N.H. Code Admin. R. Env-A 1217.03

Current through Register No. 25, June 20, 2024

Section Env-A 1217.03 - Applicability Criteria for External Floating Roof Tanks

(a) Env-A 1217.04 shall not apply to the following external floating roof tanks:

(1) Any external floating roof tank having a storage capacity between 150,000 and 1,600,000 liters, equivalent to between 40,000 and 420,000 gallons, which is used to store produced crude oil and condensate prior to lease custody transfer;

(2) Any such tank used to store a VOL with a maximum true vapor pressure of less than 10.5 kPa, equivalent to 1.52 psia, under actual storage conditions, as determined by methods described in API Chapter 19.2, "Evaporative Loss From Floating Roof Tanks", first edition, April 1997, and as verified by records maintained consistent with the provisions of Env-A 900;

(3) Any such tank used to store waxy, heavy-pour crude oil;

(4) Any such tank used to store VOL which:

a. Has a maximum true vapor pressure of less than 27.6 kPa, equivalent to 4.0 psia;

b. Is of welded construction; and

c. Was equipped with one of the following prior to August 31, 1995:

1. A metallic shoe seal;

2. A liquid-mounted foam seal;

3. A liquid-mounted liquid-filled type seal; or

4. An EPA-approved closure equipment of demonstrated equivalence; or

(5) Any such tank that:

a. Is of welded construction; and

b. Was equipped with the following prior to August 31, 1995:

1. A metallic-type shoe primary seal; and

2. A shoe-mounted secondary seal.

(b) Except as provided in (a), above, Env-A 1217.04 shall apply to an external floating roof VOL storage tank with a storage capacity greater than 150,000 liters, equivalent to 40,000 gallons.

N.H. Code Admin. R. Env-A 1217.03

(See Revision Note at chapter heading for Env-A 1200) #9933, eff 6-1-11

Amended by Volume XXXIX Number 46, Filed November 14, 2019, Proposed by #12899, Effective 10/17/2019, Expires 10/17/2029