Page 42: of Maritime Reporter Magazine (April 1972)

Cargo Hold Ventilation

Subject Of Bulletin

Available From SNAME

Although cargo transport via con- tainership or barge-carrying vessel is vogue, a substantial portion of all cargoes still moves via breakbulk car- rier. Inside their holds, forklift trucks operating on gasoline or liquefied petroleum gas (LPG) during cargo handling operations in port have often created the need for supple- mentary ventilation to protect per- sonnel from the dangers of carbon monoxide emissions.

The Society of Naval Architects and Marine Engineers Technical and

Research Bulletin #4-14, "Guide for

Supplementary Ventilation in a Ship's

Cargo Hold When Using Internal

Combustion Engines," endeavors to provide a technical basis from which ship operators and stevedoring firms can determine what additional ven- tilation, if any, is required over the ship's normal ventilation. The essence of this bulletin is a simple nomograph for calculating the cubic-feet-per- minute ventilation requirements for each truck in operation when the truck full load engine speed, engine displacement and carbon monoxide emission rate are known. Typical forklift truck engine data and emis- sion rates are given.

Tests to determine carbon monox- ide emission rates, average engine speed during actual cargo handling operations, and natural ventilation rates in cargo hold with an open hatch were conducted to develop this nomo- graph and are described in the bulletin.

We take pride in working around the clock to repair your ship with expediency, craftsmanship and minimum cost.

ARTHUR E. FARR, Corporate Vice President

NORTHWEST MARINE

IRON WORKS

SWAN ISLAND SHIPYARD

Portland 228-8222

ROYAL'S 208 VALUE

THE

UNDERPRICED

OUTPERFORMER

Royal's 208 butterfly is superior to any comparably priced cryogenic and special fluid handling valve. The proof is in the performance. The 208 — with exclusive thermetic sealing and eccentric disc rotation — provides leak-tight shutoff from -423°F to +200°F. No seal scuffing or deformation. 150 lb. and 300 lb.

ANS pressure ratings. And you can choose from sizes 2" through 48". Specify Royal's 208. It means more valve for the money. more information, write: 2040 East Dyer Road, Santa Ana,

California 92705. Or call collect: (714) 540-3210.

INDUSTRIES

ENGINEERED PRODUCTS DIVISION

Raytheon Company has established a new sales and service headquarters to serve its marine electronic equip- ment customers in northern Califor- nia and Nevada.

The facility at 1707 64th Street,

Emeryville, Calif., will stock Ray- theon's full line of .radars, radiotele- phones and antennas, direction find- ers, loran receivers, and Fathometer depth sounders. A complete inventory of replacement parts will also be car- ried to serve more than 30 dealers in the area.

John H. DifTenderfer has been named regional manager. He will con- tinue to serve as manager of Raythe- on Service Company's facility in

Emeryville, which provides installa- tion and service support for electronic equipment aboard commercial and

Government vessels.

Prior to his Raytheon Service

Company appointment, Mr. Dif- fenderfer was a partner in Mar- tronics Company, a retail dealership specializing in marine electronic sales and service.

The company also announced that

Lee Associates, Orlando, Fla., has been appointed southeastern agent for

Raytheon Company's complete line of oceanographic instrumentation. Lee will handle the firm's products in the states of North Carolina, South Caro- lina, Tennessee, Georgia, Alabama, and Florida. 44 Maritime Reporter/Engineering News

MANUFACTURER: HESSE-ERSTED

SIZE: 12" x 14" Spur Geared

CHAIN SIZE: 2%>"

CAPACITY - WILDCAT: 65,216 lbs. at 33 fpm

GYPSIES: 16,000 lbs.

VESSELS: T2-SE-A2, T3-S2-A1 2 Available from Stock

EQUIPMENT

COMPANY 3500 ELM AVENUE, PORTSMOUTH, VA. 23704 rj PHONE 703 399-4071 p

Panel 0-31 (Cargo Handling) of

The Society of Naval Architects and

Marine Engineers Technical and Re- search Program established the test- ing program with the cooperation of the National Bureau of Standards, the Maritime College of the State

L'niversity of New York and nu- merous industrial organizations, which led to the preparation of the guide.

The nomograph represents a consen- sus of the opinion of the technical experts composing the panel, which includes ship operators, terminal oper- ators, naval architects, Federal Gov- ernment representatives and others.

Such widespread industry representa- tion is typical of the Society's Tech- nical and Research Program.

The new T&R Bulletin #4-14 is available through The Society of Na- val Architects and Marine Engineers, 74 Trinity Place, New York, N.Y. 10006, at $3.50 per copy. Members of the Society may obtain this bulletin at a price of $3 per copy, which in- cludes postage via third class mail in the United States and as "printed matter" in all other countries. Ship- ments will be insured at an additional charge only if requested.

Raytheon Establishes

West Coast Facility And

Names Agent In South

John H. Diffenderfer