Transcript The ORR and Safety Basis

The ORR/RA and
the Authorization Basis
May 2005 Revision
Safety Analysis Reports,
Technical Safety Requirements, Authorization
Agreements, S/RIDs, Basis for Interim Operations,
Permits, etc...
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Upon successful completion of this topic, you
should be able to:
Describe what constitutes a facility’s Authorization Basis.
Describe how the Authorization Basis relates to the ORR/
RA.
Describe how the ORR/RA checks implementation of the
Authorization Basis.
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The Authorization Basis
• Authorization Basis means the combination of information
relating to the control of hazards at a nuclear facility
(design, engineering analyses, and administrative controls)
upon which DOE/NNSA depends for its conclusion that
activities at the facility can be conducted safely.
• Basis by which DOE/NNSA accepts the risk associated
with permitting the facility or activity to operate.
DOE 5480.23
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Authorization Basis
 Those aspects of the design of facility Structures,
Systems, and Components (SSCs) and operational
requirements relied upon by DOE/NNSA to
authorize operation.
 These aspects are considered to be important to the
safety of facility operations.
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Authorization Basis (continued)
 The Authorization Basis is described in documents such as:
- Facility DSA/SARs/BIOs/HAR/ASA and other safety analyses;
- TSRs / OSR / ABCD.
 Safety Evaluation Reports (SERs).
 Facility-specific implementing mechanisms to comply with
DOE/NNSA Orders, policies, or other contract provisions
(infrastructure program).
 Permits . . .
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The Directives and Guides to
Implement the Nuclear Safety Rule
 Nuclear Safety Rule 10 CFR 830.200 superceded, but did
not invalidate for existing AB documents:
 DOE 5480.22, Technical Safety Requirements;
 DOE 5480.23, Nuclear Safety Analysis Reports;
 DOE 5481.1B, Safety Analysis and Review Systems.
 Guidance in DOE STDS 3009; 3011; 1120 . . . .
 DOE Guides 421.1-1/2 (Crit Safety, DSA); 423.1-1 (TSR);
424.1-1 (USQ) . . .
 Acceptable Methodologies . . .
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Definition: Safety Analysis
A documented process to:
 Define the work within the scope of Activity or Facility
 Provide a systematic identification of hazards within a
DOE/NNSA operation, activity or facility.
 Analyze and evaluate potential accidents and their
associated risks.
 Evaluate measures (hardware, procedures, systems) to
reduce the probability and/or consequences of potential
accidents.
 Develop and define the engineered (SSC) and
Administrative controls.
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Basis for Interim Operation (BIO)
 Establishes interim safety basis until SAR and TSRs per
O 5480.22 and O 5480 .23 are developed and approved.
 Single document applying to both O 5480.22/.23.
 DOE-STD-3011 provides guidance.
 Establishes interim safety basis.
 Utilizes existing material (when possible) by reference.
 10 CFR 830.200 Limits Applicability:
 BIO replaced by DSA, or
 Facility mission complete.
DOE-STD-3006 & 5480.23
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Technical Safety Requirements (TSRs)
 The TSR and its appendices constitute an agreement or
contract between the DOE/NNSA and facility operating
management regarding the safe operation of the facility.
 DOE G 423.1-1 Defines Form and Content expectations.
 Cannot be changed without DOE/NNSA approval.
 OSRs have similar expectations.
 Rigorous Implementation Expectations!
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Technical Safety Requirement Format
• Safety Limits;
• Operating Limits:
– Limit Control Settings (LCS),
– Limiting Conditions for Operation (LCO);
• Surveillance Requirements;
• Administrative Controls.
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Safety Evaluation Reports (SERs)
• The DOE/NNSA:
– document review of an SAR with a written Safety
Evaluation Report (SER);
– impose conditions of approval, such as constraints on
TSRs, or alterations to other commitments.
• Implementation expectations for SER same as
DSA/TSR!
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ORR Focus re: Safety Documentation
• What is the Authorization Basis for this activity
and is it adequately implemented?
• If a SAR or DSA and TSRs, are they current;?
• Have all aspects of the Authorization Basis been
approved by appropriate authority? Annual
updates current?
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ORR Focus re: Safety Documentation
• Are the requirements and assumptions of the
Authorization Basis implemented?
–
–
–
–
–
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Structures, Systems, Components operable?
Surveillances sufficient and current?
Modifications controlled, status known?
Procedures complete?
Infrastructure programs in place? Administrative
controls complete?
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Is the Safety Envelope in Place?
 All Limits, Controls, and Requirements:
–
–
–
–
Identified;
Understood;
Implemented;
Maintained?
 Controllers/Managers/Supervisors of Operations
must know the condition of their safety envelope!
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The ORR/RA Role in the Safety Basis
 The ORR/RA is not the mechanism by which the
Authorization Basis is approved.
 Rather, the ORR/RA team must evaluate the
activity/facility/operation against the description,
requirements, and assumptions:
– within the safety envelope;
– incorporates all of the applicable requirements of the
Authorization Basis.
• Verify accurate and continuous implementation!
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