
Socal
But did you read the suggestions on how to prevent this?
Some are relevant, some don't strike me as being all that helpful.

1. Notify supervisor before changing generator.
----> Uh... yeah. Because the supervisor would have foreseen this.

2. JHA
---> Uh... yeah. Because a JHA would have prevented this.

3. Car in center of hoist way.
---> Because after 20 floors the car would have been going slower than after 40 floors?

4. Put car on inspection.
---> Always. This is aways good advice. Going to AUTO should be the LAST step.

5. Maintain visual.
---> True dat. This is why I'm not a fan of MRL's.

6. Check direction on INS.
---> Again, testing in INS is always good practice.

7. Second person to pull the disconnect.
---> A buddy is fine. But always know where the disconnect is. When things get too weird and you don't know what's going on, kill it. It might not have helped in this case, but the option should always be in our minds.


One take-away is that brakes are kind of important. That's why they need to be tested. If the car needs to be shut down until the office can send out weights, then the car will just have to be down. It's an inconvenience, but not as inconvenient as an injury or death. These guys were lucky.

#28249 - 11/21/19 08:10 AM Re: Discuss Close Call [Re: Turbo6]  
Joined: Jul 2018
Posts: 5
tayto Offline
stranger
tayto  Offline
stranger

Joined: Jul 2018
Posts: 5
drift car into overhead before startup, this was otis protocol on 401s with ward leonard in my area. pulling the disconnect may not do anything if genset has been labeled wrong by motor shop and/or wired wrong in the field. also can drive through the brake.

#28330 - 11/27/19 07:42 PM Re: Discuss Close Call [Re: Turbo6]  
Joined: Jan 2010
Posts: 619
danzeitz Offline
addict
danzeitz  Offline
addict

Joined: Jan 2010
Posts: 619
st.louis mo
If F1 and F2 were different the car will run in the opposite direction and will not slow down as it’s looking for down when it is running up.

Last edited by danzeitz; 11/27/19 07:43 PM.
#28331 - 11/27/19 08:51 PM Re: Discuss Close Call [Re: Turbo6]  
Joined: Jan 2010
Posts: 619
danzeitz Offline
addict
danzeitz  Offline
addict

Joined: Jan 2010
Posts: 619
st.louis mo
Never mind this controller should of caught that. Was thinking of relay type.


Photo Gallery
The best helper.
Rotary Oildraulic
Old Otis badge.
Brakes,Coil,Rotor
KONE MX10 repair tool kit
Uncle Dad Here?
Refurbished Elevator Equipment
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.025s Queries: 15 (0.006s) Memory: 2.7041 MB (Peak: 2.8923 MB) Zlib disabled. Server Time: 2020-09-24 01:14:09 UTC