N.J. Admin. Code § 7:31-6.3

Current through Register Vol. 56, No. 23, December 2, 2024

Section 7:31-6.3 - Extraordinarily hazardous substance list

(a) The substances listed in Table I, Parts A, B, C, and D Group I and Group II (with its correlated thresholds listed in Table II at (c) below) constitute the Department's extraordinarily hazardous substance list.

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(b) The following conditions apply for determining whether RHSs or RHS mixtures listed in Part D of Table I are subject to the requirements of this chapter.

1. Individual RHSs listed in Table I, Part D, Group I that are received, stored, and handled in combination with one or more other chemical substances specifically formulated to inhibit the reactive hazard (such as water reactivity, pyrophoric, or self-reacting) of the RHS shall not be exempt from this chapter.

2. An RHS mixture is a combination of substances that is intentionally mixed in a process vessel and is capable of undergoing an exothermic chemical reaction which produces toxic or flammable EHSs or energy. RHS mixtures include a reactant, product, or byproduct that is a chemical substance or a mixture of substances having one or more of the chemical functional groups specified in Table I, Part D, Group II. An RHS mixture has a heat of reaction which, by convention, is expressed as a negative value for an exothermic reaction, that has an absolute value greater than or equal to 100 calories per gram of RHS mixture. Non-reacting substances such as solvents shall not be included in the determination of the heat of reaction value of the RHS mixture.

3. The heat of solution or dilution shall not be considered when determining whether a mixture of substances is an RHS mixture subject to this chapter.

4. RHS mixtures that are only processed in a scrubber that is operated as an air pollution control device in compliance with the conditions of a State permit pursuant to the Air Pollution Control Act, N.J.S.A. 26:2C-1 et seq. shall not be subject to this chapter.

5. The owner or operator shall determine and document the heat of reaction by using one of the following methods:

i. Testing the intended combination in a calorimetry test to the lower of 400 degrees Celsius or the maximum achievable temperature in the process vessel; or

ii. A generally accepted practice such as a literature review or engineering calculations applicable to the RHS mixture to the lower of 400 degrees Celsius or the maximum achievable temperature in the process vessel.

6. The heat of reaction of an RHS mixture in a semi-batch reaction shall be determined assuming that all reactants are added at the same time as in a batch reaction.

(c) Table II--Reactive Hazard Substance Mixture Threshold Quantities

N.J. Admin. Code § 7:31-6.3

Amended by R.1998 d.355, effective 7/20/1998.
See: 30 N.J.R. 908(a), 30 N.J.R. 2728(a).
Rewrote the section.
Amended by R.2003 d.335, effective 8/4/2003.
See: 35 N.J.R. 935(a), 35 N.J.R. 3618(b).
Rewrote the section.
Amended by R.2009 d.85, effective 3/16/2009.
See: 40 N.J.R. 5109(a), 41 N.J.R. 1206(b).
In Table I, rewrote Part C; in Table I, Part D, Group I, updated the "CAS #" column for entries 3, 11, 17 and 18, and in entry 17, substituted "dinitrate" for "dintrate"; in Table I, Part D, Group II, updated the "Functional Group(s)" column of entry 6, and inserted entry 44; in (b)1, inserted "not", deleted "as long as the appropriate inhibitor concentration is maintained." following "chapter", and deleted the last sentence; in the introductory paragraph of (b)2, deleted the former second sentence, and inserted the last two sentences; deleted former (b)2i; recodified former (b)2ii through (b)2iv as (b)3 through (b)5, and (b)2iv(1) and (b)2iv(2) as (b)5i and (b)5ii; rewrote (b)5i and (b)5ii; added (b)6; in (c), in the heading of the first column of Table II, deleted "of RHS Mixture" from the end; and deleted (d).