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NASA-LLIS-0235
Lessons Learned - Wind Turbine Generato
Year: 1993
Abstract: Description of Driving Event:
A wind turbine was lowered from its tower and secured to a ground level assembly stand. A blade tip was then removed and the work crew broke for lunch. After lunch the rotor brake was released. Personnel on the ground realized the unbalanced rotor condition as the blade came rapidly to the ground.
The direct cause of the accident was a failure of several knowledgeable personnel in the immediate area to realize the unbalanced conditions of the rotor. A crane operator was available in the immediate area. The crane should have been used to secure the unbalanced rotor and slowly lower it to the ground. This procedure of lowering an unbalanced rotor has been standard procedure in many blade, spool piece, and tip changes in the past.
A wind turbine was lowered from its tower and secured to a ground level assembly stand. A blade tip was then removed and the work crew broke for lunch. After lunch the rotor brake was released. Personnel on the ground realized the unbalanced rotor condition as the blade came rapidly to the ground.
The direct cause of the accident was a failure of several knowledgeable personnel in the immediate area to realize the unbalanced conditions of the rotor. A crane operator was available in the immediate area. The crane should have been used to secure the unbalanced rotor and slowly lower it to the ground. This procedure of lowering an unbalanced rotor has been standard procedure in many blade, spool piece, and tip changes in the past.
Subject: Industrial Operations
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:01:46Z | |
| date available | 2017-09-04T16:01:46Z | |
| date copyright | 07/02/1993 | |
| date issued | 1993 | |
| identifier other | RLZCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/64998 | |
| description abstract | Description of Driving Event: A wind turbine was lowered from its tower and secured to a ground level assembly stand. A blade tip was then removed and the work crew broke for lunch. After lunch the rotor brake was released. Personnel on the ground realized the unbalanced rotor condition as the blade came rapidly to the ground. The direct cause of the accident was a failure of several knowledgeable personnel in the immediate area to realize the unbalanced conditions of the rotor. A crane operator was available in the immediate area. The crane should have been used to secure the unbalanced rotor and slowly lower it to the ground. This procedure of lowering an unbalanced rotor has been standard procedure in many blade, spool piece, and tip changes in the past. | |
| language | English | |
| title | NASA-LLIS-0235 | num |
| title | Lessons Learned - Wind Turbine Generato | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1993 | |
| contenttype | fulltext | |
| subject keywords | Industrial Operations | |
| subject keywords | Lifting Devices |