【Mixed loading is prohibited in principle🚫】Regarding the storage rate relative to the internal volume of transport containers🚚: Class B Group 4 Hazardous Materials Handler Exam Preparation No.34

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Classification of Class 4 Hazardous Materials🌟

The overview of Class 4 hazardous materials is as follows.
This is a matter that should be memorized with top priority.

In addition, in the table summarized below, I would appreciate it if you could read it with the understanding that
the oil types higher up have higher danger levels
(the oil types lower down have lower danger levels).

※Remember the danger level and designated quantity as a set!

In principle, mixed loading of different classes is prohibited🚫

As a general rule, hazardous materials of different classes
cannot be loaded together in the same vehicle.

However, if the hazardous material is 1/10 or less of the designated quantity,
mixed loading becomes possible👀

Classes that can be mixed with Class 4 hazardous materials

Regardless of the designated quantity, the following three classes of hazardous materials
can be mixed with Class 4 hazardous materials.

Summarizing briefly from the cited diagram above,
mixed loading of non-Class 4 hazardous materials is possible for "combinations that add up to 7"
hazardous material class combinations💚

・Class 1 & Class 6
・Class 2 & Class 5
・Class 3 & Class 4

※Class 2-4 and Class 4-5 can also be mixed

Storage rate of hazardous materials relative to the capacity of transport containers

The key is to ensure that it does not leak at a liquid temperature of 55°C!

※Note that it is not 60°C

Obligations when transporting hazardous materials in excess of the designated quantity

① Attach a "Danger" sign to the front and back of the vehicle

② Equip the vehicle with
fire extinguishing equipment suitable for the hazardous materials🔖

③ Temporary stops during breaks, etc., must be in a "safe place"

[Review] Obligation to install signs 🚨

Manufacturing facilities, etc., are required to install signs
indicating that they are manufacturing facilities, etc., for "hazardous materials."

Signs to be installed at manufacturing facilities, etc.

Size: Width 0.3m or more x Length 0.6m or more
Color: Black letters on a white background
Content: State the name

However, mobile tank storage facilities (tank trucks)
are excluded.

Signs to be installed at mobile tank storage facilities ✨

Size: 0.3m square or more and 0.4m square or less
Color: Yellow letters on a black background (reflective paint, etc.)
Content: Display "Danger" (Ki)

Obligation to install notice boards

Manufacturing facilities, etc., are required to install notice boards
displaying "necessary items regarding fire prevention."

Notice boards displaying hazardous materials, etc.

Notice board color: White
Letter color: Black
Width: 0.3m or more
Height: 0.6m or more

As a concrete example, it will be the following type of sign,
so let's visualize it together.

On a board with a width of 0.3m or more and a length of 0.6m or more,
the notice board color must have a white background and black letters
is the rule!

Notice boards displaying hazardous materials, etc.,
must contain the following 5 items 🔖

1. Class of hazardous materials

2. Product name of hazardous materials

3. Maximum storage (handling) quantity

4. Multiple of designated quantity

5. Name (job title) of the hazardous materials safety supervisor

*Since there is no mention of fire extinguishing methods, etc.,
be careful not to get caught by 5-choice questions!

"Stop engine while refueling" sign ⛽

This is a sign installed at a refueling station,
the color is yellow-red for the background and black for the text.
It is necessary to install a sign with a width of 0.3m or more and a length of 0.6m or more.

Sign displaying precautions 🌟

Signs displaying precautions will be provided according to the properties of the hazardous materials stored or handled.

The size will be 0.3m or more in width and 0.6m or more in length..

The precaution for Class 4 hazardous materials is"Keep away from fire".

Hazardous materials subject to "Keep away from fire"

Class 2 hazardous materials: Flammable solids
Class 3 hazardous materials: Spontaneously combustible substances
Alkyl aluminum, alkyl lithium

Class 4 hazardous materials: All
Class 5 hazardous materials: All

Hazardous materials subject to "Caution: Fire"

Class 2 hazardous materials: All except flammable solids

Hazardous materials subject to "Water prohibited" 💦

Class 1 hazardous materials: Alkali metal peroxides
or substances containing them

Class 3 hazardous materials: Water-reactive substances

Various laws and regulations regarding hazardous materials 🌟

That's all for today's output!

My working life has begun, and compared to when I was a university student,
I have relatively less disposable time, but
I will do my best to continue even for 30 minutes every day!

I want to make effective use of the means called qualification study💖

By utilizing the means of "qualification study," which is one of my hobbies, I want to make the upcoming full-scale
working life a better time🌈

I believe the important thing is to clearly distinguish between "purpose" and "means" and work accordingly.
In short,
passing the exam and obtaining the qualification is not the purpose
itself.My true desire is to use the means of qualification study to efficiently advance learning that connects to my work!The


Class B Group 4 Hazardous Materials Engineer

that I will be studying from now on is often said to be a qualification with high demand even among hazardous materials engineer exams.This is because the Class B Group 4 Hazardous Materials Engineer qualification is in high demand across various job types and workplaces, making it a qualification that is likely to work in your favor when changing jobs or seeking employment👍
Furthermore,

【Preparation for the Class B Group 4 Hazardous Materials Engineer Exam】

when creating posts for, I would appreciate it if you could understand the following three points in advance.

① Thoroughly comply with company confidentiality obligations② Strive to appropriately cite reference materials③ Do not monetize and continue as a hobbyI will study steadily and systematically every day
and aim to take and pass the exam as soon as possible🔥
Let's continue to advance



Class B Group 4 exam



preparation together with me💖

Exam subjects for the Class B Group 4 Hazardous Materials Engineer Exam📚

The exam subjects for the Hazardous Materials Class B Group 4 are summarized below into the
"Laws and Regulations Concerning Hazardous Materials"
"Basic Physics and Basic Chemistry"
"Nature of Hazardous Materials and Methods of Fire Prevention and Extinguishing"
these three subjects🔖And, this

exam time is 2 hours and the question composition is 15 questions on laws and regulations,
and the other two (basic chemistry, nature of hazardous materials, etc.)
are 10 questions each, for a
total of 35 questions on the exam.And, it is answered using a

mark sheet where you choose one answer from 5 options
!

Passing line for Class B Group 4

To pass, a correct answer rate of 60% or more is required for each subject
👀In other words, if you do not reach 60% in even one subject, you will not be able to pass the exam.

＜Exam composition and minimum line＞
Laws and Regulations: 9/15 questions
Basic Chemistry: 6/10 questions
Nature/Extinguishing: 6/10 questions

Difficulty level based on pass rate

According to the Exam Implementation Status (March) - Fire Defense Safety Center of Japan
the
pass rate for Hazardous Materials Class B Group 4 is approximately 30-40%👀This is a pass rate almost equivalent to the Class A Hazardous Materials Engineer, which is known as a difficult exam💦

On the other hand, the pass rates for Class B Groups 1-3, 5, and 6 are around the 60% range, so looking at these numbers,


you can see that the pass rate for Class B Group 4 is low

.It is quite a challenging exam, isn't it👀

Reference materials used in creating this post

Periodic Table of Elements

Based on these materials, I will continue to advance Class B Group 4
Hazardous Materials Engineer Exam preparation!

Introduction to recommended magazines🔔

I will strive to further expand the content in the future,
so thank you for your continued support📚

Thank you very much for watching until the end🌈

Although I am still shallow and inexperienced,
I will utilize the best environment called note
and devote myself to growing every day🔥

I think it is truly meaningful to be able to embody input premised on output,
and since it remains as a record of growth,
I feel it is very rewarding.
Even after becoming a working adult, I would like to continue note as much as possible,

but since it is an activity as a hobby,
I will prioritize it accordingly!
I would be very happy if you could feel free to comment, like, & share the article,
and follow my account✨