ML20202J457
| ML20202J457 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/26/1986 |
| From: | Dougherty F TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20202J051 | List:
|
| References | |
| DAP-22, NUDOCS 8607170084 | |
| Download: ML20202J457 (21) | |
Text
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TITLE PREPARATION OF SAFETY SIGNFICAbEE EVALUATIONS NUMBER DAP-22 Revision Prepared Date Reviewed Date Approved Date
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O TABLE OF CONTENTS Section Pooe Co v e r S h ee t......................................................
i Tab l e o f Con t e n t s.................................................
Ii 1.0 P U RP OS E...................................................
I 2.0 SCOPE.....................................................
I 3.0 DEFINITIONS AND RESPONSIBILITIES.........................
I 4.0 I NS TR U CTI O N..............................................
3 5.0 DO CU MENTAT I ON..........................................
5 ATTACHMENTS A
COMANCHE PEAK ADEQUACY PROGRAM SAFETY SIGNIFICANCE EVALUATION A-l Q
B COMANCHE PEAK DESIGN ADEQUACY PROGRAM
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S AFETY SIGNIFICANCE EVALUATION LOG....................
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TN-85-6262/22 ii
1 COMANCE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS 1.0 PURPOSE This procedure defines the scope and methodology applicable to the preparation and opproval of safety significance evaluations required by DAP procedures or the CPRT Program Plan (including Appendix A).
2.0 SCOPE This procedure opplies to evoluotions performed to determine whether a devia-tion (as defined in DAP-2) is safety significant. It may also be opplied in any other circumstance when the DAP is required to determine whether on item is safety significant.
3.0 DEFINITIONS AND RESPONSIBILITIES
.O 3.i o <ini>>
3.1.1 Safety Significance A Safety Significance Evoluotion is a specialized type of engineering evaluation that is a principal means of documenting the conclusion of whether a deviation (as defined in DAP-2) is safety significant and should be classified as a deficiency.
3.1.2 Safety Significant
" Safety-significant," for the purposes of the CPRT Program, is defined to mean that the identified discrepancy, if uncorrected, would result in the loss of capability of the offected system, structure or component to perform its intended safety function. For purposes of the CPRT Program, credit is not allowed for redundancy at the component, system, train or structure level.
A
' U TN-8S-6262/22 Page I of 6
COMANCl-E PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: O SIGNIFICANCE EVALUATIONS This definition, which is employed in the CPRT Program for purposes pf sompte expansion, is more restrictive than that usually applied to the term " safety-significant" for regulatory purposes or in common parlance, in that it ignores redundancies that do exist in real life.
(Compare 10CFR50, Appendix A (introduction, " Single Failure"); 10CFR50.55(e)(l).) Identification of the devia-tion as " safety-significant" for purposes of the CPRT Program, therefore, is not necessarily equivalent to the statement that, in fact, the deficiency, if uncor-rected, would have resulted in unsafe operation.
3.2 Responsibilities 3.2.1 Reviewers Third party design adequacy personnel shall prepare and check the safety significance evoluotions.
Preparation and checking shall be performed by O
different individuals.
3.2.2 Discipline Coordinators Discipline Coordinators shall have the following responsibilities:
o Prepare or cause to be prepared DIR forms when required by results of safety significance evaluation 1
Establish the scope of safety significance evaluations to o
be performed within their respective disciplines l
Ensure that qualified reviewers are assigned to prepare o
t and check each safety significance evaluation Review safety significance evaluations prepared within o
their discipline (Note: discipline coordinator may act as both checker and reviewer) o Sign appropriate DIR forms per DAP-2.
TN-85-6262/22 Page 2 of 6 l
I
COMANCE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Fievision: 0
- r SIGNIFICANCE EVALUATIONS 3.2.3 Design Adequacy Program Manager The DAP Manager shall have the following responsibilities:
o Concur in the results of safety significance evaluations Assign control identification numbers to each completed o
safety significance evaluation using the safety signif-icance evaluation log o
Sign DIR forms in accordance with DAP-2.
3.2.4 Review Team Leader The Review Team Leader shall have the following responsibilities:
i o
Approve safety significance evaluations that conclude on I
item is safety significant o
Sign appropriate DlR forms in accordance with DAP-2 after completion of safety significance evaluations.
4.0 INSTRUCTION 4.1 Scope of Safety Significance Evaluation Discipline Coordinators shall determine the need for and scope of safety significance evoluotions. As a minimum, safety significance evoluotions are required to disposition oil DIRs classified as deviations; however, no safety significance evoluotion is required for " unclassified deviations" (as defined in Appendix E of the CPRT Program Plan).
l
- O TN-85-6262 f22 Page 3 of 6
COMANCE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS 4.2 Format of Safety Significance Evaluations All safety significance evaluations shall use os their first sheet a DAP safety significance evaluation form (Attachment A) containing the following information:
The title of the DlR being eva!uoted and its DIR number o
The DAP discipline for which the evaluation applies.
o o
The DAP Action Plan Number to which the evaluation cpplies o
The method of evaluation A revision control block indicating originator, checker and o
approval signatures and dates f
The criteria (other than the general criteria contained in o
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this procedure) that were used to determine safety signif-icance o
A list of oppropriate references o
The main text of the evaluation shall include documento-tion of the activities described in this procedure 4.3 Preparation of Safety Significance Evaluations The reviewer assigned responsibility for o safety significance evaluation shall assure himself (or herself) that the deviation described in the DIR being evaluated is understood by the reviewer.
Using the definition of safety significance contained in this procedure, the assigned reviewer shall determine whether the DIR that is the subject of the evaluation constitutes deficiency.
The evaluation shall use the format described in 4.2 (above). After completion, the evaluation shall be given to o checker designated by the Discipline Coordinator. The checker shall review the evaluation and determine whether the evoluotion is correct and in conformance with this procedure. The originator and TN-85-6262/22 Page 4 of 6
COMANCFE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS checker shall resolve all comments. The originator and checker shall sign the evaluation form.
4.4 Approval of Safety Significance Evaluation After the safety significance evaluation has been reviewed, the Discipline Coordinator shall approve it if he is satisfied with it. The Discipline Coordinator shall prepare or cause to be prepared appropriate DIR forms in accordance with DAP-2. Depending upon the results of the safety significance evaluation, such DIRs may be required for:
o Conclusion that a deviation is a deficiency Conclusion that a deviation is not safety significant.
o If the item is determined not to be safety significant the DAP manager shall concur in the safety significance evaluation. If the item is determined to be safety significant the DAP Manager's concurrence and the RTL's approval are both required.
Af ter approval and concurrence as required above, the safety significance evaluation shall be assigned a control number in accordance with Section 5.1.
5.0 DOCUMENTATION l
5.1 Identification After approval has been obtained, the final engineering evaluation shall be assigned a control identification number by the DAP Manager or his designated representative as follows:
DAP-SS-YYY LDIR Number O
TN-85-6262/22 Page 5 of 6
COMANCl-E PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS This identification number, revision number and date shall be entered into the Safety Significance Evaluation Log by the DAP Manager or his designee.
S.2 Retention The original copy of all final safety significance evaluations shall be maintained and filed by the DAP Manager or his designated representative in accordance with DAP-14.
S.3 Revisions 4
Revisions to safety significance evaluations may be required to add additional information or clarify and correct misinformation (e.g., inputs).
Revisions shall be prepared, checked and approved in the some manner as the original evaluation.
Superseded final evaluations shall either be identified as such on each page or securely bound with at least the cover page so identified.
The Safety Significance Evoluotion Log shall also note this occurrence. Superseded evalua-tions shall be retained in the files for historical reference.
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1 TN-85-6262/22 Page 6 of 6 I
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ATTACHMENT A Evoluotion Numbtra DAP-SS-COMANCE PEAK ADEQUACY PROGRAM Rev:
SAFETY SIGNIFICANCE EVALUATION Number of Sheets:
' g-DAP Discipline:
V Issue / Discrepancy
Title:
Description of Issue /Discreponey:
Structure (s), System (s), or Component (s) Affected:
COMPLETE THE FOLLOWING. USE ATTACHMENTS AS NECESSARY.
Method of Evaluation:
Acceptance Criteria:
O
References:
Evaluation:
==
Conclusion:==
O Safety Significant O Not Safety Significant (Prepare DlR for Deficiency)
O Prepared By/Date
/
Checked By/Date
/
Discipline Coordinator /Date
/
DAP Manager /Date
/
Approved By RTL/Date
/
FORM DAP.22 REV.O
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SAFETY SIGNIFICANCE EVALUATION LOG E
w REVISION DATE SUPERSEDED CONTROL ID. NO.
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FORM DAP-22-2 l
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,(d TITLE PREPARATION OF SAFETY SIGNFICANCE EVALUATIONS NUMBER DAP-22 Revision Prepared Date Reviewed Date Approved Date
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TABLE OF CONTENTS j
Section Poae Cov e r S hee t......................................................
i 4
Tab le o f Con t en t s.................................................
11 1.0 P UR P OS E...................................................
I 2.0 SCOPE.....................................................
I 3.0 DEFINITIONS AND RESPONSIBILITIES.........................
I 4.0 I NS TR U CT I O N..............................................
3 5.0 DOCU ME NT AT I O N..........................................
5 ATTACHMENTS A
COMANCHE PEAK ADEQUACY PROGRAM SAFETY SIGNIFICANCE EVALUATION A-1 B
COMANCHE PEAK DESIGN ADEQUACY PROGRAM S AFETY SIGNIFICANCE EVALUATION LOG....................
B-l i
i i
l I
i I
l TN-85-6262/22 li i
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COMANCl-E PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS
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l.0 PURPOSE This procedure defines the scope and methodology applicable to the preparation and opproval of safety significance evoluotions required by DAP procedures or the CPRT Program Plan (including Appendix A).
2.0 SCOPE This procedure opplies to evoluotions performed to determine whether a devio-tion (as defined in DAP-2) is safety significant, it may also be applied in any other circumstance when the DAP is required to determine whether on item is safety significant.
3.0 DEFINITIONS AND RESPONSIBILITIES 3.1 Definitions 3.1.1 Safety Significance A Safety Significance Evoluotion is a specialized type of engineering evoluotion that is a principal means of documenting the conclusion of whether o deviation (as defined in DAP-2) is safety significant and should be classified as a deficiency.
l 3.1.2 Safety Significant l
"Sofety-significant," for the purposes of the CPRT Program, is defined to mean l
that the identified discreponey, if uncorrected, would result in the loss of capability of the offected system, structure or component to perform its Intended safety function. For purposes of the CPRT Program, credit is not allowed for redondoney at the component, system, train or structure level.
O TN-85-6262/22 Page I of 6 l
COMANCFE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 SIGNIFICANCE EVALUATIONS i
l This definition, which is employed in the CPRT Program for purposes of sompte expansion, is more restrictive than that usually applied to the term " safety.
significant" for regulatory purposes or in common parlance, in that it ignores redundancies that do exist in real life.
(Compare 10CFR50, Appendix A (introduction, " Single Failure"); 10CFR50.55(e)(l).) Identification of the devio-tion as " safety-significant" for purposes of the CPRT Program, therefore, is not necessarily equivalent to the statement that, in fact, the deficiency, if uncor-rected, would have resulted in unsafe operation.
3.2 Responsibilities 3.2.1 Reviewers Third party design odequacy personnel shall prepare and check the safety significance evoluotions.
Preparation and checking shall be performed by L
different individuals.
i I
f 3.2.2 Discipline Coordinators J
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Discipline Coordinators shall have the following responsibilities:
Prepare or cause to be prepared DIR forms when required o
by results of safety significance evoluotion Establish the scope of safety significance evoluotions to o
be performed within their respective disciplines Ensure thof qualified reviewers are assigned to prepare o
and check each safety significance evoluotion Review safety significance evoluotions prepared within o
their discipline (Note: discipline coordinator may oct as both checker and reviewer)
Sign oppropriate DIR forms per DAP-2.
o TN-85-6262/22 Page 2 of 6
I j
COMANCFE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0 p
SIGNIFICANCE EVALUATIONS i
V 3.2.3 Design Adequacy Program Monoger The DAP Monoger shall have the following responsibilities:
Concur in the results of safety significance evoluotions o
Assign control identification numbers to each completed o
safety significance evoluotion using the safety signif-l iconce evoluotion log o
Sign DIR forms in occordance with DAP-2.
I.2.4 Review Team Leader The Review Team Leader shall have the following responsibilities:
o Approve safety significance evoluotions that conclude on item is safety significant i
o Sign oppropriate DIR forms in accordance with DAP-2 offer completion of safety significance evoluotions.
4.0 INSTRUCTION 4.1 Scope of Safety Significance Evoluotion Discipline Coordinators shall determine the need for and scope of safety significance evoluotions.
As o minimum, safety significance evoluotions are required to disposition all DIRs classified as deviations; however, no safety significance evoluotion is required for " unclassified deviations" (as defined in Appendix E of the CPRT Program Plon).
TN-85-6262/22 Page 3 of 6
COMANCif PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0
(~'
SIGNIFICANCE EVALUATIONS tV 4.2 Format of Sofety Significance Evoluotions All safety significance evoluotions shall use os their first sheet a DAP safety significance evoluotion form (Attachment A) containing the following information:
The title of the DIR being evoluoted and its DIR number o
The DAP discipline for which the evoluotion applies.
o o
The DAP Action Plan Number to which the evoluotion opplies o
The method of evoluotion A revision control block indicating originator, checker and o
opproval signatures and dotes The criteria (other than the general criteria contained in o
this procedure) that were used to determine safety signif-iconce o
A list of appropriate references o
The main text of the evoluotion shall include documento-
~
tion of the activities described in this procedure 4.3 Preparation of Safety Significance Evoluotions The reviewer assigned responsibility for a safety significance evoluotion shall assure himself (or herself) that the deviation described in the DIR being evoluoted is understood by the reviewer.
Using the definition of safety significance contained in this procedure, the assigned reviewer shall determine whether the DIR that is the subject of the evoluotion constitutes deficiency.
The evoluotion shall use the format described in 4.2 (above). After completion, the evoluotion shall be given to o checker designated by the Discipline Coordinator. The checker shall review the evoluotion and determine whether the evoluotion is correct and in conformance with this procedure. The originator and TN-85-6262/22 Page 4 of 6
COMANCE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: 0
[]
SIGNIFICANCE EVALUATIONS
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checker sho!! resolve all comments. The originator and checker shall sign the evoluotion form.
4.4 Approval of Safety Significance Evoluotion After the safety significance evoluotion has been reviewed, the Discipline Coordinator shall approve it if he is satisfied with it. The Discipline Coordinator shall prepare or cause to be prepared oppropriate DIR forms in accordance with DAP-2. Depending upon the results of the safety significance evoluotion, such DIRs may be required for:
Conclusion that a deviation is a deficiency o
Conclusion that a deviation is not safety significant.
o If the item is determined not to be safety significant the DAP monoger shall concur in the safety significance evoluotion. If the item is determined to be safety significant the DAP Manager's concurrence and the RTL's approval are both required.
After opproval and concurrence os required above, the safety significance evoluotion shall be assigned a control number in accordance with Section 5.1.
5.0 DOCUMENTATION 5.1 Identification After opprovoi has been obtained, the final engineering evoluotion shall be assigned a control identification number by the DAP Monoger or his designated representative os follows:
DAP-SS-YYY
'DIR Number l
TN-85-6262/22 Page 5 of 6
COMANCE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-22
Title:
PREPARATION OF SAFETY Revision: O SIGNIFICANCE EVALUATIONS O
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This identification number, revision number and date shall be entered into tha Safety Significance Evoluotion Log by the DAP Monoger or his designee.
S.2 Retention The original copy of all final safety significance evoluotions shall be maintained and filed by the DAP Manager or his designated representative in occordance with DAP-14.
S.3 Revisions Revisions to safety significance evoluotions may be required to add additional information or clarify and correct misinformation (e.g., inputs).
Revisions shall be prepared, checked and opproved in the some manner as the original evoluotion.
Superseded final evoluotions shall either be identified as such on each page or securely bound with at least the cover page so identified.
The Safety Significance Evoluotion Log shall otso note this occurrence. Superseded evoluo-tions shall be retained in the files for historical reference.
TN-85-6262/22 Page 6 of 6 I
ATTACHMENT A Evoluotion NumbIra DAP-SS-COMANCE PEAK ADEQUACY PROGRAM Rsv SAFETY SIGNIFICANCE EVALUATION Number of Sheets:
DAP Discipline:
.e/Discreponey
Title:
escription of Issue /Discreponey:
Structure (s), System (s), or Component (s) Affected:
COMPLETE THE FOLLOWING. USE ATTACHMENTS AS NECESSARY.
Method of Evoluotion:
Acceptance Criteria:
(D Qferences:
Evoluotion:
l l
==
Conclusion:==
O Safety Significant O Not Safety Significant (Prepare DlR for Deficiency) ared By/Date
/
Checked By/Date
/
..scipline Coordinator /Date
/
DAP Monoger/Date
/
Approved By RTL/Date
/
FORM DAP.22 REV. 0
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A COMANCHE PEAK DESIGN ADEOUACY PROGRAM g
SAFETY SIGNFICANCE EVALUATION LOG eM REVISION DATE j
CONTROL D. NO.
BY TITLE 0
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FORM DAP-22-2
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