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HIGH
MODERATE
LOW
4.4 HAZARD ANALYSIS
Table 4-3 Chemical Toxicological Consequence Bin Thresholds
4.4.1 Hazard Identification And Description
concentration > ERPG-2 concentxation > ERPG-3 prompt death
not applicable not applicable serious injury
concentraton I ERPG-2 concentmtion S ERPG-3 < MODERATE
NSTR-011-98 (Ref. 1) identifies the radioactive materials and other hazardous materials
present in the Building 991 Complex as well as identifying hazards and energy sources that may
contribute to a radiological or toxicological release. Initial hazard identifkation for the complex
was accomplished by reviewing radiological and other hazardous material inventories currently
in the facilities, by interviewing facility personnel for additional hazardous materials that may be
present during the conduct of Building991 Complex activities, and by performing facility
walkdown inspections.
A standardized general hazard checklist presented in the SARAH was used during the
walkdown to identify the general hazard categories present in the Building 991 Complex. The
SARAH (Ref. 9) describes the checklist and its application. The hazards specific to the
Building 991 Complex were identified in the general hazard checklist. Of the 13 hazard
categories appearing on the general checklist., 11 hazards were found to be present in the
Building 991 Complex.
The general hazards identified were then summarized in more detail in a hazard
description table in NSTR-011-98. The hazard description in the table and the corresponding
text provided sufficient detail to justify the classification of identified hazards as Standard
Industrial Hazards (ie., hazards which only lead to occupational injuries or illnesses and which
have limited impact on postulated accident. initiation frequency, accident mitigation, and
accident consequences). Standard Industrial Hazards were considered to be sufficiently
controlled by the set of SMP elements listed in Chapter 3, SNety Management Programs, and
were not analyzed furlher in the NSTR-011-98. Hazards which were not classified as Standard
Industrial Hazards were carried forward into the Safety Analysis.
Revision I
%!ember 1999
4-1 1
Building 991 Complex FSAR
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