Fastener Commonality Deep Dive Yields Navy Supply System Efficiencies

Joseph Battista, NSWCCD-SSES Public Affairs
Thursday, April 18, 2013
Credit: Naval Surface Warfare Center

Naval Sea Systems Command completed a fleet-wide fastener study, identifying and recommending the removal of thousands of fasteners from the Navy supply system.

The 16-week supply system review identified 108,000 dormant fasteners-fasteners with no contract, requisition or maintenance history in the past five years-and 3,200 duplicate fasteners where two or more identical fasteners had different stock numbers.

The NAVSEA Commonality Project management team led the study, collaborating with in-service engineering agents, technical warrant holders, program offices, shipyards, shipbuilders, the Defense Logistics Agency and original equipment manufacturers. 

"This fastener deep dive focused on basically anything used to secure two things together on a ship," said Bill Moss, Commonality Project Management Team lead with NSWC Carderock's Ship Systems Engineering Station (SSES) in Philadelphia. "This includes all the nuts, bolts, rivets, and pins."

John Sofia leads the NAVSEA commonality program established in 2007 to find cross-platform cost savings and avoidance opportunities. "The program has taken a systems level approach to define opportunities which the Navy may be able to take advantage," said Sofia, "The commonality fastener deep dive is an example of using a supply chain approach to identify potential savings."

The Defense Logistics Agency documents the cost per year to maintain a stock number between $200 and $500 each, according to the Tessa Kashuba, a member of the Commonality Project management team.

"The savings may seem small," but when taken in context of number of dormant and duplicate [stock numbers], the cost escalates rapidly," said Kashuba, "However, we have to be careful when we remove an item because we don't want to eliminate something that's still needed. For example, we may discover a fastener that hasn't been ordered in a number of years, but then find out a ship is coming into an availability period that may require that fastener."

Another focus of the study was to work with shipbuilders and shipyards to familiarize them with NAVSEA's Virtual Shelf. Virtual Shelf is an electronic repository of standard architectures, design guidelines, specifications and parts lists for ship systems.

"Shipbuilders may go directly to vendors to purchase fasteners during ship construction," said Dana Melvin, Commonality Project team member. "The fasteners they purchase may not have a [stock number], and must be added into the system if there isn't a comparable fastener available. Our goal is to get the builders to use fasteners that already have [stock numbers]."

According to Fredrick Kachele, Metallurgy and Fasteners Branch subject matter expert, shipyards machine their own fasteners, or do a local small-quantity purchase, when they cannot find a [stock number] for the fastener they need. Both options are very expensive, but NAVSEA's Virtual Shelf can help users find required, qualified equipment at lowest total ownership cost.

"The Virtual Shelf eliminates hours of fruitless searches for a part," said Kachele. "It leads the searcher to a comparable fastener that will meet their needs. Prior to this, there was no reliable way to find a replacement part without knowing that NSN.  New items purchased outside of the Virtual Shelf may need to go through qualification testing, which costs the Navy money."

For more information about the Commonality Program, visit acc.dau.mil/commonality.

The Ship Systems Engineering Station, Philadelphia, is a major component of Naval Surface Warfare Center Carderock Division and a NAVSEA field activity. It is the Navy's principal test and evaluation station and in-service engineering agent for all hull, mechanical and electrical ship systems and equipment and has the capability to test and engineer the full range of shipboard systems and equipment from full-scale propulsion systems to digital controls and electric power systems.
 

Maritime Reporter January 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Ship Repair & Conversion

Imabari to Construct Newbuilding Dry Dock

In order to accommodate construction of Ultra-Large newbuilding vessels including recently secured 20,000TEU Mega container ships (about 400m in length and about 59m breadth),

Maintenance Woes Led to Digby Ferry Grounding

Maintenance deficiencies and inadequate emergency procedures led to November 2013 grounding of Princess of Acadia in Digby, Nova Scotia    Maintenance deficiencies

Safeguarding Maritime Power Connections

KIRK interlocking products provide safe electrical access during cold ironing, ensuring that ship power cables are properly coupled to shore power junction boxes before energizing.

Navy

ThyssenKrupp: Submarine Unit Not For Sale

German industrial group ThyssenKrupp is not in talks to sell its submarine unit nor is it in talks to sell its stainless steel unit VDM, its chief executive said on Friday.

SECNAV Completes Visit to Paraguay

Secretary of the Navy (SECNAV) Ray Mabus completed a visit to Paraguay Jan. 29 during which he met with Republic of Paraguay President Horacio Cartes to discuss

Australia Gives Landing Craft to the Philippines

The Australian Government will gift two recently-decommissioned Landing Craft Heavy vessels, including a package of spare parts, to the Philippines Government,

Marine Equipment

Imabari Bags Order for 11 ULCCs

Imabari Shipbuilding Co., Ltd. (Imabari), with the cooperation of Marubeni Corporation, has secured newbuilding order for eleven (11) units of 20,000TEU Ultra-Large Container Carriers,

Kongsberg Expands Louisiana Office, Training Facility

Kongsberg Maritime has purchased approximately 5.2 acres for new construction on an 82,980 sq ft office and training facility. Construction on the James Business

First Container for LNG Hybrid Barge

The HUMMEL (bumblebee) LNG Hybrid Barge will enable Becker Marine Systems to supply low-emission power to cruise ships lying at port in Hamburg. The first container

 
 
Maritime Careers / Shipboard Positions Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Ship Electronics Ship Repair Ship Simulators Sonar
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1443 sec (7 req/sec)