40 CFR Appendix Table 27 to Subpart G of Part 63, Summary of Internal Floating Deck Fitting Loss Factors (KF) and Typical Number of Fittings (NF)

Table 27 to Subpart G of Part 63 - Summary of Internal Floating Deck Fitting Loss Factors (KF) and Typical Number of Fittings (NF)
Deck fitting type Deck fitting loss factor (KF) a Typical number of fittings (NF)
Access hatch 1.
Bolted cover, gasketed 1.6
Unbolted cover, gasketed 11
Unbolted cover, ungasketed b 25
Automatic gauge float well 1.
Bolted cover, gasketed 5.1
Unbolted cover, gasketed 15
Unbolted cover, ungasketed b 28
Column well (see Table 24).
Builtup column-sliding cover, gasketed 33
Builtup column-sliding cover, ungasketed b 47
Pipe column-flexible fabric sleeve seal 19
Pipe column-sliding cover, gasketed 32
Pipe column-sliding cover, ungasketed
Ladder well 1.
Sliding cover, gasketed 56
Sliding cover, ungasketed b 76
Roof leg or hanger well (5 D/10 D 2/600) c.
Adjustable b 7.9
Fixed 0
Sample pipe or well 1.
Slotted pipe-sliding cover, gasketed 44
Slotted pipe-sliding cover, ungasketed 57
Sample well-slit fabric seal, 10 percent open area b 12
Stub drain, 1-in diameter d 1.2 (D 2/125) c.
Vacuum breaker 1.
Weighted mechanical actuation, gasketed b 0.7
Weighted mechanical actuation, ungasketed 0.9

a Units for KF are pound-moles per year.

b If no specific information is available, this value can be assumed to represent the most common/typical deck fittings currently used.

c D = Tank diameter (feet).

d Not used on welded contact internal floating decks.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code

Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 63 after this date.

  • 2017-04-06; vol. 82 # 65 - Thursday, April 6, 2017
    1. 82 FR 16736 - Mercury and Air Toxics Standards (MATS) Electronic Reporting Requirements
      GPO FDSys XML | Text
      Final rule.
      This final rule is effective on April 6, 2017.
      40 CFR Part 63