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

Generators Siemens

CP propeller Schaffran

Gearbox Tacke

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

Satnav Magnavox

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

Compressors Hatlapa

Separators Westfali

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

Fans IG-Witt

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.

SKULPTOR TOMSKIJ

Aalborg

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

Award, 1986".

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.

REFRIGERATION

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

Switchboards LK

Sewage plant Hamworthy

Deck machinery .... Rauma-Repola

Hatch covers . . . MacGregor-Navire

Deck cranes Liebherr

Davits Schat

Incinerator Atlas

Air conditioning Nordisk

Piping & fittings Plesner

Ceiling & wall panels Dampa

Insulation Rockment

Fire detection system Ginge

Compressors Sabro

Coatings International

Maritime Reporter/Engineering News