SIGNAL VALVES IN MARINE DIESEL PLANTS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600060374-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 1
• Document Creation Date: December 22, 2016
• Document Release Date: August 17, 2011
• Sequence Number: 374
• Publication Date: October 8, 1954
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/08/18: CIA-RDP80-00809A000600060374-1
CLASSIFICATION SECRET
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
.1. N.. ..' .1. ? . .4... '.. W.1I.. .,. ...4.11..1.. ? ..I.
NO. OF ENCLS.
MISTED BELOW)
SUPPLEMENT TO Al-HUM
REPORT NO. I
50X1-HUM
1,. Modern marine diesel plants, especially those with high-speed interim! combustion
engines, a'e frequently equipped with a system of safety and signal devices
which in their aggregate are designed to guarantee damage free operation of
the assembly. Signal devices are designed to give warning in case of non-
nersal operating conditions of the assembly which threaten its safety.
_2. In same marine Diesel plants (and in the overwhelming majority of turbine
plants) so-called signal valves are installed. Theme valves are connected
with safety regulators which are intended to std the nn in by !Inns of the
fuel pump when the engine's revolutions exceed the normal revolutions by
10-15%. The signal valve gives a signal until the limit-switch begins to
operate (usually when revolutions incr sse by 5%). The signal may be a
bowling, Typhoon signal, etc. For example: Ow of the Caspian Shipping Line's
fleet unit is the Diesel-S1 ctro tanker "General psi Aslanov" with a net
tdeaage of 4500 tons. The Diesel-Slectrie plant of the tanbr consists of
four main Diesel-Generators (DD) which provide current for two propeller
electroiotors (T3D), which in turn cause the propeller screws to rotate. As
main Diesel generators on the tanker, standard Diesel generators built for
railroad trunk-line locomotives were installed. The model of the engine is
"D-500. The normal power of each of these engines is 1000 effective HP with
740 revolutions per minute. "D-50" engines are four-cycle, six-cylinder,
supercharge engines. These engines are equipped with safety regulators, which
cause the Diesel engine to coos to a stop by romans of the fuel pump when the
increase of revolutions of the Diesel over the normal rate represents 10-15%
that is, 850 revolutions per mirate. Signal valves which give signals even
until that cement when the safety regplator goes into action are connected
with the regulator. The signal to given when the number of revolutions over
the normal rate increases by about 5%, that is, whim the engine makes 780
revolutions per miarte. 50X1-HUM
- cam!
Sanitized Copy Approved for Release 2011/08/18: CIA-RDP80-00809A000600060374-1