The document outlines the repair cycle for a blow out preventer (BOP). The process involves receiving the BOP, dismantling and inspecting components, cleaning parts, making any necessary repairs or replacements, reassembling, testing, and delivering the repaired BOP. Key steps include dismantling while noting problem areas, cleaning via sandblasting, visually and dimensionally inspecting parts, replacing components that exceed limits, post-weld heat treatment of repaired parts, pressure and hydraulic testing the reassembled BOP, and delivering the repaired BOP according to specifications.

1. Repairing Blow Out Preventer
The Repair Cycle Overview

2. Flow Process
Receiving
Dismantle
Cleaning Inspection
Disposition
Repair
Part
Replace
ment
Final
Assembly
Testing Delivery

3. Receiving
 Receive BOP at Workshop
 Inspect for transit demage and take
receiving photographs
 Issue Work Orders

4. Dismantle
 Dismantling noting any problem areas
 Dismantle “dirty” inspection with the segregation
of any obvious scrap parts.
 Full documented and recorded in accordance with
Standard Operating Procedures.

5. Clean
 Cleaning and sandblasting prior
to carrying out a clean inspection

6. Inspection
 Visually and dimensionally inspect all parts to inspection
procedures
 Perform a non-destructive examination on critical area
 Perform non-destructive testing and evaluation of
components that are subject to normal wear and/or stress

7. Disposition
 Disposition includes
recomendation of which
parts can be reused,
reworked, repired or
replaced
 Issue a Pre-Inspection
Report at disassembly
with photographs of major
components

8. Repair
 Repair or replace all parts deemed
to exceed reusable limits
 May involve one of the following
processes :
1. Skim cut/Pre-Machining
2. Material rebuild includes
welding, chrome plating, metal
spray
3. Polish
4. PWHT (Post Weld Heat
Threatment)
5. Hardness Test

9. Part Replacement
 All Parts whether new or refurbished are subject to
ISO 9001:2015 and API Spec 16A based inspection
criteria

10. Final Assembly

11. Test
 All Repaired equipment are subject to ISO 9001:2015 and
API Spec 16A based test criteria
 The Pressure test for Shell, Assembly and hydraulic testy
and finalization with drift test.
 All test equipment are calibrated.

12. Despatch
 All Repaired equipment are delivered to the customers as
per API Spec 16A and standard Operating Procedures.