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Ontario Power Generation Pickering –B Nuclear Facility Sodium Hypochlorite System
Challenge
The sodium hypochlorite system at Ontario Power Generation (OPG) Pickering B is used to inject 12% chlorine bleach solution into the low and high pressure water systems during the months of April to October. The Bleach kills zebra mussels, which attach themselves to surfaces of pipes, and heat exchangers, if left alone, the build up of mussels can result in flow blockage and excessive corrosion.
The system, which was originally installed by OPG used PVC pipe, fittings, and valves. The system had numerous problems, the PVC material would become brittle, and crack causing leaks, and the system shutting down allowing the build up of zebra mussels in the systems.
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Solution
The solution was the use of the SPS/Resistoflex PVDF (KYNAR) lined pipe, fittings and valves. Through a series of meetings, and plant walk downs with the customer SPS found out that the sodium hypochlorite being used had free chlorine in it. The free chlorine will attack the make up of the PVC, which was causing it to become very brittle.
We recommended our PVDF (KYNAR) plastic lined piping products because it can handle the sodium hypochlorite and the free chlorine. This product is the combination of a schedule 40 carbon steel pipe on the outside, which offers strength and rigidity, and the chemical handling of the PVDF plastic on the inside of the pipe. Really the best of both worlds when it comes to piping.
The other challenge was our customer OPG needed some engineering support, and onsite services. We measured the entire PVC system, which included the pump skids. We produced isometric drawings, and a complete bill of material for ordering. Once the material arrived on site SPS provided onsite fabrication, and supervision of the installation.
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Results
The result has been a leak free system for well over 10 years now.
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Imperial Oil Limited Distribution Centres - Portable Tepid Water Eyewash Systems
Challenge
Our customer Imperial Oil came to us with a challenge to provide a portable eyewash unit that would function in extreme cold weather –50 deg. C while providing tepid water to the casualty. They were going to use this at their truck distribution centers across Canada.
The system, which was originally installed by OPG used PVC pipe, fittings, and valves. The system had numerous problems, the PVC material would become brittle, and crack causing leaks, and the system shutting down allowing the build up of zebra mussels in the systems.
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Solution
SPS was able to provide a solution through several of our suppliers. We provided a portable eyewash unit from Hughes Safety Showers, installed inside a heated fibreglass enclosure from SPS, which also provided heat to the water, inside the portable eyewash.
SPS also provided a complete alarm package to notify locally and remotely that someone was using the eyewash system, and potentially could be injured.
Through several site visits with our customer SPS was able to determine the right products to use. We provided the customer with complete P&ID drawings and bills of material. We also utilized the services of the Electrical Safety Authority ( ESA) to have the system approved electrically for the area of classification.
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Results
A well engineering portable eyewash unit that supplies tepid water in –50 deg. C weather. This unit is being used across Canada at all Imperial Oil truck distribution Centers.
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