ML19275A001
| ML19275A001 | |
| Person / Time | |
|---|---|
| Issue date: | 05/01/1979 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-1629, NUDOCS 7908300458 | |
| Download: ML19275A001 (11) | |
Text
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DATE ISSUED:
5/1/79
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MINUTES OF THE
/CRS SUSCCMMI'ITEE MEETING CN g/,/7i jh-h REX 3UIATORY ACTIVITES WASHINGEN, D.C.
APRIL 4, 1979 jp -rf 4.,,
h e ACRS Regulatory Activities Subcommittee held a meeting on April 4, 1979, at 1717 H Street, N.W., Washington, D.C.
he purpose of this meeting was to review:
1.
proposed Regulatory Guides, 2.
revisions to existing Regulatory Guides, and 3.
other matters pertinent to activities that affect the current licensing process or reactor operations.
Notice of this meeting was p2blished on Tuesday, March 30,1979, in the Federal Register, Volume 44, Number 55; a copy is included as Attachment A.
Dr. Romas G. McCreless was the Designated Federal Employee for the meeting.
A list of meeting attendees is included as Attachment B.
INTRODUCERY STATEMENT BY THE CHAIRMAN Dr. Siess, the Subcomittee Chairman, convened the meeting at 8:45 a.m.,
reviewed briefly the schedule for the meeting, indicating that the Sub-comittee will hold discussions with the NRC Staff pertinent to the following:
1.
Regulatory Guide 1.140, Revision 1, " Design, Testing, and Maintenance Criteria for Normal Ventilation Exhaust System Air Filtration and Adsorption Units of Light-Water-cooled Nuclear Power Plants" (Post Comnent) 2.
Propsed Regulatory Guide, " Cable Penetration Fire Stop Qualification Test for Nuclear Power Plants" (Pre Comment) 3.
Proposed Regulatory Guide 1.58, Revision 1, " Qualification of Nuclear Power Plant Inspection, Examination, and Testing Personnel" (Pre Cocment) 2031 133 7008300458
Reg Act April 4, 1979 4.
Proposed Regulatory Guide 1.131, Revision 1, " Qualification Tests of Electric Cables and Field Splices for Light-Water-Cooled Nuclear Power Plants" (Pre Comment)
He noted that the Subcommittee had received neither written coments nor requests for time to make oral statements from members of the public.
REGULA'ICRY GUIDE 1.140, REVISICN 1, " DESIGN, TESTING, AND MAINTENANCE CRITERIA FCR NCP. VAL VENTIIATION EXHAUST SYSTEM AIR FILTRATION AND ADSCRP-TION UNITS OF LIGHT-WATER-COOLED NUCLEAR PCM:R PLANTS" Regulatory Guide 1.140, Revision 1 was revie ed by the Subcommittee at the March 6, 1979 meeting. Since there were several concerns expressed by the Subconmittee and its consultants on the technical contents of this Guide, the Subcommittee suggested that the NRC Staff try to resolve these concerns and revise the Guide as appropriate prior to taking further action.
'Ihe Subcommittee reconsidered this Guide at the subject meeting.
The NRC Staff indicated that the present version of this Guide reflects consideration of the concerns expressed by the Subeccmittee and its con-sultants. Dr. Siess solicited comments from the Subcommittee on the changes ma'de to this Guide subsequent to the March 6,1979 meeting.
Dr. Moeller commented that he believes that a Regulatory Guide, especially a revision to a Guide, should provide explicit guidance to the Applicants so as to preclude or minimize the problems experienced in the operating nuclear power plants. A Guide and its revision should be designed to correct the deficiencies noted in the existing systems. 'Ihe results of his study of Licensee Event Reports (LERs) on the air cleaning systems indicate that over 50% of the failures in the Boiling Water Reactors and over 30% of the failures in the Pressuri::ed Water Reactors were attributable 2031 134 w
l Reg Act April 4, 1979 to the failure of the instruments used to monitor the air cleaning system performance. He expressed concern about the fact that this Guide does not cover several essential instruments necessary to monitor moisture content, radioactivity level, hydrogen concentration, and temperature of the char-coal bed; he suggested that it would be helpful to include appropriate references in this Guide so as to provide adequate guidance on such instrumentations.
he NRC Staff indicated that the scope of this Guide is limited only to those instruments that are used to measure pressure drops and flow rates through the normal ventilation system filters. Other instruments identified by the Subcommittee may be required for Engineered Safety Features (ESF) ventila-tion systems. As far as radiation monitoring is concerned, they could referene..
Regalatory Guide 1.21; however, they believe that it may not provide adequate guidance in its present form and needs to be updated. S e Instrumentation Branch of the NRC Staff believes that quality instruments could ce purchased by using appropriate Industry Standards and Codes. H e NRC Staff believes also that the revised version of ANSI N509 may provide adequate guidance for instrumentation; however, the revised ANSI document may not be available for use for another few months.
In view of the fact that this Guide may be updated immediately after the issuance of the revised ANSI Standards, Dr. Siess asked, is there any advantage in issuing this Guide now.
Mr. Cardile responded that without this Guide the NRC Staff may find it very difficult to judge the design adequacy of the normal atmosphere cleanup systems.
Dr. Siess ccc:nented that the scope of this Guide needs further improvement.
He suggested that the scope should be defined explicitly in the Introduction Section; it should specify clearly the limitations of this Guide, and define explicitly the tp of instruments covered and those that are not covered by this Guide.
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Reg Act April 4, 1979 h e NRC Staff indicated that they will make appropriate changes to
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improve the scope of this Guide.
With regard to a comment made by Mr. Parker, ACRS consultant, at the March 6,1979 meeting, which states that gas thermal generators are available for testing systems in as much as 50,000 cfm installed capacity, Dr. Kerr asked, what is the significance of selectirg 30,000 cfm (see Regulatory Position C.2.b).
W e NRC Staff responded that based on the information provided in ERDA 76-21, " Nuclear Air Cleaning Handbook", and based on further discussion among themselves, they believe that 30,000 cfm flow rate specified in this Guide is a reliable number; they do not have much confidence in using flow rates higher than 30,000 cfm. However, the applicants can take exception to this Guide if they could demonstrate the reliability of the systems that use higher flow rates.
Mr. Bender commented that the information provided in ERDA 76-21 may be based on several engineering judgments; he is doubtful whether there is any actual engineering experience to verify the adequacy of this number.
He suggested that caution should be exercised in selectire a specific flow rate using just the information provided in ERDA 76-21 document.
In response to a follow-up question from Mr. Bender concerning the conse-quences associated with the accidental release of a large amount of I-129, Mr. Cardile noted that the calculations performed by the NRC Staff indi-cated that the radioactive level of I-129 expected to accumulate in the charcoal bed is very insignificant. Based on that they believe that I-129 release may not be a major concern.
W e Subcommittee suggested several editorial changes, provided guidance for clarification and improvement in some areas, and indicated that it would recer. mend this Guide to the full Ccamittee for concurrence witn the Regulatory Positions of this Guide during the 228th ACRS meeting subject to the incorporation of the changes proposed cy the Subcommittee.
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Reg Act April 4, 19 %
Dr. Siess suggested that it will be advisable to make the neces:Mf changes prior to issuing this Guide for public comnent.
W e Subcommittee suggested several editorial changes, provided guidance for clarification in some areas and indicated that the NRC Staff could issue this Guide for public comment.
PROPCSED REGUIA E RY GUIDE 1.58, REVISION 1, " QUALIFICATION OF NUCLEAR POWER PLANT INSPECTICN, EXAMINATION, AND TESTING PERSCNNEL" Proposed Regulatory Guide 1.58, Revision 1, endorses, with certain exceptions, ANSI N45.2.6-1978, " Qualifications of Inspection Examina-tion, and Testirq personnel for Nuclear Power P.isots".
h is Guide describes an acceptable method of complying witn the Comnission's regulations with regard to qualification of nuclear power plant in-spection, examination, and testing personnel. 'Ihe proposed revision to this Guide reflects the changes made to the ANSI N45.2.6 and the increased experience in the qualification of nuclear power plant inspection, examination, and testing personnel.
We Subcommittee suggested some minor editorial changes ard indicated that the NRC Staff could issue this Guide for public ccrament.
PROPOSED REGUIATCRY GUIDE ' 131, REVISION 1, "CUALIFICATION TESTS OF ELECTRIC CMLES AND FIELD SPLICES FCR LIGHT-WATER-COOLED NUCLEAR iGVER pgg.
Proposed Regulatory Guide 1.131, Revision 1 endorses, with certain exceptions, IEEE Standard 383-1974, "IEEE Standard for Type Test of Class IE Electric Cables, Field Splices and Connections for Nuclear Power Generating Stations". 21s Guide describes a method acceptable to the NRC Staff for complying with the Coctnission's regulations with regard to qualification testiry of electric cables and field splices used in light-water-cooled nuclear power plants.
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k Reg Act April 4, 1979 Dr. Siess suggested that it will be advisable to make the necessary charges prior to issuing this Guide for public comment.
S e Subcoreittee suggested several editorial changes, provided guidance for clarification in some areas and indicated that the NRC Staff could issue this Guide for public comment.
PROPOSED REGUIRIORY GUIDE 1.58, REVISION 1, "QUALIFICATICN OF NUCLEAR POWER PLANT INSPECTICN, EXAMINATICN, AND TESTING PERSCNNEL" Proposed Regulatory Guide 1.58, Revision 1, endorses, with certain exceptions, ANSI N45.2.6-1978, " Qualifications of Inspection, Examina-tion, and Testire personnel for Nuclear Power Plants". 'Ihis Guide describes an acceptable method of complying with the Commission's regulations with regard to qualification of nuclear power plant in-spection, examination, and test.ing personnel. Tne proposed revision to this Guide reflects the changes made to the ANSI N45.2.6 and the increased experience in the qualification of nuclear power plant inspection, examination, and testing personnel.
We Subecmittee suggested some minor editorial changes and indicated that the NRC Staff could issue this Guide for public ccxnment.
PROPOSED REGULATCRY GUIDE 1.131, REVISICN 1, "CUALIFICATICN TESTS OF ELECTRIC CABLES AND FIELD SPLICES FOR LIGHT-WATER-COOLED NUCLEAR PGER PIANTS" Proposed Regulatory Guide 1.131, Revision 1 endorses, with certain exceptions, IEEE Standard 383-1974, "IEEE Standard for Type Test of Class IE Electric Cables, Field Splices and Connections for Nuclear Power Generating Stations". This Guide describes a method acceptable to the NRC Staff for complying with the Comission's regulations with regard to qualification testing of electric cables and field splices used in light-water-cooled nuclear power plants.
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Reg Act April 4, 1979 This Guide was issued for public comment in August 1977 and comments were received. Subsequent to the p2blic comment period, significant changes have been made to this Guide based on the results of a study performed by Underwriters' Laboratories on the sensitivity of variations in fire qualification tests.
Since the changes are substantive, the NRC Staff has decided to reissue this Guide for public comment.
Dr. Kerr commented that the statement, "...the remainire required air (oxygen) comes from the atmosphere," used by the NRC Staff to respond to one of the public comments, (the 5 to 1 air to gas ratio would not produce anywhere near the desired amount of heat. The air to propane ratio of about 25 to 1 or an oxygen to propane ratio of 5 to 1 would be required), is not clear and requires some clarification.
In relation to the same issue stated above and with reference to the requirement of Regulatory Position C.12 that an air-gas ratio of 5.8 3
to 1 shall be used, Mr. Etherington ecmmented that if 5.8 ft of air 3
is burned with 1 ft of propane gas, it may not produce a blue flame which is an indication of complete combustion; instead, it will produce a snokey flame which is due to a partial combustion. He asked on what basis has the Staff selected an air-gas ratio of 5.8 to 1.
Mr. Feit, NRC Staff, responded that the air-gas ratio number was based on the results of some experimental programs where the flame stability was studied for various air-gas mixture ratios. He stated that the main purpose is to produce a reasonably stable flame.
Mr. Bender commented that if the Staff's intent is to describe a fire that is more representative of what the installation might see in ser-vice, it is not defined explicitly in this Guide.
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74q Act April 4, 1979 J
NhJ Etherington commented that by using the approach describd it. this C$1de orn would get a long smokey-flame; if the Staff's objective is to reproduce such a conditicn, he wouldn't have any objection. Evever, if the~ Staff's intent is to produce a certain heat (Stu) rate by burning a 5.tal air-gas mixture in the burner, he would disagree with the approach
.desetibed in this Guide.
1 Mr. Fe:it noted that the Staf!'s intent is not to g t a blue fIame, because he believes that it uay not be an adequate representation of the type of flame that. a cable will produce when exposed to fire. Wey also do not intend t5 prcduce a certain heat rate. tair main objective is to ge: a stable rep:cducible flame which will give a rea.sonable r<epre-sentation of the fle.e prodtx:ed by a cabh when exposed to fire.
Wf th regard to R'.gulatory Positions C.9 end C.10, Mr. Bender suggested that it would bc helpful to explain the reasons for se'.e: ting particular
" test" ard " tray" configurations.
In res;cnse to another comment from Mr. Bender, that ai rame of references f
should t,s provided for the test tray configuration included in Regulatory Position C.11 so as tc specify clearly what type of installation it repre-sents, Mr. Hintre noted that the test tray configuration is tot represen-tative of any specific instal'1ation; it will be used to perform a screening test on cables"in order to select fire retardant materials for cables.
1 The Subcommittee, suggested several editorial changes, provided suggestions for clarification in some arean and ladicated tbat the NRC Staff could issue this Guide for public comment.
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w Reg Act April 4, 19'/9 SCHEDllLE FOR THE MAY 9,1979 REGUIATORY ACTIVITIES SUBCCMMITTEE MEETIjG 7he" NRC Staff indicated that the following Regulatory Guides may be sutmitted to the Subcommittee for its review ac the May 9,1979 meet-irg:
1.
Regulatcry Guide 1.94, " Quality Assurance Requirements for Installation, Inspection, arx! Testing of Structural Concrete and Structural Steel During the Construction Ehase of Nuclear Power Plants."
2.
Proposed Regulctory Guide, " Guidance on Applications for Amendments to Operating I.icenceu for IhR Core Reloads."
3.
Regulatory Guide 1.9, Revision 2, " Selection, Desigr., and Qualification of Diesel-Generator Units Used as Standby (Onsite) Electric Power Systems at Nuclear Power Plants."
'Ihe meetirg was adjourned at 11:22 a.m.
NOTE:
For additional details, a complete transcript of the meeting is available in the NRC Public Document Rocm,.1717 H Street, N.W.,
Washington, D.C. 20555, or from Ace-Federal Reporters, Inc.,
444 North Capital Street, N.W., Washington, D.C.
2031 l41 O
NOTICIS Y
(4) Regulatory Guide 1.140. Rettston Anytsoet Commerfts o88 SEACTOS sAfg.
- 1. " Design. Testing, and Maintenance GUARDS, SutccauuTTU ON ttGULATORY Criteria for Norms) Ventilation Ex.
ACTwifE5 haust System Air Filtration and Ad.
sorption Units of Lignt-Water Cooled Nuclear Power Planta ** (Post ment)
Com.
The ACRS Subcommittee on Regu.
latory Activitaes will hold Other matters which may be of a an open meeting, on April 4.1979 in Room predecisional nature relevant to reac-1046. 1717 H St., N.W Washington.
tor operation or licensing activities DC 2C555. Notice of this meeting was may be discussed follosing this ses-sion.
published in the FIrent Rtatstra on February 28.1979 444 FR 11280).
Persons wishing to submit written In accordance with the procedures statements regarding Regulatory out!!ned in the Frpraat. Rrcisita on Guide 1.140. Revision 1. may do so by October 4.1978 (43 FR 45926) oral or providing a readily reproducible copy written statements may be presented to the Subcommittee at the begtnntnc by members of the public. recordings of the meeting. However, to insure sill be permltted only during those that adequate time is available for full portions of the meeting wh* n a tran-consideration of these comments at script is being k pt, and quest.ons may the meeting. It is dmirable to send a be asked only by ~2 embers of the Sub, read!)y reproducible ecpy of the com-committee, its cormultants, and Staff.
Penons desiring to make oral state-ments as far in advance of the meeting as practicable to Mr. Gary R.
ments should notify the Designated Quittschreiber (ACRS). the Designat.
Federal Emplo:ee as far in advance as ed Federal Employee for the meeting.
practicable so that appropriate ar-in care of ACRS. Nuclear Regulatorv rangements can be made to allow the Commission. Washington D.C. 0055'5 necessary time during the meeting for or telecopy them to the Designated such statements.
Federal Employee (202-434-33191 The agenda for subject meetme far in advance of the meeting as prac-as shall be as follows Wednesday. April 4-ticable. Such comments shall be based 2379. the meeting sciIl commence at upon documents ort file and available 8:45 a.m.
for public inspection at the NRC The Subcommit*.ee will hear presen-Public Cocument Room.1717 H St.
Lations from the NRC Staff and will NW., Washington. DC 20555.
i hold discussions with tlus group pertt-Further information regarding pent to the following'.
topics to be discussed, whether the (1) Proposed Regulatory Guide.
meeting has been cancelled or resched-
" Cable Penetration Fire Stop Qualift-uled, the Chairman s ruling on re-cation Test for Nuclear Power Plants '
quests for the opportunity to present 4
(Pre Comment) oral statements and the time allotted (2) Proposed Regulatory Guide 1.58.
therefor can be obtained by a prepate Revision 1. " Qualification of Nuclear telephone call to the Designated Fed.
Power Plant inspection. Exammation, eral Employee for this meeting. Mr.
Gary R.
and Testing Personnel" (Pre Com-Quit &schreiber. (telephone menti 202/634-32671 (3) Proposed Regulatory Giside S 00 p.m EST*between 8:15 a.m. and t.131. Revision 1. -Quanfication Test 8 of Electric Cables, and Field Spilces.
Dated. March 14,1979.
for Light. Water cooled Nuclear Power Plants (Pre Comme,nt)
Josco C. Hor.r.
Adottory Committee Management Officer.
171t Doc. 76-4170 FUed 3-IS-79: 8.43 aml
,s.ou g tsm, m,,.o. n_= soar. manca a. im D "
]D 90W Y@ib ATTACHMENT A k11/
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ACRS SUBCOMMITTEE MILTI!G ON RfLUI.ATORY ACTIVITES WASHINGTON, D.C.
APRIL 4, 1979 ATTENDEES LIST ACRS NRC C. P. Siess, Chairman R. Feit, RES H. Etherington, Maber D. F. Sullivan, OSD M. Bender, Member D. P. Motley, SD W. Kerr, Member C. B. Balthrop, SD D. Meeller, Member W. R. Pearson, SD T. McCreless, Staff