I have aluminum silos for holding plastic pellets built to DIN 4119 (which I currently don't own). Per the drawing, they were built with a 0.5 psig overpressure. There is a pressure-vacuum vent valve on the top. The setting at 0.5 psig will provide insufficient relief capacity based on a...
We have had some train coupler pins failed over the past few years and I have been asked to do something about it. The pins fail at the top where an alignment plate is welded (weakly) and also in the middle where push/pull is applied. The failure mode for the latter are simple double/reverse...
Has anyone ever found a way to detect problems with cardan shaft bearings? Is there enough energy and contact to transmit cardan shaft bearing faults through to the nearest machine bearing?
Mark
I gather that the DBT goes both ways, but I am not sure. Most of the texts that I have read clearly point out that some ductile material become brittle when temperature drops below a certain point. However, if the temperature were to rise again and the metal had no cracking and survived, would...
I am looking for information on how thick of a concrete slab I need for 3/8" or 1/2" anchor bolts used to keep a machine from walking while in operation.
Can a flange clamp with injected sealant considered permanent repair for a leak? According to API 570 Section 8.1.4 Nonwelded Repairs, such repairs are temporary and must be replaced at turnarounds or appropriate opportunities.
Is there any other standard or code that permits the use of such...
I have a 12" line that originally had a 19.5" long 8"-dia pipe welding on the bottom for a support. A new spool piece is fabbed for installation, but with a 6"-dia pipe for the support. The team has asked me to bless this. Although I do not think there is any problem, I would be only be...
