USCG Safety Alert: Inspection of Fuel Oil Quick-Closing Valves

Tuesday, February 01, 2011
QCV blocked utilizing a wooden block to hold the valve in the open position. Photos are courtesy of U.S. Coast Guard Sector New Orleans

U.S. Coast Guard Port State Control Officers (PSCOs) are discovering Fuel Oil Quick-Closing Valves (QCVs) intentionally blocked, modified, and poorly maintained preventing them from operating as designed during an emergency.

QCVs are positive shutoff valves on fuel oil systems serving to isolate fuel tanks in the event of a fire and also prevent “fueling” of a fire in circumstances where system piping and components are compromised. In some circumstances they could be the only means of securing the fuel to a flammable liquid fire. These valves are designed to be remotely operated. Inoperable QCVs create a very serious hazardous condition putting the vessel and its crew at greater risk in the event of a fire.

Blocking or disabling these valves is unacceptable under any circumstance. It is absolutely critical that they operate correctly, are maintained, and ready for use at all times. Proper routine maintenance, and in some cases approved modifications and / or replacement of components may be necessary to ensure reliability of the remote operator and closure of the valve.

Owners /operators, vessel engineers, PSCOs, Class society and other machinery space inspection personnel must fully understand the critical nature and importance of QCVs and associated systems. Crewmember knowledge of testing, operation, maintenance and repair, in addition to related documentation and required spare parts are essential elements to evaluate during an inspection. International regulations require that positive shutoff valves located outside the fuel tank be capable of being closed from a safe position from outside the space concerned.

The U.S. Coast Guard strongly recommends that owners /operators, vessel engineers, PSCOs, Class society and other machinery space inspection personnel ensure:
a) The QCV operating system is capable of remotely closing all valves as designed; some systems close valves sequentially and others simultaneously.
b) There is a maintenance plan in place including technical manuals containing diagrams and information that describe the system components, required spare parts, operation, maintenance and repair.
c) That all engine department personnel can identify the location of each valve, the respective remote closure and how to close them locally and remotely in an emergency.

Note: During Coast Guard PSC Exams, vessel engineers should be able to explain maintenance requirements of the system, and provide operational test and maintenance records. Engineers should be able to describe how test the valves, reset them after closure, and understand their operational importance. Vessels with inoperable QCVs may be subject to an operational control.

This safety alert is provided for informational purposes only and does not relieve any domestic or international safety, operational or material requirement. Developed by the Office of Foreign and Offshore Vessel Compliance Division (CG-5432), United States Coast Guard Headquarters, Washington, DC.

Maritime Today


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

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

Maritime Safety

Antietam, McCampbell Build Relationships at IFR 2016

Ticonderoga-class guided-missile cruiser USS Antietam (CG 54) and Arleigh Burke-class guided-missile destroyer USS McCampbell (DDG 85) arrived Feb. 4 in India

Hijacked Singaporean Ship Released in Nigeria

The crew of a Singapore-registered container vessel, Safmarine Kuramo, hijacked off the Nigerian Coast earlier this week, were released unharmed on Saturday (Feb

VPS Raises Concerns Over Revised Rules for Fuels

Veritas Petroleum Services (VPS) expressed reservations about some of the proposed revisions to the international ISO 8217 specifications of marine fuels. Areas

 
 
Maritime Security Maritime Standards Naval Architecture Offshore Oil Pod Propulsion Port Authority Salvage Ship Repair Shipbuilding / Vessel Construction 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: 0.0787 sec (13 req/sec)