Hello, everyone.

This is Enta.

You know how sometimes the anchor goes in too deep and you can't pull it out anymore?

That means you've drilled too deep. It's an over-drill.

Because the borehole length exceeds 60 meters, it is not possible to retrieve the anchor.

This is a common mistake made by inexperienced operators performing anchor installations, but,

Is this...Responsibility for the OperationThat's it.

It is by no means my responsibility.

 

I will list the checkpoints for the operator to follow when drilling holes.

1. Drilling Angle (Direction)

2. Drilling Length

3. Anchor Length

4. Nagahori

5. Number of outer casings (including inner casings)

6. Remaining Casing Length

 

This is an OP job!

Since this is important, I'll write it again.

It's an operating room job!

 

It happens all the time—the guy right here claims he miscounted.

They blame others.

That's not right. It's the surgeon's responsibility.

What can I do to avoid making mistakes like this?

This is actually surprisingly simple—do you get it?

 

The answer is

Don't leave unnecessary casings lying around!

That's it.

If you want to use it to retrieve an inner tube that has come loose or something like that,

I just leave out the casings that are extremely easy to spot, like the 50-centimeter ones.

That way, you can immediately tell that this casing has nothing to do with the drilling operation.

Just by doing this much, you can easily prevent construction mistakes like this.

Now, let's consider how much money was lost due to this drilling error.

Labor for 4 people + fuel + equipment costs + material costs + construction time

And doing this all over again will double the construction costs.

It's a huge waste of time and money.

 

This means that operators must carefully verify and carry out the work to prevent situations like this from occurring.

Realizing the importance of checking,

I hope they’ll grow through their failures.

 

See you later.