Document: NRC Regulatory Guide
Document ID: 4056a39f-0c52-46d1-b8d4-097c0827389f
Document Type: regulatory_guide
Title: Spray Pond Piping Made from Fiberglass-Reinforced Thermosetting Resin (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740253.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.72
CFR Part: 
CFR Title: 

Content:
de and has concurred in the regulatory position. *Lines indicate substantive changes tram previous issue. USNRC REGULATORY GUIDES Regulatory Guides eam issued So descilbe end make svalable ID ft publi methods acCeptable w to NRC staff al ill*em ntig apeodf pIne o .on Com 'laln rguatl Io denwte lecdn-,= wed by 1w staff in evsu ~ pcfcproblems or postiletad aceldents. Or ID prVOvd gJUWdnc 10 nt.Ragulatory Gulde. wre hiot subeftfts te 10"0 sauelosnd corn pence with irn Is not equkL Meihods and eolutlona dffrent rom *so s out in weidss v be = "*e thP prfdo r a "• *Xe&W Me e c.n aetr ka by to Corm desio Comnenwts n uggestou wo fo tr aov~ament meh 1wae idesare ncourasgdat of I m. n wgukd. .Ube ,ebed. as Pfrpiat. 10 sci10date camnme and 10 ~sic now infomato or expe-rienoe. This guide was orvised ae remit of subetantie coment isev OM 111 pubic end additional emil revlew. B. DISCUSSION The ASME Boiler and Pressure Vessel Com mittee publishes a document entitled "Code Cases." Generally, a Code Case explains the 'intent of rules in the ASME's Boiler and Pressure Vessel Code (the Code)' or provides for alternative requirements under special circumstances. Most Code Cases are evehtually Ssuperseded by Lrevisions to the Code and then are annulled by action of the ASME Council. Code Case N-155-1 (1792-1), referred to in this guide, is limited to Section III, Division 1, of the Code and is oriented toward design and fabrication of RTR piping. The Code Case does not prescribe a lower temperature limit, prima rily because the American Society for Testing and Materials (ASTM) specifications do not contain a lower temperature" limit, but RTR piping systems would normally be qualified for the intended service temperature condition. It is planned that after Revision 2 of, this guide is issued, the acceptability of future minor revisions to Code Case N-155 (1792) will be noted in Regulatory Guide 1.84, "Design and Fabrication Code Case Acceptability--ASME Section III Division I1." Major