A Powercat Senior Mode Portable Cable Puller was submitted to the laboratory for the purpose of failure analysis. The cable puller was taken from operation in an electrical closet just off of an elevator reception area. The unit was installed for the…
A three inch, Schedu1e 40 by 33 inches long, fresh water galvanized steel pipe, from the Astoria fuel depot, was submitted for a cause of failure analysis. The pipe was reported to have been in service for up to sixty years but a heat trace on the pipe…
10 straps were submitted to the laboratory for failure analysis. These Zinc aerial cable support straps were placed on utility poles in a rural Ohio location. With no reported industrial sites for miles, these straps were found to be cracking within four…
Two crimping dies (T & B Nos. 45 and 42), were reported to be used sequentially to secure an electrical cable to the lug. Visual examination, chemical, mechanical and metallographic analyses was performed on the submitted strap sections to look for…
A thirty—four inch length of one inch NPS pipe with a pinhole near one end was submitted for analysis to determine the cause of the pinhole. The pipe was removed from the wall of a high rise building that was built fifteen years ago but only occupied…
A fractured tie rod, the subject of the above referenced caption, was submitted for failure analysis to determine the cause of fracture. It was reported that ‘The assured, while driving in New York, suddenly heard a “pop”, and lost control of the…
Two pairs of valve discs that failed, after an unknown period of service in an ammonia refrigeration compressor, were submitted for of failure analysis. The discs measured 5-11/16 inch outside diameter by 0.56 wide by 0.058 inch thick and were hardened…
It was reported that the operator of a truck was driving when the rear wheels locked, causing the vehicle to slide sideways and overturn. The rear wheels locked and separated from the vehicle when the rear spring assembly failed. It was also reported…
A 5/8—11 by 1—1/2 inch Grade 8 hex head steel cap screw used on a pump assembly had fractured during disassembly of the pump. Visual examination and metallographic analyses was performed on the submitted sections to look for root cause of the failure….
Two segments of a pipe and header cap welded assembly were submitted for a failure analysis. It was reported that these two segments were from a pipe and a cap of a 24 inch Hot Reheat Header from a Heat Recovery Steam Generator (HRSG). Visual examination,…
