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VOL 1, ISSUE 5
MAR 12, 2008
Maryland Marine Training E Newsletter
In This Issue
Mechanical Shaft Seals
Message from Admiral Thad Allen
Engineering Questions
Links
 
 
Join Our Mailing List
 
Wastsila ManeGuard shaft seal
Water Lubricated Shaft Seals
No More Packing
 
Starting with the M/V POINT ISABEL in 2007, new MMI vessels are being constructed with Mechanical Shaft Seals.  Packing is no longer needed and these seals are mostly maintenance free.
 
How does a Mechanical Seal work?
 
A mechanical shaft seal is created by the contact of a turning surface against a stationary surface. In the case of the Shaft Seal, the stationary surface is a silicon carbon seat held in contact against another silicon carbon rotor which turns with the shaft. The silicon carbon seat is attached to the boat by a flexible Elastometric bellows which, with the help of water pressure, produces a constant contact between seat and the rotor. These type of seals are unaffected by engine motion or vibrations. The result is a 100% watertight and regular maintenance-free seal.
 
What happens if the silicon carbon seal fails?
 
Inside the stationary flange, is an emergency inflatable seal which when filled with air, clamps around the shaft to seal off incoming water.  Located on the upper left hand (facing aft) side of the stationary flange is a small bayonet fitting that is used to connect a foot operated air pump. The small foot pump is found with your Critical Spares box.
 
Clamp the foot pump hose to the bayonet fitting and slowly pump air into the emergency seal.  The pressure gauge should quickly come up. Normal sealing pressure should be 20 to 30 psi on the gauge.
 
During this emergency operation, the shaft must remain stopped.  Use your chainfall to secure the shaft so it will not turn.  The emergency seal is not designed to withstand friction, thus the shaft must remain stationary.
 
Repairs to the mechanical shaft seal can only be made by qualified personnel.
 
If you have any questions on these seals, please check with vessel repair personnel.

 
USCG ADMIRAL THAD ALLEN, Commandant, USCG
The following is a directive sent out by Admiral Allen to all USCG personnel regarding relations with commercial Mariners.  I think you will find it interesting:

SUBJ: COMMANDANTS EXPECTATIONS FOR INTERACTION WITH MARITIME INDUSTRY

1.USCG ACTIVITIES INVOLVING U.S. AND FOREIGN PROFESSIONAL MARINERS AND MARITIME ORGANIZATIONS WILL BE CONDUCTED WITH UTMOST PROFESSIONALISM AND RESPECT. LICENSED AND DOCUMENTED MARINERS ARE PROFESSIONALS WHO SHARE OUR INTERESTS IN A SAFE, SECURE, AND ENVIRONMENTALLY COMPLIANT INDUSTRY.

ALEXANDER HAMILTONS CHARGE - TO KEEP IN MIND THAT OUR COUNTRYMEN ARE FREE MEN, AND AS SUCH, ARE IMPATIENT OF EVERYTHING THAT BEARS THE LEAST MARK OF A DOMINEERING SPIRIT - APPLIES AS MUCH TODAY AS IT DID IN 1790 AND EQUALLY TO INTERNATIONAL MARINERS AND OUR TRADING PARTNERS.

2. UNFORTUNATELY I HAVE RECEIVED REPORTS FROM HIGHLY RESPECTED PROFESSIONALS RECOUNTING COAST GUARD BOARDINGS, INSPECTIONS, AND INVESTIGATIONS NOT DISPLAYING PROFESSIONALISM. ADDITIONALLY, SOME HAVE SAID THEY LOST THE COMPLETE TRUST THEY ONCE HAD IN THE COAST GUARD AND ARE FEARFUL OF RETRIBUTION IF THEY CHALLENGE THE COAST GUARDS CONDUCT.

3. WE MUST CHANGE THIS PERCEPTION. AMERICAS POSITION IN THE GLOBAL ECONOMY, PUBLIC AND ENVIRONMENTAL SAFETY, AND POST 9/11 SECURITY ARE AT STAKE. THE NEED FOR MARITIME INDUSTRY-GOVERNMENT COOPERATION AND PARTNERSHIP HAS NEVER BEEN MORE IMPORTANT. THE COAST GUARDS OBLIGATION TO THE SAFETY AND SECURITY OF AMERICA IS SHARED BY THE MARITIME INDUSTRY AND ENHANCED BY WORKING COOPERATIVELY WITH INDUSTRY AT ALL LEVELS. OPENNESS AND TRANSPARENCY WILL BE THE HALLMARKS OF OUR MARITIME INTERACTION.

4. BOARDING TEAM MEMBERS, MARINE INSPECTORS, PORT STATE CONTROL EXAMINERS, FACILITY EXAMINERS AND THEIR SUPERVISORS SHALL ENCOURAGE OPEN COMMUNICATION WITH MARINERS AND OTHER MEMBERS OF INDUSTRY.

5. DISRUPTION IN THE NORMAL FLOW OF COMMERCE IMPACTS MANY PARTIES IN THE SUPPLY CHAIN. WE HAVE CLEARLY ESTABLISHED APPEAL PROCEDURES WHEN WE MAKE A DECISION THAT COULD HAVE NEGATIVE IMPACTS ON A LICENSED MARINER OR ON THE MARITIME INDUSTRY. THE EXERCISE OF APPEAL IS A RIGHT WE STRONGLY SUPPORT.

QUESTIONS, DIFFERENCES OF PROFESSIONAL OPINION, AND APPEALS ARE NORMAL AND IMPROVE THE CONDUCT OF BUSINESS. WE MUST BE AS ACCEPTING OF THESE AS PRAISE.

ATTEMPT TO RESOLVE PROBLEMS AT THE LOWEST LEVEL POSSIBLE AND BE RESOURCEFUL IN DOING SO.

6. IN INSTANCES WHEN DECISIONS ARE APPEALED, UNIT COMMANDERS AND SUPERVISORS MUST ACT WITH A NEUTRAL COMMON SENSE ATTITUDE; TIMELY RESOLUTION IS OF UTMOST IMPORTANCE TO FACILITATING LEGITIMATE COMMERCE.

7. AS COMMANDANT, I ACTIVELY ENGAGE THE CAPTAINS OF THE MARITIME INDUSTRY IN ROUND TABLE DISCUSSIONS TO UNCOVER WHAT IS GOOD AND BAD WITH OUR CURRENT PRACTICES SO IMPROVEMENTS CAN BE MADE. I EXPECT SIMILAR MARITIME INDUSTRY ENGAGEMENT AT EVERY LEVEL OF THE COAST GUARD FOLLOWED BY AGGRESSIVE ACTION TO ADDRESS PROBLEM AREAS.

FOLLOW ETHICS RULES AND STANDARDS OF CONDUCT IN YOUR INTERACTIONS.

8. AS SOON AS POSSIBLE, USCG SECTOR COMMANDERS SHALL SOLICIT CANDID FEEDBACK FROM THE INDIVIDUAL MARINERS, INDUSTRY ASSOCIATION REPS, AND FACILITY OPERATORS WHO HAVE A SIGNIFICANT STAKE IN MARINE SAFETY, SECURITY, AND STEWARDSHIP. THIS FEEDBACK SHALL IDENTIFY PENDING ISSUES NEEDING ACTION, BEST PRACTICES, AND RECOMMENDATIONS THAT CAN BE ACTED UPON. DISTRICTS SHALL HOLD A SECTOR CONFERENCE TO INCLUDE COTP/OCMI, PREVENTION AND RESPONSE REPS TO DISCUSS THE FEEDBACK, DETERMINE A COURSE OF ACTION FOR THOSE THAT MERIT ACTION AND THEN CLOSE THE LOOP WITH INDUSTRY ON ACTIONS TAKEN. NATIONAL LEVEL RECOMMENDATIONS SHALL BE VETTED THROUGH AREA COMMANDERS AND FORWARDED TO THE ASSISTANT COMMANDANT FOR MARINE SAFETY, SECURITY AND STEWARDSHIP

(CG-5) BY 1 JUNE 2008 FOR CONSIDERATION IN THE COAST GUARDS MARINE SAFETY IMPROVEMENT EFFORTS. MY GOAL IS TO PURGE THE PAST AND RESET FOR THE FUTURE.

OPEN COMMUNICATION, CRITICAL SELF-EXAMINATION, AND A WILLING TRANSPARENCY ARE HALLMARKS OF GREAT ORGANIZATIONS, INCLUDING THE COAST GUARD.

9. I ALSO EXPECT USCG SECTOR COMMANDERS AND CUTTER COMMANDING OFFICERS TO ENSURE BOARDING TEAMS, INSPECTORS, AND EXAMINERS PROVIDE THE UNITS SENIOR LEADER CONTACT INFORMATION IF ASKED TO VESSEL MASTERS, PORT ENGINEERS, AND FACILITY OPERATORS.

10. EFFECTIVE IMMEDIATELY, COAST GUARD REQUIREMENTS THAT LIMIT VESSEL MOVEMENT (SUCH AS NO SAIL ORDERS, MAJOR CG-835S, ACTIONS THAT WOULD DELAY ARRIVALS AND DEPARTURES) ARE TO BE AFFIRMED BY THE SECTOR CID AND REPORTED TO THE PREVENTION CHIEF, AS MANY ALREADY DO. AT A MINIMUM, A COAST GUARD SUPERVISOR SHALL ENGAGE, BY PHONE, RADIO, OR IN PERSON WITH THE MASTER, PORT ENGINEER, OR FACILITY MANAGER TO DISCUSS THE REQUIREMENTS AND EXPECTATIONS FOR RESOLUTION. AS SOON AS PRACTICABLE, USCG SECTOR COMMANDERS, MSU COMMANDING OFFICERS, AND CUTTER COMMANDING OFFICERS SHALL BE INFORMED OF ALL SUCH DISCUSSIONS.

INTERNET RELEASE AUTHORIZED.

ADMIRAL THAD ALLEN, COMMANDANT, SENDS.

Test the Old Chief Engineer
Marrerro Tow at Bayou Sorrel Lock by John Gonzales
Test your knowledge!..... email the correct answer to Gordie
 
1)   Shaft packing should be cut:
a.    at a diagonal with the length of the packing
b.    square perpendicular to the length of the packing
c.    with a interlocking "V" shape
d.    any of the above
 
2)   If a mechanical shaft seal on a modern vessel fails it can be sealed :
a.    by adding packing with a special tool to the outer edges of the stationary flange
b.    with heavy grease injected through the seal vent
c.    with up to 30 psi air pumped into the emergency seal bayonet fitting with the shaft stopped
d.    with several plastic garbage bags wrapped around the shaft and secured with duct tape
 

Dates to Remember                        MAR 2008

 

Tankerman School- Two Rivers     MAR 10 - MAR 15

Wheelmen's Seminar                      MAR 18 - MAR 19

Wheelmen's Seminar                      APR 1 - APR 2

Tankerman School- Two Rivers     APR 14 - APR 19

Wheelmen's Seminar                      APR 15 - APR 16

 
WHEELMEN...Last call for WHEELMEN'S Seminar session reservation.  Call or email Diana as soon as possible if you plan to attend the April sessions!
A quick note....do not wait until the last month before expiration on your license and tankerman ticket renewals.  Though the USCG REC office in Houston has done a good job in completing renewal requests, there are often unseen delays that can hold up a renewal for months.
 
To be safe , please apply at least 6 months prior to you expiration date.  Don't be caught short without the ticket to your livelihood.
 
Answers to this weeks questions......1.--b  2.--c
 
Sincerely,
GORDIE KEENAN
HIGMAN MARINE SERVICES, Inc.