Safe operation of your xTool D1/D1 Pro requires a trained Laser Safety Officer (LSO).xTool has consulted with laser experts to design these xTool D1/D1 Pro LSO Training Materials to help you in complying with your LSO responsibilities and ensure that you operate your xTool D1/D1 Pro safely.

The first document, the xTool D1/D1 Pro LSO training, has three parts:

● The first section, "xTool D1/D1 Pro Safe Operation", describes the procedures to ensure safe operation.

● The second section, "Laser Safety Officer Responsibilities", describes your role as the Laser Safety Officer for your xTool D1/D1 Pro.

● The third section, "About Lasers and Laser Safety", describes general information about lasers and laser safety as well as regulations about lasers.

The second document, "xTool D1/D1 Pro Laser Safety Program", is a laser safety program document that you, as the LSO for your xTool D1/D1 Pro, may adopt.

The third document, "xTool D1/D1 Pro Laser Standard Operating Procedure", is an SOP document that you may adopt that is a part of the xTool D1/D1 Pro Laser Safety Program.

The fourth document, "Warning Sign", is a sign you need to choose to use as a compliance measure described in the SOP.

 

Class 4 Conditions

Your xTool D1/D1 Pro is a Class 4 laser. You are required to wear safety glasses throughout the use. And, every person who uses the xTool D1/D1 Pro must read and abide by the user manual and all instructions in the xTool App.

The provided SOP does not permit safe operation in Class 4 conditions, so the LSO must create an SOP that does. Ultimately, the LSO is responsible for defining what that entails and describing and enforcing it with that SOP, and the laser operator is responsible for ensuring compliance and safe operation. Some key elements of a Class 4 SOP may include:

xTool Enclosure

You can shop for foldable and smoke-proof covers for D1/D1/D1 Pro and other laser engravers on xTool's official website.

Appropriate safety glasses

xTool D1/D1 Provides a pair of safety glasses appropriate for use with your xTool D1/D1 Pro under Class 4 Conditions.

An appropriate laser safety sign placed at the entryway to alert people to the hazards inside. xTool has provided a sample sign (below).

 

ANSI Z136.1 describes guidelines for a safety program that will minimize the hazards of a Class 4 laser like the xTool D1/D1 Pro. Primary safety responsibility rests with someone designated as the Laser Safety Officer, or LSO. This document is designed to assist you in acting as the LSO for one or more xTool D1/D1 Pro units. It does not provide sufficient information to advise you on acting as the LSO for any other laser.

The LSO verifies the classification of the laser. The LSO determines the level of hazard by considering the details of the laser and creates a standard operating procedure (SOP) that determines what control measures (like training, and safety glasses) should be used.

The LSO is then responsible for helping and training other laser users, ensuring safety compliance, analyzing any possible hazards, providing safety equipment, ensuring all regulations are complied with including (in the US) CDRH, OSHA, and state regulations, and auditing the use of the laser to make sure it’s used safely.

Beyond these responsibilities, the LSO must also recommend and approve signs, labels, protective equipment, facilities, equipment, and any modifications, maintain records, approve laser system operation, and investigate accidents should one occur. The LSO is ultimately the one responsible for determining if and how a laser may be safely operated.

 

The LSO must analyze the hazards present in the lasers for which they are responsible. The LSO may rely on an expert for the execution of hazard analysis.

 

Based on the Hazard Analysis, the LSO must create a Standard Operating Procedure (SOP) that describes the control measures required to minimize hazards.

 

Lasers are a special kind of light source. Most light is made of many different colors, all shining out in lots of directions at once. Laser light is different in three ways.

First, laser light is monochromatic - just one color. Sometimes that color is visible, like the low-power red laser that you can see your xTool use to measure material when it’s focusing. Sometimes it’s invisible, like the high-power infrared laser beam your xTool uses to cut and engrave material.

In technical discussions, people describe lasers as producing“nonionizing electromagnetic radiation”. That describes a broad category that includes everything from sunshine to radio waves. Instead of talking about color, they use the term "wavelength".

The second difference between laser light and regular light is that laser light is directional. That means that it can be made to travel in a straight line, in a beam, without spreading out much.

The third difference is that laser light is coherent. That means that each lightwave is synchronized with the others.

It’s very hard to get light to move in a straight line, without spreading out. If the waves aren’t lined up, or if there’s a mix of colors and directions, the beam will spread out. Lasers, however, can stay lined up for a long distance - and, importantly, can be focused down to a point.

Lasers' greatest effectiveness and danger, as compared to ordinary light, comes from lasers' ability to be focused.

 

The very first laser used a strobe light and a ruby crystal. The light from the strobe was amplified in the ruby crystal, stimulating it to emit nonionizing electromagnetic radiation at 694 nanometers. The acronym“LASER” comes from this experiment - light amplification through stimulated emission of radiation.

These first lasers were called "solid-state" lasers because the action parts were solid crystals. Shortly after the development of solid-state lasers came gas lasers, which can resemble neon signs. Electricity causes gas in a tube to glow. Specially tuned mirrors amplify the light, and the laser beam emerges.

 

There are four measurements used to describe the effect of a laser.

Joules measure energy. If you shine a light on a gram of water until it absorbs 1 joule of energy, the water will heat by about a quarter of a degree Celsius.

Watts measures power. If you turn on a one-watt light for a second, it will put out 1 joule during that time.

Joules per square centimeter measures radiant exposure. If you focus down that one-watt light to a square centimeter of paper and shine it for a second, that one joule will spread over the paper, and it will heat up slightly, just like the water. However, if you focus it down to 1/100th the size, the paper may singe and turn brown.

Finally, watts per square centimeter measure irradiance. If you keep shining that one-watt light on the paper, it will keep adding joules of energy. If it’s focused to one square centimeter, it will slowly warm. If it’s focused to 1/100th the size, the paper may catch fire.

 

Laser beams can be hazardous because the energy of the laser can damage the eyes and skin. This can cause damage to both eyes and skin. The risk is higher if the laser is more powerful if it is more focused, and if it stays in one place for a longer time, so all of these factors are considered when assessing safety.

The laser beam can strike a person in one of three ways. First, the laser can be pointed at the person directly. Second, in specular reflection’, the laser can be reflected toward a person. Third, in diffuse reflection’, the laser strikes a surface that is not a mirror and scatters the light in all directions. Because the light from a diffuse reflection is scattered, it is not as hazardous as direct or reflected light, but there may still be enough intensity to cause damage.

 

Lasers are classified by the level of radiation that may be encountered during normal operation.

Class 1 lasers are incapable of causing injury during normal operation. Class 1M lasers are the same, except unless magnifying optics are used. The red measuring laser in the xTool D1/D1 Pro is a Class 1 laser.

Class 2 lasers are incapable of causing injury in less than 0.25 seconds. Class 2M lasers are the same, except unless magnifying optics are used.

Class 3R lasers are marginally unsafe if the beam is directed at the eye. Class 3B lasers are hazardous if the beam is directed at the eye, but are usually not an eye hazard if the beam is scattered.

Class 4 lasers are eye and skin hazards for both direct and scattered exposure. The infrared printing laser in the xTool D1/D1 Pro is a Class 4 laser.

 

In the US, laser manufacturers like xTool are regulated by the Center for Devices and Radiological Health (CDRH) and are required to follow 21 CFR 1040.10 and 1040.11, which are federal laws. In many other countries (but not the US), both laser manufacturers and laser users are required to follow IEC60825.

ANSI Z136.1 is a voluntary standard that describes how to use lasers safely. OSHA (a US federal law that applies to workplaces but not to private homes) requires a safety program like that described in the ANSI standard.

There may be other laser regulations depending on your country, state, and even city, and regulations may change. This information is provided to assist you in creating a safety program as described by ANSI Z126.1, but can not advise you on legal compliance.

 

There are additional hazards to your xTool D1/D1 Pro. Always operate your xTool D1/D1 Pro in the manual and follow all instructions in the xTool App to minimize hazards.

 

When using a laser to process materials, a variety of air contaminants may be produced that can be hazardous. The air must be filtered to remove those contaminants. Follow the user manual in your xTool D1/D1 Pro to ensure that all exhaust is either properly treated or discharged outdoors where it can safely dissipate.

 

Processing metals with a laser may result in the release of ultraviolet light. If your xTool D1/D1 Pro produces a bright light that can not be viewed comfortably, look away.

 

The material that produces the laser beam may emit harmful levels of UV and/or IR light. The D1/D1 Pro has been tested to ensure less laser damage to your vision when viewing through the hood.

 

This program applies to xTool D1/D1 Pro Laser operated by xTool D1/D1 Pro Owner. This program is based on the guidance of ANSI Z136.1-2014, the American National Standard for Safe Use of Lasers. The proper implementation of this program will assure that laser exposures are always below the maximum permissible exposure (MPE) limits.

An individual designated as the Laser Safety Officer (LSO) shall have the responsibility and authority to assure compliance with this program. The LSO shall:

Provide hazard evaluations for xTool D1/D1 Pro laser

Specify control measures for the xTool D1/D1 Pro laser and assure implementation

Approve procedures, SOPs, protective equipment, signs, and labels

Assure that all laser personnel receive appropriate safety training

Monitor the program and assure compliance

Maintain program records

The LSO shall have final authority in determining xTool D1/D1 Pro laser control measures and may approve alternate controls when these are appropriate based on the judgment of the LSO. xTool D1/D1 Pro laser shall be operated only with the approval of the LSO. The LSO shall have the authority to terminate laser operations at any time.

 

Class 1 laser systems are incapable of producing damaging radiation levels during normal operation and are exempt from any control measures. Class 1 laser systems may contain higher class lasers and may produce laser hazards if operated with interlocks defeated. Only authorized personnel may operate class 1 laser systems with interlocks defeated. Operators of class 1 laser systems with embedded class 3B or class 4 lasers shall receive a laser safety briefing.

Class 1M laser systems are incapable of producing hazardous exposure conditions during normal operation unless the beam is viewed with optical instruments. Operators of Class 1M laser systems shall receive a laser safety briefing.

Class 2 laser systems emit visible light only at a power level of 1 milliwatt or less. The normal aversion response to bright light is adequate protection. Staring into the beam of a class 2 laser is hazardous. Operators of class 2 laser systems shall receive a laser safety briefing.

Class 2M laser systems emit visible light only. The normal aversion response to bright light is adequate protection for unaided viewing. However, viewing the beam with optical aids is potentially hazardous. Operators of Class 2M laser systems shall receive a laser safety briefing.

Class 3R laser systems are potentially hazardous under some viewing conditions, but the probability of an actual injury is small, and the control measures for safe use are straightforward. Most laser pointers fall in this class. Operators of class 3R laser systems shall receive a laser safety briefing. (Most lasers previously classified as class 3a fall in this category.)

Class 3B laser systems are eye hazards for intrabeam viewing and specular reflections, even for momentary exposures, but diffuse reflections are not usually hazardous. Class 3B laser systems shall be operated only in laser-controlled areas by authorized operators. Operators of class 3B laser systems shall receive approved laser safety training.

Class 4 laser systems are eye hazards and skin hazards for intrabeam exposures, specular reflections, and diffuse reflections. They are also fire hazards and may produce laser-generated air contaminants. Class 4 laser systems shall be operated only in laser-controlled areas by authorized operators. Operators of class 4 laser systems shall receive approved laser safety training. Written Standard Operating Procedures (SOP) are required for class 4 laser operation. The xTool D1/D1 Professional laser meets the conditions of the FDA for Class 4 lasers under Title 21 of the Code of Federal Regulations.

When operating in Class 4 conditions, additional laser safety training is required and must be prepared and administered by the LSO.

The requirements for the xTool D1/D1 Pro Laser controlled area shall be determined by the LSO. The minimum requirements considered by the LSO for the xTool D1/D1 Pro Laser controlled area are:

If needed entryway controls to allow only authorized personnel or approved spectators to enter the xTool D1/D1 Pro Laser control area. (Administrative controls are acceptable.)

Laser safety eyewear available and used by the SOP for the xTool D1/D1 Pro Laser.

Beam control (barriers and beam blocks) to limit laser hazards within the controlled area.

Written SOP for the xTool D1/D1 Pro Laser.

Training of the xTool D1/D1 Pro Laser operators.

Employees who work with the xTool D1/D1 Pro Laser with the beam exposed shall:

Energize or work with lasers only when authorized to do so.

Comply with laser safety rules and work procedures.

Notify their supervisor or the LSO in case of potential accident or injury or suspected unsafe condition.

At an interval determined by the Laser Safety Officer, the xTool D1/D1 Pro Laser will be audited for safety:

1) It will be visually inspected for damage.

2) The most recent user version of the manual will be re-read.

3) The laser will be energized and the lid opened to confirm that the interlocks correctly interrupt operation.

4) The Laser Safety Program will be reviewed to ensure that the program is current and compliant.

A record of this audit will be completed, printed, signed, dated, and retained.

The LSO shall maintain records that document the Laser Safety Program. These records shall include:

Laser hazard analysis reports for the xTool D1/D1 Pro Laser

A list of operators who have been trained and permitted to use the xTool D1/D1 Pro Laser

Standard Operating Procedures for the xTool D1/D1 Pro Laser

Approvals of alternate laser control measures, if implemented

Laser Safety Audit checklist

Scope: This SOP applies to the normal operation of the xTool D1/D1 Pro Laser as specified by the manufacturer.

System Description: Semiconductor laser material processing system.

Potential Hazards

A. Eye hazard from the direct, reflected, or scattered beam.

B. Skin hazard and fire hazard.

C. Electrical hazard inside the power supply.

D. Laser Generated Air Contaminants.

Control Measures

A. The LSO will allow physical access to the laser to users who have been enrolled in the xTool Creative Space or Lightburn software and thereby receive safe operating instructions.

B. All users of the xTool D1/D1 Pro Laser will comply with the user manual and all instructions in the xTool App software at all times.

C. Keep all combustibles, tools, and reflective surfaces away from the beam path. Make sure you know where the beam is and stay clear.

D. Work involving access to the power supply shall be done by the manufacturer with no exceptions.

E. Maintenance shall be done with the laser system turned off.

Required Training: When operating in Class 4 conditions, additional laser safety training is required and must be prepared and administered by the LSO.

For emergency medical response call ____. Report all incidents to the LSO.

Authorized Personnel

The following personnel are authorized to operate this system.

 

This training document is based on existing searchable documents, including but not limited to 21 CFR Part 1040.10, 1040.11, ANSI Z136.1 Standard - Guidance for Implementing a Safe Laser Program, OSHA, the U.S. Occupational Safety and Health Alliance, the U.S. Laser Protocol： the Laser Regulators and the Center for Devices and Radiological Health, and other publicly available documents and standards issued by the above agencies at the time of this document's development. The documents and standards issued by these organizations and available in the public domain have been prepared, and the courses and presentations of some laser safety experts in the public domain have also been taken into account. The final right of interpretation of this document belongs to XTOOL.