Mai Engine Bedplate Check

pdfcrowd.comopen in browser PRO version Are you a developer? Try out the HTML to PDF API

Search Marine Insight

Facebook 1290 Twitter Google+ LinkedIn Pinterest

You are here: Home / Marine World / Marine News / Headline

Important Things To Check In Ships Engine Bedplate

JUNE 16, 2015 BY ANISH

Forums Photos Videos Premium eBooks Free eBooks

HOME NEWS MARINE TECH NAVIGATION SAFETY CAREER LIFE AT SEA

NAVAL ARCH PIRACY REPORTS


A bedplate is the lowermost portion of a marine engine (2 and 4 stroke), which supports the engine structure

and is also one of the most loaded constructional parts of the engine. For large engines, the bedplate is

fabricated in parts with flat bottom type construction having high surface finish. The bedplate is later

arranged together during installation in large engines, whereas for smaller engines the bedplate is fully

casted.

For large bedplates the material used can be cast or prefabricated steel or a mixture of both. The important

requirement for large engine bedplate is to use material with low carbon steel with maximum carbon content

of 0.23%. For small bedplate, cast iron with internal vibration damping characteristics is used, which

reduces the frequency of cracks in the bedplate. The main components of any bedplate are longitudinal and

PSE Decree vs. MathewsDynamic Brace Height: PSE tests our bow against the Mathews No-Cam

PSEVIDEO


cross girders.

Buy This Book Now! Get More Information

A Guide to 2-Stroke Marine Engineering Components

Get vital information on design and construction of important marine

engine parts. Learn step-by-step procedures for essential inspections and

calibrations.

The important functions of bedplate are:

To support the static load of stationary engine frame and blocks

To support the dynamic load of the running gear

To support the crankshaft and hold it in perfect alignment

To distribute the static and dynamic load generated by running engine onto the ship structure

To collect the crankcase lube oil and transfer it to the sump tank from where the lube oil pump can take

suction

To fasten the engine to the tank top transmitting propeller thrust to the hull structure

To contribute to the hull strength of the ship at engine room bottom structure

It is important to keep a regular check on the bedplate as its the foundation of the marine engine. The


inspection of bedplate is also included in the planned management system of engine.


Following checks to be carried on the bedplate during inspection:

Cracks: Cracks is the most common problem that occurs on the bedplate structure. Following areas to be

carefully checked for cracks:

Welding portion which joins the transverse girders to the longitudinal girders

Under the bearing pockets where cracks can emerge to be radial or follow the line of the pocket which

holds the bearing

Radially at tie bolt and frame bolt holes

Around lightening holes provided in the bedplates and girders

At the base of main bearing keeps


Faulty welding: It is to be checked on newly delivered engine or if any welding repairs are carried out in


the recent past

Faulty casting It is to be checked on newly delivered engine with casting construction

Corrosion: As the bedplate is the bottom structure fitted in the bilge section of the engine room, it comes in

contact with various fluids such as oil, water etc. and therefore is prone to corrosion. A close check should

be made for identifying corrosion.

Loose Frames: The bedplate is held together with A frame and entablature of the engine by means of tie

rod. Check the tie rod is tightened and there is no loose portion between the frame and bedplate.

Faulty Holding Down Bolts: The holding down bolts keeps the bedplate in position with the bottom

structure of the ship. Check for loose holding down bolts and tighten as per the manual if found loose. Also,

check for shearing and fretting on the holding down bolts.

Oil leakages: The bedplate is also responsible to collect the lube oil and transfer it to engine sump. Check

for any oil leakage from the bedplate or the joint between the bedplate and the frame.

Ships engineers are responsible to ensure that marine engine bedplate is inspected at regular intervals of

time and all faults are identified and repaired at the earliest. Failing to do so will result in heavy vibrations,

misalignment of crankshaft, and reduction in engine efficiency and failure of engine components.


Like It? Share It Share on Facebook Share on Twitter

Over to you..

Do you know about any other important points to be noted while checking engine room bed plate?

Lets know in the comments below.

Report an Error

Car Batteries -Portland

Duracell Automotive BatteriesFree Battery Installation Call us


Enter Your Best Email

About AnishAn ardent sailor and a techie, Anish Wankhede has voyaged on a number of ships as a marine

engineer officer. He loves multitasking, networking, and troubleshooting. He is the one behind the

unique creativity and aesthetics at Marine Insight.

Get Free News Updates Daily

Join 40000+ maritime professionals who receive daily newsletters, offers and more..

SUBSCRIBE NOW!

WHAT TO READ NEXT


YANMAR AmericaAnnounces First EPA

Compliant Commercial

10 Ways to Ensure SafeSlow Steaming Operationof Old Marine Propulsion

Whats The Criteria ForReuse or Replacement of

Auxiliary Engine

8 Things MarineEngineers Must Know

About Starting Air System

Related Posts From Marine Insight

Hurry Up Before ThisShocking Video Gets

Banned!Anyone can make $600,000 in 30

days!

A Surprisingly Easy TrickTo Get Rich

Click to f ind out how to earn a six-

f igure salary w orking online

The Shortest Path toMillionaire's Life

Watch the video!

Rich People Pay a Lot toBan This Video!

Learn how to make $600,000 a

month!


Marine Engine Engines Connecting Rod OnShips?

On Ship

COMMENTS

kienkuma Richard Abrakasa says

June 16, 2015 at 10:50 pm

Very educative!

LEAVE A REPLY

Name *

Email *


POST COMMENT

Comment

Ask your queries and get answered by experts. Share your knowledge

and experience with other maritime professionals. Grow your

network!!

Sign Up

Marine Insight Forums | Join the Community

DOWNLOAD OUR APP


CHECKOUT OUR PREMIUM EBOOKS

LATEST NEWS

Current Issues And New Regulations Concerning The On-Board BlendingOf Fuels

Shop Now > Shop Now > Shop Now > Shop Now > Shop Now > Shop Now >

Shop Now > Shop Now > Shop Now >


ITF And SRI Chart A Course On Maritime Human Rights

First IMO Maritime Ambassadors Appointed From China And Haiti

Marine Fuel Price Slump Set To Deepen As Glut Grows

Video: Google Maps The Ocean With Underwater Street View

Read more latest news...

10 Free eBooks for Seafarers

100000+ copies already downloaded!

Get Your Copy Now!!


Enter your best email

DOWNLOAD NOW!

We respect your privacy and have Zero Tolerance for spam. Your Information is Safe & Secure w ith us.

LATEST FORUM POSTS

We are a ship builder involved with the design of a new vessel. c

I have Thai CDC having 9 months exp as deck cadet. I have want to

What is the safe limiting angle for rudder movement on port and s

I am countinuously reading about the age limit to joining merchan

This post is lengthy (apologies, i had to be clear). Please reply

Ask Your Question In Forums Now!!


EXPERT AUTHORS


POPULAR POSTS

Panama Canal Expansion Begins Filling of New Locks

Video: Worlds First Maintenance Support Walk to Work Vessel

54% Of Tankers Comply With 1 July 2015 ECDIS Mandate

Shipping Companies And Masters Prosecuted For Marine Pollution in GreatBarrier Reef


Video: Shell Arctic Drilling Rig Departs Seattle Surrounded By Protesters

China Gathers Multitude Of Evidence In Ship Sinking Probe

Mitsubishi Corporation and Seamax Partners Reach Final Close in ContainerShipping Fund

Californian Oil Spill Clean-Up Costs Exceed $60 Million

New IACS Unified Requirement (UR) Further Improves Safety Of Large ContainerShips

WA Leads The Way With Vessel Biosecurity Initiative


MARITIME EVENTS

View all Events >>

FIND US HERE

Know More

Seawork International 2015

16th June, Southampton

Know More

8th Offshore Support

Vessels Summit

17th June, Aberdeen, UK

Know More

Operating Specialist Wind

Vessels Summit

17th June, Aberdeen, UK


Join Merchant Navy

12 Famous Myths About Merchant Navy People Have

8 Myths To Be Cleared Up Before Joining Merchant Navy

10 Common Questions Asked by Aspiring Merchant Navy Professionals

Physical Fitness and Medical Requirements to Join Merchant Navy

A Guide to Merchant Navy Ranks

How to become a Marine Engineer after doing Mechanical Engineering?

Maritime Career Guidance

How To Know If A Shipping Company Is Worth Working For?

9 Successful Techniques to Get Promoted On Ships


The Urgent Need of Proper Vocational Guidance for Maritime Careers

How to do MBA in Shipping?

How to Quit Sea Life and Settle Ashore?

How Should Deck Cadets and Junior Engineers Tackle Unemployment?

Maritime Resources

21 Websites to Find Maritime Jobs Online

10 Resources For Seafarers To Know Everything About The Deadly Ebola Virus Disease

10 Free Mobile Apps Seafarers Must Have

10 Important Organizations Seafarers Can Contact For Help


10 Important Points of Useful Information For Seafarers

28 Online Resources for Maritime Piracy and Somali Pirates

Life At Sea

Seafarers Wife : The Woman Behind A Successful Life At Sea

Pros and Cons Of Internet Onboard Ships: A Sailors Perspective

How to Cope With Emergencies at Home While You Are Sailing?

7 Problems Seafarers Can Face While Traveling to Foreign Land

10 Professional Mistakes Seafarers Should Never Make Onboard Ships

12 Things a Smart Mariner Would Do Before Joining a Ship

Recommended Books

Marine Engineering Books


Naval Architecture Books

Nautical Science Books

Port Management Books

Maritime Convention Books

Maritime & Somali Piracy Books

Safety At Sea

7 Dangerous Diseases/Disorders Seafarers Should Be Aware Of

10 Extremely Dangerous Engine Room Accidents On Ships

10 Types of Personal Injuries Seafarers Must Be Aware Of

Mai Engine Bedplate Check

Documents

Transcript of Mai Engine Bedplate Check