1.0 PURPOSE
2.0 SCOPE
3.0 APPLICABLE DOCUMENTS
4.0 RESPONSI Bl LITY
5.0 MANPOWER
6.0 TOOLS & EQUIPMENT
7.0 METHODS/PROCEDURES
8.0 QUALITY CONTROL
9.0 SAFETY PRECAUTION
10.0 ATTACHMENTS.
REMOVAL AND INSTALLATION OF NEW ANCHOR BOLT FOR PIPE RACK
1.0 PURPOSE
1.1 This method statement shall provide minimum guidelines to carry out the removal and installation of new anchor bolt for pipe rack for commercial buildings, plants and refinery to ensure that the work is carried out in accordance with Project Drawings and Project Specifications.
2.0 SCOPE
2.1 This method statement will cover the removal and installation of new anchor bolt for pipe rack for commercial buildings, plants and refinery.
3.0 APPLICABLE DOCUMENTS
3.1 ARAMCO Project Specification and Standards
3.1.1 SAEP-302 Instruction for Obtaining a Waiver of a Mandatory Saudi ARAMCO Engineering Requirements
3.1.2 SAES-M-001 Structural Design for Non-Building Structure
3.1.3 SAES-Q-010 Cement Based, Non-Shrink Grout for Structural & Equipment Grouting
3.1.4 12-SAMSS-007 Fabrication of Structural and Miscellaneous Steel
3.1.5 12-SAMSS-008 Erection of Structural and Miscellaneous Steel
3.1.6 SCHEDULE Q Saudi ARAMCO Project Quality Requirements
3.1. 7 Saudi ARAMCO Safety Requirement for Scaffolds
3.1.8 Saudi ARAMCO Construction Safety Manual
3.2 Industry Codes and Standards
3.2.1 AISC AISC Code of Standard Practice, Specification for Structural Joints Using ASTM A325 or A490 Bolts
3.2.2 PIP STS05130 Erection of Structural and Miscellaneous Steel Specification
3.3 Inspection and Test Plan/ Method Statement
3.3.1 SATIP-M-001-01 Structural Steel for Piperack, Steel Supports & Miscellaneous Steel Structures
3.3.2 SATIP-A-114-01 Earthwork – Site Preparation, Excavation and Backfill during Construction.
3.3.3 SATIP-Q-001-01 Ready Mix Concrete Batch Plants and 3rd Party Laboratory Management
3.3.4 SATIP-Q-010-01 Cement Based Non-Shrink Grouting.
3.3.5 SATIP-Q-001-02 Cast-In-Place Portland Cement Concrete.
3.3.6 SAIC-M-2006 Inspection of Support Foundation Prior to Structural or Equipment Installation.
3.3.7 SAIC-Q-1009 Cast-in-Place Ready Mix Concrete Receiving Inspection.
3.3.8 SAIC-Q-1011 Cast-In-Place Concrete Grade & Site Preparation.
3.3.9 SAIC-Q-1012 Cast-In-Place Concrete Formwork Inspection.
3.3.10 SAIC-Q-1015 Cast-In-Place Concrete Finishing and Curing Inspection.
3.3.11 SAICQ-1016 Cast-In-Place Concrete Formwork Stripping Inspection.
4.0 RESPONSIBILITY
4.1 Construction Manager is responsible for implementing HSE and shall study, analyze and schedule all construction activities with his department to include manpower and equipment line up as well as other possible resources required for the successful implementation of the construction work activities. Study all aspects of work procedure as per Saudi Aramco Standards.
4.2 Structural Supervisor shall study and review all necessary documents for the rectification works in his area. He shall monitor the availability of materials in accordance with the schedules and construction analysis. He shall be directly reporting to the Construction Manager. He shall coordinate with other discipline to visualize possible conflicts in the drawings as well as in the schedules to provide other options in preventing unnecessary delays obstructions.
4.3 Structural Foreman shall be responsible for the direct work supervision at site and ensure that the work is performed safely. He shall monitor the activity.
4.4 Surveyor shall study and analyze if the location where the structure should be installed satisfies the condition or restriction of erection works on site. He shall coordinate with other discipline to visualize possible conflicts in the drawings as well as in the schedules to provide other options in preventing unnecessary delays obstructions.
4.5 QC Inspector shall be responsible in monitoring and inspection of the work and ensure that the work is performed in accordance with Saudi Aramco Standards.
4.6 Safety Engineer/Supervisor shall be responsible in monitoring safety aspects and ensuring that the work is done in accordance with Safety Standard Procedure and Saudi Aramco Construction Safety Manual. He shall
5 . 0 M A N P O W E R
5.1 M a n p o w e r w i ll c o n s i s t o f t h e fo l l o w i n g , b u t n o t l i m i t e d t o a s l i s t e d t o a s b e l o w :
• S t r u c t u r a l S u p e rv i s o r
• S t r u c t u r a l F o r e m a n
• S t e e l w o r k e r s
• M a s o n ( b y o t h e r s )
• C a r p e n t e r ( b y o t h e r s )
• S c a ff o l d e r ( b y o t h e r s )
• H e l p e r
• B a c k h o e o p e r a t o r
• S u rv e y o r
• S a f e t y E n g i n e e r / S u p e rv i s o r
• Q C I n s p e c t o r
6 . 0 T O O L S A N D E Q U I P M E N T
6 . 1 T o o l s a n d e q u i p m e n t n e e d e d s h o u l d b e i n g o o d c o n d i t i o n a n d m u s t b e c h e c k e d
b y S t r u c t u r a l S u p e rv i s o r / S a f e t y O ff i c e r p r i o r t o u s e i n t h e g o o d c o n d i t i o n a r e a .
T h e s e i n c l u d e s b u t n o t l i m i t e d a s b e l o w :
• C h i p p i n g G u n
• C h i s e l a n d H a m m e r
• P u m p c r e t e ( b y o t h e r s )
• C o n c r e t e M i x e r ( b y o t h e r s )
• A u t o L e v e l
• T o t a l S t a t i o n
• B a c k h o e
7.0 METHODS / PROCEDURES
7 . 1 P r e p a r a t i o n W o r k s
7 . 1 . 1 S e c u r e w o r k p e r m i t fr o m J G C / D A E W O O c o n c e rn e d p e r s o n n e l p r i o r t o
s t a rt o f w o r k / a c t i v i t y .
7 . 1 . 2 P r e p a r e a ll m a t e r i a l s , t o o l s a n d e q u i p m e n t n e e d e d fo r t h e j o b .
7 . 1 . 3
I n s t a ll p h y s i c a l b a r r i c a d e a ro u n d t h e a r e a fo r a c t i v i t i e s . S a f e t y s i g n s a n d
b a r r i c a d e s a r e e r e c t e d t o k e e p u n a u t h o r i z e d p e r s o n n e l c l e a r o f a r e a s i n
w h i c h e r e c t i o n , c o n c r e t e p l a c i n g , o r fo r m w o r k s t r i p p i n g i s u n d e r w a y .
7.2 Removal and Installation Method
7.2.1 Before commencing work, checked and confirm the location. The location of activity should be at D25P11 Grid Line E4.
7.2.2 Excavate the area. From face of concrete column offset at least 1m wide from area of excavation and must have at least an slope of 45°. See attachment B for detail.
7.2.3 Install scaffold as required. (by others) 7.2.4 Chipped concrete column pedestal as illustrated in attachment B. Remove anchor bolts.
7.2.5 If required chipped portion is attained and anchor bolts are removed, clean the chipped column and remove laitance or damaged concrete with chipping gun or hammer.
7.2.6 After cleaning on chipped concrete on pedestal damaged coating on rebar will be repaired by approved coating procedure and inspected prior to commence further civil concrete work. (by others)
7.2.7 WTS/Handover to GLISAN for installation of required formworks. Forms shall be substantial and sufficiently tight to prevent leakage of mortar from the concrete. Studs, wales, or shores are properly spliced. Forms shall result in a final structure that conforms to shapes, lines, and dimensions of the members as required by the IFC drawings. Forms are properly braced or tied together to maintain position and shape and to prevent of movement of any part of the formwork system during concreting.
7.2.8 Formwork surfaces must be clean and no traceability of mortar, grout, and any foreign materials before concrete placement. Chamfer strips (minimum of 20mm) are placed
in corners of formwork to produce beveled edges on permanently exposed surfaces. Unless otherwise specified, reentrant corners or edges of formed joints of concrete are not beveled. (ACI 301-2010, Sec. 2.3.1.2)
7.2.9 WTS/Handover to ARCC for installation of anchor bolts as per IFC drawings. Check projection, location, orientation, verticality, elevation and condition. Installed anchor bolt should be secured enough not to move while on concreting stage.
7.2.10 WTS/Handover to GLISAN prior for concreting, inspection shall be done as per applicable SATIP and Saudi Aramco Standards.
7 . 2 . 1 1 C o n c r e t i n g s h a ll c o m m e n c e a ft e r a c c e p t a n c e o f cl i e n t s . P l a c e d c o n c r e t e s h a ll b e c o n s o l i d a t e d b y m e c h a n i c a l v i b r a t i o n e q u i p m e n t s u p p l e m e n t e d b y r o d d i n g o r t a m p i n g .
7 . 2 . 1 2 S l u m p a n d c y l i n d e r t e s t s a m p l e s s h a ll b e t a k e n fr o m t h e e n d o f t h e m i x e r truck chute .
7 . 2 . 1 3 A ft e r c o n c r e t i n g c h e c k b o l t o r i e n t a t i o n , v e rt i c a l i t y , e l e v a t i o n a n d
c o n d i t i o n . A n c h o r b o l t s h o u l d b e a s p e r r e q u i r e d o r a s p e r I F C d r a w i n g s .
7 . 2 . 1 4 1 2 h r s a ft e r c o n c r e t i n g , r e m o v a l o f fo r m w o r k s s h a ll c o m m e n c e . C u r i n g
s h a ll c o m m e n c e a ft e r r e m o v a l o f fo r m w o r k s . W a t e r c u r i n g s h a ll b e
c o n t i n u o u s u n t i l t h e c o m p r e s s i v e s t r e n g t h h a s r e a c h e d 7 0 % o f t h e
s p e c i fi e d s t r e n g t h , b u t n o t l e s s t h a n w h a t i s s p e c i fi e d i n T a bl e 1 o f S A E S
Q – 0 0 1 .
7.2.15 Concrete must be protected from damaging mechanical disturbances during the curing period. Finished surfaces are protected from damage by construction equipment, materials or any objects can damage the concrete .
7.2.16 After curing, back filling and compaction as per Saudi Aramco Standard shall commence. WTS/Handover to GLISAN.
7.2.17 Upon achieving required strength of concrete, installation of packer plate (padding works) by contractor shall commence, orientation and elevation shall be as per IFC drawings.
8 . 0 Q U A LI T Y C O N T R O L
8 . 1 Q C I n s p e c t o r w il l b e p r e s e n t a t s i t e d u r i n g t h e a c t i v i t y t o e n s u r e t h a t the activity will not generate stress on the structure.
8 . 2 Q C I n s p e c t o r w ill p ro d u c e a ll t h e d o c u m e n t s a tt e s t i n g t o t h e a c c e p t a b i l i t y o f t h e w o r k s a n d s u b m i t s t o J G C / D A E W O O .
8 . 3 Q C I n s p e c t o r h a s t o u t i l i z e t h e a p p l i c a b l e S A T I P ‘ s & S A I C ‘ s fo r e v e r y a c ti v i t y .
9.0 SAFETY PRECAUTION
9.1 Approved work permit should be obtained to concerned personnel prior to the start any activities.
- Work execution shall be carried out in accordance with this method of statement.
- The necessary manpower inclusive of supervisory staff, tools, equipment, materials, and other resources required must be made available and ready to use.
- During the activity, closely supervision shall be done by field supervisor.
- All workers shall wear as a minimum PPE required below .
- Safety Helmet
- Safety glasses
- Safety Shoes
- Gloves
- Sufficient lightings shall be provided if work is done at night time. Work at night shall be approved by client.
9 . 7 G o o d h o u s e k e e p i n g m u s t b e m a i n t a i n e d i n t h e d u r a t i o n o f w o r k s .
9 . 8 S a f e t y S u p e rv i s o r / E n g i n e e r s h a ll m o n i t o r c o m p l i a n c e o f e n t i r e w o r k i n g c r e w t o
s a f e t y p ro c e d u r e u n t il t h e w o r k i s f u ll y c o m p l e t e d .
9 . 9 A R C C s h a ll m a k e s u r e t h a t a ll s h a ll b e i n c i d e n t a n d i n j u ry fr e e .
9 . 1 0 T h e a r e a s h a ll b l o c k e d b y p h y s i c a l b a rr i c a d e o r w a rn i n g t a p e s d u r i n g a c t i v i t i e s i s t o b e d o n e t o e n s u r e s a f e t y .
10. ATTACHMENTS
Attachment A – Job Hazard and Risk Assessment (JHRA)
Attachment B – Illustration Detail
