Document: NUREG-0800
Document ID: 12f45e44-74bc-4a6b-933a-2fd6bc43c6dd
Document Type: srp
Title: deals with the fuel oil storage and transfer system for these diesel engines up to the engine
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070569.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.4
CFR Part: 
CFR Title: 

Content:
the isolation valves 46 separating essential and nonessential portions are classified Quality Group C and Seismic Category I. Components and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above seismic and quality group classifications have been included and that the P&IDs indicate any points of change at the systems and/or systems components interfaces. 5. The reviewer verifies that the design is such as to minimize the creation of turbulence of the sediment at the bottom of the fuel oil storage tank or the chance of deleterious DRAFT Rev. 3 - April 1996 9.5.4-8 material entering the system during recharging, or by operator error, or due to natural phenomena. The reviewer will ascertain that provisions or verify that the diesel fuel oil test program have been incorporated to assure that the quality of the stored fuel oil meets minimum requirements at all times is in accordance with Regulatory Guide 1.137 and includes the following elements for verifying fuel oil quality: a. Inspection at least once per 92 days (or once per 31 days [if the groundwater table is equal to or higher than the bottom of the fuel oil storage tanks]) to check for and remove accumulated water from the fuel oil storage tanks; b. Sampling and testing from the storage tanks at least once per 92 days and from new fuel oil prior to its addition to the storage tanks to verify that the sample meets the following minimum requirements: 1) A water and sediment content of less than or equal to 0.05 volume percent; 2) A kinematic viscosity at 40 C of greater than or equal to 1.9 mm /s (1.9 2 centistokes) , but less than or equal to 4.1 mm /s (4.1 centistokes) ; 47 2 48 3) A specific gravity as specified by the manufacturer at 16/16 C (60/60 F) , or an API gravity at 16 C (60 F) , within limits established 49 50 in accordance with Positions 2.a and 2.b of Regulatory Guide 1.137; 4) A tested impurity level of less than 2 mg of