& Retrieval System
The Caproco High Pressure Retrievable system provides access to a process system under full operating conditions. It is capable of operating at pressures up to 6,000 psi (0- 41.4 MPa). This system eliminates the need to interfere with normal operations to obtain vital corrosion data. Key system components are:
1. Access Fitting 2.Solid/Hollow Plug 3. Retriever 4. Service Valve
Access Fittings can be divided into two categories: Tee and Non-Tee. The more commonly used non-tee style fittings typically hold monitoring equipment such as corrosion coupons and probes.
Standard access fitting bodies are manufactured from hot rolled stock or forged bar; flanged fittings are machined from long weldneck forgings. All Caproco access fittings conform to NACE MR-01-75 Sour Service Specification. Various designs are available to cover a wide variety of monitoring applications.
Caproco tee style fittings are designed to enable a product to be injected into a system continuously or intermittently. They also enable the operator to draw a fluid sample from the system. The tee on the access fitting (with NPT threaded, socketweld or welded flanged connections) allows a nipple and shut off valve to be attached. Welded side-tee connections are welded using approved procedures and are stress relieved and inspected according to relevant prevailing codes.
If desired, tee style access fittings can be used to hold corrosion coupons or probes. The tee on the access fitting body may be sealed off (with a pipe plug or shutoff valve) and the corrosion monitoring equipment mounted on a hollow or solid plug. If a pipe plug is attached to the tee, the tee outlet cannot be used again until the system has been shut down or isolated.
The height of the access fitting body is increased to accommodate the tee. This additional height should be taken into account when calculating the length of the injection / sampling tube or insert.
Standard Caproco access fittings are manufactured to meet most service requirements, however changes in metallurgy will be made on customer request to meet specific service requirements.