Last updateMon, 30 Nov 2015 5pm


For Want of a Nail: Engineering Process Safety

For Want of a Nail“For want of a nail, the kingdom was lost,” is the final line of an old proverb that reminds us that seemingly unimportant acts or omissions can have grave consequences. An infamous example of this exists in one of America’s most tragic incidents, the 1986 Challenger shuttle disaster.

The Challenger exploded 73 seconds into its launch, killing all seven crew members. The investigation revealed that the disintegration of the entire vehicle began after an O-ring seal in its right solid rocket booster (SRB) failed at liftoff. The O-ring failure caused a breach in the SRB joint, allowing pressurized hot gas from within the solid rocket motor to reach outside and impinge upon the adjacent SRB attachment hardware and external fuel tank. This led to the separation of the right-hand SRB’s aft attachment and the structural failure of the external tank. Aerodynamic forces promptly broke up the orbiter.

New, Surplus, Repaired or Rebuilt?

15 spr maintenance2If you’ve been around valves for a while, you’ve likely heard the term “new surplus,” plus a few other saltier descriptions for valves that are offered for sale. A joke in the industry concerning the phrase “new surplus valves” goes like this: In describing his valve product, the shifty valve salesman said it is new surplus: “surplus to me and new to you.”

Tightening Bolts Can Help Tighten Budgets

15 wnt maintenanceIn highly-corrosive chemical and refining applications where in-line and atmospheric sealing is critical, sleeved plug valves provide essential defense against leaks and fugitive emissions. Because they typically face harsh conditions, repair or replacement is an important consideration. However, before those steps have to be taken, there’s a simple step to make them last longer: tightening the bolts.

Emergency Repair in Pipelines

14 fall emergency 1Decades of innovation and ingenuity in the pipeline valve manufacturing industry have resulted in dozens of designs incorporating multiple body parts, top and bottom entry designs and sophisticated seat sealant systems. These simple valve designs make emergency sealing and repair safer and easier for technicians.

Standards, Safety, Training Top Topics at Meeting

14 sum MRTwenty-five years ago, the member companies of the Valve Manufacturers Association of America (VMA) saw a need to promote both safety and quality in valve and actuator repair. As a result, the service operations of VMA members banded together to create the Valve Repair Council (VRC). As part of its mandate to educate manufacturers, rebuilders and customers on the importance of proper service and to provide a forum for an exchange of information, the VRC sponsors events such as this year’s meeting and exhibition in Houston, which was June 5-6.




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