ML20040G513
| ML20040G513 | |
| Person / Time | |
|---|---|
| Issue date: | 01/29/1982 |
| From: | Chilk S NRC OFFICE OF THE SECRETARY (SECY) |
| To: | Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| References | |
| REF-10CFR9.7 M820106, NUDOCS 8202160202 | |
| Download: ML20040G513 (3) | |
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ISSA January 29, 1982 a
OFrtCE OF THE 9,
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MEMORANDUM FOR:
William J.
Dircks, Executive Director for Operations
~I'cy-Evaluation Forrest Remick, Director, 0
i FROM:
Samuel J.
Chilk, Secretar*
SUBJECT:
STAFF REQUIREMENTS - BRIEfIK ON STATUS AND PLAN FOR SEVERE ACCIDEN RULEMAKING (SECY-82-1), 10:05 A.M.,
WEDNESDAY, JANUARY 6, 1982, COMMISSIONERS' CONFERENCE ROOM, DC OFFICE (OPEN TO PUBLIC ATTENDANCE)
The Commission was briefed by staff on a new approach to the severe accident rulemaking as described in SECY-82-1.
The staff expects to receive standard plant designs from industry and proposed that the Commission use rulemaking to approve the specific plant designs.
The standard plants would be expected to meet or exceed requirements in the new CP/ML rule and the updated SRP.
The Commission agreed to consider substituting this approach for a generic severe accident rulemaking.
The staff was directed to revise the draft policy statement to address Commissioner comments including:
1.
Careful consideration should be given to ensuring that conflicting or incorrect signals are not sent to industry relative to significant matters that were to be contained in the long term rulemaking proceedings, e.g.,
filtered vented containment, core retention devices, hydrogen' control measures, thicker basemats, and other items listed in the Action Plan.
To the extent feasible, include a list of these items in the policy statement and say explicitly how they are to be treated in the review of new applications.
2.
More specific guidance pertaining to design criteria and minimum safety requirements considered necessary by the Commission should be specified, e.g.
stronger containments.
3.
Policy regarding backfitting of new requirements resulting from acceptance of standardized designs should be addressed.
8202160202 820129 PDR-10CFR PT9.7 PDR
2 4.
The requirements set forth in the new CP rule should be applied to any FDA's referenced in future applications.
5.
Since the safety goal is not yet in effective form, the continued reference to and reliance on it should be qualified in the proposed Policy Statement.
6.
It should be emphasized that PRA is only one of several tools used in the develop. ment of safety rulemakings.
7.
References to current siting policy or practice should be supplemented by noting that work is being done to further refine the policy.
8.
References to one-step licensing should be qualified since the Commission has taken no action toward adoption of such a policy.
9.
The following statements should be deleted from the Policy Statement:
Page 2:
"The Commission does not believe that, in the interim, this continuing research should be a deterrent to the placement of orders or the initiation of licensing reviews for new CP applications."
Page 4:
"... current generation light water reactors are estimated-to be close to or below the risk levels we believe acceptable, and that..."
l 10.
The new CP rule applies to only a narrow group of CP applications.
The Policy Statement should indicate that the CP rule is at least a minimum requirement for new plants, but should not suggest that it will be sufficient for new plants.
The staff should obtain ACRS input to the Policy Statement.
The revised Policy Statement should be forwarded to the Commission for approval.
(NRR/RES) (SECY SUSPENSE:
3/1/82)
The Commission also requested that, if the new policy is adopted, the staff show how:
1.
they will ensure that IDCOR effort continues; 2.
they will ensure that NRC research and other programs critical to this approach are continued.
(NRR/RES)
(SECY SUSPENSE:
3/1/82) 1
3 The staff indicated that:
-A paper containing plans for producing research information needed to confirm regulatory decisions-in the severe accident area,' including methodology for comparing the cost of proposed new requirements with their risk reduction, and generalized reduction-in the uncertainty of PRA, will be.provided to the Commission by February 25, 1982.
Technical justification concerning the need~for-severe accident features on operating plants will be available from. industry. (IDCOR) and NRC studies of degraded core accidents in mid to late 1983.
A revised staff estimate of the accident source term, which affects_ siting, emergency planning and
~
severe accident PRA will be completed in 18 months to two years.
A-Policy Statement on safety-goals should be issued in final form by July, 1982.
cc:
Chairman Palladino Commissioner Gilinsky Commissioner Bradford Commissioner Ahearne
. Commissioner Roberts Commission Staff Offices ACRS ASLBP ASLAP Public Document Room DCS-016 (Phillips)
.