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Simple test of a mechanical press control system

Summary An OSHA region proposed a definition of a simple test for a mechanical press control system. OSHA agreed that the test should show normal stopping remained effective and another stroke could not start until an induced fault was fixed, while allowing employers to choose a suitable procedure. OSHA archives the memo.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1975-08-11
Date issued
August 11, 1975
Status
Archived by the agency
OSHA labels this an archive document and warns that it may no longer represent OSHA policy.
Status last verified October 10, 2026

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NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

August 11, 1975

MEMORANDUM TO: JOSEPH A. REIDINGER ASSISTANT REGIONAL DIRECTOR/OSH

SUBJECT: 29 CFR 1910.21(b)(13), Simple Test: definition of

This memorandum is in response to your letter dated June 20, 1975, requesting concurrence with your interpretation to Mr. Jerry L. Addy, Commissioner, Iowa Bureau of Labor, Des Moines, Iowa, concerning the subject definition.

In your interpretation of "simple test" to Mr. Addy, you state that it, "would be any action that the employer can take to either deactivate the control system or to create a failure in some part of the control system, and then demonstrate, (1) that normal press stopping has not be affected and, (2) the initiation of a successive stroke is not possible until the purposely introduced test failure has been corrected." This is a comprehensive definition and any attempt to elaborate or expand on this definition would result in setting forth procedures for all machines that may not always be applicable. Therefore, the intent of this standard is to allow the employer to establish his own testing procedures that will satisfy these requirements.

Sincerely,

Barry J. White
Associate Assistant Secretary
for Regional Program

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