Authority: IC 22-13-2-8

Affected: IC 22-12-1-5; IC 22-12-7; IC 22-13-2; IC 22-15-2-7; IC 22-15-6

Sec. 5. (a) Each of the following vessels must comply with the applicable requirements of the edition of the ASME B&PVC in effect at the time of construction, but are exempt from inspection and operating permit requirements:

1. (1) Vessels located on a farm and used solely for agricultural purposes.

2. (2) Boilers meeting the requirements of clauses (A), (B), (C), and (D) as follows:

   1. (A) Contain a volume less than one and one half (1 1/2) cubic feet.
   2. (B) Operate entirely full of a liquid heat transfer fluid that will not vaporize at the operating temperature and atmospheric pressure.
   3. (C) Have a gross output rating not exceeding three hundred thousand (300,000) Btus per hour.
   4. (D) Are not located in a place of public assembly.

3. (3) Unfired pressure vessels that:

   1. (A) contain only water under pressure for domestic supply purposes, including those containing air, if the compressed air serves only as a cushion or as part of an airlift pumping system; and
   2. (B) are located in a Class 2 structure as defined in IC 22-12-1-5 or a residential structure with less than seven (7) apartments.
4. (4) Steam cleaner as defined in 675 IAC 30-4-49.

(b) Each of the following objects are covered under the scope of the permit for the system of which it is a part and does not require a separate operating permit; however, the object must meet all other requirements of IC 22-15-6 and this article:

1. (1) Expansion tanks located within a system where the boiler in that system is regulated by this article.

2. (2) Hot water storage tanks that contain only water under pressure under the following conditions:

   1. (A) Temperature not to exceed two hundred ten (210) degrees Fahrenheit.
   2. (B) Protected from overpressure.
3. (3) Refrigeration vessels located in a skid-mounted unit where said unit is regulated by this article.

(Fire Prevention and Building Safety Commission; 675 IAC 30-1-5; filed Jan 5, 1996, 10:15 a.m.: 19 IR 1111; readopted filed Jul 9, 2001, 1:33 p.m.: 24 IR 3822; filed Dec 18, 2006, 1:17 p.m.: 20070117-IR-680060124FRA; readopted filed Sep 21, 2007, 9:16 a.m.: 20071010-IR-680070389RFA; readopted filed Oct 19, 2007, 1:08 p.m.: 20071114-IR-680070389RFA; readopted filed Sep 5, 2013, 10:09 a.m.: 20131009-IR-680130182RFA; readopted filed Sep 4, 2019, 2:20 p.m.: 20191002-IR-675190336RFA; filed Apr 28, 2021, 11:03 a.m.: 20210526-IR-675200627FRA, eff Jul 1, 2021; readopted filed Nov 18, 2025, 10:36 a.m.: 20251210-IR-675240566RFA) NOTE: Transferred from the Boiler and Pressure Vessel Rules Board (680 IAC 2-1-5) to the Fire Prevention and Building Safety Commission (675 IAC 30-1-5) by P.L.249-2019, SECTION 15, effective July 1, 2019.