CEA 4001 - Diesel Engine Driven Pumps

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67

be

visually

and

audibly

indicated

at

a

location

normally

attended

by

responsible

personnel.

9.8.6.3

The

visual

fault

indication

shall

be

yellow.

The

audible

signals

shall

have

signal

strength

of

at

least

75dB

and

shall

be

able

to

be

silenced.

9.8.6.4

A

lamp

test

for

checking

the

signal

lamps

shall

be

provided.

9.9 Diesel engine driven pumps

9.9.1 General

A

diesel

engine

shall

be

capable

of

operating

continuously

at

full

load

at

site

elevation

with

a

rated

output

in

accordance

with

ISO

3046-1:1986.

The

pump

shall

be

fully

operational

within

15

seconds

of

the

beginning

of

any

starting

sequence.

Horizontal

pumps

shall

have

a

direct

drive.

The

automatic

start

and

operation

of

the

pumpset

shall

not

depend

on

any

energy

sources

other

than

the engine

and

its

batteries.

9.9.2 Engines

The

engine

shall

be

capable

of

starting

at

an

engine

room

temperature

of

5°C.

It

shall

be

provided

with

a

governor

to

control

the

engine

speed

to

±

5%

of

its

rated

speed

under

normal

load conditions,

and

be

constructed

so

that

any

mechanical

device

fitted

to

the

engine

which

could

prevent

the engine

starting

automatically,

will

return

to

the

starting

position.

9.9.3 Cooling system

The

following

types

of

cooling

systems

are

acceptable.

a)

cooling

by

water

from

the

sprinkler

pump

directly

into

the

engine-cylinder

jackets

via

a

pressure

reducing

device

if

necessary,

in

accordance

with

the

manufacturer's

specification.

The

outlet

pipe

shall

be

open

so

that

the

discharge

water

is

visible;

b)

a

heat

exchanger,

where

the

water

is

taken

from

the

sprinkler

pump

via

a

pressure

reducing

device

if

necessary,

in

accordance

with

the

manufacturer's

specification.

The

outlet

pipe

shall

be

open

so

that

the

discharge

water

is

visible.

The

water

in

the

closed

circuit

shall

be

circulated

by

an auxiliary

pump

driven

by

the

engine.

If

the

auxiliary

pump

is

belt

driven,

there

shall

be

multiple belts

such

that

even

if

half

the

belts

are

broken,

the

remaining

belts

are

able

to

drive

the

pump.

The

capacity

of

the

closed

circuit

shall

conform

to

the

value

specified

by

the

engine

manufacturers;

c)

an

air

cooled

radiator

with

a

fan

multiple

belt

driven

from

the

engine.

If

half

the

belts

should break,

the

remaining

belts

shall

be

capable

of

driving

the

fan.

The

water

in

the

closed

circuit

shall be

circulated

by

an

auxiliary

pump

driven

by

the

engine.

If

the

auxiliary

pump

is

belt

driven,

there shall

be

multiple

belts

such

that

even

if

half

the

belts

are

broken,

the

remaining

belts

are

able

to drive

the

pump.

The

capacity

of

the

closed

circuit

shall

conform

to

the

value

specified

by

the engine

manufacturers;

d)

direct

air

cooling

of

the

engine

by

means

of

a

multiple

belt

driven

fan.

When

half

the

belts

are

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