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PO Box 1928 API 653 SIMILAR SERVICE POWERS BECA 94510 TELL 707 707 334 3400 KIRK PETROLEUM TRACY,CA FAx 707 926 2684 ENGINEERING&INSPECTION,INC www.powersel.com Tank 2 (Candidate Tank) SIMILAR SERVICE ASSESSMENT-DATASHEET-BOTTOM PRODUCT SIDE CONTROLTANKID: Tank LOCATION: TRACY,CA DIAMETER(FT): 24 HEIGHT(FT): 24 CAPACITY(BBLS): 1,934 CANDIDATE TANK ID: Tank LOCATION: TRACY,CA DIAMETER(FT): 24 HEIGHT(FT):— 24 CAPACITY(BBLS): 1,934 ONTROLTANK INSPECTION COMP.: Powers EI INSPECTION YEAR: 2010 JDIDATETANK INSPECTION COMP.: Powers EI INSPECTION YEAR: - SECTION 1-TANK BOTTOM(PRODUCT-SIDE)ASSESSMENT H.1.1 TANK CHARACTERISTICS MATCH(3) IF NO SEE CONTROLTANK(1) CANDIDATE TANK(2) YES NO SEC.(4) a) YEAR TANK ERECTED 1991 1991 0 ❑ H.2.1.1 b) BOTTOM MATERIAL 5/16-in A36 5/16-in A36 Q ❑ H.2.1.2 c) CORROSION ALLOWANCE 0 0 0 ❑ H.2.1.4 d) BOTTOM LINING TYPE NONE NONEv❑ ❑ H.2.1.5 e) BOTTOM LINING THICKNESS N/A N/A ❑ ❑ H.2.1.5 f) BOTTOM LINING AGE N/A N/Ar❑ ❑ H.2.1.5 H.1.2 CURRENT SERVICE CONDITION MATCH(3) IF NO SEE CONTROLTANK(1) CANDIDATE TANK(2) YES NO SEC.(4) a) CURRENT PRODUCT NAME DIESEL DIESEL ❑ ❑ H.2.1.30 b) PRODUCT CLASS.(TABLE H.1) A A 0 ❑ H.2.1.10 c) SPECIFIC GRAVITY OF PRODUCT 0.92 0.92 0 ❑ H.2.1.10 d) NORMAL OPERATING TEMP. AMBIENT AMBIENT ❑ ❑ H.2.1.10 e) WATER BOTTOM? N/A N/A ❑ ❑ H.2.1.10 f) SULFUR CONTENT <1% <1% ❑ ❑ H.2.1.10 g) TIME IN THIS SERVICE 10 10 r❑ ❑ H.2.1.10 h) PRODUCT CORROSIVITY similar product similar product El ❑ H.2.1.10 H.1.3 PREVIOUS SERVICE CONDITIONS MATCH(3) IF NO SEE CONTROLTANK(1) CANDIDATE TANK(2) YES NO SEC.(4) a) PREVIOUS PRODUCT NAME SAME SERVICE SAME SERVICE r❑ ❑ H.2.1.10 b) PRODUCT CLASS.(TABLE H.1) SAME SERVICE SAME SERVICE 0 ❑ H.2.1.10 c) SPECIFIC GRAVITY OF PRODUCT SAME SERVICE SAME SERVICE ❑ ❑ H.2.1.10 d) NORMAL OPERATING TEMP. SAME SERVICE SAME SERVICE ❑ ❑ H.2.1.10 e) WATER BOTTOM? SAME SERVICE SAME SERVICE ❑ ❑ H.2.1.10 f) SULFUR CONTENT SAME SERVICE SAME SERVICEr❑ ❑ H.2.1.10 g) TIME IN THIS SERVICE SAME SERVICE SAME SERVICE ❑ ❑ H.2.1.10 h) PRODUCT CORROSIVITY SAME SERVICE SAME SERVICEr❑ ❑ H.2.1.10 H.1.4 CONCLUSIONS a) Does this assessment include additional assessment documentation(see H.2.1) ❑YES 2]NO b) Based on the criteria reviewed in this similar service evaluation,similar service is❑ORisNOT ❑recommended for this tank(check appropriate box) c) The corrosion rate to be applied to the product-side of the tank bottom is: 0.00263 in/yr d) The corrosion rate to be applied to the product-side of the tank bottom annular is: 0.00210 in/yr COMMENTS: NOTE THE DATASHEETSHALL BE MAINTAINED IN THE RECORD FILE ASPER 6.8 ASSESSED BY: Jade C.Geronimo/Gary Powers DATE: 6/3/2019 APPROVED BY: DATE: (tank owner/operator) NOTE(1)The control tank is the tank for which service conditions and corrosion rates are well known. NOTE(2)The candidate tank is the tank to be compared to the control tank to determine if similar service concepts apply. NOTE(3)"Y"or"yes"indicates that the candidate tank criterion essentially matches the control tank. NOTE(4)If the candidate tank criterion does not match the control tank criterion,see H.2.1. API 653 SIMILAR SERVICE YELLOW FREIGHT TANK 2 TRACY,CA 2019.DOCX Page 18 of 21 Date Printed:614119 9:53 AM ©2017 PE&I Inc.