NUREG/CR-4540, Forwards BNL 861117 Request to Amend Page 60 of NUREG/CR-4540, Review of Seabrook Psa:Containment Modes & Radiological Source Terms, to Clarify Wording Re Conditional Failure Probability: Difference between revisions

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                          'j NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555
'j WASHINGTON, D. C. 20555 U
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DEC 311!B6 MEMORANDUM FOR:           Vincent Noonan, Director PWR Project Directorste f5, DPLA FROM:                     Victor Benaroya, Chief Facilities Operations Branch, DPLA
DEC 311!B6 MEMORANDUM FOR:
Vincent Noonan, Director PWR Project Directorste f5, DPLA FROM:
Victor Benaroya, Chief Facilities Operations Branch, DPLA


==SUBJECT:==
==SUBJECT:==
AMENDMENT FOR'BNL REPORT                 "A REVIEW OF THE SEABROOK PSA: CONTAINMFNT MODES AND RADIOLOGICAL SOURCE TERPS" PRA; NUREG/CR-4540 Enclosed is a copy of a recent comunication from Brockhaven National Laboratory concerning this review of the Seabrook PRA. They have indicated they wish to amend several pages in their final report due to wording in the                               )
AMENDMENT FOR'BNL REPORT "A REVIEW OF THE SEABROOK PSA: CONTAINMFNT MODES AND RADIOLOGICAL SOURCE TERPS" PRA; NUREG/CR-4540 Enclosed is a copy of a recent comunication from Brockhaven National Laboratory concerning this review of the Seabrook PRA. They have indicated they wish to amend several pages in their final report due to wording in the
original which they concluded did not ccnvey their intended meaning. The significant change pertains to page 60, where they originally wrote:                                       )
)
                              ."There failure isto negligible isolate". probability of prompt containment failure or This has been amended to read:
original which they concluded did not ccnvey their intended meaning. The significant change pertains to page 60, where they originally wrote:
                                "There is negligible probability of prompt containment failure".
)
The reason for this change is a finding provided earlier in their report where theyindicatedabeliefthatfailuretoisglatewouldbe,greaterthanthe conditional failure probability of 4 x 10- to 2 x 10 ' associated with a sub-atmospheric containment, a             further indicated the conditional failure probability may approach 410-This amendment is readily incorporated into the BNL NUREG/CR submitted to us
."There is negligible probability of prompt containment failure or failure to isolate".
                    . for publication since we are still processing the publication authorization.
This has been amended to read:
"There is negligible probability of prompt containment failure".
The reason for this change is a finding provided earlier in their report where theyindicatedabeliefthatfailuretoisglatewouldbe,greaterthanthe conditional failure probability of 4 x 10- to 2 x 10 ' associated with a sub-atmospheric containment, a further indicated the conditional failure probability may approach 410-This amendment is readily incorporated into the BNL NUREG/CR submitted to us
. for publication since we are still processing the publication authorization.
We request, by way of this memorandum, that W. Yanez substitute the amended pages. A copy of the enclosure should also go to the PDR and the PSNH.
We request, by way of this memorandum, that W. Yanez substitute the amended pages. A copy of the enclosure should also go to the PDR and the PSNH.
r u' Victor Benaroya, Chief Facilities Operations Branch
u' r
Victor Benaroya, Chief Facilities Operations Branch


==Enclosure:==
==Enclosure:==
As stated cc: 'S. Long                 W. Yanez V. Nerses          -
As stated cc: 'S. Long W. Yanez C. E. Rossi V. Nerses G. Bagchi W. Lyon S. Newberry N
C. E. Rossi G. Bagchi               W. Lyon                                                               '
S'i&l R y &'4 Y
S. Newberry N
\\
S'i&l R y &'4 Y                                                                                       \
T
T                               _                          - --}}
- --}}

Latest revision as of 21:38, 6 December 2024

Forwards BNL 861117 Request to Amend Page 60 of NUREG/CR-4540, Review of Seabrook Psa:Containment Modes & Radiological Source Terms, to Clarify Wording Re Conditional Failure Probability
ML20207F462
Person / Time
Site: Seabrook NextEra Energy icon.png
Issue date: 12/31/1986
From: Benaroya V
Office of Nuclear Reactor Regulation
To: Noonan V
Office of Nuclear Reactor Regulation
Shared Package
ML19306D588 List:
References
RTR-NUREG-CR-4540 NUDOCS 8701060024
Download: ML20207F462 (1)
v • d • e


Text

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v pn neo

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  • g UNITED STATES i

g NUCLEAR REGULATORY COMMISSION

{'

'j WASHINGTON, D. C. 20555 U

%...../

DEC 311!B6 MEMORANDUM FOR:

Vincent Noonan, Director PWR Project Directorste f5, DPLA FROM:

Victor Benaroya, Chief Facilities Operations Branch, DPLA

SUBJECT:

AMENDMENT FOR'BNL REPORT "A REVIEW OF THE SEABROOK PSA: CONTAINMFNT MODES AND RADIOLOGICAL SOURCE TERPS" PRA; NUREG/CR-4540 Enclosed is a copy of a recent comunication from Brockhaven National Laboratory concerning this review of the Seabrook PRA. They have indicated they wish to amend several pages in their final report due to wording in the

)

original which they concluded did not ccnvey their intended meaning. The significant change pertains to page 60, where they originally wrote:

)

."There is negligible probability of prompt containment failure or failure to isolate".

This has been amended to read:

"There is negligible probability of prompt containment failure".

The reason for this change is a finding provided earlier in their report where theyindicatedabeliefthatfailuretoisglatewouldbe,greaterthanthe conditional failure probability of 4 x 10- to 2 x 10 ' associated with a sub-atmospheric containment, a further indicated the conditional failure probability may approach 410-This amendment is readily incorporated into the BNL NUREG/CR submitted to us

. for publication since we are still processing the publication authorization.

We request, by way of this memorandum, that W. Yanez substitute the amended pages. A copy of the enclosure should also go to the PDR and the PSNH.

u' r

Victor Benaroya, Chief Facilities Operations Branch

Enclosure:

As stated cc: 'S. Long W. Yanez C. E. Rossi V. Nerses G. Bagchi W. Lyon S. Newberry N

S'i&l R y &'4 Y

\\

T

- --

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