2. After the proper approach has been decided upon, unscrew the affected piping (figure 1, item 3), fitting
(figure 1, item 4), or valve (figure 1, item 5) from any adjacent components. Set aside any adjacent compo-
nents for use during installation.
Wire brushing operations can produce flying debris, which can become lodged in
the skin or in the eyes. All personnel working in the area must wear protective
eyewear, gloves, and long sleeves when performing wire-brushing operations.
Failure to comply can result in serious injury to personnel.
Although anitseizing tape is necessary on the valve's connection pipe threads, none will
be allowed or necessary on the union threads. Leakage will result from applying
antiseizing tape to the union threads.
1. Use a wire brush to thoroughly clean the pipe threads on any components that will be reused. Take care to
remove all antiseizing tape from the threads.
2. Wrap all male pipe threads of all new components with antiseizing tape.
3. Thread the components back together, ensuring that all joints are securely tightened and that all components
are properly oriented.
4. If a piping section was removed, install the piping section. If the section was removed at a flanged or unioned
joint, follow the procedures contained in the paragraphs below.
5. Perform the Follow-On Service procedure at the end of this work package.
REPLACE VALVES AND PIPING, FLANGED
1. Remove the nuts (figure 2, item 1) and bolts (figure 2, item 2) that secure the flange (figure 2, item 3).
2. Remove the affected pipe section or component from the system. It may be necessary to disconnect mul-
tiple flanges to accomplish this.
3. Remove and discard the gaskets (figure 2, item 4).
4. Disassemble the piping section as necessary to isolate the affected part. It may be necessary to follow the
procedures contained in the paragraphs for threaded valves and piping of this work package.