Document: NRC Regulatory Guide
Document ID: ff075502-711b-4416-bfc8-a2a645bfe130
Document Type: regulatory_guide
Title: Nonmetallic Thermal Insulation for Austenitic Stainless Steel + HISTORY - HISTORY DG-1312 , Proposed Revision 1, published 09/2014 (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1407/ML14079A671.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.36
CFR Part: 
CFR Title: 

Content:
flourides to the lowest practicable levels by meeting the following conditions: 1. All insulating materials should be manufactured, processed, packaged, shipped, stored, and installed in a manner that will limit, to the maximum extent practical, chloride and fluoride contamination from external sources. 3. Qualification Testing. The test methods of ASTM C692 and ASTM C871 should be used as directed by ASTM C795. a) Preproduction corrosion testing. Each type of thermal insulating material used should be chemically analyzed as required by ASTM C795 to determine leachable chloride, fluoride, sodium and silicate, sufficient to meet the acceptance criteria of ASTM C795, figure 1 and to establish baseline values for confirming production quality control. Each material should be tested for stress corrosion effects as specified in ASTM C692 to determine acceptability using the criteria of ASTM C795. b) Production testing Each lot of insulation material should be chemically analyzed as required by ASTM C795 to determine leachable chloride, fluoride, sodium and silicate. The material should meet the acceptance criteria of ASTM C795, figure 1. The results should be statistically compared to the qualification results for any statistically significant variation to assure acceptability of the product. 4. Requalification. When a change is made in the type, nature, or quality of the ingredients, the formulation, or the manufacturing process, the insulation material should be re-qualified by repeating the qualification testing. 3 Thermal insulating materials include block insulation, pipe insulation, board insulation, blanket insulation and the cements and adhesives employed in their application. DG-1312 Page 5 D. IMPLEMENTATION The purpose of this section is to provide information on how applicants and licensees4 may use this guide and information regarding the NRC’s plans for using this regulatory guide. In addition, it describes how the NRC staff complies with 10 CFR 50.109,