Gs 91011_en.pdf

Page 1 of 10 GS 91011:2019-08

BMW Group Standard

Released

GS 91011 2019-08 Replacement for GS 91011:2015-06

Special characteristics Marking in technical regulations, drawings and release documents

Author, Standardization department Martin Ruppel Print-outs are not subject to the change service. The user of this document is under obligation to verify its current validity. Continued page 2 to 10

© BMW Group - All rights reserved

Page 2 of 10 GS 91011:2019-08 Contents 1 2 3 3.1 3.2 3.3 4 4.1 4.2 5 5.1 5.2 5.3 5.4 6

Scope and purpose ............................................................................................................................................................... 2 Normative references ........................................................................................................................................................... 2 Terms, definitions .................................................................................................................................................................. 3 Technical regulation .............................................................................................................................................................. 3 Special characteristics .......................................................................................................................................................... 3 Categories of special characteristics ................................................................................................................................ 3 Identification as a special characteristic ........................................................................................................................... 4 Reasons for identification as a special characteristic ................................................................................................... 4 Consequences of designation as a special characteristic .......................................................................................... 4 Specifications for marking special characteristics of components .......................................................................... 5 General information ............................................................................................................................................................... 5 Marking special characteristics in documents ............................................................................................................... 5 Stating the number of special characteristics ................................................................................................................ 7 Representation of the special characteristics in a summarizing table ..................................................................... 8 Specifications for marking electrical/electronic (E/E) functions ............................................................................... 10

Foreword The German version is binding. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. This Group Standard has been coordinated with the responsible departments of the BMW Group. Author, approver and reviewer are stored in and can be retrieved from the TEREG system master data. Amendments The following amendments have been made to GS 91011:2015-06: − −

title changed; Group Standard completely revised.

Previous editions BMWN(S) 11369.0: 1993-11, 1996-06, 1997-03 GS 91011: 2008-05, 2009-03, 2012-04, 2015-06 1

Scope and purpose

This Group Standard regulates the uniform marking of special characteristics in the technical regulations, drawings and release documents. This Group Standard describes the minimum requirements. Any requirements beyond this can be individually managed by the specialist department. 2

Normative references

GS 90000-1 GS 90036 GS 98000

Technical regulations; Terms, structure Identification of parts; Rules for definition and implementation of traceability of parts Statistical capability studies

Page 3 of 10 GS 91011:2019-08 3

Terms, definitions

3.1

Technical regulation

Definition in accordance with GS 90000-1. 3.2

Special characteristics

All product and process features are important and shall be complied with. Certain features are particularly important and require additional measures/documentation, they are referred to as special characteristics. Noncompliance with special characteristics, or excessive deviation about the target value can have an impact on product safety (operating safety and safe use), compliance with specifications from authorities, and the function, installability and changeablility, or they can considerably restrict the service life of the components in question. Special characteristics are divided up into three categories, see section 3.3. 3.3 3.3.1 L

Categories of special characteristics L-marking legal

Characteristics and functions necessary for meeting approval-relevant legislation and specifications from authorities at the time of putting the product into circulation shall be marked with an L-marking. According to the process description and in agreement with specialist department “Type Approval, Development Abroad, Conformity of Production”, the approving specialist department defines which properties and functions shall be marked with special characteristic L. Changes to these features shall be agreed with the specialist department “Type Approval, Development Abroad, Conformity of Production”. The list of features subject to mandatory L-marking is available on the Intranet via the homepage of the specialist department “Type Approval, Development Abroad, Conformity of Production” or can be requested from the commissioning specialist departments. Table 1: Examples of L-marking Special characteristic L 3.3.2 S

Criterion

Example

Registration- or homologation-relevant

Locking system, headlight, vehicle emissions, recycling rate

S-marking safety

Properties and functions for ensuring product safety (operating safety and safe use), noncompliance with which can lead to a risk for life and limb. Properties and functions that can affect the safety of product users, other road users or other persons in indirect way are safety-relevant. According to the process description, the approving specialist department defines which properties and functions shall be marked with special characteristic S. Table 2: Examples of S-marking Special characteristic

S

Criterion

Example

Failure of the brake system or steering system

Brake line / steering gear

Sudden failure of the drive force

Ignition failure

Leaking of hazardous goods / risk of fire

Leak in fuel tank

Page 4 of 10 GS 91011:2019-08 3.3.3 F

F-marking function

Key functional and production-related properties, whose incorrectness or absence can lead to high warranty costs (rework, cancellation, reduction, compensation). According to the process description, the approving specialist department defines which properties and functions shall be marked with special characteristic F. These include essential functional requirements (e.g. tolerances, 4 F - Form, Fit, Function, perFormance), production engineering requirements (e.g. critical production process) and requirements, noncompliance with which cause major economic damage to the customer or supplier. Special characteristic

F

4

Criterion

Example

Essential functional requirement

Tolerance of brake disk

Production-related requirement

Incorrect bolted connection of rear spoiler trim (missing bolts)

High economic loss for customers

Wrongly or not at all installed water drain channel

Identification as a special characteristic

Those properties/functions that have an impact on product conformity, product liability and product safety are classified as special characteristics. The marking of special characteristics indicates that special attention shall be paid to compliance with these properties. 4.1

Reasons for identification as a special characteristic

The designation of a special characteristic has consequences in the downstream processes (see section 4.2). The special characteristic information is also relevant in the event of a change of supplier or production location. It shall thus be ensured that the special characteristics are shown in all pertinent documents (e.g. requirements specifications, drawings, 3D models, technical product descriptions or documents for test and process planning). EXAMPLE Marking of a special characteristic in the service instructions. For safety reasons, the detent of the headlight plug is a special characteristic and shall be 100% ensured. This also applies to servicing and shall therefore also be marked in the service instructions. The designation of special characteristics and their coupling with component tracking (see section 4.2.2) enable the required vehicles to be systematically pinpointed in the event of recalls due to production faults, thus reducing the resulting costs. BMW is subject to the information disclosure obligation in the proof-providing process. The focus here is on product conformity, product liability and product safety. Consistent marking of the special characteristics enables the quick identification of relevant documents and components. 4.2 4.2.1

Consequences of designation as a special characteristic Compliance with properties

Particular attention shall be paid to compliance with characteristics marked with a special characteristic. According to GS 98000, stricter requirements apply to the capability values for special characteristics. If no proof of process capability can be provided for the special characteristics, compliance with the special characteristics shall be demonstrated and documented via a 100 % test. 4.2.2

Component traceability

Each component on which a special characteristic is indicated is assigned to a component tracking class according to its feature category (L / S / F). Component traceability is regulated in GS 90036.

Page 5 of 10 GS 91011:2019-08 4.2.3

Risk management

For all scopes classified as safety-relevant a risk filter or an FMEA (Failure Mode and Effects Analysis) is performed in the scope of risk management in order to identify potential risks. These shall be assigned measures in the risk management tool and their implementation shall be recorded. 4.2.4

Changes to properties

The approving specialist department ensures that if the characteristic properties are changed, actions are taken in accordance with its process descriptions. For all scopes marked with L, it shall also be ensured that the “Homologation” process (ItO 02.02.04) is taken into account in the event of changes to marked properties. 5

Specifications for marking special characteristics of components

5.1

General information

The special characteristics are marked in all technical regulations, drawings and release documents of the BMW Group with the code letter L / S / F, depending on the category of the characteristic. For the purpose of differentiation, unique, countable numbering for each characteristic within each category of characteristics shall be implemented within a document, and/or for each part number. NOTE Consecutive numbering is recommended for each characteristic category. The special characteristics shown shall be summarized in a table, see section 5.4. The total for each characteristics category (e.g. in the document or for each part number) shall be shown, see section 5.3. 5.2 5.2.1

Marking special characteristics in documents Marking special characteristics in text documents

In text documents, e.g. Group Standards (GS) and requirements specifications (LH), special characteristics shall be marked. The characteristics categories L / S / F with unique, countable numbering are specified before the characteristic for each characteristic category, see Figure 1. After each of the three tests: L1 - the steering lock shall be able to be unlocked and locked again. L2 - the steering shaft shall be able to revolve without any problems. L3 - the torque required to unlock the lock shall be less than 2,45 Nm.

Figure 1: Example showing marking of special characteristics in text documents For details on citing the table with the list of special characteristics, see section 5.4.

Page 6 of 10 GS 91011:2019-08 5.2.2

Marking special characteristics in graphics

The special characteristics shall be marked in drawings, the graphics content of text documents and 3D models. The characteristics categories L / S / F with unique, countable numbering for each characteristic category are specified before the characteristic. A semicolon is inserted between the numbering and the characteristic. In drawings, the special characteristics shall be marked with a “Zeppelin”. Category with unique, countable numbering Feature indication

S1; 13,7 ± 0,3

Semicolon Figure 2: Marking of special characteristics in drawings with “Zeppelin” (example) Zeppelin refers to the elliptical frame around the feature indication. It serves as a visual highlight. The Zeppelin frame is black, the background colorless, see Figure 2. If direct marking of the characteristic with a “Zeppelin” is not possible (e.g. form and position tolerances, surface roughness, text) the category with unique, countable numbering shall be marked with a “Zeppelin” in close proximity of the special characteristic, see Figure 3. Reference to the special characteristic shall be indicated by an arrow. If the reference is clear, the arrow can be omitted. F16 Ø0,08 C Ø0,05 A-B ― Φ Ø0,25 A-B C D ― Ø0,01 ⊥

F15 F14

Figure 3: Marking of position tolerances as special characteristic In graphic content of text documents and in 3D models, the special characteristics can additionally be marked with a “Zeppelin”. Within a 3D model, marking shall be consistent.

L1;66 ±0.5

Special characteristics without “Zeppelin” marking

Figure 4: Example marking of special characteristics in 3D models

In 3D models special characteristics can additionally be marked with a “Zeppelin”.

Page 7 of 10 GS 91011:2019-08 5.3 5.3.1

Stating the number of special characteristics Statement of the number of special characteristics on the cover sheet of the document

On the cover sheet of the technical regulations, the individual feature categories of L / S / F shall be indicated with the number occurring in each document. This number shall be indicated as an index.

Marking of special characteristic Category: L Number: 3

Figure 5: Marking of special characteristics on the cover sheet (example, Group Standard)

Page 8 of 10 GS 91011:2019-08 5.3.2

Stating the number of special characteristics in the header of the drawing

In the header of the drawing, the individual characteristic categories L / S / F shall be indicated, including the number of occurrences in each document. This number shall be indicated as an index. NOTE Until the characteristics categories S and F and the number of occurrences can be managed in PRISMA, the details for all categories shall be shown in the form of a drawing comment in the drawing, near the text box. Bayerische Motoren Werke Aktiengesellschaft

Methode 1 Oberflaechen: Form-und Lagetoleranzen:

ISO 128

VDA 2005 DIN EN ISO 1101

Rohteil Nr./Zwischenzustand:

-

Alle Rechte vorbehalten/ALL RIGHTS RESERVED

Lieferant:

Erstellt mit/PRODUCED ON

Datum

Name

Datum

Name

Gez.

-

-

Fertigg. gepr.

-

-

Gepr.

-

-

Werkst. gepr.

-

-

Gesehen

-

-

Funkt. gepr.

-

-

Kennz. nach GS 91011

Marking of special characteristic

L

Massstab SCALE

CATIA 5.14SP5P

Gewicht mit Toleranz/WEIGHT WITH TOLERANCE nach GS 90006

Blatt von - Blatt

3 DO NOT SCALE

Ersatz fuer

-

Ersetzt durch

-

Category: L Number: 3

Figure 6: Identification marking of special characteristics in the title block of the drawing (example) 5.3.3

Stating the number of special characteristics for 3D models

In PRISMA, the individual characteristic categories used L / S / F shall be stated with the number of occurrences in the scope of the release. NOTE Until the characteristics categories S and F and the number of occurrences can be managed in PRISMA, the details for all categories shall be shown in the form of an office supplement. 5.4 5.4.1

Representation of the special characteristics in a summarizing table Summarizing table of special characteristics

In technical regulations, drawings and release documents all special characteristics shown shall be stated along with the characteristic category L / S / F and unique, countable numbering using a summarizing table. In addition, the summarizing table states the specific purpose, and provides further information on the implementation (location of implementation/type of implementation/requirements for implementation) for each characteristic. The technical implementation is documented by the specialist department providing the definition, as are the amendments, which shall be agreed upon in advance with the releasing specialist department. Table 3 is an example demonstrating the implementation in a drawing. It may vary depending on the document type. The minimal requirements for the summarizing table are shown in Table 3 with the bold frame. Further information can be added as required.

Page 9 of 10 GS 91011:2019-08 Table 3: Indication of special characteristics on a drawing (example) Number of features by category on the drawing 3 1 1 Zone4)

Page4)

cpk = 1,41

F2

1

Machine-readability

F3

1

L

S

F

Feature

Specific purpose

Location of implementation1)

Type of implementation2)

Requirements for implementation3)

L1

-

-

Position of bore

Positioning in measuring fixture

Supplier

Ensure tolerance Prevent the embossing from being filled

L2

-

-

Production

Paint quantity in embossing

Ensure readability of embossing

Supplier Paint shop

cpk = 1,41

L3

-

-

Geometry

Coordination of all function-relevant changes with the specialist department “Type Approval, Development Abroad, Conformity of Production”

Releasing specialist department

Check of valid homologation

100 %

-

-

-

S1

-

Freedom from cracks of entire component

Exclusion of component breakage

Supplier

Proof of freedom from cracks

100 %

-

-

Evenness

Ensure capability of being engraved

Ensure tolerance

SPC5) / cpk = 1,67

H21

1

-

-

F1

L = legally relevant S = safety-relevant F = function-relevant 1) Who? / Where? 2) What? 3) How? / How many? 4) specifications on the drawing regarding where to be found 5) statistical process control

Foundry Supplier Production

Page 10 of 10 GS 91011:2019-08 5.4.2

Summarizing table of special characteristics in text documents

In text documents, the summarizing table shall be maintained in the document. 5.4.3

Summarizing table of special characteristics in drawings and release documents

The summarizing table shall be maintained in PRISMA for each part number. It contains the special characteristics for all release documents (e.g. 3D model, office supplement, drawing) that are maintained with this part number. NOTE Until the implementation of the summarizing table in PRISMA is available, an appropriate summarizing table is a constituent part of the release documents, it is maintained in the 3D model or in the drawing. If there is insufficient space in the drawing sheet, the summarizing table can be maintained in a separate document. An appropriate reference shall be stated in the drawing. For applicable documents (e.g. quality specifications), the special characteristics are summarized in a separate summarizing table in the appropriate document. 6

Specifications for marking electrical/electronic (E/E) functions

The L / S / F marking of E/E functions occurs in the scope of documenting the E/E architecture in the AIDA (architecture, integration and design for automotives) function list (FL). The marking is defined by the function owner stated in the AIDA FL in collaboration with the specifying specialist department (e.g. specialist department for homologation), see Figure 7.

Figure 7: Entry in AIDA FL EXAMPLE L-marking in the AIDA FL Function

Vehicle Sound Generator

Identification mark

L

Approval-relevant characteristics influenced by software

that

can

be

− − −

Minimum sound pressure level Frequency range Third bands