01 / 25CoreLaws and regulationsREG
Under the sales restriction, who may buy refrigerant for use in an appliance?
CORE-0001Checked against eCFR 2026-08-13verify_state: draft
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25 questions, with the paragraph behind each answer
These are real items from the shipping question bank, not a demonstration set written for this page. Answer one and you get the source class, the citation, the paragraph quoted verbatim, and the eCFR issue date it was checked against.
Why the citation appears only after you answer
For most of these items the quoted paragraph contains the answer in plain sight, and for the definition items the citation reference is the answer — the item is cited to 40 CFR § 82.152 “…” and the question asks which term is being defined. So the citation is withheld until you commit, exactly as it is in the app. Nothing that identifies the correct option is sent to your browser before you choose one; if you would rather read the key than guess, every card has a Show the answer control.
25
Questions here
17
Appendix D areas
25
Distinct paragraphs
2026-08-13
eCFR snapshot
What this set covers, and what it does not
No two questions here cite the same paragraph. The bank deliberately repeats a paragraph across Type I, Type II and Type III because a technician only ever studies one of them; a page showing all four at once would read as padding, so the duplicates are dropped.
Seventeen of the eighteen Appendix D subject areas appear. The one that does not is Type III shipping: the bank currently holds two shipping paragraphs, § 82.164(a)(3) and § 82.164(c), and both are spent on the Type I and Type II cards above. Saying so is cheaper than being caught at it.
Every item here carries source class REG — the answer is stated in Subpart F itself. The full class taxonomy is on the methodology page.
| Bank | Items |
|---|---|
| Core | 10 |
| Type I | 5 |
| Type II | 6 |
| Type III | 4 |
Each test for each type of certification must include at least 25 questions drawn from the core group and at least 25 questions drawn from each relevant technical group. These questions must address the subject areas in appendix D of this subpart. — 40 CFR § 82.161(c), eCFR snapshot August 13, 2026. Twenty-five questions is one section of a real test, not a whole one.
The questions
Snapshot 2026-08-13
- 02 / 25CoreLaws and regulationsREG
What does the venting prohibition forbid during maintenance, service, repair or disposal?
CORE-0002Checked against eCFR 2026-08-13verify_state: draft - 03 / 25CoreEnvironmental impactREG
What does this subpart state as its purpose?
CORE-0004Checked against eCFR 2026-08-13verify_state: draft - 04 / 25CoreEnvironmental impactREG
A definition in this subpart begins “any maintenance, service, or repair that involves the removal”. Reading the quoted paragraph, which term does it define?
CORE-F0047Checked against eCFR 2026-08-13verify_state: draft - 05 / 25CoreEnvironmental impactREG
A definition in this subpart begins “any device that is intended to establish a connection”. Reading the quoted paragraph, which term does it define?
CORE-F0046Checked against eCFR 2026-08-13verify_state: draft - 06 / 25CoreEnvironmental impactREG
A definition in this subpart begins “any maintenance, service, repair, or disposal of an appliance”. Reading the quoted paragraph, which term does it define?
CORE-F0053Checked against eCFR 2026-08-13verify_state: draft - 07 / 25CoreEnvironmental impactREG
A definition in this subpart begins “to reprocess recovered refrigerant to all of the specifications”. Reading the quoted paragraph, which term does it define?
CORE-F0057Checked against eCFR 2026-08-13verify_state: draft - 08 / 25CoreEnvironmental impactREG
A definition in this subpart begins “to convert an appliance from one refrigerant to another”. Reading the quoted paragraph, which term does it define?
CORE-F0064Checked against eCFR 2026-08-13verify_state: draft - 09 / 25CoreChanging industry outlookREG
40 CFR § 82.152 "MVAC-like appliance" addresses mvac-like appliance means mechanical vapor compression. Reading the quoted paragraph, what weight does it specify?
CORE-D0005Checked against eCFR 2026-08-13verify_state: draft - 10 / 25CoreChanging industry outlookREG
40 CFR § 82.158(e) addresses percent refrigerant test stand when compressor. Reading the quoted paragraph, what percentage does it set?
CORE-D0008Checked against eCFR 2026-08-13verify_state: draft - 11 / 25Type ILeak detectionREG
40 CFR § 82.157(e)(2) addresses follow-up verification test performed within days. Reading the quoted paragraph, what period does it allow?
TYPE_I-D0096Checked against eCFR 2026-08-13verify_state: draft - 12 / 25Type IRecovery techniquesREG
40 CFR § 82.156(a)(1)(iii) addresses purposes oil changes evacuated pressurized pressure. Reading the quoted paragraph, what pressure does it require?
TYPE_I-D0097Checked against eCFR 2026-08-13verify_state: draft - 13 / 25Type ISafetyREG
40 CFR § 82.158(d)(6) addresses equipment equipped noncondensables purge device equipment. Reading the quoted paragraph, what percentage does it set?
TYPE_I-D0070Checked against eCFR 2026-08-13verify_state: draft - 14 / 25Type IShippingREG
40 CFR § 82.164(a)(3) addresses release more than percent refrigerant during. Reading the quoted paragraph, what percentage does it set?
TYPE_I-D0071Checked against eCFR 2026-08-13verify_state: draft - 15 / 25Type IDisposalREG
40 CFR § 82.156(i)(1) addresses section appliance leaking rate loss refrigerant. Reading the quoted paragraph, what percentage does it set?
TYPE_I-D0080Checked against eCFR 2026-08-13verify_state: draft - 16 / 25Type IIRecovery techniquesREG
A medium-, high- or very high-pressure appliance is to be opened for a repair that is not major. To what level must it be evacuated?
TYPE_II-0001Checked against eCFR 2026-08-13verify_state: draft - 17 / 25Type IILeak detectionREG
What is the applicable leak rate for commercial refrigeration equipment?
TYPE_II-0002Checked against eCFR 2026-08-13verify_state: draft - 18 / 25Type IILeak detectionREG
What must the owner or operator of an appliance normally containing 50 or more pounds of refrigerant keep?
TYPE_II-0003Checked against eCFR 2026-08-13verify_state: draft - 19 / 25Type IISafetyREG
40 CFR § 82.156(i)(11) addresses calculating annual leak rates purged refrigerant. Reading the quoted paragraph, what percentage does it set?
TYPE_II-D0141Checked against eCFR 2026-08-13verify_state: draft - 20 / 25Type IIShippingREG
40 CFR § 82.164(c) addresses event change ownership entity which reclaims. Reading the quoted paragraph, what period does it allow?
TYPE_II-D0133Checked against eCFR 2026-08-13verify_state: draft - 21 / 25Type IIDisposalREG
40 CFR § 82.156(e) addresses system-dependent equipment used appliances full charge. Reading the quoted paragraph, what weight does it specify?
TYPE_II-D0134Checked against eCFR 2026-08-13verify_state: draft - 22 / 25Type IIIRecovery techniquesREG
Before a low-pressure appliance is opened for a repair that is not major, what is required?
TYPE_III-0001Checked against eCFR 2026-08-13verify_state: draft - 23 / 25Type IIILeak detectionREG
40 CFR § 82.157(d)(2) addresses leaks will presumed repaired there further. Reading the quoted paragraph, what period does it allow?
TYPE_III-D0210Checked against eCFR 2026-08-13verify_state: draft - 24 / 25Type IIISafetyREG
40 CFR § 82.156(j) "Industrial process refrigeration" addresses where one appliance used both industrial. Reading the quoted paragraph, what percentage does it set?
TYPE_III-D0206Checked against eCFR 2026-08-13verify_state: draft - 25 / 25Type IIIDisposalREG
40 CFR § 82.156(a)(3) addresses january technicians evacuating refrigerant appliances full. Reading the quoted paragraph, what weight does it specify?
TYPE_III-D0203Checked against eCFR 2026-08-13verify_state: draft
Read the verify_state on each card
Every card prints the item’s verification state, and at the time of writing every item in the bank reads draft. That is the honest state: the mechanical checks pass — a resolvable citation, a quote that is a verbatim substring of the cited paragraph, four distinct options, an in-range answer, Subpart F scope — but the blind second-pass adjudication and the human sign-off are not yet recorded against these items, and the release gate refuses to promote an item without them.
We would rather show you the word draft than a badge that means nothing. The five checks, in order.
- draft
- Authored from a paragraph, mechanically checked, not yet signed off.
- verified
- Blind adjudication agreed with the answer and a human has signed the item off.
- flagged
- A check failed. The item is out of rotation until it is fixed or retired.
- retired
- Withdrawn. Its id is never reused, so answer history stays intact.
Found something wrong?
Then tell us which item id and which paragraph, and we will fix it or retire it. Every card carries its id in the footer for exactly that reason, and the app has a report control on every question. A bank that cannot be corrected in public is not a bank worth citing.
| Class | When it applies | What the item must carry |
|---|---|---|
| REG | The answer is stated in 40 CFR Part 82 Subpart F. | A paragraph citation that resolves on eCFR, and the paragraph quoted verbatim. |
| STAT | The answer comes from Clean Air Act Title VI or the Montreal Protocol, not from the subpart. | The statute or instrument cited by name and section, and the text quoted. |
| SCI | The answer is a physical or chemical fact, not a legal requirement. | A named public-domain scientific source, cited and quoted. |
| PRAC | The answer is accepted trade practice that is not written in the regulation. | An explicit badge saying so. The build rejects a practice item whose wording claims the regulation requires it. |