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SEMI S20-0303 © SEMI 2003 6 NOTICE: SEMI makes no warranties or representations as to the su itability of the standard set forth herein for any particular application . The determinati on of the suitability o f the stand…

SEMI S20-0303 © SEMI 2003 5

NOTE 17: Supplier standard color coding may be any colors

including black and white.

Table 1 Recommended Identifying Color Matrix

Type of Energy Text/Background

Electrical Black/Orange

Compressed Gases White/Blue

Pressurized Liquids White/Green

Chemical Black/Yellow

Mechanical White/Black

Thermal Red/White

Ionizing Radiation Purple/Yellow

Non-Ionizing Radiation (Laser,

RF, UV, IR, etc.)

Black/Red

NOTE 18: Recommended color shades may be found in

standards such as ANSI Z535.1, Colors for Safety Labels ISO

3864 Safety Colours & Safety Signs or other international

equivalent for uniformity.

9.3.1 Colors (whether from the recommended list or

from the suppliers’ standard color coding) should be

assigned depending on the type of energy being

isolated, not the hazard being controlled. For example,

a circuit breaker that removes power from a robot

should have a unique identifier on the graphical

representation color-coded as Electrical, not

Mechanical energy.

9.4 Graphical reference guides should be either

electronic media or made from clean room compatible

materials that can be located at the equipment or can be

carried there during the performance of the tasks.

9.4.1 The supplier may offer optional media as part of

the purchase.

NOTE 19: Certain types of electronic devices (e.g.,

broadcasting handheld computers) may be restricted from use

in clean rooms due to system interference issues.

9.4.1.1 If the reference guide is intended to be

displayed electronically, the display device should be

conveniently available to personnel while they perform

the particular task.

9.4.1.2 The supplier may also specify that users have

the option to convert the guides to clean room

compatible, color printed versions.

9.5 Each graphical reference guide should be designed

so that it is clearly cross-referenced with its related

maintenance task(s).

9.5.1 Text instructions for operating and verifying the

isolation of each LOTO EID should be in the same field

of view as the graphical representation of that LOTO

EID on the graphical reference guide.

EXCEPTION: In an electronic file, the field of view is

controlled by the screen size and therefore text

instructions and graphics may not be in the same field

of view or may even be connected via hyperlink to each

other.

NOTE 20: One possible design is where the graphical

reference guides each consists of a card or page (perhaps in a

bound collection of reference guides) that can be placed near

the computer or manual and show the steps of the task.

Another possibility is to provide the ability to produce a split

screen display on a computer.

10 Related Documents

10.1 SEMI Standards

SEMI F34  Guide for Liquid Chemical Pipe Labeling

10.2 NFPA Standards

NFPA 70E  Standard for Electrical Safety

Requirements for Employee Workplaces

NFPA 79  Electrical Standard for Industrial

Machinery

10.3 ANSI Standards

ANSI Z244.1  Personnel Protection, Lockout/Tagout

of Energy Sources – Minimum Safety Requirements

10.4 United States Code of Federal Regulations

29 CFR 1910.333b  Working on or Near Exposed

De-energized Parts

OSHA STD 1-7.3 — 29 CFR 1910.147, the Control of

Hazardous Energy (Lockout/Tagout) - Inspection

Procedures and Interpretive Guidance

OSHA document 3120 — Control of Hazardous Energy

(Lockout/Tagout) - 1997 (Revised)

NOTICE: Unless otherwise indicated, all documents

cited shall be the latest published versions.

4 National Fire Protection Association, 1 Batterymarch Park, PO Box

9101, Quincy, MA 02269-9101

5 American National Standards Institute, New York Office: 11 West

42nd Street, New York, NY 10036, USA. Telephone: 212.642.4900;

Fax: 212.398.0023 Website: www.ansi.org

6 Available from Occupational Safety and Health Administration,

U.S. Department of Labor, http://www.osha.gov

NOTICE: SEMI makes no warranties or representations as to the suitability of the standard set forth herein for any

particular application. The determination of the suitability of the standard is solely the responsibility of the user.

Users are cautioned to refer to manufacturer’s instructions, product labels, product data sheets, and other relevant

literature respecting any materials or equipment mentioned herein. These standards are subject to change without

notice.

By publication of this standard, SEMI takes no position respecting the validity of any patent rights or copyrights

asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that

determination of any such patent rights or copyrights, and the risk of infringement of such rights, are entirely their

own responsibility.

RELATED INFORMATION 1

EXAMPLES OF GRAPHICAL REPRESENTATIONS

NOTICE: This Related Information is not an official part of SEMI S20. It was derived from AMD activity, but is

generic and not copyrighted. This related information was approved for publication by inclusion in the ballot and by

vote of the SEMI Standards EHS Committee. It is included to assist the user of the document in understanding what

the graphical representations should provide in the way of information and location identification.

R1-1 Drawings