Management Oversight and Risk Tree (MORT): a new system safety program Page: 1 of 17
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The Management Oversight and Risk Tree (MORT) - A New System Safety Program
J. L. CLARK
Senior Engineer, System Safety Development Center, Aerojet Nuclear Company
ABSTRACT
This paper deals with experiences'of Aerojet Nuclear Company (ANC), in
development and implementation of a system safety program for ANC and for
the Energy Research and Development Administration (ERDA). Aerojet Nuclear
is the prime operating contractor for ERDA, formerly AEC, at the Idaho
National Engineering Laboratory.
The ERDA sponsored "MORT" system safety program, developed by W. G. Johnson,
is described along with the process whereby formal system safety methods are
incorporated into a stable organization. Specifically, a discussion is given
of:
1. Initial development of MORT. . Pgn y t io of
[hr Unitd Slain nor the Gteor en tr-Eni eer
* 2. Pilot program trials conducted at ANC. tiNttrauiooa
rthe
3. Implementation methodology.
frin l pri rarely n ti h a uM would not
4. Reaction of the ANC organization.
INTRODUCTION
The Management Oversight and Risk Tree (MORT)(l) is a system safety program
(Figure 1) designed to:
1. Prevent safety related oversights, errors, and omissions.
2. Result in risk quantification and referral of residal risks to proper
management levels for appropriate action.
3. Optimize allocation of resources to the safety proprnam and to indivi-
dual hazard control efforts.
The intent of this paper is two-fold, to introduce the I ORT system safety
program and to discuss experiences of Aerojet Nuclear Company (ANC), in
development and implementation of a system safety program for ANC and for the
Energy Research and Developmeit Administration (ERDA), forniitly the Atomic
Energy Commiision.
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Clark, J. L. Management Oversight and Risk Tree (MORT): a new system safety program, article, April 30, 1976; Idaho Falls, Idaho. (https://digital.library.unt.edu/ark:/67531/metadc872581/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.