Power Track Strength Concerns

Friday, August 27, 1999
When the Snorkels were first delivered, there was concern the power track used to hold the hydraulic hoses wasn't strong enough. Norshipco is so oriented to steel components, they were afraid the composite Snorkel power tracks wouldn't hold up. They were wrong. In fact, the material used in them tolerates the wear of grit better than metal power tracks and isn't susceptible to salt water corrosion. And, if a link is broken, it can be individually replaced without disassembling the entire system. There is also a metal cover over the tracks protecting them from welding splatter; and if they're dented, the cover can easily be straightened in Norshipco's shop. Another feature appreciated at the operational level is the design of the Snorkel hydraulic system. The layout of the Norshipco facility requires some machines be stored about a mile from the dry-dock where they're used. When a machine is called into service, it must be driven down to the dock. With other machines, workers found the hydraulic oil overheated while driving the machines the extra mile. The Snorkel booms use variable displacement, load sensing hydraulic pumps, similar to the pumps used in aircraft, which compensate for pressure and flow. They're reliable, lightweight and don't generate unnecessary heat. Some machines use fixed displacement gear pumps continuously delivering full pressure and full flow, varying only with engine speed. Since only a portion is used to operate a particular function, the remainder of the oil flow and pressure returns to the hydraulic tank, creating heat, wasting energy and substantially reducing operating efficiency. Larger tanks are needed to hold the fluid in systems using fixed displacement pumps; and in some cases, a heat exchanger may be required to dissipate excess heat.

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter July 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Offshore

Swiber Applies for Judicial Management Instead of Liquidation

Singapore oilfield services company Swiber Holdings Ltd said on Friday it has applied to place itself under judicial management instead of liquidation.   Swiber

US Oil Drillers Add Rigs for 5th Week in a Row

U.S. drillers this week added oil rigs for a fifth consecutive week, Baker Hughes Inc said on Friday, but the oilfield services provider and some analysts cast

Det Norske to Restore Production at Alvheim after Leak

Norwegian oil firm Det norske said it expected to reach full production at its Alvheim FPSO (floating storage, offloading and producing unit) overnight after a leak,

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Navigation Pipelines Port Authority Ship Electronics Ship Repair Ship Simulators Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0792 sec (13 req/sec)