Click here to make your Home Page

Page Title: Chemical/Nuclear Hazard Analysis
Back | Up | Next

Click here for thousands of PDF manuals




Information Categories
.... Administration
Food and Cooking
Nuclear Fundamentals


EPA's Chemical Process Hazard Analysis (40 CFR 68, "Chemical Accident Prevention
Provisions," and 29 CFR 1910.119 [and 1926.64], "Process Safety Management"),
DOE's nuclear facility safety analysis (10 CFR 830, Subpart B, "Nuclear Safety
Emergency Preparedness Hazard Assessment (DOE O 151.1, "Comprehensive Emergency
Management System", and
EPA's Environmental Impact Statements (40 CFR Parts 1500-1508, "Council on
Environmental Quality" and DOE's 10 CFR 1021, "National Environmental Policy Act
Implementing Procedures").
Chemical/Nuclear Hazard Analysis. Chemical process hazard analysis (PrHA) is required by
both OSHA (29 CFR 1910.119, and 29 CFR 1926.64) and EPA (40 CFR 68) for facilities
exceeding established hazardous chemical threshold quantities. These two chemical safety
regulations have essentially the same hazards analysis requirements (i.e., scope, techniques, and
required documentation), although there are slight variances in the threshold quantities for
various chemicals listed in each of these regulations. Both regulations also share similarity to 10
CFR 830, Subpart B that requires that a documented safety analysis (DSA) be prepared for
certain DOE nuclear facilities. The PrHA and the DSA serve as the primary analysis of facility-
level hazards, and both involve (1) identification of hazardous material or radionuclide
inventories; (2) implementation of formal hazard analysis techniques that are commensurate with
facility complexity; (3) identification of systems and equipment vital to safety; (4) formal
documentation of findings; and (5) periodic updates of hazard analysis information.
This overlap is recognized in DOE-STD-3009-94, Preparation Guide for U.S. Department of
Energy Nonreactor Nuclear Facility Safety Analysis Reports, which points out that many of the
requirements addressed in the OSHA PSM standard are directly parallel to DOE nuclear safety
analysis topics. Because of the apparent similarities, it is reasonable to conduct one
integrated hazard analysis at nuclear facilities at which all three regulations apply.
However, DOE goes beyond the PrHA requirements of OSHA/EPA by requiring DSAs to
evaluate potential consequences and estimation of the likelihood of accidents, both with and
without the aid of protective features (e.g., physical barriers, engineered controls, etc). Since a
DSA is more encompassing, it should be used as the primary vehicle for conveying the
results of an integrated chemical/nuclear hazard analysis at nuclear facilities.
Emergency Preparedness Hazard Assessment. The purpose of an Emergency Preparedness
Hazard Assessment (EPHA) is to help define a facility's emergency management plan and the
associated Emergency Planning Zone. The EPHA requires an evaluation of traditionally defined
"accidents" as well as those arising from external causes and malevolent acts. An analysis of
challenges to, and failures of, barriers protecting hazardous or radioactive materials is used to
determine the events and conditions that could result in the release of each hazardous material
and the magnitudes of those possible releases.
An EPHA is required by DOE O 151.1A, Comprehensive Emergency Management System, for
facilities exceeding certain chemical or radiological hazard thresholds. For hazardous chemicals,
this includes the lowest of Threshold Quantities (TQs) in 29 CFR 1910.119 (and 1926.64) or 40
CFR 68.130, or the Threshold Planning Quantities (TPQs) listed in 40 CFR 355. For chemicals
not listed, the Reportable Quantities (RQs) for hazardous substances listed in 40 CFR 302.4 may
be used. For radioactive materials, the limits are listed in 10 CFR 30.72, Schedule C.
Because of these thresholds, an EPHA is required for a broad set of facilities that encompass (1)
nuclear facilities subject to 10 CFR 830, Subpart B; (2) non-nuclear facilities subject to OSHA

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business