Regulatory Guide 1.94

Quality Assurance Requirements for Installation, Inspection, and Testing of Structural Concrete and Structural Steel During the Construction Phase of Nuclear Power Plants

ML13350A297
Person / Time
Issue date:	04/30/1975
From:	NRC/OSD
To:
References
RG-1.094
Download: ML13350A297 (2)

_____UU.S. NUCLEAR REGULATORY COMMISSIONApril 1975REGULATORY GUIDEOFFICE OF STANDARDS DEVELOPMENTREGULATORY GUIDE 1.94.QUALITY ASSURANCE REQUIREMENTS FOR INSTALLATION,INSPECTION, AND TESTING OF STRUCTURAL CONCRETE ANDSTRUCTURAL STEEL DURING THE CONSTRUCTION PHASE OF NUCLEAR POWER PLANTS

A. INTRODUCTION

Appendix B, "Quality Assurance Criteria for NuclearPower: Plants. and Fuel Reprocessing Plants." to 10 CFRPart 50, "Licensing of Production and UtilizationFacilities," establishes overall quality assurance require-mcnts for the design, construction, and operation ofsafety-related structures, systems, and components ofnuclear power plants. This guide describes a methodacceptable to the NRC staff for complying with theCommission's regulations with regard to quality assur-ance requirements for installation, inspection, and test-ing of structural concrete and structural steel during theconstruction phasc of nuclear puwer plants. ThLi guideapplies to all types of nuclear power plants.

B. DISCUSSION

Working Group N45.2.5 of tile American NationalStandards Committee N45, Reactor Plants and TheirMaintenance, has prepared a standard that includesquality assurance requirements for installation, inspec-tion, and testing of structural concrete and structuralsteel during the construction phase of nuclear powcrplants. This standard was approved by SubcommitteeN45-2, Nuclear Quality Assurance Standards, of theAmerican National Standards Committee N45, and thefull committee. It was subsequently approved anddesignated N45.2.5.19741 by the American NationalStandards Institute on July 8, 1974.[ANSI N45.2.S-1974. "Supplementary Quality Assurance Re-quirements for Installation, Inspection, and Testing of StructuralConcrete and Structural Steel During the Construction Phase ofNuclear Power Plants.- Copics may be obtained from theAmerican Society of Mechanical Engineers. 345 East 47thStreet, New York. New York 10017.

C. REGULATORY POSITION

The requirements and guidelines that ate includedin ANSI N45.2.5-1974 for installation, inspection, andtesting of structural concrete and structural steel duringthe construction phase of nuclear power plants aregenerally acceptable to the NRC sta,'f and providean adequate basis for complying with the pertinentquality assurance requirements of Appendix B to 10CFR Part 50. subject to the following:I. Subdivision 1.5 of ANSI N45.2.5-1974 states:"Othet documents that are required to be includedas a part of this standard are identified at the pointof reference and listed in Section 8 and the Appendix ofthis Standard." The specific applicability cr accepta-bility of documents listed in Section 8 has been coveredseparatcly in other regulatory guides. Other standardsand codes listed in ANSI N45.2.5-1974 provide usefulguidance for the installation, inspection, and testing ofstructural concrete and structural steel. Prior to use ofthese other referenced codes and standards, however,the suitability of the standard or code should be reviewedfor the particular application under consideration.2. Subdivision 2.1 of ANSI N45.2.5-1974 includesgeneral provisions for planning the installation, inspec-tion, and testing of structural concrete and structuralsteel. In this regard the provisions of Subdivision 2.1 ofANSI N45.2.5'-1974 should be used in conjunction withRegulatory Guide 1.55, "Concrete Placement in Cate-gory I Structures."3. Subdivision 4.5 of ANSI N45.2.5-1974 provides, inpart, that inspection of concrete placement shall beperformed to verify the adequacy of concrete consolida-tion equipment and technique of operation. AC! 309-72,USNRC REGULATORY GUIDS Comments should be sent to the Secretary of the Commi,sson. U.S. NuclearRegulatory Guides are issued to describe and make available to the public Regulatory Commrssron. Washington. 0 C 70.S. Attention Docketing andmethods acceptable to the NRC staff of implementing specific parts of the Seraice SectionCommissoon t reguletons, to delineate techniques used by the staff in ewalu The guides are issued in ha following teon broad divsoionssling spectic problems or postulated accidents, or to provide guidance to appltcants Regulatory Guides ate not substitutes tfo regulations, and compliance I Power Reactots 6 Productswith thenm is not required. Methods and solutions difterent from those set out in 2 Research and Test Reactors 7 Ttansporilstonthe guides will be acceptable it they provide a basis for the findings requisite to 3 Fuels and Materials Facilities a. Occupmrtonal Healththe issuance or continuance of a permit or license by the Commission 4 Environmental and Siting 9 Antitrust ReviewComments and suggestion% lot impiovementin in these guides are 5 Melreils and Plant Protection 10. Generalat all times. and guides will he revised. a) Appropriate. to accomnrodate con.erants and to reflect new information or erperience However. comments on Copies of published guides may be obtained by written request indiclting thethis guide. It received within about two months alfter its isluance. will be par divisions desired to the U.S, Nuclear Regulatory Commission. Washington, OC.ticularly useful in evaluating the need for an eatly revision 20%5, Attenlion. ODlector. Office of Standards OevelopmrntS

"Recommended Practice for Consolidation of Con-crete," should be used as a basis for determining tieadequacy of tht. equipment for concrete consolidationand of the technique of operation.4. Subdivision 4.10 of ANSI N45.2.S-1974 states:"Welded reinforcing bar splices shall be subject to therequirements of Section 5.5, except that provisions ofAWS D 12.1 shall apply." The provisions of ArticlesCC-4334 and CC-4330 of the "Proposed Standard Codefor Concrete Reactor Vessels and Containments" (Pro-posed ASME Boiler and Pressure Code Section III,Division 2, through Committee Addenda 6)2 for testingof welded reinforcing bar splices should be used asinterim guidance pending issuance of ASME Section III2Copies bc obtained 'roi;1 The American ConcreteInstitute, P.O. Box 4754. Detroit, Michigan 48219.Division 2 as an approved Code and appropriate endorse.ment by the NRC staff.

D. IMPLEMENTATION

The purpose of this section is to provide gbidance toapplicants and licensees regarding the NRC staffs' plansfor utilizing this regulatory guide.Except in those cases in which the applicant proposesan acceptable alternative method for complying with thespecified portions of the Commission's regulations, themethod described herein will be used in the evaluationof construction pzrnit submittals for applications dock-eted after May 1, 1975. If an applicant whose applica.tion for a construction permit is docketed on or beforeMay I, 1975 wishes to use this regulatory, guide indeveloping submittals for applications, the pertinentportions of the application will be evaluated on the basisof this guide.9iZZ0<mC000 0z -'i0-a00J1.94-2