Fisher Station Instructions Manuals & Guides

Instruction Manual
D103691X012

June 2017

Station Instructions

1. STATION DESCRIPTION

1.1 Description

This pressure reduction and/or metering and/or shutoff
station is a group of several pressurized pieces of
equipment that are assembled to form an integrated
and functional whole.

It is designed so that the assembled elements are
adaptable and reliable under the intended service
conditions, become integrated correctly, and are
assembled properly.

The standard pressurized pieces of equipment are in
conformity with directive PED 2014/68/UE
(if Pu > 0.5 bar).

This station ensures one or more of the following

functions: ltering, pressure reduction, metering,

safety pressure, electrical insulation, shutoff, etc.

The uid used is gas (natural gas, compressed air,

nitrogen, etc.).

1.2 Station Design

The station design is either provided in the appendix,
or it can be consulted in the “Pressure reduction and
pressure reduction metering stations” catalogue for
applicable stations. It indicates clearly the types of
upstream and downstream connections and the limits
of the station.

1.3 List of Principal Elements

See station design.

1.4 Essential Admissible Limits

2. WARNINGS

WARNING

!

Upon receipt:

Verify that the equipment has not been
damaged during transport or handling.
Damage to the packaging must be
reported to the carrier.

Verify that the equipment does indeed
correspond to the order.

Before startup:

The user must ensure that the
delivery network of the gas supplier
has protection to prevent exceeding
of the admissible limits of the
station (upstream PMS and ambient
temperature range).

The user must verify that the uid
used is a clean gas (upstream ltration

necessary if not present in the station),
dry, and non corrosive.

The user must verify that all the
elements located upstream of the station
have been perfectly cleaned, dried, and
are free of dust, welding specks, etc.,
before startup.

Verify the proper functioning of the
elements constituting the station (see
corresponding notes).

Installation in an area that is subject to
vibrations may result in an undesirable
closing of the safety valve(s).

The essential admissible limits are indicated on the
design.

In general:

Upstream PMS = Pu

Downstream PMS = Pd (0.5 bar if Pd ≤ 0.4 bar).

The ambient temperature range is -20°/60°C.

Avoid subjecting the station to shock.

Provide for maintenance of the
station protection as needed for its
environment.

The station must normally not be

subjected to the action of ames.

Comply with the handling conditions.

Check contacting adjacent pipes to
prevent any axial cutting force, or a
bending torque.

Station Instructions

The user must not make any changes
to the constitution of the station, or
intervene on its structure (perforation,
welding, grinding, etc.).

This assembly is not designed to
withstand earthquakes.

This assembly is not designed to
withstand lightning. Provide adequate
protection.

It is absolutely necessary to connect the
equipotential connection of the station
to the ground.

If necessary, the user must provide
ducts for vents, and provide protection
against entering water.

3. STORAGE INSTRUCTIONS

The connection elements for the station are delivered
in closed form.

Storage position: see the indications on the packaging
(if none, store in the operating position).

Storage time without protection under delivery
conditions: maximum 15 calendar days.

6. STARTUP

CAUTION

Any intervention on the equipment must

be carried out by competent, certied,

and trained persons.

Reminder: In general, any manoeuvres
on valves, cocks, etc., must be carried
out slowly.

The network must receive gas before
setting and startup. The output of gas
must be carried out by personnel who
have adequate control equipment.

The safety device settings must be

veried before startup.

The startup is carried out component­by-component in the direction of the gas

ow: refer to the station design and to

notes for each component.

Before opening the sectioning device
upstream of the station, make sure that
the downstream network conditions are
completely safe for receiving gas.

4. HANDLING / LIFTING

Handle by means of slings with the lifting rings
included in the delivery, or with a forklift.

The weight of the station is reported on the delivery slip.

A station that is delivered vertically must not be
inclined by more than 15° during its handling.

5. INSTALLATION / MOUNTING

CAUTION

The connection of the station to the
inlet and outlet pipes on the site must

be carried out and veried by qualied
personnel, according to qualication

procedures pursuant to the applicable
regulations and/or the procedures.

During the upstream and downstream
connection process, verify that the
contact with pipes causes no stress on
the pipes.

7. MAINTENANCE / SPARE PARTS

WARNING

!

Any maintenance intervention must
be carried out without gas, after the
station has been decompressed, and by

certied and trained persons.

See the notes for the constitutive elements of the
station.

The station must be xed.

2

Table 1. Standard Settings for Single Line Stations

Station Instructions

STATION TYPE OF REGULATOR

Type B 4

CUSTOMER

Direct Action 4

Direct Action 4

NETWORK

* Factory setpoint setting - Regulator delivered without setting

Pilot Operated 4

Direct Action 8 4000 4200

Pilot Operated 25 4000* 4200

Pu MAXIMUM

(barg)

Pd

(mbar)

21 30

27 35

300

21 35 10 30

27 40 15 35

300 400 200

1000 1200 800

21 32

27 40

21* 32

27* 40

SLAM SHUT

Maximum

(mbar)

Minimum

(mbar)

RELIEF VALVE

(mbar)

Table 2. Standard Settings for Double Line Stations

STATION

CUSTOMER

NETWORK

* Factory setpoint setting - Regulator delivered without setting

TYPE

D’APPAREIL

Type B 4

Direct Action 4

Direct Action 4

Pilot Operated 4

Direct Action 8 4000 3600 4400 4800

Pilot Operated 25 4000* 3600* 4400 4800

Pu MAXIMUM

(barg)

Principal Pd

(mbar)

1000 800 1200 800 1400 600

Secondary Pd

(mbar)

21 19 30

27 25 35

300 280

21 19 35

27 25 40 45 35

300 280 400 200 450 150

21 19 32 40

27 25 40 45

21* 19* 32 40

27* 25* 40 45

PRINCIPAL SLAM SHUT SECONDARY SLAM SHUT

Maximum

(mbar)

Minimum

(mbar)

15

Maximum

(mbar)

40

Minimum

(mbar)

10

RELIEF

VALV E
(mbar)

30

3

Station Instructions

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D103691X012 © 2017 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 06/17.
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