Page 22: of Maritime Reporter Magazine (December 1986)
Gas is permitted to transport all of the liquefied gases and chemicals on the list approved for ships of this type by the International Maritime
Organization (IMO). These include ethene (ethylene), Propene (propyl- ene), Propane, propane/butane mix- ture, I + N-butane, anhydrous am- monia, vinylchloride monomer, bu- tene (butylene), butadiene, acetal- dehyde, diethyl ether, dimethylam- ine, propyleneoxide, and ethylen- eoxide/propyleneoxide mixture.
The six gas tanks have a total vol- ume of 7,178 cubic meters. They are designed for maximum overpressure of 5 bars (IMO) or 3.2 bars (USCG), and minimum temperature of — 104C. It is possible for two prod- ucts to be simultaneously trans- ported, refrigerated, and loaded or unloaded. Loading/unloading per- formance is 715 cubic meters per hour.
In order to further increase opera- tional flexibility, the Rio Gas is equipped with an insulated nickel- steel deck tank and a product evap- orator. This tank may concurrently transport a certain amount of gas similar to the product that is to be loaded at the next terminal. This gas may be washed into the cargo tanks as early as the ballast trip.
Thus, the cargo tanks will, when arriving at the next terminal, al- ready be prepared for the new cargo (temperature and pressure) without losing any time.
The five cylindrical nickel-steel cargo tanks are provided with the necessary internals as well as a re- sidual drain system. The low-tem- perature insulation consists of cryo- genic foam sprayed on in several layers. This achieves an insulating
Main engine MAN B&W
Auxiliary engines MAN B&W
CP propeller Schaffran
Steering gear Svendborg
Electric motors Schorch
Echo sounder & radar . . .Krupp-Atlas
Gyrocompass & autopilot Anschuetz
Satcom plant & wireless equipment Debeg
Main switchboard & distribution board Siemens
Communication systems .... Debeg
Tyfon (electric-driven) Zollner
Engine monitoring system .... Noris
Motor starters, battery chargers,
ECR & wheelhouse desks . Janssen
Centrifugal pumps Behrens
Gear pumps Dudek
Screw displacement pumps Bomemann
Deck auxiliary machines . . . .Hatlapa
Boiler plant GeKa/Saacke
Firefighting equipment .... Minimax
Freshwater evaporator . . .Alfa Laval
A/C system Novenco
Heat & fire protection & sound insulation Heidemann Isoliertechnik
Refrigerating systems . . . BBC-York
Cold storage room insulation . . . Kaefer Isoliertechnik
Cabling & lighting systems . . Siemens
Cargohandling cranes Hatlapa
Lifeboats E. Hatecke
Boat davits Davit
Gangway equipment ... Fr. Fassmer
Inflatable life rafts Autoflug
Deckhouse bulkheads . HW-Metallbau
Cooking installations . . AFM Bohnhoft/Edco
Laundry installations Edc
Sewage treatement . . . Hamworthy
Sanitary Triton Belco
Door locks, cabins & furniture hardware . . . Schwepper Beschlag
Upholstery & decoration Albert Homburg
Anchor equipment Dortmunder Kettenfabrik
Windows Wenner & Bettendorf
Inner deck coverings . . . Hans Strang
Paints Hempel's Schiffsfarben skin effect, inducing a considerable reduction of the thermal absorbtion in the cargo tanks.
The three LGI reliquefaction plants installed in the forward deck- house have been set up so as to form a cascade refrigeration cycle. They are similar to 15 plants delivered previously by LGI that have proved to be extremely reliable. Unloading of the product is carried out by means of deepwell pumps; two booster pumps provide for an addi- tional increase in pressure.
The power switchgear for the drives of the gas plant is installed in the electrical equipment room in the deckhouse. The plant is remotely controlled from the gas office in the crew deckhouse, where all of the important operating conditions are indicated. The modern outfit of the gas office includes, among other things, a cargo computer suitable for stability and logistic computa- tions.
An LGI inert gas plant installed aft provides for the inerting and flushing of the piping, units, and tanks. This plant consists of genera- tor, compressor, and drier. It oper- ates in the following modes: genera- tion of dry air having a dewpoint of up to — 75C at 6 bars; production of inert gas; and production of indus- trial nitrogen of the lowest C02 con- tent.
Early this year Aalborg Vaerft in
Denmark delivered the advanced refrigerated cargo ship Skulptor
Tomskij to V/O Sudoimport of the
U.S.S.R. Named for a famous Soviet sculptor, the 10,700 cubic meter ves- sel is the second of three ordered in 1984. The last ship in the series, the 2 ER OF 19865
We are proud to be officially selected winners of the Maritime Reporter's "Out- standing Oceangoing Ship Supplier's
We wish to thank all our customers world- wide for their confidence in our products and systems.
Our success is based upon teamwork and thorough understanding of the shipping industry's requirements. The close coopera- tion we have with our customers has en- sured our success with: • the STALECTRONIC range of control systems • the STALODUCT and STALICON con- tainer cooling systems • the STALOTERM container cooling system • the wide range of SCREW COMPRES-
SORS with capacities from 165 kW to over 3,000 kW • the water chillers, type VSM, for air-condi- tioning installed in over 130 ships, among them cruise vessels such as Birka Prin- cess, Jubilee, Royal Princess, Song of
America, Norway etc...
Worldwide contracting activities from our centralized design office in Sweden gives us direct feed-back of experience from thou- sands of plants and ensures conformity of plant design, materials, quality, spare parts and service, wherever you build your ships.
Whichever ship you plan to build, ask for our proposal.
Winning the cold war for you, worldwide
STAL Refrigeration AB, Marine dept., S-601 87 Norrkoping, Sweden. Phone + 46 11 21 40 00, Telex 64110 Frostal S, Telefax +46 11 10 23 42, Telegram FROSTAL.
Circle 254 on Reader Service Card 24
Akademik Zavarickiij, was also de- livered this year.
Built to U.S.S.R Register of Ship- ping classification, the Tomskij is designed as a multipurpose reefer capable of transporting fruit as well as frozen meat. The ship has large, open type cargo hatches that, with the necessary reinforcement of tank tops and decks, provide the capabil- ity of carrying both 40-foot and 20- foot containers in the cargo holds as well as on the weather deck.
The new reefer has an overall length of 453.4 feet, beam of 70.5 feet, depth of 43 feet, and draft (ba- nanas) of 23 feet. Propulsion is by a low-speed, two-stroke crosshead
B&W 6DKRN 67/170 marine diesel manufactured by Bryansk Engine
Works in the Soviet Union. The engine is fitted with a constant- pressure Brown Boveri turbocharg- ing system. Main engine output is 12,874 bhp at 123 rpm. It drives, via intermediate and propeller shafting, a four-bladed nickel/aluminum/ bronze propeller with fixed pitch. A
KaMeWa bow thruster has an out- put of 800 hp.
The electric supply is provided by four diesel generator units, each consisting of a 720-kw generator coupled to a B&W Holeby four- stroke 6T 23 LH-4 engine with an output of 1,033 bhp at 750 rpm.
Both the main and auxiliary engines are designed for burning heavy fuel with a viscosity of 380 cSt at 50C.
Under normal operating conditions at sea, two of the gensets are in ser- vice. A third is put into operation when the bow thruster is being used for maneuvering. A 100-kw emer- gency diesel generator set is also installed.
Steam for heating is produced by an Aalborg oil-fired boiler, type AQ- 12, also designed for burning heavy fuel. This boiler's capacity is 2,500 kilograms of steam per hour at a pressure of 7 bar. Steam production at sea is provided by a main engine exhaust gas boiler, Aalborg type
AQ-7, with built-in steam cabinet, and one four-chamber AQ-7 auxilia- ry engine exhaust gas boiler, (continued)
Main engine Bryansk/B&W
Propeller Stone Manganese
Bow thruster KaMeWa
Engine control/alarm system . Valmet
Sterntube bearings & seals . . . HDW
Anchors & chain . Thyssen Rheinstahl
Steering gear Frydenbo
Diesel generators .... B&W Holeby
Oil-fired & exhaust gas boilers Aalborg
Centrifuges, heaters & pumps Alfa-Laval
Alternators & motors .... Siemens
Main engine bridge control .... ASEA
Sewage plant Hamworthy
Deck machinery .... Rauma-Repola
Hatch covers . . . MacGregor-Navire
Deck cranes Liebherr
Air conditioning Nordisk
Piping & fittings Plesner
Ceiling & wall panels Dampa
Fire detection system Ginge
Maritime Reporter/Engineering News