ML20246A193
| ML20246A193 | |
| Person / Time | |
|---|---|
| Issue date: | 03/16/1989 |
| From: | Beckjord E NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Stello V NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20245L775 | List: |
| References | |
| FRN-53FR41607, FRN-54FR13361, RULE-PR-50 AC72-2-6, NUDOCS 8905080196 | |
| Download: ML20246A193 (2) | |
Text
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-,8 NUCLEAR REGULATORY COMMISSION -1 y V'! wAsHWOTON, C. C. 20666 fC Y
El MAR 161989 l
l MEMORANDUM FOR: Victor Stello, Jr., Executive Director for Operations i
FORM:
Eric S. Beckjord, Director, Office of Nuclear Regulatory j Research 1
SUBJECT:
FLOW CONTROL CONDITIONS FOR THE STANDBY LIQUID CONTROL SYSTEM l IN BOILING WATER REACTORS
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i Enclosed for your signature is a final rule to be published in the Federal l Register that amends 10 CFR Part 50, which clarifies conditions and considerations for determining the reactivity control capacity of boiling water reactor standby liquid control systems (SLCS). It does not constitute a significant question of policy nor does it amend 10 CFR Parts 0, 2, 7, 8, 9 Subpart C concerning matters of policy, or 110.
Backgrcund: You signed the proposed rule on this subject on October 12, 1988, anditwaspublishedintheFederalRegister(53FR41607)onOctober 24, 1988 i for a 60-day comment period. One cement was received from an electric j
utility company, whic) agreed with the clarification. The staff believes that the l
proposed rule adequately clarifies reactivity control capacity conditions for SLCS and should be adopted without modification.
Backfit Analysis: The backfit rule,10 CFR 50.109 does not a> ply to this rule, because this amendment does not involve any p,rovisions w.11ch would impose ,
backfitsasdefinedin10CFR50.109(a)(1). The rule is clarifying in nature. l Notices: The appropriate Congressional Comittees will be notified {
(Enclosure 2). A notice to the Comission that the EDO has signed this rule (
is enclosed for inclusion in the Daily Staff N:,+,es (Enclosure 3). !
Coordination: The Offices of Administration and Nuclear Reactor Regulation concur in the rule. The Office of the General Councal hae na lagal ejwt%m.
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A.2-v -s AN Eric S. Beckjord, D rector Office of Nuclear R ulatory Research l
Enclosures:
- 1. Federal Register notice )
of a Final Rule i
- 2. Congressional letters
- 3. Daily Staff Notes l
l g50 196 890501
! 50,54FR13361 PDR
\ _ _ _ _ _ _ _ _ _ - _ _
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Approved for Publication The Connission delegated to the EDO (10 CFR 1.31(a)(3)), the authority to developandpromulgaterulesasdefinedintheAPA(5U.S.C.551(4)) subject to the limitations in the NRC Manual Chapter 0103, Organization and Functions.
Office of Executive Director for Operations, paragraphs 0213, 038, 039, and 0310.
The enclosed rule, entitled " Flow Control Conditions for the standby Liquid Control System in Boiling Water Reactors," will amend 10 CFR Part 50.62 to set forth conditions and considerations for determining reactivity control capacity for boiling water reactor standby liquid control systems. This rule is necessary to clarify the intent of an existing regulation.
I 1
This final rule does not constitute a significant question of policy, nor l does it amend regulations contained in 10 CFR Parts 7, 8, or 9 Subpart C concerning matters of policy. I, therefore, find that this rule is within the scope of nty rulemaking authority and am proceeding to issue it.
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1 Executive Direct"or for Operations i
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I NUCLEAR REGULATORY C0lWISSION 10 CFR Part 50 Flow Control Conditions for the Standby Liquid Control System I in Boiling Water Reactors AGENCY: Nuclear Regulatory Commission.
ACTION: Final rule. 1
SUMMARY
The NRC is amending its regulations to set forth conditions and considerations for determining reactivity control capacity for boilin water reactor standby liquid control systems.
The changes are necessary to clarify-the existing regulation.
EFFECTIVE DATE:
(Insert a date 30 days following publication in the Federal.?egister.)
FOR FURTHER INFORMATION CONTACT:
William R. Pearson, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Washing 20555, telephone (301) 492-3764.
SUPPLEMENTARY INFORMATION: On Monday, October 24, 1988, the published in the Federal Register (53 FR 41607) a proposed rule, entitled
" Flow Cutrol Conditions for the Standby Liquid Control System in Water Reactors," that proposed amendments to 10 CFR 50.62.
Interested parties were invited to submit written comments within a 60-day comment period, which ended on December 23, 1988.
One comment was received, which agreed with the proposed clarification.
p (f[ hO p g. Enclosure 1
j J
No change to the proposed rule was suggested in the public comment 3
received by the NRC. l The Commission' believes that the proposed rule l
adequately clarifies reactivity control conditions for boiling water reactor standby liquid control systems (SLCS), thus, a final rule is being issued adopting the proposed rule without modification.
Environmental Impact: Categorical Exclusion The NRC has determined that this rule is the type of action described.
as a categorical exclusion in 10 CFR 51.22(c)(2). Thus, neither an environmental impact statement nor a , environmental assessment has been prepareJ.
I Paperwork Reduction Act Statement This rule does not contain a new or amended information collection requirement subject to the Paperwork Reduction Act of 1380 (44 U.S.C. '
3501 et seq.). Existing requirements were approved by the Office of Management and Budget under control number 3150-0011.
Regulatory Analysis Because this rule is of a clarifying nature and does not substan-tially change existing regulatory requirements, the regulatory analysis prepared for the final rule entitled " Reduction of Risk from Anticipated Transients Without Scram (ATWS) Events for Light-Water-cooled Nuclear Power Plants," published June 26,1984 (49 FR 26036) is still valid for 2
i Enclosure 1 l
1.-
- for this rule. The analysis is available for inspection in the Public Document Room, 2120 t Street NW., Washington, DC, Lower Level.Single copies of the analysis may be obtained from William R. Pearson, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC 20555, telephone (301)492-3764.
Regulatory Flexibility Act Certification i
In accordance with the Regulatory Flexibility Act of 1980 (5 U.S.C. I 605(b)), the Commission certifies that this rule will not have a signifi-cant economic impact on a substantial number of small entities and that !
therefore a regulatory flexibility analysis is not needed. This rule-making action affects only licensees that own and operate nuclear utili-zation facilities licensed under Sections 103 and 104 of the Atomic Energy Act of 1954, as amended.
These ifcensees do not' fall within the i definition of small businesses set forth in Section 3 of the Small {
Business Act (15 U.S.C. 632) or within the Small Business Size Sta!
set forth in the regulations issued for the Small Business Administration at 13 CFR Part 121.
Backfit Analysis The NRC has determined that the backfit rule,10 CFR 50.109, does not apply to this rule, and therefore, that a backfit analysis is not required, because these amendments do not involve any provisions which impose backfits as defined in 10 CFR 50.109(a)(1).
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Enclosure 1
ListofSubjectsin10CFRPart50 Antitrust, Classified information, Fire protection Incorporation by reference, Intergovernmental relations, Nuclear power plants and reac- i '
tors, Penalty, Radiation protection, Reactor siting criteria, Reporting and recordkeeping requirements.
For the reasons set out in the preamble and under the authority of the Atomic Energy Act of 1954, as amended, the Energy Reorganization Act of 1974, as amended, and 5 U.S.C. 552 and 553, the NRC is adopting the following amendment to 10 CFR Part 50.
PART 50 - DOMESTIC LICENSING OF PRODUCTION AND UTI '
1.
The authority citation for Part 50 continues to read as follows:
AUTHORITY:
Secs. 102, 103, 104, 105, 161, 182, 183, 186, 189, 68 Stat.
936, 937, 938, 948, 953, 954, 955, 956, as amended, sec. 234, 83 Stat.
1244, as amened (42 U.S.C. 2132, 2133, 2134, 2135, 2201, 2232, 2233, 2236, 2239, 2282); secs. 201, as amended, 202, 206, 88 Stat. 1242, as amended.1244,1246 (42 U.S.C. 5841, 5842, 5846).
Section 50.7 also issued under Pub. L.95-601, sec. 10, 92 Stat. .
2951 (42 U.S.C. 5851). Section 50.10 also issued under secs. 101, 185, 68 Stat. 936, 955, as amended (42 U.S.C. 2131, 2235); sec. 102, Pub. L.91-190, 83 Stat. 853 (42 U.S.C. 4332).
Sections 50.13 and 50.54(dd) also issued under sec.108, 68 Stat. 939, as amended (42 U.S.C. 2138).
Sections 50.23, 50.35, 50.55, and 50.56 also issued under sec. 185, 68 Stat. 955 (42 U.S.C. 2235). Sections 50.33a, 50.55a and Appendix Q also 4
Enclosure 1
i issued under sec. 102, Pub. L.91-190, 83 Stat. 853 (42 U.S.C. 4332)
Sections 50.34 and 50.54 also issued under sec. 204, 88 Stat.1245 (42 U.S.C. 5844). Sections 50.58, 50.91 and 50.92 also issued under Pub. L.97-415, 96 Stat. 2073 (42 U.S.C. 2239).
Section 50.78 also issued under j sec. 122, 68 Stat. 939 (42 U.S.C. 2152).
Sections 50.80-50-81 also issued under sec. 184, 68 Stat. 954, as amended (42 U.S.C. 2234).Section 50.103 also issued under sec.108, 68 Stat. 939, as amend (42 U.S.C. 2138).
{
Appendix F 'also issued under sec.187, 68 Stat 955 (42 U.S.C. 2237).
For the purposes of sec. 223, 68 Stat. 958, as amended (42 U.S.C.
2273), $$50.46(a) and (b), and 50.44(c) are issued under sec. 161b, 68 Stat. 948, as amended (42 U.S.C. 2201(b)); $$50.7(a), 50.10 (a)-(c),
50.34(a) and (e), 50.44(a)-(c), 50.46(a) and (b), 50.47(b), 50.48(a),
(c), (d), and (e), 50.49(a), 50.54(a)(i), (i)(1), (1)-(n), (p), (q), (t),
(v), and (y), 50.55(f), 50.55a(a), (c)-(e),'(g), and (h), 50.59(c),
50.60(a), 50.62(c), 50.64(b), and 50.80(a) and (b) are issued under sec. 1611, 68 Stat. 949, as amended (42 U.S.C. 2201 (1)); and $$50.49(d), ( l and(j),50.54(w),(z),(bb),(cd,and(dd),50.55(e),50.59(b),50.61(b),
50.62(d), 50.70(a), 50.71(a)-(c) and (e), 50.72(a), 50.73(a) and (b), t
- 50. 74, 50.78, and 50.90 are issued under sec.161(o), 68 Stat. 950, as amended (42 U.S.C. 2201(o)).
2.
In i 50.62, paragraph (c)(4) is revised to read as follows:
l 6 50.62 Requirements for reduction of risk from anticipated transients without scram (ATVS) events for light-water cooled nuclear power !
plants.
A A A A A 5
Enclosure 1
(c) ***
(4) Each boiling water reactor must have a standby liquid control system (SLCS) with the capability of injecting into the reactor pressure vessel a borated water solution at such a flow rate, level of boron con-centration and boron-10 isotope enrichment, and accounting for reactor pressure vessel volume, that the resulting reactivity control is at least equivalent to that resulting from injection of 86 gallons per minute of l
13 weight percent sodium pentaborate decahydrate solution at the natural boron-10. isotope abundance into a 251-inch inside diameter reactor pres-f sure vessel for a given core design. The SLCS and its injection location must be designed to perform its function in a reliable manner. The SLCS initiation must be as.tomatic and must be designed to perform its function in a reliable manner ft r plants granted a construction permit after July 26,1984, and for plants granted a construction permit prior to July 26, 1984, that have already been designed and built to include this feature.
A
- A A 2 Dated at Rockville, Maryland, thig.,f/ day of 1989. 1
/ /
292Nj Victor 6f.eJro .
Executive D for Operations.
1 6 Enclosure 1