On the evening of June 24, sudden and heavy rain swept across many areas in Zhejiang Province. The sky turned dark, lightning flashed, and thunder rolled within minutes. Rain poured down along with strong winds, creating a chaotic scene. As dark clouds rolled in, many pedestrians were caught off guard and quickly became "rainmen." In Hangzhou, several roads were flooded, and vehicles were submerged. This intense rainfall marked the beginning of the rainy season. With this in mind, it's important to understand what precautions should be taken during lightning strikes and how businesses can protect themselves from lightning-related disasters.
**Status: Sustained Rain Disrupts Life in Hangzhou – Metro Stations Take Measures**
At noon on June 27, reporters observed at the entrance of Metro City Station D that rainwater was flowing into the station’s passageways through the steps. To prevent further flooding, sandbags had been placed at the base of the stairs—two layers high, not very tall. Beyond that, a red non-slip carpet led directly into the station hall, clearly visible and serving as a visual warning.
Hangzhou Metro Group explained that in response to heavy rain or flood seasons, they have three emergency plans in place. First, the steps at each station entrance are designed to be 45 cm higher than the surrounding sidewalks, while the other sides have 80 cm high retaining walls. Second, each station is equipped with a 35 cm high flood gate that can be inserted into a slot when needed, raising the entire entrance to 80 cm above the sidewalk level. Additionally, sandbags are available for stacking at all entrances. Finally, if water seeps in, stations are equipped with sumps and pumps—each with two units, one for regular use and one as backup. These systems help pump rainwater into the city's drainage network.
**What Should You Do During Lightning Storms?**
With the intensity of the rain came powerful thunder and lightning. Here are some essential safety tips to follow:
- Stay indoors and close all windows and doors. If you're stuck outside without shelter, remove metal items like watches and glasses. Avoid standing near power lines, trees, or poles. Try to lower your body to reduce the risk of being struck by lightning. Keep your feet together to minimize the chance of step voltage.
- Avoid using unguarded electrical appliances like TVs or radios. Stay away from open windows, metal pipes, and doors. Unplug devices and turn off gas supplies. Don’t use hair dryers or electric shavers, and avoid touching faucets.
- Do not touch any metal objects such as antennas, water pipes, or metal doors. Avoid clotheslines and refrain from working on fences, power lines, or construction steel. Do not handle flammable materials in open containers.
- Limit phone use and avoid being near metal structures like fences, railings, or overhead wires. Stay away from high places like mountain tops or buildings. Avoid low structures like sheds or garages that lack proper lightning protection.
- Do not swim or engage in water activities. Avoid lakes, beaches, or open fields. Don’t use umbrellas in open areas, and avoid carrying long objects like golf clubs or fishing rods.
- If you feel charged—like your hair stands up or your skin tingles—immediately drop to the ground and seek help after the storm passes.
- Avoid riding bikes, motorcycles, or horses. Cars offer good protection due to their shielding effect, so staying inside a vehicle during a storm is safer.
**How Can Organizations Prevent Lightning Damage?**
- Regularly inspect lightning protection systems with a certified professional to ensure compliance with national standards.
- Assign a dedicated person to oversee lightning safety and establish clear procedures for maintenance and inspections.
- When designing new facilities, consider factors like geology, weather patterns, and building characteristics to implement advanced and effective lightning protection measures.
- Use only high-quality, standard-compliant lightning protection equipment. Avoid substandard products.
- For new constructions or equipment installations, redesign lightning protection systems accordingly—such as for computer networks or antenna placements.
- In the event of a lightning disaster, report the incident promptly to authorities to facilitate quick action and prevent future incidents.
Si3N4 ceramic is an important structural material. It is a kind of super-hard material. It is lubricious and wear-resistant. It does not react with other inorganic acids except hydrofluoric acid. It has strong corrosion resistance and resistance at high temperature. It is also resistant to thermal shock. It is heated to above 1,000 °C in air, and is rapidly cooled and heated rapidly without cracking. It is precisely because of the excellent properties of Si3N4 ceramics that it is often used to make bearings. , mechanical components such as gas turbine blades, mechanical seal rings, permanent molds.
Silicon Nitride Ceramic Pin,Silicon Nitride Ceramic Location Pins,Silicon Nitride Ceramic Welding Pin,Nitride Ceramic Locator Pin
Dongguan Haikun New Material Co., Ltd. , https://www.hkceram.com