ML20129A735

Request for OMB Review & Supporting Statement Re GL-91-02, Reporting Mishaps Involving LLW Forms Prepared for Disposal. Estimated Respondent Burden Is 272 H

ML20129A735
Person / Time
Issue date:	10/15/1996
From:	Cranford G NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
To:
References
GL-91-02, GL-91-2, OMB-3150-0156, OMB-3150-156, NUDOCS 9610220225
Download: ML20129A735 (10)

Text

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j, PAPERWORK REDUCTION ACT SUBMISSION I

j Please read the instructions before completing this form. For additional forms or assistance in completing this form, j

contact your agency's Paperwork Clearance Officer. Send two copies of this form, the collection instrument to be 1

reviewed, the Supporting Statement, and any additional documentation to: Office of Information and Regulatory Affairs.

l Office of Management and Budget, Docket Library, Room 10102,72517th St'est NW, Washington, DC 20503 l

1. Agency / Subagency originating request

2. OMB control number I

U.S. Nuclear Regulatory Commission X

a.

3150-0156

b. None i

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3. Type of information collection (check one)

4. Type of review requestec (check onel 3

a. New collection X

a. Regular submission

c. Delegated i

b. Revision of a current!/ approved collection

b. Emergency - Approval requested by (date):

3 X

1. Extension of a currently approved collection

5. Will this information collection have a a.Yes l

significant economic impact on a 4

d. Reinstatement, without change, of a previously approved substantial number of small entities?

X b.No s ollection for which approval has expired

e. Rs instatement, with change, of a previously approved X a. Three years from approval date i

collection for which approval has expired 6 Requested l

f. Existing collection in use without an OMB control number expiration date

b. Other (Specify):

7. Title Generic Letter 91-02, Reporting Mishaps involving Low-Level Waste Forms Prepared for Disposal 1

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8. Agency form number (s) (if applicable) l NA J

1 3

9. Keywords i

j Radioactive Material, Radioactive Waste Disposal, Nuclear Waste Management l

10. Abstract i

Generic Letter 91-02 requests voluntary submittal of information concerning mishaps to low-level l

radioactive waste (LLW) forms prepared for disposal Waste from generators and processors are asked to j

notify the NRC within 30 days of a mishap.

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11. Affected public (Mak prmirv wara *P* anti se artwrs rhar som worn *x*)

12. obligation to respond tMark pnmuy with *P* aM an others ther acM with X*)

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a. Individuals or households

d. Farms X

a. Voluntary

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P

b. Business or otner for-profit

e. Federal Government

b. Required to obtain or retain benefits I

X

c. Not for. profit institutions

f. state. Local. or Tribal Government

c. Mandatory

13. Annual reporting and recordkeeping hour burden

14. Annual reporting and recordkeeping cost burden (in thoussWs or cWlars/

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a. Number of respondents 34

a. Total annt.alized capital /startup costs O

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b. Total annual responses 34

b. Total annual costs lo&M) o

1. Percentage of these responses

c. Total annuahzed cost requested o

collected electronically 0

d. Current OMB Inventory o

c. Total annual hours requested 272 e oi"erence o

)

d. Current oMB inventory 272

f. Explanation of difference

s. oifference 0

1. Program change

f. Explanation of difference

2. Adjustment f

1. Program change j

2. Ad ustment i

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15. Purpose of information collection 16 Frequency of recordkeeping or reportin (Check all that apply)

(Mark prirnary with *P* and all others that apply with *X*)

a. Recordkeeping

b. Third-party disclosure

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a. Apphcation for benefits

e. Program planning or management X

c. Reporting p

b. Program evaluation

f. Research X

1. On occasion

2. Weekly

3. Monthly

c. General purpose statistics g Regulatory or comphance

4. Quarterly

5. semeannually

6. Annually d Audit

7. B.ennially 8 other (describe)

17. statistical methods g* Agency contact tverson who can best answer Questions regarding the Conrent of this $Ubmission) ooes this information collection employ statistical methods?

Name:

Robert O'Connell h Yes h No Phone.

(301) 415-7877 10/95 l

9610220225 961015 4

PDR ORG EUSOMB PDR a

19. Certification for Paperwork Reduction Act Submissions On behalf of this Federal agency, I certify that the collection of informanon eacompassed by this request complies with 5 CFR 1320.9.

NOTE:

The text of 5 CFR 1320.9, and the related provisions of 5 CFR 1320.8(b)(3), appear at the end of the instructions. The certification is to be made uith reference to those regidatory pronsions as setforth in the instructions.

The following is a summary of the topics, regarding the proposed collection of information, that the certification covers:

(a)

It is necessary for the proper performance of agency functions; (b)

It avoids unnecessary duplication; (c)

It reduces burden on small entities; (d)

It uses plain, coherent, and unambiguous terminology that is understandable to respondents; (e)

Its implementation will be consistent and compatible with current reporting and recordkeeping practices; (I)

It indicates the retention periods for recordkeeping requirements; (g)

It informs respondents of the information called for under 5 CFR 1320.8(b)(3):

(i) Why the information is being collected; (ii)

Use of information; (iii)

Burden estimate; (iv)

Nature of response (voluntary, required fot benefit, or mandatory);

(v)

Nature and extent of confidentiality; and (vi)

Need to display currently valid OMB control number; (h)

It was developed by an office that has planned and allocated resources for the efficient and effective management and use of the iaformation to be collected (see note in item 19 of the instructions).

(i)

It uses effective and efficient statistical survey methodology; and (j)

It makes appropriate use of information technology.

If you are unable to certify compliance with any of these provisions, identify the item below and explain the reason in Item 18 of the Supporting Statement.

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OMB 83-1 4

SUPPORTING STATEMENT FOR GENERIC LETTER 91-02

" REPORTING MISHAPS INVOLVING LLW FORMS PREPARED FOR DISPOSAL" (3150-0156)

EXTENSION REQUEST Description of the Information C9 ection 11 NRC is requesting the extensio:1 of a previously approved information collection.

The Nuclear Regulatory Commission (NRC) issued Generic Letter 91-02 to encourage voluntary submittal (by both waste form generators and processors) of information conceming mishaps to low-level radioactive waste (LLW) forms prepared for disposal. This Generic Letter also reminds licensees of their obligation to report defects and deviations in accordance with NRC requirements in 10 CFR Part 21.

A.

Justification 1.

Need for and Practical Utility of the Collection of Information Prior to the issuance of Generic Letter 91-02, NRC collection of information conceming reported mishaps to LLW fomis prepared for ultimate disposal in a licensed LLW disposal facility was conducted throug!) indirect and informal means. Examples of mishaps that were reported included: (1) chemical reactions which occurred in low-level waste shipping containers storing dewaterec synthetic o.ganic materials (such as resins), (2) a chemical reaction between a chemical detergent and a waste solidification agent resulting in a boiling of the mixture, and (3) multiple incidents where cement-solidified bead resin wastes have either not solidified property or disintegrated over a period of time following solidification. The purpose of Generic Letter 91-02 was to ensure that all such events are voluntarily reported to the NRC with adequate information to determine if followup action is necessary.

2.

A_gency Use of Information.

A waste form mishap experienced by one reactor licensee or waste processor may raise the possibility of a generic problem. In that case, an NRC Information Notice or Bulletin would be issued to advise all power reactor licensees, low-level waste processors, and the sited-disposal States of the potential hazard (s) and to encourage (or, in the case of a Bulletin, to request) licensees to take the appropriate precautions to ensure the protection of public health and safety.

3.

Reduction of Burden throuah Information Technology There are no legal obstacles to reducing the burden associated with this information collection by the use of information technology. NRC encourages the use of such technologies. The sporadic nature of the mishaps to be reported, however, does not lend itself to,the use of such information technologies. Consequently, the current percentage of electronic submissions is zero.

4.

Effert to identify Duplication and Use Similar Information The information Requirements Control Automated System (IRCAS) was searched to identify duplication. None was found. There is no known information available to the Govemment that is similar to the information identified in the Generic Letter. Information is only provided if a mishap occurs.

5.

Effort to Reduce Small Business Burden A majority of the reports from waste processors are from commercial nuclear power reactor licensees, which are not small entities. Some responses may be received from waste processors that are small businesses, However, since the consequences to public health and safety from waste form mishaps are the same whether reported by a large or a small entity, it is not possible to reduce the burden on small businesses by less frequent or less complete reporting.

6.

Conseauences to Federal Proaram or Policy Activities if the Collection is not Conducted or is Conducted Less Freauently This is a one-time voluntary submittal when a mishap occurs. It is not possible to permit reporting less frequeltly. If the information were not collected, NRC would not be able to identify and evaluate a waste form mishap that might raise the possibility of a generic concem, and would be unable to notify other power reactor licensees, waste processors, and sited-disposal States of the potential hazards so that they could take appropriate precautions to protect public health and safety.

7.

Circumstances Which Justify Variation from OMB Guidelines Mishaps to LLW forms prepared for disposal should be reported to the NRC within 30 days so that NRC can determine whether (1) waste form requirements of 10 CFR @ 61.56 are met prior to disposal, (2) other waste processors need to be notified of processing problems, and (3) changes to the processing methods are needed.

8.

Consultation Outside the NRC An invitation to comment on the information collection requirements in Generic Letter 91-02 was published in the Federal Reaister on July 1,1996 (61 FR 33951). There were no comments.

9.

Payment or Gift to Respondents Not applicable 10.

Confidentiality of the Information None, except for proprietary information.

11.

Sensitive Questions None.

12.

Estimated Burden and Burden Hour Cost i

The actual burden on the licensee or processor is difficult to estimate because only a few of these mishaps have been reported. An average mishap report would be about one to three pages in length. The average time to prepare such a report is estimated to be eight hours.

This request includes burden estimates for Agreement State licensees. The burden estimate is provided in the following table.

Number of Burden Hours Respondent Total Annual Respondent Responses /Yr Per Response Burden (Hrs)

Burden (Hrs)

NRC Agreement NRC Agreement j

States States Waste 7

14 8

56 112 168 Processors Disposal Site 3

10 8

24 80 104 Operators Total 10 24 80 192 272 Experience to date has shown the number of responses to be less than 10 per year. Therefore, as a conservative upper bound, the number of responses is estimated to be no more than 10 per year.

This is assumed to be distributed so that three fourths would come from waste processors and one fourth would come from disposal site operators. The estimate of the number of Agreement State waste processor responses is based on the assumption that the number of such waste processors is approximately double the number of NRC waste processors, hence the number of responses will also be double (2 x 7).

At a rate of $120 per hour, the cost to respondents would be $32,640 (272 hours0.00315 days <br />0.0756 hours <br />4.497354e-4 weeks <br />1.03496e-4 months <br /> x $120/ hour).

13.

Estimate of Other Additional Costs None. For licensees subject to this requirement, it is most likely that purchases of equipment and services were made (1) prior to October 1,1995, (2) to achieve regulatory compliance with requirements not associated with the information collection, (3) for reasons other than to provide information or keep records for the govemment, or (4) as part of customary and usual business or private practices.

14.

Estimated Annualized Cost to the Federal Govemment l

The collection and processing of the information requires approximately 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> of NRC staff time per report (8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for headquarters staff and 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for the regional offices). It is estimated that up to 10 reports will be received per year from non-Agreement-State respondents. It is estimated that up to 24 reports will be received per year from Agreement State respondents. At $120 per hour, the annual cost to the Federal govemment would be $65,280 (34 reports x 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> / report x

$120). This cost is fully recovered by fee assessments to NRC licensees pursuant to 10 CFR Part 171.

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15 Reasons for Chance in Burden or Cost There is no change in burden. The cost estimate has been reduced because of a reduction in NRC's cost recovery fee rate.

16.

Publication for Statistical Use None.

17 Reason for Not Displayina Expiration Date This information collection is contained in a Generic Letter which was distributed to potential respondents in 1991 and still remains in effect. Revising and redistributing Generic Letter 91-02 merely to ut e the expiration date unnecessarily expends scarce agency resources.

18.

Exceptions to the Certification Statement There are no exceptions.

B. Co!!ection of information Empfovina Statistical Methods Statistical methods are not used in this collection of information.

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[7590-01-P]

l U. S. NUCLEAR REGULATORY COMMISSION Agency Information Collection Activities: Submission for OMB Review; Comment Request l

AGENCY:

U. S. Nuclear Regulatory Commission (NRC) l ACTION:

Notice of the OMB review of information collection and solicitation of public comment.

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SUMMARY

The NRC has recently submitted to OMB for review the followi1g proposal for the collection of information under the provisions of the Paper.vork Reduction Act of 1995 (44 U.S.C. Chapter 35). The NRC hereby informs powntial respondents that an agency may not conduct or sponsor, and that a person is not required to respond to, a collection of information unless it displays a currently valid OMB control number.

1.

Type of submission, new, revision, or extension: Extension.

2.

The title of the information collection:

Generic Letter 91-02, " Reporting Mishaps involving LLW Forms Prepared for Disposal" 9,:0 03g

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The form number if applicable: Not applicable.

4.

How often the collection is required: Reports are made only when the licensee or waste processor experiences a mishap that is reportable under the guidelines described in the Generic Letter.

5.

Who will be required or asked to report: Nuclear power reactor licensees and Agreement State and non-Agreement State waste processors and disposal site operators.

6.

An estimate of the number of responses: 34 7.

The estimated number of annual respondents: 34 8.

An estimate of the total number of hours needed annually to complete the requirement or request: 272 hours0.00315 days <br />0.0756 hours <br />4.497354e-4 weeks <br />1.03496e-4 months <br /> (an average of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> per response).

9.

An indication of whether Section 3507(d), Pub. L.104-13 applies: Not applicable.

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Abstract: Generic Letter 91-02 encourages voluntary reporting (by both waste form generators and processors) of information concerning 1

mishaps to low-level radioactive waste (LLW) forms prepared for disposal. The information is used by NRC to determine whether followup action is necessary to assure protection of public health and safety.

i A copy of the submittal may be viewed free of charge at the NRC Public Document Room, 2120 L Street, NW (Lower Level), Washington, DC. Members of the public who are in the Washington, DC, area can access the submittal via modem on the Public Document Room Bulletin Board (NRC's Advance Copy Document Library) NRC subsystem at FedWorld,703-321-3339. Members of the public who are located outside of the Washington, DC, area can dial FedWorld, 1-800-303-9672,. or use the FedWorld intemet address: fedworld. gov (Telnet). The document will be available on the bulletin board for 30 days after the signature date of this notice. If assistance is needed in accessing the document, please contact the FedWorld help desk at 703-487-4608. Additional assistance in locating the document is available from the NRC Public Document Room, nationally at 1-800-397-4209, or within the Washington, DC, area at 202-634-3273.

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. Comments and questions should be directed to the OMB reviewer by (insert date 30 days after publication in the Federal Recister):

Edward Michlovich Office of Information and Regulatory Affairs '3150-0156)

NEOB-10202 Office of Management and Budget Washington, DC 20503 Comments can also be submitted by telephone at (202) 395-3084.

The NRC Clearance Officer is Brenda Jo. Shelton, (301) 416-7233.

Dated at Rockville, Maryland, this day of 1996.

For the Nuclear Regulatory Commission I

- (s Gerald F. Cranford, Designated Senior Official for Information Resources Management

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UNITED STATES j

NUCLEAR REGULATORY COMMISSION

.c, AASHINGTON. O C. 20555

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ALL OPERATORS OF LOW-LEVEL RADI0 ACTIVE WASTE (LLW) DISPOSAL SITES, WASTE PROCESSORS, AND ALL HOLDERS OF LICENSES FOR NUCLEAR FUELS, NUCLEAR MATEF.IALS AND NUCLEAR POWER REACTORS

SUBJECT:

REPORTING MISHAPS INVOLVING LLW FORMS PREPARED FOR DISPOSAL (GENERIC L:TTER 91-02)

Purpose:

For the reasons presented below, the Nuclear Regulatory Commission (NRC) has decided to rely on voluntary submittal of informational reports by both waste form generators and processors regarding mishaps to LLW forms prepared for disposal. This Generic Letter is intended to encourage this action on such mishaps. Licensees are also reminded of their obligation to report defects and deviations in accordance with NRC requirements in 10 CFR Part 21.

Discussion:

Background -

NRC has incomplete information on mishaps to LLW forms prepared for disposal.

Four incidents have been reported in which pressurization resulted from chemical reactions in LLW shipping (NRC Information Notices 83-14, "Dewatered containers storing dewatered synthetic organic materials, such as resins Spent Ion Exchange Resin Susceptibility to Exothermic Chemical Reaction," March 21,1983; 84-72, " Clarification of Conditions for Waste Shipments Subject to Hydrogen Gas Generation," September 10, 198a; 90-50, " Minimization of Methane Gas in Plant Systems and Radwaste Shippir.g Containers," August 8,1990).

Another incident was reported in which, during solidification of the waste, a violent reaction occurred between a chemical detergent and a vendor's waste solidification agent (NRC Information Notice 88-08, " Chemical Reactions with Radioactive Waste Solidification Agents," March 14,1988). This reaction resulted in boiling of the mixture so that it overflowed the liner, then hardened, and had tc be chipped away. Other problems have been encountered in the use of cement to solidify and stabilize bead resin wastes. Thus, there have been multiple incidents in which cement-solidified bead resin wastes have either not solidified properly or have disintegrated over a period of time after solidification. Although mishaps such as these generally have been made known to regulatory authorities, mainly tFrough indirect and informal means, there is presently no established method.o encourage the reporting of such events and the providing of adequate information on them.

9501-30&ih9 5pp

Current Practice -

All three currently-sited Agreement States levada, South Carolina, and Washington) have established requirements in the State licenses for the reporting of waste form and container deficiencies identified by the site operators in wastes shipped to the sites for disposal.

In addition, all three facilities have on-site State inspectors who ir,spect tne condition of shipments received by the disposal-facility operators.

This information is provided to NRC as part of the NRC/ Agreement State exchange of information program.

The staff further notes, however, that neither the Agreement States nor NRC have specific regulatory requirements that apply to all licensees for reporting of waste form or container deficiencies.

Therefore, the States do report what they find, but they may not find some of these problems, because they have no requirement to look for all such events at their disposal facilitles, and they do not presently have the means to be inf ormed routinely of mishaps t:. t occur at NRC-licensed facilities.

Existing reporting requirements contained in 10 CFR 20.403, 50.72, 50.73 and 61.80 do not require reporting of waste form mishap information. The I

reporting requirement in 10 CFR Part 21 is associated with safety-significant defects or noncompliances, and mey not be interpreted by some to cover mishap information.

Classes of Needed Information -

The staff has identified three classes of useful information that interest NRC and could be reported.

These three include:

1.

The failure of high-integrity containers used to ensure a stable waste form. Container failure can be evidenced by changed container dimensions, cracking, or damage resulting from mishandling (e.g., dropping or impacting against another object).

2.

The misuse of high-integrity containers, evidenced by a quantity of free liquid greater than 1 percent of container volume, or by an excessive void space within the container.

Such misuse is prohibited by 10 CFR 61.56.

3.

The production of a solidified Class B or C waste form that has any of the following characteristics:

Contains free liquid in quantities exceeding 0.5 percent of the volume of the waste.

Contains waste with radionuclides in concentrations exceeding those considered during waste form qualification testing accepted by the regulatory agency, which could lead to errors in assessment of waste class.

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Contains a significantly dif feren; waste loading than that used in qualification testing accepteo by the regulatory agency.

Contains chemical ingredients no' present in qualification testing accepted by -the regulatory agency, and those quantities are sufficient to unacceptably degrade the waste product.

Shows instability evidenced by crumbling, cracking, spalling, voids, sof tening, disintegration, nonhomogeneity, or dimensional changes.

Evidence i # processing phenomena that exceed the limiting prneessing conditions identified in applicable topical reports on process control plans, e.g., foaming, temperature extremes, premature or slow hardening, and production of volatile material.

Bases for Needed Information -

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The voluntary reporting of the th"ee classes of information outlined above would allow the staff access to information on field experiences with LLW forms and to determine when modifications to test criteria are necessary.

10 CFR Part 61 establishes certain " minimum"(61.56(6)) and " stability" (61.56(b))

requiraaents for LLW, whereas Part 20 (Section 20.311) requires waste generators and processors to certify that the waste satisfied the requirements of Part 61.

The Nuclear Material Safety and Safeguards (NMSS) staff reviews topical reports and other documents provided by vendors and licensees to ensure that the waste-form requirements of Part 61 will be met and to provide a vehicle with which the certification requirements of Part 20 can be satisfied (by reference).

In a parallel effort, the Office of Nuclear Reactor Regulation (NRR) staff reviews information on waste-processing equipment and procedures to ensure that 10 CFR Part 50, App. A, " General Design Criteria for Nuclear Power Plants " is satisfied. The NRC staff findings of acceptability and adequacy of process-control provisions affecting the characteristics of the waste-form produced may require modification, if subsequent experience in the field reveals that the bases for the approvals are being exceeded or are no longer relevant. Therefore, to make informed decisions on regulatory action, to inform licensees of events that may have generic implications, and to make j

inspectors aware of the reported information, the staff needs to have f

i quantitative information on the nature and frequency of occurrence of mishaps regarding waste form and packaging fc. disposal.

It is suggested that the voluntary submittal of information regarding waste-form mishaps be reported within 30 days of the incident to NRC's Director of the Division of Low-Level Waste Management and De:om issioning and to the designated State disposal-site regulatory authority.

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315::-0156 ont:q so re: 'ic -w c^

e es 3.rc 3;erage ourder :s approximate;j 5 persen-hours per

'cersee resaonse, ir: mding visual observation of the waste form misnap, drarting a description of the observation, and prepartrg a final nishas report 'or suomittal to NRC, Comments on the accuracy of tnis estimate and suggestie :s ;t ttouce the burden Nay be directed tc the Office of the Management anc Budget, Room 3206, New Executive Office Building, Washington, D.C. 20503, and the U.S. Nuclear Regulatory Commission, Information and Records Management Branch, Office of Information Resources llanagement, Washington, D.C. 20555.

If you have any questions avaut this letter, please direct them to the technical contoct listed below or to the appropriate regional off;ce.

Sincerely,

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/ ac o.o Richard L. Bangart, Directdr Division of Low-Level Waste fianagement ar.d Decommissioning, HMSS Technical

Contact:

Michael Tokar, NMSS (301) 492-0590

Enclosure:

List of Recently Issued Generic Letters 4

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'O 91-01 REM 0 VAL OF 'eE S;hEDLLE FOR J:/04/31 ALL HOLDERS OF OLs THE WITHDRAWAL OF REACTOR OR cps FOR NUCLEAR VESSEL MATERIAL SPECIMENS POWER PLANTS FROM TECHNICAL SPEC!FICATIONS 90-09 ALTERNATIVE REQUIREMENTS FOR 12/11/90 ALL LIGHT-WATER SNUBBER VISUAL INSPECTION REACTOR LICENSEES INTERVALS AND CORRECTIVE AND APPLICANTS ACTIONS 89-10 CONSIDERATION OF THE RESULTS 10/25/90 ALL LICENSEES OF SUPP. 3 0F NRC-SPONSORED TESTS OF OPERATING NUCLEAR MOTOR-0PERATED VALVES POWER PLANTS AND HOLDERS OF CONSTRUC-TION PERMITS FOR NUCLEAR POWER PLANTS 90-08 SIMULATION FACILITY 08/10/90 ALL HOLDERS OF EXEMPTIONS OPERATING LICENSES OR CONSTRUCTION PERMITS FOR NUCLEAR POWER REACTORS 90-07 OPERATOR LICENSING NATIONAL 08/10/90 ALL POWER REACTOR EXAMINATION SCHEDULE LICENSEES AND APPLICANTS FOR AN OPERATING LICENSE 89-10 AVAILABILITY OF PROGRAM 08/03/90 ALL LICENSEES OF SUPP. 2 DESCRIPTIONS OPERATING NPPs AND HOLDERS OF cps FOR NPPs 88-20 COMPLETION OF CONTAINMENT 07/06/90 ALL LICENSEES HOLD-SUPP. 3 PERFORMANCE IMPROVEMENT ING OLs AND cps PROGRAM AND FORWARDING OF FOR NPP FACILITICS INSIGHTS FOR USE IN THE EXCEPT LICENSEES INDIVIDUAL PLANT EXAMINA-FOR BWRs WITH MARK I TION FOR SEVERE ACCIDENT CONTAINMENTS VULNERABILITIES 90-06 RESOLUTION OF GI 70, " POWER- 06/28/90 ALL PRESSURIZED OPERATED RELIEF VALVE AND WATER REACTOR BLOCK VALVE RELIABILITY,"

LICENSEES AND AND GI 94, " ADDITIONAL LOW-CONSTRUCTION TEMPERATURE OVERPRESSURE PERMIT HOLDERS PROTECTION FOR LIGHT-WATER REACTORS," PURSUANT TO 10CFR50.54(f)

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