ML19220A220
| ML19220A220 | |
| Person / Time | |
|---|---|
| Issue date: | 10/31/1978 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| Shared Package | |
| ML19220A221 | List: |
| References | |
| REGGD-01.136, REGGD-1.136, NUDOCS 7811200319 | |
| Download: ML19220A220 (2) | |
Text
R9vison 1 p%.
U.S. NUCLEAR REGULATORY COMMISSION Octot ar 1978 e
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> G@ REG J K ORY GL D E o
OFFICE OF STANDARDS DEVELOPMENT REGULATORY GUIDE 1.136 M ATERIAL FOR CONCRETE CONTAINMENTS (Article CC-2000 of the " Code for Concrete Reactor Vessels and Containments" )
A. INTRODUCTION reusions Consideration will be en en to endorsme the Code in the Federal Reculati[ ins at ter sutlicien't General 1)esien Criterion 1,
1)uality Standards esperience has been accumulated with its use in the anu Records for Nuclear Power Plants, to 10 CFR mterim. the NRC statt w ill be setting torth its Part 50 l)omestic Licensing of Production and position on the atceptability of the Code f or huensing Ctilization Facilities. require s, in part, that struc-purposes in a series of regulatory guides.
tures, sy stems. and components important to saf ety be designed, tabricated. erected, and tested to qualits
.I his guide, the t'irt t of a planned series of tour, standard commensurate with the importance of the prosides inf ormation regarding the N.RC. statt.s posi-safety f unctions to be performed. Append.is B.
tion on the acceptabilits for NRL, licensine actions of
, Quality Assurance Criteria for N.uclear l,ow er Article t,(. s000 Material.
of the -"(, ode ior Plant s and Fuel Repros essing Plants to 10 CFR
(.on. rete Neaitor \\.cssels and t.ontalnmentt I3 art 30 requirew in part, that measures be establisheJ to assure materials control and control of special processes suth as welding, and that proper testine be Article CC-2000 of the Code specifies tertain performed.
requirements for materials associatcJ with the con-Ihis guide describes some bases acceptable to the struction of concrete containments f or nuclear pow er NRC statt for implementine the abose requirements plants. T hese material requirements cos er concrete with regard to material for concrete containments.
anu its constituents, reinf orcing bars. prestressine sutems. steel liners. and weldine material and their manuf acturerc quahty assurance programs. Res i-sions and deletions to <\\rticle CC-2000 were sub-B. DISCUSSION sequently pubbshed in the Summer and Winter 1977 AdJ, nda to the Code The American Society of Mechanical Engineers and the American Concrete institute base jomth
.F ie principal purpose of this 'cuide a to proside Iubhshed the Tode f.or Concrete Reactor Vessels mt,rmation recardine the v,R( statt s position on the anJ Con Aments. ' ' w hich is ref erred to in thi' m aptabilin for NRC licensing actions of Article guide as the Code. The ode was f ormally issued l'or CC 2000 of the "CoJe for Concrete Reactor Vessels the first time in 19D. was reissued in 1977, and has and C ontainments No attempt has been made to been undergoing a number of technical and editorial coordinate all literature (standards, todes, guidelines, reculations etc ) that mas be reles ant to the subject of this guide. In those areas w here th prosisions of
' Ihe ' ' Cod e for G m ere R eas tor Veuch nd G ntam ent, ' n ak, k now n erher as the Assti. Hocer and Preuore the ref erenced Code are insulticient f or licensing
\\ essel (' d Set tmn Ill. Da tuon 2 l'/7' eJ a m or n.s CI pu rposes, the statt has prosided supplementary stanJar l W74 Com it the Code eJ a !Jc W thereto nu) uidelim it condd s to be A c *ptable. 'l be he i+taircJ. rom the s mcru an % siets id sta h anu al i n nes aN ine n b Muba poM00n.
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I USNRC REGULATORY GUIDES
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]9112003/9
- 1. CC-2232.1(a) 2 containnwnts of nuclear powa plans suNur to the following:
Paracraph CC-2232.l(a) cises no guidinee as to
- 1. CC-2232.1 Intro **uction how conformance w. h the concrete strength require-it ments is to be demonstrated. This is cladfied in To item CC-2232. l(a), " conf ormance with the Regulatory Position C. I.
concrete strength requirementsshould be ada U:
- 2. CC-2232.2(a)
"as den onstrated by the strength tes CC-223 2. 2.
The Code lacks tolerance I;mits for the maximum permitted slump and air.ontent.
Ihe limits in
- 2. CC-2232.2 Strength Tests Regulatory Position C.2 are taken from Section 4.4.2 To paragraph CC-2232.2(a) should be added:
of ACI Standard 318 77. ' Building Code Require-The range of sariation allowed for the ments for Remforced Concrete.
air content shall be within 20.5 percent and
- 3. CC-2243.3(a) for the slmnp w pun C in. of k maximums pernatted by the specifica-It has not been established that the Code limit of tiont 00 ppn; chlorides is low enough to prevent sign ti-i cant Jeterioration of prestrc ssing elements.
- 3. CC-2243.3 Chemical Requirements N1orcoser, it has been reported 4 that the ability of Instead of item CC-2243.3ta h *he t ollow ing chloridt ions to cause corrosion increases with Jc-should be used:
creasing alkalinity of the calcium hydroxide solu-(a) Chlorides ( Cl) shall not esceed 100 tions. The staf f believes that the limits of chloride ppm when the pil salue of the grout is content in grout constituents as stated in Regulator) betw een 11 + and I.
- i all not exceed Position C.3 are better related to actual material 200 ppm when the pH salue is greater than properties than is the limit given in the Code. These
- 12. The pH value of the grout shall not be recommended limits are taken from Regulatory Guide less than i 1.6.
1.107. "Qualitications for Cement Grouting f or Pre-The method of calculating the quantity of chloride stressing Tendons m Containment Structures-tor nitrate) in grout is to sum the chloride f or mtrate)
- 4. CC-2463.1 content in the constituents of the grout before moung and ther to exprew the total as parts per million parts Different systems of prestressing may require dif-of water.
ferent numbers of tests for tendon sy stems to estab-g lish their adequacy f or use. Onc static tensile test, as
- 4. CC-2463.1 Static Tensile Test i
required by the Code, canno' the influence of Instead of CC-2463.1 Static Tensile lest. One w
dimtnsim.al variations of ane yes on the strength static tensile test the f ollowing should be of a prestressing q stem. Varwns within the toler-used; ance limits of the Com trus non Specification in "CC-24 h3.1 Static Tensile Testt Static material properties and in geometry of anchorages tensile tests -
and tendons must be realistie dly and adequatel)
Any system of prestressing should be subjected to represented in the sy stem testine Recalatory Position sufficient tests to establish its adequacy. Justification C.4 therefore recommends that any sy stem of pre-for the sutliciency of tests and a description of the stressing be subjected to suf ficient tests to establish test program should be sub nitted to the NRC for its adequacy before it is adopted for use-resiew and appros al.
C. REGULATORY POSITION D. lMPLEMENTATION The requirements and guidelines specified in Arti-The purpose of this section n to proside informa-cle CC-2000 Staterial. ~ of the Code for Concrete tion to applicants recarding the NRC staf t's plans for Reactor Vessels and Containments' ( ASNHi Boiler usine this regulatory' guide.
and Preuure Vessel Code. Section 111. Disision 2 1977, also known as ACI Standard 359 74) throuch liscept in those cases in w hich the applicant its Winter 1977 Addenda are acceptable to the NRC proposes an alternatise method for complying with staff for materul used in the constrmtion of concrete specified portions of the Commission's regulations, the method descobed herein will be used in the es aluation of submittals f or construction permit ap-
' Thn ref ers to the artale nun her ot.bt Code f or Cont rete plications docketed alter Nosember 3t). 197X.
Reattor Veweh and Containmenh
' Copics nuy be obtained f rom the Amernan Contrete Insn-If an applicant wishes to use this regulatory guide tute. Hos 1915n. Detroo. Nt u h 4 8 21" in deseloping submittals f or apphcations docketed on
'Hausnun. D A. "$tcel Corrosion in Cont rete. ' \\taterul' M
Nos ember 30. 1978 the pertinent portions of Protecnon Nosember 1%7 ( opes may be obtancJ f rom the Nanonal Anos uno, of r'orrosmn 1.ngineers. 2400 w'esil oop the application will be esaluated on the basis of this S. Houston, rem 9127 guide.
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