§ 63.168 Standards: Valves in gas/vapor service and in light liquid service.
(a) The provisions of this section apply to valves that are either in gas service or in light liquid service.
(1) The provisions are to be implemented on the dates set forth in the specific subpart in 40 CFR part 63 that references this subpart as specified in paragraph (a)(1)(i), (a)(1)(ii), or (a)(1)(iii) of this section.
(i) For each group of existing process units at existing sources subject to the provisions of subpart F or I of this part, the phases of the standard are:
(A) Phase I, beginning on the compliance date;
(B) Phase II, beginning no later than 1 year after the compliance date; and
(C) Phase III, beginning no later than 2 1⁄2 years after the compliance date.
(ii) For new sources subject to the provisions of subpart F or I of this part, the applicable phases of the standard are:
(A) After initial start-up, comply with the Phase II requirements; and
(B) Beginning no later than 1 year after initial start-up, comply with the Phase III requirements.
(iii) Sources subject to other subparts in 40 CFR part 63 that reference this subpart shall comply on the dates specified in the applicable subpart.
(2) The owner or operator of a source subject to this subpart may elect to meet the requirements of a later phase during the time period specified for an earlier phase.
(3) The use of monitoring data generated before April 22, 1994 to qualify for less frequent monitoring is governed by the provisions of § 63.180(b)(6) of this subpart.
(b) The owner or operator of a source subject to this subpart shall monitor all valves, except as provided in § 63.162(b) of this subpart and paragraphs (h) and (i) of this section, at the intervals specified in paragraphs (c) and (d) of this section and shall comply with all other provisions of this section, except as provided in § 63.171, § 63.177, § 63.178, and § 63.179 of this subpart.
(1) The valves shall be monitored to detect leaks by the method specified in § 63.180(b) of this subpart.