SIST EN ISO 10438-3:2008
(Main)Petroleum, petrochemical and natural gas industries - Lubrication, shaft-sealing and control-oil systems and auxiliaries - Part 3: General-purpose oil systems (ISO 10438-3:2007)
- Abstract
ISO 10438-3:2007, in conjunction with ISO 10438-1, specifies requirements for oil systems for general-purpose applications. These oil systems can provide lubrication oil, but not seal oil and can serve equipment such as compressors, gears, pumps and drivers.
- Status
- Published
- Publication Date
- 15-Jan-2008
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 08-Jan-2008
- Due Date
- 14-Mar-2008
- Completion Date
- 16-Jan-2008
SIST EN ISO 10438-3:2008 is the Slovenian adoption of EN ISO 10438-3:2007, published by SIST and based on ISO 10438-3:2007. It specifies requirements for general-purpose oil systems used in the petroleum, petrochemical and natural gas industries, together with ISO 10438-1. These systems provide lubrication oil, not seal oil, for equipment such as compressors, gears, pumps and drivers.
What does SIST EN ISO 10438-3:2008 specify?
SIST EN ISO 10438-3:2008 sets requirements for the design, components, testing and documentation of general-purpose oil systems. It is intended to be used with ISO 10438-1, which supplies the shared general requirements, terms and common piping, instrumentation and testing rules.
The document is organized into eight clauses and four informative annexes.
| Part of the document | What it covers |
|---|---|
| Clause 1 | Scope |
| Clause 2 | Normative references |
| Clause 3 | Terms, abbreviated terms and definitions |
| Clause 4 | General design requirements for the console, reservoir, pumps, coolers, filters, valves and rundown tanks |
| Clause 5 | Piping |
| Clause 6 | Instrumentation and electrical systems |
| Clause 7 | Inspection, testing and preparation for shipment |
| Clause 8 | Vendor's data |
| Annex A | Datasheets |
| Annex B | Piping and instrument diagrams |
| Annex C | Inspector's checklist |
| Annex D | Guidance to system reliability |
In practice, this means the standard is most useful when a purchaser or vendor needs a clear package definition for a lubrication oil system, including the hardware arrangement, the required checks, and the information that must be exchanged during purchase and delivery.
What are the key requirements of SIST EN ISO 10438-3:2008?
SIST EN ISO 10438-3:2008 focuses on getting a general-purpose oil system to deliver clean oil at the right pressure and temperature for start-up and all operating conditions. It also ties the design to reliability, maintainability and safe operation.
System selection and operating duty
Clause 4.1 introduces a coding system for general-purpose oil systems. The purchaser chooses the class and code based on the reliability target for the equipment train, and Table 2 gives recommended minimum classes for certain equipment types.
The practical effect is that the standard does not give one fixed package for every service. Instead, it gives a structured way to select a system that matches the duty, whether the service is for a pump, compressor, gear or driver.
General design, access and maintainability
Clause 4.2 requires a minimum service life of 20 years and requires the purchaser to specify the mission time, operating points and transients. It also requires clear access, safe maintenance arrangements and mutual agreement where several machines share one oil system.
This matters because the vendor must design for the real operating envelope, not just nominal running conditions. The document also prefers recycled oil upstream of the filters and requires it when an explosive mixture could form in the reservoir, which reduces static-related risk.
Reservoirs, baseplates and structural arrangement
Clauses 4.3 and 4.4 cover baseplates and reservoirs. The baseplate must support the main components, drain properly, allow lifting without damage and provide grouting access when required. The reservoir must stay sealed against dirt and water, keep return oil away from pump suction, provide inspection access, and include the usual level, vent, drain and grounding features.
For the user, this means the reservoir is not treated as a simple tank. It is a functional part of the oil system that affects cleanliness, aeration, inspection access and safe installation.
Pumps, drivers and protection devices
Clause 4.5 requires a continuous-duty pump arrangement with the pump type chosen by the purchaser. Pumps are sized with margin above normal flow, drivers are sized for the specified pressure, and each pump discharge needs a check valve.
The clause also covers standby pumps, automatic low-pressure start-up, suction arrangements, temporary or permanent strainers, pressure-limiting valves and smooth pressure-regulating devices. In practice, this is the section that protects the equipment from loss of oil supply, reverse flow, overpressure and unstable pressure control.
Cooling and filtration
Clause 4.6 sets the cooling requirement so the oil supply temperature stays at or below 50 °C unless otherwise specified. Shell-and-tube coolers are the default, while plate-frame and fin-fan coolers are covered when specified. The clause also addresses thermal protection of duplex arrangements, venting and draining, and coolant-side design conditions when water systems are specified.
Clause 4.7 requires duplex replaceable full-flow filters with high filtration efficiency when tested to ISO 16889. Filters must be downstream of the coolers, must not bypass dirty oil around the elements, and must be arranged so changeover and maintenance do not compromise system cleanliness.
Transfer valves, rundown tanks, instrumentation and testing
Clause 4.8 covers continuous-flow transfer valves for coolers and filters, including body materials and safeguards against blocked flow paths. Clause 4.9 covers emergency lube-oil rundown tanks when specified, including coast-down capacity, access and alarm functions.
Clause 6 requires alarms and shutdowns for conditions such as low pressure, high differential pressure across filters, low reservoir level and high oil temperature leaving the cooler. Clause 7 then requires hydrostatic testing, operational testing, leak checks, changeover checks, automatic standby-pump start and cleanliness verification before shipment.
What terms does SIST EN ISO 10438-3:2008 use?
The document uses the terms and abbreviations from ISO 10438-1 and also relies on these common abbreviations:
- GP - general-purpose, used for the oil systems covered by this part.
- PLV - pressure-limiting valve, which protects the system from excess pressure.
- SPL - sound pressure level, the noise limit that the purchaser and vendor coordinate.
- P&ID - piping and instrument diagram, which shows the arrangement of the system.
- FMEA - failure modes and effects analysis, used in Annex D to weigh reliability options.
- MAWP - maximum allowable working pressure, the pressure rating used for vessels and coolers.
- Mission time - the period of uninterrupted operation the purchaser wants the system to support.
Who uses SIST EN ISO 10438-3:2008?
SIST EN ISO 10438-3:2008 is used by purchasers, rotating equipment engineers, package vendors, system integrators and inspectors in petroleum, petrochemical and natural gas projects. It is also useful to quality managers and maintenance teams who need to check whether the delivered oil console matches the specified design, testing and shipment requirements.
In practice, users apply it when specifying lubrication oil systems, reviewing datasheets and P&IDs, selecting pumps, coolers and filters, and verifying shop tests and cleanliness before delivery.
What changed in SIST EN ISO 10438-3:2008 from the previous edition?
This second edition cancels and replaces ISO 10438-3:2003 and is technically revised. The European Standard EN ISO 10438-3:2007 also supersedes EN ISO 10438-3:2003.
Which standards are used with SIST EN ISO 10438-3:2008?
| Referenced document | What it contributes |
|---|---|
| ISO 10438-1:2007 | General requirements shared by all parts, including terms and common rules |
| ISO 10438-2:2007 | Special-purpose oil systems and related reference arrangements |
| ISO 13706:2005 | Guidance for air-cooled heat exchangers and belt-drive requirements |
| ISO 13709 | Centrifugal pumps for petroleum, petrochemical and natural gas industries |
| ISO 15649:2001 | Piping requirements used with the oil system piping clauses |
| ISO 16889 | Filter test method and filtration performance evaluation |
| API RP 686 | Machinery installation and installation design guidance |
| IEC 60034 | Rotating electrical machines for motor requirements |
| TEMA | Shell-and-tube heat exchanger construction practice |
| NEMA MG1 | Motor and generator requirements |
What does the SIST EN ISO 10438-3:2008 document contain?
The document includes class coding tables, recommended minimum system selections for certain equipment, and sample system designations that show how the codes are combined. Annex B contains complete example P&IDs for common general-purpose oil system arrangements, and Table B.1 identifies the key items in those diagrams.
It also contains an inspector's checklist in Annex C that maps directly to clauses on design, piping, instrumentation, testing and shipment. Annex D gives reliability guidance and a failure modes and effects analysis (FMEA) to help users decide whether to add or remove options such as heaters, dual coolers, standby pumps or alternative cooling arrangements.
For day-to-day project work, the document is mainly a specification, review and verification package: it supports design decisions, vendor proposals, shop tests, inspection sign-off and final delivery checks.
Relations
- Effective Date
- 01-Mar-2008
- Effective Date
- 25-Aug-2026
- Refers
SIST EN 12593:2000 - Bitumen and bituminous binders - Determination of the Fraass breaking point - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
SIST EN ISO 10438-3:2008 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Petroleum, petrochemical and natural gas industries - Lubrication, shaft-sealing and control-oil systems and auxiliaries - Part 3: General-purpose oil systems (ISO 10438-3:2007)". This standard covers: ISO 10438-3:2007, in conjunction with ISO 10438-1, specifies requirements for oil systems for general-purpose applications. These oil systems can provide lubrication oil, but not seal oil and can serve equipment such as compressors, gears, pumps and drivers.
ISO 10438-3:2007, in conjunction with ISO 10438-1, specifies requirements for oil systems for general-purpose applications. These oil systems can provide lubrication oil, but not seal oil and can serve equipment such as compressors, gears, pumps and drivers.
SIST EN ISO 10438-3:2008 is classified under the following ICS (International Classification for Standards) categories: 75.180.20 - Processing equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 10438-3:2008 has the following relationships with other standards: It is inter standard links to SIST EN ISO 10438-3:2004, SIST ISO 16889:2001, SIST EN 12593:2000, SIST EN 14023:2005, SIST EN ISO 8754:1998, SIST EN ISO 9029:1998, SIST EN ISO 8222:1998, SIST EN ISO 8973:1999, SIST EN 12595:2000, SIST EN ISO 10634:1999, SIST EN ISO 9163:2000, SIST EN 13630-7:2002, SIST EN 14420-7:2005, SIST EN 691-1:2012, SIST EN 16584-3:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 10438-3:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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Petroleum, petrochemical and natural gas industries - Lubrication, shaft-sealing and
control-oil systems and auxiliaries - Part 3: General-purpose oil systems (ISO 10438-
3:2007)
Erdöl-, petrochemische und Erdgasindustrie - Schmieröl-, Sperröl- und
Regelölversorgungsanlagen und Hilfsanlagen - Teil 3: Ölversorgungsanlagen für
allgemeine Anwendungsfälle (ISO 10438-3:2007)
Industries du pétrole, de la pétrochimie et du gaz naturel - Systèmes de lubrification,
systèmes d'étanchéité, systèmes d'huile de régulation et leurs auxiliaires - Partie 3:
Systèmes d'huile pour applications générales (ISO 10438-3:2007)
Ta slovenski standard je istoveten z: EN ISO 10438-3:2007
ICS:
75.180.20
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 10438-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2007
ICS 75.180.20 Supersedes EN ISO 10438-3:2003
English Version
Petroleum, petrochemical and natural gas industries -
Lubrication, shaft-sealing and control-oil systems and auxiliaries
- Part 3: General-purpose oil systems (ISO 10438-3:2007)
Industries du pétrole, de la pétrochimie et du gaz naturel - Erdöl-, petrochemische und Erdgasindustrie - Schmieröl-,
Systèmes de lubrification, systèmes d'étanchéité, systèmes Sperröl- und Regelölversorgungsanlagen und Hilfsanlagen
d'huile de régulation et leurs auxiliaires - Partie 3: - Teil 3: Ölversorgungsanlagen für allgemeine
Systèmes d'huile pour applications générales (ISO 10438- Anwendungsfälle (ISO 10438-3:2007)
3:2007)
This European Standard was approved by CEN on 14 December 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10438-3:2007: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Foreword
This document (EN ISO 10438-3:2007) has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum and natural gas industries" in collaboration with Technical
Committee CEN/TC 12 "Materials, equipment and offshore structures for petroleum, petrochemical and
natural gas industries", the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2008, and conflicting national standards shall be withdrawn at
the latest by June 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 10438-3:2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 10438-3:2007 has been approved by CEN as a EN ISO 10438-3:2007 without any
modification.
INTERNATIONAL ISO
STANDARD 10438-3
Second edition
2007-12-15
Petroleum, petrochemical and natural gas
industries — Lubrication, shaft-sealing
and control-oil systems and auxiliaries —
Part 3:
General-purpose oil systems
Industries du pétrole, de la pétrochimie et du gaz naturel — Systèmes
de lubrification, systèmes d'étanchéité, systèmes d'huile de régulation
et leurs auxiliaires —
Partie 3: Systèmes d'huile pour applications générales
Reference number
ISO 10438-3:2007(E)
©
ISO 2007
ISO 10438-3:2007(E)
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ii © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, abbreviated terms and definitions . 2
4 General. 2
4.1 Basic design. 2
4.2 General. 4
4.3 Baseplates . 5
4.4 Oil reservoirs. 6
4.5 Pumps and pump drivers. 9
4.6 Coolers. 13
4.7 Filters . 16
4.8 Transfer valves. 18
4.9 Lube-oil rundown tanks . 18
5 Piping . 19
5.1 General. 19
5.2 Oil piping . 19
5.3 Instrument piping. 19
5.4 Water piping . 19
6 Instrumentation and electrical systems . 19
7 Inspection, testing and preparation for shipment. 20
7.1 General. 20
7.2 Inspection . 20
7.3 Testing . 20
7.4 Preparation for shipment . 22
8 Vendor's data . 22
8.1 General. 22
8.2 Proposals. 22
Annex A (informative) Datasheets . 23
Annex B (informative) Piping and instrument diagrams . 24
Annex C (informative) Inspector's checklist. 29
Annex D (informative) Guidance to system reliability. 32
Bibliography . 37
ISO 10438-3:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10438-3 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries, Subcommittee SC 6, Processing equipment and
systems.
This second edition cancels and replaces the first edition (ISO 10438-3:2003), which has been technically
revised.
ISO 10438 consists of the following parts, under the general title Petroleum, petrochemical and natural gas
industries — Lubrication, shaft-sealing and control-oil systems and auxiliaries:
⎯ Part 1: General requirements
⎯ Part 2: Special-purpose oil systems
⎯ Part 3: General-purpose oil systems
⎯ Part 4: Self-acting gas seal support systems
iv © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
Introduction
This International Standard was developed jointly with API 614, 5th edition. ISO 10438 is divided into four
parts corresponding to the four chapters of API 614.
Users of this part of ISO 10438 should be aware that further or differing requirements might be needed for
individual applications. This part of ISO 10438 is not intended to inhibit a vendor from offering, or the
purchaser from accepting, alternative equipment or engineering solutions for the individual application. This
may be particularly appropriate where there is innovative or developing technology. Where an alternative is
offered, the vendor should identify any variations from this part of ISO 10438 and provide details. This part of
ISO 10438 is to be used in conjunction with 10438-1.
This part of ISO 10438 requires the purchaser to specify certain details and features.
A bullet (•) at the beginning of a clause or subclause indicates that either a decision is required or further
information is to be provided by the purchaser. This information should be indicated on the datasheet(s);
otherwise it should be stated in the quotation request or in the order.
In this International Standard, US Customary (USC) units are included in brackets for information.
INTERNATIONAL STANDARD ISO 10438-3:2007(E)
Petroleum, petrochemical and natural gas industries —
Lubrication, shaft-sealing and control-oil systems and
auxiliaries —
Part 3:
General-purpose oil systems
1 Scope
This part of ISO 10438, in conjunction with ISO 10438-1, specifies requirements for oil systems for general-
purpose applications. These oil systems can provide lubrication oil, but not seal oil and can serve equipment
such as compressors, gears, pumps and drivers.
NOTE The term “general-purpose” is defined in ISO 10438-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 10438-1:2007, Petroleum, petrochemical and natural gas industries — Lubrication, shaft-sealing and
control-oil systems and auxiliaries — Part 1: General requirements
ISO 10438-2:2007, Petroleum, petrochemical and natural gas industries — Lubrication, shaft-sealing and
control-oil systems and auxiliaries — Part 2: Special-purpose oil systems
ISO 13706:2005, Petroleum, petrochemical and natural gas industries — Air-cooled heat exchangers
ISO 13709, Centrifugal pumps for petroleum, petrochemical and natural gas industries
ISO 15649:2001, Petroleum and natural gas industries — Piping
ISO 16889, Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance of a filter
1)
element
API RP 686, Machinery Installation and Installation Design
IEC 60034 (all parts), Rotating electrical machines
TEMA, Standards of the Tubular Exchanger Manufacturers Association
NEMA MG1, Motors and Generators
1) To be published. (Revision of ISO 16889:1999)
ISO 10438-3:2007(E)
3 Terms, abbreviated terms and definitions
For the purposes of this document, the terms, definitions and abbreviated terms given in ISO 10438-1 apply.
4 General
4.1 Basic design
z 4.1.1 This part of ISO 10438 covers general-purpose oil systems. Typical datasheets for general-purpose
oil systems are in Annex A. Typical piping and instrument diagrams for general-purpose oil systems are in
Annex B. Typical inspector checklists for general-purpose oil systems are in Annex C. General-purpose (GP)
oil systems are divided into classes and are defined by a coding system that defines the major components
supplied (see Table 1). The user shall choose the applicable class and code based upon the required
minimum reliability targets for the equipment train. Various API standards have supplied minimum
recommended systems as indicated in Table 2 for their equipment. Annex D is supplied as a reference to
provide guidance on the selection of a system.
Table 1 — General-purpose oil system class types with standard configuration options
Equipment Class I Class II Class III
Shaft-driven main pump and Motor main and motor
Pump configuration Shaft-driven main pump only
motor auxiliary pump auxiliary pump
Positive displacement P0 P0 P0
Centrifugal N/A N/A P1
Reservoir part of equipment
R0 R0 R0
(i.e. gear case)
External stainless reservoir R1 R1 R1
Stainless pipe Default Default Default
No reservoir heater included H0 H0 H0
Reservoir heater H1 H1 H1
Baseplate part of equipment BP0 BP0 BP0
Stand-alone console,
reservoir mounted
BP1 BP1 BP1
(No baseplate)
Stand-alone console with full
BP2 BP2 BP2
baseplate
Single cooler and single filter C1F1 C1F1 C1F1
Single cooler and dual filter C1F2 C1F2 C1F2
Dual cooler and single filter C2F1 C2F1 C2F1
Dual cooler and dual filter C2F2 C2F2 C2F2
Shell-and-tube cooler(s) C0 C0 C0
Plate-and-frame cooler(s) C1 C1 C1
Fin/Fan cooler C2 C2 C2
Combined plv/pcv
PV0 PV0 PV0
(not applicable to centrifugal
pumps)
2 © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
Table 1 (continued)
Equipment Class I Class II Class III
Separate PCV PV1 PV1 PV1
No thermostatic valve
TV0 TV0 TV0
included
Thermostatic valve TV1 TV1 TV1
No block-and-bypass valves
BB0 BB0 BB0
included
Block-and-bypass valves
BB1 BB1 BB1
around PCV
EXAMPLE 1 General-purpose system designations: Class I-P0-R1-H1-BP1-C1F2-C0-PV0-TV0-BB0
Shaft-driven main pump
Positive-displacement pump
External stainless steel reservoir
Reservoir heater included
Stand-alone console reservoir mounted equipment (no baseplate)
Single cooler and dual filters
Shell and tube cooler type
Combined PLV and PCV
No thermostatic valve
No block and bypass valves
EXAMPLE 2 General-purpose system designations: Class III-P0-R1-H1-BP2-C2F2-C0-PV1-TV1-BB1
Motor-driven main and motor-driven auxiliary pump
Positive-displacement pumps
External stainless steel reservoir
Reservoir heater included
Stand-alone console with full baseplate
Dual coolers and dual filters
Shell and tube cooler type
Separate PLV and PCV
Thermostatic valve
Block and bypass valves
ISO 10438-3:2007(E)
Table 2 — Recommendations of minimum GP system class by equipment
a
P&ID figure Console class and code
Equipment type
ISO 13709 or API 610 B.1 Class II – P0-R1-H0-BP0-C1F1-C0-PV0-TV0-BB0
API 611 B.1 Class II – P0-R1-H0-BP1-C1F1-C0-PV0-TV0-BB0
ISO 13707 or API 618 B.2 Class II – P0-R0-H1-BP2-C1F2-C0-PV0-TV1-BB0
API 672 B.3 Class II – P0-R0-H1-BP0-C1F2-C0-PV1-TV1-BB0
API 673 B.4 Class III – P0-R1-H1-BP1-C1F1-C0-PV0-TV1-BB0
API 674 B.5 Class I – P0-R0-H0-BP0-C1F1-C0-PV0-TV0-BB0
API 677 B.5 Class I – P0-R0-H0-BP0-C1F1-C0-PV0-TV0-BB0
NOTE 1 This table is presented for guidance in the selection of a lubrication system for the above referenced
equipment.
NOTE 2 The recommended base systems are based on the individual referenced equipment standard
recommendations at the time of publication of this part of ISO 10438.
a
The referenced equipment standards may suggest alternative base systems in editions published subsequent to
this part of ISO 10438, or the user may select alternative systems based on his experience or a Failure modes and
effects analysis (FMEA) as described in Annex D.
4.1.2 The oil system supplied shall be capable of supplying sufficient quantities of clean, filtered oil at
proper temperature and pressure for start-up and all operating conditions of the serviced rotating equipment.
4.2 General
4.2.1 The equipment (including auxiliaries) covered by this part of ISO 10438 shall be designed and
constructed for a minimum service life of 20 years.
NOTE It is recognized that this is a design criterion.
z 4.2.2 The purchaser shall specify the design goal for uninterrupted operation (mission time) of the
equipment.
NOTE Annex D is available as a guide for system reliability goals.
4.2.3 The oil system shall be suitable for general purpose applications as defined in ISO 10438-1:2007,
3.1.17. The system shall be designed as a separate console or may be designed to be integral with the
baseplate of the equipment it serves. If components are spared, the design shall allow for transfer between
and shutdown of the main and spared components of the system for maintenance without interrupting the
operation of the system or the equipment the system serves. General-purpose systems supply lubricating oil
only (i.e. no seal oil) and do not require an accumulator to cover transient conditions.
An accumulator may be specified in accordance with ISO 10438-2, however, it is normally not required on this
class of equipment.
z 4.2.4 The purchaser shall specify the equipment's normal operating point and alternate operating points,
including transients.
z 4.2.5 Control of the sound pressure level (SPL) of all equipment furnished shall be a joint effort of the
purchaser and the vendor having unit responsibility. The equipment furnished by the vendor shall conform to
the maximum allowable sound pressure level specified. In order to determine compliance, the vendor shall
provide both maximum sound pressure and sound power level data per octave band for the equipment.
z 4.2.6 Where oil is supplied from a common system to two or more machines (such as a compressor, a gear
and a motor), the oil's characteristics shall be specified by the purchaser on the basis of mutual agreement
with all vendors supplying equipment served by the common oil system.
4 © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
z 4.2.7 The system shall be designed to supply oil to all equipment specified.
4.2.8 Recycled oil originating upstream of the filters is preferred and is required when there is a possibility
of an explosive mixture in the reservoir.
NOTE This is to minimize the potential for generation of static electricity (or a static charge) that can result when
filtered oil bypasses the equipment and is recycled directly to the reservoir.
z 4.2.9 If specified, the arrangement of the equipment, including piping and auxiliaries, shall be developed
jointly by the purchaser and the vendor. The arrangement shall provide adequate clearance areas and safe
access for operation and maintenance.
NOTE For some pre-engineered general purpose oil systems, purchaser input might be impractical.
z 4.2.10 If specified, minimum defined requirements for clearance around and access to components
(especially clearance around and access to coolers, filters and hand valves) shall be incorporated as design
requirements.
z 4.2.11 If specified, pumps, filters, strainers, coolers, traps, valves and all other components that retain oil
under pressure and are external to the reservoir shall be made of steel.
4.2.12 Unless otherwise specified, pumps may be submerged in the reservoir and these may be made of
cast iron.
z 4.2.13 If specified, valved vents, drains and piping shall be furnished to permit draining, cleaning and refilling
of idle components while the equipment is in operation.
z 4.2.14 Unless otherwise specified, coolers, filters, overhead oil tanks, drain traps, accumulators and other
pressure vessels shall be in accordance with the specified pressure design code. If specified by the
purchaser, vessels shall be code stamped.
NOTE 1 Code stamping might not be applicable for pressure design codes other than ASME.
NOTE 2 Local jurisdictions can require a code stamp.
NOTE 3 Code stamping can require additional inspection over the life of the equipment.
z 4.2.15 The vendor shall advise the purchaser of, and both parties shall mutually agree upon, any special
provisions that are necessary to ensure that an adequate back-up supply of lube oil is maintained in the event
of complete failure of the primary lube-oil supply system. These provisions may include standby pumps,
rundown tanks and special arrangements for equipment safety and protection when the equipment
decelerates. Provisions shall be adequate for coast-down time and cool-off time, as applicable. The purchaser
and the vendor shall mutually agree on the system and its components.
4.2.16 Block valves that interrupt the oil flow to the equipment shall not be installed in oil supply lines
downstream of the filters unless the block valves are part of a component block and bypass arrangement.
4.2.17 When components that can require later removal for maintenance are installed using screwed
connections, the connecting piping shall be provided with flanges such that the component can be removed
without requiring cutting pipe or major disassembly of the unit.
4.3 Baseplates
4.3.1 The major components (pumps, filters, coolers and reservoir) shall be mounted directly on structural
steel as a separate console or integrated with the equipment base.
NOTE Reference can be made to the baseplate section of the lubricated equipment specification for baseplate
requirements when the console is integrated into the equipment base.
ISO 10438-3:2007(E)
4.3.2 Unless otherwise specified, package baseplates shall be of the drain-gutter type with one or more
drain connections at least DN 40 (NPS 1 1/2). Baseplates, mounted components and decking shall be
arranged and installed to ensure drainage and avoid the retention of liquid. Sloping of the decking is not
required.
z 4.3.3 If specified, sloped decking shall be furnished.
4.3.4 The baseplate shall be provided with lifting lugs for at least a four-point lift or other suitable means.
The baseplate shall be designed so that after the components and all piping mounted on it are drained of oil,
the package can be lifted without permanently distorting or otherwise damaging either the baseplate or any
component mounted on it.
z 4.3.5 If specified, metal decking covering all walk and work areas shall be provided on the top of the
baseplate. If furnished, metal decking shall be non-skid.
NOTE Decking might not be required when the grout pour is used to create a walking surface.
z 4.3.6 If specified, baseplates shall be suitable for installation in accordance with API RP 686. Unless
otherwise specified, all baseplates shall be provided with at least one opening or hole in each bulkhead
section through which grout can be poured and vented. Each opening shall have a clear area of no less than
2 2
125 cm (20 in ) and no dimension less than 100 mm (4 in), and each shall permit filling and venting of the
entire cavity with grout under the baseplate without creating air pockets. Each hole into which the grout is
poured shall be accessible: no component or piping shall be disturbed and no tripping hazards in walk and
work areas shall be created. Vent holes at least 13 mm (1/2 in) in diameter shall be provided for each
bulkhead compartment. Each grout hole shall also be provided with steel curbing 13 mm (1/2 in) high to
prevent accumulated oil or water from entering the grout. Vent holes shall be provided without curbing.
z 4.3.7 If specified, the baseplate shall be suitable for column mounting (that is, of sufficient rigidity to be
supported at specified points) without continuous grouting under structural members. The baseplate design
shall be mutually agreed upon by the purchaser and the vendor.
4.3.8 The bottom of the baseplate between structural members shall be open. When the baseplate is
installed on a concrete foundation and grouted as specified in 4.3.6, accessibility for grouting under all load-
carrying structural members shall be provided.
4.3.9 Levelling screws shall be provided in the proximity of each hold-down bolt.
4.4 Oil reservoirs
4.4.1 General
Reservoirs shall be separate or combined with the equipment baseplate and be rigid enough to prevent
sagging and vibration. Components bolted to the reservoir shall be mounted on pads; no bolt holes shall
extend into the reservoir.
4.4.2 Protection from dirt and water
Reservoirs shall be sealed to prevent dirt and water from entering. Top-surface openings shall be raised at
least 6 mm (1/4 in) and shall have a gasket. When pumps, coolers or filters are mounted on top of the
reservoir, the reservoir top may be provided with a drain rim or gutter and one or more drain connections.
NOTE For installations on an existing equipment base, a drain rim or gutter might not be required on the reservoir.
4.4.3 Oil connections and internal piping
4.4.3.1 All oil return flow streams shall be hydraulically located as far away from the pump suction
connections as possible.
6 © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
NOTE The use of the term “hydraulically located as far away” is intended to convey the concept that return flow
streams can be directed by internal piping or baffling to avoid disturbing the oil flow at pump inlets. This internal piping or
baffling can be used in lieu of external connections physically located such a distance from the pump suctions that they
avoid disturbing the oil flow at the pump inlets.
4.4.3.2 All atmospheric oil return connections (including fill connections) shall be located above the
maximum operating level and shall transport oil (via open-top stilling tubes or degassing trays) as shown in
ISO 10438-2:2007, Figure B.24. Stilling tubes shall have bottom baffles.
4.4.3.3 Pump suction connections shall be located at least 50 mm (2 in) above the reservoir bottom.
4.4.3.4 Reservoir pipe connections 40 mm (1 1/2 in) and larger shall be flanged.
4.4.4 Manways and drains
4.4.4.1 Reservoirs shall be furnished with a valved and blind-flanged or plugged-drain connection.
z 4.4.4.2 If specified, to ensure complete drainage, the bottom of each reservoir shall be sloped to a low
point drain.
z 4.4.4.3 If specified, a drain connection (with a valve and a blind flange) at least 50 mm (2 in) in diameter
shall be provided.
4.4.4.4 Reservoirs shall be provided with unobstructed access for direct interior visual inspection and
cleaning. Manways, if required, shall be at least 600 mm × 600 mm in diameter (24 in × 24 in). If manway-
sized access is not required for inspection or cleaning, a minimum 150 mm × 150 mm (6 in × 6 in) port or ports
shall be provided.
4.4.5 Features and appendages
The oil reservoir shall have the following features and appendages:
a) capacity to settle moisture and foreign matter adequately and to provide allowance for rundown from the
entire system;
b) provisions to eliminate air and minimize migration of foreign matter to each pump suction;
c) reservoir-level indicator, such as a dipstick, level gauge, or bulls eye;
z d) if specified, an oil level glass arranged to cover the span from at least 25 mm (1 in) above the rundown
level to 50 mm (2 in) below the pump suction-loss level. The oil level glass shall be located as far away as
possible from the oil return lines and be visible from the perimeter of the unit. The maximum and
minimum operating levels, rundown level and suction-loss level shall be indicated on the glass. If more
than one level glass is provided, they shall be offset. The top glass shall be of the weld pad type;
e) weatherproof, corrosion-resistant filter-breather cap at least 50 mm (2 in) in diameter with filtration rating
of 10 µm beta 10 or better shall be provided (this connection may also be used as a fill opening);
z f) if specified, a fill opening at least 50 mm (2 in) in diameter that automatically closes (normally held shut by
a spring) and is equipped with a stainless steel fine-mesh strainer basket that has an open area equal to
200 % of the internal pipe area;
g) internal baffles that are not gas-tight;
h) individual, non-pressurized reservoir return lines that shall enter the reservoir above the maximum
operating level (see ISO 10438-1:2007, Annex F).
ISO 10438-3:2007(E)
4.4.6 Capacity and configurations
z 4.4.6.1 If specified, a low-level alarm that actuates at the minimum operating level shall be provided.
4.4.6.2 The criteria for sizing a reservoir are given in a) and b) below.
NOTE Refer to ISO 10438-1:2007, Annex F.
a) The working capacity between the minimum operating level (key item 3 in ISO 10438-1:2007, Figure F.1)
and the suction-loss level (key item 4 in ISO 10438-1:2007, Figure F.1) shall be sufficient for at least
3 min of normal flow.
b) The rundown capacity shall allow for all of the oil contained in all of the components, bearings housings,
rundown tanks, control elements and vendor-furnished piping that drain back to the reservoir. The
rundown capacity shall also allow for at least an additional 10 % of these volumes for the purchaser's
interconnecting piping.
NOTE Rundown can cause some backup in the drain lines entering the reservoir.
4.4.7 Heating
z If specified, an electric heater shall be furnished in accordance with the following.
a) If an electric heater is specified, a thermostatically controlled, removable electric immersion heating
element shall be provided for heating the charge capacity of oil before start-up in cold weather. The device
shall have the capacity to heat the oil in the reservoir from the specified minimum site ambient
temperature to the manufacturer's required start-up temperature within 12 h. Heater elements shall be
2)
sheathed in austenitic stainless steel or incoloy ; copper or copper-bearing materials shall not contact
the oil. A level interlock device shall be furnished.
Electric immersion heaters should be level interlocked by the purchaser to be de-energized when the oil
level drops below the minimum operating level.
For heating the lube oil to minimum starting temperature, many factors, including lube pump start-up
minimum oil temperature, equipment minimum oil temperature, circulating heat loss, etc., shall be
considered. Many of these factors are the responsibility of the installing contractor and should be
coordinated with the console designer. Insulation, location and heat-tracing requirements shall be
considerations of the installation.
2 2
b) Direct-contact electric heaters shall have a maximum watt density of 2,32 W/cm (15 W/in ).
z c) If specified, the heater shall be installed in a manner that allows the heater(s) to be removed during
operation.
d) The hot section of the heater element shall be located a minimum of 50 mm (2 in) below the minimum
operating level.
4.4.8 Provision for insulation
z If specified, reservoirs shall be fitted with insulation clips. The purchaser shall furnish and install the insulation.
2) Incoloy is an example of a suitable product available commercially. This information is given for the convenience of
users of this part of ISO 10438 and does not constitute an endorsement by ISO of this product.
8 © ISO 2007 – All rights reserved
ISO 10438-3:2007(E)
4.4.9 Plugged connections
z If specified, each reservoir shall be provided with one threaded and plugged connection above the rundown oil
level of at least DN 25 (NPS 1). This connection may be used for such services as purge gas, makeup oil
supply and oil conditioner return.
4.4.10 Special features
z 4.4.10.1 If specified, a clearly accessible ladder with extended handrails and non-skid working surface
shall be provided.
z 4.4.10.2 If specified, handrails around the perimeter of the reservoir top shall be provided.
z 4.4.10.3 If specified, non-skid surface decking shall be provided on the top of the reservoir.
4.4.10.4 For equipment mounted on the reservoir, the reservoir shall provide sufficient structural stiffness
to properly support the equipment.
4.4.10.5 If the reservoir top is used as a personnel access area, it shall be designed to withstand a live
load of 1 100 N (250 lbf) without permanent distortion.
4.4.11 Materials
4.4.11.1 Unless otherwise agreed upon between the purchaser and the vendor, reservoirs and all
appendages (except ladders and handrails) welded to reservoirs shall be fabricated from austenitic stainless
steel.
4.4.11.2 Reservoir nozzle connections shall be as specified in the piping section for oil service.
(See Clause 5.)
4.4.11.3 Where reservoirs are integral with equipment or equipment baseplates, and where stainless steel
inserts or cladding is not practical, coated carbon steel is acceptable upon purchaser approval.
NOTE Certain equipment, such as reciprocating compressors or gearboxes, that use crankcases or casings as
reservoirs might be available only in alternate materials, such as cast iron.
4.4.12 Grounding
The reservoir shall be grounded either by grounding clips attached to the reservoir (for free-standing
reservoirs) or through the attached base structure. In either case, two grounding clips or pads diagonally
opposed to each other are required. The pads shall accommodate a 13 mm (1/2 in UNC) bolt.
4.5 Pumps and pump drivers
z 4.5.1 The oil system shall include an oil pump suitable for continuous operation. The purchaser shall specify
whether centrifugal or rotary pumps shall be used. If specified, pumps shall conform to ISO 13709 or
ASME B73.2 or ASME B73.3 for the centrifugal pumps and to API STD 676 for rotary pumps.
NOTE For the purposes of this provision, API STD 610 is equivalent to ISO 13709.
4.5.2 Each pump shall be driven separately.
4.5.3 Unless otherwise specified, the main oil pump (unless it is shaft-driven) shall be motor-driven.
When primary and standby pumps are motor-driven, it is recommended that the purchaser supply electric
feeds from independent sources.
ISO 10438-3:2007(E)
z 4.5.4 If specified, or required by the lubricated equipment supplier, an electric-motor-driven standby pump
shall be provided for start-up and/or main-pump failure backup.
NOTE Standby pumps are not always required. Some equipment, such as equipment utilizing ring-oiled bearing
lubrication, might not require pre-priming and use of a standby pump.
z 4.5.5 Motors shall comply with the area classification and shall comply with NEMA MG1 or applicable
part(s) of IEC 60034.
“C-flanged” motors may be used for motors equal to or below 7,5 kW (10 hp).
4.5.6 The minimum criteria given in a) through c) shall be used when sizing pumps.
a) In all cases, pumps shall be sized to deliver the required capacity when pumping lube oil at the highest
temperature and the corresponding minimum viscosity (see 4.5.8).
b) Each pump (main or standby) shall be capable of supplying the normal oil flow required by the equipment
plus 20 % of the normal oil flow.
c) Rotary pumps shall be capable of passing the total flow, as established in b), at the pressure-limiting
valve set pressure while not exceeding 90 % of the pump manufacturer's maximum differential pressure
rating at the minimum operating viscosity. The pump shall also be capable of operating continuously at
the normal flow, pressure-limiting valve set pressure and minimum operating viscosity.
NOTE This selection criterion is required to avoid pump rotor contact during operation under extreme conditions.
4.5.7 The normal operating capacity of the centrifugal pumps shall be within 50 % to 110 % of their best
efficiency point. From their normal operating point to shutoff, centrifugal pumps shall have a continuous rise in
head of at least 5 % and, with the installation of a new impeller, shall be capable of a future increase in head
of at least 10 %.
4.5.8 Pump drivers shall be sized in accordance with a) or b) as applicable.
a) Centrifugal pumps shall deliver the specified system pressure across the pump's stable flow range when
the temperature of the pumped oil is 10 °C (50 °F).
b) Rotary pumps shall be capable of operating at the specified pump pressure-limiting valve setting
(including accumulation) when the temperature of the pumped oil is 10 °C (50 °F).
4.5.9 Check valves shall be provided on each pump discharge to prevent the flow of oil backwards through
a standby or idling pump.
Shaft-driven pumps may use a drilled check valve or an orificed line to prime the pump (see ISO 10438-
1:2007, 4.5.6).
4.5.10 For rotary-pump systems, the vendor shall furnish external pressure-limiting valves that shall be
installed on the pump or in the piping supplied by the vendor. This valve shall not be used for pressure control.
Pressure-limiting valve settings, including an allowance for accumulation, shall be determined after all of the
possible equipment and component failures are considered. The settings shall protect the oil-system
components and piping. Fully accumulated pressure cannot exceed 110 % of the system design pressure.
4.5.11 Oil-pressure limiting valves (PLV) shall be pressure-modulating devices (as opposed to snap-acting or
pop-type safety relief valves) with a pressure increase proportional to flow above the valve cracking pressure
(that is, the pressure at which the valve begins to open). These devices shall be mounted external to the
reservoir and shall operate smoothly, without chattering and without causing a drop in supply pressure to the
equipment. Pressure-limiting valve piping shall be sized for the full flow of each pump; the valves shall not
chatter and the piping shall not vibrate. The minimum pressure-limiting valve crackin
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