Emerson FISHER Enardo Rim Vent Bedienungsanleitung

▲ WARNING

Failure to follow these instructions or to

properly install and maintain this equipment

could result in an explosion, re and/or

chemical contamination causing property

damage and personal injury or death.

Fisher™ rim vents must be installed,

operated and maintained in accordance

with federal, state and local codes, rules

and regulations, and Emerson Process

Management Regulator Technologies Tulsa,

LLC instructions.

Failure to correct trouble could result in a

hazardous condition. Call a qualied service

person to service the unit. Installation,

operation and maintenance procedures

performed by unqualied person may

result in improper adjustment and unsafe

operation. Either condition may result in

equipment damage or personal injury. Only

a qualied person must install or service the

pressure relief valve.

Introduction

Scope of the Manual

This Instruction Manual provides instructions for installation

and maintenance for the enardo rim vent pressure relief valve.

Product Description

Rim vents (top mount) prevent the loss of vapors in a closed

storage system and relieve pressure in atmospheric and

low pressure storage tanks and oating roof tanks such as

those dened in API 12F, API 12B, API 650 and EN 14015.

Rim vents can also be used for emergency venting on small

atmospheric and low pressure tanks.

The enardo rim vent is a pressure-only relief vent that can be

installed on a mating CL150 at faced ange. A 6 in. CL150

ange has a bolting circle with 8 - 0.88 in. bolt holes on a

9 - 1/2 in. bolt hole diameter.

Principle of Operation

Rim vents are installed on oating roofs or cone roofs of

storage tanks with direct communication to the vapor space. In

oating roof tanks, rim vents provide pressure relief to the roof

and seals when the tank is empty, the roof is landed and the

tank is being lled.

Pressure relief to the seals can be achieved when the roof is

oating and if product evaporation occurs. As the pressure in

the vapor space increases above the set point, the weight-

loaded pallet lifts vertically to relieve pressure. As the pressure

in the vapor space drops back below the rim vent set point, the

pallet lowers and closes. The rim vent set point is adjustable by

adding to or removing weights from the pallet.

Figure 1. Enardo Rim Vent Pressure Relief Valve

Instruction Manual

D103826X012

December 2021

Enardo Rim Vent

Outside North America Only

Table of Contents

Introduction............................................................................1

Specifications ........................................................................2

Principle of Operation............................................................1

Product Identification and Marking ........................................3

Installation .............................................................................3

PPE Warning .........................................................................3

Maintenance..........................................................................4

Enardo Rim Vent Pressure Relief Valve

Specications

The Specications section lists the specications for the enardo rim vent pressure relief valve. The following information is

stamped on the nameplate attached to the base of the enardo rim vent: pressure setting and the ow rate at 100% overpressure

in SCFH.

Available Constructions

See Figure 2

Connection Size

6 in. / 150 mm

Pressure setting(1)

See Table 1

Materials of Construction

See Table 2

Flow Rate

See Table 3

Assembly Weights

See Table 1

Certications

EN IEC 60079-0:2018

EN IEC 60079-11:2012

EN ISO 80079-36:2016

EN ISO 80079-37:2016

1. The pressure limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

Teon® is a mark owned by E. I. du Pont de Nemours and Company.

Enardo Rim Vent

Outside North America Only

Table 1. Enardo Rim Vent Pressure Relief Valve Pressure Settings and Assembly Weights

PRESSURE SETTING ASSEMBLY WEIGHT

oz./sq. in. In. w.c. mbar Lbs. kg

0.5 0.9 2.2 14 6

1 1.7 4.3 15 7

2 3.5 8.6 17 8

4 6.9 17.2 22 10

8 13.8 34.5 31 14

12 20.8 51.7 40 18

Table 2. Materials of Construction

BODY HOOD SCREEN PALLET WEIGHTS GASKET RODS

Cast Aluminum

(Alloy 319-F)

Aluminum

(Alloy 3003-H14)

Aluminum

(Alloy 3003-H14)

Polyphenylene Sulde

(PPS)

Zinc Plated

Carbon Steel Teon®Aluminum

(Alloy 6061-T6)

PRESSURE SETTING FLOW RATE AT 100% OVERPRESSURE

(SCFH)

oz./sq. in. In. w.c. mbar

0.5 0.9 2.2 14,899

1 1.7 4.3 21,128

2 3.5 8.6 31,059

4 6.9 17.2 46,463

8 13.8 34.5 63,313

12 20.8 51.7 72,211

Table 3. Flow Rate in SCFH at 100% Overpressure

Rim Vent

Inlet Connection

Size

6 in. / 150 mm

Pressure

Settings

z = oz./sq.in.

0.5 to 12.0 oz./sq.in.

Options

O = No Options

A = Special Coating

B = Stainless steel Weights

C = Optional Weight Material

D = Optional Hardware

E = Optional Gasket Material

F = Steam Jacket or Trace

G = Other

Pallet & Seat

Ring Material

1 = Advanced

Composite-

Polyphenylene

Sulde (PPS)

Pallet Seal

Material

1 = FEP Teon®

Housing

Material

1 = Aluminum

Figure 2. Enardo Rim Vent Available Constructions and Model Numbering System

Product Identication and Marking

Hazardous Locations

Rim Vents are available in aluminum as indicated in Figure 3.

Nameplate

A nameplate is attached to the vent and contains the

following information:

• Model Number – Ex. RIM VENT-6-111

• Connection Flange Size – 6”

• Serial Number

• Tag Number (Optional)

• Notied Body Number – Ex 2460

• Cat. No. (Category Number) – Category 2 – uncoated

aluminum vents

• Date – date of manufacture

• Certicate – Ex. PRESAFE 17 ATEX 10273X

• Pressure Setting and Flow Rate

- Setting – Ex. Z4.0

- Flow Rate SCFH (Air) – Ex. 46,463

▲WARNING

Make sure line is free of hazardoius vapors

before installing or servicing the valve.

Installation

△ CAUTION

Ensure the rim space or tank is at

atmospheric pressure before opening. A

pressure build-up inside the rim space or

tank can cause a spray to be emitted from

the rim vent if opened under pressure.

PPE Warning

▲ WARNING

Wear protective gloves and clothing

to prevent skin contact when handling

lead weights. Wear eye protection. Avoid

breathing dust/fumes/mist/vapors/spray.

Do not eat, dring or smoke while using the

product. Avoid release to the environment.

Wash hands with soap and water after

handling. Keep away from excessive heat

and open ames.

Installation to a Flanged Pipe with a 6 in.

CL150 Flat Faced Flange

1. Place the base gasket on the anged pipe.

2. Line up bolt holes, and place the rim vent on top of the

base gasket.

3. Install nuts and bolts and tighten in a star pattern.

Ensure rim vent is fastened securely.

Note

For proper bolt torquing of the vent

connecting ange to the piping, please refer

to Tables 4 and 5.

Installation Directly to a Tank Roof

1. The tank requires a 6 in. ANSI bolt pattern on the roof.

2. Place the base gasket on the bottom of the rim vent

ange and place the assembly on tank roof with holes

lined up.

3. Insert eight bolts from the bottom up by reaching inside

the tank, through the hatch and opening on the tank roof.

4. Attach each nut to the bolt from the outside. Tighten

all nuts in a star pattern and ensure the rim vent is

fastened securely.

Note

For proper bolt torquing of the vent

connecting ange to the piping, please refer

to Tables 4 and 5.

Removal of Packing Materials

Prior to operation, remove packing material inside the

rim vent.

1. Remove the four wing nuts on the hood and remove the

hood. Lift the upper guide o󰀨 of the two vent rods that

support it.

2. Pull the pallet assembly out of the rim vent and remove

the cardboard gasket protector and the roll of packaging

from the upper stem.

3. Inspect the sealing surface of the rim vent and the gasket

on the pallet assembly for any signs of wear or damage.

4. Place pallet assembly back in the rim vent. Ensure that

the bottom stem is retained by the lower guide hole on

the rim vent base.

5. Place the upper guide back on the two vent rods,

and place the hood back on the four vent rods.

Install the four wing nuts and tighten snugly.

OUTER HOUSING OF UNCOATED ALUMINUM

II 2 G Ex h IIC T6 Gb

Figure 3. Product Identification and Marking

Enardo Rim Vent

Outside North America Only

Maintenance

1. Perform scheduled maintenance at least once a year or

more frequently in corrosive or dusty atmospheres or if

conditions warrant.

2. During normal maintenance, inspect the pressure

gasket and sealing surfaces for signs of wear or

corrosion that could cause increased leakage.

3. To ensure e󰀩cient operation of the rim vent, carefully

wipe the pressure seat and gasket with a clean, non-

abrasive and lint-free cloth or paper towel every time the

rim vent is opened and during scheduled maintenance.

This prevents accumulation of residue that can

deteriorate the performance of the rim vent.

Enardo Rim Vent

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[email protected]

Outside North America Only

Emerson Automation Solutions

Americas

McKinney, Texas 75070 USA

T +1 800 558 5853

+1 972 548 3574

Tulsa, OK 74146 USA

T +1 918 662 6161

Europe

Bologna 40013, Italy

T +39 051 419 0611

Asia Pacic

Singapore 128461, Singapore

T +65 6777 8211

Middle East and Africa

Dubai, United Arab Emirates

T +971 4 811 8100

Enardo.com

The Emerson logo is a trademark and service mark of Emerson

Electric Co. All other marks are the property of their prospective owners.

Fisher™ is a mark owned by Fisher Controls International LLC, a business

of Emerson Automation Solutions.

The contents of this publication are presented for informational purposes

only, and while every e󰀨ort has been made to ensure their accuracy, they

are not to be construed as warranties or guarantees, express or implied,

regarding the products or services described herein or their use or

applicability. All sales are governed by our terms and conditions, which

are available upon request. We reserve the right to modify or improve the

designs or specications of such products at any time without notice.

Emerson Process Management Regulator Technologies Tulsa, LLC does

not assume responsibility for the selection, use or maintenance of any

product. Responsibility for proper selection, use and maintenance of

any Emerson Process Management Regulator Technologies Tulsa, LLC

product remains solely with the purchaser.

Table 4. Torque Specifications - Flat Face Flange, Steel or Aluminum

NOMINAL PIPE DIAMETER # BOLTS BOLT DIAMETER TORQUE

6 8 0.75 in. 49 ft·lbs

Assumptions:

Use of SAE grade 5 bolts or studs or stronger

No lubricant

Elastomer <70 Durometer Shore A

Notes:

Flat faced anges should never be mated to a raised face ange for installation.

If lubricant is used on bolts, apply torque reduction factor listed in Lubricant Table.

For best results hardened steel washers should be used on all cast ange bolted connections.

Table 5. Torque Reduction Factor per Lubricant

DESCRIPTION COEFFICIENT OF FRICTION MULTIPLY TORQUE VALUE IN TABLE BY

Machine Oil f = 0.15 0.75

API SA2 Grease f = 0.12 0.60

Nickel-based Lubricant f = 0.11 0.55

Copper-based Lubricant f = 0.10 0.50

Heavy-duty Lubricating Paste f = 0.06 0.30

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