New PDF release: Guide to Ship Repair Estimates

By Don Butler DTI Combined first class Engineers Certificate of competency for steam ships and motor ships.Chartered Engineer (C. Eng)Fellow of the Institute of Marine Engineers (F.I.Mar.E)Member of Society of Consulting Marine Engineers (M.C.M.S)

ISBN-10: 0750648341

ISBN-13: 9780750648349

Don Butler has compiled a useful checklist of the man-hours required for send fix estimates. All ships needs to endure ordinary dry-docking for exam via a 3rd occasion surveyor; it is a needed requirement for ships which ply their exchange on both worldwide or coastal region foundation. This dry-docking interval is mostly used as a time to hold out recognized harm upkeep, cleansing and portray, improvements and common equipment overhauls. the writer presents estimates for all events which could come up, allowing the fix superintendent to expect bills, and accordingly to arrange a correct fix specification good prematurely, for factor to the repairer. * Produced for technical superintendents of send vendors and send managers; outlines the style during which send fix businesses collect quotations. * made of man-hours instead of financial worth, to help long term pricing; books of 'prices purely' can have no long term relevance, while time in man-hours should be universally appropriate and tougher. * Assists technical superintendents in compiling fix requirements with pricing process, to allow them to building up costings for his or her deliberate fix classes. * the one booklet of its sort, and as a result a must have for all fix superintendents of send vendors and send managers"

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Assume as 60% the rate of top overhaul rate. 2 Cylinder liners – 1 Withdrawing of cylinder liner, cleaning exposed areas as far as accessible, installing of new, owner’s supplied liner and rubber seals. Cylinder bore (mm) 500 550 600 650 700 750 800 850 900 950 1000 Man-hours per cylinder 60 62 67 72 77 82 90 97 107 120 135 Note: Assuming that cylinder head, piston and piston rod are already removed as part of the top or complete overhaul. 3 Bearing survey – 1 Opening up for inspection, exposing both halves, cleaning, calibrating and presenting for survey.

12 Sea valves Opening up hand-operated, globe and gate valve for in situ overhaul by disconnecting and removing cover, spindle and gland, cleaning all exposed parts, hand grinding of globe valve, light hand scraping of gate valve, testing bedding, painting internal exposed areas and reassembling with new cover joint and repacking gland with conventional soft packing. (a) Butterfly valve: remove, clean, check, testing bedding of seals, paint internal exposed areas and refit; excluding operating gear.

The limit will be given by the shipyard and is dependent upon the size of the repair yard and the vessel. Assume the limit to be approximately 5 metric tonnes. Shipowner’s superintendents should be aware of the methods used by the shipyards of calculating steel weights, and this is illustrated below. FLAT PLATE L × W × Th × SG = Weight in kg ANGLE L × (W1 + W2) × Th × SG = Weight in kg Flat steel plate ● For flat steel plates, measure the length in metres, the width in metres and the plate thickness in millimetres.

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Guide to Ship Repair Estimates by Don Butler DTI Combined first class Engineers Certificate of competency for steam ships and motor ships.Chartered Engineer (C. Eng)Fellow of the Institute of Marine Engineers (F.I.Mar.E)Member of Society of Consulting Marine Engineers (M.C.M.S)


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