Alfalaval HLSD-2 User manual

Instruction manual
HLSD-2 Circular Access Tank Cover
IM-TE91K041-EN1
ESE02264
Date of issue: August 29, 2012
First published: August 29, 2012

Instruction Manual, HLSD-2 Circular Access Tank Cover Page 1
IM-TE91K041-EN1
Contents
Contents ....................................................................................................................1
Introduction................................................................................................................3
General description ...................................................................................................4
Application .......................................................................................................................... 4
Working principle ................................................................................................................ 4
Technical and physical data ......................................................................................5
Standard ............................................................................................................................. 5
Options ............................................................................................................................... 5
Selection table .................................................................................................................... 6
Intended purpose.......................................................................................................7
Warranty – definition..................................................................................................7
Safety regulations......................................................................................................8
Components ..............................................................................................................8
Weld into position ......................................................................................................9
Assembly ...................................................................................................................9
Material lifetime .........................................................................................................9
Closure of cover ......................................................................................................10
Opening of cover .....................................................................................................11
Cleaning ..................................................................................................................11
Maintenance ............................................................................................................11
Other........................................................................................................................11
Service / Repair .......................................................................................................12
Warranty ..................................................................................................................12
How to contact Alfa Laval Tank Equipment A/S......................................................13

Instruction Manual, HLSD-2 Circular Access Tank Cover Page 3
IM-TE91K041-EN1
Introduction
This instruction manual has been prepared as a guide for the persons who will be operating/handling
the HLSD-2 Circular Access Tank Covers.
Warning: The service personnel must be acquainted with the content of these instructions in
order to avoid operating errors.
Incorrect use can be of danger to the user or a third party, and can cause damage
to objects and/or people.
You will find the information contained in this manual simple to follow, but should you require further
assistance, our Customer Service Department and world-wide net of Distributors will be pleased to
help you.
Note: The illustrations and specifications contained in this manual were effective at the date of
printing. However, as continuous improvements are our policy, we reserve the right to alter or modify
any unit specification on any product without prior notice or any obligation.
© 2012 Alfa Laval Corporate AB
This document and its contents is owned by Alfa Laval Corporate AB and protected by laws governing
intellectual property and thereto related rights. It is the responsibility of the user of this document to
comply with all applicable intellectual property laws. Without limiting any rights related to this
document, no part of this document may be copied, reproduced or transmitted in any form or by any
means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the
expressed permission of Alfa Laval Corporate AB. Alfa Laval Corporate AB will enforce its rights
related to this document to the fullest extent of the law, including the seeking of criminal prosecution.

Page 4 Instruction Manual, HLSD-2 Circular Access Tank Cover
IM-TE91K041-EN1
General description
Application
Outward opening manhole cover type HLSD-2 is used on top of
pressurized tanks and containers where closeable means of
access to the interior of the vessel is required. HLSD-2 is
approved and can be used on pressure vessels according to
PED 97/23/EC.
Working principle
HLSD-2 is secured in the closed position by swingbolts, which,
together with the seal in the cover, ensure complete tightness.
The cover is attached to the frame by a rigid hinge, giving exact
location of the cover in the closed position and designed to stop
the cover at an angle of 20-30° beyond the vertical position
when opening.

Instruction Manual, HLSD-2 Circular Access Tank Cover Page 5
IM-TE91K041-EN1
Technical and physical data
Standard
The HLSD-2 pressure cover is designed according to Merkblatter AD 2000 newest edition and
designed for installation in pressure vessels until hazard category IV. The cover is not pressure tested
and must be tested as a part of the pressure vessel.
- HLSD-2 is designed for fluid group 1 and 2.
Options
Options
A. Spring to assist opening.
G. Sight glass DIN 11851.
B. Arrangement for securing cover in open and closed
position.
H. Safety grid:
I. Special surface finish.
C. Bracket for indication unit.
J. Frame height G = 300mm.
D. Handle in stainless steel.
K. Seal of Q (silicone), FPM, FEP covered silicone,
E. Guide for cover for vertical installation. Please define
positioning of the hinge (right or left hand side).
PFA covered silicone, FEP covered FPM
L. Conical frame, different frame thickness and
F. Sight glass DIN 28120
frame height available on request
TECHNICAL DATA
Sizes
200 mm, 300 mm, 400 mm, 450 mm, 500 mm and 600
mm.
Pressure
Max. allowable pressure:
According to selection table
Min. allowable negative
pressure:
Full vacuum
Max. test pressure Ptest:
According to selection table,
see page 6
PHYSICAL DATA
Materials
Product wetted steel
parts:
1.4404 (AISI 316L)
Other steel parts:
1.1401 (AISI 304)
Seal:
EPDM, FPM, Silicone, FEP
covered silicone, FEP covered
FPM, PFA covered silicone
Standard surface
finish:
Semi bright. Outside Ra
1.6µm, inside Ra 0.8µm
Temperature
Temperature range:
-10°C to +250°C

Page 6 Instruction Manual, HLSD-2 Circular Access Tank Cover
IM-TE91K041-EN1
Technical and physical data (continued)
Selection table
Size A
Number of bolts
Max. allowable pressure PS (bar) at design
temperature Td (°C) Max. test
pressure Ptest
Cover thickness
(SL) Cover radius
mm mm 50°C 100°C 150°C 200°C 250°C
bar bar bar bar bar bar mm mm
200 208 4 14.7 13.0 11.8 10.8 10.0 21.1 8 500
300 308 4
6
7.6
9.4
6.7
8.4
6.4
7.5
6.1
6.9
6.0
6.4
13.5
13.5
5
6
500
500
400 408
4
6
8
4.4
6.6
8.7
3.8
5.8
7.7
3.7
5.5
7.4
3.5
5.3
7.1
3.4
5.2
6.8
10.1
14.3
14.3
4
5
6
500
500
500
450 458
6
8
10
5.2
7.0
8.7
4.6
6.1
7.7
4.4
5.9
7.1
4.2
5.7
7.0
4.1
5.5
6.8
12.0
12.5
14.5
4
5
6
500
500
500
500 508
6
8
10
4.2
5.7
7.5
3.7
5.0
6.9
3.6
4.8
6.6
3.4
4.6
6.3
3.3
4.5
6.2
9.8
10.7
12.0
4
4
5
500
500
500
600 608
6
8
10
12
14
3.0
4.0
5.0
6.0
7.0
2.6
3.5
4.4
5.3
6.1
2.5
3.3
4.2
5.0
5.9
2.4
3.2
4.0
4.9
5.7
2.3
3.1
3.9
4.7
5.4
6.9
7.7
7.7
8.8
10.0
4
4
4
5
5
500
500
500
500
500
Size
200
300
400
450
500
600
mm
mm
mm
mm
mm
mm
A 208 308 408 458 508 608
C1
154
204
254
279
309
359
C
320
420
520
570
625
725
E
237
237
247
247
247
247
F
125
125
125
125
125
125
G
150
150
150
150
150
150
H
185
198
226
240
251
285
R
500
500
500
500
500
500
SL see selection table
t
4
4
4
4
4
4
Certificates
- 3.1 Certificate (EN10204)
- EC unit verification module G according to PED 97/23/EC
- FDA declaration §177.2600 for seal material (except FPM seal)
- ASME BPE Certificate (option)
Dimensions

Instruction Manual, HLSD-2 Circular Access Tank Cover Page 7
IM-TE91K041-EN1
Intended purpose
Alfa Laval covers are suitable for different applications (e.g.: filling, emptying, access for cleaning or
inspection, general access opening etc.).
Clients must specify the detailed version of each cover required. The client must determine the
Intended Purpose of the cover from the technical data of the whole container / vessel (Including details
such as Working / Design Pressures and Temps etc.).
Warranty – definition
Warning: The rules of Intended Purpose are absolute. Use of the cover is allowed only when in
compliance with the technical data supplied with the Intended Purpose.
Differing utilisation, other than agreed with Alfa Laval Tank Equipment A/S, exclude
any liability and warranty.
No modification or alteration of the cover is allowed, unless explicit permission is
granted by Alfa Laval Tank Equipment A/S.
Liability and warranty are excluded:
•If advice and instruction of operating instructions are ignored.
•For incorrect operation or for insufficient maintenance of the cover.
•For any kind of change of function of cover without prior written agreement by Alfa Laval Tank
Equipment A/S.
•If covers are modified by non-authorised persons.
•If using the covers without attention of appropriate safety regulations. (See respective section of
this operating instruction, page 8).
•If protection equipment is not used and vessel process / ancillary equipment is not brought to a
standstill.
•If the cover and ancillary parts are not properly maintained (to be executed in intervals and
including fitting of prescribed replacement parts).
When exchanging parts, only original replacement parts, released from the manufacturer, must be
used.

Page 8 Instruction Manual, HLSD-2 Circular Access Tank Cover
IM-TE91K041-EN1
Safety regulations
Warning All operators must be trained / certified to work in the area of the container operation
and must abide by the site safety regulations.
All work on the cover must be carried out by competent staff with knowledge of the
relevant rules of operation of container and pressure container.
When the removal of protection equipment is necessary for cleaning or maintenance
purpose, assembly and examination of protection equipment has to follow immediately!
Before opening the cover, check the pressure of the container. Only open the cover
when the container is not under pressure.
Conditions are not allowed to exceed pressure and temperature specified. The
Pressure (PS) and Temperature (TS) are written on each cover.
When filling and emptying the container, the regulations regarding contact of the liquid
or content (e.g. foodstuff) must be kept.
National rules regarding use and test frequency must be followed.
Components
Depending of the detailed version of the cover, specified by the customer, components are attached
accordingly.
Typical components according to drawing:
•Screws complete (number according to description)
•Hinge / swivelling feature
•Screwed sight glass / circular sight glass
•Spring assist
•Limit switch
•Locking bolt
•Safety grill
•Safety valve
•Etc for other special items agreed